ACKNOWLEDGMENTS
Thanks to Bill McKinnon for his contributions to the AS8XCXXX
cross assembler.
Bill McKinnon
w_mckinnon@conknet.com
This assembler was derived from the AS8051 cross assembler
contributed by John Hartman.
John L. Hartman
jhartman@compuserve.com
DS8XCXXX ASSEMBLER DIRECTIVES
The AS8XCXXX assembler contains directives to specify the
processor core SFR (Special Function Registers) and enable the
SFR Bit Register values during the assembly process. The fol-
lowing directives are supported:
.DS8XCXXX ;80C32 core
.DS80C310 ;Dallas Semiconductor
.DS80C320 ;Microprocessors
.DS80C323
.DS80C390
.DS83C520
.DS83C530
.DS83C550
.DS87C520
.DS87C530
.DS87C550
The invocation of one of the processor directives creates a pro-
cessor specific symbol and an SFR-Bits symbol. For example the
directive
.DS80C390
creates the global symbols '__DS80C390' and '__SFR_BITS' each
with a value of 1. If the microprocessor core selection direc-
tive is followed by an optional argument then the symbol
'__SFR_BITS' is given the value of the argument. The file
DS8XCXXX.SFR contains the SFR and SFR register bit values for
all the microprocessor selector directives. This file may be
modified to create a new SFR for other microprocessor types.
If a microprocessor selection directive is not specified then
no processor symbols will be defined. This mode allows the SFR
and SFR register bit values to be defined by the assembly source
file.
.cpu Directive
The .cpu directive is similar to the processor selection
directives. This directive defines a new processor type and
creates a user defined symbol:
.cpu "CP84C331" 2
creates the symbol '__CP84C331' with a value of 1 and the
symbol '__SFR_BITS' with a value of 2. These values can be used
to select the processor SFR and SFR register bits from an in-
clude file. If the optional final argument, 2, is omitted then
the value of the symbol '__SFR_BITS' is 1.
Processor Addressing Range Directives
If one of the .DS8... microprocessor selection directives is
not specified then the following address range assembler direc-
tives are accepted:
.16bit ;16-Bit Addressing
.24bit ;24-Bit Addressing
.32bit ;32-Bit Addressing
These directives specify the assembler addressing space and ef-
fect the output format for the .lst, .sym, and .rel files.
The default addressing space for defined microprocessors is
16-Bit except for the DS80C390 microprocessor which is 24-Bit.
The .cpu directive defaults to the 16-Bit addressing range
but this can be changed using these directives.
The .__.CPU. Variable
The value of the pre-defined symbol '.__.CPU.' corresponds to
the selected processor type. The default value is 0 which cor-
responds to the default processor type. The following table
lists the processor types and associated values for the AS8XCXXX
assembler:
Processor Type .__.CPU. Value
-------------- --------------
.cpu 0
.DS8XCXXX 1
.DS80C310 2
.DS80C320 3
.DS80C323 4
.DS80C390 5
.DS83C520 6
.DS83C530 7
.DS83C550 8
.DS87C520 9
.DS87C530 10
.DS87C550 11
The variable '.__.CPU.' is by default defined as local and
will not be output to the created .rel file. The assembler com-
mand line options -g or -a will not cause the local symbol to be
output to the created .rel file.
The assembler .globl directive may be used to change the
variable type to global causing its definition to be output to
the .rel file. The inclusion of the definition of the variable
'.__.CPU.' might be a useful means of validating that separately
assembled files have been compiled for the same processor type.
The linker will report an error for variables with multiple non
equal definitions.
AS8XCXXX ASSEMBLER DIRECTIVES
The DS80C390 microprocessor supports 16-Bit and 24-Bit ad-
dressing modes. The .amode assembler directive provides a
method to select the addressing mode used by the ajmp, acall,
ljmp, and lcall instructions. These four instructions support
16 and 24 bit addressing modes selected by bits AM0 and AM1 in
the ACON register. The assembler is 'informed' about the ad-
dressing mode selected by using the .amode directive:
.amode 2 ;mode 2 is 24-bit addressing
If a second argument is specified and its value is non-zero,
then a three instruction sequence is inserted at the .amode lo-
cation loading the mode bits into the ACON register:
.amode 2,1 ;mode 2 is 24-bit addressing, load ACON
;mov ta,#0xAA
;mov ta,#0x55
;mov acon,#amode
The .msb Directive
The .msb directive is available in the AS8XCXXX assembler.
The assembler operator '>' selects the upper byte (MSB) when
included in an assembler instruction. The default assembler
mode is to select bits <15:8> as the MSB. The .msb directive
allows the programmer to specify a particular byte as the 'MSB'
when the address space is larger than 16-bits.
The assembler directive .msb n configures the assembler to
select a particular byte as MSB. Given a 24-bit address of Nmn
(N(2) is <23:16>, m(1) is <15:8>, and n(0) is <7:0>) the follow-
ing examples show how to select a particular address byte:
.msb 1 ;select byte 1 of address
;<M(3):N(2):m(1):n(0)>
LD A,>MNmn ;byte m <15:8> ==>> A
...
.msb 2 ;select byte 2 of address
;<M(3):N(2):m(1):n(0)>
LD A,>MNmn ;byte N <23:16> ==>> A
...
DS8XCXXX REGISTER SET
The AS8XCXXX cross assembler supports the Dallas Semiconductor
DS8XCXXX series of 8051-compatible devices. These microproces-
sors retain instruction set and object code compatability with
the 8051 microprocessor. The DS8XCXXX family is updated with
several new peripherals while providing all the standard
features of the 80C32 microprocessor.
