DSPIC33FJ128MC506A-I/PT - 16-bit DSC 40MIPS 128KB | Microchip
MPN: DSPIC33FJ128MC506A-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.86 | $4.86 |
| 10 | $4.41 | $44.10 |
| 100 | $3.95 | $395.00 |
| 500 | $3.58 | $1,790.00 |
| 1,000 | $3.2 | $3,200.00 |
DSPIC33FJ128MC506A-I/PT Overview
A digital signal controller is a hybrid class of semiconductor that merges the control-flow convenience of a microcontroller (MCU) with the mathematical throughput of a digital signal processor (DSP). Within Microchip's portfolio, the dsPIC33F family sits in the 16-bit microcontroller hierarchy alongside PIC24, adding DSP instructions, a high-performance PWM module, and fast ADCs targeted at real-time control loops.
Key features of this device include 40 MIPS execution (up to 40 MHz operation), 128 KB (64K x 16) of self-programmable Flash, 8-channel DMA, 11 timers, four UART/speech-grade serial I/O ports, and five external interrupt sources. Motor-control PWM outputs and advanced analog peripherals make it the classic choice for digital power conversion and motion systems.
Architecturally, the dsPIC33FJ128MC506A uses a modified Harvard, 16-bit CMOS core with a 2-stage pipeline, 40-bit wide accumulator DSP engine (17-bit multipliers, dual 40-bit accumulators), and hardware support for division and multiply-accumulate operations. X and Y data bashes allow simultaneous dual-operand fetches for MAC instructions, and the 8 DMA channels move ADC and UART data without CPU intervention.
Typical applications include brushless DC (BLDC) motor drives, single- and 3-phase induction motor control, switched reluctance motors, digital power supplies (PFC, LLC), uninterruptible power supplies, and industrial sensing nodes. The A-suffix revision integrates errata fixes over the original dsPIC33FJ128MC506.
Design consideration: the core requires a regulated 3.3V rail (3.0V-3.6V range); use a dedicated LDO and place 0.1uF decoupling at every VDD/VDDCORE pair, and always program configuration bits (FOSC, FWDT) for the intended oscillator source at flash time.
This page synthesizes distributor pricing, drop-in same-package alternatives from the XAIPART catalog, and practical design guidance beyond the raw manufacturer datasheet listing.
Drop-in alternatives for DSPIC33FJ128MC506A-I/PT — 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 DSPIC33FJ128MC506A-I/PT (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, Timers, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP310T-I/PT
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View Datasheet →DSPIC33FJ128GP706A-E/PT
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View Datasheet →DSPIC33FJ128GP206AT-I/PT
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View Datasheet →DSPIC33EV256GM106T-I/PT
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View Datasheet →DSPIC33EV128GM106T-I/PT
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View Datasheet →DSPIC33FJ128MC506A-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit |
| Operating Frequency | 40 MIPS / 40 MHz |
| Flash Program Memory | 128 KB |
| SRAM | 30 KB (8192 words x 16-bit RAM per distributor data) |
| Supply Voltage Range | 3.0 V to 3.6 V |
| DMA Channels | 8 |
| Timers | 11 |
| Serial I/O Ports | 4 |
| External Interrupt Sources | 5 |
| Operating Temperature | -40C to +85C |
| Package | TQFP-64 (10x10 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| Technology | CMOS |
| Programmability | In-circuit serial programming (ICSP) |
| RoHS Status | Compliant |
| Temperature Grade | I (Industrial) |
| Typical Applications | Motor control, digital power |
DSPIC33FJ128MC506A-I/PT tqfp-64 (10x10 mm, 0.5 mm pitch) Pin Configuration Guide
Pin configuration for DSPIC33FJ128MC506A-I/PT (tqfp-64 (10x10 mm, 0.5 mm pitch) 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 DSPIC33FJ128MC506A-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128MC506A-I/PT is suitable for 6 applications: BLDC Motor Control, Single and 3-Phase Induction Motor Drives, Digital Power Conversion (PFC, LLC, UPS), Switched Reluctance Motor Drives, Uninterruptible Power Supplies (UPS), Industrial Sensing and Control Nodes.
BLDC Motor Control
The DSPIC33FJ128MC506A-I/PT is explicitly designed by Microchip for brushless DC motor control, and its 40 MIPS DSP core executes field-oriented control or trapezoidal commutation math within one PWM period. On-chip motor-control PWM outputs drive a three-phase inverter while the fast ADC samples phase currents synchronized to PWM edges via the 8-channel DMA, eliminating CPU jitter. Typical implementations run a 20 kHz current loop and a 1 kHz speed loop on the same die. Its industrial -40C to +85C rating and 3.3V I/O make it a proven fit for appliance, pump, fan, and industrial drive inverters where deterministic real-time control is mandatory.
Recommended
Single and 3-Phase Induction Motor Drives
Microchip lists single- and 3-phase induction motor control as a primary target for the dsPIC33FJ128MC506A family. The 40 MIPS core computes V/Hz or sensorless vector-control algorithms while dedicated PWM modules generate the sine-modulated carrier for the inverter stage. On-chip ADC channels read DC-bus voltage and current sensors through the DMA channel set, keeping sampling phase-locked to the PWM carrier. The 128 KB Flash accommodates full sensorless estimation libraries with headroom for fieldbus stacks. Industrial temperature rating and a 3.0V-3.6V supply integrate cleanly into standard drive control boards powered by an isolated 3.3V bias rail.
