13
SWRS224A – FEBRUARY 2019 – REVISED AUGUST 2019
Product Folder Links:
Terminal Configuration and Functions
Copyright © 2019, Texas Instruments Incorporated
Table 4-1. Module Pin Descriptions
MODULE PIN
TYPE
CC3235 DEVICE
PIN NO.
MODULE PIN DESCRIPTION
NO.
NAME
1
GND
–
–
Ground
2
GND
–
–
Ground
3
GPIO10
I/O
1
4
GPIO11
I/O
2
5
GPIO14
I/O
5
6
GPIO15
I/O
6
7
GPIO16
I/O
7
8
GPIO17
I/O
8
9
GPIO12
I/O
3
10
GPIO13
I/O
4
11
GPIO22
I/O
15
12
JTAG_TDI
I/O
16
JTAG TDI input. Leave unconnected if not used on product
13
FLASH_SPI_MISO
I
–
External Serial Flash Programming: SPI data in
14
FLASH_SPI_nCS_IN
I
–
External Serial Flash Programming: SPI chip select (active low)
15
FLASH_SPI_CLK
I
–
External Serial Flash Programming: SPI clock
16
GND
–
–
Ground
17
FLASH_SPI_MOSI
O
–
External Serial Flash Programming: SPI data out
18
JTAG_TDO
I/O
17
JTAG TDO output. Leave unconnected if not used on product
19
GPIO28
I/O
18
21
JTAG_TCK
I/O
19
JTAG TCK input. Leave unconnected if not used on product.
An internal 100 k
Ω
pull down resistor is tied to this pin.
22
JTAG_TMS
I/O
20
JTAG TMS input. Leave unconnected if not used on product.
23
SOP2
–
21
An internal 100 k
Ω
pull down resistor is tied to this SOP pin. An
external 10 k
Ω
resistor is required to pull this pin high. See
for SOP[2:0] configuration modes.
24
SOP1
–
34
An internal 100 k
Ω
pull down resistor is tied to this SOP pin. An
external 10 k
Ω
resistor is required to pull this pin high. See
for SOP[2:0] configuration modes.
25
GND
–
–
Ground
26
GND
–
–
Ground
27
GND
–
–
Ground
28
GND
–
–
Ground
29
GND
–
–
Ground
30
GND
–
–
Ground
31
RF_ABG
I/O
31
2.4 GHz and 5 GHz RF input/output
32
GND
–
–
Ground
34
SOP0
–
35
An internal 100 k
Ω
pull down resistor is tied to this SOP pin. An
external 10 k
Ω
resistor is required to pull this pin high. See
for SOP[2:0] configuration modes.
35
nRESET
I
32
There is an internal, 100 k
Ω
, pull-up resistor option from the
nRESET pin to VBAT_RESET. Note: VBAT_RESET is not
connected to VBAT1 or VBAT2 within the module. The following
connection schemes are recommended:
•
Connect nRESET to a switch, external controller, or host,
only if nRESET will be in a defined state under all operating
conditions. Leave VBAT_RESET unconnected to save
power.
•
If nRESET cannot be in a defined state under all operating
conditions, connect VBAT_RESET to the main module
power supply (VBAT1 and VBAT2). Due to the internal pull-
up resistor a leakage current of 3.3 V / 100 k
Ω
is expected.
36
VBAT_RESET
–
37