SNL310

16-Bit LCD Controller

32COM X 128SEG

SEG

0……………15 16…………..31 ………………... 104………..119 120………..127

Bit0………….Bit15 Bit0………….Bit15

COM0

0x0F00

0x0F01

………………...

0x0F06

0x0F07

C0M1

0x0F08

0x0F09

………………...

0x0F0E

0x0F0F

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

:

COM31

0x0FF0

0x0FF1

………………...

0x0FF6

0x0FF7

COM32

0x0FF8

0x0FF9

………………...

0x0FFE

0x0FFF

:

:

10.5 LCD Interface Configuration

There are thee control registers (LCDC, COMN and SEGN) to configure hardware to

generate correct interface signal for LCD driver. The COMN and SEGN register are

used to specify how many common and segment number of LCD display. And the

LCDC register is the most important configuration register for this interface. For the

detail setting is showed as bellow:

LCD Configuration Register (LCDC)

LCDC initial value=0xxx xxx0 0000 0001

Bit

15

14 13 12 11 10 9

8

7

6

5

4

3

2

1

0

LCDC LCDEnb

-

-

-

-

-

-

GrayC Pre-Scalar

FRate

LCDEnb:

1-bit LCD interface enable control

0: disable

1: enable

GaryC:

Gray level control:

00: Blank/white

01: 2-level

10: 4-level

Pre-Scalar:

Define LCO1 clock rate

0x000: 16MHZ/4

0x001: 16MHZ/8

0x010: 16MHZ/16

0x011: 16MHZ/32

0x100: 16MHZ/64

0x101: 16MHZ/128

0X110: 16MHZ/256 0x111: 16MHZ/512

FRate:

0x0001: 256HZ (1/256 sec)

0x0010: 128HZ (2/256 sec)

0x0011: 85.3HZ (3/256 sec)

0x0100: 64HZ (4/256 sec)

:

:

0x1111: 17HZ (15/256 sec)

Ver: 1.7

May 2, 2003

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