AX−SIP−SFEU, AX−SIP−SFEU−API

www.onsemi.com

4

A = analog input or input/output

I = digital input signal

O = digital output signal

PU = pull−up

I/O = digital input/output signal

N = not to be connected

P = power or ground

PD = pull−down

All digital inputs are Schmitt trigger inputs, digital input

and output levels are LVCMOS/LVTTL compatible. Pins

GPIO[3:0] and GPIO[13:12] must not be driven above

VDD_IO, all other digital inputs are 5 V tolerant. All GPIO

pins and UARTRX start up as input with pull−up. For

explanations on how to use the GPIO pins, see chapter “AT

Commands”.

0 = pin drives low

1 = pin drives high

Z = pin is high impedance input

U = pin is input with pull−up

A = pin is analog input

T = pin is driven by clock or DAC

Table 2.

Pin

Possible GPIO Modes

GPIO0

0, 1, Z, U, A, T

GPIO1

0, 1, Z, U, A

GPIO2

0, 1, Z, U, A

GPIO3

0, 1, Z, U, A

GPIO4

0, 1, Z, U, T

GPIO5

0, 1, Z, U

GPIO6

0, 1, Z, U

GPIO7

0, 1, Z, U

GPIO8

0, 1, Z, U

GPIO9

0, 1, Z, U

GPIO10

0, 1, Z, U

GPIO11

0, 1, Z, U

GPIO12

0, 1, Z, U, A

GPIO13

0, 1, Z, U, A

GPIO14

0, 1, Z, U

Pinout Drawing

Figure 2. Pinout Drawing (Top View)

VIO

GND

RESET_N

NC/DBG_EN

TXLED/DBG_CLK

RXLED/DBG_DATA

UARTRX

UARTTX

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

AX−SIP−SFEU / AX−SIP−SFEU−API

1

2

3

4

5

6

7

8

9

10

11

12

131415

16

17

18

19

GND

GND

ANT

GND

NC

GND

NC

NC

Pins 22−24 have different functionalities in

AT command and API versions, so for these

pins AX−SIP−SFEU/AX−SIP−SFEU−API

explanations are shown respectively.