DSPIC33FJ16GP102-I/SO - 16-bit DSC, 16 MIPS, 16KB Flash | Microchip
MPN: DSPIC33FJ16GP102-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.65 | $3.65 |
| 10 | $3.21 | $32.10 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
DSPIC33FJ16GP102-I/SO Overview
A Digital Signal Controller (DSC) is a hybrid architecture that merges a modified Harvard MCU core with single-cycle multiply-accumulate (MAC) hardware and DSP-aware addressing modes. In the signal-processing hierarchy it sits between a microcontroller (MCU) and a full digital signal processor (DSP): richer than an MCU because it can close tight sensor and motor-control loops in hardware, lighter than a stand-alone DSP because it still runs C code with conventional peripherals. The dsPIC33F family specifically targets precision real-time control in motor drive, power conversion and sensor-fusion products.
Key features of the DSPIC33FJ16GP102-I/SO include a 16-channel 10/12-bit ADC with hardware accumulation and up to 500 ksps conversion rate, three 16-bit timers, an input capture and output compare/PWM block, two UART, one SPI and one I2C interface, plus three external interrupts. The device operates from 3.0 V to 3.6 V (typical 3.3 V), supports industrial -40 °C to +85 °C ambient temperatures in the I-grade, and offers JTAG-based in-circuit debugging through the MPLAB Snap and ICD programmers.
Architecturally the device uses a 16-bit modified Harvard core with single-cycle 16×16 MAC, a barrel shifter and dual-bus fetch, plus a fast interrupt controller with hardware-stacked context saving. PPS allows remapping of digital I/O, timers and serial ports to a flexible subset of the 28 pins, while the analog block shares its own dedicated voltage-rail pin pair to minimize digital switching noise coupling.
Typical applications include low-cost BLDC and stepper motor drives, digital power conversion (PFC, LLC, full-bridge), sensor signal conditioning, industrial automation and consumer appliance control. In BLDC applications the high-speed ADC, PWM and DSP throughput let the device run field-oriented control (FOC) without an external DSP.
When designing with this part, ensure ADC inputs share a clean analog ground island and use PPS to route peripherals only after re-reading the pin-assignment table - peripherals mapped to remappable pads must avoid any pad marked "RPn" that is not driven by the I/O multiplexer. Decouple VDD/VSS with at least one 100 nF plus one 10 µF capacitor placed within 3 mm of the pins.
This page synthesizes distributor pricing, parametric cross-references, drop-in alternatives and design notes that complement the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ16GP102-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 DSPIC33FJ16GP102-I/SO (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, Timers, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16GP102T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GP102-I/SP
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →DSPIC33FJ16GP102-E/SO
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →DSPIC33FJ16GP102T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32GP102-I/SO
✅ Drop-In✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33FJ32GP102T-I/SO
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →DSPIC33FJ16GP102-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33 modified Harvard DSC |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data RAM | 1 KB |
| Operating Frequency | Up to 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 3.0 V to 3.6 V (typ 3.3 V) |
| Operating Temperature | -40 °C to +85 °C (Industrial - I grade) |
| ADC | 10/12-bit, up to 500 ksps, multiple channels |
| Timers | 3 x 16-bit Timer/Counter |
| Communication Interfaces | 2x UART, 1x SPI, 1x I2C |
| PWM / Output Compare | Yes (motor-control and PWM capable) |
| Peripheral Pin Select (PPS) | Yes - remappable digital peripherals |
| External Interrupts | 3 |
| I/O Sink/Source | 10 mA / 6 mA standard, up to 16 mA / 12 mA non-standard |
| 5V Tolerant Inputs | Yes (selectable digital I/O pins) |
| Package | 28-pin SOIC (SO) wide-body, surface mount |
| Debug | JTAG via MPLAB Snap / ICD 3 |
| RoHS Compliance | Compliant (per DigiKey listing) |
DSPIC33FJ16GP102-I/SO Pin Configuration
| Pin 1 | SDA/RP9/CN21 — I2C data / remappable peripheral pin |
