AMD Confidential
User Manual November 21st, 2008
Chapter 7: Device Configuration 107
7.19 AT24C Device
The AT24C device is a Serial EEPROM device. It can be con figured to store 16, 32, or
64Kb of EEPROM. The device has an S MB bus interface for access to its internal
registers. It is typically used to store platform specific configuration data.
Interface
The AT24C device has a SMB interface. For example, this device can be connected to a
PCA9548 or PCA9556 device (see Section 7.8, "PCA9548 SMB Device", on page 84 or
Section 7.9, "PCA9556 SMB Device", on page 85).
Contents of a BSD
The current state of all internal registers and any internal state variables are saved in the
BSD.
Configuration Options
The AT24C device can be configure to store an A T24C16A (16Kb), AT24C32A (32Kb),
or AT24C64A (64Kb), 2-Wire Bus serial EEPROM.
Figure 7-31: AT24C Device Configuration