SN2X-PRIMER STMicroelectronics, SN2X-PRIMER Datasheet - Page 6

• Manufacturer Part Number: SN2X-PRIMER
• Manufacturer: STMicroelectronics

Specifications of SN2X-PRIMER

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Description of the delivered package
1.3
Caution:
1.4
6/17
Board power supply
The boards are supplied power by connecting a jumper in the 1-2 position
switches SW3 and SW4 on boards MB622 and MB623 respectively.
To reprogram either the SN250 or the SN260, a jumper must be placed in the 2-3 position
(Figure
provide power to the SIF connectors used to download software.
Please take care that in order to correctly and efficiently recharge the boards’ batteries, the
USB cable must remain plugged in for at least 12 hours.
Power-save mode
The SN2X-PRIMER evaluation kit executes a power save mechanism for the Coordinator
and the Router in order to increase the battery lifetime. If the Coordinator is not used for
approximately 5 minutes, it sends a special broadcast sleep message (application defined)
to all Routers to enter Power-save mode switching off the LCD, LEDs, and disabling the RF
circuit. In this case, all messages sent to the Coordinator are lost.
The Router also automatically enters Power-save mode if it does not receive any message
from the Coordinator or if the user does not press any buttons on the board for
approximately 5 minutes. In this case, the Router switches OFF all LEDs, and both the
SN260 and the ST7Lite39 are put in Power-save mode.
The Coordinator and the Router wake up when the user presses switches SW1 and SW2 on
the Coordinator and Router boards, respectively.
The Coordinator and the Routers maintain all network parameters; the user does not have
to form a new network.
Figure 3.
4) on switches SW3 and SW4 for the MB622 and MB623 respectively. This will
1
2
3
Switch in 1-2 position
Figure 4.
Switch in 2-3 position
1
2
3
(Figure
3) on
UM0450