MM912H634CM1AER2 Freescale Semiconductor, MM912H634CM1AER2 Datasheet - Page 261

• Manufacturer Part Number: MM912H634CM1AER2
• Description: 64KS12 LIN2xLS/HS Isense
• Manufacturer: Freescale Semiconductor
• Series: -r

Specifications of MM912H634CM1AER2

• Applications: Automotive
• Core Processor: HCS12
• Program Memory Type: FLASH (64 kB)
• Controller Series: HCS12
• Ram Size: 6K x 8
• Interface: LIN
• Number Of I /o: -
• Voltage - Supply: 5.5 V ~ 27 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Freescale Semiconductor
frequency
- 40C
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] at 0x00000 or 0x10000 does not mean that the temperature coefficient
will be zero. These two combinations basically switch off the TC compensation module,
which result in the nominal TC of the IRC1M.
TCTRIM[4:0]
00000
00001
00010
00100
00101
01000
01001
01010
00011
00110
00111
01011
01100
TCTRIM[4:0] = 0x10000 or 0x00000 (nominal TC)
Figure 94. Influence of TCTRIM[4:0] on the Temperature Coefficient
Table 376. TC Trimming of the Frequency of the IRC1M
IRC1M indicative relative TC variation
0 (nominal TC of the IRC)
MM912_634 Advance Information, Rev. 4.0
-0.27%
-0.54%
-0.81%
-1.08%
-1.35%
-1.63%
-2.20%
-2.47%
-2.77%
-3.33%
-1.9%
-3.04
NOTE
150C
IRC1M indicative frequency drift for
relative TC variation
0x11111
...
0x10101
0x10100
0x10011
0x10010
0x10001
0x00001
0x00010
0x00011
0x00100
0x00101
...
0x01111
-0.5%
-0.9%
-1.3%
-1.7%
-2.0%
-2.2%
-2.5%
-3.0%
-3.4%
-3.9%
-4.3%
-4.7%
0%
TC increases
TC decreases
temperature
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