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M34A02 Datasheet

  • M34A02

  • 2 Kbit Serial SMBus EEPROM for ACR Card Configuration

  • 126.03KB

  • 15頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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M34A02
2 Kbit Serial SMBus EEPROM for ACR Card Configuration
PRODUCT PREVIEW
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Two Wire SMBus Serial Interface
2.7V to 3.6V Single Supply Voltage
Hardware Write Control
BYTE and PAGE WRITE (up to 16 Bytes)
RANDOM and SEQUENTIAL READ Modes
Self-Timed Programming Cycle
Automatic Address Incrementing
Enhanced ESD/Latch-Up Behavior
More than 1 Million Erase/Write Cycles
More than 40 Year Data Retention
8
1
SO8 (MN)
150 mil width
DESCRIPTION
These electrically erasable programmable
memory (EEPROM) devices are organized as
256x8 bits, and operate down to 2.7 V.
These devices are available in Plastic Small
Outline and Thin Shrink Small Outline packages.
These devices are written by the ACR card-issuer,
and then accessed in Read mode in the
application, using the ACR Serial Bus protocol.
This is a two wire serial interface that uses a bi-
directional data bus and serial clock. The device
carries a built-in 4-bit Device Type Identifier code
(1011).
The device behaves as a slave in the ACR Serial
Bus protocol, with all memory operations
synchronized by the serial clock. Read and Write
operations are initiated by a Start condition,
generated by the bus master. The Start condition
8
1
TSSOP8 (DW)
169 mil width
Figure 1. Logic Diagram
VCC
3
E0-E2
SDA
M34A02
Table 1. Signal Names
E0, E1, E2
SDA
SCL
WC
V
CC
V
SS
Chip Enable
Serial Data
Serial Clock
Write Control
Supply Voltage
Ground
SCL
WC
VSS
AI03794
April 2001
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/15

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