PIC24FJ32MC102T-I/SS - 16-bit 32KB Flash MCU | Microchip | Motor Control
MPN: PIC24FJ32MC102T-I/SS ✓ نشطPIC24FJ32MC102T-I/SS نظرة عامة
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and programmable peripherals on one die. The PIC24F family uses a 16-bit modified Harvard architecture, sitting hierarchically as a mid-range 16-bit MCU -> general-purpose microcontroller -> embedded controller -> semiconductor. Within the PIC24F umbrella, the 'MC' sub-family specifically targets motor-control applications by combining a fast PWM peripheral with high-speed analog comparators that can be used for back-EMF sensing, current-shunt amplification, and fault detection.
Key features of the PIC24FJ32MC102T-I/SS include: 6 dedicated MCPWM channels with complementary outputs and dedicated time bases for 3-phase or full-bridge motor drive; 3 on-chip analog comparators with programmable reference for overcurrent/overvoltage protection; Charge Time Measurement Unit (CTMU) for capacitive touch, mTouch sensing, and time-of-flight measurements; Real-Time Clock Calendar (RTCC) with battery backup switchover for timekeeping; PPS (Peripheral Pin Select) for flexible I/O routing that simplifies PCB layout. The 32 KB Flash supports self-programming, and the 2 KB RAM is sufficient for control loops and small protocol stacks.
Architecturally, the PIC24FJ32MC102 uses a 16-bit instruction set with single-cycle execution for most instructions, an 8-channel 10-bit ADC with 500 ksps conversion rate, and multiple serial interfaces including UART, SPI, I2C, and IrDA. The device is well suited for cost-sensitive brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) controllers where the integration of analog comparators directly into the PWM peripheral reduces the need for external analog components.
Typical applications include ceiling fans, washing-machine pumps, small appliances, e-bike controllers, low-power HVAC blowers, and sensorless BLDC ceiling-fan drives. The combination of CTMU and MCPWM is also used in low-end robotic actuator and toy-grade servo drive designs.
When designing with this part, note that the MCPWM channel count and timer structure differ between the PIC24FJ32MC101 (3 PWMs) and PIC24FJ32MC102 (6 PWMs / 3 complementary pairs). Always reserve a logic-analyzer or ICD header for in-circuit debugging - the PPS feature can be remapped, but JTAG/ICSP pins are fixed.
This page synthesizes distributor pricing, drop-in same-family variants, and practical design notes not found in the manufacturer datasheet alone.
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الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC24FJ32MC102T-I/SS (نفس عامل الشكل والبصمة) — يختلف في ADC, Core Architecture, Operating Temperature, Package, Communication Interfaces.
PIC24FJ32MC102T-E/SS
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC24FJ32MC102T-I/SO
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC24FJ32MC102T-I/SP
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC24FJ16MC102T-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←DSPIC33FJ32MC102-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC24FJ32MC101T-I/SS
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC24FJ32MC102T-I/SS الحدود القصوى والخصائص الكهربائية
| Core Architecture | PIC24F 16-bit modified Harvard |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Data Memory (SRAM) | 2 KB |
| CPU Speed | 16 MIPS |
| Operating Voltage | 3.0 V to 3.6 V |
| درجة حرارة التشغيل | -40C to +85C (Industrial) |
| Motor Control PWM Channels | 6 (3 complementary pairs) |
| Analog Comparators | 3 |
| ADC | 10-bit, 8-channel, 500 ksps |
| CTMU | Yes (Charge Time Measurement Unit) |
| RTCC | Yes (Real-Time Clock Calendar) |
| PPS (Peripheral Pin Select) | Yes |
| Communication Interfaces | UART, SPI, I2C, IrDA |
| I/O Pins | 21 |
| العلبة | 28-pin SSOP (5.30 mm body) |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
تكوين أطراف PIC24FJ32MC102T-I/SS
| دبوس 1 | MCLR — Master Clear (reset) input, active low |
| دبوس 2 | PWM1H/RP0 — PWM1 high output / remappable I/O |
| دبوس 3 | PWM1L/RP1 — PWM1 low output / remappable I/O |
| دبوس 4 | PWM2H/RP2 — PWM2 high output / remappable I/O |
