AT27C512R

Features:

` Fast Read Access Time - 45 ns
` Low Power CMOS Operation
    100  A max. Standby
    20 mA max. Active at 5 MHz
` JEDEC Standard Packages
    28-Lead 600-mil PDIP
    32-Lead PLCC
    28-Lead TSOP and SOIC
` 5V ± 10% Supply
` High Reliability CMOS Technology
    2,000V ESD Protection
    200 mA Latchup Immunity
` Rapid™ Programming Algorithm - 100 s/byte (typical)
` CMOS and TTL Compatible Inputs and Outputs
` Integrated Product Identification Code
` Commercial and Industrial Temperature Ranges


Pinout




Specifications

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⁾

*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 absolute 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 V_CC + 0.75V dc which may overshoot to +7.0V for pulses of less than 20 ns.


Description

The AT27C512R is a low-power, high performance 524,288 bit one-time programmable read only memory (OTP EPROM) organized 64K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states on high performance microprocessor systems.

Atmel's scaled CMOS technology provides high speed, lower active power consumption, and significantly faster programming. Power consumption is typically only 8 mA in Active Mode and less than 10 mA in Standby.

The AT27C512R is available in a choice of industry standard JEDEC-approved one-time programmable (OTP) plastic PDIP, PLCC, SOIC, and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention.

With 64K byte storage capability, the AT27C512R allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media.

Atmel's AT27C512R has additional features to ensure high quality and efficient production use. The Rapid™Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 s/byte. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages.