24LCxx / AT24Cxx I2C EEPROM Family (56 parts in our catalog)
Microchip 24LC256, 24LC512, AT24C32, AT24C64 I2C serial EEPROM. The standard small-footprint nonvolatile data store for configuration, calibration, and identifiers.
Sub-families
| Sub-family | Variants | Core | Max Speed | Memory | Features |
|---|---|---|---|---|---|
| MAINSTREAM | |||||
| 24LC02B | 3 | 2-Kbit I2C EEPROM | 400 kHz | 256 Bytes | LP LV AUTO |
| 24LC32A | 2 | EEPROM | 400 kHz | 4KB (32Kb) | LP LV AUTO |
| 24LC16B | 3 | I2C Serial EEPROM | 400 kHz | 16 Kbit | LP LV AUTO |
| AT24C64D | 3 | I2C Serial EEPROM | 1 MHz | 64 Kbit | LP LV HS |
| AT24C256C | 2 | I2C Serial EEPROM | 1 MHz | 256 Kbit | LP LV HS |
| AT24C256 | 1 | CMOS I2C EEPROM | 1 MHz | 32 KB | LP LV HS |
| GENERAL PURPOSE | |||||
| AT24C08D | 1 | I2C Serial EEPROM | 1 MHz | 1 KB | LP LV HS |
| AT24C08C | 2 | I2C Serial EEPROM | 1 MHz | 8-Kbit | LP LV HS |
| AT24C16D | 1 | 2-wire serial EEPROM | 1 MHz | 16 Kbit | LP LV HS |
| 24LC256 | 4 | EEPROM Serial I2C | 1 MHz | 256 Kbit | LP LV AUTO |
| AT24C02D | 6 | I2C Serial EEPROM | 1 MHz | 2 Kbit | LP LV HS |
| 24LC08B | 2 | I2C Serial EEPROM | 400 kHz | 1KB (8-Kbit) | LP LV AUTO |
| AT24C02C | 2 | CMOS Serial EEPROM | 1 MHz | 2 Kbit | LP LV HS |
| 24LC64T | 1 | I2C Serial EEPROM | 400 kHz | 64 Kbit | LP LV HS |
| AT24C04C | 2 | I2C Serial EEPROM | 1 MHz | 4 Kbit | LP LV HS AUTO |
| AT24C32D | 2 | I2C Serial EEPROM | 1 MHz | 32 Kbit | LP LV HS |
| 24LC32AT | 1 | I2C Serial EEPROM | 400 kHz | 32 Kbit | LP LV AUTO |
| 24LC04B | 3 | I2C Serial EEPROM | 400 kHz | 512 Bytes | LP LV AUTO |
| AT24C16C | 2 | 2-wire serial EEPROM | 1 MHz | 16 Kbit | LP LV HS |
| 24LC512 | 2 | CMOS Serial EEPROM | 400 kHz | 64KB | LP LV HS |
| AT24C02B | 1 | 2-wire serial EEPROM | 400 kHz | 256B | LP LV |
| AT24C16B | 1 | 2-wire I2C Serial EEPROM | 1 MHz | 16-Kbit | LP LV HS |
| 24LC64B | 2 | I2C Serial EEPROM | 400 kHz | 8KB (64Kb) | LP LV AUTO |
| AT24C16A | 1 | CMOS 2-wire EEPROM | 400 kHz | 16 Kbit | LP LV SEC |
| LOW VOLTAGE GENERAL PURPOSE | |||||
| AT24C04D | 2 | I2C Serial EEPROM | 1 MHz | 4 Kbit | LP LV HS |
| AT24C32E | 1 | I2C Serial EEPROM | 1 MHz | 32 Kbit | LV LP HS |
| HIGH DENSITY SERIAL | |||||
| 24LC1025 | 1 | I2C CMOS EEPROM | 400 kHz | 1 Mbit | LP LV HS |
| MAINSTREAM NON VOLATILE | |||||
| 24LC64 | 2 | I2C Serial EEPROM | 400 kHz | 8KB (64Kb) | LP LV AUTO |
Popular Variants
Top variants from across the family, with specs that differentiate them.
| Part Number | Sub-family | Memory | Package | Access Time | Clock Frequency | Voltage | Memory Organization | Stock |
|---|---|---|---|---|---|---|---|---|
| AT24C04D-SSHM-T | AT24C04D | 4K | SOIC-8 | 450 ns | 1 M | 1.7V | 512 x 8 | 22,168 |
| 24LC02B | 24LC02B | 2K | SOIC-8 | 900 ns | 400 k | 2.5V | 256 x 8 | 10,649 |
| 24LC256 | 24LC256 | 256K | SOIC-8 | 900 ns | 400 k | 2.5V | 32K | 10,248 |
| 24LC32A-I/P | 24LC32A | 32K | DIP-8 | 900 ns | 400 k | 2.5V | 4K | 14,887 |
| AT24C02D-SSHM-T | AT24C02D | 2K | SOIC-8 | 450 ns | 1 M | 1.7V | 256 x 8 | 19,933 |
| AT24C08D-SSHM-T | AT24C08D | 8K | SOIC-8 | 4.5 u | 1 M | 1.7V | 1K | 12,930 |
| 24LC16B-I/P | 24LC16B | 16K | DIP-8 | 900 ns | 400 k | 2.5V | 2K | 4,973 |
| 24LC256-I/P | 24LC256 | 256K | DIP-8 | 900 ns | 400 k | 2.5V | 32K | 9,125 |
| AT24C08C | AT24C08C | 8K | SOIC-8 | 550 ns | 1 M | 1.7V | 1K | 7,870 |
| AT24C08C-SSHM-T | AT24C08C | 8K | SOIC-8 | 550 ns | 1 M | 1.7V | 1K | 8,195 |
| 24LC08B | 24LC08B | 8K | SC-74A, SOT-753 | 900 ns | 400 k | 2.5V | 256 x 8 x 4 | 6,455 |
| AT24C16D-SSHM-T | AT24C16D | 16K | SOIC-8 | 450 ns | 1 M | 1.7V | 2K | 4,452 |
