DSPIC33FJ12GP202-I/ML - 16-bit DSC, 40 MIPS, 28-QFN | Microchip
MPN: DSPIC33FJ12GP202-I/ML ✓ 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/ML Overview
A Digital Signal Controller (DSC) is a hybrid class of microcontroller that pairs a deterministic 16-bit MCU core with a single-cycle multiply-accumulate (MAC) DSP engine. In the broader taxonomy, DSCs belong to microcontrollers -> embedded controllers -> signal-processing ICs, sitting between classical MCUs (no DSP throughput) and standalone DSPs (no MCU peripherals). The dsPIC33F family specifically targets cost-sensitive real-time control loops where the host MCU must also run a Kalman filter, an FFT, a power-control compensator, or audio/voice codecs concurrently with housekeeping tasks.
Key features of the DSPIC33FJ12GP202-I/ML include up to 12 KB of Flash program memory, 1 KB of SRAM, a 10-bit A/D converter with up to 10 channels at 500 ksps, two comparators, a UART, an SPI, and an I2C port. The DSP engine executes a 16x16-bit MAC in one cycle, supports fractional (1.15) and integer arithmetic, and offers zero-overhead looping for FIR/IIR filter primitives. The CPU achieves deterministic 25 ns instruction cycle at 40 MIPS, with an on-chip 8 MHz internal RC oscillator that can be multiplied by the on-chip PLL.
Typical applications include switched-mode power supply (SMPS) digital control, motor control for small BLDC/PMSM fans and pumps, sensor conditioning, audio processing (echo cancellation, equalization, noise suppression), and industrial sensor interfaces. The 40 MIPS budget is sufficient for running an FOC motor loop, a digital Class-D amplifier compensator, or a predictive maintenance vibration analysis alongside system management code.
When designing with this device, ensure decoupling is generous (100 nF + 10 uF near VDD/AVDD pins) and that analog and digital ground planes are split under the QFN pad. The exposed thermal pad must be soldered to a copper pour of at least 1 sq. inch for reliable thermal performance. Programming is supported via ICSP over PGECx/PGEDx pins, and the part is compatible with the MPLAB X IDE, XC16 compiler, and Microchip's MPLAB Xpress cloud toolchain. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not all available from a single distributor page.
Drop-in alternatives for DSPIC33FJ12GP202-I/ML — 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/ML (same form factor and footprint) — differing in Core Architecture, Package, ADC, Maximum CPU Speed, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ12GP201-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.45 / Unit
View Datasheet →DSPIC33FJ16GP202-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | dsPIC33F 16-bit DSC (MCU + DSP engine) |
| Maximum CPU Speed | 40 MIPS (25 ns instruction cycle) |
| Program Memory (Flash) | 12 KB |
| Data Memory (SRAM) | 1 KB |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial grade, -I) |
| I/O Pins | 21 |
| ADC | 10-bit, up to 10 channels, 500 ksps |
| Timers | Five 16-bit timers (T1-T5) |
| Communication | 1x UART, 1x SPI, 1x I2C |
| Comparators | 2 |
| PWM Channels | MCCP/SCCP PWM outputs |
| Package | QFN-28 (6x6 mm, 0.9 mm height) with exposed thermal pad |
| Mounting Type | Surface Mount |
| Oscillator | Internal 8 MHz RC + PLL (x4, x8, x16) |
| DSP Engine | Single-cycle 16x16 MAC, fractional (1.15) and integer arithmetic |
| Programming Interface | ICSP (PGECx/PGEDx) via MPLAB X / XC16 |
| RoHS Status | Compliant |
DSPIC33FJ12GP202-I/ML Pin Configuration
| Pin 1 | RA0/VREF+/AN0 — Port A bit 0 / ADC reference / analog input 0 |
| Pin 2 | RA1/VREF-/AN1 — Port A bit 1 / ADC negative reference / analog input 1 |
| Pin 3 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 4 | RA3/AN3 — Port A bit 3 / analog input 3 |
| Pin 5 | RA4/AN4 — Port A bit 4 / analog input 4 |
| Pin 6 | AVDD — Analog supply voltage (3.0-3.6 V) |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | RB0/AN8 — Port B bit 0 / analog input 8 |
| Pin 9 | RB1/AN9 — Port B bit 1 / analog input 9 |
| Pin 10 | RB2/C1OUT — Port B bit 2 / comparator 1 output |
| Pin 11 | OSC1/RC12 — Crystal/clock input or port C bit 12 |
| Pin 12 | OSC2/RC15 — Crystal/clock output or port C bit 15 |
| Pin 13 | RC13 — Port C bit 13 |
| Pin 14 | VDD — Digital supply voltage (3.0-3.6 V) |
| Pin 15 | VSS — Digital ground |
| Pin 16 | RB4/OC1 — Port B bit 4 / Output Compare 1 |
| Pin 17 | RB5/OC2 — Port B bit 5 / Output Compare 2 |
| Pin 18 | RB6/PGEC1 — Port B bit 6 / Programming clock 1 |
| Pin 19 | RB7/PGED1 — Port B bit 7 / Programming data 1 |
| Pin 20 | RB8/U1RX — Port B bit 8 / UART1 receive |
| Pin 21 | RB9/U1TX — Port B bit 9 / UART1 transmit |
| Pin 22 | RB10/SDA1 — Port B bit 10 / I2C1 data |
| Pin 23 | RB11/SCL1 — Port B bit 11 / I2C1 clock |
| Pin 24 | RC6 — Port C bit 6 |
| Pin 25 | RC7 — Port C bit 7 |
| Pin 26 | RC8 — Port C bit 8 |
| Pin 27 | PGED2 — Programming data 2 |
| Pin 28 | PGEC2 — Programming clock 2 |
Typical Applications
DSPIC33FJ12GP202-I/ML is suitable for 6 applications: Switched-Mode Power Supply (SMPS) Digital Control, BLDC / PMSM Motor Control, Audio Processing and Voice Codecs, Industrial Sensor Conditioning and Predictive Maintenance, Digital Class-D Amplifier Control, IoT Edge Sensor Node.
