HT32F1655 datasheet(32/48 Pages) HOLTEK

32 / 48 page

Rev. 1.00

3� of �8

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3�-bit ARM® Cortex™-M3 MCU

HT3�F1656/HT3�F1655

Reset and Supply Monitor Characteristics

Table 8. LVD/BOD Characteristics

TA = �5°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VBOD

Brown O�t Detector Vo�tage

—

�.6

—

VLVD

Vo�tage of Low Vo�tage Detector

LVDS (Note1) = ‘000’

—

�.7

—

LVDS (Note1) = ‘001’

—

�.8

—

LVDS (Note1) = ‘010’

—

�.9

—

LVDS (Note1) = ‘011’

—

3.0

—

LVDS (Note1) = ‘100’

—

3.1

—

LVDS (Note1) = ‘101’

—

3.�

—

LVDS (Note1) = ‘110’

—

3.�

—

LVDS (Note1) = ‘111’

—

3.5

—

VPOR

Power On Reset Vo�tage

—

1.36

—

Note: LVDS field is in PWRCU LVDCSR register

External Clock Characteristics

Table 9. High Speed External Clock (HSE) Characteristics

TA = �5°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSE

High Speed Externa� osci��ator

freq�enc� (HSE)

VDD33 = 3.3 V

�

—

MHz

CHSE

Recommended �oad capacitance on

XTALIN and XTALOUT pins

—

TBD

—

RFHSE

Recommended externa� feedback

resistor between XTALIN and

XTALOUT pins

—

1.0

—

MΩ

DHSE

HSE osci��ator D�t� c�c�e

�0

—

IDDHSE

HSE osci��ator c�rrent cons�mption

VDD33 = 3.3 V� TA = �5°C

—

0.96

—

ISTBHSE

HSE osci��ator standb� c�rrent

VDD33 = 3.3 V� TA = �5°C

—

0.1

μA

tSUHSE

HSE osci��ator start�p time

VDD33 = 3.3 V� TA = �5°C

—

�

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