Hitachi H8/3692 ユーザーズマニュアル

Rev. 1.0, 07/01, page 94 of 372

Erase start

Set EBR1

Enable WDT

Wait 1 

µ

s

Wait 100 

µ

s

Set SWE bit in FLMCR1 to 1

n = 1

Set ESU bit in FLMCR1 to 1

Set E bit to 1

Wait 10 

µ

s

Clear E bit to 0

Wait 10 

µ

s

Clear ESU bit in FLMCR1 to 0

10 

µ

s

Disable WDT

Read verify data

Increment address

Verify data = all 1s ?

Last address of block ?

All erase blocks erased ?

Set block start address as verify address

H'FF dummy write to verify address

Wait 20 

µ

s

Wait 2 

µ

s

Set EV bit to 1

Wait 100 

µ

s

End of erasing

Clear SWE bit to 0

Wait 4 

µ

s

Clear EV bit to 0

n 

≤

100 ?

Wait 100 

µ

s

Erasing failure

Clear SWE bit to 0

Wait 4

µ

s

Clear EV bit to 0

n 

← 

n + 1

Yes

No

Yes

Yes

Yes

Yes

No

No

No