MC9S12G Datasheet, PDF (359/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops.

S12 Clock, Reset and Power Management Unit (S12CPMU)
frequency
TCTRIM[4:0] ^{= 0x11111}
0x11111
...
0x10101
0x10100
0x10011
0x10010
0x10001
TC increases
TCTRIM[4:0] = 0x10000 or 0x00000 (nominal TC)
TCTRIM[4:0] _{= 0x01111}
0x00001
0x00010
0x00011
0x00100
0x00101
...
0x01111
TC decreases
- 40C
150C
temperature
Figure 10-26. Influence of TCTRIM[4:0] on the Temperature Coefficient
NOTE
The frequency is not necessarily linear with the temperature (in most cases
it will not be). The above diagram is meant only to give the direction
(positive or negative) of the variation of the TC, relative to the nominal TC.
Setting TCTRIM[4:0] to 0x00000 or 0x10000 does not mean that the
temperature coefficient will be zero. These two combinations basically
switch off the TC compensation module, which results in the nominal TC of
the IRC1M.
TCTRIM[4:0]
00000
00001
00010
00011
00100
00101
00110
IRC1M indicative
relative TC variation
0 (nominal TC of the IRC)
-0.27%
-0.54%
-0.81%
-1.08%
-1.35%
-1.63%
IRC1M indicative frequency drift
for relative TC variation
0%
-0.5%
-0.9%
-1.3%
-1.7%
-2.0%
-2.2%
MC9S12G Family Reference Manual, Rev.1.01
Freescale Semiconductor
359
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.