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DIGITAL-LOGIC AG MSB900/L Detailed Technical Manual V1.0
23
2.11. Battery-Lifetime
Battery specs:
Lowest temp.
-40°C
Nominal temp.
+20°C
Highest temp.
+85°C
Manufacturer: pba
Type: ER10280
Capacity versus Temp: 10uA 420mAh 400mAh 350mAh
Voltage versus Temp. 10uA 3.6V 3.6V Ca. 3.6V
Nominal values: 3.6V / 400mAh @ 0.5mA / -55°C...~+85°C
Information taken from the datasheet of ER10280
PRODUCT: Temperature
°C
Battery voltage
V
VCC (+5)
switched ON
µA
VCC (+5V)
switched off
µA
Battery current: +25°C 3.6 < 1 < 3
Battery-Lifetime: +25°C >3.5 years >3.5 year
2.11.1. External battery assembling (for the MSB900L):
On the MSB900L board, an external battery can be connected to J3. Attach the battery ground to pin 2.
If the customer wants to connect an external battery, then some precautions have to be taken:
The battery is prohibited from charging. Do not use a rechargeable battery!
The RTC device defines a voltage level of 3.0-3.6V, so use an external battery within this range (inclusive of
the diode which is pre-assembled onboard).
3. BUS SIGNALS
3.1. Addressing PCI Devices
3.1.1. MSB900 and MSB900L
DEVICE IDSEL
PIRQ #REG
#GNT
Remarks
SLOT 1 AD20 A / B / C / D 3 3 For additional cards (peripheral boards)
Onboard used:
LAN A AD28 C 1 1 Onboard device
LAN B AD29 A 4 4 Onboard device
Mini-PCI AD27 A / B 5 5 Optional device
CPU AD11 A 2 2 Onboard device