HT46R92 Ver la hoja de datos (PDF) - Holtek Semiconductor

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Fabricante

HT46R92

A/D Type 8-Bit MCU with 16
16 High Current LED Driver

Holtek Semiconductor 

HT46R92

Pin Description

Pin Name

I/O

Configuration

Option

Description

PA0/BZ

PA1/BZ

PA2/TMR

PA3

PA4/PWM0

PA5/PWM1

I/O

Pull-high,

Wake-up,

BZ/BZ,

PWM0~PWM1

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

ured as a wake-up input by a configuration option. Software instructions deter-

mine if the pin is a CMOS output or Schmitt Trigger input. A configuration option

determines if all pins on the port have pull-high resistors. Pins PA0, PA1, PA2,

PA4 and PA5 are pin-shared with BZ, BZ, TMR, PWM0 and PWM1, respectively.

PA6, PA7

PB0/AN0

PB1/AN1

PB2/AN2

PB3/AN3 I/O

PB4/AN4

PB5/AN5

¾

Bidirectional 8-bit input/output port. Software instructions determine if the pin is a

CMOS output or Schmitt Trigger input. 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 in-

put, the I/O function is disabled automatically.

PB6, PB7

PC0~PC3

PC4/COM0

PC5/COM1 O

PC6/COM2

PC7/COM3

¾

8-bit CMOS output port.

PC4~PC7 can be used as COM0~COM3.

PD0/INT I/O

PD1~PD7 O

¾

8-bit CMOS output port. PD0 is pin-shared with the external interrupt input pin.

PE0~PE7 O

¾

8-bit CMOS output port.

OSC1

OSC2

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

I

O

Crystal or RC

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.

OSC3

I

OSC4

O

¾

OSC3 and OSC4 are connected to an external 32768Hz crystal oscillator to im-

plement a system clock and real time clock.

RES

I

¾

Schmitt Trigger reset input. Active low.

VDD

¾

¾

Positive power supply

VSS

¾

¾

Negative power supply, ground

VREF

A/D Reference voltage input pin.

VDDB

VDDC

¾

¾

PB & PC port positive power supply

VSSD,

VSSE

¾

¾

PD & PE port negative power supply, ground

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

2. As the table applies to the larger package size not all pins may exist on the smaller packages.

Rev. 1.10

3

November 5, 2008

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