Pin#

Signal

I/O

Description

1

P0.13

I/O

GPIO

2

IAP_SEL

I

Software updating

3

NMEA_TX

O

Standard NMEA output

4

NMEA_RX

I

Standard NMEA input

5

STDBY

I

Status of the PL2031

6

Reset

I

Reset PL2031

7

PWRCTRL

I

Dedicated power input

8

GND

G

Power ground

9

NVDD

I

Power supply

10

P0.14

I/O

GPIO

11

SPI_SS

I

SPI slave select

12

SPI_CLK

I

SPI clock

13

P1.1

I/O

GPIO

14

SPI_MISO

I

SPI input

15

SPI_MOSI

O

SPI output

16

WAKEUP/P0.15

I

Wakeup PL2031

17

GND

G

Power ground

18

RF_IN

I

Antenna input

19

GND

G

Power ground

20

JTDI

I

JTAG data input

21

JTDO

O

JTAG data output

22

JTMS

I

JTAG mode select

23

JTCK

I

JTAG clock

24

JTRSTN

I

JTAG reset

25

GND

G

Power ground