DSPIC33FJ32MC302-E/SP - 16-bit DSC, 40 MIPS, 32KB Flash | Microchip
MPN: DSPIC33FJ32MC302-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.52 | $6.52 |
| 10 | $5.87 | $58.70 |
| 100 | $5.22 | $522.00 |
| 500 | $4.73 | $2,365.00 |
| 1,000 | $4.31 | $4,310.00 |
DSPIC33FJ32MC302-E/SP Overview
A Digital Signal Controller combines the computational capability of a digital signal processor with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP: like an MCU it offers Flash memory, interrupts, and rich on-chip peripherals, but its modified Harvard 16-bit DSP engine adds hardware multiply-accumulate, division support, and DSP instruction support for high-speed repetitive computations such as control-loop math.
Key differentiating features include the 40 MIPS operation at 3.3V, Direct Memory Access (DMA) channels that move data without CPU intervention, and the motor-control oriented peripheral set: high-speed PWM outputs, up to four high-speed analog comparators with direct PWM fault connection, and a 10-bit ADC with simultaneous multi-channel sampling. This analog-plus-PWM integration allows closed-loop motor control entirely on-chip.
Architecturally, the dsPIC33F family is pin compatible with the PIC24HJ family, giving designers an upgrade or downgrade path within the same footprint. The device includes an internal fast RC oscillator, so many applications run without an external crystal, while PLL options scale the core to 40 MIPS.
Typical applications include brushless DC and PMSM motor drives, digital power supplies (SMPS/UPS), power inverters, and sensor-based industrial control where DSP-class math meets MCU-class peripherals.
Design consideration: at 40 MIPS the core draws significant current, so budget 3.3V regulator headroom and add proper decoupling; the extended-temperature -E grade eases thermal margin at +125C ambient.
This page synthesizes distributor data, drop-in alternatives, and engineering design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33FJ32MC302-E/SP — 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 DSPIC33FJ32MC302-E/SP (same form factor and footprint) — differing in Operating Temperature, Package, I/O Ports, Motor Control PWM, SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC302-I/SP
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33FJ32MC202-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.25 / Unit
View Datasheet →DSPIC33FJ32MC202-E/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.6 / Unit
View Datasheet →DSPIC33FJ64MC202-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.13 / Unit
View Datasheet →PIC24HJ32GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC302-E/SP Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F, 16-bit |
| Max CPU Speed | 40 MIPS |
| Program Memory | 32KB (32K x 8) Flash |
| SRAM | 4KB (4K x 8) |
| Supply Voltage | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| DMA | Yes |
| Motor Control PWM | Yes (high-speed PWM) |
| Analog Comparators | Up to 4 high-speed comparators |
| ADC | 10-bit, high-speed |
| Operating Temperature | -40C to +125C (extended, E grade) |
| Package | 28-pin SPDIP (SP) |
| Mounting Type | Through Hole |
| Lead Free | Yes |
| Family Compatibility | Pin compatible with PIC24HJ family |
DSPIC33FJ32MC302-E/SP 28-pin spdip (sp) Pin Configuration Guide
Pin configuration for DSPIC33FJ32MC302-E/SP (28-pin spdip (sp) 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 DSPIC33FJ32MC302-E/SP.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32MC302-E/SP is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies (SMPS / UPS), Power Inverters and Solar Converters, Sensor-Based Industrial Control, Audio Signal Processing, Embedded Control Prototyping and Education.
BLDC / PMSM Motor Control
The DSPIC33FJ32MC302-E/SP is purpose-built for brushless DC and permanent-magnet synchronous motor drives. Its high-speed PWM module generates complementary outputs (PWM1L1/H1 and PWM1H2/L2 on pins 21-24) for three-phase bridges, while the four high-speed comparators provide hardware overcurrent trip directly into the PWM fault logic, shutting down the bridge in nanoseconds without CPU latency. Running at 40 MIPS, the 16-bit DSP engine executes field-oriented control (Clarke/Park transforms, PI loops) within typical 10-20 kHz PWM periods. The 10-bit ADC samples phase currents synchronously with PWM using the ADC trigger. The 32KB Flash hosts FOC plus communications with headroom. Use the -E extended temperature grade for drives in hot enclosures or outdoor equipment.
Recommended
Digital Power Supplies (SMPS / UPS)
In digitally controlled switch-mode power supplies and UPS systems, the DSPIC33FJ32MC302-E/SP replaces analog control loops with firmware. The high-speed PWM supports complementary outputs with programmable dead time for half-bridge and full-bridge topologies, and the ADC can sample output voltage and inductor current every switching cycle. The on-chip high-speed comparators implement cycle-by-cycle current limiting in hardware, a critical safety function that does not depend on software execution time. At 40 MIPS, compensator calculations (Type-III or 2p2z) complete well within 100-500 kHz switching periods. The 3.0V-3.6V supply and DMA offload keep firmware deterministic. The -40C to +125C -E rating suits power stages in sealed telecom rectifiers.
