AT27C080-90TU 데이터 시트보기 (PDF) - Atmel Corporation

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AT27C080-90TU

8-Megabit (1M x 8) OTP EPROM

Atmel Corporation 

AT27C080

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)

VPP Supply Voltage with

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

Integrated UV Erase Dose............................. 7258 W•sec/cm2

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum 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 conditions beyond those

indicated in the operational sections of this

specification is not implied. Exposure to abso-

lute maximum rating conditions for extended

periods may affect device reliability.

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

0360L–EPROM–12/07

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