Reference Guide

01/2020
How is this memory write
protected?
Hardware and software write protected
HDMI EDID EEPROM
ST M24C02
Size
2Kbit
Type [e.g. Flash PROM,
EEPROM]
EEPROM
Volatility
Non-volatile
Can user programs or
operating system write data to
it during normal operation?
No
Purpose Storage of HDMI EDID
How is data input to this
memory?
HDMI EDID is embedded in the firmware, and copied
to EEPROM after F/W programming.
(or via customized EDID tool)
How is this memory write
protected?
Hardware and software write protected
System Flash ROM
ISSI PM25LQ040B-SCE
Size
4Mbit
Type [e.g. Flash PROM,
EEPROM]
Serial flash memory
Volatility
Non-volatile
Can user programs or
operating system write data to
it during normal operation?
No
Purpose
To store firmware
How is data input to this
memory?
Loading flash memory requires a vendor-provided
tool and firmware
How is this memory write
protected?
Software write protected
CAUTION: All other components on the system board lose data if power is removed from the system.
Primary power loss (unplugging the power cord) destroys all user data
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