cop87l88gw National Semiconductor Corporation, cop87l88gw Datasheet - Page 37

• Manufacturer Part Number: cop87l88gw
• Description: One-time Programmable Otp Microcontroller
• Manufacturer: National Semiconductor Corporation

Instruction Execution Time
Most instructions are single byte (with immediate addressing mode instructions taking two bytes)
Most single byte instructions take one cycle time to execute
See the BYTES and CYCLES per INSTRUCTION table for details
Bytes and Cycles per InstructIon
Note
Arithmetic and Logic Instructions
ADD
ADC
SUBC
AND
OR
XOR
IFEQ
IFGT
IFBNE
DRSZ
SBIT
RBIT
lFBIT
RPND
X A
LD A
LD B Imm
LD B Imm
LD Mem Imm
LD Reg Imm
IFEQ MD Imm
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l
Memory location addressed by B or X or directly
The following table shows the number of bytes and cycles for each instruction in the format of byte cycle
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
B
Direct
3 4
3 4
3 4
3 4
3 4
3 4
3 4
3 4
1 3
3 4
3 4
3 4
1 1
1 1
2 2
B
Register
Indirect
Immed
2 2
2 2
2 2
2 2
2 2
2 2
2 2
2 2
1 3
1 3
X
Direct
Memory Transfer Instructions
2 3
2 3
3 3
2 3
3 3
Instructions Using A
CLRA
INCA
DECA
LAID
DCORA
RRCA
RLCA
SWAPA
SC
RC
IFC
IFNC
PUSHA
POPA
ANDSZ
Immed
37
2 2
1 1
2 2
1 1
1 1
1 1
1 3
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 3
1 3
2 2
C
B
a
1 2
1 2
2 2
Auto Incr and Decr
Register Indirect
B
b
Transfer of Control Instructions
JMPL
JMP
JP
JSRL
JSR
JID
VIS
RET
RETSK
RETI
INTR
NOP
X
a
1 3
1 3
X
b
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(IF B
(IF B
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3 4
2 3
1 3
3 5
2 5
1 3
1 5
1 5
1 5
1 5
1 7
1 1
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