AVDD1   到 6

28,27,24,29,21,31

Power   (analog)

2-V–3.6-V  analog power-supply   connection

DCOUPL

40

Power   (digital)

1.8-V   digital power-supply decoupling. Do not use for supplying external circuits.

DVDD1

39

Power   (digital)

2-V–3.6-V  analog power-supply   connection

DVDD2

10

Power   (digital)

2-V–3.6-V  analog power-supply   connection

GND

-

Ground

The   ground pad must be connected to a solid ground plane.

GND

1，2，3，4

Unused   pins

Connect   to GND

P0_0

19

Digital   I/O

Port 0.0

P0_1

18

Digital   I/O

Port 0.1

P0_2

17

Digital   I/O

Port 0.2

P0_3

16

Digital   I/O

Port 0.3

P0_4

15

Digital   I/O

Port 0.4

P0_5

14

Digital   I/O

Port 0.5

P0_6

13

Digital   I/O

Port 0.6

P0_7

12

Digital   I/O

Port 0.7

P1_0

11

Digital   I/O

Port 1.0-20-mA    drive capability

P1_1

9

Digital   I/O

Port 1.1-20-mA    drive capability

P1_2

8

Digital   I/O

Port 1.2

P1_3

7

Digital   I/O

Port 1.3

P1_4

6

Digital   I/O

Port 1.4

P1_5

5

Digital   I/O

Port 1.5

P1_6

38

Digital   I/O

Port 1.6

P1_7

37

Digital   I/O

Port 1.7

P2_0

36

Digital   I/O

Port 2.0

P2_1

35

Digital   I/O

Port 2.1

P2_2

34

Digital   I/O

Port 2.2

P2_3/XOSC32K_Q2

33

Digital   I/O,

Port 2.3/32.768   kHz XOSC

P2_4/XOSC32K_Q1

32

Digital   I/O

Port 2.4/32.768   kHz XOSC

RBIAS

30

Analog   I/O

External   precision bias resistor for reference current

RESET_N

20

Digital   input

Reset,   active-low

RF_N

26

RF   I/O

Negative   RF input signal to LNA during RX
  Negative RF output signal from PA during TX

RF_P

25

RF   I/O

Negative   RF input signal to LNA during RX
  Negative RF output signal from PA during TX

XOSC_Q1

22

Analog   I/O

32-MHz   crystal oscillator pin 1 or external-clock input

XOSC_Q2

23

Analog   I/O

32-MHz   crystal oscillator pin 2