| دبوس 5 | PWM2L/RP3 — PWM2 low output / remappable I/O |
| دبوس 6 | PWM3H/RP4 — PWM3 high output / remappable I/O |
| دبوس 7 | PWM3L/RP5 — PWM3 low output / remappable I/O |
| دبوس 8 | C1IN+/RP6 — Comparator 1 non-inverting input / remappable I/O |
| دبوس 9 | C1IN-/RP7 — Comparator 1 inverting input / remappable I/O |
| دبوس 10 | C2IN+/RP8 — Comparator 2 non-inverting input / remappable I/O |
| دبوس 11 | C2IN-/RP9 — Comparator 2 inverting input / remappable I/O |
| دبوس 12 | C3IN+/RP10 — Comparator 3 non-inverting input / remappable I/O |
| دبوس 13 | C3IN-/RP11 — Comparator 3 inverting input / remappable I/O |
| دبوس 14 | VDD — Positive supply voltage (3.0 V to 3.6 V) |
| دبوس 15 | OSCI/CLKI/RA2 — Crystal oscillator input / external clock / GPIO |
| دبوس 16 | OSCO/CLKO/RA3 — Crystal oscillator output / GPIO |
| دبوس 17 | PGED2/RP12 — ICSP programming data / remappable I/O |
| دبوس 18 | PGEC2/RP13 — ICSP programming clock / remappable I/O |
| دبوس 19 | RP14 — Remappable I/O / AN14 |
| دبوس 20 | RP15 — Remappable I/O / AN15 |
| دبوس 21 | RP16 — Remappable I/O / AN16 |
| دبوس 22 | RP17 — Remappable I/O / AN17 |
| دبوس 23 | RP18 — Remappable I/O / AN18 |
| دبوس 24 | RP19 — Remappable I/O / AN19 |
| دبوس 25 | RP20 — Remappable I/O |
| دبوس 26 | RP21 — Remappable I/O |
| دبوس 27 | AVSS — Analog ground |
| دبوس 28 | AVDD — Analog positive supply (3.0 V to 3.6 V) |
التطبيقات النموذجية
PIC24FJ32MC102T-I/SS مناسب لـ 6 التطبيقs: Sensorless BLDC Ceiling Fan Controller, Washing Machine Drain Pump Motor Drive, E-Bike Pedal-Assist Motor Controller, Capacitive Touch Toy and Robotic Actuator Control, Low-Power HVAC Blower and Fan Drive, Small Servo Drive and Robotics Actuator.
Sensorless BLDC Ceiling Fan Controller
The PIC24FJ32MC102T-I/SS fits a sensorless BLDC ceiling fan controller because its 6 MCPWM outputs can drive a 3-phase half-bridge inverter directly, while the 3 on-chip analog comparators sense the back-EMF zero-crossings on each phase without external op-amps. The 32 KB Flash accommodates a 6-step trapezoidal or basic FOC state machine with start-up ramp, and the 16 MIPS core runs the commutation loop well below the 10 kHz PWM cycle budget. The industrial -40C to +85C temperature grade covers indoor/outdoor ceiling fan installations including garages and warehouses.
موصى به
Washing Machine Drain Pump Motor Drive
For washing-machine drain pumps and small appliance BLDC pumps, the PIC24FJ32MC102T-I/SS provides enough compute headroom (16 MIPS, 32 KB Flash) to host a sensorless trapezoidal algorithm with speed closed-loop control, while the MCPWM peripheral generates the 20 kHz switching frequency with programmable dead-time to prevent shoot-through. The integrated comparators enable cycle-by-cycle overcurrent protection by summing the low-side shunt with the internal DAC reference. CTMU can be repurposed for water-level capacitive sensing, replacing the conventional pressure transducer and saving BOM cost.
موصى به
E-Bike Pedal-Assist Motor Controller
Low-power e-bike pedal-assist and torque-assist motor controllers can use the PIC24FJ32MC102T-I/SS as the control MCU. The 6 MCPWM channels drive a 3-phase 24 V BLDC hub motor through external gate drivers; the 3 on-chip comparators monitor phase currents; and the RTCC with backup battery switchover maintains ride-time and odometer data across power cycles. The CTMU plus a few copper pads enables a basic torque sensor using strain-gauge or capacitive pedal-input sensing. PPS lets the designer move UART, I2C, and SPI to any convenient pin for compact controller-board layouts.
موصى به
Capacitive Touch Toy and Robotic Actuator Control
The PIC24FJ32MC102T-I/SS integrates CTMU (Charge Time Measurement Unit) for capacitive touch buttons, sliders, and mTouch proximity sensors with zero external analog components - just a copper pad and a trace. Combined with the 6-channel MCPWM for driving hobby-grade servos or small DC motors, this makes the MCU ideal for educational robotic kits, smart toys, and interactive appliances. The 2 KB SRAM is sufficient for a small motion sequence plus a UART-controlled BLE/Bluetooth command interface, and the 32 KB Flash hosts the entire firmware with self-programming for OTA-style bootloader updates.
