HT45F39 datasheet(10/102 Pages) HOLTEK

10 / 102 page

Rev. 1.10

July 01, 2016

Rev. 1.10

July 01, 2016

HT45F39/HT45F391

Ultrasonic Distance Measurement 8-bit Flash MCU

HT45F39/HT45F391

Ultrasonic Distance Measurement 8-bit Flash MCU

D.C. Characteristics

Ta=25°C

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VDD

Conditions

VDD

Operating Voltage (Note)

—

4.5

—

5.5

IDD

Operating Current

No load,ADC disabled

—

ISTB

Standby Current

No load, all off except

WDT enable

—

VIL

Input Low Voltage for PA, PB, TCKn,

TPn, INT

—

1.5

4.5V~5.5V

— 0.2VDD

VIH

Input High Voltage for PA, PB, TCKn,

TPn, INT

—

3.5

—

4.5V~5.5V

0.8VDD —

VDD

VLVR

Low Voltage Reset

—

-5%

3.15 +5%

VBG

Reference Voltage with Buffer Voltage

—

-3%

1.04 +3%

IBG

Additional Power Consumption if

Reference with Buffer is used

—

200

300

ILVR

Additional Power Consumption if LVR

is Used

LVR enable

─

IOH

I/O Source Current (PA, PB)

VOH=0.9VDD

-5

-10

—

IOL

I/O Sink Current (PA, PB)

VOL=0.1VDD

—

RPH

Pull-high Resistance (I/O)

—

Note:ForHT45F39anexternalresistorshouldbeseriallyconnectedbetweenthesupplypowerandVDDpin.

Refertothe“ShuntRegulator”chapterforthedetails.

A.C. Characteristics

Ta=25°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

fSYS

System Clock

4.5V~5.5V

400

—

16000

kHz

fHIRC

HIRC OSC

4.75V~5.25V

Ta=-20°C~60°C

-2.0%

+2.0% MHz

Ta=-40°C~85°C

-2.5%

+2.5% MHz

fLIRC

System Clock (LIRC)

Ta=25°C

-10%

+10%

kHz

2.2V~5.5V Ta=-40°C ~85°C

-50%

+60%

kHz

tTIMER

TCKn Input Pin Minimum Pulse Width

—

0.3

—

tINT

Interrupt Minimum Pulse Width

—

tLVR

Low Voltage width to Reset

—

120

240

480

tSST

System Start-up Timer Period

—

tSYS

tRSTD

System Reset Delay Time

(Power On Reset)

—

100

System Reset Delay Time

(Any Reset except Power On Reset)

—

8.3

16.7

33.3

Note:1.tSYS=1/fSYS

2.TomaintaintheaccuracyoftheinternalHIRCoscillatorfrequency,a0.1mFdecouplingcapacitorshould

beconnectedbetweenVDDandVSSandlocatedasclosetothedevicesaspossible.

HT45F39 Datasheet(PDF) 10 Page - Holtek Semiconductor Inc

HT45F39 Datasheet(HTML) 10 Page - Holtek Semiconductor Inc

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