DSPIC33FJ12GP202-I/SO - 16-bit DSC, 40MIPS, 28-SOIC | Microchip
N.º de pieza: DSPIC33FJ12GP202-I/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.95 | $6,95 |
| 10 | $6.26 | $62,60 |
| 100 | $5.57 | $557,00 |
| 500 | $5.01 | $2.505,00 |
| 1.000 | $4.46 | $4.460,00 |
DSPIC33FJ12GP202-I/SO Descripción general
A Digital Signal Controller (DSC) is a hybrid microcontroller that combines a deterministic MCU instruction set with a dedicated DSP engine (single-cycle MAC, dual 40-bit accumulators, barrel shifter). It sits in the hierarchy: DSC -> microcontroller -> embedded processor -> semiconductor. DSCs are used where MCU bit-banging cannot meet real-time signal-processing bandwidth but a full DSP processor is overkill.
Key features include 12 KB Flash program memory, 1 KB SRAM data memory, on-chip 16-bit timers, a 10-bit ADC with up to 1 Msps, plus DSP-oriented peripherals such as a motor-control PWM module (typical for the GP2 family naming). The device operates from 3.0 V to 3.6 V, supports industrial -40C to +85C, and offers 5V-tolerant digital inputs with 4 mA sink on all I/O pins for direct interface to external logic.
The architecture is Harvard-based, with separate program and data buses, allowing simultaneous fetch of an instruction and a data operand. The DSP engine uses two 40-bit accumulators and a single-cycle 16x16-bit MAC, enabling efficient implementation of control loops, digital filters (FIR/IIR), and power-conversion math such as PID and space-vector modulation without software emulation overhead.
Typical applications include digital power conversion (SMPS, PFC, LLC), LED lighting drivers, motor control (BLDC, PMSM, sensored/sensorless), sensor signal conditioning, audio processing, and industrial automation. The part is supported by Microchip's MPLAB X IDE, MPLAB XC16 compiler, and dsPIC33 DSP library for filter, FFT, and motor-control primitives.
Designers should plan around the 28-pin SOIC budget, route VDD/VSS pairs with decoupling, and use Peripheral Pin Select to remap digital functions. For firmware migration, code is portable to dsPIC33FJ12GP201 (smaller Flash variant in the same family) and to PIC24F/H MCUs that share peripherals.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and design notes not found in the manufacturer datasheet, giving engineers an actionable buying and engineering reference in one place.
Alternativas directas para DSPIC33FJ12GP202-I/SO — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con DSPIC33FJ12GP202-I/SO (mismo factor de forma y huella) — difiere en Package, Operating Temperature, ADC, Core Architecture, Max CPU Speed.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DSPIC33FJ12GP201-I/SO
✅ Sustitución directa✓ En stock
$2.27 / unidad
Ver hoja de datos →DSPIC33FJ12GP202-E/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
DSPIC33FJ12GP202T-I/SO
✅ Sustitución directa✓ En stock
$2.78 / unidad
Ver hoja de datos →DSPIC33FJ12GP202-I/SO Valores máximos y características eléctricas
| Core Architecture | 16-bit dsPIC33F DSC (Harvard) |
| Instruction Set | 16-bit DSC (DSP + MCU) |
| Max CPU Speed | 40 MIPS (40 MHz) |
| Program Memory | 12 KB Flash |
| Data Memory (RAM) | 1 KB SRAM |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| Temperatura de funcionamiento | -40C to +85C (Industrial) |
| Encapsulado | 28-pin SOIC (SO) |
| I/O Pins | 21 programmable digital I/O |
| 5V Tolerant Inputs | Yes (all digital inputs) |
| I/O Sink Current | 4 mA per pin |
| ADC | 10-bit, up to 1 Msps |
| Timers | 16-bit timers |
| DSP Engine | Dual 40-bit accumulator, single-cycle 16x16 MAC |
| Peripheral Pin Select | Yes |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de DSPIC33FJ12GP202-I/SO
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Port A bit 0 / analog input / remappable peripheral |
| Pin 3 | RA1 — Port A bit 1 / analog input / remappable peripheral |
| Pin 4 | RA2 — Port A bit 2 / analog input / remappable peripheral |
| Pin 5 | RA3 — Port A bit 3 / analog input / remappable peripheral |
| Pin 6 | RA4 — Port A bit 4 / remappable peripheral |
| Pin 7 | VDD — Positive supply voltage (3.0-3.6 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — Crystal oscillator input / external clock input |
| Pin 10 | OSC2 — Crystal oscillator output |
| Pin 11 | RB0 — Port B bit 0 / remappable peripheral |
| Pin 12 | RB1 — Port B bit 1 / remappable peripheral |
| Pin 13 | RB2 — Port B bit 2 / remappable peripheral |
| Pin 14 | RB3 — Port B bit 3 / remappable peripheral |
| Pin 15 | RB4 — Port B bit 4 / remappable peripheral |
| Pin 16 | RB5 — Port B bit 5 / remappable peripheral / PGEDx programming |
| Pin 17 | RB6 — Port B bit 6 / remappable peripheral / PGECx programming |
| Pin 18 | RB7 — Port B bit 7 / remappable peripheral |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (3.0-3.6 V) |
| Pin 21 | RC0 — Port C bit 0 / remappable peripheral |
| Pin 22 | RC1 — Port C bit 1 / remappable peripheral |
| Pin 23 | RC2 — Port C bit 2 / remappable peripheral |
| Pin 24 | RC3 — Port C bit 3 / remappable peripheral |
| Pin 25 | RC4 — Port C bit 4 / remappable peripheral |
| Pin 26 | RC5 — Port C bit 5 / remappable peripheral |
| Pin 27 | RC6 — Port C bit 6 / remappable peripheral |
| Pin 28 | RC7 — Port C bit 7 / remappable peripheral |
Aplicaciones típicas
DSPIC33FJ12GP202-I/SO es adecuado para 6 aplicacións: Digital Power Conversion (SMPS, PFC), Motor Control (BLDC / PMSM FOC), LED Lighting Drivers, Sensor Signal Conditioning and Filtering, Industrial Automation and Control, Audio Processing and Effects.
