NAME

at24c — Atmel 24 series EEPROM driver

SYNOPSIS

/dev/eeprom/at24c/*/eeprom

DESCRIPTION

The at24c driver provides access to various Atmel or Atemel-compatible I2C based serial EEPROM devices. A character device, powered by eedev(4D), is created for each device and is found under /dev/eeprom/at24c. The devices all support arbitrary reads and writes, though writes are limited to the device's page size.

The following devices are supported:

• at24c01 -- 128 byte EEPROM
• at24c02 -- 256 byte EEPROM
• at24c08 -- 512 byte EEPROM
• at24c08 -- 1 KiB EEPROM
• at24c16 -- 2 KiB EEPROM
• at24c32 -- 4 KiB EEPROM
• at24c128 -- 8 KiB EEPROM
• at24c256 -- 16 KiB EEPROM
• at24c512 -- 32 KiB EEPROM
• at24c1024 -- 64 KiB EEPROM

Devices starting with the at24c32 and larger use a two byte addressing scheme, which leaves them incompatible with systems that only have an SMBus-compatible controller (e.g. pchsmbus(4D)).

FILES

/dev/eeprom/at24c/*/eeprom

EEPROM character device file.

/kernel/drv/amd64/at24c

Device driver (x86)

SEE ALSO

eedev(4D), i2cadm(8)