NXP Semiconductors MC56F81648LVLH

Overview

MC56F81648LVLH 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 memory, 12 KB RAM, two 12-bit ADCs with x1/x2/x4 programmable gain amplifiers, one 12-bit DAC, and an eFlexPWM module with NanoEdge 312 ps resolution-targeting industrial motor control, solar inverters, and UPS systems.

For engineers reviewing the MC56F81648LVLH datasheet, MC56F81648LVLH pinout, MC56F81648LVLH application, or MC56F81648LVLH equivalent, key selection criteria include VDD/VSSA supply separation, 48-pin LQFP package constraints, -40°C to 105°C V-grade temperature range, and compatibility with LIN slave, QSPI, and dual LPI2C interfaces for real-time power conversion control.

Technical Context

The MC56F81648LVLH implements the 56800EX core with dual Harvard architecture, supporting concurrent instruction fetch and dual data accesses per cycle, plus hardware DO/REP loops and bit-reverse addressing for FFT acceleration. Its unified DSP/MCU architecture enables C-efficient code for closed-loop control algorithms.

Peripheral integration centers on deterministic timing: the eFlexPWM supports synchronized NanoEdge edge placement across 6 PWM outputs, while dual 12-bit ADCs are hardware-triggered via crossbar-linked PWM events and support parallel scan modes with 10-cycle single-conversion latency at up to 12.5 MHz clock rate.

Key Specifications

Pinout & Package

MC56F81648LVLH uses a 48-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with dedicated analog/digital power domains (VDDA/VSSA separated from VDD/VSS) and JTAG debug interface (TCK/TDI/TDO/TMS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F81648LVLH, MC56F81748LVLH offers expanded memory for larger control algorithms, while MC56F8166LVLH trades LPI2C functionality for additional PWM flexibility-both require PCB layout review due to differing peripheral pin mappings despite shared 48-pin LQFP footprint.

Availability

MC56F81648LVLH is available at Aetrix Electronics and suitable for industrial motor control, solar inverter DC-DC stages, and uninterruptible power supply (UPS) designs requiring stable component supply across extended production lifecycles.

Supply support for MC56F81648LVLH 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 applications, with over 40 years of microcontroller innovation.

The MC56F81xxx family delivers integrated DSP/MCU performance for real-time power electronics control, targeting applications demanding deterministic timing, analog integration, and functional safety features like windowed COP and EWM.

FAQ

What is the maximum operating frequency of the MC56F81648LVLH core?

The MC56F81648LVLH core operates at up to 100 MHz in fast mode, delivering 100 MIPS performance. This frequency is achieved using the on-chip PLL with an external 4–16 MHz crystal oscillator input. The device also supports 50 MHz operation in normal mode for lower-power applications. All timing-critical peripherals-including eFlexPWM and ADC-scale synchronously with the core clock, ensuring deterministic execution in motor control loops.

Does the MC56F81648LVLH support LIN communication?

Yes, the MC56F81648LVLH supports LIN 2.2 slave functionality through its two QSCI modules. Each QSCI provides hardware LIN frame formatting, checksum calculation, and automatic response handling without CPU intervention. The MC56F81648LVLH meets ISO 17987-4 physical layer requirements and supports baud rates up to 20 kbps, making it suitable for automotive body electronics and industrial sensor networks where LIN simplifies wiring and reduces system cost.

How many analog-to-digital converter channels does the MC56F81648LVLH have?

The MC56F81648LVLH integrates two independent 12-bit cyclic ADCs, each supporting up to 8 external analog input channels (ADCA0–ADCA7 and ADCB0–ADCB7). Both ADCs feature programmable x1/x2/x4 gain amplifiers, 10-cycle single-conversion latency, and hardware triggering via the inter-module crossbar-enabling synchronized sampling of current and voltage in three-phase inverter applications without software overhead.

What package type and pin count does the MC56F81648LVLH use?

The MC56F81648LVLH is housed in a 48-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. This package provides dedicated analog power (VDDA/VSSA) and digital power (VDD/VSS) pins, JTAG debug interface (TCK/TDI/TDO/TMS), and GPIO multiplexing for all peripherals. Pin assignments match the MC56F81xxx family's 48-pin variant, enabling design reuse across compatible devices in the series.

Does the MC56F81648LVLH include hardware security features?

Yes, the MC56F81648LVLH includes multiple hardware security features: a configurable windowed COP watchdog compliant with EN60730 Class B, an External Watchdog Monitor (EWM) with independent safe-mode output, and a hardware CRC-16/32 generator supporting programmable polynomials and seed values. These features support functional safety requirements in industrial and medical power systems, enabling runtime integrity checks and fail-safe shutdown without external components.