HT82K94A datasheet(5/43 Pages) HOLTEK

5 / 43 page

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

IOL1

I/O Port Sink Current for PA1~PA7,

PB, PC, PD, PE

VOL=3.4V

IOL2

I/O Port Sink Current for PA1~PA7,

PB, PC, PD, PE

VOL=0.4V

248

IOL3

I/O Port Sink Current for PA0

VOL=0.4V

IOH1

I/O Port Source Current for PA1~PA7,

PB, PC, PD, PE

VOH=3.4V

-2

-4

-8

IOH2

I/O Port Source Current for PA0

VOH=3.4V

-12

-18

-24

RPH

Pull-high Resistance for PA, PB, PC,

PD, PE

VLVR

Low Voltage Reset

2-battery option

2.1

2.2

2.3

3-battery option

2.3

2.4

2.5

VLVD

Low Battery Detecting Voltage

2-battery option

2.3

2.4

2.5

3-battery option

2.5

2.6

2.7

VV33O

3.3V Regulator Output

IV33O=

-5mA

3.0

3.3

3.6

Note:

²*² include 15kW loading of USBD+, USBD- line in host terminal.

A.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

fSYS

System Clock (Crystal OSC)

MHz

fTIMER

Timer I/P Frequency (TMR)

MHz

tWDTOSC Watchdog Oscillator

tWDT1

Watchdog Time-out Period (WDT OSC) 5V

Without WDT prescaler

tWDT2

Watchdog Time-out Period

(System Clock)

¾ Without WDT prescaler

1024

tSYS

tRES

External Reset Low Pulse Width

¾¾

tSST

System Start-up Timer Period

Wake-up from HALT

1024

tSYS

Power-up, Watchdog

Time-out from normal

1024

tWDTOSC

tINT

Interrupt Pulse Width

¾¾

HT82K94E/HT82K94A

Rev. 2.40

November 5, 2014

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