MC56F8355VFGE - 16-Bit 60MHz DSC 256KB Flash LQFP-128 | NXP
MPN: MC56F8355VFGE ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $51.34 | $51.34 |
| 10 | $47.12 | $471.20 |
| 100 | $42.78 | $4,278.00 |
| 500 | $38.95 | $19,475.00 |
| 1,000 | $36.4 | $36,400.00 |
| 2,500 | $33.85 | $84,625.00 |
MC56F8355VFGE Overview
A digital signal controller is an integrated circuit category that fuses a deterministic microcontroller (MCU) with DSP-oriented multiply-accumulate (MAC) and Harvard-bus execution units. DSCs belong to the broader microprocessor hierarchy: microcontroller -> digital signal controller -> digital signal processor (DSP) -> embedded processor -> semiconductor. They are commonly used in real-time control loops where both fast arithmetic and event-driven peripheral handling are required.
Key feature highlights of the MC56F8355VFGE include 256KB (128K x 16) of Flash program memory, 49 general-purpose I/O pins, and connectivity peripherals spanning CANbus, EBI/EMI, SCI, and SPI. The integrated peripheral set further includes Power-On Reset (POR), Pulse-Width Modulation (PWM) modules, a temperature sensor, and a Watchdog Timer (WDT). These blocks support closed-loop motor control, power conversion, and sensor-fusion applications without external companions.
At the silicon level, the 56800E core uses a dual Harvard architecture with on-chip instruction and data memories, supporting single-cycle 16x16-bit MAC operations. Operating from a 3.3V supply, the device is fabricated on a CMOS process and is intended for industrial temperature environments. The instruction set, JTAG/OnCE debug interface, and integrated analog peripherals reduce external BOM cost in motor drive and digital-power designs.
Typical applications include AC induction motor and BLDC motor control (variable-frequency drives, servo drives), digital power conversion (SMPS, PFC stages), industrial automation, automotive body and chassis subsystems, and uninterruptible power supplies. The combination of PWM timers, ADC-triggered sequencing, and CAN/SPI connectivity suits distributed real-time nodes.
Designers should evaluate the 60MHz throughput, Flash wait-state budget, and ADC sampling latency against target loop rates. Use the on-chip PWM fault inputs and the watchdog timer to meet functional-safety requirements in motor drives. Verify thermal rise on the LQFP-128 footprint with sufficient copper area.
This page synthesizes distributor pricing, drop-in compatible 56F8xxx variants, and practical PCB-layout guidance that is not found in the manufacturer datasheet alone.
Drop-in alternatives for MC56F8355VFGE — 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 MC56F8355VFGE (same form factor and footprint) — differing in Core Architecture, Program Memory Size, Connectivity, Operating Temperature, Package / Case.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC56F8355MFGE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$15.7 / Unit
View Datasheet →MC56F8357VVFE
✅ Drop-In✓ In Stock
$8.36 / Unit
View Datasheet →MC56F8335VFGE
✅ Drop-In📋 Reference alternative (not in catalog)
MC56F8347VVFE
✅ Drop-In✓ In Stock
$17.9 / Unit
View Datasheet →MC56F8356VFVE
✅ Drop-In✓ In Stock
$10.85 / Unit
View Datasheet →MC56F8355VFGE Maximum Ratings & Electrical Characteristics
| Core Processor | 56800E |
| Core Size | 16-Bit |
| Core Architecture | DSC (Digital Signal Controller) |
| Maximum Clock Speed | 60 MHz |
| Program Memory Size | 256 KB (128K x 16) |
| Program Memory Type | FLASH |
| Number of I/O Pins | 49 |
| Connectivity | CANbus, EBI/EMI, SCI, SPI |
| Peripherals | POR, PWM, Temperature Sensor, WDT |
| Supply Voltage | 3.3 V |
| Package | 128-LQFP (14x20 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +105C |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Series | 56F8xxx |
| Instruction Set | CISC |
| Lead-Free | Yes |
MC56F8355VFGE 128-lqfp (14x20 mm) Pin Configuration Guide
Pin configuration for MC56F8355VFGE (128-lqfp (14x20 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 MC56F8355VFGE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC56F8355VFGE is suitable for 6 applications: Variable-Frequency Motor Drives (VFD), BLDC / PMSM Servo Control, Digital Power Conversion (SMPS / PFC), Industrial Automation and PLC I/O Modules, Uninterruptible Power Supplies (UPS) and Inverters, Automotive Body and Chassis Subsystems.
Variable-Frequency Motor Drives (VFD)
The MC56F8355VFGE drives AC induction and permanent-magnet motors in industrial VFDs, where its 60MHz 56800E core executes field-oriented control (FOC) loops within microsecond-scale PWM cycles. The on-chip PWM modules with complementary outputs and programmable dead-time generate the 6-step or SVPWM waveforms needed for three-phase inverter bridges. With 49 GPIO, designers can route fault inputs, encoder feedback, and CANopen communications directly to the device without external glue logic, reducing BOM cost in 1-10 kW drive cabinets.
Recommended
BLDC / PMSM Servo Control
Brushless DC and permanent-magnet synchronous motors require precise commutation timing that the MC56F8355VFGE delivers through its hardware PWM and quadrature decoder support. The 256KB Flash accommodates sensorless FOC firmware with observer-based rotor-position estimation, while the 60MHz throughput keeps the current loop well under 20 microseconds. CANbus connectivity allows multi-axis servos to synchronize over industrial CANopen DS402 networks, making the part a strong fit for robotics and CNC auxiliary axes.
