AT27C800 Просмотр технического описания (PDF) - Atmel Corporation
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AT27C800 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
tAS
tOES
tDS
tAH
tDH
tDFP
tVPS
tVCS
tPW
tOE
tPRT
Parameter
Address Setup Time
OE Setup Time
Data Setup Time
Address Hold Time
Data Hold Time
OE High to Output Float Delay(2)
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)
Input Rise and Fall Times:
(10% to 90%) 20 ns.
Input Pulse Levels:
45V to 2.4V
Input Pulse Levels:
0.8V to 2.0V
Input Timing Reference Level:
0.8V to 2.0V
Output Timing Reference Level:
0.8V to 2.0V
Limits
Min
Max
2
2
2
0
2
0
130
2
2
47.5
52.5
150
50
Units
µs
µs
µs
µs
µs
ns
µs
µs
µs
ns
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 50 µs ± 5%.
Atmel’s 27C800 Integrated Product Identification Code
Pins
A0
015 014 013 012 011 010
09
08
Codes
07
06
05
04
03
02
01
00
Manufacturer
0
0
0
0
1
1
1
1
0
Device Type
1
1
1
1
1
1
0
0
0
Hex Data
1E1E
F8F8
8
AT27C800
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