am28f020-120pi Advanced Micro Devices, am28f020-120pi Datasheet - Page 12

• Manufacturer Part Number: am28f020-120pi
• 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 = FFh
Apply V
Data = 00h
Apply V
Start
No
Yes
Yes
PPL
PPH
No
Increment Address
11559G-6