DSPIC33FJ32GP101T-I/SO - 16-bit 16 MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33FJ32GP101T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.75 | $47.50 |
| 100 | $4.3 | $430.00 |
| 500 | $4.05 | $2,025.00 |
| 1,000 | $3.8 | $3,800.00 |
DSPIC33FJ32GP101T-I/SO Overview
A Digital Signal Controller is a hybrid of a microcontroller (MCU) and a digital signal processor (DSP). While an MCU handles general-purpose control tasks and a DSP excels at high-speed math, a DSC like the dsPIC33F family provides both: a 16-bit modified Harvard architecture CPU with DSP-engine instructions (MAC, dual operand fetch, 40-bit accumulators) plus peripherals such as ADCs, UARTs, SPI, I2C, and PWM outputs used in embedded control systems.
Key features include the 16 MIPS dsPIC33F core with C compiler efficiency, 32KB self-programmable FLASH with 11K x 24 instruction-word organization, 5V-tolerant I/O pins, up to three external interrupts (two remappable), selectable open-drain outputs and internal pull-ups, and In-Circuit Serial Programming (ICSP) plus in-circuit debugging via just two device pins using tools such as the MPLAB SNAP.
Architecturally, the dsPIC33F executes most instructions in a single cycle from a 24-bit instruction word. The DSP engine concurrently fetches two data operands while multiplying two W registers and accumulating the result, enabling efficient digital filter algorithms and high-speed precision control loops. Seamless migration paths exist to PIC24F/PIC24H MCUs and dsPIC30F DSCs, protecting software investment.
Typical applications include motor control, digital power supplies, sensor signal conditioning with on-chip digital filtering, and embedded industrial control where deterministic DSP performance is needed under pressure. The 18-pin SOIC suits cost- and space-sensitive designs that still require genuine DSP throughput.
Design consideration: the core is powered through an internal regulator - connect the VCAP pin to a low-ESR capacitor as specified in the datasheet; the device is rated for 3.3V operation and I/O must respect 5V-tolerant pin assignments.
This page synthesizes distributor availability, drop-in alternatives, design guidance, and AEO-optimized Q&A not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP101T-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 DSPIC33FJ32GP101T-I/SO (same form factor and footprint) — differing in Core Architecture, I/O Sink/Source Current, Operating Temperature, Package, Packaging.
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DSPIC33FJ32GP101-I/SO
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View Datasheet →DSPIC33FJ16GP101-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP101-E/SO
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DSPIC33FJ16GP101T-I/SO
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DSPIC33FJ32GP101T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC (modified Harvard) |
| Core Performance | 16 MIPS |
| Program Memory | 32KB FLASH (11K x 24) |
| RAM | 2KB |
| Supply Voltage | 2.5V to 3.3V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 18-SOIC (0.295 in, 7.50mm width) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T/R) |
| I/O Features | 5V-tolerant pins, up to 20 selectable open-drain and pull-ups |
| External Interrupts | 3 (two remappable) |
| I/O Sink/Source Current | 10 mA or 6 mA pin-specific standard; up to 16 mA or 12 mA non-standard |
| Programming / Debug | ICSP and in-circuit debug via MPLAB SNAP (2 device pins + reset) |
| DSP Engine | Single-cycle MAC, dual operand fetch, 40-bit accumulation |
| Series | dsPIC33FJ32GP101 (dsPIC 33F) |
| RoHS Status | Lead free / RoHS Compliant |
| Migration Path | PIC24F, PIC24H MCUs and dsPIC30F DSCs |
DSPIC33FJ32GP101T-I/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification / port B bit 0 |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification / port B bit 1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / change notification / port B bit 2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / encoder index / change notification / port B bit 3 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/CLKI/CN6/RA2 — Oscillator input / external clock input / change notification / port A bit 2 |
| Pin 8 | OSC2/CLKO/CN7/RA3 — Oscillator output / clock output / change notification / port A bit 3 |
| Pin 9 | VDD — Positive supply (2.5V to 3.3V) |
| Pin 10 | VCAP/VDDCORE — Internal core regulator output - connect stabilizing capacitor per datasheet |
| Pin 11 | PGD/EMUD1/RP40/RF3 — ICSP data / debug channel / remappable peripheral pin / port F bit 3 |
| Pin 12 | PGC/EMUC1/RP39/RF2 — ICSP clock / debug clock / remappable peripheral pin / port F bit 2 |
| Pin 13 | AN4/RP2/CN12/RB4 — Analog input 4 / remappable peripheral pin / change notification / port B bit 4 |
| Pin 14 | AN5/RP3/CN13/RB5 — Analog input 5 / remappable peripheral pin / change notification / port B bit 5 |
| Pin 15 | RP4/CN1/RF0 — Remappable peripheral pin / change notification / port F bit 0 |
| Pin 16 | RP5/CN15/RB6 — Remappable peripheral pin / change notification / port B bit 6 |
| Pin 17 | RP6/CN16/RB7 — Remappable peripheral pin / change notification / port B bit 7 |
| Pin 18 | VSS — Ground reference |
Typical Applications
DSPIC33FJ32GP101T-I/SO is suitable for 6 applications: Digital Power Conversion, Sensor Signal Conditioning and Digital Filtering, Industrial Control and Automation Nodes, Motor Control (Sensored, Low-Channel-Count), Embedded Audio and Signal Processing Blocks, Portable and Battery-Powered Instruments.
