HT46C23 datasheet(4/48 Pages) HOLTEK

4 / 48 page

Pad Name

I/O

Option

Description

PD0/PWM0

PD1/PWM1

I/O

Pull-high

I/O or PWM

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

CMOS output, Schmitt trigger input with or without a pull-high resistor (de-

termined by pull-high option: port option). The PWM0/PWM1 output func-

tion are pin-shared with PD0/PD1 (dependent on PWM options).

RES

Schmitt trigger reset input. Active low.

VDD

¾¾

Positive power supply

VSS

¾¾

Negative power supply, ground.

OSC1

OSC2

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

TEST mode input pin.

It disconnects in normal operation.

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

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

VDD

Operating Voltage

fSYS=4MHz

2.2

5.5

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

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

VIH2

Input High Voltage (RES)

¾¾

0.9VDD

VDD

HT46R23/HT46C23

Rev. 1.60

May 3, 2004

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