MC56F8323PB View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MC56F8323PB

16-bit Hybrid Controller

Motorola => Freescale 

Award-Winning Development Environment

A key application-specific feature of the 56F8323 is the inclusion of one Pulse Width Modulator (PWM)

module. This module incorporates three complementary, individually programmable PWM signal output

pairs and is also capable of supporting six independent PWM functions to enhance motor control

functionality. Complementary operation permits programmable dead time insertion, distortion correction

via current sensing by software, and separate top and bottom output polarity control. The up-counter value

is programmable to support a continuously variable PWM frequency. Edge-aligned and center-aligned

synchronous pulse width control (0% to 100% modulation) is supported. The device is capable of

controlling most motor types: ACIM (AC Induction Motors), both BDC and BLDC (Brush and Brushless

DC motors), SRM and VRM (Switched and Variable Reluctance Motors), and stepper motors. The PWM

incorporates fault protection and cycle-by-cycle current limiting with sufficient output drive capability to

directly drive standard optoisolators. A “smoke-inhibit”, write-once protection feature for key parameters

is also included. A patented PWM waveform distortion correction circuit is also provided. Each PWM is

double-buffered and includes interrupt controls to permit integral reload rates to be programmable from 1/2

(center-aligned mode only) to 16. The PWM module provides reference outputs to synchronize the

Analog-to-Digital Converters (ADCs) through Quad Timer C, Channel 2.

The 56F8323 incorporates one Quadrature Decoder capable of capturing all four transitions on the

two-phase inputs, permitting generation of a number proportional to actual position. Speed computation

capabilities accommodate both fast- and slow-moving shafts. An integrated watchdog timer in the

Quadrature Decoder can be programmed with a time-out value to alarm when no shaft motion is detected.

Each input is filtered to ensure only true transitions are recorded.

This controller also provides a full set of standard programmable peripherals that include two Serial

Communications Interfaces (SCIs), two Serial Peripheral Interfaces (SPIs), two Quad Timers, and

FlexCAN. Any of these interfaces can be used as General-Purpose Input/Outputs (GPIOs) if that function

is not required. A Flex Controller Area Network interface (CAN Version 2.0 B-compliant) and an internal

interrupt controller are also a part of the 56F8323.

1.3 Award-Winning Development Environment

Processor ExpertTM (PE) provides a Rapid Application Design (RAD) tool that combines easy-to-use

component-based software application creation with an expert knowledge system.

The CodeWarrior Integrated Development Environment is a sophisticated tool for code navigation,

compiling, and debugging. A complete set of evaluation modules (EVMs), demonstration board kit and

development system cards will support concurrent engineering. Together, PE, CodeWarrior and EVMs

create a complete, scalable tools solution for easy, fast, and efficient development.

1.4 Architecture Block Diagram

The 56F8323 architecture is shown in Figure 1-1 and Figure 1-2. Figure 1-1 illustrates how the 56800E

system buses communicate with internal memories and the IP Bus Bridge. Table 1-1 lists the internal buses

in the 56800E architecture and provides a brief description of their function. Figure 1-2 shows the

peripherals and control blocks connected to the IP Bus Bridge. The figures do not show the on-board

regulator and power and ground signals. They also do not show the multiplexing between peripherals or the

dedicated GPIOs. Please see Part 2 Signal/Connection Descriptions to see which signals are multiplexed

with those of other peripherals.

MOTOROLA

56F8323 Technical Data

5

Preliminary

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