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M27V402-150B4TR Datasheet

  • M27V402-150B4TR

  • 4 Mbit 256Kb x 16 Low Voltage UV EPROM and OTP EPROM

  • 15頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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M27V402
4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM
s
LOW VOLTAGE READ OPERATION:
3V to 3.6V
FAST ACCESS TIME: 120ns
LOW POWER CONSUMPTION:
鈥?Active Current 15mA at 5MHz
鈥?Standby Current 20碌A(chǔ)
40
40
s
s
s
s
s
PROGRAMMING VOLTAGE: 12.75V
鹵
0.25V
PROGRAMMING TIME: 100碌s/byte (typical)
ELECTRONIC SIGNATURE
鈥?Manufacturer Code: 20h
鈥?Device Code: 8Dh
1
1
FDIP40W (F)
PDIP40 (B)
DESCRIPTION
The M27V402 is a low voltage, low power 4 Mbit
UV erasable and electrically programmable
EPROM, ideally suited for handheld and portable
microprocessor systems requiring large programs.
It is organized as 262,144 by 16 bits.
The M27V402 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 FDIP40W (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 to the
device by following the programming procedure.
Table 1. Signal Names
A0-A17
Q0-Q15
E
G
V
PP
V
CC
V
SS
Address Inputs
Data Outputs
Chip Enable
Output Enable
Program Supply
Supply Voltage
Ground
PLCC44 (K)
TSOP40 (N)
10 x 20 mm
Figure 1. Logic Diagram
VCC
VPP
18
A0-A17
16
Q0-Q15
E
G
M27V402
VSS
AI01819
May 1998
1/15

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