DSPIC33FJ32GP302T-I/MM - 16-bit DSC 40MIPS 32KB Flash | Microchip
MPN: DSPIC33FJ32GP302T-I/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.51 | $4.51 |
| 10 | $4.15 | $41.50 |
| 100 | $3.82 | $382.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.28 | $3,280.00 |
DSPIC33FJ32GP302T-I/MM Overview
A Digital Signal Controller combines the computational throughput of a Digital Signal Processor with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33FJ32GP302 belongs to the dsPIC33F family, which sits between general-purpose 16-bit MCUs (such as PIC24) and dedicated DSPs, making it a natural choice for embedded control systems that also need math-heavy signal processing.
Key features include a modified Harvard architecture with dual data buses, up to 40 MIPS operation from an internal PLL, a high-speed 10/12-bit ADC, up to four high-speed analog comparators, high-speed PWM outputs, and Peripheral Pin Select (PPS) remappable I/O that lets designers route digital peripherals to almost any pin. Industrial temperature rating (-40C to +85C) supports harsh environments.
Technical depth: the device executes most instructions in a single cycle at 3.3V, includes DSP multiply-accumulate (MAC) instructions with dual operands, and provides two address-generation units. Flash program memory is self-programmable for field updates. ICSP/ICD programming requires matched PGECx/PGEDx pin pairs.
Typical applications include digital power supplies, motor control, sensor signal conditioning, and portable instrumentation where 16-bit control plus DSP math are required.
Design consideration: supply voltage is 3.0V to 3.6V; ensure all VDD/VSS pin pairs are properly decoupled with 0.1uF ceramics and that the exposed pad is soldered to a grounded copper pour for thermal and electrical performance.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP302T-I/MM — 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 DSPIC33FJ32GP302T-I/MM (same form factor and footprint) — differing in Core Architecture, Package, Timers, RoHS Status, SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP202T-I/MM
✅ Drop-In✓ In Stock
$3.19 / Unit
View Datasheet →DSPIC33FJ32GP202T-I/SO
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33FJ64GP202T-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.96 / Unit
View Datasheet →DSPIC33FJ16GP202T-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC802T-I/MM
✅ Drop-In✓ In Stock
$4.5 / Unit
View Datasheet →DSPIC33FJ32GP302T-I/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit modified Harvard, DSC |
| Maximum CPU Speed | 40 MIPS (40 MHz) |
| Flash Program Memory | 32 KB (32K x 8) |
| SRAM | 2 KB |
| Supply Voltage Range | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-QFN-S (6x6 mm) with exposed pad |
| I/O Ports | 35 (family-level, per package up to 21 I/O) |
| ADC | 10-bit / 12-bit high-speed, 1 Msps |
| Comparators | Up to 4 high-speed comparators |
| PWM | High-speed PWM outputs |
| Timers | Multiple 16-bit timers (Timer1-3) |
| UART / SPI / I2C | 2 UART, 2 SPI, 2 I2C (family) |
| Peripheral Pin Select (PPS) | Yes, remappable I/O |
| Programming / Debug | ICSP/ICD via PGECx/PGEDx pairs |
| Mounting Type | Surface Mount |
| RoHS Status | Lead-free, RoHS compliant |
DSPIC33FJ32GP302T-I/MM Pin Configuration
| Pin 1 | MCLR — Master clear reset, programming voltage input |
| Pin 2 | AN0/VREF+/CN2B/RB0 — Analog input 0 / positive voltage reference / Port B bit 0 |
| Pin 3 | AN1/VREF-/CN3B/RB1 — Analog input 1 / negative voltage reference / Port B bit 1 |
| Pin 4 | AN2/SS1/CN4B/RB2 — Analog input 2 / SPI slave select 1 / Port B bit 2 |
| Pin 5 | AN3/INDX/CN5B/RB3 — Analog input 3 / encoder index / Port B bit 3 |
| Pin 6 | AN4/QEA/IC7/CN6B/RB4 — Analog input 4 / quadrature A / capture 7 / Port B bit 4 |
| Pin 7 | AN5/QEB/IC8/CN7B/RB5 — Analog input 5 / quadrature B / capture 8 / Port B bit 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN30/RA2 — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator crystal output / clock output |
| Pin 11 | VDD — Positive power supply (3.0 V to 3.6 V) |
