W921E840A Datasheet, PDF (50/58 Pages) Winbond – 4-BIT MICROCONTROLLER

W921E840A/W921C840
10. INSTRUCTION CODE MAP
b9 = 0
b8 = 0
0 ^LSB
MSB
1
2
3
4
5
67
8
9
ABC
DE
F
0
NOP
MOV A, B MOV A, Mx MOV A, @M MOV A, W MOV A, V MOV A, U
SRL A
INC B
ADD A, Mx ADD A, @M
CLRB Mx, bit
1
MOV B, A
MOV B, Mx MOV B, @M
2
MOV Mx, A MOV Mx, B
SRH A
INC DP
ADC A, Mx ADC A, @M
SLL A
DEC B
SUB A, Mx SUB A, @M
CLRB @M, bit
SETB Mx, bit
3
MOV @M, A MOV @M, B
SLH A
DEC DP
SBC A, Mx SBC A, @M
SETB @M, bit
4
MOV W, A
5
MOV V, A
RRC A
ANL A, Mx ANL A, @M CLR EVF XCH A, B MOV DP, #I
SOP
ORL A, Mx ORL A, @M
SIP
6
MOV U, A
RLC A
XRL A, B XRL A, Mx XRL A, @M SET CF
XCH V, CV
HOLD
RTN
7
CMP A, B CMP A, MX CMP A, @M CLR CF
XCH U, CU
STOP
RTNI
8
ADD A, #I
9
ADC A, #I
A
SUB A, #I
B
SBC A, #I
C
ANL A, #I
D
ORL A, #I
E
XRL A, #I
F
CMP A, #I
1W/1C
1W/2C
1W/3C
2W/2C
2W/3C
3W/3C
Undecided
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