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| MC9S12DT128_1002 Datasheet, PDF (66/140 Pages) Freescale Semiconductor, Inc – Device User Guide | |||
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Device User Guide â 9S12DT128DGV2/D V02.17
EXTAL
MCU
XTAL
CDC *
C1
Crystal or
ceramic resonator
C2
VSSPLL
* Due to the nature of a translated ground Colpitts oscillator a
DC voltage bias is applied to the crystal
Please contact the crystal manufacturer for crystal DC
bias conditions and recommended capacitor value CDC.
Figure 2-5 Colpitts Oscillator Connections (PE7=1)
EXTAL
MCU
XTAL
RB
RS*
C1
Crystal or
ceramic resonator
C2
VSSPLL
* Rs can be zero (shorted) when used with higher frequency crystals.
Refer to manufacturerâs data.
Figure 2-6 Pierce Oscillator Connections (PE7=0)
EXTAL
MCU
XTAL
CMOS-COMPATIBLE
EXTERNAL OSCILLATOR
(VDDPLL-Level)
not connected
Figure 2-7 External Clock Connections (PE7=0)
66
Freescale Semiconductor
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