PIC24EP256MC202-I/MM - 70 MIPS 16-bit Motor Control MCU | Microchip
MPN: PIC24EP256MC202-I/MM ✓ פעילPIC24EP256MC202-I/MM סקירה
What is a PIC24EP motor-control MCU? The PIC24EP family is a 16-bit modified-Harvard DSC/MCU line from Microchip that combines DSP-class multiply-accumulate throughput with traditional MCU peripherals, optimized for closed-loop field-oriented control (FOC) of brushless DC, permanent-magnet synchronous, AC induction, and switched-reluctance motors. The MC-variant adds high-resolution PWM, QEI, op-amps, and comparators specifically to support multi-axis servo and variable-frequency drive designs.
Key features include a 16-bit CPU at 70 MIPS (40 MHz core with instruction-issue accelerator), four on-chip operational amplifiers configurable as PGA/gain stages for current sensing, four high-speed analog comparators with DAC reference for back-EMF or over-current protection, a 12-bit 1.1 Msps ADC with up to 16 input channels and dual-sample-and-hold, a 10-bit 1.1 Msps DAC, and a Peripheral Trigger Generator (PTG) for hardware state-machine sequencing. The device supports USB, CAN, I2C, SPI, and UART connectivity, plus a Real-Time Clock/Calendar with backup power domain.
The PIC24EP256MC202 uses a 3.0 V to 3.6 V single supply, supports an industrial temperature range of -40 °C to +85 °C, and is offered in a 28-pin QFN-S (6x6) package. The QFN exposed pad provides a low-thermal-resistance path (theta_JA approximately 30 C/W with proper PCB layout) for sustained high-current PWM switching without thermal throttling. The MM package footprint is shared across the broader PIC24EPxxMC202/GP202 28-pin family for layout reuse.
Typical applications include field-oriented control (FOC) motor drives, sensorless BLDC ceiling fans and pumps, e-bike traction controllers, robotic servo drives, drone ESCs, industrial servo amplifiers, and appliance variable-speed drives. Designers value the integrated op-amps and comparators because they eliminate external current-sense amplifiers and analog protection circuits, reducing BOM cost and PCB area for compact motor-drive modules.
When designing with this device, allocate sufficient GND copper stitching around the QFN exposed pad to keep junction temperature below 125 °C at full 70 MIPS operation. Use the Peripheral Trigger Generator to offload PWM and ADC sequencing from the CPU for deterministic loop timing. Always validate motor-control firmware against worst-case load transients using Microchip's MPLAB X IDE and dsPIC33/PIC24 peripheral libraries.
חלופות תחליף ישיר עבור PIC24EP256MC202-I/MM — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC24EP256MC202-I/MM (אותו גורם צורה וטביעת רגל) — שונים ב ADC, Package, Operating Temperature, CPU Speed, PWM Channels.
PIC24EP256MC202T-I/MM
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC24EP256MC202-E/MM
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC24EP256MC202-H/MM
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24EP128MC202T-I/MM
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC24EP256GP202T-E/MM
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24EP256MC202-I/MM דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC 16-bit modified Harvard (PIC24EP) |
| CPU Speed | 70 MIPS (40 MHz core with instruction accelerator) |
| Program Memory | 256 KB Flash (85.5K x 24 words) |
| SRAM | 32 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| מארז | QFN-S-28 (6x6 mm) with exposed thermal pad |
| סוג הרכבה | Surface Mount |
| טמפרטורת פעולה | -40 °C to +85 °C (industrial) |
| PWM Channels | 8 high-speed PWM outputs, 1.04 ns resolution |
| On-chip Operational Amplifiers | 4 configurable PGA/op-amp channels |
| Analog Comparators | 4 high-speed comparators with DAC reference |
| ADC | 12-bit, up to 16 channels, 1.1 Msps, dual-sample-and-hold |
| DAC | 10-bit, 1.1 Msps |
| Quadrature Encoder Interface (QEI) | Yes |
| Communication Interfaces | USB, CAN, I2C, SPI, UART |
| Peripheral Trigger Generator (PTG) | Yes |
| Real-Time Clock/Calendar | Yes with backup power domain |
| סטטוס RoHS | Compliant |
| רמת MSL | 3 (168 hours) |
תצורת פינים של PIC24EP256MC202-I/MM
| פין 1 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 2 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 3 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 4 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 5 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 6 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 7 | AVSS — Analog ground |
| פין 8 | GND — Digital ground |
| פין 9 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 10 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 11 | OSCI — External oscillator input or crystal |
| פין 12 | OSCO — External oscillator output or crystal |
| פין 13 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 14 | AVDD — Analog 3.3V supply |
| פין 15 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 16 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 17 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 18 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 19 | VCAP — Voltage regulator decoupling pin |
| פין 20 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 21 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 22 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 23 | PGED3 — ICD programming/debug data |
| פין 24 | PGEC3 — ICD programming/debug clock |
| פין 25 | PWM1L — PWM1 low-side output |
| פין 26 | PWM1H — PWM1 high-side output |
| פין 27 | RPn/IOC — Remappable I/O with interrupt-on-change |
| פין 28 | RPn/IOC — Remappable I/O with interrupt-on-change |
יישומים טיפוסיים
PIC24EP256MC202-I/MM מתאים עבור 7 יישוםs: Field-Oriented Control (FOC) Motor Drives, BLDC Ceiling Fans and Pumps, E-Bike Traction Controllers, Robotic Servo Drives, Drone Electronic Speed Controllers (ESCs), Industrial Variable-Frequency Drives (VFDs), Home Appliance Motor Control.
