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6.2
DC and AC Operating Conditions for Read Operation
Atmel AT27C040-70
Atmel AT27C040-90
Industrial Operating Temperature (Case)
V CC Power Supply
-40°C to 85°C
5V ?? 10%
-40°C to 85°C
5V ? 10%
6.3
DC and Operating Characteristics for Read Operation
Symbol
Parameter
Condition
Min
Max
Units
I LI
I LO
I PP1 (2)
I SB
I CC
V IL
V IH
V OL
Input Load Current
Output Leakage Current
V PP (1) Read/Standby Current
V CC1 (1) Standby Current
V CC Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
V IN = 0V to V CC
V OUT = 0V to V CC
V PP = V CC
I SB1 (CMOS), CE = V CC ? 0.3V
I SB2 (TTL), CE = 2.0 to V CC + 0.5V
f = 5MHz, I OUT = 0mA, CE = V IL
I OL = 2.1mA
-0.6
2.0
? 1
? 5
10
100
1
30
0.8
V CC + 0.5
0.4
μ A
μ A
μ A
μ A
mA
mA
V
V
V
V OH
Output High Voltage
I OH = -400 μ A
2.4
V
Notes: 1.
2.
V CC must be applied simultaneously with or before V PP , and removed simultaneously with or after V PP .
V PP may be connected directly to V CC , except during programming. The supply current would then be the
sum of I CC and I PP .
6.4
AC Characteristics for Read Operation
Atmel AT27C040
-70
-90
Symbol
t ACC (1)
t CE (1)
t OE (1)
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
Condition
CE = OE
= V IL
OE = V IL
CE = V IL
Min
Max
70
70
30
Min
Max
90
90
35
Units
ns
ns
ns
t DF (1)
t OH
Note:
1.
OE or CE High to Output Float; whichever occurred first.
Output Hold from Address, CE or OE; whichever occurred
first.
See AC waveforms for read operation.
0
20
0
20
ns
ns
Atmel AT27C040 [DATASHEET]
0189J–EPROM–10/2012
4
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