The following is a list of the registers used by AS8XCXXX:
a,b - 8-bit accumulators
r0,r1,r2,r3 - 8-bit registers
r4,r5,r6,r7
dptr - data pointer
sp - stack pointer
pc - program counter
psw - status word
c - carry (bit in status word)
DS8XCXXX INSTRUCTION SET
The following tables list all DS8XCXXX mnemonics recognized
by the AS8XCXXX assembler. The following list specifies the
format for each addressing mode supported by AS8XCXXX:
#data immediate data
byte or word data
r,r1,r2 register r0,r1,r2,r3,r4,r5,r6, or r7
@r indirect on register r0 or r1
@dptr indirect on data pointer
@a+dptr indirect on accumulator
plus data pointer
@a+pc indirect on accumulator
plus program counter
addr direct memory address
bitaddr bit address
label call or jump label
The terms data, addr, bitaddr, and label may all be expressions.
Note that not all addressing modes are valid with every in-
struction. Refer to the DS8XCXXX technical data for valid
modes.
Inherent Instructions
nop
Move Instructions
mov a,#data mov a,addr
mov a,r mov a,@r
mov r,#data mov r,addr
mov r,a
mov addr,a mov addr,#data
mov addr,r mov addr,@r
mov addr1,addr2 mov bitaddr,c
mov @r,#data mov @r,addr
mov @r,a
mov c,bitaddr
mov dptr,#data
movc a,@a+dptr movc a,@a+pc
movx a,@dptr movx a,@r
movx @dptr,a movx @r,a
Single Operand Instructions
clr a clr c
clr bitaddr
cpl a cpl c
cpl bitaddr
setb c setb bitaddr
da a
rr a rrc a
rl a rlc a
swap a
dec a dec r
dec @r
inc a inc r
inc dptr inc @r
div ab mul ab
pop addr push addr
Two Operand Instructions
add a,#data add a,addr
add a,r add a,@r
addc a,#data addc a,addr
addc a,r addc a,@r
subb a,#data subb a,addr
subb a,r subb a,@r
orl a,#data orl a,addr
orl a,r orl a,@r
orl addr,a orl addr,#data
orl c,bitaddr orl c,/bitaddr
anl a,#data anl a,addr
anl a,r anl a,@r
anl addr,a anl addr,#data
anl c,bitaddr anl c,/bitaddr
xrl a,#data xrl a,addr
xrl a,r xrl a,@r
xrl addr,a xrl addr,#data
xrl c,bitaddr xrl c,/bitaddr
xch a,addr xch a,r
xch a,@r xchd a,@r
Call and Return Instructions
acall label lcall label
ret reti
in data
out data
rst data
M.4.6 Jump Instructions
ajmp label
cjne a,#data,label cjne a,addr,label
cjne r,#data,label cjne @r,#data,label
djnz r,label djnz addr,label
jbc bitadr,label
jb bitadr,label jnb bitadr,label
jc label jnc label
jz label jnz label
jmp @a+dptr
ljmp label sjmp label
DS8XCXXX SPECIAL FUNCTION REGISTERS
The 80C32 core Special Function Registers are selected using
the .DS8xCxxx assembler directive.
DS8XCXXX SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 SP DPL DPH 83
84 PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 8F
90 P1 93
94 97
98 SCON SBUF 9B
9C 9F
A0 P2 A3
A4 A7
A8 IE SADDR0 AB
AC AF
B0 P3 B3
B4 B7
B8 IP SADEN0 BB
BC BF
C0 C3
C4 STATUS C7
C8 T2CON T2MOD RCAP2L RCAP2H CB
CC TL2 TH2 CF
D0 PSW D3
D4 D7
D8 DB
DC DF
E0 ACC E3
E4 E7
E8 EB
EC EF
F0 B F3
F4 F7
F8 FB
FC FF
DS8XCXXX SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
P1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
P2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
P3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
C0 C3
C4 C7
T2CON C8 T2CON.0 T2CON.1 T2CON.2 T2CON.3 CB
CC T2CON.4 T2CON.5 T2CON.6 T2CON.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
D8 DB
DC DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
E8 EB
EC EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
F8 FB
FC FF
DS8XCXXX SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
90 93
94 97
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 EA AF
B0 B3
B4 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PT2 BF
C0 C3
C4 C7
T2CON C8 CPRL2 CT2 TR2 EXEN2 CB
CC TCLK RCLK EXF2 TF2 CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
D8 DB
DC DF
E0 E3
E4 E7
E8 EB
EC EF
F0 F3
F4 F7
F8 FB
FC FF
Alternates:
SCON 98 9B
9C FE 9F
T2CON C8 CP_RL2 C_T2 CB
CC CF
DS8XCXXX SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
PCON 0x80 SMOD SMOD0 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
STATUS 0x80 HIP LIP 0x10
0x08 0x01
T2MOD 0x80 0x10
0x08 T2OE DCEN 0x01
DS80C310 SPECIAL FUNCTION REGISTERS
The DS80C310 Special Function Registers are selected using
the .DS80C310 assembler directive.
