MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 360

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

S12 Clock, Reset and Power Management Unit (S12CPMU)
10.3.2.19 S12CPMU Oscillator Register (CPMUOSC)
This registers configures the external oscillator (XOSCLCP).
360
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
TCTRIM[4:0]
Since the IRC1M frequency is not a linear function of the temperature, but
more like a parabola, the above relative variation is only an indication and
should be considered with care.
Be aware that the output frequency vary with TC trimming. A frequency
trimming correction is therefore necessary. The values provided in
Table 10-23
device to device.
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
Table 10-23. TC trimming of the IRC1M frequency at ambient temperature
are typical values at ambient temperature which can vary from
0 (nominal TC of the IRC)
MC9S12G Family Reference Manual,
relative TC variation
IRC1M indicative
+0.27%
+0.54%
+0.81%
+1.07%
+1.34%
+1.59%
+1.86%
+2.11%
+2.38%
+2.62%
+2.89%
+3.12%
+3.39%
+3.62%
+3.89%
-2.20%
-2.47%
-2.77%
-3.33%
-3.91%
-4.18%
-1.9%
-3.6%
-3.04
NOTE
IRC1M indicative frequency drift
for relative TC variation
Rev.1.01
+0.5%
+0.9%
+1.3%
+1.7%
+2.0%
+2.2%
+2.5%
+3.0%
+3.4%
+3.9%
+4.3%
+4.7%
+5.1%
+5.6%
+5.9%
-2.5%
-3.0%
-3.4%
-3.9%
-4.3%
-4.7%
-5.1%
-5.6%
-5.9%
0%
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