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May 1998

M27V101

1 Mbit (128Kb x 8) Low Voltage UV EPROM and OTP EPROM

s

LOW VOLTAGE READ OPERATION:

3V to 3.6V

s

FAST ACCESS TIME: 90ns

s

LOW POWER CONSUMPTION:

– Active Current 15mA at 5MHz

– Standby Current 20

µA

s

PROGRAMMING VOLTAGE: 12.75V

± 0.25V

s

PROGRAMMING TIME: 100

µs/byte (typical)

s

ELECTRONIC SIGNATURE

– Manufacturer Code: 20h

– Device Code: 05h

DESCRIPTION

The M27V101 is a low voltage 1 Mbit EPROM of-

fered in the two ranges UV (ultra violet erase) and

OTP (one time programmable). It is ideally suited

for microprocessor systems requiring large data or

program storage and is organized as 131,072 by 8

bits.

The M27V101 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.

Figure 1. Logic Diagram

AI00660B

17

A0-A16

P

Q0-Q7

VPP

VCC

M27V101

G

E

VSS

8

Table 1. Signal Names

A0-A16

Address Inputs

Q0-Q7

Data Outputs

E

Chip Enable

G

Output Enable

P

Program

Program Supply

Supply Voltage

Ground

1

32

32

1

FDIP32W (F)

PDIP32 (B)

PLCC32 (K)

TSOP32 (N)

8 x 20 mm