User's Manual

CHAPTER 1 - M2020 EVALUATION MODULE Serial Interface
4 D2120 EVALUATION KIT QUICK START GUIDE
Serial Interface
Connector P2 provides a flow-controlled serial interface with timing information (using
TX, RX, CTS, and SOF), as described in the Mote Integration Guide, Appendix C.
Serial port settings are 9600 bps, 8 data bits, no parity, 1 stop bit.
Power Supply
The M2020-EVM board is powered by a pair of L91 1.5 V AA lithium batteries (or
equivalent), and comes with a standard double AA battery holder. The M2020-EVM
does not contain a power switch. Units are tested and shipped in deep sleep mode. To
place the device into deep sleep, short pins 1 and 6 on P2, and reset the M2020-EVM.
The status LEDs should remain off, and the device remains asleep until it is reset. To
activate the unit, press reset with pins 1 and 6 unconnected.
Absolute Maximum Ratings
c
Warning: The M2020 Mote is an ESD-sensitive device. Use caution when handling
in order to prevent permanent damage to the device.
Table 1-3. Absolute Maximum Ratings
Parameter Min Max Units Condition
Supply voltage
V
BAT
(V
CC
)2.73.6V
Referenced to GND
Voltage on any pin –0.3 V
CC
+0.3 V Referenced to GND
Digital I/O current
Source
Sink
Total I/O
2
6
24
mA
mA
mA
Storage temperature –40 +85 °C
Operating ambient
temperature
–40 +85 °C