HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 641

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

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 23.12 Erase/Erase-Verify Flowchart
NG
NG
H'FF dummy write to verify address
, , , and N are shown in section 28, Flash Memory Characteristics.
Clear ESU bit in FLMCR2
Clear SWE bit in FLMCR1
Set SWE bit in FLMCR1
*
Set ESU bit in FLMCR2
Set block start address
All erase blocks erased?
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 ( x ) s
Wait ( y ) s
Wait ( ) 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
Rev. 2.0, 08/02, page 601 of 788
Wait ( ) s
Wait ( ) s
Erase failure
n ( N ) ?
OK
*
2
NG
*
2
n n + 1