HT9480 datasheet(5/57 Pages) HOLTEK

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Absolute Maximum Ratings*

Supply Voltage .............................. –0.3V to 5.5V

Storage Temperature................. –50

°C to 125°C

Input Voltage..................VSS–0.3V to VDD+0.3V

Operating Temperature............... –25

°C to 85°C

*Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent

damage to the device. These are stress ratings only. Functional operation of this device at

these or any other conditions above those indicated in the operational sections of this

specification is not implied and exposure to absolute maximum rating conditions for extended

periods may affect device reliability.

D.C. Characteristics

(Ta=25

°C)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VDD

Operating Voltage

—

3V application

2.2

3.0

3.5

IDD

Operating Current

No load,

fsys=153.6kHz

—300

—

µA

ISTB1

Standby Current 1

No load, System

HALT (Watchdog ON)

—200

—

µA

ISTB2

Standby Current 2

No load, System

HALT (Watchdog OFF)

——

µA

VIL

Input Low Voltage for

Input Port and I/O Port

—

VIH

Input High Voltage for

Input Port and I/O Port

—

2.2

—

VIL1

Input Low Voltage

(RES,TMR1,BAL)

—

VIH1

Input High Voltage

(RES,TMR1,BAL)

—

2.2

—

VIL2

Input Low Voltage (BAF)

—

0.9

VIH2

Input High Voltage (BAF)

—

1.3

—

IOL

I/O Port Sink Current

VOL=0.3V

1.7

3.4

—

IOH

I/O Port Source Current

VOH=2.7V

–1

–1.9

—

IOL

Segment 0-34 Output

Sink Current

VOL=0.3V

—

µA

IOH

Segment 0-34 Output

Source Current

VOH=2.7V

–20

–38

—

µA

IOL

BZ, Sink Current

VOL=0.3V

2.5

—

IOH

BZ, Source Current

VOH=2.7V

–1

–2

—

HT9480

23th Feb ’98

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