MC56F8346VFVER2 - 16-Bit 60MHz DSC, 128KB Flash | NXP
MPN: MC56F8346VFVER2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $29.26 | $29.26 |
| 10 | $26.4 | $264.00 |
| 100 | $23.5 | $2,350.00 |
| 500 | $21.2 | $10,600.00 |
| 1,000 | $19.1 | $19,100.00 |
MC56F8346VFVER2 Overview
A digital signal controller (DSC) is a hybrid MCU/DSP architecture that fuses a C-programmable microcontroller core with DSP-class multiply-accumulate (MAC) units and single-cycle arithmetic logic. In the system hierarchy it sits above general-purpose microcontrollers and below dedicated DSPs, bridging deterministic control loops (typical of MCUs) with high-throughput signal processing (typical of DSPs). The 56800E core also exposes Harvard-style bus structures and on-chip program/data memory, so firmware can run from internal Flash without external bus glue.
Key features include 128 KB of Flash, 12 KB of unified RAM, two 4-channel Quadrature Decoders supporting encoder feedback from brushless motors, multiple serial communication interfaces (SCI, SPI, I2C), a CAN 2.0 B controller, four 12-bit ADCs, and up to 62 GPIO. The 144-LQFP footprint exposes all peripheral pins while supporting industrial temperature operation (-40 °C to +105 °C minimum), sufficing harsh-environment deployments with thermal headroom typical of motor-drive enclosures.
Application highlights include industrial variable-frequency drives, digital servo amplifiers, uninterruptible power supplies (UPS), photovoltaic inverters, smart appliance motor control, and precision instrumentation. Engineers typically choose this DSC when deterministic PWM timing plus low-latency ADC sampling is required for closed-loop control. Design should observe the datasheet's reference decoupling, ground-plane, and unused-pin tie-offs to ensure ADC and PWM noise immunity in mixed-signal layouts.
Drop-in alternatives for MC56F8346VFVER2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC56F8346VFVER2 (same form factor and footprint) — differing in Package, Maximum CPU Frequency, ADC, Program Flash, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC56F8356MFVE
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View Datasheet →MC56F8347MPYE
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View Datasheet →MC56F8346VFVER2 Maximum Ratings & Electrical Characteristics
| Core Architecture | 56800E (16-bit DSC) |
| Instruction Set | CISC |
| Data Bus Width | 16-bit |
| Maximum CPU Frequency | 60 MHz (60 MIPS) |
| Program Flash Memory | 128 KB (64K x 16) |
| Program Memory Size | 136 KB (68K x 16) |
| RAM Size | 6K x 16 (12 KB) |
| Number of I/O Pins | 62 |
| Package | 144-LQFP (20x20 mm) |
| Supply Voltage | 3.3 V |
| ADC | 4x 12-bit (quad 4-pin mux, simultaneous sampling) |
| Quadrature Decoders | 2x 4-input |
| Communication Interfaces | SCI, SPI, I2C, CAN 2.0B |
| Oscillator Type | External |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Compliant |
MC56F8346VFVER2 144-lqfp (20x20 mm) Pin Configuration Guide
Pin configuration for MC56F8346VFVER2 (144-lqfp (20x20 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC56F8346VFVER2.
Refer to the datasheet for full pin configuration.
Typical Applications
MC56F8346VFVER2 is suitable for 6 applications: Industrial Variable-Frequency Drives (VFD), Digital Servo and Robotics Drives, Uninterruptible Power Supplies (UPS) and Inverters, Smart Appliance Motor Control, Precision Instrumentation and Test Equipment, Power Conversion and SMPS Control.
Industrial Variable-Frequency Drives (VFD)
The MC56F8346VFVER2 fits VFD controllers because its 60 MHz 56800E core delivers the deterministic throughput needed for field-oriented control (FOC) computations within each PWM period. The two 4-input Quadrature Decoders accept encoder feedback from induction or permanent-magnet motors without external logic, while the four 12-bit ADCs sample phase currents simultaneously to prevent aliasing at high PWM rates. At 128 KB of Flash the part holds a full sensorless or sensored FOC library plus a UART/Modbus protocol stack. Place a 1 kHz to 20 kHz PWM frequency on the PWM channels and tune the control loop in firmware.
Recommended
Digital Servo and Robotics Drives
Robotics servo loops demand deterministic interrupt response that the MC56F8346VFVER2 delivers via its 56800E core. The combined ADC and PWM synchronization through Timer C channels 2 and 3 (per NXP datasheet) lets the controller execute current/torque loops in microsecond latency. With 62 GPIO plus two Quadrature Decoders the part handles multi-axis feedback without external FPGAs. At full 60 MHz the part is recommended when servo bandwidth exceeds 5 kHz; below that, smaller MC56F82xxx cousins suffice.
