mc56f801 Freescale Semiconductor, Inc, mc56f801 Datasheet - Page 8

• Manufacturer Part Number: mc56f801
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

1.1.4
1.2 56F8014 Description
The 56F8014 is a member of the 56800E core-based family of Digital Signal Controllers (DSCs). It
combines, on a single chip, the processing power of a DSP and the functionality of a microcontroller with
a flexible set of peripherals to create an extremely cost-effective solution. Because of its low cost,
configuration flexibility, and compact program code, the 56F8014 is well-suited for many applications.
The 56F8014 includes many peripherals that are especially useful for industrial control, 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 56F8014 supports program execution from internal memories. Two data operands can be accessed
from the on-chip data RAM per instruction cycle. The 56F8014 also offers up to 26 General Purpose
Input/Output (GPIO) lines, depending on peripheral configuration.
The 56F8014 Digital Signal Controller includes 16KB of Program Flash and 4KB of Unified
Data/Program RAM. Program Flash memory can be independently bulk erased or erased in pages.
Program Flash page erase size is 512 Bytes/256 Words.
A key application-specific feature of the 56F8014 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 five independent PWM functions to enhance motor control
functionality. Complementary operation permits programmable dead time insertion, 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 Converter
(ADC) through Quad Timer, Channels 2 and 3.
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Fabricated in high-density CMOS with 5V-tolerant, TTL-compatible digital inputs
On-chip regulators for digital and analog circuitry to lower cost and reduce noise
Wait and Stop modes available
ADC smart power management
Each peripheral can be individually disabled to save power
Energy Information
56F8014 Technical Data, Rev. 9
Freescale Semiconductor
Preliminary