D78F9189CT 查看數據表（PDF） - NEC => Renesas Technology

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D78F9189CT

UPD78F9189CT, D78F9189CT / 8-Bit Single-chip Microcontroller

NEC => Renesas Technology 

CHAPTER 2 PIN FUNCTIONS

2.3 Pin Input/Output Circuits and Recommended Connection of Unused Pins

The input/output circuit type of each pin and recommended connection of unused pins are shown in Table 2-1.

For the input/output circuit configuration of each type, refer to Figure 2-1.

Table 2-1. Types of Input/Output Circuits for Each Pin and Recommended Connection of Unused Pins

Pin Name

P00 to P04

P10, P11

P20/SCK20/ASCK20

P21/SO20/TxD20

P22/SI20/RxD20

P23

P24

P25/TI80/SS20

P26/TO80

I/O Circuit Type

5-H

8-C

13-X

8-C

P30/INTP0/TI81/CPT90

P31/INTP1/TO81

P32/INTP2/TO90

P33/INTP3/TO82/BZO90

P50 to P53 (mask ROM version)

P50 to P53 (flash memory version)

P60/ANI0 to P63/ANI3

RESET

IC0 (mask ROM version)

VPP (flash memory version)

13-U

13-T

9-C

2

−

I/O

I/O

Input

Input

−

Recommended Connection of Unused Pins

Input: Independently connect to VDD or VSS via a resistor.

Output: Leave open.

Input: Independently connect to VDD via a resistor.

Output: Leave open.

Input: Independently connect to VDD or VSS

via a resistor.

Output: Leave open.

Input: Independently connect to VSS via a resistor.

Output: Leave open.

Input: Independently connect to VDD via a resistor.

Output: Leave open.

Connect directly to VDD or VSS.

−

Connect directly to VSS.

Connect directly to VSS.

28

User’s Manual 2nd edition

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