DSPIC33EP32MC502-H/SS - 16-bit DSC 60MIPS Motor Control | Microchip
MPN: DSPIC33EP32MC502-H/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.85 | $38.50 |
| 100 | $3.4 | $340.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.75 | $2,750.00 |
DSPIC33EP32MC502-H/SS Overview
A digital signal controller combines the computational architecture of a microcontroller with the numeric throughput of a DSP engine. In the power-management hierarchy, the dsPIC33EP family sits between general-purpose 16-bit microcontrollers and dedicated motor-control ASICs, integrating a 16-bit modified Harvard core with a DSP multiply-accumulate (MAC) unit, single-cycle multiply, and enhanced on-chip peripherals in a single chip.
Key features of the DSPIC33EP32MC502-H/SS include high-speed PWM modules with dead-time insertion designed for motor control, a 16-bit core running at up to 60 MIPS in the extended-temperature variant, 32KB self-programmable flash with ECC, and advanced analog peripherals including a high-speed 12-bit ADC and comparators suited to current sensing in power-conversion loops. The DSP engine supports DSP instruction classes that accelerate FOC (field-oriented control) and Clarke/Park transform math used in brushless DC (BLDC), permanent-magnet synchronous motor (PMSM), and sensorless control schemes.
Architecturally, the device uses a modified Harvard bus structure with separate program and data paths, hardware loop support, and dual operand fetch, enabling deterministic single-cycle MAC execution that is difficult to achieve on generic MCU cores. On-chip peripherals such as the motor-control PWM with complementary outputs and programmable dead time reduce external component count in inverter stages.
Typical applications include BLDC and PMSM motor drives for industrial automation, digital power supplies (PFC, LLC control), UPS and solar inverter power stages, and automotive auxiliary motor control where the -40C to +125C range is required.
For design, note that the extended-temperature -H variant is rated at 60 MIPS, lower than the 70 MIPS of the industrial -I variant, so timing budgets for control loops must be validated at 60 MIPS. Flash ECC and self-programming simplify firmware updates in the field.
This page synthesizes distributor data, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP32MC502-H/SS — 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 DSPIC33EP32MC502-H/SS (same form factor and footprint) — differing in Package, Program Memory (Flash), RAM, Core Architecture, Operating Temperature.
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DSPIC33EP32MC502-I/SS
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View Datasheet →DSPIC33EP64MC502-H/SS
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DSPIC33EP16MC502-H/SS
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DSPIC33EP32MC202-H/SS
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View Datasheet →DSPIC33EP16MC202-H/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC502-H/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC core with DSP engine |
| CPU Speed | 60 MIPS (extended temperature variant) |
| Program Memory (Flash) | 32 KB |
| RAM | 4 KB |
| Package | 28-SSOP (0.209 inch / 5.30 mm width) |
| Pin Count | 28 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (H suffix) |
| Peripherals | High-speed PWM, 12-bit ADC, comparators, op amps (family features) |
| Family | dsPIC33EP32MC502 (16-bit DSC with high-speed PWM and advanced analog) |
| Typical Applications | Precision motor control, digital power conversion |
| Device Type | Digital Signal Processor & Controller (DSC) |
DSPIC33EP32MC502-H/SS 28-ssop (0.209 inch / 5.30 mm width) Pin Configuration Guide
Pin configuration for DSPIC33EP32MC502-H/SS (28-ssop (0.209 inch / 5.30 mm width) 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 DSPIC33EP32MC502-H/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC502-H/SS is suitable for 6 applications: BLDC Motor Control, Digital Power Supplies (PFC / LLC), Solar Inverter and UPS Control, Industrial Automation Drives, Automotive Auxiliary Motor Systems, Sensor Signal Conditioning and DSP Processing.
