DSPIC33FJ32MC104-E/ML - 16-Bit 16 MIPS Motor Control DSC | Microchip
MPN: DSPIC33FJ32MC104-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.8 | $5.80 |
| 10 | $5.2 | $52.00 |
| 100 | $4.65 | $465.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.72 | $3,720.00 |
DSPIC33FJ32MC104-E/ML Overview
A Digital Signal Controller combines the computational throughput of a DSP core with the peripherals, interrupt structure, and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33F motor control family sits between general-purpose MCUs and dedicated DSPs, making it a common single-chip choice for field-oriented control (FOC) of motors.
Key features include the Motor Control PWM (MCPWM) module with complementary outputs and dead-time insertion, the Charge Time Measurement Unit (CTMU) for capacitive touch and precise timing, three analog comparators, a 10-bit ADC, a Real-Time Clock and Calendar (RTCC), and Peripheral Pin Select (PPS) for flexible digital I/O remapping.
The dsPIC33F core is a modified Harvard architecture with a 16-bit data path, DSP multiply-accumulate (MAC) instructions, and hardware division support, allowing single-cycle multiply operations used extensively in Clarke/Park transforms and PI control loops executed in FOC firmware. The -E extended temperature grade and AEC-Q100 automotive qualification make it suitable for under-hood and industrial-ambient environments.
Typical applications include brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) drives, sensorless FOC for pumps and fans, power factor correction, and digitally controlled inverters. The low pin count and small footprint also suit compact appliance and power-tool boards.
Designers should note the 3.0V to 3.6V supply requirement and plan the 3.3V rail accordingly; the exposed pad on the QFN must be soldered to ground for thermal and electrical performance.
This page synthesizes distributor data, same-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32MC104-E/ML — 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 DSPIC33FJ32MC104-E/ML (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, SRAM, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC104-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.85 / Unit
View Datasheet →DSPIC33FJ32MC202-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.37 / Unit
View Datasheet →DSPIC33FJ32MC102T-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →DSPIC33FJ32GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.49 / Unit
View Datasheet →DSPIC33FJ16GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33FJ32MC104-E/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Max CPU Speed | 16 MIPS |
| Flash Memory | 32 KB (11K x 24) |
| RAM | 2 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 44-QFN (8x8 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Motor Control PWM | MCPWM with dead-time and complementary outputs |
| Charge Time Measurement Unit | CTMU (capacitive touch / precise timing) |
| Comparators | 3 |
| Real-Time Clock and Calendar | RTCC |
| Peripheral Pin Select | PPS supported |
| Qualification | AEC-Q100, Automotive |
| Programming/Debug Pair | PGEC3-PGED3 (ICSP) |
| Series | dsPIC 33F Motor Control family |
DSPIC33FJ32MC104-E/ML 44-qfn (8x8 mm) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ32MC104-E/ML (44-qfn (8x8 mm) with exposed pad 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 DSPIC33FJ32MC104-E/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32MC104-E/ML is suitable for 6 applications: Sensorless BLDC Motor Drive, PMSM Field-Oriented Control (FOC), Automotive Pump and Fan Control, Power Factor Correction (PFC), Capacitive Touch Control Panels, Digital Inverter and Appliance Drives.
Sensorless BLDC Motor Drive
The DSPIC33FJ32MC104-E/ML fits sensorless brushless DC drives because its MCPWM module generates three complementary PWM pairs with hardware dead-time insertion, and its 10-bit ADC samples back-EMF zero-crossings or shunt currents synchronized to the PWM cycle. The three analog comparators provide fast over-current trip zones independent of software latency, protecting the inverter stage during faults. Running at 16 MIPS with single-cycle MAC instructions, the core executes the commutation state machine and current-loop PI control with ample margin. The CTMU can also monitor winding capacitance for diagnostics. At 3.3V logic levels interfacing to gate drivers such as the MIC4104, a complete compact drive can be built on a single 8x8 mm QFN footprint, reducing board area in fans, pumps, and power tools.
Recommended
PMSM Field-Oriented Control (FOC)
For permanent magnet synchronous motor FOC, the DSPIC33FJ32MC104-E/ML provides the computational core and peripheral timing: Clarke and Park transforms rely on single-cycle multiply-accumulate DSP instructions available on the dsPIC33F core at 16 MIPS, while the MCPWM center-aligned outputs minimize current ripple and simplify ADC trigger synchronization. The -E extended temperature grade (-40C to +125C) suits sealed motor housings where ambient temperatures exceed industrial limits. With 32 KB Flash, a complete FOC stack including position observer and PI current/speed loops fits with headroom for field-upgradable firmware. Hardware comparators implement cycle-by-cycle current limiting. Reference designs based on the MA330032 Motor Control Plug-in Module demonstrate this exact device in PMSM FOC evaluation, shortening firmware development time.
Recommended
Automotive Pump and Fan Control
The AEC-Q100 qualification and -40C to +125C operating range of the DSPIC33FJ32MC104-E/ML make it appropriate for automotive auxiliary drives such as coolant pumps, radiator fans, and turbocharger actuators. The RTCC supports time-based duty scheduling, the CTMU enables capacitive-touch user interfaces for control panels, and Peripheral Pin Select lets one PCB serve multiple model variants by remapping PWM, UART, and LIN-related digital functions in firmware. The 3.0V to 3.6V supply range is compatible with automotive 5V rails via a low-cost LDO. The 44-QFN (8x8 mm) exposed-pad package handles elevated ambient temperatures with a modest ground-plane heatsink, and the PGEC3-PGED3 pair supports in-circuit reprogramming during end-of-line calibration on the production line.
