AT27C400 Просмотр технического описания (PDF) - Atmel Corporation
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AT27C400 Datasheet PDF : 10 Pages
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AC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Symbol Parameter
tAS
tOES
tDS
tAH
tDH
tDFP
Address Setup Time
OE Setup Time
Data Setup Time
Address Hold Time
Data Hold Time
OE High to
Output Float Delay(2)
tVPS
tVCS
tPW
tOE
tPRT
VPP Setup Time
VCC Setup Time
CE Program Pulse Width(3)
Data Valid from OE
BYTE/VPP Pulse Rise Time
During Programming
Test Conditions(1)
Limits
Min Max
2
2
2
Input Rise and Fall Times
0
(10% to 90%) 20ns 2
Input Pulse Levels
0.45V to 2.4V 0
130
Input Timing Reference Level
0.8V to 2.0V 2
Output Timing Reference Level
2
0.8V to 2.0V
47.5 52.5
150
50
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. Ouput Float is defined as the point where data is no longer driven — see timing diagram.
3. Program Pulse width tolerance is 50 µsec ± 5%.
Units
µs
µs
µs
µs
µs
ns
µs
µs
µs
ns
ns
Atmel’s 27C400 Integrated Product Identification Code
Codes
Manufacturer
Device Type
Pins
A0 O15 O14 O13 O12 O11 O10
O9
O8
O7
O6
O5
O4
O3
O2
O1
O0
Hex
Data
0
0
0
0
1
1
1
1
0
1E1E
1
1
1
1
1
0
1
0
0
F4F4
8
AT27C400
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