
Microchip Technology AT24CS01/02/04/08 I2C Compatible Serial EEPROMs
Microchip AT24CS01/02/04/08 I2C Compatible Serial EEPROMs provide 1024/2048/4096/8192 bits of Serial Electrically Erasable and Programmable Read-only Memory (EEPROM) organized as 128/256/512/1024 words of eight bits each. The device is optimized for industrial and commercial applications where low-power and low-voltage operations are essential. The AT24CS01/02/04/08 provides the additional feature of a factory-programmed, guaranteed unique 128-bit serial number while maintaining all the traditional features available in the 1-Kbit/2-Kbit/4-Kbit/8-Kbit Serial EEPROM. The time-consuming step of performing and ensuring true serialization of products on a manufacturing line can be removed from the production flow by employing the CS Series Serial EEPROM. The 128-bit serial number is programmed and permanently locked from future writing during Microchip production. Further, this 128-bit location does not consume any of the read/write area of the 1-Kbit/2-Kbit/4-Kbit/8-Kbit Serial EEPROM.Features
- Low-voltage operation
- VCC = 1.7V to 5.5V
- Internally organized as 128 x 8 (1-Kbit) or 256 x 8 (2-Kbit)
- I2C-compatible (2-wire) serial interface
- Schmitt Trigger, filtered inputs for noise suppression
- Bidirectional data transfer protocol
- 400kHz (1.7V) and 1MHz (2.5V, 5.0V) compatibility
- Write Protect pin for hardware data protection
- 8-byte page write mode
- Partial page writes allowed
- Self-timed write cycle (5ms max)
- High-reliability
- 1,000,000 write cycles
- 100 years of data retention
- Green package options (Pb/Halide-free/RoHS-compliant)
- 8-lead JEDEC SOIC, 8-lead TSSOP, 8-pad UDFN, and 5-lead SOT23
Block Diagram

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Published: 2019-09-12
| Updated: 2023-06-06