HT46R22 datasheet(4/46 Pages) HOLTEK

4 / 46 page

Pad Name

I/O

Options

Description

PD0/PWM

I/O

Pull-high

I/O or PWM

Bidirectional 1-bit input/output port. Software instructions deter-

mine the CMOS output, Schmitt trigger input with or without a

pull-high resistor (determined by pull-high option: port option).

The PWM output function is pin-shared with PD0 (dependent on

PWM optios).

RES

Schmitt trigger reset input. Active low.

VDD

¾¾

Positive power supply

OSC1

OSC2

Crystal or RC

OSC1, OSC2 are connected to an RC network or a Crystal (de-

termined by options) for the internal system clock. In the case of

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

TEST1

TEST2

TEST3

TEST mode input pin

It disconnects in normal operation

Absolute Maximum Ratings

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

-0.3V to VSS+5.5V

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

-50°Cto125°C

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

-0.3V to VDD+0.3V

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

-40°Cto85°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.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VDD1

Operating Voltage

¾ fSYS=4MHz

2.2

5.5

VDD2

Operating Voltage

¾ fSYS=8MHz

4.5

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

No load, fSYS=8MHz

ADC disable

IADC

Only ADC Enable, Others Disable

No load

0.5

1.5

ISTB1

Standby Current (WDT Enabled)

No load, system HALT

¾¾

ISTB2

Standby Current (WDT Disabled)

No load, system HALT

¾¾

VAD

A/D Input Voltage

¾¾

VDD

VIL1

Input Low Voltage for I/O Ports,

TMR and INT

0.3VDD

0.3

HT46R22/HT46C22

Rev. 1.10

October 2, 2002

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