HT48F06E datasheet(3/69 Pages) HOLTEK

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Pin Description

HT48F06E

Pad Name

I/O

Options

Description

PA0~PA7

I/O

Pull-high

Wake-up

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

input by configuration option. Software instructions determine if the pin is a

CMOS output or Schmitt Trigger input. A configuration option determines if all

pins on this port have pull-high resistors.

PB0/BZ

PB1/BZ

PB2

I/O

Pull-high

I/O or BZ/BZ

Bidirectional 3-bit input/output port. Software instructions determine if the pin

is a CMOS output or Schmitt Trigger input. A configuration option determines

if all pins on this port have pull-high resistors. Pins PB0 and PB1 are

pin-shared with BZ and BZ, respectively.

PC0/INT

PC1/TMR

I/O

Pull-high

Bidirectional 2-bit input/output port. Software instructions determine if the pin

is a CMOS output or Schmitt Trigger input. A configuration option determines

if all pins on this port have pull-high resistors. PC0 is pin-shared with the ex-

ternal interrupt pin INT and PC1 is pin-shared with the external timer input pin

TMR.

OSC1

OSC2

Crystal or RC

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

determined by configuration option, for the internal system clock. If the RC

system clock option is selected, pin OSC2 can be used to measure the sys-

tem clock at 1/4 frequency.

RES

Schmitt trigger reset input. Active low.

VDD

¾¾

Positive power supply

VSS

¾¾

Negative power supply, ground.

Note:

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

2. Individual pins cannot be selected to have pull-high resistors. If the pull-high configuration is chosen for

a particular port, then all input pins on this port will be connected to pull-high resistors.

3. Pins PB1/BZ and PB2 do not exist on the 16-pin NSOP package type.

HT48F10E

Pin Name

I/O

Configuration

Option

Description

PA0~PA7

I/O

Pull-high

Wake-up

Schmitt Trigger

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

input by configuration option. Software instructions determine if the pin is a

CMOS output or input. Configuration options determine if all pins on this port

have pull-high resistors and if the inputs are Schmitt Trigger or non-Schmitt

Trigger.

PB0/BZ

PB1/BZ

PB2~PB7

I/O

Pull-high

I/O or BZ/BZ

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

is a CMOS output or Schmitt Trigger input. A configuration option determines

if all pins on this port have pull-high resistors. Pins PB0 and PB1 are

pin-shared with BZ and BZ, respectively.

PC0/INT

PC1/TMR

PC2

I/O

Pull-high

Bidirectional 3-bit input/output port. Software instructions determine if the pin is

a CMOS output or Schmitt Trigger input. A configuration option determines if all

pins on this port have pull-high resistors. Pin PC0 is pin-shared with external in-

terrupt pin INT and PC1 shared with external timer pin TMR.

OSC1

OSC2

Crystal or RC

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

determined by configuration option, for the internal system clock. If the RC

system clock option is selected, pin OSC2 can be used to measure the sys-

tem clock at 1/4 frequency.

RES

Schmitt Trigger reset input. Active low.

VDD

¾¾

Positive power supply

VSS

¾¾

Negative power supply, ground

Note:

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

2. Individual pins cannot be selected to have pull-high resistors. If the pull-high configuration is chosen for

a particular port, then all input pins on this port will be connected to pull-high resistors.

HT48F06E/HT48F10E/HT48F30E

Rev. 1.00

September 10, 2007

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