| Pin 12 | RP1/AN6/OCFA/IC1/CN8B/RB6 — Remappable pin 1 / analog input 6 / PWM fault A / capture 1 / Port B bit 6 |
| Pin 13 | RP0/AN7/U1CTS/SDO1/IC2/CN9B/RB7 — Remappable pin 0 / analog input 7 / UART1 CTS / SPI data out 1 / capture 2 / Port B bit 7 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RP15/SOSCI/T2CK/CN1/RC13 — Remappable pin 15 / secondary oscillator input / Timer2 clock / Port C bit 13 |
| Pin 16 | RP14/SOSCO/T1CK/CN0/RC14 — Remappable pin 14 / secondary oscillator output / Timer1 clock / Port C bit 14 |
| Pin 17 | VDD — Positive power supply (3.0 V to 3.6 V) |
| Pin 18 | PGD3/EMUD3/RP13/SDI1/SCL1/RC12 — Programming data 3 / remappable pin 13 / SPI data in 1 / I2C clock 1 |
| Pin 19 | PGC3/EMUC3/RP12/SDA1/RP12/RC11 — Programming clock 3 / remappable pin 12 / I2C data 1 |
| Pin 20 | PGD2/EMUD2/RP11/RTCC/RP11/RC10 — Programming data 2 / remappable pin 11 / RTCC auxiliary / Port C bit 10 |
| Pin 21 | PGC2/EMUC2/RP10/U1TX/RC9 — Programming clock 2 / remappable pin 10 / UART1 transmit |
| Pin 22 | RP9/U1RX/PMCS1/RC8 — Remappable pin 9 / UART1 receive |
| Pin 23 | RP8/U1RTS/SCK1OUT/RC7 — Remappable pin 8 / UART1 RTS / SPI clock 1 output |
| Pin 24 | RP7/SDO2/U2TX/RF3 — Remappable pin 7 / SPI data out 2 / UART2 transmit |
| Pin 25 | RP6/SDI2/U2RX/RF2 — Remappable pin 6 / SPI data in 2 / UART2 receive |
| Pin 26 | RP5/SCK2/CN26/RB15 — Remappable pin 5 / SPI clock 2 / Port B bit 15 |
| Pin 27 | RP4/SCL2/CN24/RB14 — Remappable pin 4 / I2C clock 2 / Port B bit 14 |
| Pin 28 | RP3/SDA2/INT0/CN23/RB13 — Remappable pin 3 / I2C data 2 / external interrupt 0 / Port B bit 13 |
Typical Applications
DSPIC33FJ32GP302T-I/MM is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, Portable and Battery-Powered Instrumentation, Sensor Signal Conditioning and Data Acquisition, Audio Processing and Effects, Industrial Control and Embedded Automation Nodes.
Digital Power Supplies
The DSPIC33FJ32GP302T-I/MM fits digital power supply designs because its high-speed PWM, up to four high-speed analog comparators with direct fault pathways, and 1 Msps ADC cover the complete sensing-and-actuation chain for buck, boost, PFC, and LLC topologies. The 40 MIPS core with DSP MAC instructions executes voltage-mode or current-mode compensation loops within single switching periods even at hundreds of kHz. In a typical implementation the ADC samples the output voltage and inductor current, the comparator handles cycle-by-cycle overcurrent protection, and the PWM module adjusts duty cycle - achieving sub-microsecond loop latency that analog-only controllers cannot match with digital configurability.
Recommended
Brushless DC and PMSM Motor Control
The DSPIC33FJ32GP302T-I/MM suits motor control applications by combining high-speed PWM outputs for three-phase inverter drive with the ADC and comparator resources needed for sensorless back-EMF detection and overcurrent shutdown. The 40 MIPS 16-bit core runs field-oriented control and trapezoidal commutation algorithms using single-cycle DSP MAC instructions, while Peripheral Pin Select lets designers place PWM, UART, and encoder inputs on optimal PCB routing positions. Typical designs sample phase currents at PWM center, compute commutation state, and update duty cycle within the same period - enabling quiet, efficient motor operation in fans, pumps, and small appliances.
Recommended
Portable and Battery-Powered Instrumentation
The DSPIC33FJ32GP302T-I/MM works well in portable instrumentation because it delivers 40 MIPS signal-processing throughput on a compact 6x6 mm QFN footprint operating from a single 3.3V rail. The integrated 1 Msps ADC, programmable gain stages, and DSP MAC instructions support on-device filtering, FFT analysis, and calibration math without external signal-chain chips, reducing BOM cost and board area. Its low-power management features allow the CPU to sleep between acquisition bursts, extending battery life in handheld meters, data loggers, and environmental sensors where both compute performance and power budget are tight constraints.
