HT36A2 datasheet(4/24 Pages) HOLTEK

4 / 24 page

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VDD

Operating Voltage

¾¾

2.4

IDD

Operating Current

No load, fOSC=8MHz

816

ISTB

Standby Current (WDT Disabled)

No load

System HALT

¾mA

IOL

I/O Ports Sink Current

VOL=0.5V

9.7

16.2

IOH

I/O Ports Source Current

VOH=4.5V

-5.2

-8.7

RPH

Pull-High Resistance of I/O Ports

VIL=0V

VIH1

Input High Voltage for I/O Ports

3.5

VIL1

Input Low Voltage for I/O Ports

1.5

VIH2

Input High Voltage (RES)5V

¾¾

VIL2

Input Low Voltage (RES)5V

¾¾

2.5

A.C. Characteristics

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

MCU interface

fOSC

System Frequency

8MHz crystal

MHz

fSYS

System Clock

MHz

tWDT

Watchdog Time-Out Period (RC)

Without WDT prescaler

tRES

External Reset Low Pulse Width

¾¾

Characteristics Curves

R vs F Characteristics Curve

HT36A2

Rev. 1.00

June 19, 2003

1 2 0

1 5 0

1 8 0

2 0 0

2 2 0

2 4 0

2 7 0

3 0 0

H T 3 6 A 2 R v s . F C h a r t

1 4

1 2

1 0

R ( k W )

3 . 0 V

4 . 5 V

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