Recommended
Digital Power Conversion (SMPS / PFC)
Switch-mode power supplies and power-factor-correction stages benefit from the MC56F8355VFGE's fast PWM update rate, allowing digital control loops to regulate output voltage and current at high switching frequencies. The 256KB program Flash holds state-space compensator coefficients and adaptive digital-filter tables for PFC + LLC or full-bridge topologies. Built-in SCI and SPI links simplify telemetry to system controllers, while the watchdog timer and fault inputs support functional-safety requirements in commercial power-conversion designs.
Recommended
Industrial Automation and PLC I/O Modules
Programmable logic controller slice I/O and remote terminal units (RTUs) leverage the MC56F8355VFGE's CANbus, SCI, and SPI connectivity to aggregate sensor data and forward it to host controllers. The wide operating temperature range of -40C to +105C supports installation in cabinets near motor drives without derating. With 256KB of Flash, engineers can implement IEC 61131-3 style runtime plus proprietary protocol stacks on a single chip, simplifying distributed-IO architectures in factory-automation lines.
Recommended
Uninterruptible Power Supplies (UPS) and Inverters
Online UPS systems and solar inverters rely on the MC56F8355VFGE to execute DSP-class sine-PWM generation, grid-synchronization PLLs, and MPPT algorithms in real time. The 56800E core's 16x16-bit MAC speeds up the multiply-heavy math required for dq-frame current control and THD compensation. With 256KB Flash, designers can store lookup tables for multiple battery chemistries, while on-chip PWM fault inputs cut off the inverter within microseconds on grid loss events.
Recommended
Automotive Body and Chassis Subsystems
Automotive body controllers, electric power steering, and HVAC actuators can use the MC56F8355VFGE where AEC-Q100 qualification is not strictly mandated. The CANbus peripheral provides OBD-II or CAN-FD linkage to the vehicle bus, while the 49 GPIO drive MOSFET arrays for seat, window, and mirror control. Designers must pair this DSC with an external watchdog supervisor and OVP protection to meet ISO 26262 functional-safety targets at the system level.
Recommended
Recommended Products Summary
Engineering reference data for MC56F8355VFGE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC56F8355MFGE | MC56F8357VVFE | MC56F8335VFGE | MC56F8347VVFE | MC56F8356VFVE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | LQFP-128 | LQFP-128 | LQFP-144 | LQFP-128 | LQFP-144 | LQFP-144 |
| Core | 56800E | 56800E | 56800E | 56800E | 56800E | 56800E |
| Clock Speed | 60 MHz | 60 MHz | 60 MHz | 60 MHz | 60 MHz | 60 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 64 KB | 128 KB | 280 KB |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 2.5 V |
| Connectivity | CAN, EBI/EMI, SCI, SPI | CAN, EBI/EMI, SCI, SPI | CAN, SCI, SPI | CAN, EBI/EMI, SCI, SPI | CAN, EBI/EMI, SCI, SPI | CAN, SCI, SPI |
| Peripherals | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT | POR, PWM, Temp Sensor, WDT |
Key Differentiators
- Largest Flash density in the 56F83x sub-family on a 128-LQFP footprint (vs MC56F8335VFGE)
- More I/O and connectivity than lower-tier 56F83x parts (vs MC56F8357VVFE)
- Standard 3.3V supply aligns with mainstream digital logic (vs MC56F8356VFVE)
Design Notes
The 128-LQFP package dissipates heat predominantly through its peripheral leads and a center thermal pad of copper under the die. For motor-control loops running the 56800E core at full 60MHz with all peripherals active, the junction-to-ambient thermal resistance (theta_JA) of a JEDEC 4-layer test board (EIA/JESD51) should be verified against the worst-case power dissipation. Best practice is to implement a continuous copper pour on the top layer tied to the GND pins and stitch vias to inner ground planes for optimal heat extraction.
Decouple the 3.3V supply pins with 100nF X7R ceramic capacitors placed as close as possible to each VDD pin, plus a bulk 10uF tantalum or ceramic capacitor near the package. The 56800E core draws brief, high-frequency current transients during MAC operations and PWM updates; insufficient local decoupling can cause code-fetch errors. Route the analog supply (VDDA) traces away from switching PWM outputs, and keep ADC reference traces short and guarded by analog ground.
The MC56F8355VFGE's high-speed PWM outputs and 60MHz clock edges generate strong harmonics on the order of the third and fifth odd multiples. Source-terminate the PWM lines with 33-ohm series resistors if the trace length to the gate driver exceeds 25mm, and keep PWM traces away from sensitive analog op-amp inputs. The CANbus pins require an industry-standard transceiver such as the MC33937 or TJA1050; never wire the CAN pins of the DSC directly to the bus without galvanic isolation.
A common pitfall is assuming the on-chip temperature sensor is calibrated for absolute temperature readout - it is intended for relative thermal monitoring and over-temperature interrupts. Always pair it with a periodic factory calibration if you need a system-temperature value. Another frequent mistake is leaving the JTAG/OnCE debug pins floating during production; pull TMS and TCK to defined logic levels through 10k resistors to avoid accidental entry to debug mode that resets the part. Verify Flash wait-state settings in the SIM register for the operating VDD voltage to avoid bus errors.
Compliance Information
RoHS compliant per NXP product page (MC56F8355VFGE). Part is not AEC-Q100 qualified - cross-reference MC9S12DT128MPVE or other AEC-Q100 parts from the Site MPN list for automotive safety-critical applications.