PIC24FJ32MC102-I/TL - 16-Bit MCU, 32KB Flash, 36-VTLA | Microchip
MPN: PIC24FJ32MC102-I/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.05 | $3.05 |
| 10 | $2.78 | $27.80 |
| 100 | $2.32 | $232.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC24FJ32MC102-I/TL Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals to embed control logic inside a product. The PIC24F family uses a 16-bit modified Harvard architecture with 24-bit instructions, optimized for deterministic real-time control. It sits in Microchip's lineup between the 8-bit PIC16/PIC18 and the 16-bit dsPIC33/DSPic digital-signal controllers, and is targeted at cost-sensitive motor-control and mixed-signal applications where 8-bit performance is insufficient but full DSP capability is not required.
Key features include an 8-channel 10-bit Analog-to-Digital Converter (ADC) for sensor feedback, three on-chip analog comparators, a Charge Time Measurement Unit (CTMU) for capacitive touch or temperature measurement, a Real-Time Clock and Calendar (RTCC), and Peripheral Pin Select (PPS) that allows digital peripheral routing to most I/O pins. Brown-out Reset (BOR), Watchdog Timer (WDT), and Power-on Reset (POR) ensure robust operation in electrically noisy motor environments.
The device uses a 2.0-3.6V core supply with on-chip 1.8V regulator and supports industrial -40C to +85C operation. PPS-based I/O mapping dramatically simplifies PCB routing when MCPWM channels, UART, and SPI/I2C share pins. The 36-pin VTLA package (5x5 mm) is Microchip's smallest MCPWM-capable variant and suits space-constrained BLDC and stepper drives.
Typical applications include BLDC ceiling fans, small appliance motor drives, e-bike controllers, drone ESC prototypes, and sensor hubs. The integrated 10-bit ADC and CTMU also enable closed-loop thermal sensing in HVAC and white-goods applications.
When designing, allocate an external decoupling capacitor on every VDD/AVDD pair and follow Microchip's errata for the PIC24FJ32MC101/102/104 family. For long-life or automotive designs, consider the AEC-Q100-qualified PIC24FJ32MC102 variants.
Drop-in alternatives for PIC24FJ32MC102-I/TL — 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 PIC24FJ32MC102-I/TL (same form factor and footprint) — differing in ADC, Motor Control PWM (MCPWM), Package, Timers, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32MC104-I/TL
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC24FJ16MC102-I/TL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32MC101-I/P
✅ Drop-In✓ In Stock
$1.3 / Unit
View Datasheet →PIC24FJ32MC102-I/TL Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit PIC24F (modified Harvard) |
| Family | PIC24FJ32MC |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Data RAM | 1 KB |
| Maximum CPU Speed | 16 MIPS at 32 MHz |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 36-pin VTLA (5x5 mm) |
| ADC | 8-channel, 10-bit |
| Motor Control PWM (MCPWM) | Yes (multiple output channels) |
| Analog Comparators | 3 |
| CTMU | Yes |
| RTCC | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication Peripherals | UART, SPI, I2C |
| Timers | Multiple 16-bit timers |
| Brown-out Reset (BOR) | Yes |
| Watchdog Timer (WDT) | Yes |
| Pin Count | 36 |
| Mounting Type | Surface Mount (VTLA) |
| RoHS Status | Compliant |
PIC24FJ32MC102-I/TL Pin Configuration
| Pin 1 | RP5/RB5 — Remappable I/O / Port B bit 5 |
| Pin 2 | RP6/RB6 — Remappable I/O / Port B bit 6 |
| Pin 3 | RP7/RB7 — Remappable I/O / Port B bit 7 |
| Pin 4 | RP8/RB8 — Remappable I/O / Port B bit 8 |
