M34551 View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M34551

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER

Renesas Electronics 

MITSUBISHI MICROCOMPUTERS

4551 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for

INFRARED REMOTE CONTROL TRANSMITTER

1/2 Duty, 1/2 Bias: When writing (XX10)2 to address M (1, 2, 8) in RAM.

M (1, 2, 8)

COM0 0 (bit 0)

COM1 1

COM1

1 frame (2/F)

1/F

X

X (bit 3)

SEG16

COM0

SEG16

COM1

SEG16

ON

COM0

SEG16

OFF

1/3 Duty, 1/3 Bias: When writing (X101)2 to address M (1, 2, 8) in RAM.

M (1, 2, 8)

COM0 1 (bit 0)

COM1 0

COM2 1

X (bit 3)

SEG16

COM2

COM1

1 frame (3/F)

1/F

COM0

SEG16

COM2

SEG16

ON

COM1

SEG16

OFF

COM0

SEG16

ON

1/4 Duty, 1/3 Bias: When writing (1010)2 to address M (1, 2, 8) in RAM.

M (1, 2, 8)

COM0 0 (bit 0)

COM1 1

COM2 0

COM3 1 (bit 3)

SEG16

COM3

COM2

1 frame (4/F)

1/F

COM1

COM0

F: LCD clock frequency

X: Set an arbitrary value.

(These bits are not

related to set the drive

waveform at each duty.)

SEG16

Fig. 27 LCD controller/driver structure

COM3

SEG16

ON

COM2

SEG16

OFF

COM1

SEG16

ON

COM0

SEG16

OFF

Voltage level

VLC3

VLC1=VLC2

VSS

VLC3

VLC1=VLC2

VSS

Voltage level

VLC3

VLC2

VLC1

VSS

VLC3

VLC2

VLC1

VSS

Voltage level

VLC3

VLC2

VLC1

VSS

VLC3

VLC2

VLC1

VSS

29

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