DS80C310 SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 SP DPL DPH 83
84 DPL1 DPH1 DPS PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 CKCON 8F
90 P1 EXIF 93
94 97
98 SCON SBUF 9B
9C 9F
A0 P2 A3
A4 A7
A8 IE SADDR0 AB
AC AF
B0 P3 B3
B4 B7
B8 IP SADEN0 BB
BC BF
C0 C3
C4 STATUS C7
C8 T2CON T2MOD RCAP2L RCAP2H CB
CC TL2 TH2 CF
D0 PSW D3
D4 D7
D8 WDCON DB
DC DF
E0 ACC E3
E4 E7
E8 EIE EB
EC EF
F0 B F3
F4 F7
F8 EIP FB
FC FF
DS80C310 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
P1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
P2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
P3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
C0 C3
C4 C7
T2CON C8 T2CON.0 T2CON.1 T2CON.2 T2CON.3 CB
CC T2CON.4 T2CON.5 T2CON.6 T2CON.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
WDCON D8 WDCON.0 WDCON.1 WDCON.2 WDCON.3 DB
DC WDCON.4 WDCON.5 WDCON.6 WDCON.7 DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
EIE E8 EIE.0 EIE.1 EIE.2 EIE.3 EB
EC EIE.4 EIE.5 EIE.6 EIE.7 EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
EIP F8 EIP.0 EIP.1 EIP.2 EIP.3 FB
FC EIP.4 EIP.5 EIP.6 EIP.7 FF
DS80C310 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
90 93
94 97
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 EA AF
B0 B3
B4 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PT2 BF
C0 C3
C4 C7
T2CON C8 CPRL2 CT2 TR2 EXEN2 CB
CC TCLK RCLK EXF2 TF2 CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
WDCON D8 DB
DC POR DF
E0 E3
E4 E7
EIE E8 EX2 EX3 EX4 EX5 EB
EC EF
F0 F3
F4 F7
EIP F8 PX2 PX3 PX4 PX5 FB
FC FF
Alternates:
SCON 98 9B
9C FE 9F
T2CON C8 CP_RL2 C_T2 CB
CC CF
DS80C310 SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
DPS 0x80 0x10
0x08 SEL 0x01
PCON 0x80 SMOD SMOD0 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
CKCON 0x80 T2M T1M 0x10
0x08 T0M MD2 MD1 MD0 0x01
EXIF 0x80 IE5 IE4 IE3 IE2 0x10
0x08 0x01
STATUS 0x80 HIP LIP 0x10
0x08 0x01
T2MOD 0x80 0x10
0x08 T2OE DCEN 0x01
Alternates:
PCON 0x80 SMOD_0 0x10
0x08 0x01
DS80C320/DS80C323 SPECIAL FUNCTION REGISTERS
The DS80C320/DS80C323 Special Function Registers are selected
using the .DS80C320 or DS80C323 assembler directives.
DS80C320/DS80C323 SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 SP DPL DPH 83
84 DPL1 DPH1 DPS PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 CKCON 8F
90 P1 EXIF 93
94 97
98 SCON0 SBUF0 9B
9C 9F
A0 P2 A3
A4 A7
A8 IE SADDR0 AB
AC AF
B0 P3 B3
B4 B7
B8 IP SADEN0 BB
BC BF
C0 SCON1 SBUF1 C3
C4 STATUS TA C7
C8 T2CON T2MOD RCAP2L RCAP2H CB
CC TL2 TH2 CF
D0 PSW D3
D4 D7
D8 WDCON DB
DC DF
E0 ACC E3
E4 E7
E8 EIE EB
EC EF
F0 B F3
F4 F7
F8 EIP FB
FC FF
Alternates:
98 SCON SBUF 9B
DS80C320/DS80C323 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
P1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON0 98 SCON0.0 SCON0.1 SCON0.2 SCON0.3 9B
9C SCON0.4 SCON0.5 SCON0.6 SCON0.7 9F
P2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
P3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
SCON1 C0 SCON1.0 SCON1.1 SCON1.2 SCON1.3 C3
C4 SCON1.4 SCON1.5 SCON1.6 SCON1.7 C7
T2CON C8 T2CON.0 T2CON.1 T2CON.2 T2CON.3 CB
CC T2CON.4 T2CON.5 T2CON.6 T2CON.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
WDCON D8 WDCON.0 WDCON.1 WDCON.2 WDCON.3 DB
DC WDCON.4 WDCON.5 WDCON.6 WDCON.7 DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
EIE E8 EIE.0 EIE.1 EIE.2 EIE.3 EB
EC EIE.4 EIE.5 EIE.6 EIE.7 EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
EIP F8 EIP.0 EIP.1 EIP.2 EIP.3 FB
FC EIP.4 EIP.5 EIP.6 EIP.7 FF
Alternates:
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
DS80C320/DS80C323 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
90 93
94 97
SCON0 98 RI_0 TI_0 RB8_0 TB8_0 9B
9C REN_0 SM2_0 SM1_0 SMO_0 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 EA AF
B0 B3
B4 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PT2 BF
SCON1 C0 RI_1 TI_1 RB8_1 TB8_1 C3
C4 REN_1 SM2_1 SM1_1 SMO_1 C7
T2CON C8 CPRL2 CT2 TR2 EXEN2 CB
CC TCLK RCLK EXF2 TF2 CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
WDCON D8 RWT EWT WTRF WDIF DB
DC PFI EPFI POR SMOD_1 DF
E0 E3
E4 E7
EIE E8 EX2 EX3 EX4 EX5 EB
EC EWDI EF
F0 F3
F4 F7
EIP F8 PX2 PX3 PX4 PX5 FB
FC PWDI FF
Alternates:
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
SCON 98 9B
9C FE 9F
SCON0 98 9B
9C FE_0 9F
SCON1 C0 C3
C4 FE_1 C7
T2CON C8 CP_RL2 C_T2 CB
CC CF
DS80C320/DS80C323 SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
DPS 0x80 0x10
0x08 SEL 0x01
PCON 0x80 SMOD_0 SMOD0 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
CKCON 0x80 WD1 WD0 T2M T1M 0x10
0x08 T0M MD2 MD1 MD0 0x01
EXIF 0x80 IE5 IE4 IE3 IE2 0x10
0x08 RGMD RGSL BGS 0x01
STATUS 0x80 PIP HIP LIP 0x10
0x08 0x01
T2MOD 0x80 0x10
0x08 T2OE DCEN 0x01
Alternates:
PCON 0x80 SMOD 0x10
0x08 0x01
DS80C390 SPECIAL FUNCTION REGISTERS
The DS80C390 Special Function Registers are selected using
the .DS80C390 assembler directive.
