M34551E4FP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M34551E4FP

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

CONTROL REGISTERS (CONTINUED)

Carrier wave selection register C1

Carrier wave selection bits

at reset : 01112

at power down : 01112

W

C13 C12 C11 C10 Carrier wave frequency

0 0 0 0 STCK/24

1/3

0 0 0 1 STCK/24

1/2

0 0 1 0 STCK/16

1/4

0 0 1 1 STCK/16

1/2

0 1 0 0 STCK/2

1/2

0 1 0 1 No carrier wave

0 1 1 0 Not available

0 1 1 1 “L” fixed

1 0 0 0 STCK/12

1/3

1 0 0 1 STCK/12

1/2

1 0 1 0 STCK/8

1/4

1 0 1 1 STCK/8

1/2

1 1 0 0 STCK

1/2

1 1 0 1 No carrier wave

1 1 1 0 Not available

1 1 1 1 “L” fixed

Duty

Carrier wave output control register C2

at reset : 02

at power down : 02

W

C20 Carrier wave output auto-control bit

0 Auto-control output by timer 1 is invalid

1 Auto-control output by timer 1 is valid

Carrier wave generating control flag CR

at reset : 02

at power down : 02

W

CR Carrier wave generating control

Note: “W” represents write enabled.

0 Carrier wave generating stop (SPCR instruction)

1 Carrier wave generating start (STCR instruction)

60

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