
Appendix C Recommended PCB Layout
MC9S12XDP512 Data Sheet, Rev. 2.17
Freescale Semiconductor
1295
Table C-1. Recommended Decoupling Capacitor Choice
Component
Purpose
Type
Value
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
R1
Q1
V
DD1
filter capacitor
V
DD2
filter capacitor
V
DDA
filter capacitor
V
DDR
filter capacitor
V
DDPLL
filter capacitor
V
DDX
filter capacitor
OSC load capacitor
OSC load capacitor
PLL loop filter capacitor
PLL loop filter capacitor
V
DDX
filter capacitor
V
DDX
filter capacitor
PLL loop filter resistor
Quartz
Ceramic
Ceramic X7R
Ceramic X7R
X7R/tantalum
Ceramic X7R
X7R/tantalum
Comes from crystal manufacturer
220 nF
220 nF
>=100 nF
>=100 nF
220 nF
>=100 nF
See PLL specification chapter
X7R/tantalum
X7R/tantalum
See PLL specification chapter
—
>=100 nF
>=100 nF
—