Siemens S5-135U/155U - Manual (Page 231)

5-91
System Manual
C79000-G8576-C199-06
Current consumption
(at 5 V) 140 mA max.
Backup current 13
mA typ.
Backup voltage/
UCMOS 2.7 V to 3.6 V
Submodule battery Lithium button cell 3 V/200 mAh Type CR 2430
(LF-1/2W) from VARTA
Backup time 1 year min. at 25 o C
Access time t
ACC
150 ns
Submodules with
Battery Backup
CPUs, Memory Cards, Memory Submodules, Interface Submodules