NXP Semiconductors MC56F8037MLH

Overview

MC56F8037MLH from NXP Semiconductors (formerly Freescale) is a 16-bit Digital Signal Controller (DSC) with 64KB Flash, 8KB unified RAM, dual 12-bit ADCs (2.67 MSPS), six-channel PWM (96MHz clock, 15-bit resolution), and integrated CAN 2.0A/B, I2C, QSPI, and QSCI interfaces. It targets real-time motor control in industrial inverters and appliance compressors.

For engineers reviewing the MC56F8037MLH datasheet, MC56F8037MLH pinout, MC56F8037MLH application, or MC56F8037MLH equivalent, this page delivers verified core specs, validated peripheral roles, confirmed package mapping to LQFP-80, and two rigorously cross-checked alternative DSCs for motion control design continuity.

Technical Context

The MC56F8037MLH implements the 56800E dual-Harvard core with parallel ALU/MAC/AGU execution units, enabling up to 32 MIPS at 32MHz. Its architecture supports hardware DO/REP loops and C-efficient DSP addressing for deterministic motor control code.

Peripheral integration includes synchronized ADC-PWM triggering via dedicated SYNC0/SYNC1 signals, programmable fault inputs with digital filtering on all six PWM outputs, and MSCAN with five receive buffers and three transmit buffers for robust fieldbus communication.

Key Specifications

Pinout & Package

LQFP-80 package with 53 GPIO pins (5V-tolerant), dual VDD/VSS pairs, dedicated VDDA/VSSA analog supplies, VCAP decoupling pins (pins 28 & 49), and JTAG/EOnCE debug interface (TCK/TDI/TMS/TDO).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F8037MLH, MC56F82748VLH offers expanded memory and connectivity for scalable industrial systems, while TMS320F28027FPTT provides higher CPU performance in a smaller package but lacks CAN and dual ADCs-making it suitable only for non-networked, single-sensor applications.

Availability

MC56F8037MLH is available at Aetrix Electronics and suitable for industrial motor control, home appliance inverters, and smart power supply designs requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.

Supply support for MC56F8037MLH 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 delivering secure, connected solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.

The MC56F8037MLH belongs to NXP's 56800E-based Digital Signal Controller family, engineered specifically for cost-effective, real-time motor and power conversion control with integrated analog peripherals and fieldbus interfaces.

FAQ

What is the maximum operating frequency of the MC56F8037MLH core?

The MC56F8037MLH core operates at up to 32MHz, delivering 32 MIPS performance. This frequency is achieved using the on-chip PLL with an external crystal (1–16MHz) or internal relaxation oscillator. The MC56F8037MLH datasheet specifies that core timing remains valid across the full industrial temperature range (–40°C to +105°C) under rated VDD conditions.

Does the MC56F8037MLH support CAN FD or only classical CAN 2.0?

The MC56F8037MLH implements Freescale's MSCAN module compliant exclusively with CAN 2.0A/B protocols at up to 1Mbps. It does not support CAN FD features such as flexible data-rate or extended payload length. For CAN FD capability, designers must select newer NXP S32K or i.MX RT families, as the MC56F8037MLH's CAN peripheral is fixed to classical frame format per its Rev. 8 datasheet.

How many ADC channels does the MC56F8037MLH provide, and are they shared between modules?

The MC56F8037MLH integrates two independent 12-bit ADC modules (ADCA and ADCB), each with eight dedicated input channels (ANA0–ANA7 and ANB0–ANB7), totaling 16 physically distinct analog inputs. These channels are not shared-each module has its own sample-and-hold, conversion logic, and 16-word result buffer, enabling true simultaneous sampling as confirmed in Section 1.1.4 of the datasheet.

What is the purpose of the VCAP pins on the MC56F8037MLH, and what capacitor value is required?

The MC56F8037MLH uses two VCAP pins (pins 28 and 49) to stabilize the internal voltage regulator supplying the core logic. Per the Rev. 8 datasheet Section 2.2 and Revision History Rev. 5, a 2.2µF ceramic capacitor (X7R, 10V rating) must be placed between each VCAP pin and VSS. These capacitors filter high-frequency noise and ensure stable core voltage during PWM switching transients.

Can the MC56F8037MLH operate without an external crystal oscillator?

Yes, the MC56F8037MLH can operate using its on-chip relaxation oscillator, which provides a nominal 200kHz output in Standby mode (per Table 10-12, Rev. 8). For full-speed operation, the internal oscillator is multiplied by the PLL to reach 32MHz. While functional for basic initialization and low-power modes, the relaxation oscillator's ±50% frequency tolerance makes it unsuitable for time-critical communications like CAN or QSCI-external crystal (1–16MHz) is required for those applications.