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D17133CS Datasheet(PDF) 255 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) 255 Page - NEC

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CHAPTER 18
INSTRUCTION SET
240
(2)
BR @AR
Branch to the address specified by address register
<1> OP code
00111
000
0100
0000
<2> Function
PC
← AR
Branches to the program address, specified by address register AR.
<3> Example 1
Sets 003FH in address register AR (AR0-AR3) and jumps to address 003FH by using the BR @AR instruction:
MOV
AR3,
#00H
; AR3
← 00H
MOV
AR2,
#00H
; AR2
← 00H
MOV
AR1,
#03H
; AR1
← 03H
MOV
AR0,
#0FH
; AR0
← 0FH
BR
@AR
; Jumps to address 003FH
Example 2
Changes the branch destination according to the data memory address 0.10H contents, as follows:
0.10H contents
Branch destination label
00H
→
AAA
01H
→
BBB
02H
→
CCC
03H
→
DDD
04H
→
EEE
05H
→
FFF
06H
→
GGG
07H
→
HHH
08H-0FH
→
ZZZ
; *
; ** Jump table
Address
; *
0010H
BR
AAA
0011H
BR
BBB
0012H
BR
CCC



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