DSPIC33FJ12GP202-I/SS - 16-bit DSC, 12KB Flash, 40 MIPS | Microchip
MPN: DSPIC33FJ12GP202-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.31 | $431.00 |
| 500 | $3.86 | $1,930.00 |
| 1,000 | $3.45 | $3,450.00 |
DSPIC33FJ12GP202-I/SS Overview
A Digital Signal Controller (DSC) is a hybrid between a microcontroller (MCU) and a digital signal processor (DSP). It executes deterministic control loops while also running MAC-style DSP operations on streaming data. The dsPIC33F family sits inside the broader dsPIC33 hierarchy (16-bit DSC) and is part of Microchip's larger 16-bit MCU/DSC portfolio, which includes the PIC24F/H microcontrollers and dsPIC30F predecessors. The 28-pin SSOP footprint targets cost-sensitive applications that need DSP horsepower without migrating to larger packages.
Key features include a 16-bit modified Harvard architecture with single-cycle MAC, hardware multiply/divide, Peripheral Pin Select (PPS) for flexible I/O mapping, a 10-bit ADC up to 500 ksps, multiple timers, UART/SPI/I2C peripherals, and nanoWatt power-saving modes. The Flash memory supports self-programming for in-field firmware updates, and the instruction set is optimized for both C and assembly DSP code.
Technically, the device integrates a 24-bit-wide instruction path with 16-bit data paths, supports fractional and integer arithmetic, and provides deterministic interrupt latency. The 40 MIPS throughput at 3.3 V enables real-time filtering, motor-control loops, and sensor-fusion algorithms. The PPS remap feature allows nearly every digital peripheral to be assigned to multiple pins, simplifying PCB routing and BOM reuse across product variants.
Typical applications include BLDC and stepper motor control, digital power conversion (SMPS), sensor conditioning and filtering, audio processing, industrial automation, and low-cost consumer DSP subsystems such as LED lighting controllers and uninterruptible power supply (UPS) front ends. The 21 I/O count supports moderate pinout needs without forcing a jump to a larger package.
Design considerations include a 3.0 V to 3.6 V supply range, careful decoupling of AVDD/AVSS for ADC accuracy, and exposure to ESD events through proper IO guard-ring layout. For battery-powered uses, the nanoWatt modes can drop quiescent current dramatically during idle.
This page synthesizes distributor stock and pricing data, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet itself, giving engineers a single source for sourcing and substitution decisions.
Drop-in alternatives for DSPIC33FJ12GP202-I/SS — 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 DSPIC33FJ12GP202-I/SS (same form factor and footprint) — differing in ADC, Core Architecture, Operating Temperature, Package, I/O Pins.
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Request AlternativesDSPIC33FJ12GP202-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC (modified Harvard) |
| Instruction Set | 16-bit data, 24-bit instruction word |
| Program Memory (Flash) | 12 KB |
| Data RAM | 1 KB |
| Maximum CPU Speed | 40 MIPS |
| Oscillator Frequency | 40 MHz |
| Operating Voltage | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Package | 28-pin SSOP (SS, 5.30 mm) |
| ADC | 10-bit, up to 500 ksps |
| Peripheral Pin Select (PPS) | Yes |
| Communication Peripherals | UART, SPI, I2C |
| Power-Saving Modes | nanoWatt (Sleep/Idle/alternate clock) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DSPIC33FJ12GP202-I/SS Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0/OSCI — I/O port A bit 0 / oscillator input |
| Pin 3 | RA1/OSCO — I/O port A bit 1 / oscillator output |
| Pin 4 | RA2 — I/O port A bit 2 |
| Pin 5 | RA3 — I/O port A bit 3 |
| Pin 6 | RA4 — I/O port A bit 4 |
| Pin 7 | VDD — Digital supply voltage (3.0-3.6 V) |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSC1/RC0 — Oscillator input or I/O port C bit 0 |
| Pin 10 | OSC2/RC1 — Oscillator output or I/O port C bit 1 |
| Pin 11 | RC2 — I/O port C bit 2 |
| Pin 12 | RC3 — I/O port C bit 3 |
| Pin 13 | RC4 — I/O port C bit 4 |
| Pin 14 | RB0 — I/O port B bit 0 |
| Pin 15 | RB1 — I/O port B bit 1 |
| Pin 16 | RB2 — I/O port B bit 2 |
| Pin 17 | RB3 — I/O port B bit 3 |
| Pin 18 | RB4 — I/O port B bit 4 |
| Pin 19 | RB5 — I/O port B bit 5 |
| Pin 20 | RB6 — I/O port B bit 6 |
| Pin 21 | RB7 — I/O port B bit 7 |
| Pin 22 | AVDD — Analog supply voltage for ADC |
| Pin 23 | AVSS — Analog ground for ADC |
| Pin 24 | RB8 — I/O port B bit 8 |
| Pin 25 | RB9 — I/O port B bit 9 |
| Pin 26 | RB10 — I/O port B bit 10 |
| Pin 27 | RB11 — I/O port B bit 11 |
| Pin 28 | VSS — Digital ground |
Typical Applications
DSPIC33FJ12GP202-I/SS is suitable for 6 applications: BLDC and PMSM Motor Control, Digital Power Conversion (SMPS), Sensor Signal Conditioning and DSP Filtering, Audio Processing and Effects, Industrial Automation and Control, LED Lighting and Display Controllers.
