UPD6462GS datasheet(28/60 Pages) NEC

28 / 60 page

µPD6461, 6462

3.6 CHARACTER DISPLAY POSITION CONTROL COMMAND

This command specifies the character display start position with one of 32 steps in 12-dot units for the horizontal direction,

and one of 32 steps in three-line units for the vertical direction (this command is a 2-byte command, requiring 16 bits for

each command even when continuously input).

(1) For MSB-first transfer (Command bits are input starting from the MSB (D15).)

D15

D14

D13

D12

D11

D10

(MSB)

(LSB)

Control bits for horizontal display start position

Start position

(4 + 12

× 1)/fOSC (MHz) from rising

edge of Hsync ( s)

(4 + 12

× 2)/fOSC (MHz) from rising

edge of Hsync ( s)

(4 + 12

× 32 )/fOSC (MHz) from rising

edge of Hsync ( s)

Remarks fOSC: LC oscillation frequency or external input clock

Control bits for vertical display start position

Start position

× 0 + 1H (9H × 0 + 1H) from

rising edge of Vsync

× 1 + 1H (9H × 1 + 1H) from

rising edge of Vsync

× 31 + 1H (9H × 31 + 1H) from

rising edge of Vsync

Remarks 1. H: Line

2. (

) shows when units of nine lines are selected by

specifying a mask option.

(2) For LSB-first transfer (Command bits are input starting from the LSB (D0). The function of each bit is the same as

that for MSB-first transfer.)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

000001

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