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Refer to Programming Characteristics 3. Input Test Waveforms and Measurement Levels.

OE may be delayed up to t. Address to Output Delay. OE to Output Delay. Atmel’s AT27C has additional features to 27c40 high quality and efficient production use.

AC Waveforms for Read Operation. Any byte can be accessed in less than 70 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems. Integrated Product Identification Code. Power consumption is typically 8 mA in active mode and less than Input AC drive levels are 0.


27C040 – 27C040 4096K EPROM Datasheet

Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4. F bulk electrolytic capacitor should be utilized, again. At a minimum, a 0. This capacitor should be connected between the V. The Rapid Programming Algorithm reduces the time required to program the part and guaran- tees reliable programming. Switching between active and standby conditions via the Chip Enable pin may produce tran- sient voltage excursions.

The supply current would then be the sum of I. Voltage on Any Pin with Respect to Ground All Ai inputs are held low V. The AT27C requires only one 5V power supply in normal read mode operation. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

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27C (ATMEL) – 4-megabit k X 8 Otp Eprom | eet

This capacitor datadheet be positioned as. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent dam- age to the device. Voltage on A9 with Respect to Ground AC Characteristics for Read Operation. Atmel’s scaled CMOS technology provides low active power consumption, and fast program- ming.


CE to Output Delay. Typical values for nominal supply voltage. Timing measurement references are 0. The device features two-line control CE, OE to eliminate bus contention in high-speed systems. Output float is defined as the point when data is no longer driven.

This feature is used by industry standard programming equipment to select the proper programming algo- rithms and voltages. Commercial and Industrial Temperature Ranges.

27C040 Datasheet PDF

Product Identification Code electronically identifies the device and manufacturer. Unless 2c7040 by the system design, these transients may exceed datasheet limits, resulting in device non-conformance. 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.

Two identifier bytes may be selected. Programming time is typically only