at52br3224a ATMEL Corporation, at52br3224a Datasheet - Page 12

• Manufacturer Part Number: at52br3224a
• Description: At52br3224a 32-megabit Flash + 4-megabit/ 8-megabit Sram Stack Memory
• Manufacturer: ATMEL Corporation

Figure 3. Toggle Bit Algorithm
(Configuration Register = 00)
Note:
12
NO
1. The system should recheck the toggle bit even if
AT52BR3224A(T)/3228A(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?
Exit Command
Operation Not
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
3338B–STKD–6/03