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D17133CS Datasheet(PDF) 233 Page - NEC

Part # D17133CS
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  289 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

D17133CS Datasheet(HTML) 233 Page - NEC

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CHAPTER 18
INSTRUCTION SET
218
Example 2
Skips the next instruction, if both bits 3 and 0 in address 29H are 0.
SKF
29H, #1001B
b3
b2
b1
b0
Skip condition
29H
0
××
0
× : don't care
Example 3
The results of executing the following two instructions are the same:
SKF
34H, #1111B
SKE
34H, #00H
18.5.5 Comparison Instructions
(1)
SKE m, #n4
Skip if data memory equal to immediate data
<1> OP code
10
87
43
0
01001
mR
mC
n4
<2> Function
(m) –n4, skip if zero
Skip the next one instruction, if the data memory contents are equal to the immediate data value (Executes
as NOP instruction).
<3> Example
To transfer 0FH to address 24H, if the address 24H contents are 0; if not, jumps to OPE1:
MEM024
MEM
0.24H
SKE
MEM024, #00H
BR
OPE1
MOV
MEM024, #0FH
OPE1
:



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