| Pin 2 | RA0 — Port A bit 0 (analog/digital I/O) |
| Pin 3 | RA1 — Port A bit 1 (analog/digital I/O) |
| Pin 4 | RB0 — Port B bit 0 (PWM, analog, PPS remappable) |
| Pin 5 | RB1 — Port B bit 1 (PWM, analog, PPS remappable) |
| Pin 6 | RB2 — Port B bit 2 (PWM, analog, PPS remappable) |
| Pin 7 | RB3 — Port B bit 3 (PWM, analog, PPS remappable) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA2 — Port A bit 2 (analog/digital I/O) |
| Pin 10 | RA3 — Port A bit 3 (analog/digital I/O) |
| Pin 11 | RB4 — Port B bit 4 (PWM, PPS remappable) |
| Pin 12 | RB5 — Port B bit 5 (PWM, PPS remappable) |
| Pin 13 | RB6 — Port B bit 6 (PWM, PPS remappable) |
| Pin 14 | RB7 — Port B bit 7 (PWM, PPS remappable) |
| Pin 15 | AVSS — Analog ground |
| Pin 16 | AVDD — Analog supply (3.0-3.6 V) |
| Pin 17 | RA4 — Port A bit 4 (analog/digital I/O) |
| Pin 18 | MCLR — Master Clear reset (active low) |
| Pin 19 | RA5 — Port A bit 5 (analog/digital I/O) |
| Pin 20 | OSC1/CLKI — Crystal oscillator input or external clock |
| Pin 21 | OSC2/CLKO — Crystal oscillator output |
| Pin 22 | VDD — Digital supply (3.0-3.6 V) |
| Pin 23 | PGED1/RP5/CN27 — Programming data / remappable I/O |
| Pin 24 | PGEC1/RP6/CN28 — Programming clock / remappable I/O |
| Pin 25 | SCL/RP8/CN20 — I2C clock / remappable peripheral pin |
| Pin 26 | RB8 — Port B bit 8 (PWM, PPS remappable) |
| Pin 27 | RB9 — Port B bit 9 (PWM, PPS remappable) |
| Pin 28 | RB10/RP10 — Port B bit 10 / remappable peripheral pin |
Typical Applications
DSPIC33FJ16GP102-I/SO is suitable for 7 applications: BLDC Motor Control (Trapezoidal / Sensorless), Digital Power Conversion (PFC, LLC, Full-Bridge), Sensor Signal Conditioning and Industrial Automation, Consumer Appliance Control (Washers, Microwaves, HVAC), Audio Effects and Digital Filtering, Automotive Body and Lighting Modules, IoT Edge Sensor Nodes.
BLDC Motor Control (Trapezoidal / Sensorless)
The DSPIC33FJ16GP102-I/SO's 16 MIPS DSP throughput, 10/12-bit ADC and PWM/Output Compare peripherals let it close trapezoidal commutation loops on small BLDC fans and pumps under USD 5 BOM. The 16 KB Flash fits lookup-table-based commutation plus UART telemetry, while 1 KB SRAM is enough for sensorless zero-cross detection using ADC hardware accumulation. Per Microchip datasheet 70000652F, PPS routes the PWM outputs and ADC triggers to any GPIO, easing field-orientation of the three-phase bridge. Designers should switch to the DSPIC33FJ16MC102 variant only when FOC sensorless control above 50 kHz PWM is needed.
Recommended
Digital Power Conversion (PFC, LLC, Full-Bridge)
The DSPIC33FJ16GP102-I/SO is used as a low-cost mixed-signal controller in sub-100 W PFC and LLC converters where DSP throughput and the fast ADC are required but a dedicated DSP is overkill. The 16 MIPS core executes average-current-mode control loops in fewer than 2 µs of latency, while the on-chip ADC samples current and voltage at 500 ksps. PPS lets the designer remap PWM and ADC triggers to any pin, simplifying the layout of a 4-layer power board. The 3.0–3.6 V supply range drops directly onto a 3.3 V bias rail derived from an auxiliary flyback winding.
Recommended
Sensor Signal Conditioning and Industrial Automation
Industrial sensor nodes use the DSPIC33FJ16GP102-I/SO to acquire strain-gauge, thermocouple or load-cell signals through the on-chip ADC, run linearization in the DSP engine and report data over UART or SPI. The 16 MIPS core handles polynomial compensation plus digital filtering at sample rates up to 10 kHz without DMA overhead. Per the Microchip datasheet 70000652F, three external interrupts let the MCU wake on limit-switch events for low-power duty-cycling. The 28-SOIC wide-body package is friendly to hand-rework during field service.
Recommended
Consumer Appliance Control (Washers, Microwaves, HVAC)
Consumer white-goods designers choose the DSPIC33FJ16GP102-I/SO for user-interface, motor and heater control in a single chip. The DSP engine smooths the AC-line zero-crossing detection while PWM drives triac-fired heaters or universal motors. PPS means the same PCB can be reused across SKUs by simply re-routing peripheral maps in firmware. The 16 KB Flash holds a USB-CDC bootloader plus application code, and the industrial -40 °C to +85 °C grade covers the kitchen environment. Pricing under USD 3 at qty 1000 keeps BOM cost below the typical appliance target.
