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M27W401-80F6 数据表(PDF) 5 Page - STMicroelectronics

部件名 M27W401-80F6
功能描述  4 Mbit (512Kb x 8) Low Voltage UV EPROM and OTP EPROM
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M27W401-80F6 数据表(HTML) 5 Page - STMicroelectronics

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M27W401
Summary description
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1
Summary description
The M27W401 is a low voltage 4 Mbit EPROM offered 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 organised as 524,288 by 8 bits.
The M27W401 operates in the read mode with a supply voltage as low as 2.7V at –40 to
85°C temperature range. The decrease in operating 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 allows the
user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be
written to the device by following the programming procedure.
For application where the content is programmed only one time and erasure is not required,
the M27W401 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20 mm) packages.
In order to meet environmental requirements, ST offers the M27W401 in ECOPACK®
packages. ECOPACK packages are Lead-free. The category of second Level Interconnect
is marked on the package and on the inner box label, in compliance with JEDEC Standard
JESD97. The maximum ratings related to soldering conditions are also marked on the inner
box label.
ECOPACK is an ST trademark. ECOPACK® specifications are available at: www.st.com.
See Figure 1: Logic Diagram and Table 1: Signal descriptions for a brief overview of the
signals connected to this device.
Figure 1.
Logic Diagram
AI01590
19
A0-A18
Q0-Q7
VPP
VCC
M27W401
G
VSS
8
E


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