NXP Semiconductors MC56F8247MLH

Overview

MC56F8247MLH from Freescale Semiconductor is a 60 MHz digital signal controller (DSC) based on the 56800E core, integrating DSP processing power and microcontroller functionality. It features 48 KB flash memory, 8 KB RAM, dual 12-bit ADCs with ×1/×2/×4 programmable gain, and six-channel NanoEdge PWM with 520 ps resolution. It targets motor control (BLDC, PMSM), digital power supplies, and industrial inverters.

For engineers reviewing the MC56F8247MLH datasheet, MC56F8247MLH pinout, MC56F8247MLH application, or MC56F8247MLH equivalent, key selection factors include eFlexPWM input capture capability (3 channels), 54 GPIOs, –40 °C to +105 °C operating range, and LQFP-64 package compatibility for high-density embedded control designs.

Technical Context

The MC56F8247MLH implements a dual-Harvard 56800E core delivering up to 60 MIPS, with three parallel execution units enabling six operations per instruction cycle. Its unified C-efficient architecture supports both compact control code and optimized DSP routines.

Peripherals are tightly coupled via an inter-module crossbar: ADC conversions synchronize to eFlexPWM triggers, comparator outputs drive PWM fault inputs, and timer captures feed into motor position estimation. All modules operate from a single 3.0–3.6 V supply with integrated POR, LVI, and PLL clock generation.

Key Specifications

Pinout & Package

MC56F8247MLH is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined by multiplexed peripheral mapping controlled via system integration module (SIM) registers.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal controller applications.

Compared with MC56F8247MLH, MC56F8257MLH provides headroom for feature-rich firmware without changing PCB layout, while MC56F8246MLH trades input capture capability for lower cost in fixed-function applications - both require validation of memory initialization and peripheral register access patterns.

Availability

MC56F8247MLH is available at Aetrix Electronics and suitable for industrial motor control, solar inverter auxiliary functions, and digital power supply management requiring stable component supply across long production lifecycles.

Supply support for MC56F8247MLH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in embedded processing solutions for industrial, automotive, and consumer markets.

The MC56F8247MLH belongs to the 56800E-based DSC product line, designed specifically for cost-sensitive, high-performance real-time control applications demanding integrated analog peripherals and deterministic PWM timing.

FAQ

What is the maximum ADC conversion rate supported by the MC56F8247MLH?

The MC56F8247MLH supports a maximum ADC clock frequency of 10 MHz, achieving a single conversion time of 850 ns (8.5 ADC clock cycles) and additional conversion time of 600 ns. This enables up to ~1.17 MSPS aggregate sampling across both 12-bit ADC modules when operating in parallel scan mode, sufficient for high-bandwidth current and voltage loop sampling in motor control.

Does the MC56F8247MLH support CAN communication?

Yes, the MC56F8247MLH integrates one Freescale Scalable Controller Area Network (MSCAN) 2.0 A/B module supporting standard and extended frames at data rates up to 1 Mbps. It includes five receive buffers and three transmit buffers, making it suitable for industrial networked control systems requiring robust, deterministic communication.

What package type and pin count does the MC56F8247MLH use?

The MC56F8247MLH uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. This package provides 54 GPIOs, including 5 V tolerant inputs, and supports the full peripheral set including eFlexPWM, dual ADCs, QSPI, dual QSCI, dual I²C, and MSCAN interfaces.

How does the NanoEdge PWM feature benefit motor control applications using the MC56F8247MLH?

The NanoEdge PWM in the MC56F8247MLH delivers 520 ps resolution for PWM edge placement, enabling precise timing control critical for advanced motor algorithms. This allows accurate implementation of space-vector modulation, adaptive deadtime insertion, and phase-shifted carrier techniques - reducing torque ripple in PMSM/BLDC drives and improving efficiency in high-frequency inverter topologies.

Is the MC56F8247MLH compatible with Freescale's CodeWarrior IDE and Processor Expert tools?

Yes, the MC56F8247MLH is fully supported by Freescale's CodeWarrior IDE and Processor Expert rapid application design toolset. These tools provide graphical peripheral configuration, auto-generated driver code, real-time debugging via JTAG/EOnCE, and seamless integration with evaluation modules - accelerating development of motor control and digital power applications.