User`s manual

DIGITAL-LOGIC AG MSMP5 / P3 SEN/SEV Manual V1.6A
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4.5.2 Battery backed clock (RTC)
An AT compatible date/time clock is located within the chipset. The device also contains a CMOS static
RAM, compatible with that in standard ATs. System configuration data is normally stored in the clock chip's
CMOS RAM in a manner consistent with the convention used in other AT compatible computers.
Connect an external Lithium battery to J24. Make sure to use the correct polarity!
The battery-backed clock can be set by using the DIGITAL-LOGIC AG SETUP at boot-time.
4.5.2.1 Battery-Lifetime of Version V3.3 - V3.7c
Battery specs: Lowest temp.
-40°C
Nominal temp.
+20°C
Highest temp.
+85°C
Manufacturer: PANASONIC
Type: CR2032
Capacity versus temp. : 5µA 48mAh 48mAh 48mAh
Voltage versus temp. : 5µA 2.9V 3.0V 3.1V
Nominal values: 3.0V / 48mAh / -40°C...+85°C
Information taken from the datasheet of PANASONIC CR2032
PRODUCT: Temperatur
°C
Battery voltage
V
VCC (+5V)
switched ON
µA
VCC (+5V)
Switched OFF
µA
MSMP5/3 version 3.7c
Battery current: +25°C 2.9 0 2.58
-40°C 2.8 0 1.89
+85°C 2.93 0 9.24
Battery-Lifetime: +25°C >10 years 2.1 years
-40°C > 10 years 2.9 years
+85°C 0.5 years 0.5 years