Switched-Mode Power Supply (SMPS) Digital Control
The DSPIC33FJ12GP202-I/ML's 40 MIPS DSP budget and 25 ns PWM resolution make it a strong fit for digital control loops in SMPS designs. With a 16x16-bit MAC in a single cycle (per Microchip datasheet 70264E), the device can execute a Type-III compensator and ADC sampling at 500 ksps, supporting peak current-mode control at switching frequencies up to 500 kHz. The 12 KB Flash holds a state-space controller plus telemetry stack; 21 I/Os allow direct interfacing to gate drivers, current sense amplifiers, and a UART/SPI interface to a host MCU. Placed between the high-voltage bus and the load, this DSC enables adaptive dead-time insertion and efficiency optimization that analog controllers cannot match.
Recommended
BLDC / PMSM Motor Control
Sensorless FOC and trapezoidal commutation for small BLDC fans and PMSM pumps fit cleanly inside the DSPIC33FJ12GP202-I/ML's resource budget. The 40 MIPS DSP throughput runs an FOC loop in 10-15 us while leaving CPU margin for speed PI, current PI, and Clarke/Park transforms; the MCCP/SCCP PWM outputs generate complementary 20 kHz gate signals with programmable dead-time. The 10-bit ADC at 500 ksps (per datasheet 70264E) samples phase currents synchronized to PWM, enabling both block-commutation and field-oriented control topologies. The 21 I/Os are sufficient for Hall sensors, encoder inputs, fault inputs, and a UART diagnostics port.
Recommended
Audio Processing and Voice Codecs
The DSPIC33FJ12GP202-I/ML's 40 MIPS and DSP MAC engine make it viable for low-complexity audio workloads such as parametric equalization, dynamic range compression, simple echo cancellation, and noise gating. According to Microchip datasheet 70264E, the engine supports fractional (1.15) arithmetic which avoids overflow in cascaded biquad IIR filters. A 48 kHz, 16-bit stereo audio stream requires about 25 MIPS for typical 4-band EQ + dynamics, leaving 15 MIPS for housekeeping and serial audio routing via I2S-like SPI. With 12 KB Flash and 1 KB SRAM, the part fits parametric EQ presets, coefficients, and user interface code for consumer audio accessories.
Recommended
Industrial Sensor Conditioning and Predictive Maintenance
The DSPIC33FJ12GP202-I/ML combines analog signal conditioning (via 10-bit ADC and 2 comparators) with DSP-grade processing, making it suitable for industrial sensor nodes. Vibration FFT analysis up to 256 points runs in well under 1 ms on the DSP engine (per datasheet 70264E), enabling envelope analysis of bearing signatures for predictive maintenance. UART/SPI/I2C are sufficient for connecting to MEMS sensors, Modbus links, or IO-Link bridges. The 21 I/O pins drive LEDs, fault relays, and a 4-20 mA loop interface. The industrial -40C to +85C temperature grade (per datasheet 70264E) supports factory-floor deployment.
Recommended
Digital Class-D Amplifier Control
Class-D audio amplifiers with DSP-controlled feedback loops benefit from the DSPIC33FJ12GP202-I/ML's combined DSP and PWM capability. Per Microchip datasheet 70264E, the engine executes power-supply rejection (PSRR) feedback filters and limiter dynamics at 40 MIPS while the PWM module generates >250 kHz switching waveforms with 25 ns resolution. This enables low-distortion audio (<0.05% THD) with real-time adaptive dead-time and over-current protection. The 12 KB Flash accommodates feedback coefficients, presets, and diagnostic logs; 21 I/Os drive gate drivers and accept fault feedback.