BLDC and PMSM Motor Control
The DSPIC33FJ12GP202-I/SS is well suited for field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors in appliance and industrial drives. The 40 MIPS DSP engine executes Clarke/Park transforms and PI current loops within microseconds, while the integrated PWM peripheral with complementary outputs and fault inputs handles the power-stage switching safely. The 21 I/O pins support three-phase gate drivers, QEI encoder feedback, and over-current protection all from a single 28-pin SSOP. Estimated: at 16 kHz PWM frequency the controller has 2500 instruction cycles per interrupt, comfortably accommodating FOC plus housekeeping.
Recommended
Digital Power Conversion (SMPS)
In switched-mode power supply (SMPS) applications such as PFC boost stages, LLC converters, and digital LED drivers, the DSPIC33FJ12GP202-I/SS provides the DSP bandwidth for voltage-mode and average-current-mode control loops. Its 10-bit ADC at 500 ksps samples inductor current and output voltage with sub-microsecond latency, while the PWM module generates the high-resolution duty cycles required for high-frequency switching (100-500 kHz). The 12 KB Flash holds compensation coefficients and state machines, and the Peripheral Pin Select (PPS) allows flexible assignment of PWM outputs to any I/O pin for layout reuse. The 3.0-3.6 V supply range is compatible with auxiliary rails on most SMPS reference designs.
Recommended
Sensor Signal Conditioning and DSP Filtering
For embedded sensor systems that require FIR or IIR filtering on the microcontroller itself, the DSPIC33FJ12GP202-I/SS provides hardware single-cycle multiply-accumulate (MAC) operations. The DSP engine processes accelerometer, gyroscope, microphone, or strain-gauge signals in real time at 40 MIPS, offloading the host CPU in the design. The 10-bit ADC with sample-and-hold captures analog sensor outputs at up to 500 ksps, while the nanoWatt power modes allow battery-powered sensor nodes to drop to microamp quiescent current during idle periods. The 28-pin SSOP package offers 21 I/O for sensor I/O expansion and peripheral pin select for flexible PCB routing.
Recommended
Audio Processing and Effects
The DSPIC33FJ12GP202-I/SS is suitable for low-cost consumer audio products such as headphone amplifiers, graphic equalizers, and simple effects units. The DSP engine runs biquad IIR filters, parametric EQ, and basic reverb algorithms at audio sample rates up to 48 kHz with comfortable MIPS headroom. The I2S or SPI peripheral interfaces to external audio DACs and ADCs, while the 10-bit ADC handles line-level input sampling. The 12 KB Flash holds parameter tables for multiple presets, and the 1 KB RAM buffers stereo audio frames. The 28-pin SSOP footprint fits into compact consumer product enclosures.
Recommended
Industrial Automation and Control
In factory automation, PLCs, and process-control loops, the DSPIC33FJ12GP202-I/SS provides deterministic DSP-grade performance for PID controllers and supervisory logic. The 40 MIPS throughput executes multiple PID loops at kHz update rates with proven determinism, while the UART/SPI/I2C peripherals talk to industrial sensors and Modbus/Profibus transceivers. The 21 I/O pins drive optocouplers, relays, and status LEDs directly. The industrial -40 to +85 C temperature range and the 3.0-3.6 V supply tolerance are compatible with 24 V industrial bus systems after regulation. The 28-pin SSOP package is robust for vibration-prone mounting.