DS80C390 SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 P4 SP DPL DPH 83
84 DPL1 DPH1 DPS PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 CKCON 8F
90 P1 EXIF P4CNT DPX 93
94 DPX1 C0RMS0 C0RMS1 97
98 SCON0 SBUF0 ESP 9B
9C AP ACON C0TMA0 C0TMA1 9F
A0 P2 P5 P5CNT C0C A3
A4 C0S C0IR C0TE C0RE A7
A8 IE SADDR0 SADDR1 C0M1C AB
AC C0M2C C0M3C C0M4C C0M5C AF
B0 P3 C0M6C B3
B4 C0M7C C0M8C C0M9C C0M10C B7
B8 IP SADEN0 SADEN1 C0M11C BB
BC C0M12C C0M13C C0M14C C0M15C BF
C0 SCON1 SBUF1 C3
C4 PMR STATUS MCON TA C7
C8 T2CON T2MOD RCAP2L RCAP2H CB
CC TL2 TH2 COR CF
D0 PSW MCNT0 MCNT1 MA D3
D4 MB MC C1RMS0 C1RMS1 D7
D8 WDCON DB
DC C1TMA0 C1TMA1 DF
E0 ACC C1C E3
E4 C1S C1IR C1TE C1RE E7
E8 EIE MXAX C1M1C EB
EC C1M2C C1M3C C1M4C C1M5C EF
F0 B C1M6C F3
F4 C1M7C C1M8C C1M9C C1M10C F7
F8 EIP C1M11C FB
FC C1M12C C1M13C C1M14C C1M15C FF
Alternates:
98 SCON SBUF 9B
DS80C390 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
P4 80 P4.0 P4.1 P4.2 P4.3 83
84 P4.4 P4.5 P4.6 P4.7 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
P1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON0 98 SCON0.0 SCON0.1 SCON0.2 SCON0.3 9B
9C SCON0.4 SCON0.5 SCON0.6 SCON0.7 9F
P2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
P3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
SCON1 C0 SCON1.0 SCON1.1 SCON1.2 SCON1.3 C3
C4 SCON1.4 SCON1.5 SCON1.6 SCON1.7 C7
T2CON C8 T2CON.0 T2CON.1 T2CON.2 T2CON.3 CB
CC T2CON.4 T2CON.5 T2CON.6 T2CON.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
WDCON D8 WDCON.0 WDCON.1 WDCON.2 WDCON.3 DB
DC WDCON.4 WDCON.5 WDCON.6 WDCON.7 DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
EIE E8 EIE.0 EIE.1 EIE.2 EIE.3 EB
EC EIE.4 EIE.5 EIE.6 EIE.7 EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
EIP F8 EIP.0 EIP.1 EIP.2 EIP.3 FB
FC EIP.4 EIP.5 EIP.6 EIP.7 FF
Alternates:
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
DS80C390 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
P1 90 T2 T2EX RXD1 TXD1 93
94 INT2 INT3 INT4 INT5 97
SCON0 98 RI_0 TI_0 RB8_0 TB8_0 9B
9C REN_0 SM2_0 SM1_0 SMO_0 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 ES1 EA AF
P3 B0 RXD0 TXD0 INT0 INT1 B3
B4 T0 T1 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PT2 PS1 BF
SCON1 C0 RI_1 TI_1 RB8_1 TB8_1 C3
C4 REN_1 SM2_1 SM1_1 SMO_1 C7
T2CON C8 CPRL2 CT2 TR2 EXEN2 CB
CC TCLK RCLK EXF2 TF2 CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
WDCON D8 RWT EWT WTRF WDIF DB
DC PFI EPFI POR SMOD_1 DF
E0 E3
E4 E7
EIE E8 EX2 EX3 EX4 EX5 EB
EC EWDI C1IE C0IE CANBIE EF
F0 F3
F4 F7
EIP F8 PX2 PX3 PX4 PX5 FB
FC PWDI C1IP C0IP CANBIP FF
Alternates:
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
SCON 98 9B
9C FE 9F
SCON0 98 9B
9C FE_0 9F
SCON1 C0 C3
C4 FE_1 C7
T2CON C8 CP_RL2 C_T2 CB
CC CF
DS80C390 SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
DPS 0x80 ID1 ID0 TSL 0x10
0x08 SEL 0x01
PCON 0x80 SMOD_0 SMOD0 OFDF OFDE 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
CKCON 0x80 WD1 WD0 T2M T1M 0x10
0x08 T0M MD2 MD1 MD0 0x01
EXIF 0x80 IE5 IE4 IE3 IE2 0x10
0x08 CKRY RGMD RGSL BGS 0x01
P4CNT 0x80 SBCAN 0x10
0x08 0x01
ESP 0x80 0x10
0x08 ESP.1 ESP.0 0x01
ACON 0x80 0x10
0x08 SA AM1 AM0 0x01
P5 0x80 P5.7 P5.6 P5.5 P5.4 0x10
0x08 P5.3 P5.2 P5.1 P5.0 0x01
P5CNT 0x80 CAN1BA CAN0BA SP1EC C1_IO 0x10
0x08 C0_IO P5CNT.2 P5CNT.1 P5CNT.0 0x01
CxC 0x80 ERIE STIE PDE SIESTA 0x10
0x08 CRST AUTOB ERCS SWINT 0x01
CxS 0x80 BSS EC96_128 WKS RXS 0x10
0x08 TXS ER2 ER1 ER0 0x01
CxIR 0x80 INTIN7 INTIN6 INTIN5 INTIN4 0x10
0x08 INTIN3 INTIN2 INTIN1 INTIN0 0x01
CxCxxC 0x80 MSRDY ET1 ER1 INTRQ 0x10
0x08 EXTRQ MTRQ ROW_TIH DTUP 0x01
PMR 0x80 CD1 CD0 SWB CTM 0x10
0x08 4X_2X ALEOFF 0x01
STATUS 0x80 PIP HIP LIP 0x10
