AT27C2048-55JI(1998) View Datasheet(PDF) - Atmel Corporation
Part Name
Description
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AT27C2048-55JI Datasheet PDF : 12 Pages
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AT27C2048
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)
VPP 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.
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 VCC +
0.75V dc which may overshoot to +7.0V for pulses of less than 20 ns.
Operating Modes
Mode/Pin
CE
OE PGM
Ai
VPP Outputs
Read
VIL
VIL
X(1)
Ai
X(1)
DOUT
Output Disable
X
VIH
X
X
X High Z
Standby
Rapid Program(2)
VIH
X
X
X
X(5) High Z
VIL
VIH
VIL
Ai
VPP
DIN
PGM Verify
VIL
VIL
VIH
Ai
VPP
DOUT
PGM Inhibit
VIH
X
X
X
VPP High Z
Product Identification(4)
A9 = VH(3)
VIL
VIL
X
A0 = VIH or VIL
VCC Identification Code
A1 - A16 = VIL
Notes: 1. X can be VIL or VIH.
2. Refer to the Programming characteristics.
3. VH = 12.0 ± 0.5V.
4. Two identifier words may be selected. All Ai inputs are held low (VIL), except A9, which is set to VH, and A0, which is toggled
low (VIL) to select the Manufacturer’s Identification word and high (VIH) to select the Device Code word.
5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB.
DC and AC Operating Conditions for Read Operation
Operating
Temperature (Case)
VCC Power Supply
Com.
Ind.
-55
0°C - 70°C
-40°C - 85°C
5V ± 10%
-70
0°C - 70°C
-40°C - 85°C
5V ± 10%
AT27C2048
-90
0°C - 70°C
-40°C - 85°C
5V ± 10%
-12
0°C - 70°C
-40°C - 85°C
5V ± 10%
-15
0°C - 70°C
-40°C - 85°C
5V ± 10%
3
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