GD32H757VMT7 datasheet(108/151 Pages) GIGADEVICE

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GD32H757xx Datasheet

107

Speed Symbol

Parameter

Conditions

Min

Typ

Max Unit

level fall time and

output low to high

level rise time

1.71 V ≤ VDD ≤ 2.5 V, CL = 30 pF

—

2.8

—

1.71 V ≤ VDD ≤ 2.5 V, CL = 10 pF

—

1.8

—

tr/tf(2)

Output high to low

level fall time and

output low to high

level rise time

1.71 V ≤ VDD ≤ 2.5 V, CL = 50 pF

—

3.5

—

1.71 V ≤ VDD ≤ 2.5 V, CL = 30 pF

—

2.6

—

1.71 V ≤ VDD ≤ 2.5 V, CL = 10 pF

—

1.6

—

(1)

The maximum frequency is defined with the following conditions: (tr+tf) ≤ 2/3 T Skew ≤ 1/20 T 45% < Duty

cycle < 55%

(2)

The fall and rise times are defined between 90% and 10% and between 10% and 90% of the output waveform,

respectively.

(3)

Value guaranteed by characterization, not 100% tested in production.

(4)

The data is for reference only, and the specific values are related to PCB Layout.

4.13.

14-bit ADC characteristics

Table 4-32. 14-bit ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA(1)

Operating

voltage

—

1.8

—

3.6

VREFP(2)(3)

Positive

Reference

Voltage

VDDA ≥ 2.4 V

2.4

—

VDDA

VDDA < 2.4 V

1.8

—

VDDA

VREFN(2)

Negative

Reference

Voltage

—

VSSA

fADC(1)

ADC clock

2.7 V ≤ VDDA ≤ 3.6 V

2.7 V ≤ VREFP ≤ VDDA

0.1

—

MHz

2.4 V ≤ VDDA ≤ 2.7 V

2.4 V ≤ VREFP ≤ VDDA

0.1

—

MHz

1.8 V ≤ VDDA ≤ 2.4 V

1.8 V ≤ VREFP ≤ VDDA

0.1

—

MHz

fS(1)

Sampling rate

Resolution =

14 bits

2.7 V ≤ VDDA ≤ 3.6 V

2.7 V ≤ VREFP ≤VDDA

fADC =

72 MHz

SMP

= 3.5

—

MSPS

2.4 V ≤ VDDA ≤ 2.7 V

2.4 V ≤ VREFP ≤ VDDA

fADC =

54 MHz

SMP

= 3.5

—

1.8 V ≤ VDDA ≤ 2.4 V

1.8 V ≤ VREFP ≤ VDDA

fADC =

36 MHz

SMP

= 3.5

—

Resolution =

12 bits

2.7 V ≤ VDDA ≤ 3.6 V

2.7 V ≤ VREFP ≤ VDDA

fADC =

72 MHz

SMP

= 3.5

—

4.5

2.4 V ≤ VDDA ≤ 2.7 V

2.4 V ≤ VREFP ≤ VDDA

fADC =

54 MHz

SMP

= 3.5

—

3.37

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