NXP Semiconductors MC56F8346VFVE

Overview

MC56F8346VFVE from NXP (formerly Freescale) is a 16-bit Digital Signal Controller (DSC) built on the 56800E core, delivering up to 60 MIPS at 60 MHz. It integrates dual 6-channel PWM modules, four 12-bit ADCs with simultaneous conversion capability, FlexCAN 2.0B interface, two quadrature decoders, and 128 KB program Flash - designed for real-time motor control in industrial drives and automotive subsystems.

For engineers reviewing the MC56F8346VFVE datasheet, MC56F8346VFVE pinout, MC56F8346VFVE application, or MC56F8346VFVE equivalent, key selection criteria include guaranteed 60 MHz operation, dual PWM fault-tolerant architecture with dead-time insertion, CAN 2.0B compliance, on-chip temperature sensing, and 144-pin LQFP package with 62 GPIOs.

Technical Context

The MC56F8346VFVE implements a dual-Harvard 56800E core with parallel execution units enabling up to six operations per instruction cycle. Its PLL-based clock generator supports external crystal inputs up to 8.4 MHz and delivers stable 60 MHz core frequency with programmable wait states for external memory access.

Peripheral integration includes hardware-synchronized PWM-ADC triggering via Quad Timer C channels, dual independent PWM modules each supporting center/edge-aligned modes and complementary output pairs, and FlexCAN with full 2.0B message filtering and FIFO buffering - all accessible through memory-mapped registers on the IPBus bridge.

Key Specifications

Pinout & Package

MC56F8346VFVE is housed in a 144-pin LQFP (VFVE) package with exposed thermal pad, rated for industrial temperature range (–40°C to +105°C). Pin assignments follow Freescale's standardized 56F8346 signal mapping with dedicated VDD/VSS pairs per I/O bank, separate analog/digital supplies (VDDA/VSSA), and JTAG/EOnCE debug interface pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F8346VFVE, MC56F8323VFVE offers reduced performance and peripheral set at lower cost, while MPC5604B provides higher compute throughput and safety features but requires external PWM hardware and increases BOM complexity.

Availability

MC56F8346VFVE is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart appliance inverters, and power supply monitoring systems requiring stable component supply across extended product lifecycles.

Supply support for MC56F8346VFVE 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.

The MC56F8346VFVE belongs to NXP's legacy 56800E-based DSC product line, engineered specifically for cost-sensitive, real-time motor control where integrated PWM, ADC, and CAN reduce system-level component count and PCB area.

FAQ

What is the maximum operating frequency of the MC56F8346VFVE?

The MC56F8346VFVE operates at a guaranteed maximum core frequency of 60 MHz, delivering up to 60 MIPS performance. This frequency is achieved using the on-chip PLL with an external crystal input ranging from 4 MHz to 8.4 MHz. The MC56F8346VFVE datasheet specifies this rating across the full industrial temperature range (–40°C to +105°C) and under specified supply voltage conditions.

Does the MC56F8346VFVE include an integrated CAN controller?

Yes, the MC56F8346VFVE integrates a FlexCAN module compliant with CAN Specification Version 2.0B. It supports standard and extended message formats, has configurable message buffers, and includes hardware-based acceptance filtering and error confinement. This eliminates the need for an external CAN transceiver PHY in many designs, though a physical layer driver remains required for bus connection.

How many PWM channels does the MC56F8346VFVE support?

The MC56F8346VFVE supports twelve PWM output channels via two independent 6-channel PWM modules (PWMA and PWMB). Each module provides complementary output pairs with programmable dead time, fault input monitoring, and synchronization to ADC conversions. This architecture enables full-bridge and three-phase inverter control without external logic.

What ADC resolution and configuration options are available on the MC56F8346VFVE?

The MC56F8346VFVE includes four independent 12-bit analog-to-digital converters (ADCs), each supporting up to four simultaneous conversions using quad 4-pin multiplexed inputs. Total input channel count is 16 (AD0–AD15), and conversions can be hardware-triggered by PWM reload events or Quad Timer C outputs to ensure precise timing alignment in motor control applications.

Is the MC56F8346VFVE pin-compatible with other devices in the 56F83xx family?

The MC56F8346VFVE shares the same 144-pin LQFP (VFVE) package footprint with MC56F8323VFVE and MC56F8347VFVE, but pin functions differ significantly due to peripheral variations. For example, FlexCAN signals (CANH/CANL) and second PWM module outputs are not present on MC56F8323VFVE. Direct replacement requires verification of signal mapping, register compatibility, and firmware adaptation.