AT49BV802D Datasheet, PDF (10/31 Pages) ATMEL Corporation – 8-megabit (512K x 16/ 1M x 8) 3-volt Only Flash Memory

Figure 4-1. Data Polling Algorithm
(Configuration Register = 00)
START
Figure 4-2. Data Polling Algorithm
(Configuration Register = 01)
START
Read I/O7 - I/O0
Addr = VA
Read I/O7 - I/O0
Read I/O7 - I/O0
YES
I/O7 = Data?
NO
NO
I/O5 = 1?
YES
Read I/O7 - I/O0
Addr = VA
Toggle Bit =
NO
Toggle?
YES
NO
I/O5 = 1?
YES
Read I/O7 - I/O0
Twice
I/O7 = Data?
YES
NO
Program/Erase
Operation Not
Successful, Write
Product ID
Exit Command
Program/Erase
Operation
Successful,
Device in
Read Mode
Toggle Bit =
NO
Toggle?
YES
Program/Erase
Operation Not
Successful, Write
Product ID
Exit Command
Program/Erase
Operation
Successful,
Write Product
ID Exit Command
Notes:
1. VA = Valid address for programming. During a sector
erase operation, a valid address is any sector
address within the sector being erased. During chip
erase, a valid address is any non-protected sector
address.
2. I/O7 should be rechecked even if I/O5 = “1” because
I/O7 may change simultaneously with I/O5.
Note:
1. VA = Valid address for programming. During a sector
erase operation, a valid address is any sector
address within the sector being erased. During chip
erase, a valid address is any non-protected sector
address.
10 AT49BV802D(T)
3626A–FLASH–2/07