Using the AT89RFD-08 Board
2-8
AT89RFD-08 Hardware User Guide
4382E–MP3–05/06
Table 2-2.
Power supply configuration
The direct power supply voltage must be adjusted with the power supply source. Input
voltage on this connector must be included between 2.7 and 3.3V.
This power supply input is
NOT protected
against polarization inversion.
2.2.3
Power Supply
Source Connection
For power supply source connection, there is only the need for a 2 points female
connector.
Figure 2-4.
EXT PWR Female Connector / Cable for 9V Battery
2.2.4
“POWER“ LED
The power LED (“PWR”) is always on when power is applied to the board regardless of
power supply configuration.
Figure 2-5.
“POWER” LED
Power supply source
J14(*)
Min
Max
Unit
External Power Supply
closed
2.7
3.3
V
+
-
+
-
+
-
+
-