h8s-2110b Renesas Electronics Corporation., h8s-2110b Datasheet - Page 466
h8s-2110b
Manufacturer Part Number
h8s-2110b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2110B.pdf
(559 pages)
- Current page: 466 of 559
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Section 17 ROM
Rev. 2.00 Mar 21, 2006 page 428 of 518
REJ09B0299-0200
Notes: 1. Prewriting (writing 0 to all data in erased block) is not necessary.
2. The values of x, y, z, , ,
3. Verify data is read in 16-bit (word) units.
4. Set only a single bit in EBR1 and EBR2. Do not set more than one bit.
5. Erasing is performed in block units. To erase multiple blocks, each block must be erased in turn.
Increment
address
Figure 17.10 Erase/Erase-Verify Flowchart
NG
NG
H'FF dummy write to verify address
, , , and N are shown in section 21.1.4, Flash Memory Characteristics.
Clear ESU bit in FLMCR2
Clear SWE bit in FLMCR1
Set SWE bit in FLMCR1
*
All erase blocks erased?
Set ESU bit in FLMCR2
Set block start address
Clear EV bit in FLMCR1
Clear E bit in FLMCR1
Set EV bit in FLMCR1
5
Set EBR1 and EBR2
Set E bit in FLMCR1
as verify address
Read verify data
End of erasing
Disable WDT
Enable WDT
Last address
Wait ( z ) ms
Wait ( ) s
Wait ( x ) s
Wait ( y ) s
Wait ( ) s
Wait ( ) s
Wait ( ) s
Wait ( ) s
Verify data
Wait ( ) s
= all "1"?
of block?
START
n = 1
OK
OK
OK
*
1
NG
*
2
Start of erasing
End of erasing
*
*
*
*
*
*
*
*
*
2
4
2
2
2
2
2
2
3
Clear SWE bit in FLMCR1
Clear EV bit in FLMCR1
Wait ( ) s
Wait ( ) s
Erase failure
n ( N ) ?
OK
*
2
NG
*
n
2
n + 1
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