AT24C128SC_14 Datasheet, PDF (1/13 Pages) ATMEL Corporation – Schmitt Trigger, Filtered Inputs for Noise Suppression

Features
• Low-voltage and Standard-voltage Operation, 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
– Endurance: 1 Million Write Cycles
– Data Retention: 40 Years
– ESD Protection: > 4000V
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 sev-
eral standard ISO 7816 smart card modules (see Ordering Information). All devices
are functionally equivalent to Atmel Serial EEPROM products offered in standard IC
packages (PDIP, SOIC, TSSOP, dBGA), with the exception of the slave address and
Write Protect functions which are not required for smart card applications.
Table 1. Pin Configurations
Pad Name
Description
ISO Module Contact
VCC
Power Supply Voltage
C1
GND
Ground
C5
SCL
Serial Clock Input
C3
SDA
Serial Data Input/Output
C7
NC
No Connect
C2, C4, C6, C8
Figure 1. Card Module Contact
VCC
NC
Two-wire Serial
EEPROM Smart
Card Modules
128K (16,384 x 8)
256 (32,768 x 8)
AT24C128SC
AT24C256SC
1661B–SEEPR–04/04
1