Using the AT85DVK-07 Board
2-20
AT85DVK-07 Development Board User Guide
4391B–MP3–07/07
2.14
Power
Consumption
Measurement
In order to ease the power supply measurement, 4 jumpers are implemented as detailed
in Figure 2-19:
Figure 2-19.
Power Management Unit Implementation
J37
– This jumper allows insertion of a ammeter on VBUS power supply.
– Mass storage power consumption can be monitored using this jumper.
J36
– This jumper allows insertion of a ammeter on AT85C51SND3Bx HV
DD
power
supply.
– The AT85C51SND3Bx HI
DD
power consumption can be monitored using this
jumper.
J38
– This jumper allows insertion of a ammeter on AT85C51SND3Bx LV
DD
power
supply.
– The AT85C51SND3Bx LI
DD
power consumption can be monitored using this
jumper.
J39
– This jumper allows insertion of a ammeter on board V
DD
power supply (LV
DD
or
HVDD depending on power configuration).
– The NF, MMC, LCD… power consumption can be monitored using this jumper.
Note:
In order to remove non significant consumption linked to the led power supply (HV
DD
),
remove SE31 solder strap.
2.15
USB Storage
Device
Connection
A USB storage device can be connected to the AT85DVK-07 Board using the “Mini A to
Receptacle A USB cable” as shown in Figure 2-20.
In order to power the USB storage device, an external 5V controlled VBUS power sup-
ply must be connected to J24 (see Table 2-10) according to Figure 2-21.
The VBUS power supply is controlled by the active-low UVCON signal.
J20
J
3
6
L
E
D
J
3
8
J
3
9
J37
