Overview
•
•
•
•
•
•
•
•
•
•
•
•
•
32-bit arithmetic and logic multi-bit shifter
Four 36-bit accumulators, including extension bits
Parallel instruction set with unique DSP addressing modes
Hardware DO and REP loops
Bit reverse address mode, effectively supporting DSP and Fast Fourier Transform
algorithms
Full shadowing of the register stack for zero-overhead context saves and restores:
nine shadow registers corresponding to the R0, R1, R2, R3, R4, R5, N, N3, and M01
address registers
Instruction set supporting both DSP and controller functions
Controller-style addressing modes and instructions for compact code
Enhanced bit manipulation instruction set
Efficient C compiler and local variable support
Software subroutine and interrupt stack with depth limited only by memory
Priority level setting for interrupt levels
JTAG/Enhanced On-Chip Emulation (OnCE) for unobtrusive, real-time debugging
that is independent of processor speed
1.3 Operation Parameters
• Up to 80 MHz operation at -40 °C to 105 °C ambient temperature
• Single 3.3 V power supply
• Supply range: V
DD
- V
SS
= 2.7 V to 3.6 V, V
DDA
- V
SSA
= 2.7 V to 3.6 V
1.4 On-Chip Memory and Memory Protection
• Modified dual Harvard architecture permits as many as three simultaneous accesses
to program and data memory
• Internal flash memory with security and protection to prevent unauthorized access
• Memory resource protection (MRP) unit to protect supervisor programs and
resources from user programs
• Programming code can reside in flash memory during flash programming
• The dual-ported RAM controller supports concurrent instruction fetches and data
accesses, or dual data accesses, by the DSC core.
• Concurrent accesses provide increased performance.
• The data and instruction arrive at the core in the same cycle, reducing latency.
• On-chip memory
• Up to 128 KW program/data flash memory
• Up to 16 KW dual port data/program RAM
MC56F8458x Advance Information Data Sheet, Rev. 2, 06/2012.
6
Preliminary
General Business Information
Freescale Semiconductor, Inc.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
