4
0632F–EPROM–12/07
AT27C2048
Notes: 1. X can be V
IL
or V
IH
.
2. Refer to the Programming characteristics.
3. V
H
= 12.0 ± 0.5V.
4. Two identifier words may be selected. All Ai inputs are held low (V
IL
), except A9, which is set to V
H
, and A0, which is toggled
low (V
IL
) to select the Manufacturer’s Identification word and high (V
IH
) to select the Device Code word.
5. Standby V
CC
current (I
SB
) is specified with V
PP
= V
CC
. V
CC
> V
PP
will cause a slight increase in I
SB
.
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
.
6. Operating Modes
Mode/Pin CE OE PGM Ai V
PP
Outputs
Read V
IL
V
IL
X
(1)
Ai X
(1)
D
OUT
Output Disable X V
IH
X X X High Z
Standby V
IH
XX X X
(5)
High Z
Rapid Program
(2)
V
IL
V
IH
V
IL
Ai V
PP
D
IN
PGM Verify V
IL
V
IL
V
IH
Ai V
PP
D
OUT
PGM Inhibit V
IH
XX X V
PP
High Z
Product Identification
(4)
V
IL
V
IL
X
A9 = V
H
(3)
A0 = V
IH
or V
IL
A1 - A16 = V
IL
V
CC
Identification Code
7. DC and AC Operating Conditions for Read Operation
AT27C2048
-55 -90
Industrial Operating Temperature (Case) -40° C - 85° C-40° C - 85° C
V
CC
Power Supply 5V ± 10% 5V ± 10%
8. DC and Operating Characteristics for Read Operation
Symbol Parameter Condition Min Max Units
I
LI
Input Load Current V
IN
= 0V to V
CC
± 1µA
I
LO
Output Leakage Current V
OUT
= 0V to V
CC
± 5µA
I
PP1
(2)
V
PP
(1)
Read/Standby Current V
PP
= V
CC
10 µA
I
SB
V
CC
(1)
Standby Current
I
SB1
(CMOS)
CE
= V
CC
± 0.3V
100 µA
I
SB2
(TTL)
CE
= 2.0 to V
CC
+ 0.5V
1mA
I
CC
V
CC
Active Current f = 5 MHz, I
OUT
= 0 mA, CE = V
IL
35 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 µA 2.4 V