| Pin 5 | RP9/RB9 — Remappable I/O / Port B bit 9 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Digital supply (2.0-3.6V) |
| Pin 8 | RP10/RB10 — Remappable I/O / Port B bit 10 |
| Pin 9 | RP11/RB11 — Remappable I/O / Port B bit 11 |
| Pin 10 | RP12/RB12 — Remappable I/O / Port B bit 12 |
| Pin 11 | RP13/RB13 — Remappable I/O / Port B bit 13 |
| Pin 12 | RP14/RB14 — Remappable I/O / Port B bit 14 |
| Pin 13 | RP15/RB15 — Remappable I/O / Port B bit 15 |
| Pin 14 | PWM1L — PWM1 low-side output |
| Pin 15 | PWM1H — PWM1 high-side output |
| Pin 16 | PWM2L — PWM2 low-side output |
| Pin 17 | PWM2H — PWM2 high-side output |
| Pin 18 | PWM3L — PWM3 low-side output |
| Pin 19 | PWM3H — PWM3 high-side output |
| Pin 20 | FLTA1 — PWM fault input A |
| Pin 21 | VSS — Ground |
| Pin 22 | VDD — Digital supply |
| Pin 23 | AN0 — Analog input 0 / RP0 |
| Pin 24 | AN1 — Analog input 1 / RP1 |
| Pin 25 | AN2 — Analog input 2 / RP2 |
| Pin 26 | AN3 — Analog input 3 / RP3 |
| Pin 27 | AN4 — Analog input 4 / RP4 |
| Pin 28 | AN5 — Analog input 5 |
| Pin 29 | AVSS — Analog ground |
| Pin 30 | AVDD — Analog supply (2.0-3.6V) |
| Pin 31 | MCLR — Master clear (reset, active low) |
| Pin 32 | OSCI — Crystal oscillator input |
| Pin 33 | OSCO — Crystal oscillator output |
| Pin 34 | SOSCO — Secondary oscillator output (32.768 kHz) |
| Pin 35 | SOSCI — Secondary oscillator input |
| Pin 36 | VDD — Digital supply |
Typical Applications
PIC24FJ32MC102-I/TL is suitable for 6 applications: BLDC Ceiling Fan Motor Controller, Small Appliance Motor Drive (Pumps/Valves), Drone / RC Brushless ESC Prototype, HVAC Sensor Hub with Touch Keys, E-Bike / Pedelec Controller, Industrial Sensor Module / Smart Sensor.
BLDC Ceiling Fan Motor Controller
The PIC24FJ32MC102-I/TL is well-matched to BLDC ceiling fan motor controllers thanks to its integrated MCPWM module with up to six complementary outputs and dedicated fault inputs. Its 8-channel 10-bit ADC samples back-EMF at low cost without an external op-amp chain, while the 16 MIPS core runs sensorless commutation algorithms within budget headroom. The 36-pin VTLA package keeps the entire controller under 25 mm x 25 mm, fitting inside the fan hub. Power dissipation is low enough for direct battery or 24V rectifier supply, and CTMU enables capacitive touch speed-control buttons without extra ICs.
Recommended
Small Appliance Motor Drive (Pumps/Valves)
For washing-machine drain pumps, dishwasher circulation pumps, and solenoid valves, the PIC24FJ32MC102-I/TL provides deterministic PWM control at 16 MIPS with hardware dead-time generators that prevent shoot-through in H-bridges. Its 32 KB Flash stores field-oriented-control lookup tables and the 1 KB RAM holds real-time PI loop variables. The on-chip CTMU supports precise current sensing via shunt measurement, while RTCC schedules time-of-day cycles. The wide 2.0-3.6V supply range lets the MCU share a single 3.3V rail with the gate driver, simplifying the BOM.
Recommended
Drone / RC Brushless ESC Prototype
Brushless electronic speed controllers for hobbyist drones benefit from the PIC24FJ32MC102-I/TL's MCPWM with 16-bit resolution and 32 kHz switching capability. The 16 MIPS core runs sinusoidal commutation while leaving cycles for telemetry encoding and protocol decoding on the same UART. PPS lets the designer remap PWM outputs to free pins for differential signaling, avoiding PCB rework. At only 5x5 mm in VTLA, the MCU fits inside 20 A-class ESC PCBs. Field upgrades are simple via ICSP without unmounting the chip.
