UPD78F0034BYGK-9ET View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD78F0034BYGK-9ET

8-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD78F0034B, 78F0034BY, 78F0034B(A), 78F0034BY(A)

3.3 Pin I/O 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 3-1.

For the input/output configuration of each type, refer to Figure 3-1 .

Table 3-1. Types of Pin I/O Circuits (1/2)

Pin Name

P00/INTP0

P01/INTP1

P02/INTP2

P03/INTP3/ADTRG

P10/ANI0 to P17/ANI7

P20/SI30

P21/SO30

P22/SCK30

P23/RxD0

P24/TxD0

P25/ASCK0

P30, P31

P32/SDA0Note 1

P33/SCL0Note 1

P34/SI31Note 2

P35/SO31Note 2

P36/SCK31Note 2

P40/AD0 to P47/AD7

P50/A8 to P57/A15

P64/RD

P65/WR

P66/WAIT

P67/ASTB

P70/TI00/TO0

P71/TI01

P72/TI50/TO50

P73/TI51/TO51

P74/PCL

P75/BUZ

I/O Circuit Type

8-C

25

8-C

5-H

8-C

5-H

8-C

13-P

13-R

8-C

5-H

8-C

5-H

5-H

8-C

5-H

I/O

Recommended Connection of Unused Pins

I/O

Input: Independently connect to VSS0 or VSS1 via a

via a resistor.

Output: Leave open.

Input

I/O

Directly connect to VDD0, VDD1, VSS0, or VSS1.

Input: Independently connect to VDD0, VDD1, VSS0, or

VSS1 via a resistor.

Output: Leave open.

Input: Directly connect to VSS0 or VSS1.

Output: Leave open at low-level output.

Input: Independently connect to VDD0, VDD1, VSS0 or

VSS1 via a resistor.

Output: Leave open.

Input: Independently connect to VDD0 or VDD1 via a

resistor.

Output: Leave open.

Input: Independently connect to VDD0, VDD1, VSS0, or

VSS1 via a resistor.

Output: Leave open.

Notes 1. SDA0 and SCL0 are incorporated only in the µPD78F0034BY and 78F0034BY(A).

2. SI31, SO31, and SCK31 are incorporated only in the µPD78F0034B and 78F0034B(A).

16

Data Sheet U16369EJ1V0DS

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