EM73880 datasheet(25/40 Pages) EMC

tên linh kiện	EM73880

Giải thích chi tiết về linh kiện	4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

PDF	40 Pages

Scroll/Zoom	100%

nhà sản xuất	EMC [ELAN Microelectronics Corp]

Trang chủ	http://www.emc.com.tw

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25 / 40 page

* This specification are subject to be changed without notice.

EM73880

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

11.30.2001

Preliminary

RAM

COM3

COM2

COM1

COM0

address

bit3

bit2

bit1

bit0

SEG0

20H

SEG1

21H

SEG2

22H

SEG30

3EH

SEG31

3FH

The relation between LCD display data and driving method

Driving method

bit3

bit2

bit1

bit0

1/4 duty

COM3

COM2

COM1

COM0

1/3 duty

COM2

COM1

COM0

1/2 duty

COM1

COM0

Static

COM0

LCD frame frequency : According to the drive method to set the frame frequency.

Duty

Frame frequency (Hz)

1/4 duty

64 x (4/4) = 64

1/3 duty

64 x (4/3) = 85

1/2 duty

64 x (4/2) = 128

Static

PROGRAM EXAMPLE :

LDIA

#0001B

; 1/4 duty, 1/2 bias

OUTA

P27

LDIA

#1001B

; enable LCD

OUTA

P27

The LCD display data is stored in the display data area of the data memory (RAM).

The display data area begins with address 20H during reset. The LCD display data area ia as below :

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