AT49BV802AT ATMEL [ATMEL Corporation], AT49BV802AT Datasheet - Page 8

• Manufacturer Part Number: AT49BV802AT
• Description: 8-megabit (512K x 16/ 1M x 8) 3-volt Only Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 1. Data Polling Algorithm
(Configuration Register = 00)
Notes:
8
NO
1. VA = Valid address for programming. During a sec-
2. I/O7 should be rechecked even if I/O5 = “1”
AT49BV802A(T)
Successful, Write
tor 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.
because I/O7 may change simultaneously with
I/O5.
Read I/O7 - I/O0
Read I/O7 - I/O0
Program/Erase
Operation Not
Exit Command
I/O7 = Data?
Product ID
I/O7 = Data?
Addr = VA
Addr = VA
I/O5 = 1?
START
NO
YES
NO
YES
YES
Program/Erase
Read Mode
Successful,
Operation
Device in
Figure 2. Data Polling Algorithm
(Configuration Register = 01)
Note:
NO
1. VA = Valid address for programming. During a sec-
Successful, Write
tor 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.
Read I/O7 - I/O0
Read I/O7 - I/O0
Read I/O7 - I/O0
Program/Erase
Operation Not
Exit Command
Toggle Bit =
Toggle Bit =
Product ID
I/O5 = 1?
Toggle?
Toggle?
START
Twice
YES
YES
YES
NO
NO
ID Exit Command
Program/Erase
Write Product
Successful,
Operation
3405C–FLASH–9/04