DSPIC33EP32MC504-I/MV - 16-Bit 70 MIPS DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32MC504-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.65 | $46.50 |
| 100 | $4.2 | $420.00 |
| 500 | $3.85 | $1,925.00 |
| 1,000 | $3.5 | $3,500.00 |
DSPIC33EP32MC504-I/MV Overview
A digital signal controller combines the computational strengths of a microcontroller with the DSP capabilities of a digital signal processor in a single core. Within the power management hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP: it runs deterministic C code like an MCU but adds DSP engine instructions, a barrel shifter, and hardware multiply-accumulate that accelerate control-loop mathematics. This makes the dsPIC33E family a mainstay for digital power conversion, motor field-oriented control (FOC), and embedded sensing applications.
Key features include the 70 MIPS dsPIC33E core with integrated DSP engine, a Motor Control PWM (MCPWM) peripheral for precision three-phase drive, CAN 2.0B connectivity alongside I2C, SPI, UART/USART, IrDA, LINbus, and QEI interfaces, plus 4 DMA channels that offload data movement from the CPU. The device also provides 35 general-purpose I/O pins and 5 timers.
Technical depth: the dsPIC33EP core executes most instructions in a single cycle at up to 70 MIPS, with hardware DSP multiply, divide support, and two address generation units. Peripherals include brown-out detect/reset, power-on reset, watchdog timer, and motor-control-specific PWM modules designed for complementary outputs with dead-time insertion - essential for driving half-bridges safely in inverter and BLDC/PMSM designs.
Typical applications include brushless DC and permanent-magnet synchronous motor control, digital power supplies (LLC, PFC, buck/boost), and industrial automation nodes using the CAN bus. The integrated MCPWM and QEI peripherals directly serve these use cases without external logic.
Design consideration: allocate adequate decoupling on all VDD pins and place the VCAP stabilizing capacitor exactly as specified in the family datasheet (DS70000657J); VCAP is required for core-voltage regulation and must not be omitted or undersized.
This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP32MC504-I/MV — 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 DSPIC33EP32MC504-I/MV (same form factor and footprint) — differing in Core, Operating Temperature, Package, Communication Interfaces, Packaging.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC504-E/MV
✅ Drop-In✓ In Stock
$3.35 / Unit
View Datasheet →DSPIC33EP32MC504-H/MV
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP16MC504-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC504-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC504-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24EP32MC504-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC504-I/MV Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E (16-bit DSC) |
| Maximum CPU Speed | 70 MIPS |
| Program Memory Size | 32KB (10.7K x 24) Flash |
| RAM Size | 4KB |
| Package | 48-UQFN (6x6 mm) |
| Number of I/O | 35 |
| Connectivity | CAN, I2C, SPI, UART/USART, IrDA, LINbus, QEI |
| Peripherals | Motor Control PWM, PWM, DMA, POR, Brown-out Detect/Reset, WDT |
| DMA Channels | 4 |
| Timers | 5 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| RoHS Status | Compliant |
| Packaging | Tube |
DSPIC33EP32MC504-I/MV Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low) / programming voltage input |
| Pin 2 | AN0/VREF+/CN3/RB0 — Analog input 0 / positive voltage reference / port B |
| Pin 3 | AN1/VREF-/CN2/RB1 — Analog input 1 / negative voltage reference / port B |
| Pin 4 | PGED1/AN2/RB2 — ICSP data 1 / analog input 2 |
| Pin 5 | PGEC1/AN3/RB3 — ICSP clock 1 / analog input 3 |
| Pin 6 | PGD2/AN4/RB4 — ICSP data 2 / analog input 4 |
| Pin 7 | PGC2/AN5/RB5 — ICSP clock 2 / analog input 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/RC12 — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output |
| Pin 11 | VDD — Positive supply |
| Pin 12 | SOSCI/CN1/RB6 — Secondary oscillator input / port B |
| Pin 13 | SOSCO/CN0/RB7 — Secondary oscillator output / port B |
| Pin 14 | TCK/RB8 — Test clock (JTAG) / port B |
| Pin 15 | TDI/RB9 — Test data in (JTAG) / port B |
| Pin 16 | TDO/RB10 — Test data out (JTAG) / port B |
| Pin 17 | TMS/RB11 — Test mode select (JTAG) / port B |
| Pin 18 | VSS — Ground reference |
| Pin 19 | AN11/RC13 — Analog input 11 / port C |
| Pin 20 | VCAP/VDDCORE — CPU core voltage stabilizing capacitor (external capacitor required) |
| Pin 21 | AN7/RB12 — Analog input 7 / port B |
| Pin 22 | AN8/RB13 — Analog input 8 / port B |
| Pin 23 | AN9/RB14 — Analog input 9 / port B |
| Pin 24 | AN10/RB15 — Analog input 10 / port B |
| Pin 25 | PWM1H/RE0 — Motor Control PWM output 1H / port E |
