GD32F310 datasheet(52/81 Pages) GIGADEVICE

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GD32F310xx Datasheet

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

frequency

VLXTALH(2)

OSC32IN input pin high level

voltage

—

0.7 VDD

—

VDD

VLXTALL(2)

OSC32IN input pin low level

voltage

—

VSS

—

0.3 VDD

tH/L(LXTAL) (2)

OSC32IN high or low time

—

450

—

tR/F(LXTAL) (2)

OSC32IN rise or fall time

—

CIN(2)

OSC32IN input capacitance

—

Ducy(LXTAL) (2)

Duty cycle

—

(1)

Based on characterization, not tested in production.

(2)

Guaranteed by design, not tested in production.

4.8

Internal clock characteristics

Table 4-18. High speed internal clock (IRC8M) characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fIRC8M

High Speed Internal

Oscillator (IRC8M)

frequency

VDD = VDDA = 3.3 V

—

MHz

ACCIRC8M

IRC8M oscillator

Frequency accuracy,

Factory-trimmed

VDD = VDDA = 3.3 V,

TA = -40 °C ~ +85 °C for

grade 6 devices

—

-0.62 to

0.46(1)

—

VDD = VDDA = 3.3 V,

TA = -40 °C ~ +105 °C for

grade 7 devices

—

-0.7 to

0.46(1)

—

VDD = VDDA = 3.3 V, TA =

25 °C

-1.0

—

+1.0

IRC8M oscillator

Frequency accuracy, User

trimming step(1)

—

0.5

—

DucyIRC8M(2

)

IRC8M oscillator duty

cycle

VDD = VDDA = 3.3 V

IDDAIRC8M(1)

IRC8M oscillator operating

current

VDD = VDDA = 3.3 V

—

μA

tSUIRC8M(1)

IRC8M oscillator startup

time

VDD = VDDA = 3.3 V

—

1.2

—

μs

(1)

Based on characterization, not tested in production.

(2)

Guaranteed by design, not tested in production.

Table 4-19. Low speed internal clock (IRC40K) characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fIRC40K(1)

Low Speed Internal oscillator

(IRC40K) frequency

VDD = VDDA = 3.3 V

—

kHz

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