Digital Power Conversion (SMPS, PFC)
The DSPIC33FJ12GP202-I/SO's 40 MIPS DSP engine executes digital control loops for switch-mode power supplies at switching frequencies commonly used in PFC and LLC stages. The single-cycle 16x16 MAC and dual 40-bit accumulators compute PI/PID compensators and feed-forward terms in well under one PWM period, leaving headroom for soft-start, slew-rate limiting, and housekeeping. The on-chip 10-bit ADC at up to 1 Msps samples current/voltage feedback with adequate resolution for sub-1% output regulation. The 28-SOIC footprint fits compact 50-200 W adapter and open-frame designs where board area is constrained. Compared with a generic MCU bit-banging the same loop, the DSC delivers the cycle budget without forcing a higher-clock, more-expensive part. The peripheral pin-select remapping simplifies PCB routing when the PWM and ADC channel assignments change between product variants.
Recomendado
Motor Control (BLDC / PMSM FOC)
Field-oriented control of small BLDC and PMSM motors requires real-time Park/Clarke transforms, PID current loops, and SVM modulation - tasks that fit naturally on the DSPIC33FJ12GP202-I/SO's DSP engine. The motor-control PWM module (signalled by the GP2 family naming) drives three-phase inverter half-bridges with programmable dead-time, and the ADC samples shunt currents in sync with the PWM reload. The 40 MIPS budget supports sensorless FOC via sliding-mode or BEMF observers for fans and pumps where Hall sensors are undesirable. The 21 I/O pins handle three-phase PWM, three analog current inputs, bus voltage sensing, and communication to a host MCU. Designers migrating from the GP202 to the GP201 save cost when their firmware fits; for higher-end drives, the dsPIC33FJ128MC family adds more PWM channels and 12-bit ADC.
Recomendado
LED Lighting Drivers
Smart LED drivers require constant-current regulation with dimming, color-mixing, and thermal fold-back - all closed-loop tasks well-suited to the DSPIC33FJ12GP202-I/SO. The DSP engine executes dimming curves and CIE-1931 color correction in real time, while the PWM module drives buck/boost converter FETs at audio-above switching frequencies to avoid audible noise. The 5V-tolerant inputs allow direct connection to 0-10 V analog dimmers and DALI transceivers without level shifters, simplifying the analog front end. The 21 I/O pins accommodate multiple LED string drivers, a thermal sensor input, and a communication interface to a wireless module or DMX bus. The 28-SOIC footprint enables slim linear-luminaire form factors where taller QFN or DIP packages would not fit.
Recomendado
Sensor Signal Conditioning and Filtering
Industrial sensors (load cells, strain gauges, thermocouples, flow meters) need FIR/IIR digital filtering, linearization, and scaling before the data leaves the embedded controller. The DSPIC33FJ12GP202-I/SO performs these operations in software using the DSP library's filter primitives, eliminating external analog filter stages. The 10-bit ADC digitizes the sensor at rates sufficient for audio-bandwidth vibration monitoring and low-frequency temperature/pressure loops. The DSP engine runs 50-tap FIR filters with negligible CPU overhead, and the 1 KB SRAM holds the coefficient table plus circular sample buffers. With Peripheral Pin Select, the same PCB can be reused across sensor variants that change which GPIO connects to interrupt lines or UART comms. The -40C to +85C industrial grade suits outdoor and factory-floor deployments.
