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M27W400 - 4 Mbit 512Kb x8 or 256Kb x16 Low Voltage UV EPROM and OTP EPROM

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Datasheet Details

Part number M27W400
Manufacturer STMicroelectronics
File Size 140.09 KB
Description 4 Mbit 512Kb x8 or 256Kb x16 Low Voltage UV EPROM and OTP EPROM
Datasheet download datasheet M27W400 Datasheet

General Description

The M27W400 is a low voltage 4 Mbit EPROM offered in the two range UV (Ultra Violet Erase) and OTP (one time programmable).

It is ideally suited for microprocessor systems requiring large data or program storage.

It is organised as either 512 Kwords of 8 bit or 256 Kwords of 16 bit.

Overview

M27W400 4 Mbit (512Kb x8 or 256Kb x16) Low Voltage UV EPROM and OTP EPROM s 2.7 to 3.6V LOW VOLTAGE in READ OPERATION READ ACCESS TIME: – 80ns at VCC = 3.0 to 3.6V – 100ns at VCC = 2.7 to 3.6V 40 40 s s BYTE-WIDE or WORD-WIDE CONFIGURABLE 4 Mbit MASK ROM REPLACEMENT LOW POWER CONSUMPTION – Active Current 20mA at 8MHz – Stand-by Current 15µA 1 1 FDIP40W (F) PDIP40 (B) s s s s s PROGRAMMING VOLTAGE: 12.5V ± 0.25V PROGRAMMING TIME: 50µs/word ELECTRONIC SIGNATURE – Manufacturer Code: 20h – Device Code: B8h Figure 1.

Key Features

  • a 2-line control function which accommodates the use of multiple memory connection. The two-line control function allows: a. the lowest possible memory power dissipation b. complete assurance that output bus contention will not occur. For the most efficient use of these two control lines, E should be decoded and used as the primary device selecting function, while G should be made a common connection to all devices in the array and connected to the READ line from the system control bus. This ens.

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