Samsung S3C9228/P9228, 8-Bit CMOS Microcontroller user manual Lpot LCD Port Control Register

CONTROL REGISTERSS3C9228/P9228

LPOT — LCD Port Control Register

D8H

Bit Identifier

.7

.6

.5

.4

.3

.2

.1

.0

RESET Value

–

0

0

0

0

0

0

0

Read/Write

–

R/W

R/W

R/W

R/W

R/W

R/W

R/W

.7

Not used for S3C9228/P9228

.6-.4

SEG4-SEG19 and COM0-COM3 Selection Bit

SEG4-7

SEG8-11

SEG12-15

SEG16-19/

COM0-3

COM7-COM4

P4.0-P4.3

P4.4-P4.7

P5.0-P5.3

P5.4-P5.7

P6.0-P6.3

0

0

0

SEG

SEG

SEG

SEG/COM

COM

0

0

1

Port

SEG

SEG

SEG/COM

COM

0

1

0

Port

Port

SEG

SEG/COM

COM

0

1

1

Port

Port

Port

SEG/COM

COM

1

0

0

Port

Port

Port

Port

COM

1

0

1

Port

Port

Port

Port

Port

.3

SEG3/P3.0

Selection Bit

0SEG port

1Normal I/O port

.2 SEG2/P3.1 Selection Bit

0SEG port

1Normal I/O port

.1 SEG1/P2.0 Selection Bit

0SEG port

1Normal I/O port

.0 SEG0/P2.1 Selection Bit

0SEG port

1Normal I/O port

NOTE: SEG16-SEG19 are shared with COM4-COM7.

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