AT49BV320 ATMEL [ATMEL Corporation], AT49BV320 Datasheet - Page 10

• Manufacturer Part Number: AT49BV320
• Description: 32-megabit (2M x 16/4M x 8) 3-volt Only Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 3. Toggle Bit Algorithm
(Configuration Register = 00)
Note:
10
NO
1. The system should recheck the toggle bit even if
AT49BV/LV320(T)/321(T)
I/O5 = “1” because the toggle bit may stop toggling
as I/O5 changes to “1”.
Successful, Write
Read I/O7 - I/O0
Read I/O7 - I/O0
Read I/O7 - I/O0
Program/Erase
I/O3, I/O5 = 1?
Operation Not
Exit Command
Toggle Bit =
Toggle Bit =
Product ID
Toggle?
Toggle?
START
Twice
YES
YES
YES
NO
NO
Program/Erase
Successful
Operation
Figure 4. Toggle Bit Algorithm
(Configuration Register = 01)
Note:
NO
1. The system should recheck the toggle bit even if
I/O5 = “1” because the toggle bit may stop toggling
as I/O5 changes to “1”.
Successful, Write
Read I/O7 - I/O0
Read I/O7 - I/O0
Read I/O7 - I/O0
Program/Erase
I/O3, I/O5 = 1?
Exit Command
Operation Not
Toggle Bit =
Toggle Bit =
Product ID
Toggle?
Toggle?
START
Twice
YES
YES
YES
NO
NO
Write Product ID
Program/Erase
Exit Command
Successful,
Operation
1494H–FLASH–01/03