MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
3-1
Chapter 3
Central Processing Unit
The RISC processor (RCPU) used in the MPC500 family of microcontrollers integrates five independent
execution units: an integer unit (IU), a load/store unit (LSU), a branch processing unit (BPU), a
floating-point unit (FPU) and an integer multiplier divider (IMD). The RISC’s use of simple instructions
with rapid execution times yields high efficiency and throughput for PowerPC ISA-based systems.
Most integer instructions execute in one clock cycle. Instructions can complete out of order for increased
performance; however, the processor makes execution appear sequential.
This section provides an overview of the RCPU. For a detailed description of this processor, refer to the
RCPU Reference Manual
. The following sections describe each block and sub-block.
3.1
RCPU Block Diagram
provides a block diagram of the RCPU.
Summary of Contents for MPC561
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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...