HT48R0AA-1 参数 Datasheet PDF下载

HT48R0AA-1

Pin Description

Pin Name

I/O

Configuration

Options

Pull-high

Wake-up

Description

Bidirectional 8-bit I/O port. Each bit can be configured as a wake-up input by

configuration option. Software instructions determined the CMOS output or

Schmitt trigger input with a pull-high resistor (determined by a pull-high configu-

ration option).

Bidirectional 8-bit I/O port. Software instructions determined the CMOS output or

Schmitt trigger input with a pull-high resistor (determined by a pull-high configu-

ration option). The PB0 and PB1 are pin-shared with the BZ and BZ, respec-

tively. Once the PB0 and PB1 are selected as buzzer driving outputs, the output

signals come from an internal PFD generator (shared with an 8 bits timer/event

counter).

Bidirectional 6-bit I/O lines. Software instructions determine the CMOS output

or Schmitt trigger input with a pull-high resistor (determined by a pull-high con-

figuration option). The Timer/Event Counter 0 and the Timer/Event Counter 1

counter input (Schmitt trigger input without pull-high resistor) are pin-shared

with the PC0 and PC5, respectively.

Bi-directional I/O line. Software instructions determine the CMOS output or

Schmitt trigger input with a pull-high resistor (determined by a pull-high configu-

ration option). the external interrupt input INT, is pin-shared with PD0 and is ac-

tivated on a high to low transition.

Positive power supply

Negative power supply, ground

Schmitt trigger reset input. Active low.

OSC1, OSC2 are connected to an RC network or Crystal (determined by con-

figuration options) for the internal system clock. In the case of RC operation,

OSC2 is the output terminal for 1/4 system clock.

PA0~PA7

I/O

PB0/BZ

PB1/BZ

PB2~PB7

I/O

Pull-high

I/O or BZ/BZ

PC0/TMR0

PC1~PC4

PC5/TMR1

I/O

Pull-high

PD0/INT

I/O

Pull-high

VDD

VSS

RES

OSC1

OSC2

Note:

¾

¾

I

I

O

¾

¾

¾

Crystal

or RC

The pull-high resistors of each I/O port (PA, PB, PC, PD) are controlled by configuration options.

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

Pins PC1~PC4 exist but are not bonded out on the 24-pin package.

Unbonded pins should be setup as outputs or as inputs with pull-high resistors to conserve power.

Absolute Maximum Ratings

Supply Voltage ...........................V

SS

-0.3V

to V

SS

+6.0V

Input Voltage..............................V

SS

-0.3V

to V

DD

+0.3V

I

OL

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

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.

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

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

I

OH

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

Rev. 1.10

3

July 27, 2007