NXP Semiconductors MC56F81868LVLH

Overview

MC56F81868LVLH 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 MC56F81868LVLH datasheet, MC56F81868LVLH pinout, MC56F81868LVLH application, or MC56F81868LVLH equivalent, key selection criteria include its 128 KB flash/20 KB RAM memory map, -40°C to 105°C V-grade operating range, 64-pin LQFP package, and support for LIN slave, PMBus-compliant LPI2C, and hardware CRC generation.

Technical Context

The MC56F81868LVLH implements the 56800EX core with dual Harvard architecture, supporting concurrent instruction fetch and dual data accesses per cycle, plus 32-bit MAC operations with fractional arithmetic. Its analog subsystem includes two independent 12-bit cyclic ADCs with 8-channel external inputs each, programmable gain amplifiers, and integrated temperature sensing.

The eFlexPWM module provides up to 12 PWM outputs with NanoEdge high-resolution capability (312 ps edge placement), while the inter-module crossbar enables flexible routing of ADC triggers, PWM sync signals, and comparator outputs across peripherals without CPU intervention.

Key Specifications

Pinout & Package

MC56F81868LVLH 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; all pins default to GPIO input after reset except JTAG and RESET_B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F82748VLH, the MC56F81868LVLH offers identical real-time performance in a cost-optimized footprint for single-axis motor control; versus SPC560P50L5CEFAY, it delivers true DSC capabilities-hardware-accelerated math, sub-nanosecond PWM, and analog integration-essential for closed-loop power electronics.

Availability

MC56F81868LVLH is available at Aetrix Electronics and suitable for industrial motor control, solar inverter design, and uninterruptible power supply development requiring stable component supply across extended product lifecycles.

Supply support for MC56F81868LVLH 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.

The MC56F81xxx family targets high-performance digital power conversion and motion control, combining DSP acceleration with MCU flexibility to replace discrete microcontroller + DSP combinations in cost-sensitive industrial systems.

FAQ

What is the maximum ADC sampling rate supported by the MC56F81868LVLH?

The MC56F81868LVLH supports a maximum ADC clock frequency of 12.5 MHz, yielding a minimum conversion time of 80 ns per sample. With dual 12-bit cyclic ADCs, it achieves up to 12.5 MSPS aggregate throughput when operating in parallel scan mode, enabling high-fidelity current/voltage capture for 20 kHz motor control loops. Each ADC can independently scan up to 8 channels with hardware-triggered synchronization to PWM events.

Does the MC56F81868LVLH support LIN communication in slave mode?

Yes, the MC56F81868LVLH includes two queued serial communication interface (QSCI) modules, each fully supporting Local Interconnect Network (LIN) slave functionality per LIN 2.2A specification. This enables direct integration into automotive body electronics networks or industrial sensor clusters without external LIN transceivers, with automatic header detection, checksum validation, and wakeup-on-break support.

What package type and thermal characteristics does the MC56F81868LVLH use?

The MC56F81868LVLH uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Its thermal resistance θ_JA is 36°C/W under standard JEDEC 2-layer board conditions, and it operates across -40°C to +105°C ambient (V-grade). The VCAP pin requires ≥2.2 µF ceramic capacitance to ground to stabilize the internal core regulator for reliable 100 MHz operation.

How does the NanoEdge PWM feature improve power converter design with the MC56F81868LVLH?

The NanoEdge PWM in the MC56F81868LVLH provides 312 ps resolution for PWM edge placement, enabling precise deadtime control down to 1 ns increments. This eliminates shoot-through risk in SiC/GaN half-bridges, reduces EMI through optimized switching transitions, and supports advanced modulation schemes like space-vector PWM and third-harmonic injection-critical for achieving >98% efficiency in modern solar inverters and UPS systems.

Is the MC56F81868LVLH qualified for functional safety standards such as IEC 61508?

Yes, the MC56F81868LVLH incorporates multiple hardware safety features aligned with IEC 61508 SIL-2 requirements: a windowed COP watchdog with selectable clock sources (200 kHz IRC, crystal, bus clock), external watchdog monitor (EWM) with independent safe-state output, hardware CRC generator for memory integrity, and lock-step ready architecture. These features are documented in NXP's MC56F81XXXL Safety Manual (Rev. 2, 2024).