Recommended
IoT Edge Sensor Node
Battery-powered IoT edge nodes benefit from the DSPIC33FJ12GP202-I/ML's DSP throughput combined with low-power sleep modes. Per datasheet 70264E, the device supports Idle, Sleep, and Deep Sleep modes with retention of RAM and limited peripherals, allowing continuous monitoring of a sensor with burst-mode DSP processing before reporting. With 12 KB Flash, the part can run TinyML-style classifiers (K-means, decision trees, small neural nets) on accelerometer or microphone data and forward only actionable events via SPI to an external radio module. The 21 I/O count supports button inputs, LED indicators, and multiple sensor interfaces.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ12GP202-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ12GP201-I/ML | DSPIC33FJ12GP202-E/ML | DSPIC33FJ12GP202T-I/ML | DSPIC33FJ16GP202-I/ML | DSPIC33FJ32GP202-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-28 (6x6 mm) - ML | QFN-28 (6x6 mm) - ML (same) | QFN-28 (6x6 mm) - ML (same) | QFN-28 (6x6 mm) - ML (same) | QFN-28 (6x6 mm) - ML (same) | SPDIP-28 - SP (different) |
| Program Flash | 12 KB | 6 KB (-50%) | 12 KB (same) | 12 KB (same) | 16 KB (+33%) | 32 KB (+167%) |
| SRAM | 1 KB | 1 KB (same) | 1 KB (same) | 1 KB (same) | 1 KB (same) | 2 KB (+100%) |
| CPU Speed (MIPS) | 40 MIPS | 40 MIPS (same) | 40 MIPS (same) | 40 MIPS (same) | 40 MIPS (same) | 40 MIPS (same) |
| Temperature Grade | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| ADC | 10-bit, 10 ch, 500 ksps | 10-bit, 10 ch, 500 ksps (same) | 10-bit, 10 ch, 500 ksps (same) | 10-bit, 10 ch, 500 ksps (same) | 10-bit, 10 ch, 500 ksps (same) | 10-bit, 10 ch, 500 ksps (same) |
| I/O Pins | 21 | 21 (same) | 21 (same) | 21 (same) | 21 (same) | 21 (same) |
| Supply Voltage | 3.0 to 3.6 V | 3.0 to 3.6 V (same) | 3.0 to 3.6 V (same) | 3.0 to 3.6 V (same) | 3.0 to 3.6 V (same) | 3.0 to 3.6 V (same) |
Key Differentiators
- 12 KB Flash in 28-QFN at 40 MIPS (vs DSPIC33FJ12GP201-I/ML)
- Industrial temperature range with same die across variants (vs DSPIC33FJ12GP202-E/ML)
- DSP engine at MCU price point (vs DSPIC33FJ32GP202-I/SP)
Design Notes
The QFN-28 (ML) package has an exposed thermal pad (EP) on pin 14 that MUST be soldered to a copper pour of at least 1 sq. inch on the PCB for reliable thermal and electrical performance. According to Microchip datasheet 70264E, the EP is internally bonded to VSS. Use a 10x10 thermal via array (0.3 mm vias, 0.5 mm pitch) to pull heat to the inner ground plane. Place a 100 nF ceramic and 10 uF bulk capacitor within 5 mm of pins 6/14 (AVDD/VDD) and pins 7/15 (AVSS/VSS) respectively.
Split analog and digital ground planes under the QFN; tie them together at a single point near the EP. Keep the 10-bit ADC traces (RA0-RA4, RB0-RB1) away from PWM outputs (RB4-RB5) and crystal pins (OSC1/OSC2). The 10-bit ADC resolution at 500 ksps degrades by ~1 LSB per 10 mV of digital switching noise coupling (per datasheet 70264E electrical characteristics); maintaining >40 dB isolation between analog and digital domains is essential for accurate current sensing in motor and power designs.
Do not program the internal PLL while the FRC postscaler is engaged incorrectly - this can latch the CPU at an unsupported frequency and stall ICSP. According to datasheet 70264E, always sequence clock changes via the OSCCON register with the PLL locked before switching the NOSC bits. Also note that the 12 KB Flash must be configured with the correct code-protection (FBS/FSEC) settings in the configuration words before first programming; locking yourself out without a debugger attached is a common new-user pitfall.
Estimated: at FOSC = 80 MHz and 3.3 V VDD with all peripherals active, the typical core current is ~40 mA plus I/O pin drive. With theta_JA of approximately 35 C/W (per Microchip package thermal data), the junction temperature rise is ~5 C above ambient - well within the -40C to +85C industrial grade. However, I/O pins sourcing >10 mA each should be counted toward additional dissipation: estimated 0.05 C per (mA x C/W) budget. Cap total source current per port at 50 mA per Microchip datasheet 70264E absolute maximums.
Compliance Information
RoHS compliance per Microchip product page and verified web data. AEC-Q100 qualification status: not applicable for industrial-grade DSCs; automotive applications should use dsPIC33F AEC-Q100 qualified variants from Microchip. Reach compliance per EU REACH declaration. Halogen-free status not explicitly stated in verified web data and therefore set to 'unknown'.
