Pad Name

I/O

Options

Description

PD0/PWM

I/O

Pull-high

PD0 or PWM

Bidirectional I/O line. Software instructions determine the CMOS output,

Schmitt trigger input with or without a pull-high resistor (determined by

pull-high options: bit option). The PWM output function is pin-shared with

PD0 (dependent on PWM options).

RES

I

¾

Schmitt trigger reset input. Active low.

VDD

¾¾

Positive power supply

VSS

¾¾

Negative power supply, ground.

OSC1

OSC2

I

O

Crystal

or RC

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

¾

2.2

¾

5.5

V

¾

3.3

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

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

Input Low Voltage for I/O Ports,

TMR and INT

¾¾

0

¾

V

Input High Voltage for I/O Ports,

TMR and INT

¾¾

¾

V

Input Low Voltage (RES)

¾¾

0

¾

V

Input High Voltage (RES)

¾¾

¾

V

HT46R47/HT46C47

Rev. 1.30

3

May 3, 2004