SWRU125 Page 6
5.7 Light sensor
A light dependent resistor (LDR) measures light level and gives an analog signal that is
measured by the CC2430 A/D converter. The light sensor resistance ranges from 5K
Ω
(light)
to 20M
Ω
(dark).
5.8 I/O connectors
The I/O connectors bring out all the signals from CC2430. These connectors allow easy
access to all CC2430 I/O pins. External circuitry can be connected to these connectors for
prototyping.
Pin Function
1 VDD
2 VDD_SW_CONTROLLED
1
3 P0_0/LDR
4 RESET_N
5 P0_1/BUTTON
PUSH
6 P1_7/SO/MISO/UART_RD
7 P0_2/EE_SDA
8 P1_6/SI/MOSI/UART_TD
9 P0_3/EE_SCL
10 P1_5/SCLK/RTS
11 P2_1/DD
12 P1_4/CSN/SS/CTS
13 P2_2/DC
14 P2_0/JOY
PUSH
15 P0_6/JOY
16 P1_2/VDD_SW_CTRL
17 P0_7/POT
18 P1_1/LED2
19 P1_0/LED1
20 GND
Table 1: I/O connector A (P6) pin-out
Pin Function
1 P1_3/GPIO
2 DC_JACK_PWR
3 P0_4/ACC_X
4 VDD
5 P0_5/ACC_Y
6 GND
Table 2: I/O connector B (P7) pin-out
1
VDD_SW_CONTROLLED is controlled by the signal named VDD_SW_CTRL