DIGITAL-LOGIC Microspace MSM586SEN - Internal Battery Backed Clock (RTC); External Battery Assembling

DIGITAL-LOGIC AG MSM586SEN/SEV Manual V1.5E
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4.5.2 Internal 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.
4.5.3 External Battery assembling:
• If customer wants to connect an external battery (check for the appropriate connector in the chapter 7
DESCRIPTION OF THE CONNECTORS),
4.5.3.1 Battery-Lifetime Version V2.1/V2.2
Battery specs:
Manufacturer: MAXELL
Type: ER10/28
Nominal values: 3.6V / 410mAh / -55°C...~+85°C
Information taken from the datasheet of MAXELL ER10/28
PRODUCT: Temperatur
°C
Battery voltage
V
VCC (+5V)
switched ON
µA
VCC (+5V)
switched OFF
µA
MSM586SEV
Battery current: +25°C 3.65 0.00 7.85
-40°C 3.52 0.00 5.48
+85°C 3.78 4.37 40.31
Battery-Lifetime: +25°C > 10 4.5year
-40°C > 10 5.2year
+85°C > 10 1.0year