HD6433682 ETC, HD6433682 Datasheet - Page 131

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

Note: *The RTS instruction must not be used during a period between dummy writing of H'FF to a verify address and verify data reading.
Increment address
Figure 7.4 Erase/Erase-Verify Flowchart
No
No
Set block start address as verify address
H'FF dummy write to verify address
All erase block erased ?
Last address of block ?
Verify data + all 1s ?
Read verify data
End of erasing
ESU bit
Disable WDT
SWE bit
SWE bit
Enable WDT
ESU bit
Wait 100 s
Wait 100 s
Erase start
EV bit
EV bit
Wait 10 s
Wait 10 s
Wait 20 s
Set EBR1
Wait 1 s
Wait 2 s
Wait 4 s
E bit
E bit
n
10 s
Yes
Yes
1
1
0
1
0
10
Yes
Yes
1
1
0
No
*
Rev.3.00, 05/03, page 101 of 472
SWE bit
Erase failure
Wait 100 s
EV bit
Wait 4 s
n 100 ?
No
0
0
Yes
n
n + 1