NXP Semiconductors MC56F80746MLF

Overview

MC56F80746MLF from NXP Semiconductors is a 32-bit digital signal controller (DSC) based on the 56800EF core, delivering 100 MIPS at 100 MHz. It integrates DSP and MCU functionality with dual 12-bit ADCs (14-channel each), two programmable op-amps, three analog comparators with 8-bit DAC references, and an eFlexPWM module supporting up to 8 channels with 312 ps NanoEdge resolution-targeting motion control and industrial inverter systems.

For engineers reviewing the MC56F80746MLF datasheet, MC56F80746MLF pinout, MC56F80746MLF application, or MC56F80746MLF equivalent, key selection criteria include its V-grade temperature range (−40°C to +105°C), 64 KB flash / 8 KB RAM memory map, dual QSCI with LIN slave support, LPI2C with full PMBus compliance, and 64-pin LQFP package with validated GPIO, ADC, PWM, and debug pin assignments.

Technical Context

The MC56F80746MLF implements the 56800EF core with enhanced single-precision floating-point unit (eFPU) and CORDIC engine for trigonometric/hyperbolic computation, enabling real-time motor control algorithms. Its unified memory architecture maps both flash and RAM into program and data spaces, supporting efficient C compilation and zero-overhead context switching via nine shadow registers.

Peripheral integration centers on deterministic timing: the eFlexPWM submodule provides 312 ps edge placement resolution with NanoEdge, synchronized to ADC conversions via the inter-module crossbar; dual 12-bit cyclic ADCs operate at up to 12.5 MHz with x1/x2/x4 programmable gain amplifiers and hardware-triggered parallel scan modes.

Key Specifications

Pinout & Package

MC56F80746MLF is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Table 2 of the MC56F80XXX datasheet Rev. 2.1, including dedicated VDD/VSS pairs for I/O and analog domains, VDDA/VSSA for precision analog circuitry, VCAP for core regulator stabilization, and JTAG pins (TDI/TDO/TCK/TMS) for real-time debugging.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F80748MLF, the MC56F80746MLF provides identical core performance and memory but targets mid-tier industrial applications where full GPIO count is unnecessary; versus MC56F80646MLF, it delivers 56% higher MIPS and expanded communication interfaces, making it suitable for complex grid-tied solar inverters requiring dual QSCI for master-slave synchronization and LIN for auxiliary subsystems.

Availability

MC56F80746MLF is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, uninterruptible power supplies, and smart appliance inverters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MC56F80746MLF 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

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in mixed-signal microcontrollers and digital signal processors.

The MC56F80xxx family was designed specifically for high-performance, safety-critical motor control and power conversion applications-integrating DSP-level math acceleration with MCU-level peripheral richness in a single chip.

FAQ

What is the maximum operating frequency and processing capability of the MC56F80746MLF?

The MC56F80746MLF operates at a maximum core frequency of 100 MHz, delivering 100 MIPS of processing performance. Its 56800EF core includes an enhanced floating-point unit (eFPU) and CORDIC engine, enabling hardware-accelerated trigonometric, square root, and division operations essential for real-time field-oriented control algorithms. This performance level is confirmed in Section 1.2 and Table 1 of the MC56F80XXX datasheet Rev. 2.1.

Does the MC56F80746MLF support LIN communication, and how is it implemented?

Yes, the MC56F80746MLF supports LIN slave functionality through its two queued serial communication interface (QSCI) modules. Each QSCI includes hardware LIN protocol handling, idle-line and address-mark wakeup detection, and 1/16 bit-time noise filtering. The implementation requires no software overhead for frame parsing or checksum calculation, as specified in Section 1.5.9 of the MC56F80XXX datasheet Rev. 2.1.

What analog peripherals are integrated into the MC56F80746MLF, and how are they configured?

The MC56F80746MLF integrates two independent 12-bit cyclic ADCs (ADCA and ADCB), each with 14 external input channels and a programmable x1/x2/x4 gain amplifier; three analog comparators with integrated 8-bit DAC references; and two operational amplifiers configurable as PGAs, differential amplifiers, or low-pass filters. Configuration is performed via dedicated peripheral registers and crossbar routing, as detailed in Sections 1.5.2–1.5.4 of the MC56F80XXX datasheet Rev. 2.1.

What is the PWM resolution capability of the MC56F80746MLF, and how does NanoEdge enhance it?

The MC56F80746MLF features an eFlexPWM module supporting up to 8 output channels with 312 ps resolution when NanoEdge functionality is enabled. NanoEdge achieves this by adding fractional delay logic to the base 16-bit counter, allowing arbitrary edge placement within the PWM period. This capability is critical for minimizing deadtime uncertainty in high-frequency SiC/GaN inverter designs, as documented in Section 1.5.1 of the MC56F80XXX datasheet Rev. 2.1.

What safety and reliability features does the MC56F80746MLF include for industrial applications?

The MC56F80746MLF includes a windowed Computer Operating Properly (COP) watchdog with selectable clock sources (crystal, IRC, IPBus), an External Watchdog Monitor (EWM) with independent safe-mode output, hardware CRC-16/32 generator, and brownout reset with low-voltage interrupt. These features meet EN60730 Class B and support IEC61508 SIL2 system-level certification, as outlined in Sections 1.5.12–1.5.14 and 1.5.17 of the MC56F80XXX datasheet Rev. 2.1.