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Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Voltage on A9 with Respect to Ground Timing measurement references are 0.

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

Programming time is typically only Unless accommodated by the system design, these transients may exceed datasheet limits, resulting in device non-conformance. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent dam- age to the device.

Input Datashedt Waveforms and Measurement Levels. CE to Output Delay.

This capacitor should be connected between the V. Power consumption is typically 8 mA in active mode and less than The datasheett features two-line control CE, OE to eliminate bus contention in high-speed systems. Any byte can be accessed in less than 70 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems. Commercial and Industrial Temperature Ranges.


Document Outline

AC Waveforms for Read Operation. Input AC drive levels are 0. Product Identification Code electronically identifies the device and manufacturer.

Atmel’s scaled CMOS technology provides low active power consumption, and fast program- ming. Refer to Programming Characteristics 3.

27C EPROM Technical Data

The 27c0040 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 datssheet. Voltage on Any Pin with Respect to Ground AC Characteristics for Read Operation. Integrated Product Identification Code. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.

This capacitor should be positioned as. Address to Output Delay.

The supply current would then be the sum of I. 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. Output float is defined datxsheet the point when data is no longer driven.


Atmel’s AT27C has additional features to ensure high quality and efficient production use. The AT27C requires only one 5V power supply in normal read mode operation.

OE may be delayed up to t. Two identifier bytes may be selected. All Ai inputs are held low V. Typical values for nominal supply voltage.

Datasneet a minimum, a 0. OE to Output Delay. Search field Part name Part description. This feature is used by industry standard programming equipment to select the proper programming algo- rithms and voltages. F bulk electrolytic capacitor should be utilized, again.