Digital Power Conversion
The DSPIC33FJ32GP101T-I/SO fits digital power supplies and converters where control-loop determinism defines output quality. Its 16 MIPS dsPIC33F core executes PI/PID voltage- and current-loop firmware with single-cycle MAC and 40-bit accumulation, per family datasheet 70000652f, so compensator updates land at consistent sample intervals. Placed as the supervisor/controller between the feedback divider and PWM gate logic, its remappable RPn pins route PWM, ADC trigger, and UART telemetry without external glue logic. The 2.5V-3.3V supply and 5V-tolerant inputs ease interfacing with 5V feedback circuits. Trade-off: 2KB RAM limits very large coefficient tables - keep compensator structures compact.
Recommended
Sensor Signal Conditioning and Digital Filtering
Analog sensor chains benefit directly from the GP101's on-chip ADC plus DSP engine: the datasheet states dsPIC33Fs are designed to execute digital filter algorithms, and the MAC instruction fetches two operands while multiplying and accumulating in one cycle - ideal for FIR/IIR filters that strip noise from pressure, strain, or current sensors. Mounted in the 18-SOIC footprint near the analog front end, it converts filtered readings over UART or I2C to a host controller. With 32KB FLASH there is headroom for calibration, compensation tables, and a bootloader. Its three external interrupts (two remappable) support threshold alerts; expect roughly 16 MIPS of filtering throughput as the design ceiling.
Recommended
Industrial Control and Automation Nodes
In factory automation nodes the GP101 handles sequencing, communications, and closed-loop corrections simultaneously. Its industrial rating of -40C to +85C covers cabinet and floor environments, while 5V-tolerant I/O with up to 20 selectable open-drain and pull-up configurations per datasheet 70000652f simplifies mixing with legacy 5V PLC signals. Remappable peripheral pins let UART, SPI, and I2C route to any of several physical pads, easing PCB layout around connectors. ICSP with an MPLAB SNAP updates firmware in the field through two I/O pins plus reset. Choose this part when a node needs modest DSP math (filtering, simple FFT diagnostics) alongside robust I/O handling within an 18-pin budget.
Recommended
Motor Control (Sensored, Low-Channel-Count)
For sensored DC and single-phase motor drives, the GP101 executes the current-loop filter and speed PI at 16 MIPS deterministically - critical because loop jitter maps directly to torque ripple. Its ADC samples phase currents while the DSP engine applies digital filtering; remappable PWM outputs drive a gate-driver stage. The 18-SOIC package suits compact single-motor boards in appliances, pumps, and fans. Note the trade-off versus the MC (Motor Control) family: dedicated complementary PWM with dead-time and fault shutdown is absent, so use gate drivers providing those protections externally. At 3.3V logic with 5V-tolerant pins, interfacing with 5V Hall sensors is straightforward through level-appropriate inputs.
Recommended
Embedded Audio and Signal Processing Blocks
Small audio processing tasks - active crossovers, tone control, echo, and AGC - map efficiently onto the GP101's single-cycle MAC pipeline. Operating at 16 MIPS, the device sustains several channels of moderate-rate filtering while managing I2C/UART control interfaces. The 2KB RAM frames practical block sizes (keep buffers to a few hundred samples), and 32KB FLASH holds codec-support code plus a command interpreter. The industrial 18-SOIC device suits embedded audio in appliances, intercoms, and instrumentation rather than high-fidelity consumer gear needing more MIPS or RAM. Because the ADC sampling and PWM/serial output timing derive from the same oscillator, input-output latency is predictable - valuable for delay-managed audio paths in closed systems.
