User manual

Power and power management
Issue E 61
External peripheral devices include CF+ card (1.5W max), two USB devices (5W max),
add-on PC/104 cards (5W max), wireless modem (8.5W peak), LCD and Inverter (4W
max), GPS module (50mW max), ZigBee module (30mW max), SDIO (350mW max) and
Quick Capture camera (50mW max).
The table below gives examples of power drawn by specific external peripheral devices:
Device Part number Condition Power (mW)
Sleep 1
64MB Sandisk
CompactFlash
SDCFJ-64
Writing consistently 220
Idle (listening) 50 Socket WiFi 802.11b
SDIO
WL6200-480
Transmitting 925
Inserted (no access) 375 64MB FlashDio USB
memory stick
FDU100A
Reading consistently 605
LCD and backlight on 3250 NEC 5.5" LCD +
Inverter
NL3224BC35-20
+ 55PW131
LCD on and backlight off 825
Data mode GPRS 900 2100 GSM/GPRS module Siemens MC39i
Power down mode 0.18
Continuous mode 100 GPS module Fastrax iTRAX03/08
Sleep mode 0.06
Rx 25 ZigBee module Eurotech ZM1
Power down 0.1
VGA CMOS sensor
module
Dialog DA3520 Active 50
When PXA270 is placed in deep-sleep mode, the power to all the peripherals
(on-board and external) is switched off by SYS_EN signal of the PXA270.