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AT27C040-90TI Datasheet(PDF) 3 Page - ATMEL Corporation |
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AT27C040-90TI Datasheet(HTML) 3 Page - ATMEL Corporation |
3 / 14 page 3 0189H–EPROM–12/07 AT27C040 3. Switching 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 V CC 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 V CC 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 *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent dam- age 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 absolute maximum rating conditions for extended periods may affect device reliability. Storage Temperature ..................................... -65°C to +150°C Voltage on Any Pin with Respect to Ground ............................................-2.0V to +7.0V Voltage on A9 with Respect to Ground .........................................-2.0V to +14.0V V PP Supply Voltage with Respect to Ground ..........................................-2.0V to +14.0V |
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