The AT24C32C/64C is 32,768/65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits each. The device’s cascadable feature allows up to 8 devices to share a common 2- wire bus. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential.
The AT24C32C/AT24C64C are low‑voltage, 2‑wire serial EEPROMs offering 32 Kb or 64 Kb of memory organized as 4096 or 8192 bytes. They support up to eight devices on a common bus, feature write‑protect, page‑write mode, and a 5 ms self‑timed write cycle. The devices are available in several 8‑lead and ball‑grid array packages.
The document includes pin descriptions, memory organization, DC and AC electrical characteristics, timing diagrams, device addressing, and write operation procedures. It also lists revision history and Atmel contact information for technical support.
| Supply Voltage | 1.8 V to 3.6 V |
|---|---|
| Endurance | 1 Million write cycles |
| Data Retention | 100 years |
| Clock Frequency (SCL) | 400 kHz to 1 MHz |
The devices operate from 1.8 V up to 3.6 V supply voltage.
Up to eight AT24C32C/AT24C64C devices can share a common bus.
The EEPROM is rated for 1 million write cycles.