PD6124A_15 datasheet(12/38 Pages) RENESAS

Part #	PD6124A

Description	4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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12 / 38 page

µPD6124A, 6600A

10

11.3

KI PIN (P12)

This is the 4-bit pin for key input. All of these pins can be pulled down to the VSS level by mask option.

Figure 11-2. KI Pin Organization

P12

KI3

KI2

KI1

KI0

P2

Mask option

11.4

KI PULL-DOWN RESISTOR CONFIGURATION

V DD

V SS

N-ch

V SS

Input signal

K pull-down

resistor switch

(Mask option)

Pull-down

resistor

I

P-ch

When the pull-down resistor switch is turned on (set 1) by the mask option, pull-down resistor R is turned on.

Caution

When using the pin as the key switch, turn on the pull-down resistor switch by the mask option.

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