M27V401 データシートの表示（PDF） - STMicroelectronics

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M27V401

4 Mbit (512Kb x 8) Low Voltage UV EPROM and OTP EPROM

STMicroelectronics 

M27V401

4 Mbit (512Kb x 8) Low Voltage UV EPROM and OTP EPROM

NOT FOR NEW DESIGN

s M27V401 is replaced by the M27W401

s 3V to 3.6V LOW VOLTAGE in READ

OPERATION

s ACCESS TIME: 120ns

s LOW POWER CONSUMPTION:

– Active Current 15mA at 5MHz

– Standby Current 20µA

s PROGRAMMING VOLTAGE: 12.75V ± 0.25V

s PROGRAMMING TIME: 100µs/word

s ELECTRONIC SIGNATURE

– Manufacturer Code: 20h

– Device Code: 41h

DESCRIPTION

The M27V401 is a low voltage 4 Mbit EPROM of-

fered 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 and is organised as 524,288 by 8

bits.

The M27V401 operates in the read mode with a

supply voltage as low as 3V. The decrease in op-

erating power allows either a reduction of the size

of the battery or an increase in the time between

battery recharges.

The FDIP32W (window ceramic frit-seal package)

has a transparent lid which allow the user to ex-

pose the chip to ultraviolet light to erase the bit pat-

tern. A new pattern can then be written to the

device by following the programming procedure.

For applications where the content is programmed

only one time and erasure is not required, the

M27V401 is offered in PDIP32, PLCC32 and

TSOP32 (8 x 20 mm) packages.

32

1

FDIP32W (F)

32

1

PDIP32 (B)

PLCC32 (K)

TSOP32 (N)

8 x 20 mm

Figure 1. Logic Diagram

VCC VPP

19

A0-A18

8

Q0-Q7

E

M27V401

G

VSS

AI00695B

July 2000

This is information on a product still in production but not recommended for new designs.

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