GD32F310 datasheet(59/81 Pages) GIGADEVICE

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GD32F310xx Datasheet

4.14

Temperature sensor characteristics

Table 4-33. Temperature sensor characteristics(1)

Symbol

Parameter

Min

Typ

Max

Unit

VSENSE linearity with temperature

—

±1.5

—

℃

Avg_Slope

Average slope

—

4.3

—

mV/℃

V25

Voltage at 25 °C

—

1.45

—

tS_temp (2)

ADC sampling time when reading the temperature

—

17.1

—

μs

(1)

Based on characterization, not tested in production.

(2)

Shortest sampling time can be determined in the application by multiple iterations.

4.15

I2C characteristics

Table 4-34. I2C characteristics(1)(2)(3)

Symbol

Parameter

Conditions

Standard

mode

Fast mode

plus

Unit

Min

Max

Min

Max

Min

Max

tSCL(H)

SCL clock high

time

—

4.0

—

0.6

—

0.2

—

μs

tSCL(L)

SCL clock low

time

—

4.7

—

1.3

—

0.5

—

μs

tSU(SDA)

SDA setup time

—

250

—

100

—

tH(SDA)

SDA data hold

time

—

0(3)

3450

900

450

tR(SDA/SCL)

SDA and SCL

rise time

—

1000

—

300

—

120

tF(SDA/SCL)

SDA and SCL

fall time

—

300

—

300

—

120

tH(STA)

Start condition

hold time

—

4.0

—

0.6

—

0.26

—

μs

tSU(STA)

Repeated Start

condition

setup time

—

4.7

—

0.6

—

0.26

—

μs

tSU(STO)

Stop condition

setup time

—

4.0

—

0.6

—

0.26

—

μs

tBUFF

Stop to Start

condition time

(bus free)

—

4.7

—

1.3

—

0.5

—

μs

(1)

Guaranteed by design, not tested in production.

(2)

To ensure the standard mode I2C frequency, fPCLK1 must be at least 2 MHz. To ensure the fast mode I2C

frequency, fPCLK1 must be at least 4 MHz. To ensure the fast mode plus I2C frequency, fPCLK1 must be at least

a multiple of 10 MHz.

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