Recommended
Power Factor Correction (PFC)
In digitally controlled PFC stages, the DSPIC33FJ32MC104-E/ML closes the current loop at switching frequencies of tens of kilohertz using the MCPWM module and ADC triggers synchronized to the PWM period. Its 16 MIPS core and single-cycle MAC handle average-current-mode control with input-voltage feedforward, while the three comparators offer hardware over-current protection that responds within nanoseconds, well ahead of any software fault path. The 10-bit ADC resolution is sufficient for boost-inductor current shaping, and the RTCC can log operating hours for service scheduling. Because the -E grade tolerates +125C ambient, the controller can sit near hot power components inside LED drivers, telecom rectifiers, and appliance power supplies without additional cooling provisions or derating the junction budget.
Recommended
Capacitive Touch Control Panels
The CTMU (Charge Time Measurement Unit) on the DSPIC33FJ32MC104-E/ML implements capacitive touch sensing without a dedicated touch IC: it charges sensor pads with a controlled constant current and measures charge time to detect finger proximity. With the 44 available pins and Peripheral Pin Select, dozens of touch keys, sliders, and wheels can coexist with motor-control PWM outputs on a single device - useful for appliances where a touch panel and a fan or pump motor share one controller. The -E temperature grade supports cooktop and oven-adjacent environments up to +125C. Microchip's CTMU application notes provide calibration algorithms for drift compensation against temperature and humidity, and the RTCC adds time-of-day display functionality without external RTC chips, further reducing bill-of-materials cost.
Recommended
Digital Inverter and Appliance Drives
Home-appliance inverters for refrigerators, washing machines, and air conditioners combine PMSM compressors, BLDC fans, and housekeeping logic - all of which the DSPIC33FJ32MC104-E/ML can supervise from one chip. The MCPWM module drives the compressor inverter stage with complementary outputs and dead-time; additional PWM channels and remappable pins via PPS manage the fan and relay outputs. The 10-bit ADC monitors DC-bus voltage, phase currents, and heatsink temperature, while comparators enforce hardware fault trips. Operating from a 3.3V rail across -40C to +125C, the device tolerates appliance enclosure environments. The 44-QFN (8x8 mm) package with exposed pad keeps the controller footprint small on dense power boards, and its 32 KB Flash stores parameter tables plus bootloader for field firmware updates.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC104-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC104-I/ML | DSPIC33FJ32MC202-I/ML | DSPIC33FJ32MC102T-I/ML | DSPIC33FJ32GP304-I/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| Flash Memory | 32 KB (11K x 24) | 32 KB | 32 KB | 16 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB | 2 KB |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Motor Control PWM (MCPWM) | Yes (MCPWM with dead-time) | Yes (same module) | Yes (reduced channel configuration) | Yes (MC family MCPWM) | No (GP family) |
Key Differentiators
- Extended -40C to +125C automotive grade in 44-QFN (vs DSPIC33FJ32MC104-I/ML)
- Full MCPWM motor-control peripheral set (vs DSPIC33FJ32GP304-I/ML)
- 32 KB Flash plus RTCC for field-upgradable firmware (vs DSPIC33FJ32MC102T-I/ML)
Design Notes
The DSPIC33FJ32MC104-E/ML requires a 3.0V to 3.6V supply. Place a 0.1uF ceramic decoupling capacitor at each VDD/VSS pin pair plus one bulk 10uF capacitor per device, as close to the pins as possible per the dsPIC33F family datasheet power guidelines. If the 3.3V rail derives from an automotive 12V or 5V bus through a switching regulator, add an RC or ferrite filter ahead of the MCU supply to keep high-frequency ripple out of the ADC reference, which directly affects back-EMF and shunt-current measurement accuracy.
The 44-QFN exposed pad is the primary ground connection and must be soldered to a solid ground plane - do not leave it unconnected even on prototype boards, as VSS integrity affects ADC noise and EMC performance. Use a 3x3 or 4x4 via array under the pad for thermal relief and low-inductance grounding. Keep the PGEC3-PGED3 programming pair routed to a standard ICSP header for in-circuit debugging, matching Microchip's MA330032 Motor Control Plug-in Module test-point arrangement for easy retrofit.
Because Peripheral Pin Select (PPS) remaps digital functions in software, a mismatch between configuration code and PCB routing is a frequent bring-up failure. Verify that the PWM output pins chosen in firmware correspond to the physical pins connected to the gate drivers before powering the inverter stage, and enable hardware fault inputs on the comparators before first spin. Also note the -E grade is needed only above +85C ambient; using the extended-grade part in cooler environments is functionally identical but carries a price premium.
Compliance Information
DigiKey classifies the part as dsPIC Automotive, AEC-Q100. RoHS/lead-free status implied by standard Microchip compliant packaging; REACH and conflict-minerals declarations not stated in provided data.
