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Chengdu Ebyte Electronic Technology Co., Ltd
7
9
GND
-
Ground, connecting to power source referential ground
10
nRESET
Input
Reset
(
see CC2640 manual for details
)
11
VDD
-
Power supply: 1.8V ~ 3.8V
12
DIO_5
Input/Output
SLEEP pin, trigger and wake up
13
GND
-
Ground, connect to the power reference ground
14
DIO_6
Input/Output
MRDY pin, trigger serial reception
15
DIO_7
Input/Output
SRDY pin, wake up external MCU
16
DIO_8
Input/Output
Connection, output low level
17
DIO_9
Input/Output
General IO, sensor controller, digital analog
(
see CC2640 manual for
details
)
18
GND
-
Ground electrode, connect to power reference ground
★
Please refer to “CC2640 Datasheet” of TI for pin definition, software drive and protocol
★
4 Circuit design
TMS, TCK, reset, and ground need to be connected between the emulator and the module, and an additional 3.3V
power supply is required for the emulator;
Use USB to UART module to connect with module, module serial port and IO port are multiplexed, users can set
according to their own needs;
Please note that good grounding is required. When there is a large area of grounding, the power supply ripple is
small. Increase the filter capacitor and try to be close to the VCC and GND pins of the module.