VIPER Technical Manual

Power and power management

 

 

 

 

Current saving from 5V when processor core is in power saving mode

Processor

Vcore (V)

400MHz

300MHz

200MHz

100MHz

Asleep

 

 

 

 

CCCR=0x241

CCCR=0x321

CCCR=0x221

CCCR=0x121

 

 

 

 

 

 

 

 

 

 

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)

-

-

-

 

 

 

 

 

29mA (308mA)

 

Idle

1.06

-

-

19mA (315mA)

[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.

© 2007 Eurotech Ltd Issue E

76