COPCH823CJ Datasheet, PDF (23/32 Pages) National Semiconductor (TI) – 8-bit Microcontroller with with Multi-Input Wake Up and Brown Detecter

Instruction Execution Time
Bytes and Cycles per
Most instructions are single byte (with immediate address-
ing mode instruction taking two bytes)
Most single 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
Instruction
The following table shows the number of bytes and cycles
for each instruction in the format of byte cycle
See the BYTES and CYCLES per INSTRUCTION table for
details
Arithmetic Instructions (Bytes Cycles)
B
Direct
Immed
ADD
11
34
22
ADC
11
34
22
SUBC
11
34
22
AND
11
34
22
OR
11
34
22
XOR
11
34
22
IFEQ
11
34
22
IFGT
11
34
22
IFBNE
11
DRSZ
13
SBIT
11
34
RBIT
11
34
IFBIT
11
34
Memory Transfer Instructions (Bytes Cycles)
Register
Register Indirect
Indirect Direct Immed Auto Incr Decr
BX
Ba Bb Xa Xb
XA
11 13 23
12
LD A
11 13 23 22
12
LD B Imm
11
LD B Imm
23
LD Mem Imm
33
22
LD Reg Imm
23
13
13
(If B ^k 16)
(If B ^l 15)
el Memory location addressed by B or X or directly
Instructions Using A C
Instructions
CLRA
INCA
DECA
LAID
DCORA
RRCA
SWAPA
SC
RC
IFC
IFNC
Bytes Cycles
11
11
11
13
11
11
11
11
11
11
11
Transfer of Control Instructions
Instructions
JMPL
JMP
JP
JSRL
JSR
JID
RET
RETSK
RETI
INTR
NOP
Bytes Cycles
34
23
13
35
25
13
15
15
15
17
11
23
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