LSI

LS3321

4

5. LCD driver

The system has 32 LCD segment pad with 2-8 common pads (by mask option) providing

32x2,3,4,5,6,7,8 LCD segment output.

The LCD segment table is shown below :

COMMON

SEG [1:32]

1

78H:D[0:3], 79H:D[0:3], 7AH:D[0:3], 7BH:D[0:3], 7CH:D[0:3], 7DH:D[0:3], 7EH:D[0:3], 7FH:D[0:3]

2

70H:D[0:3], 71H:D[0:3], 72H:D[0:3], 73H:D[0:3], 74H:D[0:3], 75H:D[0:3], 76H:D[0:3], 77H:D[0:3]

3

68H:D[0:3], 69H:D[0:3], 6AH:D[0:3], 6BH:D[0:3], 6CH:D[0:3], 6DH:D[0:3], 6EH:D[0:3], 6FH:D[0:3]

4

60H:D[0:3], 61H:D[0:3], 62H:D[0:3], 63H:D[0:3], 64H:D[0:3], 65H:D[0:3], 66H:D[0:3], 67H:D[0:3]

5

58H:D[0:3], 59H:D[0:3], 5AH:D[0:3], 5BH:D[0:3], 5CH:D[0:3], 5DH:D[0:3], 5EH:D[0:3], 5FH:D[0:3]

OR (MASKING OPTION)

28H:D[0:3], 29H:D[0:3], 2AH:D[0:3], 2BH:D[0:3], 2CH:D[0:3], 2DH:D[0:3], 2EH:D[0:3], 2FH:D[0:3]

6

50H:D[0:3], 51H:D[0:3], 52H:D[0:3], 53H:D[0:3], 54H:D[0:3], 55H:D[0:3], 56H:D[0:3], 57H:D[0:3]

7

48H:D[0:3], 49H:D[0:3], 4AH:D[0:3], 4BH:D[0:3], 4CH:D[0:3], 4DH:D[0:3], 4EH:D[0:3], 4FH:D[0:3]

8

40H:D[0:3], 41H:D[0:3], 42H:D[0:3], 43H:D[0:3], 44H:D[0:3], 45H:D[0:3], 46H:D[0:3], 47H:D[0:3]

6. Mask option

Name

description

BZ2K/4K

buzzer frequency

BZ[0], BZ[1]

buzzer control

FSYSPRB

Power Up Control

INA address

description

0

Watch dog reset

3

ROMH

5

ROMHH/OSCON

4

OFF OSC

5

ON OSC

6

OFF LCD

7

ON LCD

Address

Description

DH(write)

D3

1=START

0=STOP

D2

1=XINP0

0=F1HZ

D1(tone)

1=FOSC

0=FOSC/2

D1(timer)

1=XINP0

0=F1HZ

D0

1=tone

0=buz