AT27C040-90TC View Datasheet(PDF) - Atmel Corporation
Part Name
Description
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AT27C040-90TC Datasheet PDF : 13 Pages
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AT27C040
AC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Symbol Parameter
Test Conditions(1)
Limits
Min
Max
Units
tAS
tOES
tDS
tAH
tDH
tDFP
tVPS
tVCS
tPW
tOE
tPRT
Notes:
Address Setup Time
Input Rise and Fall Times:
2
µs
OE Setup Time
(10% to 90%) 20 ns
2
µs
Data Setup Time
Input Pulse Levels:
2
µs
Address Hold Time
0.45V to 2.4V
0
µs
Data Hold Time
Input Timing Reference Level:
2
OE High to Output Float Delay(2)
0.8V to 2.0V
0
µs
130
ns
VPP Setup Time
VCC Setup Time
CE Program Pulse Width(3)
Data Valid from OE(2)
2
µs
Output Timing Reference Level:
0.8V to 2.0V
2
µs
95
105
µs
150
ns
VPP Pulse Rise Time During
Programming
50
ns
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 µsec ± 5%.
Atmel’s AT27C040 Integrated Product Identification Code
Codes
Manufacturer
Device Type
Pins
A0
O7
O6
O5
O4
O3
O2
O1
O0
Hex Data
0
0
0
0
1
1
1
1
0
1E
1
0
0
0
0
1
0
1
1
0B
7
0189F–EPROM–4/03
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