CC3100

SWAS031D – JUNE 2013 – REVISED FEBRUARY 2015

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Table 3-1. Pin Attributes

PIN

DEFAULT FUNCTION

STATE AT RESET

I/O TYPE

DESCRIPTION

AND HIBERNATE

1

NC

Hi-Z

N/A

Unused; leave unconnected.

2

nHIB

Hi-Z

I

Hibernate signal input to the NWP (active low).

This is connected to the MCU GPIO. If the

GPIO from the MCU can float while the MCU

enters low power, consider adding a pull-up

resistor on the board to avoid floating.

3

Reserved

Hi-Z

NA

Reserved for future use

4

FORCE_AP

Hi-Z

I

For forced AP mode, pull to high on the board

using 100k resistor. Otherwise, pull down to

5

HOST_SPI_CLK

Hi-Z

I

Host interface SPI clock

6

HOST_SPI_MOSI

Hi-Z

I

Host interface SPI data input

7

HOST_SPI_MISO

Hi-Z

O

Host interface SPI data output

8

HOST_SPI_nCS

Hi-Z

I

Host interface SPI chip select (active low)

9

VDD_DIG1

Hi-Z

Power

Digital core supply (1.2 V)

10

VIN_IO1

Hi-Z

Power

I/O supply

11

FLASH_SPI_CLK

Hi-Z

O

Serial flash interface: SPI clock

12

FLASH_SPI_MOSI

Hi-Z

O

Serial flash interface: SPI data out

13

FLASH _SPI_MISO

Hi-Z

I

Serial flash interface: SPI data in

(active high)

14

FLASH _SPI_nCS

Hi-Z

O

Serial flash interface: SPI chip select (active

low)

15

HOST_INTR

Hi-Z

O

Interrupt output (active high)

16

NC

Hi-Z

N/A

Unused; leave unconnected.

17

NC

Hi-Z

N/A

Unused; leave unconnected.

18

NC

Hi-Z

N/A

Unused; leave unconnected.

19

Reserved

Hi-Z

N/A

Connect 100K pull-down to ground.

20

NC

Hi-Z

N/A

Unused; leave unconnected.

21

SOP2/TCXO_EN

Hi-Z

O

Enable signal for external TCXO. Add 10k

pulldown to ground.

22

WLAN_XTAL_N

Hi-Z

Analog

Connect the WLAN 40-MHz XTAL here.

23

WLAN_XTAL_P

Hi-Z

Analog

Connect the WLAN 40-MHz XTAL here.

24

VDD_PLL

Hi-Z

Power

Internal PLL power supply (1.4 V nominal)

25

LDO_IN2

Hi-Z

Power

Input to internal LDO

26

NC

Hi-Z

N/A

Unused; leave unconnected.

27

NC

Hi-Z

N/A

Unused; leave unconnected.

28

NC

Hi-Z

N/A

Unused; leave unconnected.

29

Reserved

Hi-Z

O

Reserved for future use

30

Reserved

Hi-Z

O

Reserved for future use

31

RF_BG

Hi-Z

RF

2.4-GHz RF TX/RX

32

nRESET

Hi-Z

I

RESET input for the device. Active low input.

Use RC circuit (100k || 0.1 µF) for power on

reset.

33

VDD_PA_IN

Hi-Z

Power

Power supply for the RF power amplifier (PA)

34

SOP1

Hi-Z

N/A

Add 100K pulldown to ground.

35

SOP0

Hi-Z

N/A

Add 100K pulldown to ground.

36

LDO_IN1

Hi-Z

Power

Input to internal LDO

37

VIN_DCDC_ANA

Hi-Z

Power

Power supply for the DC-DC converter for

analog section

(1)

Using a configuration file stored on flash, the vendor can optionally block any possibility of bringing up AP using the FORCE_AP pin.

6

Terminal Configuration and Functions

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