Intel C2550 FH8065401488912 Fiche De Données
Codes de produits
FH8065401488912
Volume 2—Real Time Clock (RTC)—C2000 Product Family
Intel
®
Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 2 of 3
September 2014
520
Order Number: 330061-002US
26
Real Time Clock (RTC)
The SoC contains an MC146818B-compatible Real-Time Clock (RTC) with 256 bytes of
battery-backed RAM. The real-time clock performs two key functions—keeping track of
the time of day and storing system data even when the system is powered down. The
RTC operates on a 32.768-kHz crystal and a 3.3V battery.
The RTC supports two lockable memory ranges. By setting the bits in the configuration
space, two 8-byte ranges are locked to read and write accesses. This prevents
unauthorized reading of passwords or other system security information.
The RTC supports a date alarm that allows for scheduling a wake-up event up to 30
days in advance.
Figure 26-1. RTC Covered in This Chapter
Table 26-1. References
Reference
Revision
Date
Document Title
Intel White
Paper 321088
-
January 2009
I
O
Platform Controller Unit
UART
GP
IO
IO
RT
C
C
HP
E
E
T
82
59
59
IO
xA
PI
PI
C
82
54
54
iLB
2
I
O
I
O
I
O
I
O
I
O
PMC
I
O
SMBus
0
I
O
LP
C
I
O
S
E
RI
RQ
I
O
SPI
I
O