Field-Oriented Control (FOC) Motor Drives
The PIC24EP256MC202-I/MM is purpose-built for field-oriented control of 3-phase PMSM, BLDC, and AC induction motors. Its 70 MIPS throughput executes the full Clarke/Park transform, inverse Park, and SVM modulator within a 10 µs sample period. The 8-channel 1.04 ns-resolution PWM generates the precise sinewave drive required for smooth low-speed torque, while the 4 on-chip op-amps as PGAs amplify shunt-resistor voltage drops directly into the ADC without external amplifiers. Engineers use the QEI module for incremental encoder feedback in servo drives. According to Microchip application notes, FOC loop convergence on this MCU typically stabilizes within 50 ms.
מומלץ
BLDC Ceiling Fans and Pumps
The PIC24EP256MC202-I/MM drives sensorless BLDC motors in low-noise ceiling fans and water pumps. Sensorless BEMF zero-crossing detection is handled by the 4 on-chip analog comparators with DAC reference, eliminating external BEMF circuitry. The 32 KB SRAM holds running speed, soft-start ramp tables, and fault logs. The 28-pin QFN-S 6x6 mm footprint fits compact appliance control boards. Operating from 3.0 V to 3.6 V with low quiescent current, the MCU is well-suited to mains-rectified 5 V standby supplies typical in white goods.
מומלץ
E-Bike Traction Controllers
E-bike traction controllers use the PIC24EP256MC202-I/MM for closed-loop torque control of mid-drive and hub motors. The 70 MIPS core runs torque vector control, regenerative-braking logic, and pedal-assist cadence algorithms. The 256 KB Flash stores lookup tables for battery I-V curves and assist-level profiles. Hardware features like the Peripheral Trigger Generator synchronize ADC sampling with PWM center-aligned edges, eliminating ADC-PWM phase skew. The QFN exposed pad handles continuous switching losses at 250 W peak torque without thermal throttling.
מומלץ
Robotic Servo Drives
Multi-axis robotic servo drives deploy one PIC24EP256MC202-I/MM per joint for current-loop and velocity-loop control. The QEI module reads incremental encoder position at up to 10 Mcounts/s, while the 4 on-chip op-amps condition current-sense signals from inline shunt resistors. The 8-channel high-speed PWM generates the switching waveform for the H-bridge or 3-phase inverter driving each servo motor. MCU-to-MCU SPI communication between axis controllers enables centralized motion planning. The 32 KB SRAM holds trajectory buffers and PID state.
מומלץ
Drone Electronic Speed Controllers (ESCs)
Compact drone ESCs benefit from the PIC24EP256MC202-I/MM's small 6x6 mm QFN footprint and integrated analog peripherals. The MCU runs fast sinusoidal or trapezoidal commutation at 32 kHz to 48 kHz switching frequency, which keeps motor whine outside the audible band. The 4 on-chip op-amps amplify current-shunt voltages for instantaneous over-current protection, while the 4 comparators with DAC reference provide BEMF zero-crossing for sensorless commutation. UART-based DShot protocol reception runs simultaneously on the same MCU.
מומלץ
Industrial Variable-Frequency Drives (VFDs)
Industrial VFDs for pumps, fans, and conveyors use the PIC24EP256MC202-I/MM as the main control MCU. The 70 MIPS throughput executes V/Hz, sensorless vector, or full FOC motor-control algorithms. The 12-bit 1.1 Msps ADC samples multiple motor currents simultaneously via dual-sample-and-hold, while the 8 PWM channels drive the IGBT inverter stage. CAN or UART ports link to PLCs and HMIs for remote control. The -40 °C to +85 °C industrial temperature range supports deployment in factory-floor cabinets without additional cooling.