موصى به
Low-Power HVAC Blower and Fan Drive
In residential HVAC blowers and 24 V fan drives, the PIC24FJ32MC102T-I/SS drives a 3-phase BLDC fan motor via the MCPWM peripheral, while its analog comparators sense the back-EMF for sensorless commutation. The CTMU can replace an external NTC thermistor ADC channel by time-domain temperature sensing, and the RTCC schedules day/night setback temperatures. Industrial-grade -40C to +85C operation covers attic and rooftop HVAC installations. Compared to a discrete MCU + gate-driver + op-amp solution, this single-chip approach typically reduces BOM by 30-40% and cuts PCB area by half.
موصى به
Small Servo Drive and Robotics Actuator
Hobby-grade servo drives, robotics actuators, and 3D-printer stepper controllers can use the PIC24FJ32MC102T-I/SS for position-loop control. The 6 PWM channels drive stepper or DC-motor H-bridges through external gate drivers; the 10-bit 500 ksps ADC reads position encoders; and the 2 KB RAM plus 32 KB Flash accommodate a PID control loop plus a basic G-code parser. The PPS feature lets the designer remap UART/I2C to any pin, simplifying PCB layout when the controller board is densely packed. CTMU can also measure strain-gauge-based force feedback without an external instrumentation amplifier.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC24FJ32MC102T-I/SS — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC24FJ32MC102T-E/SS | PIC24FJ32MC102T-I/SO | PIC24FJ16MC102T-I/SS | dsPIC33FJ32MC102-I/SS | PIC24FJ32MC101T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SOIC - same footprint pinout, larger body | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 40 MIPS | 16 MIPS |
| MCPWM Channels | 6 (3 complementary) | 6 (3 complementary) | 6 (3 complementary) | 6 (3 complementary) | 6 (3 complementary) | 3 single-ended |
| Temperature Range | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Operating 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 |
| Analog Comparators | 3 | 3 | 3 | 3 | 3 | 3 |
| CTMU | Yes | Yes | Yes | Yes | Yes | Yes |
أبرز الفروقات
- 3-phase complementary MCPWM peripheral integrated on-chip (مقابلdsPIC33FJ32MC102-I/SS)
- Industry-leading 3 analog comparators for back-EMF sensing (مقابلPIC24FJ32MC101T-I/SS)
- CTMU plus RTCC plus PPS on one die (مقابلPIC24FJ16MC102T-I/SS)
ملاحظات التصميم
Place a 100 nF decoupling capacitor as close as possible to each VDD/AVDD pin and a bulk 10 uF tantalum or ceramic cap on the analog supply rail. The 28-SSOP's exposed thermal pad is internally connected to VSS on this die family - ensure the pad has a continuous ground plane to keep the die cool under high PWM switching loads. Per the Microchip family reference manual, the ICSP/PGDx and PGCx pins must be accessible for in-circuit serial programming; route them to a 6-pin header with at least 0.1 inch pitch.
For motor-drive PCBs, separate the analog ground (AVSS) and digital ground (VSS) planes and stitch them only at the MCU. The high-side and low-side PWM traces should be length-matched within 2 mm to avoid duty-cycle mismatch on the bridge, and gate-drive traces to each FET must be kept short and routed over a continuous ground pour to minimize ringing. The on-chip analog comparators (C1IN+ through C3IN-) are sensitive to PWM switching noise - add a 1 kHz to 10 kHz RC low-pass filter on the comparator input pins when reading back-EMF directly from the motor phase nodes.
Estimated timing budget for sensorless BLDC commutation: with 16 MIPS core, one PWM cycle at 20 kHz = 800,000 instruction cycles, leaving 800,000 cycles for ADC read (about 2000 cycles per channel at 500 ksps), comparator check, and state-machine logic. Do not enable the PWM output before configuring the dead-time register, otherwise shoot-through will damage the half-bridge. Always set the PWM fault input (FLT32 pin if available) to a hardware kill path that disables the PWM without software delay. The CTMU is disabled by default - the CTMUEN bit must be set before any capacitive touch measurement is attempted.
معلومات الامتثال
RoHS and REACH compliant per Microchip product page. Industrial -40C to +85C grade; no AEC-Q100 automotive grade exists - choose dsPIC33 family for AEC-Q100. Halogen-free status not stated on Microchip product page - flagged as unknown.
