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M27W800 fiches techniques PDF

STMicroelectronics - 8 Mbit 1Mb x 8 or 512Kb x 16 Low Voltage UV EPROM and OTP EPROM

Numéro de référence M27W800
Description 8 Mbit 1Mb x 8 or 512Kb x 16 Low Voltage UV EPROM and OTP EPROM
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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M27W800 fiche technique
M27W800
8 Mbit (1Mb x 8 or 512Kb x 16)
Low Voltage UV EPROM and OTP EPROM
s 2.7V to 3.6V LOW VOLTAGE in READ
OPERATION
s ACCESS TIME:
– 90ns at VCC = 3.0V to 3.6V
– 100ns at VCC = 2.7V to 3.6V
s BYTE-WIDE or WORD-WIDE
CONFIGURABLE
s 8 Mbit MASK ROM REPLACEMENT
s LOW POWER CONSUMPTION
– Active Current 30mA at 8MHz
– Standby Current 15µA
s PROGRAMMING VOLTAGE: 12.5V ± 0.25V
s PROGRAMMING TIME: 50µs/word
s ELECTRONIC SIGNATURE
– Manufacturer Code: 20h
– Device Code: B2h
DESCRIPTION
The M27W800 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.
The M27W800 operates in the read mode with a
supply voltage as low as 2.7V. The decrease in
operating power allows either a reduction of the
size of the battery or an increase in the time be-
tween battery recharges.
The FDIP42W (window ceramic frit-seal package)
has a transparent lid which allows the user to ex-
pose the chip to ultraviolet light to erase the bit pat-
tern. A new pattern can then be written rapidly to
the device by following the programming proce-
dure.
For applications where the content is programmed
only one time and erasure is not required, the
M27W800 is offered in PDIP42 and PLCC44 pack-
age.
42
1
FDIP42W (F)
42
1
PDIP42 (B)
PLCC44 (K)
Figure 1. Logic Diagram
VCC
19
A0-A18
E
G
BYTEVPP
M27W800
Q15A–1
15
Q0-Q14
VSS
AI03601
March 2000
1/15

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