HT32F1253_12 datasheet(24/35 Pages) HOLTEK

24 / 35 page

Rev. 1.10

�4 of �5

��i� 1�� 01�

��-bit �RM Co�tex™-M� MCU

HT��F1�51/51B/5�/5�

External Clock Characteristics

Table 8. High Speed External Clock (HSE) Characteristics

T� = �5°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSE

High S�eed Exte�na� osci��ato�

f�equency (HSE)

VDD�� = �.�V

—

MHz

CHSE

Recommended �oad ca�acitance on

XT�LIN and XT�LOUT

—

TBD

—

�F

RFHSE

Recommended exte�na� feedback

�esisto� between XT�LIN and

XT�LOUT

—

1.0

—

MΩ

DHSE

HSE Osci��ato� Duty cyc�e

—

IDDHSE

HSE Osci��ato� O�e�ating Cu��ent

VDD�� = �.�V� T� = �5°C

—

0.96

—

m�

ISTBHSE

HSE Osci��ato� Standby cu��ent

VDD�� = �.�V� T� = �5°C

—

0.1

μA

tSUHSE

HSE Osci��ato� Sta�tu� time

VDD�� = �.�V� T� = �5°C

—

Table 9. Low Speed External Clock (LSE) Characteristics

T� = �5°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fLSE

Low S�eed Exte�na� osci��ato�

f�equency (LSE)

VDD�� = VB�T = �.�V

—

��.768

—

kHz

CLSE

Recommended �oad ca�acitance on

XT�L��KIN and XT�L��KOUT �ins —

—

TBD

—

�F

RFLSE

Recommended exte�na� feedback

�esisto� between XT�L��KIN and

XT�L��KOUT �ins

—

MΩ

DLSE

LSE Osci��ato� Duty cyc�e

—

IDDLSE

LSE Osci��ato� O�e�ating Cu��ent

VDD�� = VB�T = �.�V�

LSESM = 0 (No�ma�

sta�tu� mode)

—

1.7

—

μA

ISTBLSE

LSE Osci��ato� Standby cu��ent

VDD�� = VB�T = �.�V�

LSESM = 1 (Fast sta�tu�

mode)

—

�

μA

tSULSE

LSE Osci��ato� Sta�tu� time

VDD�� = VB�T = �.�V�

LSESM = 1 (Fast sta�tu�

mode)

—

�00

—

HT32F1253 Datasheet(PDF) 24 Page - Holtek Semiconductor Inc

HT32F1253 Datasheet(HTML) 24 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Datasheet Download

Link URL