UPD17062 datasheet(267/298 Pages) RENESAS

tên linh kiện	UPD17062

Giải thích chi tiết về linh kiện	MOS INTEGRATED CIRCUIT

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267 / 298 page

265

µPD17062

20.7.1

Horizontal Start Position Setting Register

If the horizontal start position setting register contains 0H, the horizontal start position is set 4.25

µs after

the trailing edge of the horizontal sync signal. Each time the horizontal start position setting register is

incremented by one, the horizontal start position shifts to the right by 250 ns; namely the following expression

applies.

Horizontal start position = 4.25

µs + 250 ns × (horizontal start position setting data)

In Fig. 20-13, position A corresponds to the horizontal position setting data 0H. When the horizontal position

setting data is changed to 1, the start position shifts to the right by 250 ns (one dot of the minimum-size

character), that is position B. (The solid lines indicate the screen when the horizontal position data is 0, and

the dotted lines, when the horizontal position data is 1.

Fig. 20-13

Horizontal Shifting

IDC image area

4.25

after trailing edge of horizontal synchronizing signal

UPD17062 bảng dữ liệu(PDF) 267 Page - Renesas Technology Corp