HT46R232 Ver la hoja de datos (PDF) - Holtek Semiconductor

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HT46R232

A/D Type 8-Bit MCU

Holtek Semiconductor 

HT46R232/HT46C232

Pin Description

Pin Name

PA0~PA2

PA3/PFD

PA4

PA5/INT

PA6/SDA

PA7/SCL

PB0/AN0

PB1/AN1

PB2/AN2

PB3/AN3

PB4/AN4

PB5/AN5

PB6/AN6

PB7/AN7

PC0~PC7

PD0/PWM0

PD1/PWM1

PD2/PWM2

PD3/PWM3

PD4~PD7

PF0~PF7

TMR0

TMR1

RES

VSS

VDD

OSC1

OSC2

I/O

Options

Description

Bidirectional 8-bit input/output port. Each bit can be configured as wake-up

Pull-high input by option (bit option). Software instructions determine the CMOS out-

I/O

Wake-up put or Schmitt trigger input with or without pull-high resistor (determined by

PA3 or PFD pull-high options: bit option). The PFD and INT are pin-shared with PA3

I/O or Serial Bus and PA5, respectively. Once the I2C Bus function is used, the internal regis-

ters related to PA6 and PA7 cannot be used.

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

CMOS output, Schmitt trigger input with or without pull-high resistor (deter-

I/O

Pull-high mined by pull-high option: bit option) or A/D input. Once a PB line is se-

lected as an A/D input (by using software control), the I/O function and

pull-high resistor are automatically disabled.

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

I/O

Pull-high CMOS output, Schmitt trigger input with or without pull-high resistor (deter-

mine by pull-high option: byte option).

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

I/O

Pull-high

PWM

CMOS output, Schmitt trigger input with or without a pull-high resistor (de-

termined by pull-high option: byte option). The PWM0/PWM1/PWM2/

PWM3 output function are pin-shared with PD0/PD1/PD2/PD3 (depending

on the PWM options).

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

I/O

Pull-high CMOS output, Schmitt trigger input with or without pull-high resistor (deter-

mine by pull-high option: byte option).

I

¾

Timer/Event Counter 0 Schmitt trigger input (without pull-high resistor)

I

¾

Timer/Event Counter 1 Schmitt trigger input (without pull-high resistor).

I

¾

Schmitt trigger reset input, active low

¾

¾

Negative power supply, ground

¾

¾

Positive power supply

I

O

Crystal or RC

OSC1 and OSC2 are connected to an RC network or a crystal (by options)

for the internal system clock. In the case of RC operation, OSC2 is the

output terminal for 1/4 system clock.

Absolute Maximum Ratings

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

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

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

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

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. 1.40

3

November 23, 2005

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