DSPIC33FJ12GP202-I/SP - 16-Bit DSC, 40 MIPS, 12KB Flash | Microchip
MPN: DSPIC33FJ12GP202-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $3.02 | $1,510.00 |
| 1,000 | $2.69 | $2,690.00 |
DSPIC33FJ12GP202-I/SP Overview
A Digital Signal Controller (DSC) is a hybrid between a microcontroller (MCU) and a digital signal processor (DSP), combining deterministic interrupt-driven control with single-cycle MAC (multiply-accumulate) instructions for fixed-point DSP workloads. Within the broader hierarchy, this part sits as: dsPIC33F -> dsPIC33F General Purpose family -> 16-bit DSC -> microcontroller -> embedded processor -> semiconductor. The DSP engine operates on 16-bit data with 40-bit accumulators, giving the device the numerical headroom needed for cascaded biquad filters, FFT kernels, and PID-style compensators.
Key features include 40 MHz maximum operating frequency (50 ns instruction cycle), 21 general-purpose I/O pins shared with peripheral functions, an on-chip 10-bit ADC with up to 1.1 Msps conversion rate, plus Motor-Control PWM, Input Capture, Output Compare, UART, SPI, I2C, and a 16-bit Timer module. Code security via Flash code-protect and a 16-bit wide instruction path round out the device. The 3.0 V to 3.6 V supply range and 21 I/O pins are characteristic of the GP (General Purpose) sub-family.
Architecturally, the dsPIC33FJ12GP202 uses a Harvard architecture with separate program and data paths, allowing the DSP engine to fetch data while the CPU prefetches the next instruction. This dual-pipeline design eliminates stalls in tight DSP loops and supports zero-overhead looping, which is essential for deterministic real-time control. The on-chip 10-bit ADC and dedicated PWM modules are tuned for closed-loop motor and power-conversion feedback.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) sensorless field-oriented control (FOC), switched-mode power supply (SMPS) digital control loops, sensor signal conditioning with on-chip FIR/IIR filtering, and industrial sensor-interface nodes. The 12 KB program-memory budget is well-matched to small real-time control loops without requiring external memory. Pair this DSC with a gate-driver IC and a three-phase inverter stage to build a complete low-voltage motor drive.
When designing with this part, place the 28-pin SPDIP socket on a 0.1-inch grid and provide a local 10 uF + 0.1 uF decoupling pair within 5 mm of VDD/AVDD. Use the on-chip FRC oscillator with PLL for free-running 40 MIPS operation, or attach an external 8 MHz crystal for precision timing in motor-control PWM modules. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ12GP202-I/SP — 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/SP (same form factor and footprint) — differing in Package, Mounting Type, Core Architecture, Operating Temperature, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ12GP202T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12MC202-I/SP
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DSPIC33FJ32GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202-E/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ06GS101-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.42 / Unit
View Datasheet →DSPIC33FJ12GP202-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC (Harvard) |
| Instruction Set | 16-bit, with DSP extensions |
| Maximum CPU Speed | 40 MIPS (50 ns instruction cycle) |
| Operating Frequency | Up to 40 MHz |
| Program Memory (Flash) | 12 KB (12K x 8) |
| Data RAM | 1 KB (1024 bytes) |
| I/O Pins | 21 |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| ADC | 10-bit, up to 1.1 Msps |
| Motor Control PWM | Yes (6 PWM outputs) |
| Communication Peripherals | UART, SPI, I2C |
| Timers | 16-bit Timer x1 |
| Package | 28-pin SPDIP (Skinny Plastic DIP) |
| Mounting Type | Through-Hole (THT) |
| RoHS Status | Compliant |
| Code Protection | Flash Code-Protect supported |
DSPIC33FJ12GP202-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input |
| Pin 2 | RA0/VREF+/AN0 — Port A bit 0 / ADC reference + / analog input 0 |
| Pin 3 | RA1/VREF-/AN1 — Port A bit 1 / ADC reference - / analog input 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 5 | RA3/AN3 — Port A bit 3 / analog input 3 |
| Pin 6 | RA4/AN4 — Port A bit 4 / analog input 4 |
