HT45FH4J datasheet(13/129 Pages) HOLTEK

13 / 129 page

Rev. 1.10

1�

De�e��e� 1�� 01�

Rev. 1.10

De�e��e� 1�� 01�

HT45FH4J

Emergency Light Flash MCU

HT45FH4J

Emergency Light Flash MCU

A.C. Characteristics

Ta = �5°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max. Unit

VDD

Conditions

fCPU

Ope�ating Clo�k

5V±3%

—

1�

MHz

—

1�

MHz

—

�0

MHz

fSYS

Syste� Clo�k (HIRC)

5V±3%

—

1�

MHz

—

1�

MHz

—

�0

MHz

fHIRC

HIRC F�equen�y (note)

5V±3%

Ta=�5°C

-�% 1�/1�/�0 +�%

MHz

Ta=-�0°C~85°C

-5% 1�/1�/�0 +5%

MHz

fLIRC

LIRC F�equen�y

5V±3%

Ta=�5°C

-10%

3�

+10% kHz

Ta=-�0°C ~ 85°C

-30%

3�

+�0% kHz

tTIMER

TCKn Input Pin Mini�u�

Pulse Width

—

tINT

Inte��upt Mini�u� Pulse Width

—

3.3

μs

tEERD

EEPROM Read Ti�e

—

�

tSYS

tEEWR

EEPROM W�ite Ti�e

—

�

�s

tSST

Syste� Sta�t-up Ti�e� Pe�iod

(Wake-up f�o� HALT� fSYS off

at HALT state)

—

fSYS=HIRC

1�

—

tHIRC

fSYS=LIRC

�

—

tSYS

Syste� Sta�t-up Ti�e� Pe�iod

(Wake-up f�o� HALT� fSYS on

at HALT state)

—

fSYS=HIRC

�

—

tHIRC

tRSTD

Syste� Reset Delay Ti�e

(Powe� on Reset� LVR H/W Reset�

LVR S/W Reset� WDT S/W Reset)

—

�5

100

�s

Syste� Reset Delay Ti�e

(WDT No��al Reset)

—

8.3

1�.7

33.3

�s

Note:1.tSYS=1/fSYS,tHIRC=1/fHIRC

2.TomaintaintheaccuracyoftheinternalHIRCoscillatorfrequency,a0.1μFdecouplingcapacitorshould

beconnectedbetweenVDDandVSSandlocatedasclosetothedeviceaspossible.

HT45FH4J Datasheet(PDF) 13 Page - Holtek Semiconductor Inc

HT45FH4J Datasheet(HTML) 13 Page - Holtek Semiconductor Inc

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