Clock, Reset, and Power Control (CRP)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
Freescale Semiconductor
5-31
Preliminary
Figure 5-19. RTC/API Block Diagram
5.4.3
Register Description
The RTC registers control and monitor operation of the RTC. The registers that are relevant to the use of
the RTC are as follows.
•
RTC status and control register (
Section 5.2.2.2, “RTC Status and Control Register
•
Section 5.2.2.3, “RTC Counter Register (CRP_RTCCNT)
”)
0
1
2
CLKSEL
3
32 kHz IRC
16 MHz IRC
32 kHz OSC
div 32
==
CN
T
E
N
RTCCNT
RTCVAL
10–21
RTCF
RTCIE
RTC interrupt
offset reg
==
22–31
API wakeup
+
load
22–31
APIVAL
APIEN
reset
reset
32-bit counter
sync
sync
RTC wakeup
APIF
APIIE
API
sync
interrupt
div 512
16 MHz IRC
ROVRF
ROVREN
RTC Rollover
sync
0
31
0
31