Panasonic F77G, MN101C77C user manual Pin Function Summary 5/6

Models: F77G MN101C77C

1 544
Download 544 pages 59.61 Kb
Page 33
Image 33

Chapter 1 Overview

Table 1-3-7 Pin Function Summary (5/6)

Name

No.

I/O

Function

Other Function

Description

 

 

 

 

 

 

BUZZER

21

Output

Buzzer output

P06

Piezoelectric buzzer driver pin. The driving

 

 

 

 

 

frequency can be selected by the DLYCTR

 

 

 

 

 

register. Select output mode by the P0DIR

 

 

 

 

 

register and select P06 buzzer output by the

 

 

 

 

 

DLYCTR register. When not used for buzzer

 

 

 

 

 

output, this pin can be used as a normal I/O pin.

 

 

 

 

 

 

TCI07

26

I/O

Timer I/O pin

P14

Event counter clock input pin, overflow pulse and

 

 

 

 

 

PWM signal output pin for 16-bit timer 7. To use

 

 

 

 

 

this pin as event clock input, configure this as

 

 

 

 

 

input by the P1DIR register. In the input mode,

 

 

 

 

 

pull-up resistors can be selected by the P1PLU

 

 

 

 

 

register. For overflow pulse, PWM signal output,

 

 

 

 

 

select the special function pin by the port 1 output

 

 

 

 

 

mode register (P1OMD), and set to the output

 

 

 

 

 

mode by the P1DIR register. When not used for

 

 

 

 

 

timer I/O, this can be used as normal I/O pin.

 

 

 

 

 

 

VREF+

6

-

+ power supply for

 

Reference power supply pins for the A/D

 

 

A/D converter

 

converter. Normally, the values of VDD=VREF+

 

 

 

 

VREF-

61

-

- power supply for

 

and VSS=VREF- are used. When they are not

 

 

 

A/D converter

 

used, the values should be VREF+=VDD and

 

 

 

 

 

VREF-=VSS.

 

 

 

 

 

 

AN0

62

Input

Analog input pins

PA0, DA0

Analog input pins for an 7-channel, 10-bit A/D

converter. When not used for analog input, these

AN1

63

 

 

PA1, DA1

 

 

pins can be used as normal I/O pins.

AN2

64

 

 

PA2

 

 

 

AN3

1

 

 

PA3

 

AN4

2

 

 

PA4

 

AN5

3

 

 

PA5

 

AN6

4

 

 

PA6

 

 

 

 

 

 

DA0

62

Output

Analog output pins

PA0, AN0

Analog output pins for an 2-channel, 8-bit D/A

DA1

63

 

 

PA1, AN1

converter. When not used for analog output,

 

 

 

 

 

these pins can be used as normal I/O pins.

 

 

 

 

 

 

IRQ0

27

Input

External interrupt

P20

External interrupt input pins. The valid edge for

IRQ1

28

 

input pins

P21, ACZ

IRQ0 to 4 can be selected with the IRQnICR

 

 

register. IRQ1 is an external interrupt pin that is

IRQ2

29

 

 

P22

 

 

able to deternine AC zero crossings. Both edge

IRQ3

30

 

 

P23

for IRQ0 to 4 are valid for interrupt. When these

IRQ4

31

 

 

P24

are not used for interrupts, these can be used as

 

 

 

 

 

normal input pins.

 

 

 

 

 

 

ACZ

28

Input

AC zero-cross

P21, IRQ1

An input pin for an AC zero-cross detection circuit.

 

 

 

detection input pin

 

The AC zero-cross detection circuit outputs a high

 

 

 

 

 

level when the input is at an intermediate level. It

 

 

 

 

 

outputs a low level at all other times. ACZ input

 

 

 

 

 

signal is connected to the P21 input circuit and

 

 

 

 

 

the IQR1 interrupt circuit. When the AC zero-cross

 

 

 

 

 

detection circuit is not used, this pin can be used

 

 

 

 

 

as a normal P21 input.

 

 

 

 

 

 

Pin Description

I - 15

Page 33
Image 33
Panasonic F77G, MN101C77C user manual Pin Function Summary 5/6