NXP Semiconductors MC56F82746VLFR

Overview

MC56F82746VLFR from NXP Semiconductors is a 32-bit digital signal controller (DSC) based on the 56800EX core, delivering up to 100 MIPS at 100 MHz in fast mode. It integrates dual 12-bit ADCs (2×8 channels), two 12-bit DACs, four analog comparators with 6-bit DAC references, one eFlexPWM module with 8 high-resolution NanoEdge PWM outputs, and supports industrial motor control (BLDC/PMSM), switched-mode power supplies, and photovoltaic systems.

For engineers reviewing the MC56F82746VLFR datasheet, MC56F82746VLFR pinout, MC56F82746VLFR application, or MC56F82746VLFR equivalent, key selection criteria include its 48-pin LQFP package, -40°C to 105°C V-temp grade, 64 KB flash/8 KB RAM, dual QSCI/QSPI interfaces, and AEC-Q100-compliant variant availability for automotive-adjacent embedded control.

Technical Context

The MC56F82746VLFR implements the 56800EX core with modified dual-Harvard architecture-three address buses, four data buses (two 32-bit primary), and support for concurrent instruction fetch + dual data access per cycle. Its unified DSP/MCU architecture enables C-efficient code for real-time control algorithms while maintaining fractional/integer arithmetic and single-cycle 32×32→64-bit MAC operations.

Peripherals are interconnected via dual inter-module crossbar switches supporting hardware-synchronized ADC-PWM triggering, comparator-DAC referencing, and fault-driven eFlexPWM shutdown. The device uses a programmable PLL (200–400 MHz output) fed by an external 4–16 MHz crystal or internal 8 MHz ROSC, with independent 200 kHz oscillator for COP/EWM/PIT operation in low-power modes.

Key Specifications

Pinout & Package

MC56F82746VLFR is housed in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions follow NXP's standardized MC56F827xx signal mapping; all GPIO pins default to input after reset and require explicit configuration via GPIOx_PER and SIM GPSx registers.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC56F82746VLFR, the MC56F82748VLH offers full feature parity plus CAN and extra I/O at higher cost and size, while the MC56F82743VLC trades flash, peripherals, and pin count for footprint and cost reduction-making MC56F82746VLFR the balanced mid-tier option for industrial motor and power control.

Availability

MC56F82746VLFR is available at Aetrix Electronics and suitable for industrial motor control, switched-mode power supplies, photovoltaic inverters, and uninterruptible power supplies requiring stable component supply and long-term lifecycle assurance.

Supply support for MC56F82746VLFR 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, IoT, mobile, and communication infrastructure markets.

The MC56F827xx family belongs to NXP's high-performance digital signal controller product line, designed specifically for deterministic real-time control in power electronics, motor drives, and energy conversion systems.

FAQ

What is the maximum operating frequency of the MC56F82746VLFR core?

The MC56F82746VLFR core operates at up to 100 MHz in fast mode, delivering 100 MIPS performance. This frequency is achieved using the on-chip PLL locked to an external 4–16 MHz crystal or internal 8 MHz relaxation oscillator. The device also supports 50 MHz operation in normal mode for lower-power applications. All timing-critical peripherals-including eFlexPWM, ADC, and timers-are fully functional at 100 MHz, and the MC56F82746VLFR datasheet specifies AC electrical characteristics across the full temperature range (-40°C to +105°C) at this speed.

Does the MC56F82746VLFR support CAN communication?

No, the MC56F82746VLFR does not include the MSCAN module. CAN capability is present only in select members of the MC56F827xx family such as the MC56F82748VLH and MC56F82748MLH. The MC56F82746VLFR provides two QSCI modules (LIN slave capable), two QSPI modules, and one I²C/SMBus port-but no Controller Area Network interface. For CAN-based designs, engineers should consider the MC56F82748VLH as a drop-in alternative with identical core and memory specs but added MSCAN and expanded pin count.

What are the analog input voltage limits for the MC56F82746VLFR ADC channels?

The MC56F82746VLFR ADC inputs accept single-ended or differential signals within the 0 V to VDDA (3.3 V) range. With the internal programmable gain amplifier (PGA) configured at x1, x2, or x4, the effective input range scales accordingly-for example, at x4 gain, the measurable differential input span is ±0.4125 V (full-scale 12-bit resolution). Input protection includes current injection limiting, and the ADC supports unipolar differential, pseudo-differential, and true differential modes. All analog inputs must remain within VSSA – 0.3 V to VDDA + 0.3 V to avoid damage, per the MC56F82746VLFR absolute maximum ratings.

Is the MC56F82746VLFR pin-compatible with other MC56F827xx variants?

Yes, the MC56F82746VLFR is pin-compatible with other 48-pin LQFP variants in the MC56F827xx family, including the MC56F82746MLF (M-temp grade) and MC56F82743VLF. Signal assignments, power/ground pin locations, and JTAG interface pins match exactly across these 48-pin packages. However, peripheral enablement differs: the MC56F82746VLFR enables both QSCI and QSPI modules, while the MC56F82743VLF disables one QSCI and one QSPI. Firmware must verify peripheral availability before initialization, as register-level differences exist despite identical pinouts.

What debug interfaces does the MC56F82746VLFR support?

The MC56F82746VLFR supports JTAG-based debugging via the standard TDI, TDO, TCK, and TMS pins (Pins 48, 46, 1, and 47 in 48-pin LQFP), enabling full boundary-scan and real-time emulation using NXP's EOnCE (Enhanced On-Chip Emulation) technology. This allows non-intrusive, cycle-accurate debugging independent of CPU speed, including breakpoints, watchpoints, and live register/memory inspection. No SWD or SWIM interface is supported-the MC56F82746VLFR relies exclusively on IEEE 1149.1 JTAG for development and production programming, and the JTAG chain must be terminated correctly per NXP's layout guidelines to ensure reliable debug session stability.