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Section 6 ROM
Rev. 6.00 Sep 12, 2006 page 143 of 526
REJ09B0326-0600
MOV.W
#H'e5A,
R4
;
MOV.B
R4L,
@TCSRW:8
;
MOV.B
R4H,
@TCW:8
;
MOV.B
#H'36,
R4L
;
MOV.B
R4L,
@TCSRW:8
;
Start watchdog timer
MOV.W
R5,
R4
;
Set erase loop counter
BSET
#1,
@FLMCR:8
;
Set E bit
LOOPE: NOP
NOP
NOP
NOP
SUBS
#1,
R4
;
MOV.W
R4,
R4
;
BNE
LOOPE
;
Wait loop
BCLR
#1,
@FLMCR:8
;
Clear E bit
MOV.B
#H'50,
R4L
;
MOV.B
R4L,
@TCSRW:8
;
Stop watchdog timer
;
Execute erase-verify
EVR: MOV.W
#RAMSTR,
R2
;
Transfer destination start address (RAM)
MOV.W
#ERVADR,
R3
;
ADD.W
R3,
R2
;
# #ERVADR
→
R2
MOV.W
#START,
R3
;
SUB.W
R3,
R2
;
Address of data area used in RAM
MOV.B
#H'00,
R1L
;
Used to test bit R1L in R0
MOV.B
#H'b,
R4H
;
Set erase-verify loop counter
BSET
#3,
@FLMCR:8
;
Set EV bit
LOOPEV: DEC
R4H
;
BNE
LOOPEV
;
Wait loop
EBRTST: CMP.B #H'0C,
R1L
;
R1L = H'0C?
BEQ
HANTEI
;
If finished checking all R0 bits, branch to HANTEI
CMP.B
#H'08,
R1L
;
BMI
EBR2EV
;
If R1L
≥
8, EBR1 test; if R1L < 8, EBR2 test
MOV.B
R1L,
R1H
;
SUBX
#H'08,
R1H
;
R1L – 8
→
R1H
BTST
R1H,
R0H
;
Test bit R1H in EBR1 (R0H)
BNE
ERSEVF
;
If bit R1H in EBR1 (R0H) is 1, branch to ERSEVF
BRA
ADD01
;
If bit R1H in EBR1 (R0H) is 0, branch to ADD01
EBR2EV: BTST
R1L,
R0L
;
Test bit R1L in EBR2 (R0L)
BNE
ERSEVF
;
If bit R1L in EBR2 (R0L) is 1, branch to ERSEVF
ADD01: INC
R1L
;
R1L + 1
→
R1L
MOV.W
@R2+,
R3
;
Dummy-increment R2
BRA
EBRTST
;
ERASE1: BRA
ERASE
;
Branch to ERASE via ERASE1
ERSEVF: MOV.W @R2+,
R3
;
Start address of block to be erase-verified
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...