ST7066 데이터 시트보기 (PDF) - Unspecified

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ST7066

Dot Matrix LCD Controller/Driver

Unspecified 

ST7066

Character Code

(DDRAM Data)

CGRAM

Address

Character Patterns

(CGRAM Data)

b7 b6 b5 b4 b3 b3 b1 b0 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0

000

000

11111

000

001

00100

000

010

00100

0000 - 000000011 - - - 00100

000

100

00100

000

101

00100

000

110

00100

000

111

00000

001

000

11110

001

001

10001

001

010

10001

0000 - 001000011 - - - 11110

001

100

10100

001

101

10010

001

110

10001

001

111

00000

Table 5 Relationship between CGRAM Addresses, Character Codes (DDRAM) and Character patterns (CGRAM Data)

Notes:

1. Character code bits 0 to 2 correspond to CGRAM address bits 3 to 5 (3 bits: 8 types).

2. CGRAM address bits 0 to 2 designate the character pattern line position. The 8th line is the

cursor position and its display is formed by a logical OR with the cursor. Maintain the 8th line data, corresponding

to the cursor display position, at 0 as the cursor display. If the 8th line data is 1, 1 bits will light up the 8th line

regardless of the cursor presence.

3. Character pattern row positions correspond to CGRAM data bits 0 to 4 (bit 4 being at the left).

4. As shown Table 5, CGRAM character patterns are selected when character code bits 4 to 7 are

all 0. However, since character code bit 3 has no effect, the R display example above can be selected by either

character code 00H or 08H.

5. 1 for CGRAM data corresponds to display selection and 0 to non-selection.

“-“: Indicates no effect.

V1.2

12

2000/6/13

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