Chapter 18 Real-Time Counter With Calendar (RTCV2)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
641
Figure 18-1. Real-Time Counter with Calendar (RTC) Block Diagram
18.3
External Signal Description
18.3.1 OSCCLK
The OSCCLK is 4-16MHZ main OSC output.
18.3.2 OSCCLK_32K
The OSCCLK_32K is 32.768K OSC output.
16-bit counter
16-bit modulo
16-bit modulo
16-bit comparator
16-bit latch
RTCCNT
RTCMOD
Interrupt
Logic
SECF
SECIE
Second Counter Register
HRF
HRIE
Minute Counter Register
MINF
MINIE
Hour Counter Register
1 Hz
4 HZ
compensation cycle
TB0IE
TB0F
COMPIE
COMPF
Compensation Circuit
CCS
Q
Comparator
COMPE
CALS
CALCLK
1/(RTCPS+1)
RTCCLK
1/32
CLKSRC
OSCCLK
IRCCLK
OSCCLK_32K
CLKSRC