AT27C1024-12JI View Datasheet(PDF) - Atmel Corporation

Part Name

Description

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AT27C1024-12JI

1Mb (64K x 16) One-time Programmable Read-only Memory

Atmel Corporation 

AT27C1024

3. System Considerations

Switching between active and standby conditions via the Chip Enable pin may produce tran-

sient voltage excursions. Unless accommodated by the system design, these transients may

exceed datasheet limits, resulting in device non-conformance. At a minimum, a 0.1 µF high

frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This

capacitor should be connected between the VCC and Ground terminals of the device, as close

to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit

boards with large EPROM arrays, a 4.7 µF bulk electrolytic capacitor should be utilized, again

connected between the VCC and Ground terminals. This capacitor should be positioned as

close as possible to the point where the power supply is connected to the array.

4. Block Diagram

5. 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)

*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.

VPP Supply Voltage with

Respect to Ground ......................................-2.0V to + 14.0V(1)

Note: 1. Minimum 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.

3

0019M–EPROM–12/07

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