UPD784031YGC-8BT Ver la hoja de datos (PDF) - NEC => Renesas Technology

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UPD784031YGC-8BT

16-/8-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD784031Y

5.3 Types of Pin I/O Circuits and Connections for Unused Pins

Table 5-1 shows types of pin I/O circuits and the connections for unused pins.

For the input/output circuit of each type, refer to Figure 5-1.

Table 5-1. Types of Pin I/O Circuits and Connections for Unused Pins (1/2)

Pin Name

I/O Circuit Type

I/O

Recommended Connection for Unused Pins

P00 to P07

5-H

I/O

Input: Connect to VDD0.

P10/PWM0

P11/PWM1

Output: Open

P12/ASCK2/SCK2

8-C

P13/RxD2/SI2

5-H

P14/TxD2/SO2

P15 to P17

P20/NMI

2

Input

Connect to VDD0 or VSS0.

P21/INTP0

P22/INTP1

2-C

Connect to VDD0.

P23/INTP2/CI

P24/INTP3

P25/INTP4/ASCK/SCK1 8-C

I/O

Input: Connect to VDD0.

Output: Open

P26/INTP5

2-C

Input

Connect to VDD0.

P27/SI0

P30/RxD/SI1

5-H

I/O

Input: Connect to VDD0.

P31/TxD/SO1

Output: Open

P32/SCK0/SCL

10-B

P33/SO0/SDA

P34/TO0 to P37/TO3

5-H

AD0 to AD7

A8 to A15

OutputNote Open

P60/A16 to P63/A19

RD

WR

P66/WAIT/HLDRQ

I/O

Input: Connect to VDD0.

P67/REFRQ/HLDAK

Output: Open

P70/ANI0 to P77/ANI7 20-A

Input: Connect to VDD0 or VSS0.

Output: Open

ANO0, ANO1

12

Output

Open

ASTB

4-B

Note I/O circuit type of these pins is 5-H. However these pins perform only as output by an internal circuit.

14

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