AM28F020A-70PCB View Datasheet(PDF) - Advanced Micro Devices
Part Name
Description
MFG CO.
AM28F020A-70PCB
Advanced Micro Devices
'AM28F020A-70PCB' PDF : 35 Pages View PDF
AC Characteristics—Write (Erase/Program) Operations
Parameter Symbols
Am28F020A Speed Options
JEDEC Standard Description
-70 -90 -120 -150 -200 Unit
tAVAV
tWC
tAVWL tAS
tWLAX tAH
tDVWH tDS
tWHDX tDH
tOEH
Write Cycle Time (4)
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Output Enable Hold Time for Embedded
Algorithm only
Min 70 90 120 150 200 ns
Min
0
0
0
0
0 ns
Min 45 45 50 60 75 ns
Min 45 45 50 50 50 ns
Min 10 10 10 10 10 ns
Min 10 10 10 10 10 ns
tGHWL
tELWLE tCSE
tWHEH tCH
tWLWH tWP
tWHWL tWPH
tWHWH3
tWHWH4
tVPEL
tVCS
tVPPR
tVPPF
tLKO
Read Recovery Time Before Write
CE# Embedded Algorithm Setup Time
CE# Hold Time
Write Pulse Width
Write Pulse Width High
Embedded Program Operation (2)
Embedded Erase Operation (3)
VPP Setup Time to Chip Enable Low (4)
VCC Setup Time (4)
VPP Rise Time (4) 90% VPPH
VPP Fall Time (4) 90% VPPL
VCC < VLKO to Reset (4)
Min
0
0
0
0
0
ns
Min 20 20 20 20 20 ns
Min
0
0
0
0
0 ns
Min 45 45 50 60 60 ns
Min 20 20 20 20 20 ns
Min 14 14 14 14 14 µs
Typ
5
5
5
5
5 sec
Min 100 100 100 100 100 ns
Min 50 50 50 50 50 µs
Min 500 500 500 500 500 ns
Min 500 500 500 500 500 ns
Min 100 100 100 100 100 ns
Notes:
1. Read timing characteristics during read/write operations are the same as during read-only operations. Refer to AC
Characteristics for Read Only operations.
2. Embedded Program Operation of 14 µs consists of 10 µs program pulse and 4 µs write recovery before read. This is the
minimum time for one pass through the programming algorithm.
3. Embedded Erase operation of 5 sec consists of 4 sec array pre-programming time and one sec array erase time. This is a
typical time for one embedded erase operation.
4. Not 100% tested.
Am28F020A
25
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