SyncMOS Technologies International, Inc.
SM5964A
8-Bit Micro-controller
With 64KB ISP Flash & TWSI & PWM & 1KB RAM embedded
Addressing Mode
Notes on instruction set and address modes:
Rn
Register R7-R0 of the currently selected register bank.
direct
8-bits internal data location’s address. This could be internal DATA RAM location (0-127) or a SFR
[i.e., I/O port, control register, status register, etc. (128-255)]
@Ri
#data
8-bits RAM location addressed indirectly through register R1 or R0 of the actual register bank
8-bits constant included in the instruction
#data16
addr11
16-bits constant included in the instruction
11-bits destination address. Used by ACALL and AJMP. The branch can be anywhere within the same 2
K bytes page of program memory as the first byte of the following instruction.
Signed (2’s complement) 8-bits offset byte. Used by SJMP and all conditional jumps. Range is -128 to
+127 bytes relative to first byte of the following instruction.
rel
bit
Direct addressed bit in internal data RAM or SFR
Table 4: A Summary of the instruction set
Mnemonic
OPERATION
BYTE
CYCLE
Arithmetic Instructions
ADD
ADD
ADD
ADD
ADDC
ADDC
A,Rn
A = A + Rn
1
2
1
2
1
2
1
1
1
1
1
1
A,direct
A,@Ri
A,#data
A,Rn
A = A + direct
A = A + <@Ri>
A = A + #data
A = A + Rn + C
A = A + direct + C
A,direct
ADDC
ADDC
SUBB
A,@Ri
A,#data
A,Rn
A = A + @Ri + C
A = A + #data + C
A = A － Rn － C
1
2
1
1
1
1
SUBB
SUBB
SUBB
A,direct
A,@Ri
A,#data
2
1
2
1
1
1
A = A － direct － C
A = A － <@Ri> － C
A = A－#data － C
A = A + 1
Rn = Rn + 1
direct = direct + 1
<@Ri> = <@Ri> + 1
A = A － 1
INC
INC
INC
INC
DEC
A
Rn
direct
@Ri
A
1
1
2
1
1
1
1
1
1
1
DEC
DEC
DEC
INC
Rn
1
2
1
1
1
1
1
1
1
2
4
4
Rn = Rn － 1
direct
@Ri
DPTR
AB
direct = direct － 1
<@Ri> = <@Ri> － 1
DPTR = DPTR － 1
B:A = A × B
MUL
DIV
AB
A = INT (A/B)
B = MOD (A/B)
DA
A
Decimal adjust ACC
1
1
Logical Instructions
A,Rn
ANL
ANL
ANL
ANL
ANL
ANL
ORL
ORL
ORL
ORL
ORL
ORL
XRL
XRL
XRL
XRL
XRL
XRL
CLR
A .AND. Rn
1
2
1
2
2
3
1
2
1
2
2
3
1
2
1
2
2
3
1
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
1
A,direct
A,@Ri
A,#data
direct,A
direct,#data
A,Rn
A,direct
A,@Ri
A,#data
direct,A
direct,#data
A,Rn
A,direct
A,@Ri
A,#data
direct,A
direct,#data
A
A .AND. direct
A .AND. <@Ri>
A .AND. #data
direct .AND. A
direct .AND. #data
A .OR. Rn
A .OR. direct
A .OR. <@Ri>
A .OR. #data
direct .OR. A
direct .OR. #data
A .XOR. Rn
A .XOR. direct
A .XOR. <@Ri>
A .XOR. #data
direct .XOR. A
direct .XOR. #data
A = 0
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.3 SM5964A 10/2006
17
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
