hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 221

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Increment address
Figure 6.11 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
Disable WDT
SWE bit ← 1
Enable WDT
SWE bit ← 0
ESU bit ← 1
ESU bit ← 0
Wait 100 µs
Wait 100 µs
Wait 10 ms
Erase start
Wait 10 µs
Wait 10 µs
EV bit ← 1
Wait 20 µs
EV bit ← 0
Wait 1 µs
E bit ← 1
E bit ← 0
Wait 2 µs
Wait 4 µs
Set EBR
n ← 1
Yes
Yes
Yes
No
Rev. 6.00 Aug 04, 2006 page 185 of 680
SWE bit ← 0
Erase failure
Wait 100 µs
EV bit ← 0
Wait 4µs
n ≤100 ?
No
Yes
n ← n + 1
REJ09B0145-0600
Section 6 ROM