UPD78P058F datasheet(14/78 Pages) RENESAS

14 / 78 page

µPD78P058F

PIN FUNCTIONS

2.1

Pins in Normal Operating Mode

(1) Port pins (1/2)

Pin Name

Input/Output

Function

After Reset

Alternate Function

P00

Input

Port 0

Input only

Input

INTP0/TI00

8-bit input/output

P01

Input/output

port

Input/output is specifiable

Input

INTP1/TI01

bit-wise. When used as the

P02

input port, it is possible to

INTP2

use an on-chip pull-up

P03

resistor by software.

INTP3

P04

INTP4

P05

INTP5

P06

INTP6

P07Note 1

Input

Input only

Input

XT1

P10 to P17

Input/output

Port 1

Input

ANI0 to ANI7

8-bit input/output port

Input/output is specifiable bit-wise.

When used as the input port, it is possible to

use an on-chip pull-up resistor by software.Note 2

P20

Input/output

Port 2

Input

SI1

8-bit input/output port

P21

Input/output is specifiable bit-wise.

SO1

When used as the input port, it is possible to

P22

use an on-chip pull-up resistor by software.

SCK1

P23

STB

P24

BUSY

P25

SI0/SB0

P26

SO0/SB1

P27

SCK0

P30

Input/output

Port 3

Input

TO0

8-bit input/output port

P31

Input/output is specifiable bit-wise.

TO1

When used as the input port, it is possible to

P32

use an on-chip pull-up resistor by software.

TO2

P33

TI1

P34

TI2

P35

PCL

P36

BUZ

P37

—

Notes

1. When the P07/XT1 pins are used as the input ports, set the processor clock control register (PCC) bit 6

(FRC) to 1, and be sure not to use the feedback resistor of the subsystem clock oscillation circuit.

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

mode. The on-chip pull-up resistors are automatically disabled.

Caution

For pins which also function as port pins, do not perform the following operations during A/D

conversion. If these operations are performed, the total error ratings cannot be kept.

<1> Rewrite the output latch while the pin is used as a port pin.

<2> Change the output level of the pin used as an output pin, even if it is not used as a port pin.

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