AT27C020-12JC View Datasheet(PDF) - Atmel Corporation
Part Name
Description
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AT27C020-12JC Datasheet PDF : 9 Pages
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AT27C020
AC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V,VPP = 13.0 ± 0.25V
Limits
Symbol Parameter
Test Condition (1)
Min
Max
Units
tAS
Address Setup Time
2
µs
tCES
CE Setup Time
2
µs
tOES
OE Setup Time
Input Rise and Fall Times:
2
µs
tDS
Data Setup Time
(10% to 90%) 20 ns.
2
µs
tAH
Address Hold Time
Input Pulse Levels:
0
µs
tDH
Data Hold Time
0.45V to 2.4V
2
µs
tDFP
OE High to Output Float Delay(2)
0
Input Timing Reference Level:
tVPS
VPP Setup Time
0.8V to 2.0V
2
130
ns
µs
tVCS
VCC Set up Time
2
µs
tPW
PGM Program Pulse Width(3)
Output Timing Reference Level:
95
0.8V to 2.0V
105
µs
tOE
Data Valid from OE
150
ns
tPRT
VPP Pulse Rise Time During
Programming
50
ns
Notes:
1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven
— see timing diagram.
3. Program Pulse width tolerance is 100 µs ± 5%.
Atmel’s 27C020 Integrated Product Identification Code
Codes
Manufacturer
Device Type
Pins
A0
O7
O6
O5
O4
O3
O2
O1
O0
0
0
0
0
1
1
1
1
0
1
1
0
0
0
0
1
1
0
Hex Data
1E
86
7
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