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| MC9S12XD256MAL Datasheet, PDF (1293/1348 Pages) Freescale Semiconductor, Inc – Freescale’s Scalable Controller Area Network | |||
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Appendix C Recommended PCB Layout
Table C-1. Recommended Decoupling Capacitor Choice
Component
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
R1
Q1
Purpose
VDD1 ï¬lter capacitor
VDD2 ï¬lter capacitor
VDDA ï¬lter capacitor
VDDR ï¬lter capacitor
VDDPLL ï¬lter capacitor
VDDX ï¬lter capacitor
OSC load capacitor
OSC load capacitor
PLL loop ï¬lter capacitor
PLL loop ï¬lter capacitor
VDDX ï¬lter capacitor
VDDX ï¬lter capacitor
PLL loop ï¬lter resistor
Quartz
Type
Value
Ceramic
220 nF
Ceramic X7R
Ceramic X7R
X7R/tantalum
220 nF
>=100 nF
>=100 nF
Ceramic X7R
220 nF
X7R/tantalum
>=100 nF
Comes from crystal manufacturer
See PLL speciï¬cation chapter
X7R/tantalum
>=100 nF
X7R/tantalum
>=100 nF
See PLL speciï¬cation chapter
â
â
Freescale Semiconductor
MC9S12XDP512 Data Sheet, Rev. 2.21
1295
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