UPD6121 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD6121

REMOTE CONTROL TRANSMISSION CMOS IC

NEC => Renesas Technology 

µPD6121, 6122

The higher 8 bits of the custom code are determined by the diode connected to the CCS pin and KI/O pin.

Set custom code

Higher 8 bits of custom code

10001010

C0 C1 C2 C3 C4 C5 C6 C7

Set to “1” by diode

The inversion/non-inversion of the lower 8 bits of the custom code’ is determined by the pull-up resistor

connected to the KI/O pin.

Set custom code

Lower 8 bits of custom code’

10001000

C0’ C1’ C2’ C3’ C4’ C5’ C6’ C7’

Set to “1” by pull-up resistor,

that is, bit for non-inversion of custom code is set

1: Non-inversion for C0 to C7

0: Inversion for C0 to C7

When the above-described setting is done, the following custom code is output.

Custom code

Higher 8 bits of custom code

10001010

C0 C1 C2 C3 C4 C5 C6 C7

Lower 8 bits of custom code’

11111101

C0’ C1’ C2’ C3’ C4’ C5’ C6’ C7’

C0 C1 C2 C3 C4 C5 C6 C7

Remark Codes are transmitted from the LSB.

7

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