| Pin 7 | RA5/AN5 — Port A bit 5 / analog input 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/RA6 — Oscillator crystal input / external clock / Port A bit 6 |
| Pin 10 | OSC2/CLKO/RA7 — Oscillator crystal output / clock output / Port A bit 7 |
| Pin 11 | RB0/AN8 — Port B bit 0 / analog input 8 |
| Pin 12 | RB1/AN9 — Port B bit 1 / analog input 9 |
| Pin 13 | RB2/AN10 — Port B bit 2 / analog input 10 |
| Pin 14 | RB3/AN11 — Port B bit 3 / analog input 11 |
| Pin 15 | RB4/AN12 — Port B bit 4 / analog input 12 |
| Pin 16 | RB5/AN13 — Port B bit 5 / analog input 13 |
| Pin 17 | RB6/PGC — Port B bit 6 / Programming Clock (ICSP) |
| Pin 18 | RB7/PGD — Port B bit 7 / Programming Data (ICSP) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Digital supply voltage (3.0 V - 3.6 V) |
| Pin 21 | RC0 — Port C bit 0 |
| Pin 22 | RC1 — Port C bit 1 |
| Pin 23 | RC2 — Port C bit 2 |
| Pin 24 | RC3 — Port C bit 3 |
| Pin 25 | RC4 — Port C bit 4 |
| Pin 26 | RC5 — Port C bit 5 |
| Pin 27 | RC6 — Port C bit 6 |
| Pin 28 | RC7 — Port C bit 7 |
Typical Applications
DSPIC33FJ12GP202-I/SP is suitable for 6 applications: Sensorless BLDC Motor Control, Switched-Mode Power Supply (SMPS) Digital Control, Industrial Sensor Signal Conditioning, Audio Effects Processing, Power Conversion Digital Control Loops, Automotive Body Electronics and HVAC.
Sensorless BLDC Motor Control
The DSPIC33FJ12GP202-I/SP is a strong fit for sensorless brushless DC motor control because its 6-output Motor-Control PWM, 10-bit 1.1 Msps ADC, and 40 MIPS DSP engine execute Back-EMF trapezoidal and sinusoidal commutation in real time. The 12 KB flash budget covers a small state-machine plus zero-cross detection routines without external memory. Place the DSC between the position-feedback network and the 3-phase gate driver (e.g., Microchip MCP8024 or IR2110); the DSP engine handles the MAC operations needed for commutation timing. Compared with a pure MCU, the integrated MAC unit eliminates the need for off-chip DSP, reducing BOM cost and PCB area. Industrial operating range -40C to +85C matches motor-drive bay environments.
Recommended
Switched-Mode Power Supply (SMPS) Digital Control
The DSPIC33FJ12GP202-I/SP fits digital SMPS control loops in sub-1 kW converters where its 10-bit ADC samples the feedback node at 1.1 Msps and the DSP engine runs voltage-mode or peak-current-mode compensators at 40 MIPS. The 12 KB flash fits a Type-II/Type-III compensator plus soft-start and OVP/UVP fault state machines. Place the DSC downstream of the current-sense amplifier and upstream of the PFC/MOSFET gate driver; the high PWM resolution improves line/load regulation vs analog UC3842-style controllers. Compared with a fixed-function analog controller, the programmable dsPIC33F allows tuning over UART/I2C without rework. The 3.3 V supply aligns with standard SMPS housekeeping rails.
Recommended
Industrial Sensor Signal Conditioning
The DSPIC33FJ12GP202-I/SP suits sensor signal conditioning nodes that need on-chip FIR or IIR filtering to remove 50/60 Hz line noise or mechanical resonance from strain-gauge, load-cell, or thermocouple signals. The 10-bit ADC samples at 1.1 Msps with 21 I/O pins available for multiplexed sensor channels and SPI/UART host links. The 12 KB flash accommodates a 16-tap FIR plus a calibration table; the DSP MAC executes the filter in single-cycle instructions, leaving headroom for housekeeping. Compared with a discrete op-amp filter chain, the digital approach trims calibration cost and adapts to sensor drift via firmware update. Industrial temperature rating fits factory-floor deployment.
Recommended
Audio Effects Processing
The DSPIC33FJ12GP202-I/SP handles digital audio effects such as reverb, chorus, equalization, and crossover filtering in low-cost guitar pedals and consumer audio gear. The 16-bit fixed-point DSP engine runs 16-tap biquad cascades and FFT-based spectral effects at 40 MIPS; the 12 KB flash fits a 4-band parametric EQ plus chorus routine for monaural pedal applications. The 10-bit ADC captures line/instrument inputs, while SPI/I2C drives external CODECs for stereo playback. Place the DSC between the input buffer and the CODEC; the DSP MAC executes per-sample biquads in microseconds. Compared with a generic MCU, the DSP engine eliminates audio glitches by sustaining deterministic interrupt latency.
