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M27W064-110N1T Fiches technique(PDF) 4 Page - STMicroelectronics

No de pièce M27W064-110N1T
Description  64 Mbit 4Mb x16 3V Supply FlexibleROM??Memory
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27W064-110N1T Fiches technique(HTML) 4 Page - STMicroelectronics

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M27W064
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SUMMARY DESCRIPTION
The M27W064 is a 64 Mbit (4Mb x16) non-volatile,
One Time Programmable (OTP), FlexibleROM™
Memory. Read operations can be performed using
a single low voltage (2.7 to 3.6V) supply. Program
operations require an additional VPP (11.4 to
12.6V) power supply. On power-up the memory
defaults to Read mode where it can be read in the
same way as a ROM or EPROM.
Program commands are written to the Command
Interface of the memory. An on-chip Program Con-
troller (PC) simplifies the process of programming
the memory by taking care of all of the special op-
erations that are required to update the memory
contents.
The M27W064 features an innovative command,
Multiple Word Program, used to program large
streams of data. It greatly reduces the total pro-
gramming time when a large number of Words are
written to the memory at any one time. Using this
command the entire memory can be programmed
in 8s, compared to 36s using the standard Word
Program.
The end of a program operation can be detected
and any error conditions identified. The command
set required to control the memory is consistent
with JEDEC standards.
Chip Enable and Output Enable signals control the
bus operation of the memory. They allow simple
connection to most microprocessors, often without
additional logic.
The memory is offered in SO44 and TSOP48 (12
x 20mm) packages. The memory is supplied with
all the bits set to ’1’.
Figure 2. Logic Diagram
Table 1. Signal Names
AI05960
22
A0-A21
DQ0-DQ15
VCC
M27W064
E
VSS
16
G
VPP
A0-A21
Address Inputs
DQ0-DQ15
Data Inputs/Outputs
E
Chip Enable
G
Output Enable
VCC
Supply Voltage read
VPP
Supply Voltage program
VSS
Ground
NC
Not Connected Internally


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