Chipcon AS
SmartRF
®
CC2420DBK Demonstration Board Kit User Manual
(rev. 1.3) 2004-11-03 Page 9/ 52
Name Connector
P3
Atmega12
8
TOSC1 (PG4)
Pin 9
Pin 19
TOSC2 (PG3)
Pin 7
Pin 18
Table 1, Low power mode signal
To demonstrate an application using the power down mode:
1. Apply 4x 1.5 AA batteries with a battery clip to the battery connector.
2. The library macros will be made available on how to set the ATmega128L into the
various power mode that can be applied to minimize the current draw on CC2420DB.
3. Apply the joystick switch as the external interrupt to wake up the ATmega128L to idle
mode and run an application.
CC2420DB temperature range
The CC2420DB can support a temperature range of -30
˚
C to +85
˚
C limited by the crystal
tolerance and the CC2420 temperature range.
Jumper settings for demonstration board control
The CC2420DB demonstration board has three default jumper settings for proper operation.
Figure 5 depicts the placement of the three jumpers J1, J2 and J3. They are mounted on
connector P9. Please see CC2420DB schematics page 1 for more details.
Jumper Purpose
Comments
J1
To apply power of 3.3 volt to
the circuitry on the PCB
board
An option can be to remove
the jumper and connect an
ampere meter in series to
measure current
consumption
J2
To apply power of 3.3 volt to
the potentiometer and
temperature sensor on the
PCB board
Can be removed to
disconnect the devices if not
used, to decrease current
consumption
J3
To always have the RS-232
driver enabled, hence the
driver is forced on
This jumper can be
disconnected and instead
controlled by software if
desired
Table 2 Jumpers explanation
