HT46R46E datasheet(5/73 Pages) HOLTEK

5 / 73 page

Pin Name

I/O

Configuration

Option

Description

PD0/PWM0

PD1/PWM1

I/O

Pull-high

I/O or PWM

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

is a CMOS output or Schmitt Trigger input. Configuration option determines if

this pin has a pull-high resistor. The PWM output are pin-shared with pins

PD0 and PD1 selected via a configuration option.

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 can be selected to have a pull-high resistor.

3. Pins PC2~PC4 and pin PD1/PWM1 exist but are not bonded out on the 24-pin package.

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

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.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VDD

Operating Voltage

¾ fSYS=4MHz

2.2

5.5

¾ fSYS=8MHz

3.3

5.5

IDD1

Operating Current (Crystal OSC)

No load, fSYS=4MHz

ADC disable

0.6

1.5

IDD2

Operating Current (RC OSC)

No load, fSYS=4MHz

ADC disable

0.8

1.5

2.5

IDD3

Operating Current

(Crystal OSC, RC OSC)

No load, fSYS=8MHz

ADC disable

ISTB1

Standby Current (WDT Enabled)

No load,

system HALT

¾¾

ISTB2

Standby Current (WDT Disabled)

No load,

system HALT

¾¾

VIL1

Input Low Voltage for I/O Ports,

TMR and INT

¾¾

0.3VDD

VIH1

Input High Voltage for I/O Ports,

TMR and INT

¾¾

0.7VDD

VDD

VIL2

Input Low Voltage (RES)

¾¾

0.4VDD

HT46R46E/C46E/R47E/C47E/R48AE/C48AE/R49E

Rev. 1.20

August 15, 2007

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