4
AT27C040
0189F–EPROM–4/03
Notes: 1. V
CC
must be applied simultaneously or before V
PP
, and removed simultaneously or after V
PP
.
2. 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
.
Note: 1. 2, 3, 4, 5 – see AC Waveforms for Read Operation
DC and AC Operating Conditions for Read Operation
AT27C040-70 AT27C040-90 AT27C040-12 AT27C040-15
Operating
Temperature (Case)
Com. 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C
Ind. -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C
V
CC
Power Supply 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10%
DC and Operating Characteristics for Read Operation
Symbol Parameter Condition Min Max Units
I
LI
Input Load Current V
IN
= 0V to V
CC
±1 µA
I
LO
Output Leakage Current V
OUT
= 0V to V
CC
±5 µA
I
PP1
(2)
V
PP
(1)
Read/Standby Current V
PP
= V
CC
10 µA
I
SB
V
CC1
(1)
Standby Current I
SB1
(CMOS), CE = V
CC
± 0.3V 100 µA
I
SB2
(TTL), CE = 2.0 to V
CC
+ 0.5V 1 mA
I
CC
V
CC
Active Current f = 5 MHz, I
OUT
= 0 mA, CE = V
IL
30 mA
V
IL
Input Low Voltage -0.6 0.8 V
V
IH
Input High Voltage 2.0 V
CC
+ 0.5 V
V
OL
Output Low Voltage I
OL
= 2.1 mA 0.4 V
V
OH
Output High Voltage I
OH
= -400 µA2.4V
AC Characteristics for Read Operation
Symbol Parameter Condition
AT27C040
Units
-70 -90 -12 -15
Min Max Min Max Min Max Min Max
t
ACC
(3)
Address to Output Delay CE = OE
= V
IL
70 90 120 150 ns
t
CE
(2)
CE to Output Delay OE = V
IL
70 90 120 150 ns
t
OE
(2)(3)
OE to Output Delay CE = V
IL
30 35 35 40 ns
t
DF
(4)(5)
OE or CE High to Output Float, whichever
occurred first
20 20 30 30 ns
t
OH
Output Hold from Address, CE or OE,
whichever occurred first
0000ns
