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

I

¾

Schmitt trigger reset input. Active low.

VDD

¾¾

Positive power supply

OSC1

OSC2

I

O

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

I

¾

TEST mode input pin

It disconnects in normal operation

Absolute Maximum Ratings

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

-50°Cto125°C

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

Conditions

Operating Voltage

2.2

¾

5.5

V

Operating Voltage

4.5

¾

5.5

V

Operating Current (Crystal OSC)

3V

ADC disable

¾

0.6

1.5

mA

5V

¾

24

mA

Operating Current (RC OSC)

3V

ADC disable

¾

0.8

1.5

mA

5V

¾

2.5

4

mA

Operating Current

5V

ADC disable

¾

35

mA

Only ADC Enable, Others Disable

3V

No load

¾

0.5

1

mA

5V

¾

1.5

3

mA

Standby Current (WDT Enabled)

3V

No load, system HALT

¾¾

5

mA

5V

¾¾

10

mA

Standby Current (WDT Disabled)

3V

No load, system HALT

¾¾

1

mA

5V

¾¾

2

mA

A/D Input Voltage

¾¾

0

¾

V

Input Low Voltage for I/O Ports,

TMR and INT

3V

¾

0

¾

V

5V

¾

0

¾

0.3

V

HT46R22/HT46C22

Rev. 1.10

4

October 2, 2002