33FJ128MC708 datasheet(8/90 Pages) MICROCHIP

8 / 90 page

dsPIC33F

DS70155C-page 6

Preliminary

2.0

dsPIC33F DEVICE FAMILY

OVERVIEW

The dsPIC33F device family employs a powerful 16-bit

architecture that seamlessly integrates the control

features

Microcontroller

(MCU)

with

the

computational capabilities of a Digital Signal Processor

(DSP).

The

resulting

functionality

ideal

for

applications

that

rely

high-speed,

repetitive

computations, as well as control.

The DSP engine, dual 40-bit accumulators, hardware

support for division operations, barrel shifter, 17 x 17

multiplier, a large array of 16-bit working registers and

a wide variety of data addressing modes, together

provide the dsPIC33F Central Processing Unit (CPU)

with extensive mathematical processing capability.

Flexible and deterministic interrupt handling, coupled

with a powerful array of peripherals, renders the

dsPIC33F devices suitable for control applications.

Further,

Direct

Memory

Access

(DMA)

enables

overhead-free

transfer of data

between

several

peripherals and a dedicated DMA RAM. Reliable, field

programmable

Flash

program

memory

ensures

scalability of applications that use dsPIC33F devices.

Figure 2-1 shows a sample device block diagram

typical of the dsPIC33F product family.

FIGURE 2-1:

dsPIC33F DEVICE BLOCK DIAGRAM

Barrel Shifter

ACCA<40>

ACCB<40>

DSP Engine

Divide Control

17 x 17 Multiplier

W Register

Array

16 x 16

Memory

Mapped

16-bit ALU

Program Flash

Memory Data

Access

Y AGU

X AGU

Program Counter

<23 bits>

Instruction

Prefetch & Decode

X-Data Bus <16-bit>

Y-Data Bus <16-bit>

Data SRAM

up to

28 Kbytes

Flash

Program

Memory

up to

256 Kbytes

Peripherals

I/O Ports

Legend:

MCU/DSP X-Data Path

DSP Y-Data Path

Address Path

Status Register

Dual Port

RAM

2 Kbytes

DMA

Controller

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