DSPIC33FJ32GP202T-I/SO - 16-bit DSC 40 MIPS 32KB Flash | Microchip
MPN: DSPIC33FJ32GP202T-I/SO ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33FJ32GP202T-I/SO Overview
A Digital Signal Controller combines the computational architecture of a Digital Signal Processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). In the system hierarchy: DSC -> 16-bit microcontroller family -> embedded processor -> semiconductor. The dsPIC33F family sits within Microchip's dsPIC33FJ General Purpose (GP) subfamily, designed for control loops that benefit from single-cycle MAC and DSP instructions without moving to a full DSP chip.
Key features include a modified Harvard 16-bit core clocked up to 40 MIPS from an internal PLL, high-speed 12-bit ADC with up to 500 ksps conversion, and up to four high-speed analog comparators with direct PWM fault connection. The device also integrates output compare/PWM modules, input capture, multiple UART, SPI, and I2C serial interfaces, plus an on-chip LDO regulator enabling operation from a single 3.0V to 3.6V supply.
The core uses a pipelined architecture supporting C compiler development via MPLAB X IDE and XC16 compiler, with In-Circuit Serial Programming (ICSP) through the standard five-pin PGC/PGD interface. Flash program memory is specified for 1000 erase/write cycles minimum, and self-programming support enables field bootloader designs.
Typical applications include digital power supplies, brushless DC and PMSM motor control, LED lighting ballasts, sensor signal conditioning, and general industrial control where DSP-class math meets MCU-class integration.
Design consideration: all I/O is 5V-tolerant only where the datasheet explicitly notes it; the 3.0V-3.6V supply range means level shifting is required for 5V legacy interfaces.
This page synthesizes distributor inventory data, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP202T-I/SO — 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 DSPIC33FJ32GP202T-I/SO (same form factor and footprint) — differing in Operating Temperature, Package, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP202T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GP202T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.9 / Unit
View Datasheet →DSPIC33FJ128GP202T-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC202T-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32GP202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit modified Harvard, DSP-enhanced (DSC) |
| Maximum Clock Speed | 40 MIPS |
| Flash Program Memory | 32KB (32K x 8) |
| SRAM | 2KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, I suffix) |
| Package | 28-SOIC (0.295in, 7.50mm width) |
| Mounting Type | Surface Mount |
| ADC Resolution | 12-bit |
| Timers | 5 x 16-bit timers |
| Analog Comparators | Up to 2 high-speed comparators |
| Serial Interfaces | UART, SPI, I2C |
| Programming Interface | ICSP (PGC/PGD), In-Circuit Serial Programming |
| Tape & Reel Suffix | T (taped and reeled) |
| RoHS Status | Compliant (lead-free per JLCPCB listing) |
| Life Cycle Stage | Active |
DSPIC33FJ32GP202T-I/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/CN3/RB0 — Analog input 0 / positive voltage reference / port B0 |
| Pin 3 | AN1/VREF-/CN2/RB1 — Analog input 1 / negative voltage reference / port B1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 / port B2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / quadrature index / port B3 |
| Pin 6 | AN4/RP3/CN6/RB4 — Analog input 4 / remappable pin RP3 / port B4 |
| Pin 7 | VDD — Power supply (3.0V to 3.6V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Oscillator crystal input / external clock input / port A2 |
| Pin 10 | OSC2/CLKO/CN8/RA3 — Oscillator crystal output / clock output / port A3 |
| Pin 11 | VDD — Power supply |
| Pin 12 | VSS — Ground reference |
| Pin 13 | AN5/RP2/RB5 — Analog input 5 / remappable pin RP2 / port B5 |
| Pin 14 | AN6/OCFA/RP1/RB6 — Analog input 6 / compare fault A / remappable pin RP1 / port B6 |
| Pin 15 | AN7/RP0/RB7 — Analog input 7 / remappable pin RP0 / port B7 |
| Pin 16 | AN8/RP4/RTCC/RB8 — Analog input 8 / remappable pin RP4 / RTCC alarm / port B8 |
| Pin 17 | AN9/RP5/RB9 — Analog input 9 / remappable pin RP5 / port B9 |
| Pin 18 | AN10/RP6/RB10 — Analog input 10 / remappable pin RP6 / port B10 |
| Pin 19 | AN11/RP7/RB11 — Analog input 11 / remappable pin RP7 / port B11 |
| Pin 20 | AN12/RP8/RB12 — Analog input 12 / remappable pin RP8 / port B12 |
| Pin 21 | AN13/RP9/RB13 — Analog input 13 / remappable pin RP9 / port B13 |
| Pin 22 | AN14/RP10/RB14 — Analog input 14 / remappable pin RP10 / port B14 |
| Pin 23 | AN15/RP11/RB15 — Analog input 15 / remappable pin RP11 / port B15 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Power supply |
| Pin 26 | SOSCI/CN1/RA4 — Secondary oscillator input / port A4 (also programming data PGD on this family) |
| Pin 27 | SOSCO/T1CK/CN0/RA3 — Secondary oscillator output / Timer1 clock / port A3 (programming clock PGC) |
| Pin 28 | VSS — Ground reference |
Typical Applications
DSPIC33FJ32GP202T-I/SO is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, LED Lighting Ballasts and Drivers, Sensor Signal Conditioning and Data Acquisition, Industrial Control and Automation Nodes, Audio Signal Processing Accessories.
