DSP56800ERM(2006) View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

DSP56800ERM
(Rev.:2006)

Digital Signal Controller

Freescale Semiconductor 

Digital Signal Controller Core

2 Digital Signal Controller Core

• Efficient 16-bit 56800E family Digital Signal Controller (DSC) engine with dual Harvard

architecture

• As many as 32 Million Instructions Per Second (MIPS) at 32MHz core frequency

• Single-cycle 16 × 16-bit parallel Multiplier-Accumulator (MAC)

• Four 36-bit accumulators, including extension bits

• 32-bit arithmetic and logic multi-bit shifter

• Parallel instruction set with unique DSP addressing modes

• Hardware DO and REP loops

• Three internal address buses

• Four internal data buses

• Instruction set supports both DSP and controller functions

• Controller-style addressing modes and instructions for compact code

• Efficient C compiler and local variable support

• Software subroutine and interrupt stack with depth limited only by memory

• JTAG/Enhanced On-Chip Emulation (OnCE) for unobtrusive, processor speed-independent

real-time debugging

3 Memory

• Dual Harvard architecture permits as many as three simultaneous accesses to program and data

memory

• Flash security and protection that prevent unauthorized users from gaining access to the internal

Flash

• On-chip memory

— 32KB of Program Flash

— 4KB of Unified Data/Program RAM

• EEPROM emulation capability using Flash

4 Peripheral Circuits for 56F8025

• One multi-function six-output Pulse Width Modulator (PWM) module

— Up to 96MHz PWM operating clock

— 15 bits of resolution

— Center-aligned and edge-aligned PWM signal mode

— Four programmable fault inputs with programmable digital filter

— Double-buffered PWM registers

— Each complementary PWM signal pair allows selection of a PWM supply source from:

– PWM generator

– External GPIO

– Internal timers

– Analog comparator outputs

– ADC conversion result which compares with values of ADC high- and low-limit registers

to set PWM output

56F8025 Digital Signal Controller Product Brief, Rev. 0

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

3

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