AM28F020 Advanced Micro Devices, AM28F020 Datasheet - Page 12

• Manufacturer Part Number: AM28F020
• Description: 2 Megabit (256 K x 8-Bit) CMOS 12.0 Volt/ Bulk Erase Flash Memory
• Manufacturer: Advanced Micro Devices

12
No
Erase Error
PLSCNT =
Apply V
1000
Yes
PPL
Figure 1.
Increment
PLSCNT
Flasherase Electrical Erase Algorithm
Am28F020
Write Erase Setup Command
Program All Bytes to 00h
Yes
Write Reset Command
Write Erase Command
Read Data from Device
Erasure Completed
Time out 10 ms
Write Erase Verify
No
Address = 00h
Time out 6 µs
Last Address
PLSCNT = 0
Data = 00h
Data = FFh
Apply V
Apply V
Start
No
Yes
Yes
PPL
PPH
No
Increment Address
11559G-6