EFM32G-DK3550【PDF 329/467 页】KIT DEVELOPMENT EFM32 GECKO

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...the world's most energy friendly microcontrollers

Bit

Name

Reset

Access

Description

31:30

Reserved

To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)

29:28

CSRESSEL

0x0

RW

Capacitive Sense Mode Internal Resistor Select

These bits select the resistance value for the internal capacitive sense resistor. Resulting actual resistor values are given in the

device datasheets.

Value

0

1

2

3

Mode

RES0

RES1

RES2

RES3

Description

Internal capacitive sense resistor value 0

Internal capacitive sense resistor value 1

Internal capacitive sense resistor value 2

Internal capacitive sense resistor value 3

27:25

Reserved

To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)

24

CSRESEN

0

RW

Capacitive Sense Mode Internal Resistor Enable

Enable/disable the internal capacitive sense resistor.

23:17

Reserved

To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)

16

LPREF

1

RW

Low Power Reference Mode

Enable low power mode for VDD and bandgap references.

Value

0

1

Description

Low power mode disabled

Low power mode enabled

15:14

Reserved

To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)

13:8

VDDLEVEL

0x00

RW

VDD Reference Level

Select scaling factor for VDD reference level.V DD_SCALED = V DD ×VDDLEVEL/63

7:4

NEGSEL

0x8

RW

Negative Input Select

Select negative input.

Value

0

1

2

3

4

5

6

7

8

9

10

11

Mode

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

1V25

2V5

VDD

CAPSENSE

Description

Channel 0 as negative input

Channel 1 as negative input

Channel 2 as negative input

Channel 3 as negative input

Channel 4 as negative input

Channel 5 as negative input

Channel 6 as negative input

Channel 7 as negative input

1.25 V as negative input

2.5 V as negative input

Scaled VDD as negative input

Capacitive sense mode

3

Reserved

To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)

2:0

POSSEL

0x0

RW

Positive Input Select

Select positive input.

Value

0

1

2

3

4

5

6

7

Mode

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

Description

Channel 0 as positive input

Channel 1 as positive input

Channel 2 as positive input

Channel 3 as positive input

Channel 4 as positive input

Channel 5 as positive input

Channel 6 as positive input

Channel 7 as positive input

2011-04-12 - d0001_Rev1.10

329

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