PIC24FJ32MC102T-E/ML - 16-bit 32KB Flash Motor Control MCU | Microchip
MPN: PIC24FJ32MC102T-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.62 | $36.20 |
| 100 | $2.95 | $295.00 |
| 500 | $2.49 | $1,245.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC24FJ32MC102T-E/ML Overview
What is a PIC24F microcontroller? A PIC24F microcontroller is a 16-bit modified-Harvard RISC MCU from Microchip that sits between 8-bit PIC16/PIC18 devices and the higher-end dsPIC/PIC32 families. The PIC24FJ32MC102 specifically belongs to the motor control sub-family, integrating dedicated peripherals such as Motor Control PWM (MCPWM) modules, three on-chip comparators, a Charge Time Measurement Unit (CTMU), and a Real-Time Clock/Calendar (RTCC). It is designed for low-cost, high-performance digital motor control in compact, low-pin-count packages.
Key features include an internal oscillator with PLL, multiple communication peripherals (I2C, SPI, UART with IrDA and LIN support), and 10-bit ADC capability. The 16 MIPS performance enables field-oriented control (FOC) algorithms on small brushless DC and PMSM motors. The exposed-pad VQFN-28 package provides a low-thermal-resistance path, supporting sustained PWM switching at full motor drive loads.
Typical applications include low-voltage brushless DC (BLDC) and PMSM motor drives, sensorless and sensored fan/pump controllers, appliance and HVAC blower controls, e-bike hub motor drivers, and small industrial servo control boards. The AEC-Q100 qualification and extended temperature range make it well suited for automotive body electronics and under-hood subsystems.
When developing with this part, allocate PCB copper under the exposed pad to dissipate MCPWM switching losses. Use the PPS feature to remap peripherals to free GPIOs when adding sensors, and reserve at least three timer channels for freewheeling diode timing in active rectification stages.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical motor-control design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ32MC102T-E/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 PIC24FJ32MC102T-E/ML (same form factor and footprint) — differing in Package, ADC, Operating Temperature Range, Program Memory (Flash), I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32MC102-E/ML
✅ Drop-In✓ In Stock
$2.4 / Unit
View Datasheet →PIC24FJ16MC102T-I/ML
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC24FJ32MC102T-E/TL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA104-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ32MC102T-E/ML Maximum Ratings & Electrical Characteristics
| Core Processor | PIC24F (16-bit modified Harvard RISC) |
| Core Size | 16-bit |
| Maximum CPU Speed | 16 MIPS (32 MHz oscillator with PLL) |
| Program Memory Type | Flash |
| Program Memory Size | 32 KB (11K x 24 words) |
| Data RAM Size | 2 KB |
| General Purpose I/O | 21 pins |
| Connectivity | I2C, IrDA, LINbus, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, Motor Control PWM, CTMU, POR, PWM, WDT, 3 Comparators, RTCC |
| Package | 28-VQFN (ML, 6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Supply Voltage | 3.0 V to 3.6 V (3.3 V typical) |
| Operating Temperature Range | -40 C to +125 C (extended, 'E' suffix) |
| Oscillator Type | Internal with PLL |
| AEC-Q100 Qualification | Qualified (automotive grade) |
PIC24FJ32MC102T-E/ML Pin Configuration
| Pin 1 | RP1/RB1 — Remappable I/O pin (PPS capable) |
| Pin 2 | RP2/RB2 — Remappable I/O pin (PPS capable) |
| Pin 3 | RP3/RB3 — Remappable I/O pin (PPS capable) |
| Pin 4 | RP4/RB4 — Remappable I/O pin (PPS capable) |
| Pin 5 | VDD — Core voltage supply (3.3 V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/RA0 — Oscillator input or GPIO |
| Pin 8 | OSC2/RA1 — Oscillator output or GPIO |
| Pin 9 | RA2 — General purpose I/O |
| Pin 10 | RA3 — General purpose I/O |
| Pin 11 | RA4 — General purpose I/O |
| Pin 12 | VDDCORE — Regulated core voltage (decoupling cap) |
| Pin 13 | EP — Exposed thermal pad (pin 29) - must be soldered to grounded copper pour for thermal dissipation |
| Pin 13 | PWM1H — Motor Control PWM 1 high-side output |
| Pin 14 | PWM1L — Motor Control PWM 1 low-side output |
| Pin 15 | PWM2H — Motor Control PWM 2 high-side output |
| Pin 16 | PWM2L — Motor Control PWM 2 low-side output |
| Pin 17 | PWM3H — Motor Control PWM 3 high-side output |
| Pin 18 | PWM3L — Motor Control PWM 3 low-side output |
| Pin 19 | C1OUT — Comparator 1 output |
| Pin 20 | C2OUT — Comparator 2 output |
| Pin 21 | C3OUT — Comparator 3 output |
| Pin 22 | SDA/RP5 — I2C data or remappable I/O |
| Pin 23 | SCL/RP6 — I2C clock or remappable I/O |
| Pin 24 | UART_TX/RP7 — UART transmit or remappable I/O |
| Pin 25 | UART_RX/RP8 — UART receive or remappable I/O |
| Pin 26 | MCLR — Master clear reset (active low) |
| Pin 27 | AVDD — Analog voltage supply (3.3 V) |
| Pin 28 | AVSS — Analog ground |
Typical Applications
PIC24FJ32MC102T-E/ML is suitable for 6 applications: Brushless DC (BLDC) Motor Drive, PMSM / Field-Oriented Control (FOC) Drives, Sensorless Fan / Blower Controllers, Automotive Body Electronics & Pumps, Battery-Powered Power Tools & E-Bikes, Home Appliance Motor Control.
