A Comprehensive Guide To MC56F8322VFAE Microcontroller IC 16-Bit 60MHz 32KB (16K x 16) FLASH 48-LQFP (7x7)

56800E 56F8xxx Microcontroller IC 16-Bit 60MHz 32KB (16K x 16) FLASH 48-LQFP (7x7)

Device Description

The 56F8322 and 56F8122 are members of the 56800E core-based family of controllers. Each combines,

on a single chip, the processing power of a Digital Signal Processor (DSP) and the functionality of a

microcontroller with a flexible set of peripherals to create an extremely cost-effective solution. Because

of their low cost, configuration flexibility, and compact program code, the 56F8322 and 56F8122 are

well-suited for many applications. These devices include many peripherals that are especially useful for

automotive control (56F8322 only); industrial control and networking; motion control; home appliances;

general purpose inverters; smart sensors; fire and security systems; power management; and medical

monitoring applications.

The 56800E core is based on a Harvard-style architecture consisting of three execution units operating in

parallel, allowing as many as six operations per instruction cycle. The MCU-style programming model and

optimized instruction set allow straightforward generation of efficient, compact DSP and control code.

The instruction set is also highly efficient for C Compilers to enable rapid development of optimized

control applications.

The 56F8322 and 56F8122 support program execution from internal memories. Two data operands can be

accessed from the on-chip data RAM per instruction cycle. These devices also provide one external

dedicated interrupt line and up to 21 General Purpose Input/Output (GPIO) lines, depending on peripheral

configuration.

56F8322 Features

The 56F8322 controller includes 32KB of Program Flash and 8KB of Data Flash, each programmable

through the JTAG port, and 4KB of Program RAM and 8KB of Data RAM. A total of 8KB of Boot Flash

is incorporated for easy customer inclusion of field-programmable software routines that can be used to

program the main Program and Data Flash memory areas. Both Program and Data Flash memories can be

independently bulk erased or erased in pages. Program Flash page erase size is 1KB. Boot and Data Flash

page erase size is 512 bytes. The Boot Flash memory can also be either bulk or page erased.

A key application-specific feature of the 56F8322 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 56F8322 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 56F8322.

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