0x08 SPTA1 SPRA1 SPTA0 SPRA0 0x01
MCON 0x80 IDM1 IDM0 CMA 0x10
0x08 PDCE3 PDCE2 PDCE1 PDCE0 0x01
T2MOD 0x80 D13T1 0x10
0x08 D13T2 T2OE DCEN 0x01
COR 0x80 IRDACK C1BPR7 C1BPR6 C0BPR7 0x10
0x08 C0BPR6 COD1 COD0 CLKOE 0x01
MCNT0 0x80 _LSHIFT CSE SCB MAS4 0x10
0x08 MAS3 MAS2 MAS1 MAS0 0x01
MCNT1 0x80 MST MOF CLM 0x10
0x08 0x01
Alternates:
PCON 0x80 SMOD 0x10
0x08 0x01
DS83C520/DS87C520 SPECIAL FUNCTION REGISTERS
The DS83C520/DS87C520 Special Function Registers are selected
using the .DS83C520 or DS87C520 assembler directives.
DS83C520/DS87C520 SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 P0 SP DPL DPH 83
84 DPL1 DPH1 DPS PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 CKCON 8F
90 PORT1 EXIF 93
94 97
98 SCON0 SBUF0 9B
9C 9F
A0 P2 A3
A4 A7
A8 IE SADDR0 SADDR1 AB
AC AF
B0 P3 B3
B4 B7
B8 IP SADEN0 SADEN1 BB
BC BF
C0 SCON1 SBUF1 ROMSIZE C3
C4 PMR STATUS TA C7
C8 T2CON T2MOD RCAP2L RCAP2H CB
CC TL2 TH2 CF
D0 PSW D3
D4 D7
D8 WDCON DB
DC DF
E0 ACC E3
E4 E7
E8 EIE EB
EC EF
F0 B F3
F4 F7
F8 EIP FB
FC FF
Alternates:
98 SCON SBUF 9B
DS83C520/DS87C520 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
P0 80 P0.7 P0.6 P0.5 P0.4 83
84 P0.3 P0.2 P0.1 P0.0 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
PORT1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON0 98 SCON0.0 SCON0.1 SCON0.2 SCON0.3 9B
9C SCON0.4 SCON0.5 SCON0.6 SCON0.7 9F
P2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
P3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
SCON1 C0 SCON1.0 SCON1.1 SCON1.2 SCON1.3 C3
C4 SCON1.4 SCON1.5 SCON1.6 SCON1.7 C7
T2CON C8 T2CON.0 T2CON.1 T2CON.2 T2CON.3 CB
CC T2CON.4 T2CON.5 T2CON.6 T2CON.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
WDCON D8 WDCON.0 WDCON.1 WDCON.2 WDCON.3 DB
DC WDCON.4 WDCON.5 WDCON.6 WDCON.7 DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
EIE E8 EIE.0 EIE.1 EIE.2 EIE.3 EB
EC EIE.4 EIE.5 EIE.6 EIE.7 EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
EIP F8 EIP.0 EIP.1 EIP.2 EIP.3 FB
FC EIP.4 EIP.5 EIP.6 EIP.7 FF
Alternates:
PORT1 90 PORT1.0 PORT1.1 PORT1.2 PORT1.3 93
94 PORT1.4 PORT1.5 PORT1.6 PORT1.7 97
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
DS83C520/DS87C520 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
90 93
94 97
SCON0 98 RI_0 TI_0 RB8_0 TB8_0 9B
9C REN_0 SM2_0 SM1_0 SMO_0 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 ES1 EA AF
B0 B3
B4 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PT2 PS1 BF
SCON1 C0 RI_1 TI_1 RB8_1 TB8_1 C3
C4 REN_1 SM2_1 SM1_1 SMO_1 C7
T2CON C8 CPRL2 CT2 TR2 EXEN2 CB
CC TCLK RCLK EXF2 TF2 CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
WDCON D8 RWT EWT WTRF WDIF DB
DC PFI EPFI POR SMOD_1 DF
E0 E3
E4 E7
EIE E8 EX2 EX3 EX4 EX5 EB
EC EWDI EF
F0 F3
F4 F7
EIP F8 PX2 PX3 PX4 PX5 FB
FC PWDI FF
Alternates:
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
SCON 98 9B
9C FE 9F
SCON0 98 9B
9C FE_0 9F
SCON1 C0 C3
C4 FE_1 C7
T2CON C8 CP_RL2 C_T2 CB
CC CF
DS83C520/DS87C520 SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
DPS 0x80 0x10
0x08 SEL 0x01
PCON 0x80 SMOD_0 SMOD0 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
CKCON 0x80 WD1 WD0 T2M T1M 0x10
0x08 T0M MD2 MD1 MD0 0x01
EXIF 0x80 IE5 IE4 IE3 IE 0x10
0x08 XT_RG RGMD RGSL BGS 0x01
SBUF1 0x80 SB7 SB6 SB5 SB4 0x10
0x08 SB3 SB2 SB1 SB0 0x01
ROMSIZE 0x80 0x10
0x08 RMS2 RMS1 RMS0 0x01
PMR 0x80 CD1 CD0 SWB 0x10
0x08 XTOFF ALEOFF DME1 DME0 0x01
STATUS 0x80 PIP HIP LIP XTUP 0x10
0x08 SPTA1 SPRA1 SPTA0 SPRA0 0x01
T2MOD 0x80 0x10
0x08 T2OE DCEN 0x01
Alternates:
PCON 0x80 SMOD 0x10
0x08 0x01
DS83C530/DS87C530 SPECIAL FUNCTION REGISTERS
The DS83C530/DS87C530 Special Function Registers are selected
using the .DS83C530 or DS87C530 assembler directives.
