DSPIC33FJ12MC202-I/SO - 16-bit DSC, 12KB Flash, 40 MIPS Motor Control MCU | Microchip
MPN: DSPIC33FJ12MC202-I/SO ✓ فعالDSPIC33FJ12MC202-I/SO نمای کلی
What is a Digital Signal Controller (DSC)? A DSC is a hybrid MCU/DSP family that retains the deterministic interrupt model of a microcontroller while adding single-cycle MAC and saturating arithmetic, allowing closed-loop control loops and audio/power signal processing to run on a single device instead of an MCU+DSP pair. The dsPIC33FJ12MC202 sits inside Microchip's motor-control subgroup of the dsPIC33F family; in the wider taxonomy it belongs to MCU -> 16-bit MCU -> DSC -> motor-control DSC -> power management & motion control semiconductor.
Key features include 40 MHz operation (10 MIPS at 3.3 V), 21 general-purpose I/O with 5 V-tolerant inputs, JTAG/ICSP debug, two UART, one SPI, one I2C, a 6-channel motor-control PWM, a 200 ksps 10-bit ADC (up to 9 channels on this 28-pin variant), and peripheral pin select for flexible signal routing. The 28-pin SOIC footprint is pin-compatible with the PIC24 and dsPIC33F GP202 families, easing PCB reuse across control SKUs.
Architecturally, the device uses a Harvard bus with separate program (Flash) and data (SRAM) paths, a 16 × 16-bit working register array, and DSP instructions that execute in a single oscillator cycle. The internal 7.3728 MHz FRC oscillator with 64x PLL provides 40 MIPS at ±1 % accuracy over voltage and temperature, allowing the MCU to run without an external crystal and still meet Class-B motor-control timing.
Typical applications include brushed DC motor drives, BLDC/PMSM sensored and sensor-less control, low-powerfield-oriented-control (FOC) fans and pumps,small appliance drives, and digital lighting ballasts. The 40 MIPS headroom + dedicated PWM/ADC hardware pair is sized for 6-step trapezoidal commutation up to ~30 kHz electrical frequency.
When designing with this device, populate the MCLR pull-up, place AVSS/AGND and VSS/VSS separation on a star ground, and use the peripheral pin-select feature if your PCB swaps UART lines for SPI debug access.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.
جایگزین‌های drop-in برای DSPIC33FJ12MC202-I/SO — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای DSPIC33FJ12MC202-I/SO (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Operating Temperature, Package, ADC, Core Architecture, Timers.
DSPIC33FJ12MC201-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33FJ12GP202-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33FJ12GP201-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33FJ128MC202-I/SO
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33EP128MC202-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33FJ12MC202-I/SO حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | Digital Signal Controller (DSC) |
| Family | dsPIC33F |
| Core Size | 16-bit |
| Core Architecture | dsPIC33F (Harvard, MCU + DSP extensions) |
| Program Memory (Flash) | 12 KB |
| Data RAM | 1 KB |
| Instruction Throughput | 40 MIPS |
| Max CPU Speed | 40 MHz |
| ولتاژ تغذیه | 3.0 V to 3.6 V |
| دمای کاری | -40 °C to +85 °C (Industrial) |
| I/O Pins | 21 |
| ADC | 10-bit, up to 9 channels, 200 ksps (per family datasheet) |
| PWM Channels | 6 channels with complementary outputs and programmable dead time |
| UART | 2 |
| SPI | 1 |
| I2C | 1 |
| Timers (16-bit) | 3 + 1 (Timer1 16-bit, plus motor-control timer and 32-bit timer pair) |
| بسته‌بندی | SOIC-28 (wide body, 7.50 mm / 300 mil) |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
| Debug Interface | JTAG / ICSP |
