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HD6433644R Datasheet(PDF) 158 Page - Renesas Technology Corp

Part # HD6433644R
Description  8-Bit Single-Chip Microcomputer
PDF  549 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6433644R Datasheet(HTML) 158 Page - Renesas Technology Corp

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Section 6 ROM
Rev. 6.00 Sep 12, 2006 page 138 of 526
REJ09B0326-0600
CMP.W
R2,
R3
;
Last address in block?
BNE
EVR2
;
BRA
OKEND
;
RERASE:
BCLR
#3,
@FLMCR:8
;
Clear EV bit
SUBS
#1,
R3
;
Erase-verify address – 1
→ R3
MOV.W
#H'0004, R4
;
CMP.W
R4,
R6
;
Erase-verify fail count = 4?
BPL
BRER
;
If R6 ≥ 4. branch to BRER (branch until R6 = 4 – 602)
ADD.W
R5,
R5
;
If R6 < 4, double erase time (executed only for R6 = 1, 2, 3)
BRER:
MOV.W
#H'025A, R4
;
CMP.W
R4,
R6
;
Erase-verify executed 602 times?
BNE
ERASE
;
If erase-verify not executed 602 times, erase again
BRA
ABEND2
;
If erase-verify executed 602 times, branch to ABEND2
OKEND:
BCLR
#3,
@FLMCR:8
;
Clear EV bit
MOV.B
#H'00,
R6L
;
MOV.B
R6L,
@EBR*:8
;
Clear EBR*
One block erased
ABEND2:
Erase error



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