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AT93C46B-10SI-2.7 Datasheet

  • AT93C46B-10SI-2.7

  • 3-Wire Serial E2PROMs

  • 10頁

  • ATMEL   ATMEL

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AT93C46B
Features
鈥?/div>
x16 Organization Utilizing 鈥淣o Connects鈥?for Pins 6 and 7
鈥?/div>
Low Voltage and Standard Voltage Operation
鈥?5.0 (V
CC
= 4.5V to 5.5V)
鈥?2.7 (V
CC
= 2.7V to 5.5V)
鈥?2.5 (V
CC
= 2.5V to 5.5V)
3-Wire Serial Interface
2 MHz Clock Rate (5V) Compatibility
Self-Timed Write Cycle (10 ms max)
High Reliability
鈥?Endurance: 1 Million Cycles
鈥?Data Retention: 100 Years
Automotive Grade and Extended Temperature Devices Available
8-Pin PDIP and JEDEC SOIC Packages
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Description
The AT93C46B provides 1024 bits of serial electrically erasable programmable read
only memory (EEPROM) organized as 64 words of 16 bits each. The device is opti-
mized for use in many industrial and commercial applications where low power and
low voltage operation are essential. The AT93C46B is available in space saving 8-pin
PDIP and 8-pin JEDEC packages.
The AT93C46B is enabled through the Chip Select pin (CS), and accessed via a 3-
wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock
(SK). Upon receiving a READ instruction at DI, the address is decoded and the data is
clocked out serially on the data output pin DO. The WRITE cycle is completely self-
timed and no separate ERASE cycle is required before WRITE. The WRITE cycle is
only enabled when the part is in the ERASE/WRITE ENABLE state. When CS is
brought 鈥渉igh鈥?following the initiation of a WRITE cycle, the DO pin outputs the
READY/BUSY status of the part.
The AT93C46B is available in 4.5V to 5.5V, 2.7V to 5.5V, and 2.5V to 5.5V versions.
3-Wire
Serial
E
2
PROMs
1K (64 x 16)
AT93C46B
Pin Configuration
Pin Name
CS
SK
DI
DO
GND
V
CC
NC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
No Connect
8-Pin PDIP
CS
SK
DI
DO
1
2
3
4
8
7
6
5
VCC
NC
NC
GND
8-Pin SOIC
CS
SK
DI
SO
1
2
3
4
8
7
6
5
VCC
NC
NC
GND
0917A-A鈥?1/97
1

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