Eurotech Appliances VIPER / VIPER-LITE PXA255 - Manual (Page 76)

VIPER Technical Manual Power and power management
© 2007 Eurotech Ltd Issue E 76
Current saving from 5V when processor core is in power saving mode
Processor Vcore (V)
400MHz
CCCR=0x241
300MHz
CCCR=0x321
200MHz
CCCR=0x221
100MHz
CCCR=0x121
Asleep
Active 1.29 -99mA ±20mA - - - -
Active 1.1 - -46mA ±20mA - - -
Active 1.06 - - -32mA ±20mA -25mA ±20mA -
Idle 1.29
9mA (325mA)
[Win CE default]
- - - -
Idle 1.1 - 19mA (316mA) - - -
Idle 1.06 - - 19mA (315mA)
29mA (308mA)
[Redboot /
VxWorks default]
-
Asleep 0 - - - -
54mA
(271mA)
Current figures when the microprocessor is active were taken with the following
load conditions: calculating checksums of two files (first file: 1.1MB and second
file: 0.5MB), and copying two 256kB files.
When the microprocessor is asleep the PC/104 and AC97’ Codec clocks are
shutdown.