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AT24C256SC-09CT Datasheet

  • AT24C256SC-09CT

  • I2C Serial EEPROM

  • 12頁

  • ETC

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Features
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Low-voltage and Standard-voltage Operation
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鈥?5.0 (V
CC
= 4.5V to 5.5V)
鈥?2.7 (V
CC
= 2.7V to 5.5V)
Internally Organized 16,384 x 8 and 32,768 x 8
2-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bi-directional Data Transfer Protocol
1 MHz (5V) and 400 kHz (2.7V) Compatibility
64-byte Page Write Mode (Partial Page Writes Allowed)
Self-timed Write Cycle (5 ms Typical)
High Reliability
鈥?Endurance: 100,000 Write Cycles
鈥?Data Retention: 40 Years
鈥?ESD Protection: > 4000V
2-wire Serial
EEPROM Smart
Card Modules
128K (16,384 x 8)
256K (32,768 x 8)
Description
The AT24C128SC/256SC provides 131,072/262,144 bits of serial electrically erasable
and programmable read only memory (EEPROM) organized as 16,384/32,768 words
of 8 bits each. The devices are optimized for use in smart card applications where low-
power and low-voltage operation may be essential. The devices are available in
several standard ISO 7816 smart card modules (see Ordering Information). The entire
family is available in both high-voltage (4.5V to 5.5V) and low-voltage (2.7V to 5.5V)
versions. All devices are functionally equivalent to Atmel Serial EEPROM products
offered in standard IC packages (PDIP, SOIC, EIAJ, LAP), with the exception of the
slave address and Write Protect functions which are not required for smart card
applications.
AT24C128SC
AT24C256SC
Pin Configurations
Pad Name
VCC
GND
SCL
SDA
NC
Description
Power Supply Voltage
Ground
Serial Clock Input
Serial Data Input/Output
No Connect
ISO Module Contact
C1
C5
C3
C7
C2, C4, C6, C8
Card Module Contact
VCC
NC
Rev. 1661A鈥?0/00
1
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