Clocks and Power Control
MPC561/MPC563 Reference Manual, Rev. 1.2
8-22
Freescale Semiconductor
8.8.2
Chip Power Structure
The MPC561/MPC563 provides a wide range of possibilities for power supply connections.
illustrates the different power supply sources for each of the basic units on the chip.
8.8.2.1
NVDDL
This supplies the final output stage of the 2.6-V pad output drivers.
8.8.2.2
QVDDL
This supplies all pad logic and pre-driver circuitry, except for the final output stage of the 2.6-V pad output
drivers.
8.8.2.3
VDD
VDD powers the internal logic of the MPC561/MPC563, nominally 2.6V.
8.8.2.4
VDDSYN, VSSSYN
The charge pump and the VCO of the SPLL are fed by a separate 2.6-V power supply (VDDSYN) in order
to improve noise immunity and achieve a high stability in its output frequency. VSSSYN provides an
isolated ground reference for the PLL.
8.8.2.5
KAPWR
The oscillator, time base counter, decrementer, periodic interrupt timer and the real-time clock are fed by
the KAPWR rail. This allows the external power supply unit to disconnect all other sub-units of the MCU
in low-power deep-sleep mode. The TEXP pin (fed by the same rail) can be used by the external power
supply unit to switch between sources. The IRQ[6:7]/MODCK[2:3], IRQ5/MODCK1, XTAL, EXTAL,
EXTCLK, PORESET
,
HRESET, SRESET, and RSTCONF/TEXP input pins are powered by KAPWR.
Circuits, including pull-up resisters, driving these inputs should be powered by KAPWR.
8.8.2.6
VDDA, VSSA
VDDA supplies power to the analog subsystems of the QADC64E_A and QADC64E_B modules; it is
nominally 5.0 V. VSSA is the ground reference for the analog subsystems.
8.8.2.7
VFLASH
VFLASH supplies the UC3F normal operating voltage. It is nominally 5.0 V. The MPC561 has no
VFLASH signal.
8.8.2.8
VDDF, VSSF
VDDF provides internal core voltage to the UC3F Flash module; it should be a nominal 2.6V. VSSF
provides an isolated ground for the UC3F Flash module. The MPC561 has no VDDF or VSSF signal.
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...