Absolute maximum ratings, Operating modes, Dc and ac operating conditions for read operation – Rainbow Electronics AT27C2048 User Manual
Page 3
AT27C2048
3
Note:
Maximum voltage is -0.6V dc which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is V
CC
+
0.75V dc which may overshoot to +7.0V for pulses of less than 20 ns.
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
.
Absolute Maximum Ratings*
Temperature Under Bias ................................ -55
°
C to +125
°
C
Storage Temperature ..................................... -65
°
C to +150
°
C
Voltage on Any Pin with
Respect to Ground .........................................-2.0V to +7.0V
(1)
Voltage on A9 with
Respect to Ground ......................................-2.0V to +14.0V
(1)
V
PP
Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V
(1)
*NOTICE:
Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions beyond those indicated in the operational sec-
tions of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect device reliability.
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
X
X
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
X
X
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
DC and AC Operating Conditions for Read Operation
AT27C2048
-55
-70
-90
-12
-15
Operating
Temperature (Case)
Com.
0
°
C - 70
°
C
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
-40
°
C - 85
°
C
V
CC
Power Supply
5V
±
10%
5V
±
10%
5V
±
10%
5V
±
10%
5V
±
10%