HT86A72 datasheet(10/68 Pages) HOLTEK

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Pin Description

Pin Name

I/O

Options

Description

PA0~PA7

I/O

Wake-up,

Pull-high

Bidirectional 8-bit I/O port. Each pin on this port can be configured as a wake-up

input by a configuration option. Software instructions determine if the pin is a

CMOS output or Schmitt trigger input. Configuration options determine which pins

on the port have a pull-high resistor.

PB0~PB7

I/O

Pull-high

Bidirectional 8-bit I/O port. Software instructions determine if the pin is a CMOS

output or Schmitt trigger input. Configuration options determine which pins on the

port have a pull-high resistor.

PC0/AD0

PC1/AD1

PC2/AD2

PC3/AD3

PC4~PC7

I/O

Pull-high

Bidirectional 8-bit I/O port. Software instructions determine if the pin is a CMOS

output or Schmitt trigger input. Configuration options determine which pins on the

port have a pull-high resistor. Pins PC0~PC3 are pin-shared with A/D converter

input pins AD0~AD3.

PD0/SCS

PD1/SCK

PD2/SDI

PD3/SDO

PD4~PD7

I/O

Pull-high

Bidirectional 8-bit I/O port. Software instructions determine if the pin is a CMOS

output or Schmitt trigger input. Configuration options determine which pin on the

port have a pull-high resistor. Pins PD0~PD3 are pin-shared with SPI interface

pins SCS, SCK, SDI, SDO.

PE0~PE7

I/O

Pull-high

Bidirectional 8-bit I/O port. Software instructions determine if the pin is a CMOS

output or Schmitt trigger input. Configuration options determine which pins on the

port have a pull-high resistor.

AUD_OUT

Audio output for driving an external transistor or for driving HT82V739

AUD_IN

Power amplifier input pin

SP-, SP+

Power amplifier output pins

VBIAS

Voltage bias pin

RES

Schmitt trigger reset input. Active low.

INT

Falling Edge

Trigger or

Falling/Rising

Edge Trigger

External interrupt Schmitt trigger input without pull-high resistor. A configuration

option determines if the interrupt active edge is a falling edge only or both a falling

and rising edge.

OSC1

OSC2

Crystal

or RC

OSC1, OSC2 are connected to an external RC network or external crystal, deter-

mined by configuration option, for the internal system clock. If the RC system

clock option is selected, pin OSC2 can be used to measure the system clock at

1/4 frequency.

XIN

XOUT

Crystal

Connected to an external 32kHz crystal

VREF

A/D circuit reference voltage

VDD

¾¾

Positive digital power supply

VSS

¾¾

Negative digital power supply, ground.

VDDA

¾¾

Positive DAC circuit power supply

VSSA

¾¾

Negative DAC circuit power supply, ground

VDDA1

¾¾

Positive A/D circuit power supply

VSSA1

¾¾

Negative A/D circuit power supply, ground

VDDM

¾¾

Positive Power Amp. power supply

VSSM

¾¾

Negative Power Amp. power supply, ground

Note: 1. Each pin on PA can be programmed through a configuration option to have a wake-up function.

2. Individual pins can be selected to have pull-high resistors.

HT86Axx/HT86ARxx

Rev. 1.10

December 12, 2012

HT86A72 Datasheet(PDF) 10 Page - Holtek Semiconductor Inc

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