Clock and Board Guidelines
MPC561/MPC563 Reference Manual, Rev. 1.2
C-2
Freescale Semiconductor
C.1
MPC56x Device Power Distribution
VDD (external 2.6 V)
VSS (external GND)
NVDDL (external 2.6 V)
VSS (internal GND)
VDDSYN
XFC
VSSSYN
EXTAL
XTAL
KAPWR
IRAMSTBY
6
Keyed
VDD 2.6 V
KAP 2.6 V
CX(pF)
4
CY(pF)
<100
Ω
100 nF
CXFC
100 nF
3
100 nF
100 nF
<10
Ω
1 µF
1 nF
1 nF
1µF
100 nF
R1
2
(Main Supply)
1
VDDF
5
(external 2.6 V)
1. The main power supply may optionally supply operating current to reduce the keep-alive current requirements. See
the circuit in
Section 8.11.1, “System Clock Control Register (SCCR)
.”
2. Resistor R
1
is currently not required. Space should be left on the board to add it in the future if necessary.
3. All 100 nF capacitors should be placed close to the pin.
4. C
L
is a function of specific crystal C
L
= C
X
+ C
Y
Section C.2, “Crystal Oscillator External Components
5. This flash power supply is available on MPC563/564. VDDF should be connected to VDD as close as possible to the
chip, preferably directly to an inner power plane of the board.
6. See C.3.3 for more information.
7. "All compenent values shown are nominal. Compenent tolerance should be considered when designing the system."
100 nF
Q1
Board
MPC56x Device
V
Supply
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...