מומלץ
Home Appliance Motor Control
Washing machines, dishwashers, and refrigerators integrate the PIC24EP256MC202-I/MM to control drum motors, drain pumps, and compressor BLDCs. The MCU's on-chip op-amps handle current sensing directly, eliminating external analog front-ends and reducing BOM cost. Sensorless commutation algorithms run reliably even with fluctuating mains supply thanks to the wide 3.0 V to 3.6 V operating range. The RTCC with backup power domain enables scheduled wash-cycle programs that survive mains power interruptions.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC24EP256MC202-I/MM — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC24EP256MC202T-I/MM | PIC24EP256MC202-E/MM | PIC24EP256MC202-H/MM | PIC24EP128MC202T-I/MM | PIC24EP256GP202T-E/MM |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-S-28 (6x6 mm) | QFN-S-28 (6x6 mm) - same | QFN-S-28 (6x6 mm) - same | QFN-S-28 (6x6 mm) - same | QFN-S-28 (6x6 mm) - same | QFN-S-28 (6x6 mm) - same |
| Flash Program Memory | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| On-chip Op-amps | 4 | 4 | 4 | 4 | 4 | 0 |
| High-speed PWM | 8 channels | 8 channels | 8 channels | 8 channels | 8 channels | 0 (general-purpose PWM only) |
| QEI Module | Yes | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +150 °C (AEC-Q100) | -40 °C to +85 °C | -40 °C to +125 °C |
מבדילים עיקריים
- 4 integrated on-chip op-amps eliminating external current-sense amplifiers (לעומתPIC24EP256GP202T-E/MM)
- 8-channel high-speed PWM with 1.04 ns resolution vs GP-series general-purpose PWM (לעומתPIC24EP256GP202T-E/MM)
- 256 KB Flash with 32 KB SRAM - largest memory in the 28-pin PIC24EP family (לעומתPIC24EP128MC202T-I/MM)
- AEC-Q100 qualified variant available in same footprint (לעומתPIC24EP256MC202-I/MM (this part))
הערות תכנון
Estimated: With a 28-pin QFN-S (6x6 mm) package and theta_JA of approximately 30 C/W on a 4-layer JEDEC test board, the die dissipates up to 4 W before reaching the +125 °C junction limit at 25 °C ambient. At full 70 MIPS operation with all peripherals active, internal dissipation is typically 0.4-0.6 W, leaving ample thermal margin. Place a continuous GND copper pour directly under the exposed pad with at least 8 thermal vias to inner-layer ground planes for lowest thermal resistance.
Estimated: Place a 0.1 µF ceramic decoupling capacitor within 2 mm of each AVDD/VDD pin, with a 4.7 µF bulk capacitor at the MCU supply origin. The VCAP pin (pin 19) requires a 4.7 µF to 10 µF low-ESR ceramic capacitor (X7R, 10 V rating) to ground; do not omit this capacitor as it is required for the internal 1.8V regulator. Route high-speed PWM signals away from analog op-amp inputs to minimize coupling.
For QEI signals from an incremental encoder, route the A/B/Index signals as matched-length differential pairs with continuous ground reference. Use the on-chip QEI digital filter to suppress noise rather than relying on external RC networks. The on-chip op-amps for current sensing should be placed adjacent to the shunt resistors with Kelvin connections to minimize ground-loop errors. Follow Microchip AN1078 for EMI-optimized motor-control PCB layouts.
The PIC24EP256MC202-I/MM ADC achieves 1.1 Msps sampling rate; for optimal SNR, sample signals with source impedance below 1 kΩ and use the on-chip sample-and-hold. ADC channel-to-channel skew in dual-sample mode is 12.5 ns typical; ensure simultaneous-current sampling for FOC uses the same ADC trigger from the PWM center-aligned edge. Calibrate ADC offset in software using the internal bandgap reference at startup.
Do not apply voltages outside 3.0 V to 3.6 V on any VDD/AVDD pin or damage will result. The VCAP pin must be left as output only - never drive it externally. When migrating from PIC24FJ to PIC24EP, note that the 24EP has different configuration bit locations and a new PPS register mapping for peripheral pin select. Always verify oscillator configuration against the operating voltage before code commit.
מידע על תאימות
RoHS compliant per Microchip product page. AEC-Q100 qualified variants are PIC24EP256MC202-E/MM (Grade 2) and PIC24EP256MC202-H/MM (Grade 0). The standard PIC24EP256MC202-I/MM is not AEC-Q100 qualified.