Digital Power Supplies
The DSPIC33FJ32GP202T-I/SO fits digital power conversion (AC-DC, DC-DC, PFC stages) because its 40 MIPS DSP core executes PI and predictive control loops with single-cycle MAC instructions, and its 12-bit ADC can sample the output voltage and inductor current synchronized to the PWM period. The high-speed comparators provide cycle-by-cycle overcurrent protection with direct PWM fault connection, eliminating external protection ICs. Implemented between the sensing divider and the gate-driver input, the DSC replaces analog error amplifiers with firmware that can adapt compensation on the fly; the trade-off is that 32KB Flash constrains algorithm complexity, so compact fixed-point control code is essential.
Recommended
Brushless DC and PMSM Motor Control
For sensorless BLDC and PMSM drives, the DSPIC33FJ32GP202T-I/SO combines a 40 MIPS core with input capture for back-EMF zero-crossing detection, output compare PWM channels for six-step or sinusoidal drive, and a 12-bit ADC for phase-current sensing triggered from the PWM time base. The high-speed comparators enable hardware overcurrent shutdown within one PWM cycle, a critical safety function. For field-oriented control, the DSP multiply instructions keep the Clarke/Park transform loop within budget. Note that 32KB Flash limits complex FOC plus communication stacks, so choose the 64KB variant if a full FOC plus bootloader is planned.
Recommended
LED Lighting Ballasts and Drivers
Digital LED drivers benefit from the DSPIC33FJ32GP202T-I/SO's ability to run constant-current loops at high PWM frequency with 40 MIPS headroom, dim via PWM or analog dimming inputs read by the 12-bit ADC, and react to fault conditions through the on-chip comparators. The UART enables DALI or DMX-style dimming protocol handling in firmware, while the I2C/SPI ports interface ambient-light sensors or EEPROM for stored profiles. Because the SOIC-28 footprint and 3.3V operation support compact driver boards, the same PCB can span wattage tiers by retargeting firmware - a meaningful advantage for lighting product families.
Recommended
Sensor Signal Conditioning and Data Acquisition
The 12-bit ADC of the DSPIC33FJ32GP202T-I/SO, combined with DSP instructions for digital filtering (FIR/IIR, averaging, RMS computation), makes the part effective as a single-chip sensor front end for pressure, temperature, and strain inputs. The ADC can scan multiple channels with autoscan sequencing, and conversion results feed fixed-point filters at 40 MIPS without host intervention. UART output streams conditioned data to a host, while SPI/I2C connect external precision ADCs when higher resolution is needed. The industrial -40C to +85C rating covers unconditioned field installations, and the on-chip comparators can threshold alarms in hardware with zero firmware latency.
Recommended
Industrial Control and Automation Nodes
As a general industrial control node, the DSPIC33FJ32GP202T-I/SO provides UART for Modbus RTU, SPI/I2C for local peripherals, five 16-bit timers for scheduling and quadrature-style counting, and sufficient 40 MIPS headroom for control logic plus protocol handling. The 3.0V-3.6V supply range works directly from standard 3.3V industrial rails, and the -40C to +85C industrial temperature grade plus active lifecycle status ensure long-term sourcing stability. In-Circuit Serial Programming through the PGC/PGD pins allows field firmware updates without removing the board, and 1000-cycle Flash endurance supports bootloader-based upgrades over the service life of the equipment.
