HT46C47 datasheet(4/39 Pages) HOLTEK

4 / 39 page

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VLVR

Low Voltage Reset

¾¾

2.7

3.3

IOL

I/O Port Sink Current

VOL=0.1VDD

IOH

I/O Port Source Current

VOH=0.9VDD

-2

-4

VOH=0.9VDD

-5

-10

RPH

Pull-high Resistance

100

VAD

A/D Input Voltage

¾¾

VDD

EAD

A/D Conversion Error

¾¾

±0.5

±1

LSB

IADC

Additional Power Consumption

if A/D Converter is Used

0.5

1.5

A.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

fSYS

System Clock

2.2V~5.5V

400

4000

kHz

3.3V~5.5V

400

8000

kHz

fTIMER

Timer I/P Frequency

(TMR)

2.2V~5.5V

4000

kHz

3.3V~5.5V

8000

kHz

tWDTOSC

Watchdog Oscillator Period

180

130

tWDT1

Watchdog Time-out Period

(RC)

¾¾

tWDTOSC

tWDT2

Watchdog Time-out Period

(System Clock)

¾¾

tSYS

tRES

External Reset Low Pulse Width

¾¾

tSST

System Start-up Timer Period

Wake-up from HALT

1024

*tSYS

tINT

Interrupt Pulse Width

¾¾

tAD

A/D Clock Period

¾¾

tADC

A/D Conversion Time

¾¾

tAD

tADCS

A/D Sampling Time

¾¾

tAD

Note: *tSYS=1/fSYS

HT46R47/HT46C47

Rev. 1.30

May 3, 2004

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