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COP688CL Datasheet(PDF) 30 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # COP688CL
Description  General Description
PDF  40 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

COP688CL Datasheet(HTML) 30 Page - National Semiconductor (TI)

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Instruction Execution Time
Most instructions are single byte (with immediate address-
ing 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
See the BYTES and CYCLES per INSTRUCTION table for
details
Bytes and Cycles per Instruction
The following table shows the number of bytes and cycles
for each instruction in the format of bytecycle
Arithmetic and Logic Instructions
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
IFNE
11
34
22
IFGT
11
34
22
IFBNE
11
DRSZ
13
SBIT
11
34
RBIT
11
34
IFBIT
11
34
RPND
11
Instructions UsingAC
CLRA
11
INCA
11
DECA
11
LAID
13
DCOR
11
RRCA
11
RLCA
11
SWAPA
11
SC
11
RC
11
IFC
11
IFNC
11
PUSHA
13
POPA
13
ANDSZ
22
Transfer of Control
Instructions
JMPL
34
JMP
23
JP
13
JSRL
35
JSR
25
JID
13
VIS
15
RET
15
RETSK
15
RETI
15
INTR
17
NOP
11
Memory Transfer Instructions
Register
Direct
Immed
Register Indirect
Indirect
Auto Incr
Decr
B
X
Ba Bb
Xa Xb
XA
11
13
23
12
13
LD A
11
13
23
22
12
13
LD B Imm
11
(IF B k 16)
LD B Imm
22
(IF B l 15)
LD Mem Imm
22
33
22
LD Reg Imm
23
IFEQ MD Imm
33
e l
Memory location addressed by B or X or directly
http
www nationalcom
30



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