78F9177Y View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

78F9177Y

UPD78F9177, D78F9177 / 8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD78F9177, 78F9177Y

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 is shown in Table 3-1.

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

Table 3-1. Type of I/O Circuit for Each Pin and Connection of Unused Pins

Pin Name

I/O Circuit Type I/O

Recommended Connection of Unused Pins

P00 to P05

P10, P11

P20/SCK20/ASCK20

5-H

I/O Input: Independently connects to VDD0, VDD1 or VSS0, VSS1

via a resistor.

Output: Leave open.

8-C

P21/SO20/TxD20

P22/SI20/RxD20

P23/SCL0Note1

P24/SDA0Note1

13-X

Input: Independently connects to VDD0 or VDD1 via a

resistor.

Output: Leave open.

P25/TI80/SS20

P26/TO80

8-C

Input: Independently connects to VDD0, VDD1 or VSS0, VSS1

via a resistor.

Output: Leave open.

P30/INTP0/TI81/CPT90

P31/INTP1/TO81

P32/INTP2/TO90

Input: Independently connects to VSS0 or VSS1 via a

resistor.

Output: Leave open.

P33/INTP3/TO82/BZO90

P50 to P53

13-T

Input: Independently connects to VDD0 or VDD1 via a

resistor.

Output: Leave open.

P60/ANI0 to P67/ANI7

9-C

Input Connect directly to VDD0, VDD1 or VSS0, VSS1.

XT1

−

Input Connect to VSS0 or VSS1.

XT2

−

Leave open.

RESET

2

Input

−

VPP

IC0 Note2

IC2 Note1

−

−

Connect directly to VSS0 or VSS1.

Leave open.

Notes 1. The IC2, SCL0, and SDA0 pins are available in µPD78F9177Y product only.

2. 48-pin plastic TQFP (fine pitch) only.

Data Sheet U14022EJ1V0DS00

13

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