This datasheet provides detailed information on the X25040 product, including 1MHz clock rate, SPI modes, 512 x 8 bits, 4 byte page mode, low power CMOS, 150µA standby current, 3mA active current, 2.7V to 5.5V power supply, block lock protection, built-in inadvertent write protection, power-up/down protection circuitry, write latch, write protect pin, self-timed write cycle, 5ms write cycle time (typical), high reliability, endurance: 100,000 cycles/byte, data retention: 100 years, ESD protection: 2000V on all pins, 8-lead PDlP package, 8-lead SOIC package.
This document describes the ICmic X25040 serial EEPROM, a 4096‑bit (512 × 8) CMOS device with SPI interface. It includes features such as Block Lock protection, Hold and Write‑Protect inputs, and high‑reliability specifications.
The handbook covers pin definitions, timing diagrams, read/write sequences, electrical characteristics, absolute maximum ratings, recommended operating conditions, packaging dimensions, and ordering information.
| Supply voltage | 2.7 V to 5.5 V |
|---|---|
| Standby current | 150 µA |
| Active current | 3 mA |
| Typical write cycle time | 5 ms |
| Endurance | 100 000 cycles per byte |
| Data retention | 100 years |
| ESD protection | 2000 V on all pins |
| Operating temperature (bias) | -65 °C to +135 °C |
The device operates from 2.7 V up to 5.5 V.
A typical write cycle takes about 5 ms.