NEC PD78058F(A) Manuale Utente

CHAPTER 4 PIN FUNCTION (

PD78058FY SUBSERIES)

4.1 Pin Function List

4.1.1 Normal operating mode pins

(1) Port pins (1/3)

Pin Name

Input/Output

Function

After Reset Alternate Function

P00

Input

Port 0.

Input only

Input

INTP0/TI00

P01

Input/

8-bit input/output port.

Input/output mode can be specified

Input

INTP1/TI01

P02

output

bit-wise.

INTP2

P03

If used as an input port, an on-chip

INTP3

P04

pull-up resistor can be used by

INTP4

P05

software.

INTP5

P06

INTP6

P07

Note 1

Input

Input only

Input

XT1

P10 to P17

Input/

Port 1.

Input

ANI0 to ANI7

output

8-bit input/output port.

Input/output mode can be specified bit-wise.

If used as input port, an on-chip pull-up resistor can be used by

software

Note 2

P20

Input/

Port 2.

Input

SI1

P21

output

8-bit input/output port.

SO1

P22

Input/output mode can be specified bit-wise.

SCK1

P23

If used as an input port, an on-chip pull-up resistor can be used by

STB

P24

software.

BUSY

P25

SI0/SB0/SDA0

P26

SO0/SB1/SDA1

P27

SCK0/SCL

Notes

1. When the P07/XT1 pin is used as an input port, set the bit 6 (FRC) of the processor clock control register

(PCC) to 1 (do not use the feedback resistor internal to the subsystem clock oscillator).

2. When using pins P10/ANI0 to P17/ANI7 as analog input for the A/D converter, set port 1 to the input

mode. The on-chip pull-up resistor will be automatically disabled.