DS83C530/DS87C530 SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 P0 SP DPL DPH 83
84 DPL1 DPH1 DPS PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 CKCON 8F
90 P1 EXIF 93
94 TRIM 97
98 SCON0 SBUF0 9B
9C 9F
A0 P2 A3
A4 A7
A8 IE SADDR0 SADDR1 AB
AC AF
B0 P3 B3
B4 B7
B8 IP SADEN0 SADEN1 BB
BC BF
C0 SCON1 SBUF1 ROMSIZE C3
C4 PMR STATUS TA C7
C8 T2CON T2MOD RCAP2L RCAP2H CB
CC TL2 TH2 CF
D0 PSW D3
D4 D7
D8 WDCON DB
DC DF
E0 ACC E3
E4 E7
E8 EIE EB
EC EF
F0 B RTASS RTAS F3
F4 RTAM RTAH F7
F8 EIP RTCC RTCSS RTCS FB
FC RTCM RTCH RTCD0 RTCD1 FF
Alternates:
98 SCON SBUF 9B
DS83C530/DS87C530 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
P0 80 P0.7 P0.6 P0.5 P0.4 83
84 P0.3 P0.2 P0.1 P0.0 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
P1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON0 98 SCON0.0 SCON0.1 SCON0.2 SCON0.3 9B
9C SCON0.4 SCON0.5 SCON0.6 SCON0.7 9F
P2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
P3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
SCON1 C0 SCON1.0 SCON1.1 SCON1.2 SCON1.3 C3
C4 SCON1.4 SCON1.5 SCON1.6 SCON1.7 C7
T2CON C8 T2CON.0 T2CON.1 T2CON.2 T2CON.3 CB
CC T2CON.4 T2CON.5 T2CON.6 T2CON.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
WDCON D8 WDCON.0 WDCON.1 WDCON.2 WDCON.3 DB
DC WDCON.4 WDCON.5 WDCON.6 WDCON.7 DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
EIE E8 EIE.0 EIE.1 EIE.2 EIE.3 EB
EC EIE.4 EIE.5 EIE.6 EIE.7 EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
EIP F8 EIP.0 EIP.1 EIP.2 EIP.3 FB
FC EIP.4 EIP.5 EIP.6 EIP.7 FF
Alternates:
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
DS83C530/DS87C530 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
90 93
94 97
SCON0 98 RI_0 TI_0 RB8_0 TB8_0 9B
9C REN_0 SM2_0 SM1_0 SMO_0 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 ES1 EA AF
B0 B3
B4 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PT2 PS1 BF
SCON1 C0 RI_1 TI_1 RB8_1 TB8_1 C3
C4 REN_1 SM2_1 SM1_1 SMO_1 C7
T2CON C8 CPRL2 CT2 TR2 EXEN2 CB
CC TCLK RCLK EXF2 TF2 CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
WDCON D8 RWT EWT WTRF WDIF DB
DC PFI EPFI POR SMOD_1 DF
E0 E3
E4 E7
EIE E8 EX2 EX3 EX4 EX5 EB
EC EWDI ERTCI EF
F0 F3
F4 F7
EIP F8 PX2 PX3 PX4 PX5 FB
FC PWDI PRTCI FF
Alternates:
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
SCON 98 9B
9C FE 9F
SCON0 98 9B
9C FE_0 9F
SCON1 C0 C3
C4 FE_1 C7
T2CON C8 CP_RL2 C_T2 CB
CC CF
DS83C530/DS87C530 SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
DPS 0x80 0x10
0x08 SEL 0x01
PCON 0x80 SMOD_0 SMOD0 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
CKCON 0x80 WD1 WD0 T2M T1M 0x10
0x08 T0M MD2 MD1 MD0 0x01
EXIF 0x80 IE5 IE4 IE3 IE 0x10
0x08 XT_RG RGMD RGSL BGS 0x01
TRIM 0x80 E4K X12_6 TRM2 _TRM2 0x10
0x08 TRM1 _TRM1 TRM0 _TRM0 0x01
SBUF1 0x80 SB7 SB6 SB5 SB4 0x10
0x08 SB3 SB2 SB1 SB0 0x01
ROMSIZE 0x80 0x10
0x08 RMS2 RMS1 RMS0 0x01
PMR 0x80 CD1 CD0 SWB 0x10
0x08 XTOFF ALEOFF DME1 DME0 0x01
STATUS 0x80 PIP HIP LIP XTUP 0x10
0x08 SPTA1 SPRA1 SPTA0 SPRA0 0x01
T2MOD 0x80 0x10
0x08 T2OE DCEN 0x01
RTCC 0x80 SSCE SCE MCE HCE 0x10
0x08 RTCRE RTCWE RTCIF RTCE 0x01
Alternates:
PCON 0x80 SMOD 0x10
0x08 0x01
DS83C550/DS87C550 SPECIAL FUNCTION REGISTERS
The DS83C550/DS87C550 Special Function Registers are selected
using the .DS83C550 or DS87C550 assembler directives.
