SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 265
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SC9S12XS256J1MAA
Manufacturer Part Number
SC9S12XS256J1MAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.SC9S12XS256J1MAA.pdf
(736 pages)
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from the EXTAL input frequency. In full stop mode (PSTP = 0), the EXTAL pin is pulled down by an
internal resistor of typical 200 kΩ.
Freescale Semiconductor
Figure 9-2. Loop Controlled Pierce Oscillator Connections (LCP mode selected)
Freescale recommends an evaluation of the application board and chosen
resonator or crystal by the resonator or crystal supplier.
Loop controlled circuit is not suited for overtone resonators and crystals.
Full swing Pierce circuit is not suited for overtone resonators and crystals
without a careful component selection.
Figure 9-3. Full Swing Pierce Oscillator Connections (FSP mode selected)
Figure 9-4. External Clock Connections (FSP mode selected)
* R
MCU
Refer to manufacturer’s data.
s
EXTAL
can be zero (shorted) when use with higher frequency crystals.
XTAL
MCU
MCU
S12XS Family Reference Manual Rev. 1.09
EXTAL
EXTAL
XTAL
XTAL
RS*
RB
Not Connected
NOTE
NOTE
Ceramic Resonator
Crystal or
CMOS Compatible
External Oscillator
Ceramic Resonator
(V
C1
C2
DDPLL
Crystal or
C1
C2
Level)
V
SSPLL
V
SSPLL
Pierce Oscillator (S12XOSCLCPV2)
265
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