NXP Semiconductors MC56F80748MLH

Overview

MC56F80748MLH from NXP Semiconductors is a 32-bit digital signal controller (DSC) based on the 56800EF core, delivering 100 MIPS at 100 MHz. It integrates dual 12-bit ADCs with x1/x2/x4 programmable gain amplifiers, two operational amplifiers (gain up to x16), three analog comparators with integrated 8-bit DAC references, and an eFlexPWM module supporting up to 8 channels with 312 ps NanoEdge resolution. It targets industrial motor control, solar inverters, and UPS systems requiring real-time signal processing and high-precision PWM timing.

For engineers reviewing the MC56F80748MLH datasheet, MC56F80748MLH pinout, MC56F80748MLH application, or MC56F80748MLH equivalent, key selection criteria include its 64 KB flash / 8 KB RAM memory map, -40°C to 105°C V-grade operating range, 64-pin LQFP package, and support for LIN slave, QSPI, and LPI2C (PMBus-compatible) interfaces in safety-critical embedded control designs.

Technical Context

The MC56F80748MLH implements a unified 32-bit 56800EF architecture combining DSP acceleration (eFPU, CORDIC engine) and MCU control features. Its eFlexPWM supports fractional delay and arbitrary edge placement with hardware deadtime insertion per complementary pair, enabling precise gate drive for three-phase inverters.

Analog subsystem integration includes synchronized dual ADC triggering via crossbar events, configurable OPAMP modes (PGA, differential, low-pass filter), and comparator hysteresis with interrupt-on-edge capability - all coordinated through the Inter-Module Crossbar and Event Generator for deterministic real-time response.

Key Specifications

Pinout & Package

MC56F80748MLH uses a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are multiplexed via GPIOx_PER and SIM GPSx registers; primary reset state assigns pins to core peripherals including ADC inputs, PWM outputs, and communication interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F80746MLH and MC56F80648MLH, the MC56F80748MLH provides full memory headroom for complex control stacks and retains both QSCI modules plus eQDC - making it the only variant in the family qualified for dual-LIN automotive body control and high-resolution motor position sensing.

Availability

MC56F80748MLH 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 temperature ranges and long production lifecycles.

Supply support for MC56F80748MLH 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 microcontrollers and power management.

The MC56F80xxx family was designed specifically for real-time embedded control in energy-efficient power conversion systems, integrating DSP-grade math acceleration with robust analog peripherals and functional safety features for industrial-grade reliability.

FAQ

What is the maximum ADC sampling rate supported by the MC56F80748MLH?

The MC56F80748MLH supports a maximum ADC clock frequency of 12.5 MHz, enabling single conversions in 10 clock cycles (80 ns) and additional conversions in 8 clock cycles (64 ns). With dual 14-channel ADCs and parallel scan mode, this allows sustained sampling rates up to 12.5 MSPS across interleaved channels - sufficient for real-time current loop control in 20 kHz switching inverters. The MC56F80748MLH's programmable gain amplifier and hardware-triggered acquisition ensure minimal latency from sensor input to PWM update.

Does the MC56F80748MLH support hardware-based functional safety certification?

Yes, the MC56F80748MLH includes multiple hardware safety mechanisms required for IEC61508 SIL2 and EN60730 Class B compliance: windowed COP watchdog with selectable clock sources (200 kHz IRC, crystal, PLL), External Watchdog Monitor (EWM) with independent safe-state output, CRC generator for memory/data integrity, and lockstep-capable peripherals including eFlexPWM fault handling. These features are documented in NXP's MC56F80xxx Functional Safety Manual, and the MC56F80748MLH is qualified for use in safety-related control loops when implemented per NXP's safety guidelines.

How many independent PWM outputs does the MC56F80748MLH provide, and what is their resolution?

The MC56F80748MLH features an eFlexPWM module supporting up to 12 PWM outputs, with up to 8 channels capable of 312 ps resolution when NanoEdge functionality is enabled. Each channel offers independent control of period, duty cycle, deadtime, and polarity, with hardware-based edge placement that eliminates CPU intervention. This level of precision enables accurate gate drive timing for wide-bandgap devices (SiC/GaN) in high-efficiency power converters - a capability confirmed in the MC56F80748MLH datasheet Section 1.5.1 and validated in NXP's AN5502 application note.

Can the MC56F80748MLH operate with a 200 kHz internal oscillator only, without an external crystal?

Yes, the MC56F80748MLH can operate using only the on-chip 200 kHz IRC oscillator for low-power modes (Wait/Stop), COP watchdog, EWM, and PIT timers. However, full 100 MHz core operation requires the PLL, which needs an external 4–16 MHz crystal or resonator as reference input. The 200 kHz oscillator alone cannot drive the CPU at rated speed, but it enables ultra-low-power wake-up and safety monitoring - a configuration explicitly supported in the MC56F80748MLH's clock tree architecture per Section 1.5.16.1 of the datasheet.

What communication protocols does the MC56F80748MLH support for power management interface?

The MC56F80748MLH supports PMBus-compliant communication via its LPI2C module, which implements Standard, Fast, Fast+, and Ultra Fast I²C modes plus SMBus alert and general call addressing. It also supports LIN 2.2 slave protocol through QSCI0/QSCI1, enabling direct connection to battery management systems (BMS) and digital power supplies. Both interfaces are hardware-accelerated and support interrupt/DMA-driven transfers - ensuring deterministic response in power sequencing and telemetry applications. This dual-protocol capability is specified in Sections 1.5.9 and 1.5.11 of the MC56F80748MLH technical data sheet.