HT46R53A Просмотр технического описания (PDF) - Holtek Semiconductor

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HT46R53A

A/D Type 8-Bit OTP MCU

Holtek Semiconductor 

HT46R53A/HT46R54A

Pin Description

Pin Name

PA0~PA2

PA3/PFD

PA4/TMR

PA5/INT

PA6~PA7

PB0/AN0~

PB7/AN7

PC0~PC4

PD0/PWM

OSC1

OSC2

I/O Options

Description

Bidirectional 8-bit input/output port. Each individual bit on this port can be

I/O

Pull-high

Wake-up

PA3 or PFD

configured as a wake-up input by configuration option. Software instruc-

tions determine if the pin is a CMOS output or Schmitt trigger input. Config-

uration options determine which pin on this port have pull-high resistors.

The PFD, TMR and external interrupt input are pin-shared with PA3, PA4,

and PA5 respectively.

Bidirectional 8-bit input/output port. Software instructions determine the

CMOS output or Schmitt trigger input with or without pull-high resistor.

I/O

Pull-high

Configuration options determine which pin on this port have pull-high resis-

tors. PB is pin-shared with the A/D input pins. The A/D inputs are selected

via software instructions Once selected as an A/D input, the I/O function

and pull-high resistor functions are disabled automatically.

Bidirectional 5-bit input/output port. Software instructions determine the

I/O

Pull-high

CMOS output or Schmitt trigger input with or without pull-high resistor.

Configuration options determine which pin on this port have pull-high resis-

tors.

Bidirectional 1-bit input/output port. Software instructions determine the

I/O

Pull-high

PD0 or PWM

CMOS output or Schmitt trigger input with or without pull-high resistor. One

configuration option determines which pin on this port has pull-high resis-

tor. PD0 is pin-shared with the PWM output selected via configuration op-

tion.

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

I

O

Crystal or RC

(determined by configuration option) for the internal system clock. For ex-

ternal RC system clock operation, OSC2 is an output pin for 1/4 system

clock.

RES

VDD

VSS

VREF

I

¾

Schmitt trigger reset input, active low.

¾

¾

Positive power supply

¾

¾

Negative power supply, ground

I

¾

A/D Converter Reference Input voltage pins. Connect this pin to the de-

sired A/D reference voltage.

Absolute Maximum Ratings

Supply Voltage ...........................VSS-0.3V to VSS+6.0V

Input Voltage..............................VSS-0.3V to VDD+0.3V

IOL Total ..............................................................150mA

Total Power Dissipation .....................................500mW

Storage Temperature ............................-50°C to 125°C

Operating Temperature...........................-40°C to 85°C

IOH Total............................................................-100mA

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those

listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-

ity.

Rev. 1.00

3

August 24, 2006

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