Recommended
Audio Signal Processing Accessories
Entry-level audio processing - sample-rate conversion stubs, tone control, simple codecs interfacing - can be handled by the DSPIC33FJ32GP202T-I/SO thanks to its DSP MAC instructions running at 40 MIPS. The SPI port connects external audio ADC/DAC devices, and the UART can bridge to Bluetooth or USB-bridge modules. While the part lacks a dedicated audio codec and I2S peripheral, its deterministic interrupt latency keeps audio buffer underruns manageable at modest sample rates. For developers already invested in the dsPIC33F toolchain, this avoids introducing a second processor family into a mixed product line, at the cost of higher firmware effort versus dedicated audio DSPs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP202T-E/SO | DSPIC33FJ64GP202T-I/SO | DSPIC33FJ128GP202T-I/SO | DSPIC33FJ32MC202T-I/SO | DSPIC33FJ32GP202-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (7.50mm) | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32KB | 32KB | 64KB | 128KB | 32KB | 32KB |
| Core Performance | 16-bit, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS |
| Operating Temperature | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| 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 |
| Peripheral Variant | GP (general purpose): compare/PWM mix, comparators | GP - same peripheral set | GP - same peripheral set | GP - same peripheral set | MC - motor-control PWM set | GP - same peripheral set |
| Delivery Packaging | Tape & Reel (T suffix) | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tube |
Key Differentiators
- Extended temperature availability in same footprint (vs DSPIC33FJ32GP202T-E/SO)
- Cost-optimized memory point (vs DSPIC33FJ64GP202T-I/SO)
- General-purpose peripheral mix for analog-heavy designs (vs DSPIC33FJ32MC202T-I/SO)
Design Notes
Supply the DSPIC33FJ32GP202T-I/SO from a clean 3.0V-3.6V rail; the family includes an on-chip regulator, but input ripple couples into ADC references. Place 0.1uF ceramic capacitors at every VDD/VSS pair (pins 7/8, 11/12, 24/25, 28) plus a 4.7uF-10uF bulk capacitor near the device. On digital-power designs, derive VDD from a separate low-noise LDO rather than the same rail driving gate drivers. Estimated: at 40 MIPS typical core current is in the tens of mA range per family data - verify exact ICC from the electrical characteristics table of datasheet 70290J.
Route the PGC/PGD programming pair (pins 27/26) to a standard 5-pin ICSP header (MCLR, VDD, VSS, PGC, PGD) on every production PCB - retrofitting access later is impossible once the board is enclosed. Keep the OSC1/OSC2 crystal traces (pins 9/10) short and guard them with ground if the PLL is used at 40 MIPS. Analog inputs AN0-AN15 share port B pins with digital remappable peripherals; on mixed boards, isolate ADC-sensing traces from PWM gate-drive returns to prevent ground-bounce-induced conversion error.
Three common pitfalls: (1) The T suffix part arrives in tape-and-reel with minimum order quantities exceeding single tubes - order the non-T part for prototyping. (2) The remappable peripheral pin (RPn) scheme lets UART/SPI appear on many pins, but configuration-bit errors can lock out ICSP; always verify the debug/programming channel assignment in firmware before changing configuration fuses. (3) MCLR (pin 1) needs a pull-up resistor (4.7k-10k) to VDD; leaving it floating causes spurious resets in electrically noisy motor-drive environments.
The 28-SOIC 7.50mm package dissipates only modest power (core plus I/O currents), so heatsinking is not normally required. Estimated: with tens of mA of core current at 3.3V, internal dissipation is well under 200 mW, keeping junction rise minimal. For extended-temperature designs using the E-grade variant at +125C ambient, recheck the datasheet power-derating curves because package theta_JA on SOIC-28 is relatively high, and total allowed dissipation shrinks at elevated ambient temperatures.
Compliance Information
RoHS compliance and lead-free status per JLCPCB part listing (C3220394). REACH, halogen-free, and conflict-minerals status not stated in provided data.
