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HT48R066G

Enhanced I/O Type MCU with OPA

Holtek Semiconductor 

HT48R064G/065G/066G/0662G

Enhanced I/O Type 8-Bit OTP MCU with OPA

Pin Description

The function of each pin is listed in the following tables, however the details behind how each pin is

configured is contained in the other individual peripheral function sections.

HT48R064G

Pin Name

PA0/A1N

PA1/PFD/A1X

PA2/TC0/A0X

PA3/INT/A0N

PA4/A0P

PA5/OSC2

PA6/OSC1

PA7/RES

PB0~PB3

PC0/CN

PC1/CX

PC4, PC5

PC6/A1P

Function OPT

I/T

O/T

Description

PA0

PAPU ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

PAWK

A1N COPA3C OPAI ¾ OPA1 inverting input pin

PAPU

PA1

PAWK ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

PFD

CTRL0 ¾ CMOS PFD output

A1X COPA3C ¾ OPAO OPA1 output pin

PA2

PAPU

PAWK

ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

TC0 TMR0C ST

¾ External Timer 0 clock input

A0X COPA3C ¾ OPAO OPA0 output pin

PAPU

PA3

PAWK ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

INT

INTC0

CTRL1 ST

¾ External interrupt input

A0X COPA3C OPAI ¾ OPA0 inverting input pin

PA4

PAPU

PAWK

ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

A0P COPA3C OPAI ¾ OPA0 non-inverting input pin

PA5

PAPU

PAWK

ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

OSC2

CO

¾ OSC Oscillator pin

PA6

PAPU ST CMOS General purpose I/O. Register enabled pull-up and wake-up.

PAWK

OSC1

CO OSC ¾ Oscillator pin

PA7

PAWK ST NMOS General purpose I/O. Register enabled wake-up.

RES

CO

ST

¾ Reset input

PBn

PBPU ST CMOS General purpose I/O. Register enabled pull-up.

PC0

PCPU ST CMOS General purpose I/O. Register enabled pull-up.

CN COPA3C CMPI ¾ Comparator inverting input pin

PC1

PCPU ST CMOS General purpose I/O. Register enabled pull-up.

CX COPA2C ¾ CMPO Comparator output pin

PCn

PCPU ST CMOS General purpose I/O. Register enabled pull-up.

PC6

PCPU ST CMOS General purpose I/O. Register enabled pull-up.

A1P COPA3C OPAI ¾ OPA1 non-inverting input pin

Rev. 1.10

9

October 23, 2012

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