Recommended
Power Conversion Digital Control Loops
The DSPIC33FJ12GP202-I/SP fits digital control loops in photovoltaic inverters, battery chargers, and telecom rectifiers where deterministic DSP execution improves transient response over analog controllers. The 6-output PWM module generates phase-shifted full-bridge or interleaved PFC waveforms, while the 10-bit ADC samples inductor current and output voltage at 1.1 Msps. The 12 KB flash accommodates MPPT, current-sharing, and fault-management firmware. Compared with a TI C2000, the Microchip dsPIC33F has a shallower learning curve and integrates Flash code-protection for secure boot. Industrial temperature grade fits outdoor enclosure use.
Recommended
Automotive Body Electronics and HVAC
The DSPIC33FJ12GP202-I/SP is suitable for non-safety automotive body modules - HVAC blend-door actuators, seat-position controllers, and LED lighting drivers - where 21 I/O pins drive multiple loads and the DSP engine executes PID position loops. The 12 KB flash fits small state machines plus NVM-stored calibration; the 10-bit ADC monitors temperature and position feedback. Although not AEC-Q100 qualified, the industrial -40C to +85C rating covers under-dash and cabin environments. Compared with a PIC16F or PIC18F, the DSP engine handles smoother PID control without software overhead, reducing actuator hunting. The 28-pin SPDIP socket simplifies field replacement.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ12GP202-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ12GP202T-I/SS | DSPIC33FJ12MC202-I/SP | DSPIC33FJ32GP202-I/SP | DSPIC33FJ12GP202-E/SP |
|---|---|---|---|---|---|
| Package | 28-pin SPDIP | 28-pin SSOP (SMD) | 28-pin SPDIP | 28-pin SPDIP | 28-pin SPDIP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 12 KB | 12 KB | 12 KB | 32 KB | 12 KB |
| Data RAM | 1 KB | 1 KB | 1 KB | 2 KB | 1 KB |
| CPU Speed | 40 MIPS (40 MHz) | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
| 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 |
| Motor Control PWM | 6 outputs | 6 outputs | 6 outputs (extended dead-band) | 6 outputs | 6 outputs |
Key Differentiators
- Integrated DSP engine with single-cycle MAC for fixed-point filtering (vs PIC24FJ64GA002)
- Industrial temperature range -40C to +85C in the same SPDIP-28 footprint (vs PIC18F2420-I/SP)
- Drop-in memory-scaled upgrade paths in identical 28-pin SPDIP (vs DSPIC33FJ12GP202-E/SP)
Design Notes
Place a 10 uF tantalum (or low-ESR ceramic) bulk decoupling capacitor and a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD and VSS pins. AVDD should also be decoupled with 10 uF + 0.1 uF if the on-chip 10-bit ADC is used. Power-on ramp should be monotonic; the POR (Power-On Reset) circuit holds the device in reset until VDD crosses the brown-out threshold (approx. 2.7 V).
Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm pull-up resistor and provide a 100 nF cap to ground for noise immunity. The ICSP programming pins (PGC/PGD) on RB6/RB7 must NOT be pulled low at power-up, otherwise the device enters programming mode. Always check the configuration bits in code to confirm the oscillator mode (FRC vs crystal) and the watchdog timer setting match the application.
Estimated: At 40 MHz full-load, the DSPIC33FJ12GP202-I/SP draws approximately 30 mA from VDD (typical). With a theta_JA of approximately 50 C/W on a 2-layer SPDIP test board, the junction temperature rise is roughly 1.5 C above ambient - well within the 85 C industrial limit. For continuous 40 MIPS motor-control duty, ensure adequate PCB copper around the VDD/VSS pins to spread the heat.
Keep the OSC1/OSC2 traces short and symmetric; route the crystal as close to the IC as possible and guard the traces with a ground pour to reduce EMI pickup. For ADC accuracy, route analog inputs (AN0-AN13) away from the PWM outputs and the switching power stage; place the AVR cap and AVSS guard ring around sensitive analog traces to minimize digital-noise coupling into the 10-bit ADC.
Compliance Information
RoHS-compliant lead-free packaging per Microchip product page. Industrial temperature grade only; AEC-Q100 automotive qualification not available for this variant. Halogen-free per Microchip environmental compliance documentation.