Recomendado
Industrial Automation and Control
Programmable logic controllers, conveyor controllers, and small machine controllers benefit from the DSPIC33FJ12GP202-I/SO's deterministic MCU core plus DSP extensions for PID loops and signal conditioning. The 40 MIPS performance handles multiple simultaneous control loops (temperature, pressure, flow) without offloading to a host PLC. The 21 I/O pins interface to digital inputs (sensors, encoders), digital outputs (relays, contactors), and analog channels for process variables. Peripheral Pin Select allows PCB reuse across machine variants where pin assignments change. The 5V-tolerant inputs and 4 mA sink capability directly drive 24 V opto-isolated inputs via series resistors, simplifying the industrial I/O front end. RS-485 and CAN peripherals support factory-floor communication protocols out of the box.
Recomendado
Audio Processing and Effects
Low-cost audio products (intercoms, hearing aids, guitar effects, automotive chime generators) benefit from the DSPIC33FJ12GP202-I/SO's real-time biquad filters, delay lines, and dynamics processing. The DSP engine runs 4-8 biquad filters simultaneously for graphic or parametric EQ, reverb, and compression at 48 kHz sample rates. The 10-bit ADC is sufficient for voice-bandwidth audio in intercom and chime applications, while higher-end designs add an external audio codec. The 1 KB SRAM holds circular audio buffers for delay and reverb effects. The 28-SOIC package and low BOM cost make this DSC attractive for cost-sensitive consumer audio where a dedicated DSP processor is not justified. Migration to the dsPIC33FJ128GP family is straightforward when more memory is needed.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DSPIC33FJ12GP202-I/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DSPIC33FJ12GP201-I/SO | DSPIC33FJ12GP202-E/SO | DSPIC33FJ12GP202T-I/SO | DSPIC33FJ12GP202-I/SP |
|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SPDIP (through-hole) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Speed | 40 MIPS (40 MHz) | 40 MIPS (40 MHz) | 40 MIPS (40 MHz) | 40 MIPS (40 MHz) | 40 MIPS (40 MHz) |
| Data SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| I/O Pins | 21 | 21 | 21 | 21 | 21 |
| 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 |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant |
Diferenciadores clave
- 12 KB Flash vs smaller GP201 variant in same SOIC-28 footprint (frente a DSPIC33FJ12GP201-I/SO)
- Industrial -40C to +85C grade aligned with typical embedded deployment (frente a DSPIC33FJ12GP202-E/SO)
- DSP engine + MCU core in a 28-pin SOIC (frente a PIC24FJ64GA002-I/SO (non-DSC MCU))
Notas de diseño
The DSPIC33FJ12GP202-I/SO has multiple VDD/VSS pin pairs (pins 7/8 and 19/20) that must each be decoupled with a 0.1 uF ceramic capacitor placed within 5 mm of the respective pins. A bulk 10 uF tantalum or ceramic capacitor should sit near the IC supply entry point. The ADC's AVdd pin (if used separately on this family variant) requires an additional ferrite bead + 10 uF + 0.1 uF LC network to isolate analog supply noise from the switching digital core - critical when sampling low-amplitude analog signals such as shunt currents in motor control or feedback voltages in SMPS designs.
Place the 28-SOIC body with pin 1 oriented for unambiguous mechanical reference (typically pin 1 to the upper-left when reading the top-side silkscreen). Keep crystal traces (OSC1, OSC2) short and symmetric, surrounded by a ground guard trace tied to VSS at one point to prevent noise injection. Peripheral Pin Select (PPS) lets you remap digital peripherals to alternate I/O pins - use this to simplify PCB routing on mixed-signal boards where analog and digital grounds must be carefully partitioned. Keep high-speed PWM traces short and away from analog input traces to minimize capacitive coupling.
Do not assume 5V tolerance means you can power the device from 5V - VDD must still be 3.0-3.6 V. MCLR must have a pull-up resistor (typically 10 kOhm) to VDD for normal operation; floating MCLR causes unpredictable resets. When migrating between GP201 and GP202, recompile the linker script to reflect the Flash boundary differences - assembly routines that hard-code Flash page addresses will silently fail. The DSP engine's 40-bit accumulators require careful C-language type handling; accidental truncation to 16-bit int loses two bits of MAC headroom and corrupts filter math in fixed-point loops.
Estimated: at 40 MHz CPU clock and typical 25 mA active current draw, power dissipation is roughly 75 mW (3.3 V * 25 mA). With 28-SOIC thermal resistance around 70-80 C/W to still air, junction rise above ambient is approximately 5-6 C. No heatsink is required. However, in continuous high-CPU-load applications running the DSP engine and ADC simultaneously, verify by measurement rather than datasheet alone, since peripheral contribution to ICC varies with configuration.
Información de cumplimiento
RoHS compliance per Microchip product page. Industrial temperature grade only (I = -40C to +85C); not AEC-Q100 qualified - choose automotive-grade variants or different family for AEC-Q100. Halogen-free status not explicitly stated in the verified web data.
