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Renesas Electronics America - Knowledgebase

What is the meaning of the VRAM "Command Continuous Input Enable Time?"

Latest Updated:08/01/2007


A VRAM write command is shown in the item "Command Continuous Input Enable Time" of the OSD data sheet, but such a command is not shown on the command list. What is this command?


The VRAM write command is a general term for commands that write data to VRAM (video RAM) and includes two commands: a video RAM batch clear command and a display character control command. Since a dot clock is used when the data is written to the VRAM, the time required for successively transferring these commands is specified in terms of time of this dot clock. Especially note this specification, because the display character control command is a 2-byte continuous command.

FAQ for reference:2-byte continuous command transfer
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bipolar comparators