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Datasheet
AT24C256C-SSHL-T – EEPROM Memory IC | 256Kbit, I2C Interface, 1MHz | SOIC-8 Package
The AT24C256C-SSHL-T from Microchip Technology Inc. is a highly reliable 256Kbit (32Kx8) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for industrial, consumer, and automotive applications. Featuring an I2C-compatible 2-wire serial interface, it supports both 400kHz (Fast Mode) and 1MHz (Fast Mode Plus) clock frequencies, ensuring quick and efficient data transfers. Optimized for non-volatile memory storage, it combines low power consumption, high endurance, and long data retention, making it ideal for configuration storage, calibration data, and system parameter retention in embedded systems.
Key Features

Memory Organization: 32Kx8 bits (256Kbit total capacity)

Interface Type: I2C-compatible 2-wire serial interface

Clock Frequency: Supports 400kHz (Fast mode) and 1MHz (Fast mode plus)

Write Cycle Time: Self-timed erase and write cycles, 5ms maximum

Current Consumption:

Read: 1mA (typ), 2mA (max)

Write: 2mA (typ), 3mA (max)

Standby: 6A (max)

Supply Voltage Range: Wide operating range suitable for multiple system designs

Hardware Write Protection: Dedicated write-protect pin for full memory array protection

Endurance and Retention:

More than 1 million erase/write cycles per byte

Data retention > 100 years for long-term reliability

Temperature Grades:

Grade 1: 40 C to+125 C

Grade 2: 40 C to+105 C

Grade 3: 40 C to+ 85 C

Automotive Qualified: Fully compliant with AEC-Q100 automotive standards

Package Options: Available in SOIC-8, TSSOP-8, UDFN-8, and VFBGA-8

Environmental Compliance:

Pb-Free and RoHS Compliant

Factory Programming Available for custom data storage