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AT49BV321-85TI Datasheet(PDF) 10 Page - ATMEL Corporation

Part # AT49BV321-85TI
Description  32-megabit (2M x 16/4M x 8) 3-volt Only Flash Memory
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT49BV321-85TI Datasheet(HTML) 10 Page - ATMEL Corporation

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AT49BV/LV320(T)/321(T)
1494H–FLASH–01/03
Figure 3. Toggle Bit Algorithm
(Configuration Register = 00)
Note:
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”.
START
Read I/O7 - I/O0
Read I/O7 - I/O0
Toggle Bit =
Toggle?
I/O3, I/O5 = 1?
Read I/O7 - I/O0
Twice
Toggle Bit =
Toggle?
Program/Erase
Operation Not
Successful, Write
Product ID
Exit Command
Program/Erase
Operation
Successful
NO
NO
NO
YES
YES
YES
Figure 4. Toggle Bit Algorithm
(Configuration Register = 01)
Note:
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”.
START
Read I/O7 - I/O0
Read I/O7 - I/O0
Toggle Bit =
Toggle?
I/O3, I/O5 = 1?
Read I/O7 - I/O0
Twice
Toggle Bit =
Toggle?
Program/Erase
Operation Not
Successful, Write
Product ID
Exit Command
Program/Erase
Operation
Successful,
Write Product ID
Exit Command
NO
NO
NO
YES
YES
YES


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