56F8123 查看數據表（PDF） - Freescale Semiconductor

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56F8123

16-bit Digital Signal Controllers

Freescale Semiconductor 

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 (FlexCAN) interface (CAN Version 2.0 B-compliant) and

an internal interrupt controller are also a part of the 56F8323.

1.2.2 56F8123 Features

The 56F8123 controller includes 32KB of Program Flash, programmable through the JTAG port, 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 Flash memory area.

The Program Flash memory can be independently bulk erased or erased in pages; Program Flash page

erase size is 1KB. The Boot Flash memory can also be either bulk or page erased.

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

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

these interfaces can be used as General Purpose Input/Outputs (GPIOs) if that function is not required. An

internal interrupt controller is also a part of the 56F8123.

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.

56F8323 Technical Data, Rev. 17

10

Freescale Semiconductor

Preliminary

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