NXP Semiconductors MC56F81746LVLF

Overview

MC56F81746LVLF from NXP Semiconductors is a 32-bit digital signal controller (DSC) based on the 56800EX core, operating at up to 100 MHz in fast mode. It integrates 64 KB flash, 12 KB RAM, dual 12-bit ADCs with x1/x2/x4 programmable gain amplifiers, two operational amplifiers, and an eFlexPWM module with NanoEdge 312 ps resolution-targeting industrial motor control and solar inverter systems.

For engineers reviewing the MC56F81746LVLF datasheet, MC56F81746LVLF pinout, MC56F81746LVLF application, or MC56F81746LVLF equivalent, key selection criteria include V-grade temperature range (−40°C to +105°C), 64-pin LQFP package, dual QSCI with LIN slave support, LPI2C with full PMBus compliance, and hardware CRC generator for functional safety validation.

Technical Context

The MC56F81746LVLF implements the 56800EX core with dual-Harvard architecture, supporting concurrent instruction fetch and dual data accesses per cycle, plus single-cycle 32×32→64-bit MAC operations. Its analog subsystem includes two independent 12-bit cyclic ADCs with 8-channel external inputs each, programmable gain amplifiers, and four comparators with integrated 8-bit DAC references.

Timing and control are managed by one 16-bit quad timer (four 16-bit channels), two 32-bit periodic interval timers (PITs), and one quadrature decoder (QDC). The eFlexPWM module delivers eight high-resolution PWM outputs with NanoEdge placement, while communication is handled via two QSCI modules (LIN-capable), one QSPI, and two LPI2C interfaces supporting Fast+ and Ultra Fast modes.

Key Specifications

Pinout & Package

MC56F81746LVLF is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions include dedicated analog supply (VDDA/VSSA), core regulator bypass (VCAP), JTAG/EOnCE debug interface (TCK/TDI/TDO/TMS), and multiplexed GPIO/peripheral signals routed through the Inter-Module Crossbar.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F81746LVLF, MC56F81766LVLF offers greater memory headroom and interface scalability, while MC56F81646LVLF trades peripheral richness for compactness and lower unit cost-both retain identical core timing behavior and V-grade thermal qualification.

Availability

MC56F81746LVLF is available at Aetrix Electronics and suitable for industrial motor control, solar inverter DC-AC stage, and uninterruptible power supply (UPS) applications requiring stable component supply across extended product lifecycles.

Supply support for MC56F81746LVLF 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in real-time control and functional safety.

The MC56F81xxxL family is designed specifically for high-performance digital signal control in power electronics, emphasizing deterministic timing, analog integration, and ASIL-B/EN60730-compliant safety features.

FAQ

What is the maximum operating frequency of the MC56F81746LVLF core?

The MC56F81746LVLF core operates at up to 100 MHz in fast mode and 50 MHz in normal mode. This frequency is achieved using the internal PLL with an 8–16 MHz crystal oscillator input. The 100 MHz operation enables sub-10 µs execution of critical control loops such as field-oriented motor control and solar inverter modulation, as confirmed in the Rev. 3 datasheet Section 1.3.

Does the MC56F81746LVLF support LIN communication?

Yes, the MC56F81746LVLF supports LIN slave functionality through its two queued serial communication interface (QSCI) modules. Each QSCI implements ISO 17987-compliant physical layer signaling with programmable baud rates, 1/16-bit-time noise filtering, and address-mark wakeup-verified in Section 1.5.10 of the MC56F81XXXL datasheet.

What analog peripherals are integrated into the MC56F81746LVLF?

The MC56F81746LVLF integrates dual 12-bit cyclic ADCs (each with 8 external channels and x1/x2/x4 programmable gain), two operational amplifiers (configurable as PGA up to x16), four analog comparators with integrated 8-bit DAC references, one 12-bit DAC, and on-chip temperature sensors-all documented in Sections 1.5.2–1.5.5 of the official datasheet.

Is the MC56F81746LVLF qualified for industrial temperature range?

Yes, the MC56F81746LVLF is rated for V-grade industrial operation from −40°C to +105°C ambient temperature. This qualification is explicitly stated in Table 1 (Product Family) and Section 1.3 (Operation Parameters) of the MC56F81XXXL datasheet Rev. 3, making it suitable for enclosed industrial drives and solar inverter environments.

What package type does the MC56F81746LVLF use?

The MC56F81746LVLF uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments-including VDD, VDDA, VCAP, ADC inputs, PWM outputs, and communication interfaces-are fully detailed in Section 4 (Pinout) and Table 2 (Signal Descriptions) of the MC56F81XXXL datasheet.