CYALKIT-E02 Solar-Powered BLE Sensor Beacon Reference Design Kit Guide, Doc. No. 002-11317 Rev. *C
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Table 6-2. Pin Description of EZ-BLE PRoC Module
Pin Name
I/O
Description
P0.4
I/O
Connect CN1.9 pin
Extra GPIO to connect Debug Board
P0.6
I/O
Connect CN1.4 pin
SWDIO to program/debug via KitProg
P0.7
I
Connect CN1.3 pin
SWDCLK to program/debug via KitProg
P1.4
I
Connect CN1.7 pin
UART_RX to control the parameter via KitProg
P1.5
O
Connect CN1.8 pin
UART_TX to control the parameter via KitProg
P3.4
O
Connect LED (not mounted)
Extra user LED
P3.5
I
Connect CN1.6 pin
USB detect from Debug Board
P5.0
I/O
Connect U4 of temperature and humidity sensor
SDA for I
2
C connection
P5.1
I/O
Connect U4 of temperature and humidity sensor
SCL for I
2
C connection
XRES
I
Connect CN1.5 pin
XRES to program/debug via KitProg and reset pin
VDD
–
Connect VDD via L1 ferrite bead
Digital power supply input
VDDR
–
Connect VDD via L1 ferrite bead
Radio power supply
GND_1, GND_2
–
Ground connection
P0.5, P1.6, P1.7,
P3.6, P3.7, P4.0,
P4.1
–
Open
Not used
6.1.7 Temperature and Humidity Sensor
The temperature and humidity sensor is a monolithic CMOS IC that integrates sensor elements, an analog-to-digital converter,
signal processing, calibration data, and an I
2
C interface. The EZ-BLE PRoC module controls the sensor IC via the I
2
C
interface. The following is the schematic for the temperature and humidity sensor.