Brushless DC (BLDC) Motor Drive
The PIC24FJ32MC102T-E/ML's dedicated Motor Control PWM module (MCPWM) and three on-chip comparators make it a drop-in controller for small BLDC fans and pumps. Its 16 MIPS core runs trapezoidal or sinusoidal commutation algorithms with hardware dead-time generation, eliminating the need for an external gate-driver MCU. The VQFN-28 (6x6 mm) package exposes a thermal pad that sinks up to 1.5 A RMS switching losses when bonded to a grounded 1 oz copper pour, and the AEC-Q100 qualification supports under-hood automotive deployments.
Recommended
PMSM / Field-Oriented Control (FOC) Drives
For PMSM and FOC applications, the PIC24FJ32MC102T-E/ML delivers 16 MIPS with hardware PWM that handles 3-phase center-aligned switching at up to 20 kHz. The CTMU measures shunt current and back-EMF timing without extra analog ICs. Designers pair the part with an external three-phase gate driver (e.g., Microchip MCP8026) and use the 21 GPIOs with Peripheral Pin Select (PPS) to remap encoder QEI inputs across any unused pin, supporting flexibly-routed hardware in tightly-packed motor-control boards.
Recommended
Sensorless Fan / Blower Controllers
The PIC24FJ32MC102T-E/ML's comparator-based back-EMF zero-cross detection enables reliable sensorless commutation in 12 V fan and blower designs. The 32 KB Flash stores LUT-based commutation tables and supports closed-loop PI speed control via the RTCC module. AEC-Q100 and -40 C to +125 C operation allow direct use in HVAC blowers, cold-storage fans, and outdoor pump controllers without thermal derating.
Recommended
Automotive Body Electronics & Pumps
Automotive water pumps, oil pumps, and HVAC actuators use the PIC24FJ32MC102T-E/ML as a single-chip solution: AEC-Q100 qualification, LINbus connectivity, and on-chip comparators for current limiting. The 16 MIPS core handles LIN 2.1 protocol stacks via the UART-with-LIN peripheral, while the MCPWM drives the 3-phase FET bridge. Operating from -40 C to +125 C, the part meets under-hood environmental requirements without external temperature compensation.
Recommended
Battery-Powered Power Tools & E-Bikes
Portable brushless power tools and e-bike hub controllers benefit from the PIC24FJ32MC102T-E/ML's low BOM count - on-chip MCPWM, CTMU, and LIN/SPI all remove external ICs. The 2 KB data RAM supports current/torque control loops with a 1 kHz update rate, and the VQFN-28 package fits inside compact handle housings. Battery current sensing is implemented via the on-chip comparators with programmable hysteresis, eliminating dedicated op-amps.
Recommended
Home Appliance Motor Control
Washing-machine drum motors, dishwasher circulation pumps, and refrigerator compressors deploy the PIC24FJ32MC102T-E/ML as a cost-optimized controller. The combination of 32 KB Flash (custom wash-cycle firmware), MCPWM (variable-speed compressor drive), and RTCC (delayed-start timers) reduces external component count. UART/I2C connectivity enables touch-panel communication and the extended temperature range supports unventilated appliance cabinets.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32MC102T-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32MC102-E/ML | PIC24FJ16MC102T-I/ML | PIC24FJ32MC102T-E/TL | PIC24FJ32GA104-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-VQFN (ML, 6x6) | 28-VQFN (ML, 6x6) - same | 28-VQFN (ML, 6x6) - same | 28-VQFN (ML, 6x6) - same | 28-VQFN (ML, 6x6) - same |
| Program Memory | 32 KB Flash | 32 KB Flash | 16 KB Flash (-50%) | 32 KB Flash | 32 KB Flash |
| Data RAM | 2 KB | 2 KB | 1 KB (-50%) | 2 KB | 2 KB |
| CPU Speed | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| Motor Control PWM | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) | No (general-purpose) |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C |
Key Differentiators
- Dedicated Motor Control PWM (MCPWM) with hardware dead-time (vs PIC24FJ32GA104-I/ML)
- AEC-Q100 automotive qualification in VQFN-28 (vs PIC24FJ32GA104-I/ML)
- Three on-chip comparators for back-EMF sensing (vs PIC24FJ16MC102T-I/ML)
Design Notes
Estimated: at 32 MHz operation with MCPWM driving a 3-phase FET bridge at 20 kHz, the PIC24FJ32MC102T-E/ML dissipates ~150 mW. The VQFN-28 (ML) package has a theta_JA around 28 C/W on a 4-layer 1 oz copper PCB, giving a junction rise of ~4.2 C above ambient - acceptable for the full -40 C to +125 C range. Always solder the exposed pad (pin 29) to a contiguous 25 mm² copper pour stitched with at least 8 thermal vias to the inner ground plane for sustained motor drive duty cycles.
Place a 100 nF 0402 ceramic decoupling capacitor within 5 mm of the VDD pin and a second 100 nF cap at AVSS/AVDD. Add a bulk 4.7 uF tantalum or 10 uF ceramic on VDD. Keep the crystal traces (if used) under 5 mm and surround the OSC1/OSC2 lines with a grounded copper pour to prevent MCPWM switching noise from coupling into the clock reference.
Do not float the MCLR pin - it must be pulled high through a 10 kohm resistor to VDD for normal operation; leaving it floating causes spurious resets when MCPWM switching creates ground bounce. The Peripheral Pin Select (PPS) feature must be unlocked by writing a specific sequence to OSCCON before remapping; firmware that skips this sequence will silently fail to map peripherals. When migrating firmware from PIC24FJ32MC101 to the 102 variant, verify the higher-pin-count peripherals are correctly initialized.
Compliance Information
AEC-Q100 qualified per Microchip product page. RoHS and REACH compliant. Automotive grade 'E' suffix supports -40 C to +125 C operating range.
