參數(shù)資料
型號(hào): COPCSH984XXX/WM
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁(yè)數(shù): 41/60頁(yè)
文件大?。?/td> 693K
代理商: COPCSH984XXX/WM
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.
Skipped instructions require x number of cycles to be
skipped, where x equals the number of bytes in the skipped
instruction opcode.
Bytes and Cycles per Instruction
The following table shows the number of bytes and cycles for
each instruction in the format of byte/cycle.
Arithmetic and Logic Instructions
[B]
Direct
Immed.
ADD
1/1
3/4
2/2
ADC
1/1
3/4
2/2
SUBC
1/1
3/4
2/2
AND
1/1
3/4
2/2
OR
1/1
3/4
2/2
XOR
1/1
3/4
2/2
IFEQ
1/1
3/4
2/2
IFNE
1/1
3/4
2/2
IFGT
1/1
3/4
2/2
IFBNE
1/1
DRSZ
1/3
SBIT
1/1
3/4
RBIT
1/1
3/4
IFBIT
1/1
3/4
RPND
1/1
Instructions Using A & C
CLRA
1/1
INCA
1/1
DECA
1/1
LAID
1/3
DCOR
1/1
RRCA
1/1
RLCA
1/1
SWAPA
1/1
SC
1/1
RC
1/1
IFC
1/1
IFNC
1/1
PUSHA
1/3
POPA
1/3
ANDSZ
2/2
Transfer of Control Instructions
JMPL
3/4
JMP
2/3
JP
1/3
JSRL
3/5
JSR
2/5
JID
1/3
VIS
1/5
RET
1/5
RETSK
1/5
RETI
1/5
INTR
1/7
NOP
1/1
Memory Transfer Instructions
Register
Direct
Immed.
Register Indirect
Indirect
Auto Incr. & Decr.
[B]
[X]
[B+, B]
[X+, X]
X A, (Note 14)
1/1
1/3
2/3
1/2
1/3
LD A, (Note 14)
1/1
1/3
2/3
2/2
1/2
1/3
LD B, Imm
1/1
(IF B < 16)
LD B, Imm
2/2
(IF B > 15)
LD Mem, Imm
2/2
3/3
2/2
LD Reg, Imm
2/3
IFEQ MD, Imm
3/3
Note 14:
= > Memory location addressed by B or X or directly.
COP888xG/CS
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