Recommended
Portable and Battery-Powered Instruments
Handheld meters, loggers, and test probes gain from the GP101's low-voltage 2.5V-3.3V operation, which Xecor's comparison highlights as low-voltage power efficiency for the series. Single-supply 3.3V design removes level-shifting between the DSC, displays, and sensors; internal pull-ups and open-drain options reduce external components on button and I2C lines. The 18-SOIC's 7.50mm width fits slim PCBs, and ICSP allows final calibration firmware to be flashed after enclosure assembly using two accessible pads. Execute FFT-based analysis or smoothing filters on-device thanks to the DSP engine, transmitting results over UART to Bluetooth or USB bridge chips. Verify sleep currents against the datasheet for battery budget closure.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP101T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP101-I/SO | DSPIC33FJ16GP101-I/SO | DSPIC33FJ32GP101-E/SO | DSPIC33FJ16GP101T-I/SO |
|---|---|---|---|---|---|
| Package | 18-SOIC (7.50mm) | 18-SOIC (7.50mm) - same | 18-SOIC (7.50mm) - same | 18-SOIC (7.50mm) - same | 18-SOIC (7.50mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit dsPIC33F, 16 MIPS | 16-bit dsPIC33F, 16 MIPS | 16-bit dsPIC33F, 16 MIPS | 16-bit dsPIC33F, 16 MIPS | 16-bit dsPIC33F, 16 MIPS |
| Program Memory (FLASH) | 32KB (11K x 24) | 32KB (11K x 24) | 16KB | 32KB (11K x 24) | 16KB |
| Supply Voltage | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | -40C to +125C (E grade) | -40C to +85C |
| Packaging / Lifecycle | Tape & Reel, listed active/stocked | Tube, same die | Tube | Tube - reported obsolete (Xecor) | Tape & Reel |
| RoHS / Lead Free | RoHS compliant, lead free | RoHS compliant | RoHS compliant | RoHS compliant | RoHS compliant |
Key Differentiators
- Full 32KB FLASH in the 18-pin SOIC family (vs DSPIC33FJ16GP101-I/SO)
- Automated-assembly packaging with active stock (vs DSPIC33FJ32GP101-E/SO)
- Genuine DSP throughput in an MCU-class package (vs DSPIC33FJ32GP101-I/SO (same die))
Design Notes
Estimated: the internal core regulator requires the VCAP/VDDCORE pin (pin 10) to be connected to a low-ESR ceramic capacitor of the value specified in the Microchip family datasheet (70000652f, typically on the order of 10 uF with a parallel low-ESR cap as datasheet-specified). Omitting or undersizing this capacitor causes brown-out resets and erratic debugging behavior. Place the capacitor within a few millimeters of pin 10 with a solid via to the ground plane, and keep the 2.5V-3.3V supply within datasheet tolerance under all load conditions.
Reserve an ICSP header on every PCB: the MPLAB SNAP needs only MCLR, the PGD and PGC pins (11 and 12), VDD, and VSS for both programming and in-circuit debugging, per Microchip's product documentation. Route PGD/PGC as short, direct traces away from noisy PWM or oscillator nets, and avoid loading them with pull-ups stronger than the datasheet recommendation, since strong pull devices interfere with ICSP signaling. A standard 5-pin or 6-pin 2.54mm header keeps programming cost near zero across the product life.
Many pins are peripheral-remappable (RPn) and 5V-tolerant, but tolerance limits apply per pin assignment - verify each 5V-connected input against datasheet 70000652f rather than assuming blanket tolerance. Configure unused RPn pins as outputs driving low or inputs with internal pull-ups via the CN (change notification) configuration to prevent floating-input oscillation, which raises supply noise. Keep the external crystal loop (OSC1/OSC2, pins 7-8) compact with ground guard traces to limit jitter on the 16 MIPS core clock.
Configuration-word settings (oscillator source, watchdog, write protection) are programmed at flash time, not at reset pins - incorrect oscillator configuration words are the most common bring-up failure, leaving the device dead-clocked. Start new designs with the internal FRC oscillator in the configuration words, then switch to the crystal via firmware once the clock is proven. Also remember the 2KB RAM ceiling: large filter buffers or printf-heavy debug code overflow quickly; monitor the linker map during development.
Compliance Information
Distributor listings (BesenChips, DigiKey) report Lead free / RoHS Compliant for DSPIC33FJ32GP101T-I/SO. REACH, halogen-free, and conflict-minerals status not stated in retrieved web data - confirm via Microchip environmental pages.
