Arcom VIPER - Page 53

VIPER Power and power management
On board peripheral device power estimations
Use the table below to estimate power savings from on board peripheral devices.
Ethernet
Power down
COM1 – COM5
Sleep Mode
AC’97 Codec
shutdown
Current Saving
(mA)
Power Saving
(mW)
- - Yes 54 270
- Yes - 59 295
- Yes Yes 113 565
Yes - - 123 615
Yes - Yes 177 885
Yes Yes - 182 910
Yes Yes Yes 236 1180
External peripheral device power estimations
Take into account any external peripherals by an application, such as:
USB devices: Keyboard, Memory Stick, and Mouse. •
•
•
CompactFLASH socket: CompactFLASH memory, or Microdrive
Flat Panel Display: TFT logic + backlight, STN logic + backlight + bias voltage
The table give examples of addition current / power from external peripheral devices.
Device Part Number Condition
Additional
Current (mA)
Additional
Power (mW)
Inserted, (no access) 1 5
32MB Sandisk
CompactFLASH
SDCFB-32-101-80
Reading consistently 48 240
Inserted, (no access) 75 375
64MB FlashDio™
USB memory
stick
FDU100A
Reading consistently 121 605
LCD and backlight on 650 3250
NEC 5.5” LCD +
Inverter (as used
with VIPER-ICE)
NL3224BC35-20
+ 55PW131
LCD on and backlight off 291 1455
For devices using the 3.3V supply from the CompactFLASH socket and FPD
logic supply, use 92% as the regulator efficiency.
© 2004 Arcom Issue H 53