BLDC Motor Control
The DSPIC33EP32MC502-H/SS fits brushless DC motor control because its 60 MIPS dsPIC core executes field-oriented control (FOC) loops with single-cycle MAC instructions, while the high-speed PWM module provides complementary outputs with programmable dead time for the three-phase inverter. The on-chip fast analog comparator and ADC channels support low-latency phase-current sampling needed for sensorless and sensored commutation. Typical implementation: PWM frequencies of 16-20 kHz drive the inverter, with the current loop closing at roughly 1-2 kHz within the 60 MIPS budget. Unlike a generic MCU plus external gate driver logic, the integrated motor-control PWM reduces BOM count. The extended -40C to +125C rating suits drives mounted near power stages where ambient heat raises PCB temperature well above room conditions.
Recommended
Digital Power Supplies (PFC / LLC)
For digital power conversion, the DSPIC33EP32MC502-H/SS provides the deterministic control timing digital PFC and LLC topologies require. The high-speed PWM supports frequency modulation, phase shift, and complementary drive with dead-time control, enabling direct control of half-bridge and full-bridge stages at 100-500 kHz switching frequencies. The fast 12-bit ADC captures output voltage and input current feedback with trigger synchronization to PWM events, minimizing control-loop latency. The DSP engine handles the multiply-heavy compensation math (PI/PID plus nonlinear limiting) at 60 MIPS with predictable cycle counts, which a generic 16-bit MCU cannot guarantee. Software-based control also allows adaptive burst mode and fault response in firmware. The -H grade tolerates controller proximity to hot power stages in compact supply enclosures.
Recommended
Solar Inverter and UPS Control
In solar micro-inverters and UPS systems, the DSPIC33EP32MC502-H/SS acts as the single-controller supervisory and control unit. Its 60 MIPS core runs maximum-power-point-tracking (MPPT) algorithms alongside grid-synchronized inverter control, while the high-speed PWM generates the push-pull or full-bridge drive signals for the DC-DC stage and the low-frequency modulation for the DC-AC stage. On-chip comparators provide hardware overcurrent trip functions that shut down PWM outputs within one PWM cycle, a safety behavior not reliably achieved purely in software. The 32KB flash accommodates MPPT, grid synchronization, and protection firmware typical for this class. The extended -40C to +125C temperature range supports outdoor enclosures experiencing wide seasonal temperature swings without active cooling.
Recommended
Industrial Automation Drives
Industrial conveyors, pumps, and fans benefit from the DSPIC33EP32MC502-H/SS as an embedded drive controller. The dsPIC DSC core at 60 MIPS closes velocity and current loops deterministically while simultaneously handling communication tasks on UART/SPI/I2C peripherals for factory network integration. The high-speed PWM drives IGBT or MOSFET inverter stages with hardware dead-time insertion, protecting against shoot-through independent of CPU load. On-chip flash ECC and self-programming allow field firmware updates during maintenance windows, an important lifecycle feature in long-deployment industrial equipment. The 28-SSOP surface-mount footprint keeps controller PCB area compact inside drive housings, and the -H grade covers control boards mounted near heatsinks where ambient temperatures approach 100C or higher.
Recommended
Automotive Auxiliary Motor Systems
The -40C to +125C rating of the DSPIC33EP32MC502-H/SS makes it appropriate for under-hood and near-engine auxiliary motor applications such as cooling fans, fuel pumps, throttle actuators, and HVAC blowers in non-safety-critical automotive subsystems. The 60 MIPS core and DSP engine run sensorless FOC or block-commutation firmware robust to battery voltage ripple, while the ADC and comparators implement phase-current protection in hardware. The high-speed PWM tolerates the noisy electrical environment with programmable dead time and fault inputs for immediate shutdown. Note that general-purpose automotive designs should verify qualification requirements; for AEC-Q100-mandated programs, confirm the specific qualification status of this ordering code with Microchip before design-in, since standard parts do not automatically carry automotive certification.
