DSPIC33FJ32MC202-I/SS - 16-bit DSC, 40 MIPs, 32KB Flash | Microchip
MPN: DSPIC33FJ32MC202-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.92 | $49.20 |
| 25 | $4.62 | $115.50 |
| 100 | $4.18 | $418.00 |
| 1,000 | $3.75 | $3,750.00 |
DSPIC33FJ32MC202-I/SS Overview
A Digital Signal Controller combines the computational architecture of a Digital Signal Processor (DSP) with the peripheral integration and control-oriented instruction set of a microcontroller. The dsPIC33F family sits within Microchip's 16-bit MCU/DSC hierarchy (PIC24H -> dsPIC33F), using a modified Harvard architecture with an enhanced instruction set that includes DSP multiply-accumulate and modulo addressing support.
Key features of this Motor Control family device include two high-speed PWM generators with independent timebases, a Peripheral Pin Select (PPS) capability that maps digital peripherals to assignable pin locations for flexible PCB routing, high-speed comparators with direct connection to PWM fault inputs for fast cycle-by-cycle current limiting, and a 10-bit ADC. Seamless migration paths exist to and from PIC24F, PIC24H, and dsPIC30F devices.
Technically, the core runs on 3.0V to 3.6V supply, executing up to 40 MIPS at 40 MHz, with DSP engine features such as dual 40-bit accumulators for filter and control-loop math. Flash is software-programmable in-circuit via ICSP through the PGEC/PGED clock-data pairs.
Typical applications include brushless DC (BLDC), permanent magnet synchronous and AC induction motor control, digital power supplies and PFC stages, and general closed-loop embedded control where deterministic PWM timing matters.
Design consideration: all VDD and VSS pins must be connected and the internal core regulator decoupled at the VCAP pin; omitting these connections is the most common programming-failure cause. PPS mapping must be written at initialization before peripherals are used.
This page synthesizes distributor availability, same-package drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32MC202-I/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 DSPIC33FJ32MC202-I/SS (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, RoHS Status, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64MC202-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12MC202-I/SS
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →DSPIC33FJ12MC201-I/SS
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →DSPIC33FJ64MC201-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC202-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit modified Harvard (dsPIC33F DSC) |
| Max CPU Speed | 40 MIPs (40 MHz) |
| Program Memory | 32KB (32K x 8) Flash, self-programming |
| Supply Voltage | 3.0 V to 3.6 V |
| Package | 28-SSOP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| ROM Type | Flash |
| PWM Generators | 2 high-speed PWMs with independent timebases |
| Peripheral Pin Select (PPS) | Yes |
| Comparators | High-speed comparators with PWM fault input connection |
| Programming Interface | ICSP via PGEC/PGED pairs (PGEC3/PGED3 not usable on this device) |
| Lifecycle Stage | Active |
| Lead Finish | Lead free (plastic SSOP) |
| Family Migration | Seamless to/from PIC24F, PIC24H, dsPIC30F |
DSPIC33FJ32MC202-I/SS 28-ssop Pin Configuration Guide
Pin configuration for DSPIC33FJ32MC202-I/SS (28-ssop 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 DSPIC33FJ32MC202-I/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32MC202-I/SS is suitable for 6 applications: BLDC Motor Control, Digital Power Supplies and PFC, AC Induction Motor Drives, Embedded Sensing and Instrumentation, Industrial Automation and Robotics, LED Drivers and Lighting Control.
BLDC Motor Control
The DSPIC33FJ32MC202-I/SS is purpose-built for brushless DC (BLDC) motor drives. Its two high-speed PWM generators with independent timebases produce complementary six-step or field-oriented control waveforms with hardware dead-time control, while the high-speed comparators connect directly to PWM fault inputs for cycle-by-cycle overcurrent shutdown without software latency. Running at 40 MIPs, the core executes commutation and PI current loops within a single 20 kHz PWM period using hardware DSP multiply-accumulate instructions. Peripheral Pin Select lets designers route PWM, input-capture (for hall sensor or BEMF feedback), and UART signals to optimal physical pins, simplifying PCB layout around the power stage. The 32KB Flash comfortably holds sensorless FOC firmware; typical designs consume 16-24KB, leaving margin for bootloader and diagnostics.
Recommended
Digital Power Supplies and PFC
Switch-mode power supplies, PFC stages, and LLC converters benefit from this DSC's deterministic PWM timing. The 40 MIPs core closes voltage- and current-loop compensators digitally at switching frequencies up to 100-200 kHz using the dual high-speed PWM timebases, and the fast comparators provide hardware overcurrent protection by gating PWM outputs directly - a critical safety path when the firmware loop is too slow. The 10-bit ADC samples feedback signals synchronously with the PWM period, and Peripheral Pin Select permits flexible ADC-trigger and PWM-output mapping. Because the part operates from a 3.0-3.6V supply, feedback signals must be conditioned to the ADC range. Compared with analog controllers, the digital approach enables adaptive gain scheduling, soft-start sequencing, and telemetry via UART.
