th50vsf3681aasb TOSHIBA Semiconductor CORPORATION, th50vsf3681aasb Datasheet - Page 54

• Manufacturer Part Number: th50vsf3681aasb
• Description: Sram Flash Memory Mixed Multi-chip Package
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Block Protect
BPA: Block Address and ID Read Address (A6, A1, A0)
ID Read Address = (0, 1, 0)
Yes
Command Second Bus Write Cycle
Command Third Bus Write Cycle
Command First Bus Write Cycle
Remove V
Protect Another Block?
Verify Block Protect
Reset Command
Set up Address
Wait to 100 µs
RESET = V
Block Protect
Block Protect
Block Protect
Block Protect
PLSCNT = 1
Addr. = BPA
Data = 01h?
Wait to 4 µs
(XXXh/60h)
(XXXh/40h)
(BPA/60h)
Complete
ID
Start
from RESET
Yes
No
ID
No
Remove V
PLSCNT = PLSCNT + 1
Reset Command
TH50VSF3680/3681AASB
PLSCNT = 25?
Device Failed
ID
from RESET
No
Yes
2001-03-06 54/55