S9S12P64J0MQK Datasheet, PDF (231/566 Pages) Freescale Semiconductor, Inc – Chapter 1 Device Overview MC9S12P-Family

S12 Clock, Reset and Power Management Unit (S12CPMU)
IRC1M frequency (IRCCLK)
1.5MHz
{ ^IRCTRIM[5:0]
1MHz
IRCTRIM[9:6]
......
600KHz
$000
Figure 7-26. IRC1M Frequency Trimming Diagram
IRCTRIM[9:0]
$3FF
S12P-Family Reference Manual, Rev. 1.13
Freescale Semiconductor
231