Recommended
AC Induction Motor Drives
For variable-frequency drives (VFDs) controlling AC induction motors, the DSPIC33FJ32MC202-I/SS supplies three-phase PWM generation, DC-bus voltage and phase-current sensing via its ADC, and DSP math for slip compensation and space-vector modulation. The two independent PWM timebases allow simultaneous control of main inverter and auxiliary circuits such as brake choppers or PFC pre-regulators. Hardware comparators protect the IGBT/MOSFET stage by asserting PWM fault inputs within nanoseconds of an overcurrent event. With 32KB Flash, sensorless V/f and even reduced-order flux-observer algorithms fit on-chip. The industrial -40C to +85C temperature rating and 3.0-3.6V core supply suit factory-floor inverter boards; isolate and level-shift gate-driver interfaces accordingly.
Recommended
Embedded Sensing and Instrumentation
General data-acquisition and portable instrumentation designs use the DSPIC33FJ32MC202-I/SS where a mix of control timing and signal processing is needed. The 16-bit core with hardware DSP multiply-accumulate accelerates digital filtering (IIR/FIR) of sensor data, while Peripheral Pin Select allows the designer to assign UART, SPI, and input-capture functions to convenient physical pins - valuable in dense mixed-signal boards. Self-programming Flash enables in-field firmware updates without a separate bootloader chip, and ICSP programming via PGEC/PGED supports production flashing. Low-pin-count 28-SSOP packaging minimizes board area. Designers should buffer analog inputs against switching noise from the PWM peripherals, and remember that PGEC3/PGED3 is not usable as a programming pair on this specific device.
Recommended
Industrial Automation and Robotics
Actuator control, servo sub-systems, and factory automation nodes deploy the DSPIC33FJ32MC202-I/SS as a real-time motor and motion controller. Quadrature Encoder Interface inputs (QEA/QEB) and input captures handle position feedback from incremental encoders, while the 40 MIPs core runs cascaded position/velocity/current loops at kHz rates using DSP instructions. Dual independent PWM timebases drive both the power stage and auxiliary functions such as brake or holding coils. The industrial temperature range (-40C to +85C) and 3.0-3.6V supply integrate into standard 3.3V logic backplanes, and UART/SPI via Peripheral Pin Select connect to higher-level PLC or CAN gateways. Deterministic interrupt latency supports time-critical limit-switch and fault handling required in machinery safety chains.
Recommended
LED Drivers and Lighting Control
High-power LED luminaires and tunable lighting benefit from the DSC's dual high-speed PWMs: one timebase drives the DC-DC converter stage (buck/boost current regulation) while a second generates dimming PWM independent of the converter loop. Fast comparators tied to PWM fault inputs provide cycle-by-cycle overcurrent protection for the LED string. The 40 MIPs core implements average-current-mode control, temperature derating via an NTC on the ADC, and communication (DMX-style or UART) using PPS-mapped peripherals. Compared with dedicated analog LED drivers, the dsPIC approach supports color-mixing algorithms, scheduled dimming curves, and digital diagnostics in one 28-SSOP chip. Designers should separate analog ground for ADC accuracy and keep the switching node away from PPS-mapped feedback traces.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC202-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64MC202-I/SS | DSPIC33FJ12MC202-I/SS | DSPIC33FJ12MC201-I/SS |
|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPs | 40 MIPs | 40 MIPs | 40 MIPs |
| Flash Memory | 32KB | 64KB | 12KB | 12KB |
| 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 |
| PWM Generators | 2 with independent timebases | 2 with independent timebases | 2 with independent timebases | 2 with independent timebases |
| Peripheral Pin Select | Yes | Yes | Yes | Yes |
| Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Balanced 32KB Flash for full FOC firmware (vs DSPIC33FJ12MC202-I/SS)
- Cost-optimal within the same footprint (vs DSPIC33FJ64MC202-I/SS)
- Dual independent PWM timebases with PPS (vs PIC18F25K80-I/SS)
Design Notes
All VDD and VSS pins must be connected; even one floating power pin can cause ICSP programming failure per Microchip programming guidance for this device. The internal core regulator requires its decoupling capacitor on the VCAP/VDDCORE pin - use the capacitance value specified in datasheet 70283K (typically a low-ESR ceramic) and place it directly at the pin. Supply is 3.0-3.6V only; a 3.3V LDO with at least 100mA headroom plus decoupling at each VDD pin is standard practice.
Use Peripheral Pin Select to route high-speed PWM away from analog feedback traces, then lock the PPS map at initialization before enabling peripherals. Keep VCAP, MCLR (with pull-up), and PGEC/PGED pairs short and away from PWM switching nodes. Note the PGEC3/PGED3 pair is not usable on this device - reserve a valid pair for a 5-pin ICSP header even in production boards to preserve field reprogramming.
Common pitfalls when migrating from PIC18 parts: the dsPIC33F is a 3.3V-only part with limited 5V tolerance - check pin tolerances before interfacing to 5V sensors or buses. PPS mapping must be explicitly unlocked (PPS unlock sequence) before assignment. Compiler math defaults differ for DSP accumulators; wrap multiply-accumulate routines with saturation checks in motor control loops. Estimated: FOC firmware typically requires 16-24KB, so budget Flash before choosing the 12KB cost-down variant.
Compliance Information
Lead-free plastic SSOP package per DigChip specification listing; the -I suffix denotes industrial temperature grade. Full RoHS/REACH status should be confirmed on the Microchip product page or distributor environmental data.