| Pin 26 | PWM1L/RE1 — Motor Control PWM output 1L / port E |
| Pin 27 | PWM2H/RE2 — Motor Control PWM output 2H / port E |
| Pin 28 | PWM2L/RE3 — Motor Control PWM output 2L / port E |
| Pin 29 | PWM3H/RE4 — Motor Control PWM output 3H / port E |
| Pin 30 | PWM3L/RE5 — Motor Control PWM output 3L / port E |
| Pin 31 | VDD — Positive supply |
| Pin 32 | VSS — Ground reference |
| Pin 33 | PWM4H/RE6 — Motor Control PWM output 4H / port E |
| Pin 34 | PWM4L/RE7 — Motor Control PWM output 4L / port E |
| Pin 35 | QEA/RA0 — QEI phase A input / port A |
| Pin 36 | QEB/RA1 — QEI phase B input / port A |
| Pin 37 | QEB/INDEX/RA2 — QEI index input / port A |
| Pin 38 | RPn/RC1 — Remappable peripheral pin / port C |
| Pin 39 | RPn/RC2 — Remappable peripheral pin / port C |
| Pin 40 | RPn/RC3 — Remappable peripheral pin / port C |
| Pin 41 | RPn/RC4 — Remappable peripheral pin / port C |
| Pin 42 | RPn/RF0 — Remappable peripheral pin / port F |
| Pin 43 | RPn/RF1 — Remappable peripheral pin / port F |
| Pin 44 | AN6/RC0 — Analog input 6 / port C |
| Pin 45 | VDD — Positive supply |
| Pin 46 | AVSS — Analog ground reference |
| Pin 47 | AVDD — Analog positive supply |
| Pin 48 | VSS — Ground reference (die pad / exposed paddle may also require VSS connection) |
Typical Applications
DSPIC33EP32MC504-I/MV is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Conversion, Industrial CAN Bus Automation Nodes, Embedded Sensor Processing, Consumer Appliance Motor Drives, Battery-Powered Portable Equipment.
BLDC/PMSM Motor Control
The DSPIC33EP32MC504-I/MV is purpose-built for brushless DC and permanent-magnet synchronous motor drives. Its 70 MIPS DSP core executes field-oriented control (FOC) loops with hardware multiply-accumulate, while the Motor Control PWM peripheral generates complementary outputs with programmable dead-time insertion - mandatory for safely driving half-bridge stages. The QEI interface reads incremental encoder feedback with no CPU overhead, and 4 DMA channels stream ADC current-sense samples directly to RAM, keeping the control loop deterministic. Placed between the gate-driver inputs and the current-sense ADC, the DSC closes current, speed, and position loops at kHz rates. The 48-UQFN 6x6 mm footprint saves board area in compact drives such as e-bikes, servo modules, and HVAC blowers.
Recommended
Digital Power Conversion
In digital power supplies - LLC resonant converters, PFC stages, and synchronous buck regulators - the DSPIC33EP32MC504-I/MV replaces analog control ICs with a programmable 70 MIPS core. The high-speed PWM module supports complementary operation with dead-time and phase-shift control, enabling soft-switching topologies, while the on-chip ADC samples output voltage and current each switching cycle for closed-loop regulation. DSP instructions accelerate compensator math (PI/3p3z) without floating-point hardware. The 48-pin UQFN package allows the controller to sit close to the power stage, minimizing gate-drive trace inductance. Firmware-based control also enables adaptive features such as burst mode and soft-start profiles that are fixed in analog controllers, improving light-load efficiency and transient behavior.
Recommended
Industrial CAN Bus Automation Nodes
The integrated CAN 2.0B controller makes the DSPIC33EP32MC504-I/MV a strong fit for industrial automation nodes: sensor aggregators, actuator controllers, and gateway endpoints on CANopen or DeviceNet-style networks. Beyond CAN, the device offers I2C, SPI, UART/USART, IrDA, and LINbus connectivity, letting one DSC bridge a motor, a sensor cluster, and the factory bus simultaneously. The 70 MIPS core provides headroom for protocol stacks plus application logic, and 4 DMA channels offload serial transfers to reduce interrupt jitter. Operating from -40C to +85C, the industrial I-grade covers typical factory-floor ambient conditions. The 6x6 mm UQFN suits compact distributed-I/O modules mounted directly on machinery rather than in remote cabinets.
Recommended
Embedded Sensor Processing
For sensor signal chains, the DSPIC33EP32MC504-I/MV provides local processing that reduces raw-data traffic to a host. The 70 MIPS DSP engine applies FIR/IIR filtering, RMS computation, or FFT-based feature extraction on-chip, transmitting only processed results over UART, SPI, or CAN. DMA channels move ADC conversion results to RAM without CPU intervention, and 35 I/O pins handle peripheral timing, status LEDs, and handshake logic. The 4KB RAM accommodates moderate sample buffers, while the 32KB Flash stores both application and calibration tables. Typical deployments include vibration-monitoring nodes, load-cell conditioning, and flow-meter interfaces where deterministic low-latency processing at the point of sensing improves system responsiveness and reliability.