DS83C550/DS87C550 SPECIAL FUNCTION REGISTERS
SFR Map
--------- 4 Bytes ----------
---- ---- ---- ----
80 PORT0 SP DPL DPH 83
84 DPL1 DPH1 DPS PCON 87
88 TCON TMOD TL0 TL1 8B
8C TH0 TH1 CKCON 8F
90 PORT1 RCON 93
94 97
98 SCON0 SBUF0 9B
9C PMR 9F
A0 PORT2 SADDR0 SADDR1 A3
A4 A7
A8 IE CMPL0 CMPL1 CMPL2 AB
AC CPTL0 CPTL1 CPTL2 CPTL3 AF
B0 PORT3 ADCON1 ADCON2 B3
B4 ADMSB ADLSD WINHI WINLO B7
B8 IP SADEN0 SADEN1 BB
BC T2CON T2MOD BF
C0 PORT4 ROMSIZE C3
C4 PORT5 STATUS TA C7
C8 T2IR CMPH0 CMPH1 CMPH2 CB
CC CPTH0 CPTH1 CPTH2 CPTH3 CF
D0 PSW PW0FG PW1FG D3
D4 PW2FG PW3FG PWMADR D7
D8 SCON1 SBUF1 DB
DC PWM0 PWM1 PWM2 PWM3 DF
E0 ACC PW01CS PW23CS PW01CON E3
E4 PW23CON RLOADL RLOADH E7
E8 EIE T2SEL CTCON EB
EC TL2 TH2 SETR RSTR EF
F0 B PORT6 F3
F4 F7
F8 EIP FB
FC WDCON FF
Alternates:
80 P0 83
90 P1 93
98 SCON SBUF 9B
A0 P2 A3
B0 P3 B3
C0 P4 C3
C4 P5 C7
F0 PORT6 F3
DS83C550/DS87C550 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Generic
---------- 4 BITS ----------
---- ---- ---- ----
PORT0 80 P0.7 P0.6 P0.5 P0.4 83
84 P0.3 P0.2 P0.1 P0.0 87
TCON 88 TCON.0 TCON.1 TCON.2 TCON.3 8B
8C TCON.4 TCON.5 TCON.6 TCON.7 8F
PORT1 90 P1.0 P1.1 P1.2 P1.3 93
94 P1.4 P1.5 P1.6 P1.7 97
SCON0 98 SCON0.0 SCON0.1 SCON0.2 SCON0.3 9B
9C SCON0.4 SCON0.5 SCON0.6 SCON0.7 9F
PORT2 A0 P2.0 P2.1 P2.2 P2.3 A3
A4 P2.4 P2.5 P2.6 P2.7 A7
IE A8 IE.0 IE.1 IE.2 IE.3 AB
AC IE.4 IE.5 EI.6 IE.7 AF
PORT3 B0 P3.0 P3.1 P3.2 P3.3 B3
B4 P3.4 P3.5 P3.6 P3.7 B7
IP B8 IP.0 IP.1 IP.2 IP.3 BB
BC IP.4 IP.5 IP.6 IP.7 BF
PORT4 C0 P4.0 P4.1 P4.2 P4.3 C3
C4 P4.4 P4.5 P4.6 P4.7 C7
T2IR C8 T2IR.0 T2IR.1 T2IR.2 T2IR.3 CB
CC T2IR.4 T2IR.5 T2IR.6 T2IR.7 CF
PSW D0 PSW.0 PSW.1 PSW.2 PSW.3 D3
D4 PSW.4 PSW.5 PSW.6 PSW.7 D7
SCON1 D8 SCON1.0 SCON1.1 SCON1.2 SCON1.3 DB
DC SCON1.4 SCON1.5 SCON1.6 SCON1.7 DF
ACC E0 ACC.0 ACC.1 ACC.2 ACC.3 E3
E4 ACC.4 ACC.5 ACC.6 ACC.7 E7
EIE E8 EIE.0 EIE.1 EIE.2 EIE.3 EB
EC EIE.4 EIE.5 EIE.6 EIE.7 EF
B F0 B.0 B.1 B.2 B.3 F3
F4 B.4 B.5 B.6 B.7 F7
EIP F8 EIP.0 EIP.1 EIP.2 EIP.3 FB
FC EIP.4 EIP.5 EIP.6 EIP.7 FF
Alternates:
PORT0 80 PORT0.7 PORT0.6 PORT0.5 PORT0.4 83
84 PORT0.3 PORT0.2 PORT0.1 PORT0.0 87
PORT1 90 PORT1.0 PORT1.1 PORT1.2 PORT1.3 93
94 PORT1.4 PORT1.5 PORT1.6 PORT1.7 97
SCON 98 SCON.0 SCON.1 SCON.2 SCON.3 9B
9C SCON.4 SCON.5 SCON.6 SCON.7 9F
PORT2 A0 PORT2.0 PORT2.1 PORT2.2 PORT2.3 A3
A4 PORT2.4 PORT2.5 PORT2.6 PORT2.7 A7
PORT3 B0 PORT3.0 PORT3.1 PORT3.2 PORT3.3 B3
B4 PORT3.4 PORT3.5 PORT3.6 PORT3.7 B7
PORT4 C0 PORT4.0 PORT4.1 PORT4.2 PORT4.3 C3
C4 PORT4.4 PORT4.5 PORT4.6 PORT4.7 C7
DS83C550/DS87C550 SPECIAL FUNCTION REGISTERS
Bit Addressable Registers: Specific
---------- 4 BITS ----------
