UPD789014 Datasheet, PDF (47/123 Pages) NEC – 8-Bit Single-Chip Microcontroller Instructions

CHAPTER 4 INSTRUCTION SET
Mnemonic
Operand
Byte Clock
Operation
Flag
Z AC CY
RET
1
6 PCH ← (SP + 1), PCL ← (SP), SP ← SP + 2
RETI
1
8 PCH ← (SP + 1), PCL ← (SP),
PSW ← (SP + 2), SP ← SP + 3, NMIS ← 0
RRR
PUSH
PSW
1
2 (SP – 1) ← PSW, SP ← SP – 1
rp
1
4 (SP – 1) ← rpH, (SP – 2) ← rpL, SP ← SP – 2
POP
PSW
1
4 PSW ← (SP), SP ← SP + 1
RRR
rp
1
6 rpH ← (SP + 1), rpL ← (SP), SP ← SP + 2
MOVW
SP,AX
2
8 SP ← AX
AX,SP
2
6 AX ← SP
BR
!addr16
3
6 PC ← addr16
$addr16
2
6 PC ← PC + 2 + jdisp8
AX
1
6 PCH ← A, PCL ← X
BC
$addr16
2
6 PC ← PC + 2 + jdisp8 if CY = 1
BNC
$addr16
2
6 PC ← PC + 2 + jdisp8 if CY = 0
BZ
$addr16
2
6 PC ← PC + 2 + jdisp8 if Z = 1
BNZ
$addr16
2
6 PC ← PC + 2 + jdisp8 if Z = 0
BT
saddr.bit, $addr16
4
10 PC ← PC + 4 + jdisp8 if (saddr.bit) = 1
sfr.bit, $addr16
4
10 PC ← PC + 4 + jdisp8 if sfr.bit = 1
A.bit, $addr16
3
8 PC ← PC + 3 + jdisp8 if A.bit = 1
PSW.bit, $addr16
4
10 PC ← PC + 4 + jdisp8 if PSW.bit = 1
BF
saddr.bit, $addr16
4
10 PC ← PC + 4 + jdisp8 if (saddr.bit) = 0
sfr.bit, $addr16
4
10 PC ← PC + 4 + jdisp8 if sfr.bit = 0
A.bit, $addr16
3
8 PC ← PC + 3 + jdisp8 if A.bit = 0
PSW.bit, $addr16
4
10 PC ← PC + 4 + jdisp8 if PSW.bit = 0
DBNZ
B, $addr16
2
6 B ← B – 1, then PC ← PC + 2 + jdisp8 if B ≠ 0
C, $addr16
2
6 C ← C – 1, then PC ← PC + 2 + jdisp8 if C ≠ 0
saddr, $addr16
3
8 (saddr) ← (saddr) – 1, then
PC ← PC + 3 + jdisp8 if (saddr) ≠ 0
NOP
1
2 No Operation
EI
3
6 IE ← 1 (Enable Interrupt)
DI
3
6 IE ← 0 (Disable Interrupt)
HALT
1
2 Set HALT Mode
STOP
1
2 Set STOP Mode
Remark One instruction clock cycle is equal to one CPU clock (fCPU) cycle selected by the processor clock control
register (PCC).
User’s Manual U11047EJ3V0UM00
47