66 CP9*, CR9*, CT9* Celeron M/Pentium M
Publication No. HRMCP9 Rev. B
•
When using onboard PMC modules don’t forget to add their power
consumption
•
With an onboard hard disk drive please add following values to the +5 V current:
- During power up 0.9 A max.
- In an idle condition 0.13 A typical.
- During read/write access 0.42 A typical
Values are taken from the Fujitsu MHT 2060 AT datasheet
•
With an onboard compact flash drive please add 0.1 A to the +5 V current
•
For keyboard, mouse, etc. please add 0.1 A (typical) to the +5 V current
•
Connectors P1680, P2001, and P4200 provide fused VCC voltage (+5 V). The total
current drawn from this source may not exceed 1.0 A
8.8 Onboard Lithium Battery
8.8.1
Not Powered by the System
BR1225 (50 mAh), estimated life time depending on temperature and power status.
The diagram below shows discharge if board is not powered from the system, i.e. if
battery has to supply all current for the clock circuits.
Figure 8-1 Battery Current Versus Temperature
At temperatures lower than +25 °C use the value at 25 °C. Actually power usage is
lower, which means longer operational lifetime for the battery.
All values were taken at 40 % RH (relative humidity).
Using the values of the diagram above (Battery current versus temperature) lifetime
of the battery can be derived from the diagram below (Battery current versus time).
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
25
35
45
50
55
65
75
Tem p [°C]
L
o
a
d
[
µ
A
]
measured
"+20%"
Содержание CR9 Series
Страница 24: ...24 CP9 CR9 CT9 Celeron M Pentium M Publication No HRMCP9 Rev B Figure 2 2 Handling the CR9 Board ...
Страница 77: ...Publication No HRMCP9 Rev B Transition Module CTM12 77 Figure A 1 CTM12 Component Locations ...
Страница 90: ...90 CP9 CR9 CT9 Celeron M Pentium M Publication No HRMCP9 Rev B Figure B 1 Mount PMC Board to CR9 ...