Product Overview
The CAT24C512WI-GT3 from onsemi is a 512-Kbit (64KB) serial I2C EEPROM in an 8-pin SOIC package. Organized as 65,536 x 8 bits, it features a 128-byte page write buffer, supports Standard (100kHz), Fast (400kHz), and Fast-Plus (1MHz) I2C modes, and operates from 1.8V to 5.5V. With on-chip ECC for enhanced reliability, 1,000,000 program/erase cycles, 100-year data retention, hardware write protection, and Schmitt trigger inputs for noise immunity, it is designed for high-reliability non-volatile storage applications.
Key Specifications
| Memory Size | 512 Kbit (64 KB) |
| Organization | 65,536 x 8 bits |
| Interface | I2C (Standard / Fast / Fast-Plus) |
| Max Clock Frequency | 1 MHz (Fast-Plus mode) |
| Page Size | 128 bytes |
| Page Write Buffer | 128 bytes |
| Write Cycle Time | 5 ms (max) |
| Supply Voltage | 1.8V to 5.5V |
| Active Current (max) | 2.5 mA |
| Standby Current (max) | 2 µA |
| Program/Erase Endurance | 1,000,000 cycles |
| Data Retention | 100 years |
| Hardware Write Protection | Yes (WP pin, protects entire memory) |
| On-Chip ECC | Yes (Error Correction Code) |
| Device Addresses | Up to 8 devices on same bus (A0-A2 pins) |
| Operating Temperature | -40°C to +85°C |
| Package | SOIC-8 (4.9 x 3.9 mm) |
Features
- 512-Kbit serial EEPROM organized as 65,536 x 8
- I2C interface: Standard (100kHz), Fast (400kHz), Fast-Plus (1MHz)
- 128-byte page write buffer for efficient writes
- On-chip ECC for enhanced data reliability
- Hardware write protection via WP pin (entire memory)
- Schmitt trigger and noise suppression on SCL/SDA inputs
- 1,000,000 program/erase cycle endurance
- 100-year data retention
- Up to 8 devices on same I2C bus (A0-A2 address pins)
- 1.8V to 5.5V wide operating voltage range
Applications
- Smart home and IoT device configuration storage
- Industrial control parameter and calibration data
- Medical device patient settings and history
- Automotive electronics data logging
- Consumer electronics user preference storage
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