HT16C21 datasheet(6/34 Pages) HOLTEK

6 / 34 page

Rev. 1.00

November 22, 2011

HT16C21

D.C. Characteristics

VSS = 0V; VDD = 2.4 to 5.5V; Ta =-40~85°C

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

VDD

Condition

VDD

Operating Voltage

—

2.4

—

5.5

VLCD

Operating Voltage

—

VDD

IDD

Operating Current

No load, VLCD=VDD, 1/3bias,

fLCD=80Hz, LCD display on,

internal system oscillator on,

DA0~DA3 are set to "0000"

—

μA

—

μA

IDD1

Operating Current

No load, VLCD=VDD, 1/3bias

fLCD=80Hz, LCD display off,

internal system oscillator on,

DA0~DA3 are set to "0000"

—

μA

—

μA

ISTB

Standby Current

No load, VLCD=VDD,

LCD display off,

internal system oscillator off

—

μA

—

μA

VIH

Input High Voltage

—

SDA ,SCL

0.7VDD

—

VDD

VIL

Input Low Voltage

—

SDA, SCL

—

0.3VDD

IIL

Input Leakage Current

—

VIN = VSS or VDD

-1

—

μA

IOL

Low Level Output Current

VOL=0.4V

SDA

—

IOL1

LCD COM Sink Current

VLCD=3V, VOL=0.3V

250

400

—

μA

VLCD=5V, VOL=0.5V

500

800

—

μA

IOH1

LCD COM Source Current

VLCD=3V, VOH=2.7V

-140

-230

—

μA

VLCD=5V, VOH=4.5V

-300

-500

—

μA

IOL2

LCD SEG Sink Current

VLCD=3V, VOL=0.3V

250

400

—

μA

VLCD=5V, VOL=0.5V

500

800

—

μA

IOH2

LCD SEG Source Current

VLCD=3V, VOH=2.7V

-140

-230

—

μA

VLCD=5V, VOH=4.5V

-300

-500

—

μA

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