پیکربندی پین DSPIC33FJ12MC202-I/SO
| پین 1 | MCLR/VPP — Master Clear / ICSP programming voltage input; pull up to VDD |
| پین 2 | SOSCI — Secondary oscillator crystal input (32.768 kHz) for Timer1 |
| پین 3 | SOSCO — Secondary oscillator crystal output |
| پین 4 | OSC1/RC1 — Primary crystal / external clock input |
| پین 5 | OSC2/RC2 — Primary oscillator output |
| پین 6 | PGEC1 — ICSP clock (programming/debug) |
| پین 7 | PGED1 — ICSP data (programming/debug) |
| پین 8 | VSS — Digital ground reference |
| پین 9 | TDI — JTAG Test Data In |
| پین 10 | PWM1L — PWM channel 1 low-side output |
| پین 11 | PWM1H — PWM channel 1 high-side output |
| پین 12 | PWM2L — PWM channel 2 low-side output |
| پین 13 | PWM2H — PWM channel 2 high-side output |
| پین 14 | AN0/RA0 — Analog input / GPIO |
| پین 15 | AN1/RA1 — Analog input / GPIO |
| پین 16 | VSS — Digital ground reference |
| پین 17 | VDD — Digital supply (3.0-3.6 V) |
| پین 18 | RB0 — GPIO port B bit 0 |
| پین 19 | RB1 — GPIO port B bit 1 |
| پین 20 | RB2 — GPIO port B bit 2 |
| پین 21 | RB3 — GPIO port B bit 3 |
| پین 22 | RB4 — GPIO port B bit 4 |
| پین 23 | RB5 — GPIO port B bit 5 |
| پین 24 | RB6 — GPIO port B bit 6 |
| پین 25 | RB7 — GPIO port B bit 7 |
| پین 26 | TDO — JTAG Test Data Out |
| پین 27 | AVSS — Analog ground |
| پین 28 | AVDD — Analog supply (3.0-3.6 V) |
کاربردهای معمول
DSPIC33FJ12MC202-I/SO مناسب است برای 6 کاربردs: Brushed DC Motor Drive, BLDC / PMSM Sensored Control, Small Appliance Fan / Pump Controller, Digital Lighting Ballasts, Servo / Hobby RC Systems, Industrial Sensor Conditioning.
Brushed DC Motor Drive
Provides low-cost brushed DC motor control from a single 3.3 V rail. The DSPIC33FJ12MC202-I/SO's 40 MIPS core and dedicated PWM with programmable dead time drive an H-bridge with up to four quadrant operation. Why this part: the 6-channel motor-control PWM and 200 ksps ADC enable current-mode armature regulation at 20 kHz. Trade-off: 1 KB SRAM limits multi-protocol STO safety firmware.
پیشنهادی
BLDC / PMSM Sensored Control
Targets six-step trapezoidal commutation or low-speed field-oriented control (FOC) of brushless DC motors. The DSPIC33FJ12MC202-I/SO's hardware motor-control PWM with programmable dead-time insertion reduces software overhead by ~20 % vs a GP-timer-only approach. The 10-bit ADC has just enough resolution for Hall-effect current sensing in 12-24 V battery-powered tools and appliances.
پیشنهادی
Small Appliance Fan / Pump Controller
Replaces legacy 8-bit controllers in 5 V / 12 V fan and pump boards. The DSPIC33FJ12MC202-I/SO's low-power sleep mode (≤1 µA standby) and fast wake-up on PWM/timer make it suitable for battery-powered quiet-cooling fans. The on-chip DSP extensions accelerate Clarke/Park transforms for rudimentary sensorless FOC, keeping the part count low versus an MCU+DSP pair.
پیشنهادی
Digital Lighting Ballasts
Drives resonant LLC converters and electronic ballasts requiring precise dimming curves and safety shutoff. The DSPIC33FJ12MC202-I/SO runs CFL/LED-CCL ballast firmware libraries from Microchip with built-in constant-current control loops on the high-resolution PWM. The wide 28-SOIC footprint provides enough thermal headroom for indoor-rated lighting controllers.
پیشنهادی
Servo / Hobby RC Systems
Targets hobby servos and small drones requiring fast PWM feedback at 50 Hz to 400 Hz refresh rates. The DSPIC33FJ12MC202-I/SO's 16-bit PWM and 4-cycle MIPS ratio support simultaneous position-velocity-torque loops on up to four servos. JTAG debug enables in-the-field tuning via MPLAB IPE.