Recommended
Digital Power Conversion (PFC, LLC, UPS)
The DSPIC33FJ128MC506A-I/PT suits digital switch-mode power conversion including power-factor-correction stages, LLC resonant converters, and uninterruptible power supplies - a use case Microchip calls out for this family. The 40 MIPS pipeline and 40-bit DSP accumulators execute compensator math for multiple nested loops at switching frequencies of 100 kHz and above, while DMA-driven ADC sampling captures voltage and current feedback deterministically each switching cycle. The 8 DMA channels offload telemetry such as UART-based PMBus or Modbus reporting. Its 30 KB SRAM supports ride-through state machines and fault logging needed in UPS and server-power designs.
Recommended
Switched Reluctance Motor Drives
Microchip explicitly lists switched reluctance (SR) motor control among the supported applications of the dsPIC33FJ128MC506A family. SR drives demand precise, per-phase current chopping with asymmetric excitation timing - tasks the device handles using its motor-control PWM channels with independent duty control and its fast ADC sampling rotor-position-derived inductance signatures. The 40 MIPS DSP core runs the commutation and torque-ripple-minimization algorithms in real time. Because SR machines tolerate harsh environments, the controller's -40C to +85C industrial rating and robust 3.3V CMOS I/O suit mining, automotive-auxiliary, and appliance applications where SR motors replace brushed or PM solutions for cost.
Recommended
Uninterruptible Power Supplies (UPS)
Uninterruptible power supplies are a documented target application for the dsPIC33FJ128MC506A family. The device coordinates inverter PWM generation, battery-charger control, and transfer-switch logic on a single 16-bit DSC: the 40 MIPS core closes the output-voltage loop while the 8 DMA channels stream current, voltage, and temperature telemetry into its 30 KB SRAM. Four serial I/O ports support monitoring interfaces (RS-232/RS-485, Modbus) simultaneously with control firmware. The 128 KB Flash retains waveform, fault, and event logs across power events, and the industrial temperature grade covers telecom-outdoor and industrial UPS cabinets without additional component derating.
Recommended
Industrial Sensing and Control Nodes
Beyond drives, the DSPIC33FJ128MC506A-I/PT serves as the main controller in industrial nodes combining analog acquisition and communication. Its 16-bit ADC front end plus 8 DMA channels continuously sample sensors while four serial ports (UART/SPI-class) link to displays, gateways, or PLC backplanes, and 5 external interrupt lines handle fast fault inputs. The 40 MIPS core leaves ample margin for protocol stacks alongside the control algorithm, and 128 KB Flash holds data logging across the -40C to +85C range. A 3.3V supply eases integration with standard industrial logic levels and isolated RS-485 transceivers.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128MC506A-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP310T-I/PT | DSPIC33FJ128GP706A-E/PT | DSPIC33FJ128GP206AT-I/PT | DSPIC33EV256GM106T-I/PT | DSPIC33EV128GM106T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | dsPIC33F, 40 MIPS | dsPIC33EV, up to 70 MIPS | dsPIC33EV, up to 70 MIPS |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 128 KB |
| Peripheral Family Focus | MC (motor control) | GP (general purpose) | GP (general purpose) | GP (general purpose) | EV (motor control + CAN-FD class) | EV (motor control) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
Key Differentiators
- Motor-control PWM and analog peripherals purpose-built for drives (vs DSPIC33FJ128GP310T-I/PT)
- Errata-corrected A-revision silicon (vs DSPIC33FJ128MC506 (non-A))
- 2x Flash upgrade without PCB change (vs DSPIC33EV256GM106T-I/PT)
Design Notes
Power the DSPIC33FJ128MC506A-I/PT from a clean 3.3V rail within the 3.0V-3.6V datasheet window. dsPIC33F devices also require the internal regulator capacitor (VCAP/VDDCORE pin) to be fitted with the datasheet-specified low-ESR capacitor to ground - omitting it is the single most common cause of brown-out resets on this family. Do not exceed 3.6V; the I/O is not 5V tolerant. Budget roughly 40-60 mA of typical core current at full 40 MIPS load (estimated from family-typical values) when sizing the 3.3V LDO.
Use a 10x10 mm TQFP-64 land pattern with 0.5 mm pitch and place a 0.1uF ceramic capacitor at every VDD pin pair, plus bulk 4.7-10uF near the device. Route PWM outputs to the gate drivers as short, matched traces and keep ADC sense traces away from PWM switching nodes; use the analog supply pins and a local ground island for sensor inputs. The exposed center area under the TQFP can host a via-stitched ground flood to reduce loop area and improve EMI on motor-drive inverters.
The A revision (DSPIC33FJ128MC506A) supersedes the original DSPIC33FJ128MC506 and corrects documented silicon errata - always order the A suffix for new designs and check the Microchip errata sheet alongside the 374-page datasheet. Configuration bits (FOSC oscillator source, FWDT watchdog, FPBOR brown-out) are programmed at flash time and are not reset by firmware, so a wrong oscillator config leaves the chip apparently dead. Also enable brown-out reset when running motor-control loops from a shared 3.3V rail.
Compliance Information
RoHS compliance indicated by distributor listings (JLCPCB, LCSC) for the -I/PT industrial TQFP-64 variant. No AEC-Q100 qualification claimed in the provided data.
