UPD75P3216 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD75P3216

4-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD75P3216

3.4 Recommended Connection of Unused Pins

Pin

Recommended Connection

P00/INT4

Connect to Vss or VDD

P01/SCK

Connect to Vss or VDD through a resistor individually

P02/SO/SB0

P03/SI/SB1

Connect to Vss

P10/INT0

Connect to Vss or VDD

P13/TI0

P20/PTO0

Input status : connect to Vss or VDD through a resistor individually

P21/PTO1

Output status: open

P22/PTO2/PCL

P23/BUZ

P30/MD0/LCDCL

P31/MD1/SYNC

P32/MD2

P33/MD3

P50/D4 to P53/D7

Connect to Vss

P60/KR0/D0 to P63/KR3/D3 Input status : connect to Vss or VDD through a resistor individually

Output status: open

S12 to S15

Open

COM0 to COM3

S16/P93 to S19/P90

S20/P83 to S23/P80

Input status : connect to Vss or VDD through a resistor individually

Output status: open

VLC0 to VLC2

Connect to Vss

BIAS

Connect to Vss only when VLC0 to VLC2 are all not used.

In other cases, leave open.

VPP

Be sure to connect VDD directly.

10

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