HT32F22366 datasheet(38/56 Pages) HOLTEK

38 / 56 page

Rev. 1.00

38 of 56

�ove��e� 0�� 01�

3�-Bit A��® Co�tex®-M3 MCU

HT3�F1�365/HT3�F1�366/HT3�F��366

�. Shield lines in the vicinity of the c�ystal �y using a g�ound plane to isolate signals and �educe

noise.

3. Keep the f�equently switching signal lines away f�o� the c�ystal a�ea to p�event the

c�osstalk.

Internal Clock Characteristics

Table 13. High Speed Internal Clock (HSI) Characteristics

TA = �5 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VDD

Ope�ation Range

—

�.0

—

3.6

fHSI

F�equency of HSI

VDD = 3.3 V @ �5 °C

—

MHz

ACCHSI

F�equency accu�acy of

the facto�y-cali��ated HSI

oscillato�

VDD = 3.3 V� TA = �5 °C

-�

—

�

VDD = �.5 V ~ 3.6 V�

TA = -40 °C ~ 85 °C

-3

—

VDD = �.0 V ~ 3.6 V

TA = -40 °C ~ 85 °C

-4

—

Duty

Duty cycle

fHSI = 8 MHz

—

IDDHSI

Oscillato� supply cu��ent

fHSI = 8 MHz

—

��0

�50

μA

Powe� down cu��ent

—

0.05

μA

tSUHSI

Sta�tup ti�e

fHSI = 8 MHz

—

μs

Table 14. Low Speed Internal Clock (LSI) Characteristics

TA = �5 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

fLSI

Low Speed Inte�nal Oscillato�

F�equency (LSI)

VBAK = 3.3 V�

TA = -40 °C ~ 85 °C

�1

3�

kHz

ACCLSI

F�equency accu�acy of LSI

Afte� facto�y-t�i��ed�

VBAK = 3.3 V� TA = �5 °C

-10

—

+10

IDDLSI

LSI Oscillato� Ope�ating cu��ent VBAK = 3.3 V� TA = �5 °C

—

0.8

1.�

μA

tSULSI

LSI Oscillato� sta�tup ti�e

VBAK = 3.3 V� TA = �5 °C

—

100

μs

PLL Characteristics

Table 15. PLL Characteristics

TA = �5 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

fPLLI�

PLL input clock

—

MHz

fCK_PLL

PLL output clock

—

MHz

tLOCK

PLL lock ti�e

—

�00

—

μs

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