UPD6466GS datasheet(34/70 Pages) NEC

34 / 70 page

µPD6466

3.9 Character Display Position Control Command

This command can be used to set the character display start position in 32 steps in units of 3 dots in the horizontal

direction, and in 32 steps in units of 3 rows in the vertical direction (because this command is a 2-byte command, input

of 16 bits is necessary when this command is input more than once successively).

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

100000

(MSB)

(LSB)

Horizontal display start position control bit

Function

Time from rising of Hsync ( s)

(22+3

×0)/fOSC (MHz)

Time from rising of Hsync ( s)

(22+3

×1)/fOSC (MHz)

Time from rising of Hsync ( s)

(22+3

×31)/fOSC (MHz)

Remark fOSC: LC oscillation frequency or external input clock frequency

Vertical display start position control bit

Function

×0+2H (9H×0+2H) from rising of

Vsync

×1+2H (9H×1+2H) from rising of

Vsync

×31+2H from rising of Vsync

Remarks 1. H: row

2. ( ): If 9H unit is selected by the initial status setting

command.

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

000001

UPD6466GS Datasheet(PDF) 34 Page - NEC

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