---- ---- ---- ----
80 83
84 87
TCON 88 IT0 IE0 IT1 IE1 8B
8C TR0 TF0 TR1 TF1 8F
90 93
94 97
SCON0 98 RI_0 TI_0 RB8_0 TB8_0 9B
9C REN_0 SM2_0 SM1_0 SMO_0 9F
A0 A3
A4 A7
IE A8 EX0 ET0 EX1 ET1 AB
AC ES0 ET2 ES1 EA AF
B0 B3
B4 B7
IP B8 PX0 PT0 PX1 PT1 BB
BC PS0 PS1 PAD BF
PORT4 C0 CMSR0 CMSR1 CMSR2 CMSR3 C3
C4 CMSR4 CMSR5 CMT0 CMT1 C7
T2IR C8 CF0 CF1 CF2 CF3 CB
CC CM0F CM1F CM2F CF
PSW D0 P FL OV RS0 D3
D4 RS1 F0 AC CY D7
SCON1 D8 RI_1 TI_1 RB8_1 TB8_1 DB
DC REN_1 SM2_1 SM1_1 SMO_1 DF
E0 E3
E4 E7
EIE E8 EX2 EX3 EX4 EX5 EB
EC ECM0 ECM1 ECM2 ET2 EF
F0 F3
F4 F7
EIP F8 PX2 PX3 PX4 PX5 FB
FC PCM0 PCM1 PCM2 PT2 FF
Alternates:
SCON 98 RI TI RB8 TB8 9B
9C REN SM2 SM1 SMO 9F
SCON 98 9B
9C FE 9F
SCON0 98 9B
9C FE_0 9F
T2IR C8 IE2 IE3 IE4 IE5 CB
CC CF
SCON1 D8 DB
DC FE_1 DF
EIE E8 EC0 EC1 EC2 EC3 EB
EC EF
EIP F8 PC0 PC1 PC2 PC3 FB
FC FF
DS83C550/DS87C550 SPECIAL FUNCTION REGISTERS
Optional Symbols: Control Bits
---------- 4 BITS ----------
---- ---- ---- ----
0x80 0x40 0x20 0x10
0x08 0x04 0x02 0x10
---- ---- ---- ----
DPS 0x80 ID1 ID0 TSL 0x10
0x08 SEL 0x01
PCON 0x80 SMOD_0 SMOD0 0x10
0x08 GF1 GF0 STOP IDLE 0x01
TMOD 0x80 T1GATE T1C_T T1M1 T1M0 0x10
0x08 T0GATE T0C_T T0M1 T0M0 0x01
CKCON 0x80 WD1 WD0 T2M T1M 0x10
0x08 T0M MD2 MD1 MD0 0x01
RCON 0x80 0x10
0x08 CKRDY RGMD RGSL BGS 0x01
PMR 0x80 CD1 CD0 SWB CTM 0x10
0x08 4X_2X ALEOFF DEM1 DEM0 0x01
ADCON1 0x80 STRT_BSY EOC CONT_SS ADEX 0x10
0x08 WCQ WCM ADON WCIO 0x01
ADCON2 0x80 OUTCF MUX2 MUX1 MUX0 0x10
0x08 APS3 APS2 APS1 APS0 0x01
T2CON 0x80 TF2 EXF2 RCLK TCLK 0x10
0x08 EXEN2 TR2 CT2 CPRL2 0x01
T2MOD 0x80 0x10
0x08 T2OE DCEN 0x01
PORT5 0x80 ADC7 ADC6 ADC5 ADC4 0x10
0x08 ADC3 ADC2 ADC1 ADC0 0x01
ROMSIZE 0x80 0x10
0x08 RMS2 RMS1 RMS0 0x01
STATUS 0x80 PIP HIP LIP XTUP 0x10
0x08 SPTA1 SPRA1 SPTA0 SPRA0 0x01
PWMADR 0x80 ADRS 0x10
0x08 PWE1 PWE0 0x01
PW01CS 0x80 PW0S2 PW0S1 PW0S0 PW0EN 0x10
0x08 PW1S2 PW1S1 PW1S0 PW1EN 0x01
PW23CS 0x80 PW2S2 PW2S1 PW2S0 PW2EN 0x10
0x08 PW3S2 PW3S1 PW3S0 PW3EN 0x01
PW01CON 0x80 PW0F PW0DC PW0OE PW0T_C 0x10
0x08 PW1F PW1DC PW1OE PW1T_C 0x01
PW23CON 0x80 PW2F PW2DC PW2OE PW2T_C 0x10
0x08 PW3F PW3DC PW3OE PW3T_C 0x01
T2SEL 0x80 TF2S TF2BS TF2B 0x10
0x08 T2P1 T2P0 0x01
CTCON 0x80 _CT3 CT3 _CT2 CT2 0x10
0x08 _CT1 CT1 _CT0 CT0 0x01
SETR 0x80 TGFF1 TGFF0 CMS5 CMS4 0x10
0x08 CMS3 CMS2 CMS1 CMS0 0x01
RSTR 0x80 CMTE1 CMTE0 CMR5 CMR4 0x10
0x08 CMR3 CMR2 CMR1 CMR0 0x01
PORT6 0x80 STADC PWMC1 PWMC0 0x10
0x08 PWMO3 PWMO2 PWMO1 PWMO0 0x01
WDCON 0x80 SMOD_1 POR EPF1 PF1 0x10
0x08 WDIF WTRF EWT RWT 0x01
Alternates:
PCON 0x80 SMOD 0x10
0x08 0x01
T2CON 0x80 0x10
0x08 C_T2 _RL2 0x01
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