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White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
W78M64VP-XSBX
October 2008
Rev. 2
ADVANCED
White Electronic Designs Corp. reserves the right to change products or specications without notice.
TABLE 8 WRITE BUFFER PROGRAM
(LLD Functions Used = lld_WriteToBufferCmd, lld_ProgramBufferToFlashCmd)
Cycle
Description
Operation
Byte Address
Word Address
Data
1
Unlock
Write
Base + AAAh
Base + 555h
00AAh
2
Unlock
Base + 555h
Base + 2AAh
0055h
3
Write Buffer Load Command
Sector Address
0025h
4
Write Word Count
Sector Address
Word Count (N-1)h
Number of words (N) loaded into the wrtie buffer can be from 1 to 32 words (1 to 64 bytes).
5 to 36
Load Buffer Word N
Write
Program Address, Word N
Word N
Last
Write Buffer to Flash
Sector Address
0029h
Notes
1. Base = Base Address.
2. Last = Last cycle of write buffer program operation; depending on number of words written, the total number of cycles may be from 6 to 37.
3. For maximum efciency, it is recommended that the write buffer be loaded with the highest number of words (N words) possible.
TABLE 9 SECTOR ERASE
(LLD Function = lld_SectorEraseCmd)
Cycle
Description
Operation
Byte Address
Word Address
Data
1
Unlock
Write
Base + AAAh
Base + 555h
00AAh
2
Unlock
Base + 555h
Base + 2AAh
0055h
3
Setup Command
Base + AAAh
Base + 555h
0080h
4
Unlock
Base + AAAh
Base + 555h
00AAh
5
Unlock
Base + 555h
Base + 2AAh
0055h
6
Sector Erase Command
Sector Address
0030h
Unlimited additional sectors may be selected for erase; command(s) must be written within 50μs
Notes
1. Base = Base Address.
2. Last = Last cycle of write buffer program operation; depending on number of words written, the total number of cycles may be from 6 to 37.
3. For maximum efciency, it is recommended that the write buffer be loaded with the highest number of words (N words) possible.
TABLE 10 SECTOR ERASE
(LLD Function = lld_SectorEraseCmd)
Cycle
Description
Operation
Byte Address
Word Address
Data
1
Unlock
Write
Base + AAAh
Base + 555h
00AAh
2
Unlock
Base + 555h
Base + 2AAh
0055h
3
Setup Command
Base + AAAh
Base + 555h
0080h
4
Unlock
Base + AAAh
Base + 555h
00AAh
5
Unlock
Base + 555h
Base + 2AAh
0055h
6
Chip Erase Command
Base + AAAh
Base + 555h
0010h