at52br3224 ATMEL Corporation, at52br3224 Datasheet - Page 12

• Manufacturer Part Number: at52br3224
• Description: Single Plane Flash Combined With Sram
• Manufacturer: ATMEL Corporation

Figure 3. Toggle Bit Algorithm
(Configuration Register = 00)
Note:
12
NO
1. The system should recheck the toggle bit even if
AT52BR3224(T)/3228(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?
Operation Not
Exit Command
Toggle Bit =
Toggle Bit =
Product ID
Toggle?
Toggle?
START
Twice
YES
YES
YES
NO
NO
Write Product ID
Program/Erase
Exit Command
Successful,
Operation
1682A–10/01