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September 1998

M27V800

8 Mbit (1Mb x8 or 512Kb x16)

Low Voltage UV EPROM and OTP EPROM

s

LOW VOLTAGE READ OPERATION:

3V to 3.6V

s

FAST ACCESS TIME: 100ns

s

BYTE-WIDE or WORD-WIDE

CONFIGURABLE

s

8 Mbit MASK ROM REPLACEMENT

s

LOW POWER CONSUMPTION

– Active Current 30mA at 8MHz

– Standby Current 20

µA

s

PROGRAMMING VOLTAGE: 12.5V

± 0.25V

s

PROGRAMMING TIME: 100

µs/byte (typical)

s

ELECTRONIC SIGNATURE

– Manufacturer Code: 0020h

– Device Code: 00B2h

DESCRIPTION

The M27V800 is a low voltage 8 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. It is organised as either 1 Mbit

words of 8 bit or 512 Kbit words of 16 bit. The pin-

out is compatible with a 8 Mbit Mask ROM.

1

42

1

42

44

1

FDIP42W (F)

PDIP42 (B)

SO44 (M)

PLCC44 (K)

Figure 1. Logic Diagram

AI01851

19

A0-A18

BYTEVPP

Q0-Q14

VCC

M27V800

G

E

VSS

15

Q15A–1

Table 1. Signal Names

A0-A18

Address Inputs

Q0-Q7

Data Outputs

Q8-Q14

Data Outputs

Q15A–1

Data Output / Address Input

E

Chip Enable

G

Output Enable

Byte Mode / Program Supply

Supply Voltage

Ground