Data Sheet

ADuCM3027/ADuCM3029

Rev. B | Page 35 of 39

0.47µF

RTC1_SS1

IO

0.1µF

4.7µF

0.0056µF

33Ω

VREF_ADC

ADuCM3027/ADuCM3029/

ADuCM3029-1/ADuCM3029-2

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

VBAT

PAD

GND_ANA

VBAT_DIG2

GND_DIG

VBAT_DIG1

GND_VREFADC

VBAT_ADC

VREF_ADC

VLDO_OUT

VDCDC_OUT

VBAT_ANA2

SYS_LFXTAL_OUT

SYS_LFXTAL_IN

SYS_HFXTAL_OUT

SYS_HFXTAL_IN

VBAT_ANA1

IO

IO

21

13

11

10

7

6

43

4

25

2

44

61

59

60

42

24

26

38

27

28

39

40

23

22

20

19

18

17

16

49

34

8

1

14

45

29

12

9

58

57

41

46

52

51

47

50

5

3

36

35

37

55

54

53

56

31

30

33

32

62

63

15

48

64

ANALOG_IN

IO

P0_00

P0_01

P0_02

P0_03

P1_10

P0_14

P0_11

P1_02

P1_03

P1_04

P1_05

P2_01

P0_13

P0_15

P1_00

P0_14

P2_02

P1_14

p1_13

P1_12

P1_11

P0_08

P0_09

P1_01

P1_15

P2_00

P0_12

P2_11

P1_06

P1_07

P1_08

P1_09

P0_06

P0_07

P0_04

SYS_HWRST

P0_05

P2_10

P2_09

P2_08

P2_07

P2_06

P2_05

P2_04

P2_03

VDCDC_CAP2P

VDCDC_CAP2N

VDCDC_CAP1P

VDCDC_CAP1N

Figure 28. Recommended External Components on VREF_ADC Pin and ADC Input Channel (ADC0_VIN0 Used as Example) when Using the Internal ADC