24LC256 Serial I2C Bus EEPROM Memory IC - DIP-8 Package is a 256 Kbit non-volatile I²C serial EEPROM memory IC organized as 32K × 8 bits. It provides reliable data storage that remains retained when power is removed and supports both random and sequential read operations. With a 64-byte page-write buffer, hardware write protection, and support for up to eight devices on the same I²C bus, it is suitable for storing configuration data, calibration values, device settings, identification data, and other persistent information in embedded systems.
| Parameter | Value |
|---|---|
| Product Type | I²C Serial EEPROM Memory IC |
| Model | 24LC256 |
| Brand | Microchip |
| Memory Capacity | 256 Kbit |
| Memory Organization | 32K × 8 |
| Interface | I²C / 2-Wire Serial |
| Maximum Clock Frequency | 400 kHz |
| Operating Voltage | 2.5 V to 5.5 V |
| Page Write Size | 64 Bytes |
| Maximum Write Cycle Time | 5 ms |
| Read Current | 400 µA Max. |
| Standby Current | 1 µA Max. |
| Endurance | 1,000,000 Erase/Write Cycles |
| Data Retention | 200 Years |
| Write Protection | Hardware Write Protect |
| Operating Temperature | -40°C to +85°C |
| Package | DIP-8 / PDIP-8 |
| Mounting Type | Through Hole |

| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | A0 | Hardware Address Input |
| 2 | A1 | Hardware Address Input |
| 3 | A2 | Hardware Address Input |
| 4 | VSS | Ground |
| 5 | SDA | I²C Serial Data Input/Output |
| 6 | SCL | I²C Serial Clock Input |
| 7 | WP | Write-Protect Input |
| 8 | VCC | Supply Voltage |
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1 × 24LC256 Serial I2C Bus EEPROM Memory IC - DIP-8 Package
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