UPD17062 datasheet(262/298 Pages) RENESAS

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µPD17062

(4) Vertical position data (b6 to b3 of the control data)

The vertical position data specifies which of the 12 rows (vertical positions) shown in Fig. 20-10 the display

is to begin at. The vertical position data consists of four bits of the control data, with b6 corresponding

to the MSB and b3 corresponding to the LSB, and it takes a value from 0H to DH. Value 0H corresponds

to row 0, and value DH to column 13.

A character position at the beginning of the screen is specified with an absolute row number (row from

0 to 11 in Fig. 20-10). The number of rows left blank between two rows is specified by the vertical position

data. In other words, the position of the next character is specified by the number (in hexadecimal) of

blank rows after the current row.

In Fig. 20-10, for example, the vertical position data of A and that of B are 6H and 1H, respectively. Similarly,

the vertical position data of D is 0H.

Remark The term number of rows used in the above description applies when the vertical size data is 00

(standard size). If the vertical size data is changed, the rows are counted based on the new vertical

size data. If the vertical size data is a double size, for example, one screen has only six rows.

Fig. 20-10

Display Positions

01234

Row 0

Row 1

Row 2

Row 3

Row 4

Row 5

Row 6

Row 7

Row 8

Row 9

Row 10

Row 11

Row 12

Row 13

Column

UPD17062 Datasheet(PDF) 262 Page - Renesas Technology Corp