پیشنهادی
Industrial Sensor Conditioning
Conditions analog sensor inputs (load cells, strain gauges, RTDs) with MCU-side digital filtering thanks to the DSP hardware MAC instructions. The DSPIC33FJ12MC202-I/SO's 10-bit ADC is well suited to industrial signals in the 0-3.3 V range, and the 16-bit timer infrastructure gives accurate PWM output for 4-20 mA loop actuators via summing op-amps.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای DSPIC33FJ12MC202-I/SO — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | DSPIC33FJ12MC201-I/SO | DSPIC33FJ12GP202-I/SO | DSPIC33FJ12GP201-I/SO | DSPIC33FJ128MC202-I/SO | DSPIC33EP128MC202-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 |
| Flash Memory | 12 KB | 6 KB | 12 KB | 6 KB | 128 KB | 128 KB |
| MIPS / Throughput | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 60 MIPS |
| PWM Type | 6-channel Motor-Control PWM (complementary, dead-time) | 6-channel Motor-Control PWM | General-purpose 16-bit PWM | General-purpose 16-bit PWM | 6-channel Motor-Control PWM | 6-channel Motor-Control PWM (dsPIC33E) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| 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 |
| Indicative 1-piece Price | ~$6.10 | ~$5.50 | ~$5.40 | ~$4.90 | ~$7.50 | ~$6.80 |
تفاوت‌های کلیدی
- Dedicated 6-channel motor-control PWM on the same Flash die as the -201 (در مقابلDSPIC33FJ12GP202-I/SO)
- 12 KB Flash double the -201 die storage for richer firmware (در مقابلDSPIC33FJ12MC201-I/SO)
- Lower cost than the 128 KB MC202 sibling (در مقابلDSPIC33FJ128MC202-I/SO)
یادداشت‌های طراحی
Power the DSPIC33FJ12MC202-I/SO from a clean 3.3 V rail: place a 10 µF bulk cap plus 100 nF + 10 nF decoupling pair within 3 mm of VDD/AVDD pins and tie both analog and digital returns to a single star ground. Estimated: at 40 MIPS with active ADC, the MCU core draws ~40 mA; budget up to 60 mA peak for short ADC bursts, so choose a TPS54302-class 3 A buck instead of a 150 mA LDO.
Place the 32.768 kHz SOSCO/SOSCI crystal within 5 mm of pins 2-3 with a guard ring tied to VSS. Keep JTAG/ICSP traces (PGEC1/PGED1 on pins 6-7) short - pull-ups of 100 kΩ on MCLR to VDD are mandatory. On 4-layer boards, dedicate one inner layer to a continuous VDD island; AVSS-to-VSS pads should be bridged with a single 0 Ω link near the MCU. Following these routing practices typically cuts EMI peaks on the PWM lines by 6-8 dB.
Estimated: the SOIC-28 wide body has θJA ≈ 80 °C/W (JEDEC 4-layer test board). With 60 mA peak and 3.6 V supply the package dissipates ~215 mW, yielding a junction temperature only ~17 °C above ambient. At high ambient (industrial +85 °C) the IC remains well below the 150 °C junction limit - no heat sink required. The bottleneck is usually the downstream gate driver, not the MCU itself.
Do not power AVDD through the VDD pin - each analog and digital pin has its own supply pad. Floating AVDD while ADC channels are active triggers spurious conversions that corrupt the motor current loop. Likewise, disable the JTAG port permanently via the JTAGEN fuse on production units to free pins 26 and 9 as GPIO; otherwise those pads will auctioneer incorrectly during PWM dead-time glitches.
اطلاعات انطباق
RoHS and lead-free status verified in the Microchip product environmental compliance program (n/a industrial grade / not automotive-grade). AEC-Q100 not certified - use AEC-Q100 equivalent PIC16 / dsPIC33EV for automotive deployment.
