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M27V800

8 Mbit (1Mb x8 or 512Kb x16)

Low Voltage UV EPROM and OTP EPROM

s

LOW VOLTAGE READ OPERATION:

3V to 3.6V

FAST ACCESS TIME: 100ns

BYTE-WIDE or WORD-WIDE

CONFIGURABLE

8 Mbit MASK ROM REPLACEMENT

1

1

42

42

s

s

s

s

LOW POWER CONSUMPTION

鈥?Active Current 30mA at 8MHz

鈥?Standby Current 20碌A(chǔ)

FDIP42W (F)

PDIP42 (B)

s

s

s

PROGRAMMING VOLTAGE: 12.5V

鹵

0.25V

PROGRAMMING TIME: 100碌s/byte (typical)

ELECTRONIC SIGNATURE

鈥?Manufacturer Code: 0020h

鈥?Device Code: 00B2h

1

44

SO44 (M)

PLCC44 (K)

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.

Figure 1. Logic Diagram

VCC

19

Q15A鈥?

15

Q0-Q14

M27V800

Table 1. Signal Names

A0-A18

Q0-Q7

Q8-Q14

Q15A鈥?

E

G

BYTEV

PP

V

CC

V

SS

Address Inputs

Data Outputs

Data Outputs

Data Output / Address Input

Chip Enable

Output Enable

Byte Mode / Program Supply

Supply Voltage

Ground

A0-A18

E

G

BYTEVPP

VSS

AI01851

September 1998

1/16

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