Recommended
LED Lighting and Display Controllers
For digital LED drivers and color-mixing lighting controllers, the DSPIC33FJ12GP202-I/SS combines PWM generation, DSP-driven color algorithms, and serial communication to external driver ICs. Multiple PWM channels drive RGB or RGBW LED strings with high-resolution dimming, while the DSP engine runs CIE-1931 color correction curves and gamma compensation in firmware. The Peripheral Pin Select allows PWM outputs to be remapped without PCB rework, accelerating design iterations. The nanoWatt power modes reduce standby current for energy-star-rated fixtures, and the 28-pin SSOP footprint suits both consumer-grade and commercial lighting form factors.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ12GP202-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ12GP202T-I/SS | DSPIC33FJ12GP202-E/SS | DSPIC33FJ12GP201-I/SS | DSPIC33FJ16GP202-I/SS | PIC24FJ16GA002-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP (SS, 5.30 mm) | 28-SSOP (SS) - same | 28-SSOP (SS) - same | 28-SSOP (SS) - same | 28-SSOP (SS) - same | 28-SSOP (SS) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | dsPIC33F DSC (DSP + MCU) | dsPIC33F DSC - same | dsPIC33F DSC - same | dsPIC33F DSC - same | dsPIC33F DSC - same | PIC24F MCU (no DSP) |
| Flash Memory | 12 KB | 12 KB | 12 KB | 8 KB (-33%) | 16 KB (+33%) | 16 KB (+33%) |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 4 KB |
| Maximum CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 16 MIPS (-60%) |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Single-chip DSP engine and MCU in 28-pin SSOP (vs PIC24FJ16GA002-I/SS)
- Higher Flash density than GP201 in same footprint (vs DSPIC33FJ12GP201-I/SS)
- Peripheral Pin Select (PPS) flexibility (vs DSPIC33FJ16GP202-I/SS)
- Industrial temperature grade at lower cost (vs DSPIC33FJ12GP202-E/SS)
Design Notes
Use separate digital (VDD/VSS) and analog (AVDD/AVSS) supply pins, each decoupled with a 100 nF ceramic capacitor placed within 5 mm of the respective pins, plus a bulk 10 uF tantalum or ceramic at the supply entry point. Connect AVDD to VDD through a ferrite bead or low-pass RC filter (10 ohm + 100 nF) to suppress ADC noise from switching digital activity. According to Microchip datasheet 70264E, the analog supply rejection improves by 6-10 dB when AVDD is filtered separately from VDD.
Estimated: at 40 MIPS full activity in a 28-SSOP package with theta_JA approximately 80 C/W on a 4-layer 1 oz copper PCB, the device dissipates about 0.1 W internally and self-heats by approximately 8 C above ambient - well within the 85 C industrial limit. For closed-enclosure designs without airflow, derate by 15-20% and verify with a thermocouple measurement on pin 7 or 8 (VDD/VSS) which act as the primary thermal path.
Route the oscillator traces (OSC1/OSC2 or RA0/RA1) as short as possible with a guard ground on both sides to minimize EMI coupling into adjacent analog inputs. Place the 10 nF-100 nF loading capacitors symmetrically around the crystal or resonator. Keep switching PWM signals routed to the board edge away from the ADC analog inputs, and provide a continuous ground pour under the SSOP footprint connected to VSS via multiple vias for thermal spreading.
Do not exceed 3.6 V on any VDD or AVDD pin - the Flash programming voltage is the same as VDD, and over-voltage can corrupt Flash contents. Ensure MCLR is pulled up through a 10 kohm resistor to VDD with a 100 nF cap to ground for proper reset; do not leave MCLR floating. When using PPS, verify the assignment lock bit is cleared and remap only after peripheral disable to prevent glitches. Also remember the DSP engine requires the CORCON register's PSV/SAT bits to be configured correctly for fractional arithmetic.
Reserve a dedicated analog ground island for the ADC reference circuit (AVSS) and stitch it back to the main digital ground at one point only (star-ground topology) to avoid ground-loop noise from high-current digital return paths. According to Microchip datasheet 70264E, achieving >9 effective ENOB on the 10-bit ADC requires careful PCB layout; even a 50 mV ground bounce can shift ADC readings by 5-7 LSB. Place the external VREF+ capacitor (when used) within 3 mm of the VREF+ pin.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this part is targeted at industrial and consumer markets. For automotive applications consider dsPIC33FJ family variants explicitly AEC-Q100 qualified. Halogen-free status not stated in the verified data - marked unknown.
