NEC PD78058FY(A) User Manual

Page 127

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127

CHAPTER 6 PORT FUNCTIONS

P70

SI2/RxD

P71

SO2/TxD

P72

SCK2/ASCK

P120 to P127

RTP0 to RTP7

P130 and P131

ANO0, ANO1

Table 6-1. Port Functions (

µ

PD78058F Subseries) (2/2)

Pin Name

Function

Alternate Function

P60

Port 6.

N-ch open-drain input/output port.

P61

8-bit input/output port.

On-chip pull-up resistor can be specified by

P62

Input/output mode can be specified

mask option. (Mask ROM version only).

P63

bit-wise.

LEDs can be driven directly.

P64

If used as an input port, an on-chip pull-up

RD

P65

resistor can be used by software.

WR

P66

WAIT

P67

ASTB

Port 7.

3-bit input/output port.

Input/output mode can be specified bit-wise.

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

Port 12.

8-bit input/output port.

Input/output mode can be specified bit-wise.

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

Port 13.

2-bit input/output port.

Input/output mode can be specified bit-wise.

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

Cautions For pins which have alternate functions as port output (See 3.1.1 Normal operating mode pins,

(1) Port Pins), do not execute the following operations during A/D conversion. If performed,

then the general error standards cannot be maintained during A/D conversion.

<1>

If it is used as a port, rewriting the output latch of its output.

<2>

Even if it is not used as a port, changing the output level of pins used as outputs.

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