Atmel AT27C1024
Table 5-6.
DC programming characteristics
T A = 25 ± 5°C, V CC = 6.5 ± 0.25V, V PP = 13.0 ± 0.25V
Limits
Symbol
Parameter
Test conditions
Min
Max
Units
I LI
V IL
V IH
V OL
Input load current
Input low level
Input high level
Output low voltage
V IN = V IL , V IH
I OL = 2.1mA
-0.6
2.0
±10
0.8
V CC + 0.1
0.4
μA
V
V
V
V OH
I CC2
Output high voltage
V CC supply current (program and verify)
I OH = -400μA
2.4
50
V
mA
I PP2
V ID
V PP supply current
A9 product identification voltage
CE = PGM = V IL
11.5
30
12.5
mA
V
Table 5-7.
AC programming characteristics
T A = 25 ? 5 ? C, V CC = 6.5 ? 0.25V, V PP = 13.0 ? 0.25V
Limits
Test conditions
Symbol
t AS
t CES
t OES
t DS
t AH
t DH
Parameter
Address setup time
CE setup time
OE setup time
Data setup time
Address hold time
Data hold time
(1)
Input rise and fall times
(10% to 90%) 20ns
Input pulse levels
0.45V to 2.4V
Min
2
2
2
2
0
2
Max
Units
μs
μs
μs
μs
μs
μs
t DFP
t VPS
OE high to output float delay
V PP setup time
(2)
Input timing reference level
0.8V to 2.0V
0
2
130
ns
μs
t VCS
t PW
V CC setup time
PGM program pulse width (3)
Output timing reference level
0.8V to 2.0V
2
95
105
μs
μs
t OE
t PRT
Data valid from OE
V PP pulse rise time during programming
50
150
ns
ns
Notes:
1. V CC must be applied simultaneously with or before V PP and removed simultaneously with or after V PP .
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 100μsec ?? 5%.
Table 5-8.
The Atmel AT27C1024 integrated product identification code
Pins
Hex
Codes
Manufacturer
Device type
A0
0
1
O15-O8
0
0
O7
0
1
O6
0
1
O5
0
1
O4
1
1
O3
1
0
O2
1
0
O1
1
0
O0
0
1
data
001E
00F1
7
0019N–EPROM–4/11
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