Recommended
HVAC Sensor Hub with Touch Keys
HVAC indoor units and thermostats need reliable user input plus multiple analog sensor readouts, both of which the PIC24FJ32MC102-I/TL covers via CTMU capacitive touch and its 8-channel 10-bit ADC. RTCC maintains time-of-day scheduling across power-line glitches, while the industrial -40C to +85C temperature rating supports unconditioned attic installations. PPS allows the touch channels, UART for the Wi-Fi module, and I2C for the temperature/humidity sensor to share pins intelligently, reducing PCB routing complexity to a single layer.
Recommended
E-Bike / Pedelec Controller
Electric bicycles require torque-controlled BLDC drive with torque and cadence sensing - a natural fit for the PIC24FJ32MC102-I/TL. The MCPWM module drives a 6-MOSFET 3-phase bridge, while the 8-channel ADC samples pedal-cadence, throttle, and battery current in parallel. CTMU measures pedal-torque via strain-gauge resistance changes. Brown-out Reset and Watchdog Timer are mandatory for outdoor/vibration environments. The 36-pin VTLA 5x5 mm package survives reflow onto miniaturized controller PCBs and leaves room for thermal vias under the exposed pad.
Recommended
Industrial Sensor Module / Smart Sensor
Industrial 4-20 mA sensor modules and IIoT edge nodes benefit from the PIC24FJ32MC102-I/TL's low power, peripheral mix, and industrial temperature rating. The 32 KB Flash runs Modbus RTU protocol stacks and basic self-calibration routines, while 1 KB RAM buffers measured data. CTMU interfaces directly with resistive bridges (load cells, RTDs) via precise current-source measurement. PPS routes the UART to either RS-485 transceivers or LoRa modules on the same PCB, easing variant SKUs. The 2.0-3.6V supply tolerates long 4-20 mA loop drops with an external LDO.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32MC102-I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32MC104-I/TL | PIC24FJ16MC102-I/TL |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-pin VTLA (5x5 mm) | 36-pin VTLA (5x5 mm) - same | 36-pin VTLA (5x5 mm) - same |
| Flash Memory | 32 KB (11K x 24) | 64 KB (22K x 24) | 16 KB (5.5K x 24) |
| RAM | 1 KB | 2 KB | 1 KB |
| CPU Speed | 16 MIPS at 32 MHz | 16 MIPS at 32 MHz | 16 MIPS at 32 MHz |
| ADC Channels | 8 x 10-bit | 8 x 10-bit | 8 x 10-bit |
| MCPWM Outputs | 6 (3 pairs) | 6 (3 pairs) | 6 (3 pairs) |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Smallest-footprint MCPWM MCU in the PIC24F family (vs PIC24FJ64MC parts in 64-pin packages)
- Integrated CTMU capacitive touch and RTCC without extra ICs (vs PIC24FJ32GA parts without motor-control focus)
- Drop-in upgrade to 64 KB Flash via PIC24FJ32MC104 (vs PIC24FJ16MC102)
Design Notes
Place a 10 uF bulk + 0.1 uF ceramic decoupling capacitor pair on every VDD pin and one on AVDD, keeping traces shorter than 5 mm. The 36-pin VTLA package has an exposed thermal pad that MUST be soldered to a copper pour stitched with thermal vias (0.3 mm drill, 1.2 mm pitch) for heat dissipation and mechanical reliability. Route PWM outputs as differential pairs with matched length to within 2 mm to avoid duty-cycle skew in three-phase bridges.
Always configure the JTAG/ICSP pins correctly before locking the device - locked PIC24FJ32MC102-I/TL parts can only be erased with MPLAB tools and a high-voltage reset sequence. When using PPS, ensure the alternate function is fully unmapped before changing pin ownership; failure to do so can cause unintended peripherals to drive pins. According to the family datasheet errata, certain ADC channels share sampling capacitors and require ordering constraints in sequential conversions.
Estimated: at 32 MHz and 3.3V the device draws approximately 15 mA active and 20 uA in sleep - battery-powered designs should leverage the deep-sleep modes with RTCC running. The on-chip 1.8V regulator requires an external 1 uF + 0.1 uF cap on the VCORE pin. Brown-out Reset should be programmed to 2.0V to ensure Flash integrity on slow-rising supplies typical in HVAC outdoor installations.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified; choose automotive-grade PIC24FJ32MC102 variants for vehicle applications.