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AMD Confidential
User Manual November 21
st
, 2008
Chapter 7: Device Configuration 107
7.19 AT24C Device
The AT24C device is a Serial EEPROM device. It can be configured to store 16, 32, or
64Kb of EEPROM. The device has an SMB 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 AT24C16A (16Kb), AT24C32A (32Kb),
or AT24C64A (64Kb), 2-Wire Bus serial EEPROM.
Figure 7-31: AT24C Device Configuration