No.
|
Name
|
Type
|
Correspon
ding to the pin number of CC3235S
|
Pin application
|
|
1
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
2
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
3
|
INDICATE
|
-
|
1
|
Abnormal indication, abnormal: high, normal: low. (GPIO10 of CC3235)
|
|
4
|
S_LINK
|
-
|
2
|
Socket connection indication, connect: high, disconnect: low. (GPIO11 of CC3235)
|
|
5
|
GPIO14
|
I/O
|
5
|
General IO port
|
|
6
|
GPIO15
|
I/O
|
6
|
General IO port
|
|
7
|
GPIO16
|
I/O
|
7
|
General IO port
|
|
8
|
GPIO17
|
I/O
|
8
|
General IO port
|
|
9
|
GPIO12
|
I/O
|
3
|
General IO port
|
|
10
|
GPIO13
|
I/O
|
4
|
WAKEUP wake-up pin
|
|
11
|
GPIO22
|
I/O
|
15
|
General IO port
|
|
12
|
JTAG_TDI
|
I/O
|
16
|
JTAG emulation pin, JTAG TDI input; if not used, don’t connect
|
|
13
|
FLASH_SPI_MISO
|
I
|
-
|
External serial FLASH programming interface: SPI data input
|
|
14
|
FLASH_SPI_nCS_IN
|
I
|
-
|
External serial FLASH programming interface: SPI chip selection (active low)
|
|
15
|
FLASH_SPI_CLK
|
I
|
-
|
External serial FLASH programming interface: SPI clock
|
|
16
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
17
|
FLASH_SPI_MOSI
|
O
|
-
|
External serial FLASH programming interface: SPI data output
|
|
18
|
JTAG_TDO
|
I/O
|
17
|
JTAG emulation pin, JTAG TDO output; if not used, don’t connect
|
|
19
|
GPIO28
|
I/O
|
18
|
General IO port
|
|
20
|
NC
|
I/O
|
-
|
No pins connected, users don’t need to care
|
|
21
|
JTAG_TCK
|
I/O
|
19
|
JTAG emulation pin, JTAG TCK input; if not used, no connection is required; the module has a built-in 100K pull-down resistor.
|
|
22
|
JTAG_TMS
|
I/O
|
20
|
JTAG emulation pin, JTAG TMS input; don’t connect if not used.
|
|
23
|
SOP2
|
-
|
21
|
The SOP2 pin has a built-in 100K pull-down resistor; when in use, an external pull-up resistor 10K is required to pull the pin level high.
|
|
24
|
SOP1
|
-
|
34
|
The SOP1 pin has a built-in 100K pull-down resistor; when in use, an external pull-up resistor 10K is required to pull the pin level high
|
|
25
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
26
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
27
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
28
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
29
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
30
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
31
|
RF_ABG
|
I/O
|
31
|
2.4G/5G RF input and output
|
|
32
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
33
|
NC
|
-
|
-
|
No pins connected, users don’t need to care
|
|
34
|
SOP0
|
-
|
35
|
The SOP0 pin has a built-in 100K pull-down resistor; when in use, an external pull-up resistor 10K is required to pull the pin level high.
|
|
35
|
nRESET
|
I
|
32
|
35rd and 36rd,the same
|
|
36
|
VBAT_RESET
|
-
|
-
|
The nRESET pin has a built-in 100K pull-up resistor to the VBAT_RESET pin. Note: VBAT_RESET is not connected to VBAT1 or VBAT2 inside the module.
The following connection methods are recommended:
1.Only when nRESET will be in a defined state under all operating conditions, connect nRESET to a switch, external controller, or host.Keep VBAT_RESET unconnected at this time to save power.
2.If nRESET cannot be in a defined state under all operating conditions,VBAT RESET must be connected to the main power supply (VBAT1 and VBAT2) of the module. Due to the internal pull-up resistor, the leakage current is expected to be (3.3 V/ 100 kΩ) mA.
|
|
37
|
VBAT1
|
Power
|
37,39
|
The module power supply is positive reference, the voltage range is 2.3 V to 3.6 V. Note: The module is not internally connected to VBAT2, so it needs to be short-connected to Pin 40 VBAT2 when in use; see the recommended connection diagram in Chapter 4 for details.
|
|
38
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
39
|
NC
|
-
|
-
|
No pins connected, users don’t need to care
|
|
40
|
VBAT2
|
Power
|
10,44,54
|
The module power supply is positive reference, the voltage range is 2.3 V to 3.6 V. Note: The module is not internally connected to VBAT1, so it needs to be short-connected to Pin 37 VBAT1 when in use; see the recommended connection diagram in Chapter 4 for details.
|
|
41
|
NC
|
-
|
-
|
No pins connected, users don’t need to care
|
|
42
|
GPIO30
|
I/O
|
53
|
General IO port
|
|
43
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
44
|
GPIO0
|
I/O
|
50
|
General IO port
|
|
45
|
NC
|
-
|
-
|
No pins connected, users don’t need to care
|
|
46
|
TXD
|
-
|
55
|
TTL serial port output, connected to the external RXD input pin (GPIO1 of CC3235)
|
|
47
|
RXD
|
-
|
57
|
TTL serial port input, connected to the external TXD output pin (GPIO2 of CC3235)
|
|
48
|
GPIO3
|
I/O
|
58
|
General IO port
|
|
49
|
GPIO4
|
I/O
|
59
|
General IO port
|
|
50
|
GPIO5
|
I/O
|
60
|
General IO port
|
|
51
|
GPIO6
|
I/O
|
61
|
General IO port
|
|
52
|
GPIO7
|
I/O
|
62
|
General IO port
|
|
53
|
GPIO8
|
I/O
|
63
|
General IO port
|
|
54
|
W_LINK
|
-
|
64
|
Wi-Fi connection indication, connect: high, disconnect: low. (GPIO9 of CC3235)
|
|
55
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
56
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
57
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
58
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
59
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
60
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
61
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
62
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
|
63
|
GND
|
-
|
-
|
Ground wire, connected to the power reference ground
|
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