HT82B40R datasheet(3/57 Pages) HOLTEK

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Pin Description

Pin Name

I/O

Options

Description

PA0~PA5

PA6/TMR0

PA7/TMR1

I/O

Pull-high

Wake-up

NMOS/CMOS/PMOS

Bidirectional 8-bit input/output port. Each pin can be configured as a

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

mine if the pin is a CMOS output or NMOS, PMOS or Schmitt Trigger

input. Configuration options determine if the structures are CMOS,

NMOS or PMOS types. Configuration options determine if the pins

have pull-high resistors. TMR0 and TMR1 are pin-shared with PA6 and

PA7, respectively.

PB0~PB7

I/O

Pull-high

Wake-up

Bidirectional 8-bit input/output port. Each nibble can be configured as a

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

mine if the pin is a CMOS output or Schmitt Trigger input. Configuration

options determine if the pins have pull-high resistors. The power supply

of PB0~PB7 can be optioned as VDD or V33O output.

PC0~PC7

I/O

Pull-high

Wake-up

Bidirectional 8-bit input/output port. Each nibble can be configured as a

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

mine if the pin is a CMOS output or Schmitt Trigger input. Configuration

options determine if the pins have pull-high resistors.

PD0~PD7

I/O

Pull-high

Wake-up

Bi-directional 8-bit input/output port. Each nibble can be configured as

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

mine if the pin is a CMOS output or Schmitt Trigger input. Configuration

options determine if the pins have pull-high resistors.

PE0~PE1

I/O

Pull-high

Wake-up

Bidirectional 2-bit input/output port. Each pin can be configured as a

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

mine if the pin is a CMOS output or Schmitt Trigger input. Configuration

options determine if the pins have pull-high resistors.

D+/CLK

I/O

USBD+ line. USB function is controlled by software control register

D-/DATA

I/O

USBD- line. USB function is controlled by software control register

RES

Schmitt trigger reset input. Active low

VSS

¾¾

Digital negative power supply, ground

VDD

¾¾

Digital positive power supply

V33O

3.3V regulator output

Note: As the Pin Description table applies to the largest package size not all pin may exist on smaller packages.

Absolute Maximum Ratings

Supply Voltage ...........................VSS

-0.3V to VSS+6.0V

Storage Temperature ............................

-50°Cto125°C

Input Voltage..............................VSS

-0.3V to VDD+0.3V

Operating Temperature...........................

-40°Cto85°C

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

IOH Total............................................................

-100mA

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

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 reliability.

HT82B40R/HT82B40A

Rev. 1.10

September 4, 2009

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