Microchip Technology Inc. 24C01A/02A/04A is a 1K/2K/4K bit Electrically Erasable PROM. The device features low power CMOS technology, hardware write protect, and a two wire serial interface bus compatible with I2C. It operates at 5.0V only and has a self-timed write cycle with auto-erase. The device has a page-write buffer, 1ms write cycle time for single byte, and guarantees 1,000,000 Erase/Write cycles. It has a data retention of over 200 years and is available in 8-pin DIP/SOIC packages. The device is suitable for extended temperature ranges.
The 24C01A/02A/04A family are low‑power CMOS 1 Kb, 2 Kb, and 4 Kb serial EEPROMs that operate from a single 5 V supply. They use a standard two‑wire I²C‑compatible interface and offer fast 1 ms byte‑write cycles, page‑write buffers, and up to 1 million erase/write cycles with data retention exceeding 200 years.
The device supports bidirectional bus operation, up to eight 24C01A/02A or four 24C04A devices on a single bus, and includes hardware write‑protect for the upper half of the memory on the 24C02A/04A. Detailed electrical, AC, and pin specifications are provided for commercial, industrial, and automotive temperature grades.
| Memory size | 1 Kb / 2 Kb / 4 Kb |
|---|---|
| Operating voltage | 5.0 V only |
| Write endurance | 1,000,000 erase/write cycles |
| Data retention | >200 years |
| Write cycle time (single byte) | 1 ms |
| Maximum clock frequency | 100 kHz |
| Temperature range – Commercial | 0 °C to +70 °C |
| Temperature range – Industrial | -40 °C to +85 °C |
| Temperature range – Automotive | -40 °C to +125 °C |
The device guarantees 1,000,000 erase/write cycles.
Commercial grade operates from 0 °C to +70 °C, industrial from -40 °C to +85 °C, and automotive from -40 °C to +125 °C.