NM24C16U/NM24C17U are 16K (16,384) bit serial interface CMOS EEPROMs (Electrically Erasable Programmable Read- Only Memory), fully conform to the Standard I2C™ 2-wire protocol, support Clock (SCL) and Data I/O (SDA) pins, and offer low voltage and low power options
The NM24C16U and NM24C17U are 16‑Kbit CMOS EEPROM devices that communicate over a standard I²C‑compatible two‑wire bus (SCL, SDA). They offer low‑voltage operation, low power consumption, and a write‑protect feature on the NM24C17U variant.
The document provides detailed specifications, pin‑out diagrams, timing diagrams, ordering information, and mechanical dimensions, along with a life‑support policy disclaimer.
| Memory size | 16 Kbit (16,384 bits) organized as 512 × 8 |
|---|---|
| Operating voltage | 2.7 V – 5.5 V |
| Clock frequency | 100 kHz or 400 kHz |
| Active current (typical) | 200 µA |
| Endurance | Up to 1,000,000 data changes |
| Data retention | > 40 years |
| Write cycle time (typical) | 6 ms |
| Write protect (NM24C17U) | Upper half of memory can be disabled by WP pin |
The devices operate from 2.7 V up to 5.5 V.
The EEPROM supports either 100 kHz or 400 kHz I²C clock frequencies.
When the WP pin is tied to Vss, the upper half of the memory is disabled for programming, effectively making it read‑only.