Recommended
Audio Effects and Digital Filtering
The DSPIC33FJ16GP102-I/SO is widely deployed in low-cost guitar pedals and audio effects units where its 16 MIPS engine runs biquad and comb filters in real time at 48 kHz. Single-cycle 16×16 MAC hardware makes the difference between running 4 simultaneous filters (typical pedal) versus struggling on an 8-bit MCU. I2S support via the SPI peripheral feeds external audio codecs, and 1 KB RAM covers delay-line buffers up to ~10 ms. The PPS mapper reassigns audio-frame sync and bit-clock pins to whichever GPIO is convenient on the PCB.
Recommended
Automotive Body and Lighting Modules
Automotive body controllers and LED-driving modules use the AEC-Q100-qualified DSPIC33FJ16GP102-E/SO drop-in variant of this part for -40 °C to +125 °C operation. PWM peripherals drive LED strings at 1 kHz with 16-bit resolution for smooth dimming, while UART/SPI connect to the body-CAN gateway through a separate transceiver. The 16 MIPS DSP throughput handles the running-light animations and PWM-fade algorithms without taxing the CPU. Footprint compatibility with the industrial grade enables a single PCB layout to be reused across consumer and automotive SKUs.
Recommended
IoT Edge Sensor Nodes
Battery-powered IoT sensor nodes use the DSPIC33FJ16GP102-I/SO for on-node DSP such as vibration-spectrum analysis, FFT-based audio event detection or predictive-maintenance algorithms. The 3.0–3.6 V supply draws directly from a single Li-ion cell with a small buck/boost, and Sleep/Idle modes plus selectable FRC oscillator cut average current below 100 µA. SPI connects to a low-power radio module (e.g., MRF24J40 or LoRa SX1276) while the DSP engine runs classification algorithms locally before transmit. The 16 KB Flash fits an RTOS plus radio stack plus algorithm in tight code-space.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16GP102-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16GP102T-I/SO | DSPIC33FJ16GP102-I/SP | DSPIC33FJ16GP102-E/SO | DSPIC33FJ32GP102-I/SO | DSPIC33FJ32GP102T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) wide-body | 28-SOIC (SO) wide-body | 28-SPDIP (SP) through-hole | 28-SOIC (SO) wide-body | 28-SOIC (SO) wide-body | 28-SOIC (SO) wide-body |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 32 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 2 KB |
| Core Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| 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 |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Automotive AEC-Q100) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
| AEC-Q100 Qualified | No | No | No | Yes | No | No |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Smaller and cheaper than 64-pin dsPIC33FJ cousins with same DSP throughput (vs DSPIC33FJ64GP802-I/SP)
- Peripheral Pin Select across most digital peripherals (vs PIC18F2431-I/SO)
- On-chip 16x16 MAC DSP engine (vs PIC24FJ16GA002-I/SO)
Design Notes
The DSPIC33FJ16GP102-I/SO has separate AVDD/AVSS and VDD/VSS pin pairs that MUST each be decoupled with a 100 nF ceramic plus a 10 µF bulk capacitor placed within 3 mm of the respective pins. Connect AVDD to VDD through a ferrite bead (e.g., BLM18PG221SN1) for ADC accuracy. Failure to isolate the analog supply couples switching noise into the ADC at sample times, reducing effective resolution from 12 bits to roughly 9 bits.
Place the 32.768 kHz or main crystal within 5 mm of OSC1/OSC2 and guard the traces with a ground pour to keep radiated emissions low. Route PPS remapped peripherals (UART, SPI, PWM) on inner layers if possible, since the SOIC wide-body package allows vias inside the pad envelope. Per the Microchip datasheet 70000652F, MCLR must have a 10 kΩ pull-up to VDD and a 100 nF cap to ground for in-circuit programming reliability.
Two common pitfalls: (1) forgetting to lock the PPS mapping - if a peripheral is unmapped, the I/O pin stays a digital input and the firmware appears to hang in interrupt context; (2) exceeding the 16 mA source / 12 mA sink per-pin limit when driving high-current LEDs directly - use an external MOSFET. The datasheet 70000652F states absolute maximum total VDD current at 200 mA, so a worst-case design with 8 LEDs at 16 mA each (128 mA) already leaves no margin for analog supply noise.
Compliance Information
RoHS compliant per DigiKey product listing. The standard -I/SO part is NOT AEC-Q100 qualified - select the -E/SO or -T-E/SO variant for automotive. Lead-free (Pb-free) matte-tin finish. Halogen-free status not explicitly listed in provided data.