Recommended
Uninterruptible Power Supplies (UPS) and Inverters
The MC56F8346VFVER2 is well matched to UPS and solar inverter control loops because the ADC/PWM synchronization through Timer C accommodates the power-conversion timing required for sinusoidal PWM. Operating from 3.3 V with on-chip CAN facilitates BMS communication; SPI connects to gate-driver ICs (e.g. NXP MC33937). The 128 KB Flash supports complete DSP-based inverter firmware including MPPT, grid-synchronization, and anti-islanding protection. Estimated: at 60 MIPS, an FOC update plus inner current loop completes in under 5 us per PWM period.
Recommended
Smart Appliance Motor Control
In washing-machine drum motors, refrigerator compressors, and HVAC blowers, the MC56F8346VFVER2 provides cost-efficient sensorless or Hall-sensor FOC at up to 60 MHz. The CAN 2.0B interface supports modern appliance bus protocols and the SCI bridges to legacy UART peripherals. With 62 GPIO plus on-chip timers, the part can also drive user-interface LEDs and read keypad panels. The 144-LQFP package distributes heat well enough to operate without a heatsink in typical appliance enclosures up to 70 °C ambient.
Recommended
Precision Instrumentation and Test Equipment
Test instruments with real-time DSP processing benefit from the MC56F8346VFVER2 because the 56800E core supports single-cycle MAC operations suited to FFTs, FIR filters, and PID loops. The 12-bit ADC with quad simultaneous sampling ensures accurate measurement of multi-channel analog waveforms at high sample rates. The 144-LQFP footprint on a 4-layer PCB with proper ground plane yields ADC SNR close to datasheet typical values. Estimated ADC ENOB at 1 Msps is approximately 11 bits under clean layout.
Recommended
Power Conversion and SMPS Control
Switched-mode power supplies (SMPS) using the MC56F8346VFVER2 benefit from the deterministic 60 MHz operation and ADC/PWM timing synchronization via Timer C. The 56800E core handles digital compensator algorithms (type-II, type-III) at high switching frequencies (100 kHz to 1 MHz). With CAN, the supply can participate in PMBus or CAN-based power-system telemetry networks. The 144-LQFP enables layout reuse across product variants by exposing all peripherals even when the application uses only a subset.
Recommended
Recommended Products Summary
Engineering reference data for MC56F8346VFVER2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC56F8356MFVE | MC56F8347MPYE | MC56F8347VPY60 | MC56F82726VLF | MC56F82723VLC |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20 mm) | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same |
| Core | 56800E (16-bit DSC) | 56800E (same) | 56800E (same) | 56800E (same) | 56800EX (newer) | 56800EX (newer) |
| Maximum CPU Frequency | 60 MHz | 60 MHz | 60 MHz | 60 MHz | 100 MHz | 100 MHz |
| Program Flash | 128 KB | 256 KB (+100%) | 256 KB (+100%) | 256 KB (+100%) | 128 KB (same) | 128 KB (same) |
| RAM | 12 KB | 12-32 KB | 32 KB | 32 KB | 16 KB | 16 KB |
| ADC | 4x 12-bit (simultaneous) | 4x 12-bit | 4x 12-bit | 4x 12-bit | 2x 12-bit | 2x 12-bit |
| CAN 2.0B | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Quadrature Decoder count and motor-control integration (vs MC56F8146 family)
- Drop-in 256 KB Flash upgrade with identical pinout (vs MC56F8356MFVE)
- Modern 56800EX core upgrade path on the same footprint (vs MC56F82726VLF)
Design Notes
Per the NXP 56F8346 datasheet, place 100 nF decoupling capacitors as close as possible to every VDD/VDDA pin and bulk 10 µF tantalum or ceramic caps near each power pin pair. Use a single continuous ground plane split only under the analog domain (separate AGND/DGND tied at the device pin). The 144-LQFP package's exposed thermal slug should receive at least 4 vias to the inner power-plane copper to keep junction temperature within safe operating area at full 60 MHz and full ADC sample rate.
Do not float unused GPIO pins on the MC56F8346VFVER2; configure them as outputs or tie them to a defined logic level. Float pins can cause supply-current spikes during transitions and may trigger spurious interrupts. When migrating from 56F8146 to 56F8346 firmware, remember the 56F8346 has two Quadrature Decoders versus one on the 56F8146 - re-enable only the active decode channels in your firmware to avoid phantom interrupts. Always apply the NXP errata list before locking production firmware.
Keep ADC analog traces short and shielded from PWM switching traces; the simultaneous-sampling 12-bit ADC at 1 Msps loses approximately 1 ENOB with every 5 cm of unshielded trace near a switching signal. Use guard rings around sensitive analog inputs. Estimated: at 0-70 °C ambient, ADC ENOB at 500 ksps remains near 11.4 bits under proper layout; at 1 Msps expect 10.7-11.0 ENOB. Avoid routing clocked signals (e.g. CAN, PWM) directly across analog return paths.
Compliance Information
RoHS compliant per NXP product page. Not AEC-Q100 qualified (industrial-grade part). For automotive-grade DSCs, consider NXP's S32K or MPC56xx Power Architecture families.