Recommended
Sensor Signal Conditioning and DSP Processing
The DSP engine of the DSPIC33EP32MC502-H/SS also serves embedded signal-processing applications: FIR/IIR filtering of sensor data, RMS metering, and harmonic analysis. The single-cycle MAC and dual operand fetch accelerate convolution loops, and 4KB of RAM buffers several hundred 16-bit samples for block-based processing. The on-chip 12-bit ADC with multiple channels digitizes analog sensor front ends directly, and the MC50x advanced analog features reduce external op-amp count for gain staging. At 60 MIPS, sample rates in the tens of kilohertz with filter banks of 50-100 taps are practical. This makes the part a fit for energy metering, vibration monitoring nodes, and smart sensors where a standalone DSP chip would otherwise be added to an MCU-based BOM.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC502-H/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC502-I/SS | DSPIC33EP64MC502-H/SS | DSPIC33EP16MC502-H/SS | DSPIC33EP32MC202-H/SS | DSPIC33EP16MC202-H/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 60 MIPS | 70 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 32 KB | 32 KB | 64 KB | 16 KB | 32 KB | 16 KB |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Analog Feature Set | MC50x enhanced analog (op amps/comparators per family) | MC50x enhanced analog - same | MC50x enhanced analog - same | MC50x enhanced analog - same | MC20x reduced analog | MC20x reduced analog |
| Core Type | 16-bit dsPIC DSC with DSP engine | 16-bit dsPIC DSC - same | 16-bit dsPIC DSC - same | 16-bit dsPIC DSC - same | 16-bit dsPIC DSC - same | 16-bit dsPIC DSC - same |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 |
Key Differentiators
- Extended temperature range for hot environments (vs DSPIC33EP32MC502-I/SS)
- Double the program memory in the same footprint (vs DSPIC33EP16MC502-H/SS)
- Enhanced MC50x analog feature set (vs DSPIC33EP32MC202-H/SS)
- Balanced memory/performance mid-point (vs DSPIC33EP64MC502-H/SS)
Design Notes
The -H variant is rated at 60 MIPS versus 70 MIPS for the industrial -I grade; this is the single most common migration pitfall. If firmware was developed on a -I part with a 70 MIPS clock plan (e.g., a 7.3728 MHz crystal x 16 PLL setting), porting to the -H part requires recalculating the PLL configuration so the core does not exceed its 60 MIPS limit. Verify control-loop execution headroom: a loop consuming 60% of 70 MIPS becomes roughly 70% of 60 MIPS, leaving less margin for ISRs. Estimated: budget at least 20% idle cycles at 60 MIPS before committing the -H part.
Decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of each VDD pin, plus a 4.7-10 uF bulk capacitor near the controller. In motor-drive layouts, keep the controller ground reference star-connected to power ground at a single point to prevent inverter switching currents from injecting noise into the ADC reference. Route PWM outputs away from analog sense lines; the high di/dt of the inverter stage can couple into ADC inputs and corrupt current-sensing samples. Per Microchip layout guidance for dsPIC33E motor-control designs, dedicate a solid ground plane on layer 2 under the controller.
Ordering-code confusion is a frequent procurement error: /SS is 28-SSOP, /SO is 28-SOIC, and /SP is 28-SPDIP - these packages are NOT footprint-compatible despite identical silicon. Always confirm the full MPN suffix against your PCB land pattern. Additionally, the 28-pin package multiplexes many peripheral functions (PGD/PGC programming pins shared with analog inputs); assign ICSP programming pins early in the design so in-circuit debugging does not conflict with motor-control PWM outputs or sensor inputs. Verify MCLR pull-up (4.7-10 kohm) is fitted for reliable programming.
Estimated: for a controller dissipating roughly 100-150 mA at 3.3V (about 0.4-0.5 W typical under full clock load with peripherals active), the 28-SSOP theta-JA of approximately 100-120 C/W (verify exact value in the datasheet DC characteristics) yields a junction rise of roughly 50-60 C above ambient. At +125C ambient this approaches the junction limit, so validate actual supply current in your application at 60 MIPS and consider airflow or copper-pour area if the board operates near the top of the -H range.
Compliance Information
Compliance data was not present in the provided verified web data. Confirm RoHS/REACH status on the official Microchip product page or MicrochipDirect environmental reports before production orders.