Recommended
Power Inverters and Solar Converters
Grid-tied and off-grid inverters need simultaneous fast control of a DC-DC stage and a DC-AC stage, which the DSPIC33FJ32MC302-E/SP handles with its dual-role peripheral set. The motor-control PWM provides phase-shifted or complementary drive for the boost stage while the 10-bit ADC multiplexes across DC bus voltage, grid voltage, and current sense channels. DMA moves ADC results to RAM without interrupting the control loop. The extended -40C to +125C rating of the -E/SP version tolerates the elevated ambient inside inverter enclosures, reducing forced-air cooling needs. MPPT algorithms, grid synchronization (software PLL), and anti-islanding logic all fit within 32KB Flash for single-phase implementations.
Recommended
Sensor-Based Industrial Control
For industrial nodes that combine analog sensing with control actuation, the DSPIC33FJ32MC302-E/SP offers 21 I/O, a 10-bit ADC, UART, SPI, and I2C in one 28-pin through-hole device that is easy to hand-solder for low-volume machinery. The 40 MIPS DSP engine performs digital filtering (FIR/IIR) on noisy sensor data in real time, something an 8-bit MCU struggles with at comparable sampling rates. DMA streams ADC samples while the CPU runs the control logic. The internal fast RC oscillator supports cost-sensitive designs without a crystal, though precision timing applications should add one. The -E extended grade covers unheated factory floors and cold-chain equipment down to -40C.
Recommended
Audio Signal Processing
The 16-bit DSP instruction set of the DSPIC33FJ32MC302-E/SP, with hardware multiply-accumulate, supports moderate-rate audio processing such as active crossovers, EQ filters, and limiters in embedded products. At 40 MIPS, single-precision biquad chains process multiple channels at 48 kHz sample rates with predictable cycle budgets. The 10-bit ADC and PWM can serve as low-cost DAC/ADC paths for non-hi-fi control audio, while SPI connects external high-quality codecs when needed. The 4KB SRAM constrains very long delay effects, so verify buffer sizing early. For products facing wide ambient swings, the -40C to +125C -E grade eliminates thermal derating concerns in fanless enclosures.
Recommended
Embedded Control Prototyping and Education
The 28-pin SPDIP through-hole package of the DSPIC33FJ32MC302-E/SP makes it ideal for prototyping boards, socketed evaluation fixtures, and university embedded-systems labs where soldering SMD parts is impractical. It delivers a genuine 16-bit DSP core at 40 MIPS with DMA, advanced analog, and PWM - the same peripheral concepts used in production motor-drive and power-electronics designs - at through-hole convenience. MPLAB X IDE, the XC16 compiler, and low-cost programmers (PICkit class) provide a complete toolchain. Because it is pin compatible with the PIC24HJ family, students can migrate to other family members on the same board. The 32KB Flash accommodates full course projects including communication stacks.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC302-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC302-I/SP | DSPIC33FJ32MC202-I/SP | DSPIC33FJ32MC202-E/SP | DSPIC33FJ64MC202-I/SP | PIC24HJ32GP202-I/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 32KB | 32KB | 32KB | 32KB | 64KB | 32KB |
| SRAM | 4KB | 4KB | 4KB | 4KB | 8KB | 4KB |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
| High-Speed Comparators | Up to 4 | Up to 4 | Reduced analog set | Reduced analog set | Reduced analog set | Not DSC motor-control analog |
| 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
- Extended -40C to +125C temperature rating in the same footprint (vs DSPIC33FJ32MC302-I/SP)
- Four high-speed comparators with direct PWM fault connection (vs DSPIC33FJ32MC202-E/SP)
- DSP-class math throughput versus general-purpose MCU (vs PIC24HJ32GP202-I/SP)
Design Notes
Supply the DSPIC33FJ32MC302-E/SP from a clean 3.3V rail (3.0V-3.6V range). At 40 MIPS the core current is substantially higher than at lower Fcy, so size the regulator for worst-case full-speed execution plus I/O loads. Place 0.1uF ceramic decoupling at each VDD/VSS pair (pins 13/20 VDD, pins 8/17 VSS) with a 4.7uF-10uF bulk capacitor nearby. If using the internal regulator configurations of the family, follow the datasheet capacitor recommendations on VCAP pins exactly - an undersized VCAP capacitor is a common cause of erratic reset behavior.
Even in through-hole prototyping, keep the PWM output traces (pins 21-24) away from the analog inputs (pins 2-7) to prevent switching noise coupling into ADC readings. Use a star ground: tie power ground (MOSFET gate returns) and analog ground at a single point near the MCU. When sampling phase currents, trigger the ADC synchronously from the PWM module rather than free-running, and sample during the PWM off-time window to avoid switching transients. Layout discipline here saves weeks of firmware noise-filtering workarounds.
Configure configuration words (FOSC, FWDT, FPOR) deliberately at first programming - default oscillator settings will not yield 40 MIPS, and the watchdog default state can reset boards unexpectedly. Remember that comparator inputs are multiplexed with AN pins: if your substitute part is an MC202 variant, comparator-dependent overcurrent protection will silently disappear even though the code compiles. Also confirm MCLR is pulled up (10k to 3.3V) and kept below the absolute maximum; floating MCLR causes spurious resets during motor switching events.
Compliance Information
Package described as lead-free plastic in distributor datasheet summaries (DigChip). Full RoHS/REACH certificates should be requested from Microchip.
