User Manual

MPR/MIB User’s Manual
Wireless Sensor Networks
Doc. # 7430-0021-06 Rev. A Page 36
11.3 MICA2DOT Expansion Connector
The interface to the MPR500 is through a series of 19 pins Elpacko spaced around the
circumference of the MPR5x0 Mote. (They represent a subset of the pins available on the
MPR5x0.) They include a set of power control pins, ADC channels, power, ground, some
general purpose digital IO, and the serial programming port. For applications with more digital
IO, the ADC pins can be reconfigured as digital input/output but not both.
M WARNING: The TP12 (SPI_CK) pin is controlled by the Radio. In the majority of applications it
should not be used. It is also used for programming the processor.
Loc. x y Pin Name Description
1
-0.290 0.315
TP1 GND Ground
2
-0.370 0.230
TP2 ADC7 ADC Channel 7
3
-0.420 0.120
TP3 ADC6 ADC Channel 6
4
-0.430 0.000
TP4 ADC5 ADC Channel 5
5
-0.420 -0.120
TP5 ADC4 ADC Channel 4
6
-0.335 -0.275
TP6 VCC Voltage (battery)
7
-0.225 -0.375
TP7 PW1 GPIO/PWM
8
-0.120 -0.420
TP8 PW0 GPIO/PWM
9
0.000 -0.430
TP9 UART_TXD UART Transmit
10
0.120 -0.420
TP10 UART_RXD UART Receive
11
0.225 -0.375
TP11 RESETN
µProcessor Reset
12
0.335 -0.275
TP12 SPI_CLK Radio Clock
13
0.420 -0.120
TP13 ADC3 ADC Channel 3
14
0.420 0.120
TP14 ADC2 ADC Channel 2
15
0.370 0.230
TP15 PWM1B GPIO
16
0.290 0.315
TP18 GND Ground
17
0.100 0.420
TP19 INT0 GPIO
18
0.000 0.430
TP20 INT1 GPIO
19
-0.100 0.420
TP21 THERM_PWR GPIO
Figure 0-1. MICA2DOT pin locations and sensor interface description. The locations of the pins
are taken relative to the geometric center of the board. The board has a diameter of 0.988
inches. Note the “TP” under the “Pin” column means “test point.”
y
x
Loc. 1
Loc. 19
Loc. 2