UPD78044F datasheet(45/472 Pages) NEC

45 / 472 page

Chapter 2

Pin Function (µPD780828A Subseries)

User’s Manual U16504EE1V1UD00

2.4 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 the

following table.

For the input/output circuit configuration of each type, see tTable 2-3, “Types of Pin Input/Output Cir-

cuits,” on page 45.

Table 2-3:

Types of Pin Input/Output Circuits (1/2)

Pin Name

Input/Output

Circuit Type

I/O

Recommended Connection for Unused Pins

P00/INTP0

8-A

I/O

Input: Connect to VDD or VSS via a resistor individually.

Output: Leave open.

P01/INT01

P02/INT02

P03/CCLK

P10/ANI0

Connect to VDD or VSS directly

P11/ANI1

P12/ANI2

P13/ANI3

P14/ANI4

P20/SM11

Leave open.

P21/SM12

P22/SM13

P23/SM14

P24/SM21

P25/SM22

P26/SM23

P27/SM24

P34/TI50/TO50/S27

17-B

I/O

Input: Connect to VDD or VSS via a resistor individually.

Output: Leave open.

P35/SCK30/S26

P36/SO30/S25

17-A

P37/SI30/S24

17-B

P40/S7

17-A

I/O

Input: Connect to VDD or VSS via a resistor individually.

Output: Leave open.

P41/S6

P42/S5

P43/S4

P44/S3

P45/S2

P46/S1

P47/S0

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