Recommended
Consumer Appliance Motor Drives
Appliances such as fans, pumps, compressors, and mixers increasingly use sensorless BLDC drives, and the DSPIC33EP32MC504-I/MV fits this cost-sensitive segment. The Motor Control PWM delivers the six-step or FOC drive waveforms, back-EMF sensing through the on-chip ADC eliminates Hall sensors, and the 70 MIPS core runs sensorless observers with margin. The compact 48-UQFN (6x6 mm) package reduces PCB area inside motor housing-adjacent driver boards, and industrial -40C to +85C rating covers unventilated appliance enclosures. Firmware-based commutation also lets one hardware platform serve multiple appliance models via software, cutting BOM proliferation. Designers should budget Flash carefully, as sensorless algorithms plus safety supervision code approach the 32KB limit.
Recommended
Battery-Powered Portable Equipment
Portable and battery-operated equipment benefits from the DSPIC33EP32MC504-I/MV's balance of performance and integration. The 3V-class dsPIC33EP core supports low-power idle and doze modes for duty-cycled operation, while 70 MIPS burst capability handles demanding tasks - motor commutation, wireless protocol stacks, or signal analysis - then returns to sleep. Integrated peripherals (SPI, UART, CAN, PWM) remove external controller chips, shrinking BOM count and quiescent budget in handheld instruments, portable testers, and cordless tools. The 6x6 mm UQFN package suits two-layer compact layouts. Engineers should verify the exact supply-voltage range and sleep-mode currents in datasheet DS70000657J against their battery chemistry and duty-cycle assumptions before finalizing power budgeting.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC504-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC504-E/MV | DSPIC33EP32MC504-H/MV | DSPIC33EP16MC504-I/MV | DSPIC33EP64MC504-I/MV |
|---|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN/PQCC48 - same footprint | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS family core | 70 MIPS | 70 MIPS |
| Program Memory | 32KB (10.7K x 24) Flash | 32KB Flash | 32KB Flash | 16KB Flash | 64KB Flash |
| Operating Temperature | -40C to +85C (I) | -40C to +125C (E) | H-grade (verify with Microchip) | -40C to +85C (I) | -40C to +85C (I) |
| Motor Control PWM | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) |
| CAN Connectivity | Yes (CAN 2.0B) | Yes | Yes | Yes | Yes |
Key Differentiators
- Motor Control PWM with complementary outputs and dead-time (vs DSPIC33EP32GP504)
- Extended-temperature drop-in available at identical footprint (vs DSPIC33EP32MC504-I/MV vs DSPIC33EP32MC504-E/MV)
- Flash scalability without PCB respin (vs DSPIC33EP16MC504-I/MV and DSPIC33EP64MC504-I/MV)
Design Notes
The DSPIC33EP32MC504 requires an external stabilizing capacitor on the VCAP/VDDCORE pin to regulate the internal core voltage. Per family datasheet DS70000657J, use the exact capacitance and ESR specified (a low-ESR ceramic; do not substitute). Omitting or undersizing VCAP is the most common cause of erratic resets and brown-out misbehavior. Connect ALL VDD and VSS pins - on the 48-UQFN, multiple power/ground pairs exist and floating any pair violates the datasheet. Place a 100 nF ceramic decoupling capacitor at every VDD pin plus bulk 4.7-10 uF near the supply entry.
On the 48-UQFN 6x6 mm package, the exposed die pad on the bottom must be soldered to a grounded PCB paddle with an array of thermal vias - this pad carries significant ground current and provides the primary heat path. Estimated: a solid paddle with 9 vias keeps thermal impedance near the package minimum, whereas an unsoldered pad raises junction temperature substantially under 70 MIPS operation. Keep the high-current Motor Control PWM traces (PWM1H/L through PWM4H/L) short and symmetric to the gate drivers, and separate the analog ground (AVSS) return from power-switching ground paths to protect ADC accuracy.
The dsPIC33EP32MC504 offers multiple PGECx/PGEDx ICSP pairs, and per Microchip programming documentation you must use any pair as a matched set (PGEC1 with PGED1, PGEC2 with PGED2, etc.) - mixing clocks and data from different pairs breaks ICSP. Also, PPS (peripheral pin select) remapping for UART/SPI/UART functions must be configured before enabling the module; an unconfigured RPn pin silently leaves the peripheral disconnected. Finally, verify ADC analog pin configuration: shared ANx pins default to digital mode, so set ANSEL-equivalent registers before using them as analog inputs.
Compliance Information
RoHS compliance and lead-free status per Microchip standard product data; REACH and conflict-minerals declarations not confirmed in the retrieved data.
