W741C260 Datasheet, PDF (86/92 Pages) Winbond – 4-BIT MICROCONTROLLER

W741C260
Instruction Set Table 2, continued
SKB3 R
If bit 3 of R is equal to 1 then skip
Machine Code:
Machine Cycle:
Operation:
Description:
STOP
Machine Code:
Machine Cycle:
Operation:
Description:
SUB R, ACC
10001010
1 R6 R5 R4 R3 R2 R1 R0
1
PC ← (PC) + 2; if R.3 = "1"
If bit 3 of R is equal to 1, the program counter is incremented by 2 and a
skip is produced. If bit 3 of R is not equal to 1, the program counter (PC) is
incremented.
Enter the STOP mode
00000000
11000000
1
STOP oscillator
Device enters STOP mode. When the falling edge signal of RC port is
accepted, the µC will wake up and execute the next instruction.
Subtract ACC from R
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
0 0011010
0 R6 R5 R4 R3 R2 R1 R0
1
ACC ← (R) - (ACC)
The contents of the ACC are binary subtracted from the contents of the
data memory location addressed by R6 to R0 and the result is loaded into
the ACC.
CF & ZF
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