NXP Semiconductors MC56F81748LVLH

Overview

MC56F81748LVLH from NXP Semiconductors is a 32-bit digital signal controller (DSC) based on the 56800EX core, delivering 100 MIPS at 100 MHz in fast mode. It integrates dual 12-bit ADCs with x1/x2/x4 programmable gain amplifiers, an eFlexPWM module with 312 ps NanoEdge resolution, and supports industrial motor control, solar inverters, and UPS systems.

For engineers reviewing the MC56F81748LVLH datasheet, MC56F81748LVLH pinout, MC56F81748LVLH application, or MC56F81748LVLH equivalent, key selection criteria include its 64-pin LQFP package, -40°C to 105°C V-grade temperature range, 128 KB flash/20 KB RAM memory configuration, and support for LIN slave, QSPI, and dual LPI2C interfaces with PMBus compliance.

Technical Context

The MC56F81748LVLH implements the 56800EX core with dual Harvard architecture, supporting concurrent instruction fetches and dual data accesses per cycle, plus hardware DO/REP loops and bit-reverse addressing for FFT acceleration. Its unified DSP/MCU architecture enables efficient C compilation and zero-overhead context switching via full register stack shadowing.

Peripherals are tightly coupled via the Inter-Module Crossbar and Event Generator, enabling hardware-synchronized ADC-PWM triggering, comparator-DAC referencing, and DMA-driven sensor-to-actuator signal chains. The eFlexPWM submodule delivers 8-channel NanoEdge PWM with 312 ps edge placement resolution and independent deadtime control per complementary pair.

Key Specifications

Pinout & Package

MC56F81748LVLH is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are multiplexed via GPIOx_PER and SIM GPSx registers; primary reset state defaults to signal function unless reconfigured.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F81768LVLH, MC56F81748LVLH offers identical memory and NanoEdge PWM capability but is distinguished by confirmed QSPI inclusion per datasheet Table 1; versus MC56F81648LVLH, it provides 2× more ADC channels, full 8-channel NanoEdge PWM, and QSPI-enabling higher-fidelity sensing, faster switching control, and external memory expansion.

Availability

MC56F81748LVLH is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, and uninterruptible power supplies requiring stable component supply across multi-year production cycles.

Supply support for MC56F81748LVLH 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 applications, with deep expertise in mixed-signal control processors.

The MC56F81xxxL family was designed specifically for high-performance digital power conversion and motion control, integrating DSP-grade math acceleration with MCU-level peripheral flexibility in a single chip.

FAQ

What is the maximum operating frequency of the MC56F81748LVLH core?

The MC56F81748LVLH core operates at up to 100 MHz in fast mode, delivering 100 MIPS performance. This frequency is achieved using the internal PLL with an 8–16 MHz crystal reference input. In normal mode, the core runs at 50 MHz. Both modes are software-selectable and supported across the full -40°C to 105°C V-grade temperature range. The MC56F81748LVLH datasheet specifies timing parameters validated at 100 MHz under worst-case voltage (2.7 V) and temperature conditions.

Does the MC56F81748LVLH support LIN communication?

Yes, the MC56F81748LVLH supports LIN slave functionality through its two queued serial communication interface (QSCI) modules. Each QSCI implements hardware LIN protocol handling including sync-break detection, identifier filtering, checksum calculation, and response timeout monitoring-all without CPU intervention. This allows the MC56F81748LVLH to serve as a reliable node in automotive body electronics or industrial sensor networks compliant with LIN 2.2A specification.

How many analog-to-digital converter channels does the MC56F81748LVLH have?

The MC56F81748LVLH integrates two independent 12-bit cyclic ADCs: ADCA and ADCB. ADCA supports 8 external input channels, and ADCB also supports 8 external input channels, for a total of 16 single-ended or 8 differential analog inputs. Each ADC includes a programmable gain amplifier (x1/x2/x4), hardware-triggered sampling synchronized to PWM events via the crossbar, and on-chip temperature sensing. This configuration is confirmed in Table 1 of the MC56F81XXXL datasheet for the "748" variant.

What package type is used for the MC56F81748LVLH?

The MC56F81748LVLH uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with an exposed thermal pad. This package is explicitly listed in the MC56F81XXXL datasheet Section 5.2 "Part number list" and Table 1 for the "748" variant. Pin assignments-including VDD, VDDA, VCAP, ADC, PWM, and communication interface signals-are fully documented in Section 4 "Pinout" and Table 2 "Signal descriptions" for the 64-pin LQFP variant.

Does the MC56F81748LVLH include hardware cryptographic acceleration?

No, the MC56F81748LVLH does not include dedicated hardware cryptographic accelerators such as AES or SHA engines. Its security features are focused on functional safety and system integrity: a hardware 16/32-bit CRC generator for memory and communication checksums, a windowed COP watchdog with multiple clock source options, and an External Watchdog Monitor (EWM) with safe-mode output. These capabilities support EN60730 Class B and IEC 61508 compliance but do not provide encryption or secure boot functionality.