Recommended
Sensor Signal Conditioning and Data Acquisition
The DSPIC33FJ32GP302T-I/MM is a strong choice for sensor signal conditioning because its 12-bit 1 Msps ADC, up to four high-speed comparators, and on-chip DSP instructions let one chip acquire, threshold-detect, and digitally filter analog sensor signals. Peripheral Pin Select maps UART/SPI/I2C to convenient pins for streaming data to hosts or radios. Designs typically bias the sensor into the 0-3.3V ADC range, sample synchronously, apply IIR/FIR filtering in software, and use a comparator for out-of-range alarms - replacing discrete op-amp filter chains and reducing calibration drift in industrial and medical sensing nodes.
Recommended
Audio Processing and Effects
The DSPIC33FJ32GP302T-I/MM serves embedded audio applications where 16-bit fixed-point DSP math at 40 MIPS is sufficient - guitar effects, intercom systems, and audio-guided appliances. The single-cycle DSP MAC instruction and dual operand fetch sustain real-time FIR/IIR filters and echo algorithms at standard 8-48 kHz sample rates, while the ADC captures microphone or line-level inputs and PWM can be used for class-D style output stages in cost-sensitive designs. On-chip Flash stores coefficient tables and firmware, and the exposed-pad QFN package aids low-noise grounding for sensitive analog front ends on compact two-layer boards.
Recommended
Industrial Control and Embedded Automation Nodes
The DSPIC33FJ32GP302T-I/MM fits industrial control nodes thanks to its -40C to +85C industrial rating, robust peripheral set (UART for Modbus, SPI/I2C for I/O expansion), and remappable pins that adapt one PCB design to multiple product variants. The 40 MIPS core handles PID control loops, protocol parsing, and safety checks concurrently, while high-speed comparators provide hardware-level fault response independent of software. Combined with an RS-485 transceiver or CAN controller, the device forms the intelligence of motor starters, lighting controllers, and factory sensor aggregators where deterministic 16-bit control and long-term availability matter.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP302T-I/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP202T-I/MM | DSPIC33FJ64GP202T-I/MM | DSPIC33FJ16GP202T-I/MM | DSPIC33FJ128MC802T-I/MM |
|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 32 KB | 32 KB | 64 KB | 16 KB | 128 KB |
| Peripheral Family | General Purpose (GP) | GP - same | GP | GP | Motor Control (MC) |
| 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 |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Cost-optimized 32 KB Flash point in the family (vs DSPIC33FJ64GP202T-I/MM)
- General-purpose peripheral set with PPS flexibility (vs DSPIC33FJ128MC802T-I/MM)
- Adequate memory for compact control firmware (vs DSPIC33FJ16GP202T-I/MM)
Design Notes
Supply the DSPIC33FJ32GP302T-I/MM from a clean 3.3V rail within the 3.0V-3.6V datasheet window. Connect all VDD pins (11, 17) and all VSS pins (8, 14); omitting any pair can cause erratic operation or permanent damage. Place one 0.1uF ceramic capacitor at each VDD/VSS pair plus one 4.7uF-10uF bulk capacitor near the device. Estimated: a fully loaded 40 MIPS core draws on the order of tens of milliamps (per datasheet typical IDD curves), so an LDO such as the MCP1702 with 250 mA capability is generally sufficient.
Solder the exposed pad of the 28-QFN-S package to a grounded copper pour with an array of thermal vias - the pad is the primary ground and thermal path, and relying only on perimeter pins degrades both signal integrity and ADC accuracy. Route the analog pins (2-7) away from PWM and clock traces; use a solid ground plane under the ADC inputs. Keep the crystal (pins 9-10) within a few millimeters of the device with short guard-ring traces to minimize oscillator jitter.
Two common programming mistakes: (1) ICSP requires matched PGECx/PGEDx pairs - if PGEC2 carries ICSPCLK, ICSPDAT must connect to PGED2; mixing pairs prevents device detection in MPLAB X. (2) MCLR must be pulled up through a 10k resistor and kept accessible for the programming header; enabling MCLR as a general-purpose input in configuration bits bricks in-circuit reprogramming. Also remember Peripheral Pin Select assignments must be locked with the PPS unlock sequence before peripherals function.
Configure unused analog-capable pins (RB0-RB7, pins 2-7 and 12-13) as digital outputs driving low or as inputs with external pull resistors to prevent floating-node noise coupling into the ADC reference. For PWM signals driving power stages, series 22-33 ohm resistors at the output pins damp ringing caused by trace inductance, reducing EMI and protecting the pin's output drivers from overshoot beyond the 3.6V supply.
Compliance Information
Distributor and digchip data describe the package as lead-free plastic, RoHS compliant, industrial -40C to +85C grade. Not an automotive AEC-Q100 part. REACH and halogen-free status not stated in provided data.
