UPD61P24CS 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD61P24CS

4-BIT SINGLE-CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION

NEC => Renesas Technology 

µPD61P24

11.3 KI Pin (P12)

This is the 4-bit pin for key input. All of these pins are pulled down to the VSS level by PLA data.

Figure 11-2. KI Pin Organization

P2

KI3

KI2

KI1

KI0

11.4 KI Pull-Down Resistor Configuration

Pin

PLA KI pull-down

resistor switch

Pull-down

resistor

V SS

V DD

P-ch

N-ch

V SS

Input signal

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

10

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