ST7070 데이터 시트보기 (PDF) - Sitronix Technology Co., Ltd.

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ST7070

Dot Matrix LCD Controller/Driver

Sitronix Technology Co., Ltd. 

ST7070

2-line display (N = 1) (Figure 4)

Display

Position

123456

00 01 02 03 04 05

DDRAM

Address 40 41 42 43 44 45

(hexadecimal)

………………..

………………..

38 39 40

25 26 27

65 66 67

Figure 4 2-Line Display

Case 1: When the number of display characters is less than 40 2 lines, the two lines are displayed from the

head. Note that the first line end address and the second line start address are not consecutive. For example,

when just the ST7070 is used, 16 characters 2 lines are displayed. See Figure 5.

When display shift operation is performed, the DDRAM address shifts. See Figure 5.

Display

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Position

DDRAM 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

Address

40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F

For

Shift

Left

01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10

41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50

For

Shift

Right

27 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E

67 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E

Figure 5 2-Line by 16-Character Display Example

Case 2: For a 16-character x 2-line display, See Figure 5.

When display shift operation is performed, the DDRAM address shifts. See Figure 5.

V1.4

10/51

2009/04/29

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