Internal Battery Backed Clock (Rtc); External Battery Assembling - DIGITAL-LOGIC Microspace MSM586SEN Technical User Manual

DIGITAL-LOGIC AG
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 specs:
Manufacturer:
Type:
Nominal values:
Information taken from the datasheet of MAXELL ER10/28
PRODUCT:
MSM586SEV
Battery current:
Battery-Lifetime:
Battery-Lifetime Version V2.1/V2.2
MAXELL
ER10/28
3.6V / 410mAh / -55° C...~+85° C
Temperatur
° C
+25° C
-40° C
+85° C
+25° C
-40° C
+85° C
36
MSM586SEN/SEV Manual V1.5E
Battery voltage VCC (+5V)
V switched ON
3.65
3.52
3.78
VCC (+5V)
switched OFF
µA µA
0.00 7.85
0.00 5.48
4.37 40.31
> 10 4.5year
> 10 5.2year
> 10 1.0year