NXP Semiconductors MC56F8345MFGE

Overview

MC56F8345MFGE from NXP (formerly Freescale) is a 16-bit Digital Signal Controller (DSC) combining DSP and MCU functionality in a unified C-efficient architecture, operating at up to 60 MHz core frequency (60 MIPS), featuring 128 KB Program Flash, 8 KB Data Flash, dual 6-channel PWM modules, four 12-bit ADCs, FlexCAN 2.0B, and temperature sensing - deployed in motor control systems for BLDC/ACIM drives.

For engineers reviewing the MC56F8345MFGE datasheet, MC56F8345MFGE pinout, MC56F8345MFGE application, or MC56F8345MFGE equivalent, key selection criteria include PWM dead-time programmability, ADC-PWM synchronization via Quad Timer C, on-chip regulator support, CAN 2.0B compliance, and 128-pin LQFP package compatibility with industrial motion control PCB layouts.

Technical Context

The MC56F8345MFGE integrates a 56800E dual-Harvard core with parallel execution units enabling six operations per instruction cycle, supporting hardware DO/REP loops and single-cycle 16×16 MAC with four 36-bit accumulators. Its memory subsystem permits three simultaneous accesses across program/data/flash domains.

Peripheral coordination is tightly coupled: PWM modules generate SYNC signals routed to Quad Timer C channels 2–3, which trigger synchronized ADC conversions; FlexCAN operates independently with dedicated 2-pin TX/RX port; and quadrature decoders feed position/speed data directly into timer-based motion control loops without CPU intervention.

Key Specifications

Pinout & Package

MC56F8345MFGE is housed in a 128-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments follow Freescale's standardized 56F8345 signal mapping, including dedicated VCAP, VREFH/VREFN, TEMP_SENSE, and dual PWM fault input groups.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F8345MFGE, MC56F8323VFA offers reduced performance and peripheral set at lower cost, while MPC5604B delivers higher compute throughput and CAN FD but requires external regulation and increases PCB complexity.

Availability

MC56F8345MFGE is available at Aetrix Electronics and suitable for motor control, industrial automation, automotive subsystems, and smart appliance designs requiring stable component supply and long-term production continuity.

Supply support for MC56F8345MFGE 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 markets, with deep heritage in microcontrollers and digital signal processing.

The MC56F8345MFGE belongs to NXP's 56800E-based Digital Signal Controller product line, engineered specifically for high-efficiency, real-time motor and power conversion control where deterministic timing and integrated analog peripherals are critical.

FAQ

What is the maximum operating frequency of the MC56F8345MFGE?

The MC56F8345MFGE operates at a maximum core frequency of 60 MHz, delivering up to 60 million instructions per second (MIPS). This frequency is achieved using the on-chip PLL with an external crystal up to 8.4 MHz, and it enables sub-20 µs execution of complex motor control algorithms. The MC56F8345MFGE maintains timing integrity across all peripherals-including PWM, ADC, and CAN-at this rated speed.

Does the MC56F8345MFGE include an integrated voltage regulator?

Yes, the MC56F8345MFGE features an optional on-chip voltage regulator that generates a stable 2.6–3.3 V supply for internal logic and memories. It requires an external 4.7 µF capacitor on the VCAP pin for decoupling. When enabled, this regulator eliminates the need for an external LDO in many motor control designs, reducing system cost and board space. The MC56F8345MFGE allows the regulator to be disabled if external regulation is preferred.

How many PWM channels does the MC56F8345MFGE support, and what advanced features do they offer?

The MC56F8345MFGE supports twelve PWM outputs across two independent 6-channel modules (PWMA and PWMB). Each module provides complementary output pairs with programmable dead time, edge- and center-aligned modes, cycle-by-cycle current limiting, and fault protection via dedicated FLT_A/FLT_B inputs. These capabilities make the MC56F8345MFGE especially suited for inverter gate driving in BLDC, ACIM, and stepper motor applications.

Can the MC56F8345MFGE perform synchronized ADC sampling with PWM signals?

Yes, the MC56F8345MFGE supports hardware-synchronized ADC sampling using Quad Timer C channels 2 and 3. PWM modules can generate SYNC pulses that directly trigger ADC conversions, ensuring precise alignment between switching edges and current/voltage measurements. This synchronization is essential for high-fidelity motor current reconstruction and is fully supported in the MC56F8345MFGE without software intervention.

What communication interfaces are integrated into the MC56F8345MFGE?

The MC56F8345MFGE integrates FlexCAN 2.0B-compliant controller, two Serial Communication Interfaces (SCI), and two Serial Peripheral Interfaces (SPI). The FlexCAN interface supports bit rates up to 1 Mbps and includes message filtering and error handling compliant with ISO 11898. Both SCIs and SPIs are multiplexed with GPIO pins, allowing flexible routing. All interfaces are accessible in the MC56F8345MFGE's 128-pin LQFP package.