The FM24C04U/05U 4K-Bit Standard 2-Wire Bus Interface Serial EEPROM is a product of Fairchild Semiconductor International. This product conforms to the standard IIC 2-wire protocol and has 4096 bits of CMOS non-volatile electrically erasable memory.
The FM24C04U/05U devices are 4‑Kbit CMOS non‑volatile EEPROMs that conform to the Standard I²C 2‑wire protocol. They are offered in 8‑pin DIP, SO, and TSSOP packages and support write‑protect for the upper half of the memory in the FM24C05U version.
Key features include a wide operating voltage range of 2.7 V‑5.5 V, 400 kHz clock capability, low standby current (10 pA typical), 1 Mcycle endurance, and data retention of over 40 years. Temperature grades are available for commercial, extended, and automotive applications.
| Operating Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Maximum Clock Frequency | 400 kHz (at 2.7 V‑5.5 V) |
| Standby Current (typical) | 10 pA |
| Endurance | 1,000,000 data changes |
| Data Retention | greater than 40 years |
| Package Types | 8‑pin DIP, 8‑pin SO, 8‑pin TSSOP |
| Commercial Temperature Range | 0 °C to +70 °C |
The standard I²C protocol supports up to 16 Kbits of EEPROM memory, which Fairchild provides in 2 K, 4 K, 8 K, and 16 K devices.
Three temperature ranges are offered: Commercial (0 °C to +70 °C), Extended (‑40 °C to +85 °C), and Automotive (‑40 °C to +125 °C).