PIC24FJ32MC102-I/SS - 16-bit 16MIPS 32KB Flash Motor MCU | Microchip
MPN: PIC24FJ32MC102-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.61 | $26.10 |
| 100 | $2.32 | $232.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC24FJ32MC102-I/SS Overview
A 16-bit microcontroller is a class of embedded processor featuring a 16-bit data path, 16-bit registers, and instruction-fetch widths typically between 16 and 24 bits, sitting architecturally between 8-bit MCUs (PIC16, AVR) and 32-bit Cortex-M parts. The PIC24F family in particular targets low-power, mixed-signal embedded designs, combining a modified Harvard architecture with peripheral-rich silicon tuned for sensor and actuator interfaces. Within the Microchip taxonomy, PIC24FJ32MC102 belongs to the motor-control sub-family ("MC"), which adds hardware PWM, input-capture, and charge-time measurement unit (CTMU) resources used for brushless-DC (BLDC) and stepper drive loops.
Key differentiating features of the PIC24FJ32MC102-I/SS include the CTMU for capacitive-touch and time-of-flight measurement, MCPWM channels with flexible duty/period control, and PPS that allows digital peripheral mapping to nearly any I/O pin. The Flash memory is rated for endurance in typical in-application reprogramming scenarios, and the integrated 16 MIPS core enables deterministic loop execution for closed-loop control without software-cycle stretching. The 28-SSOP form factor keeps the part within low pin-count motor drive PCBs while still providing enough I/O for quadrature encoders and three-phase gate signals.
Typical application scenarios include consumer BLDC fan and pump controllers, low-voltage drone ESCs, appliance motor boards, and small-format LED drivers using the CTMU for touch input. The part is also commonly designed into HVAC damper actuators, white-goods motor subsystems, and educational/hobby robotics platforms where cost per MIPS dominates the BOM. For the highest-volume designs, the 28-SSOP outline is compatible with hand-soldering and basic pick-and-place, simplifying small-batch manufacturing.
When designing in this MCU, allocate at least one UART for debug, respect the VDD/VSS pin-connection rules from the datasheet (all VSS and VDD pins must be connected for programming), and review the dsPIC33/PIC24 Family Reference Manual sections for the specific peripheral you intend to use. Programming is supported through MPLAB Snap, PICkit, or ICD tools via ICSP.
This page combines distributor pricing, verified drop-in alternatives from the same PIC24FJ family, and design notes not aggregated in any single manufacturer document.
Drop-in alternatives for PIC24FJ32MC102-I/SS — 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/SS (same form factor and footprint) — differing in Package, Core Architecture, Program Memory (Flash), Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32MC102-E/SS
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC24FJ16MC102-I/SS
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →PIC24FJ16MC102T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.86 / Unit
View Datasheet →PIC24FJ32MC102-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.54 / Unit
View Datasheet →PIC24FJ32MC101-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32MC102-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC (modified Harvard) |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Data Memory (SRAM) | 2 KB |
| Maximum CPU Speed | 16 MIPS @ 32 MHz |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| Operating Temperature (I grade) | -40C to +85C |
| Package | 28-SSOP (0.209 inch / 5.30 mm body width) |
| Mounting Type | Surface Mount |
| Communication Interfaces | I2C, SPI, UART |
| Motor Control Peripherals | MCPWM, Input Capture, Output Compare, CTMU |
| Peripheral Pin Select (PPS) | Yes |
| Timers | Multiple 16-bit Timer/Counter modules |
| MSL Moisture Sensitivity | MSL 1 (per Microchip SSOP standard) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Lead-free, Halogen-free (Microchip standard) |
| Programming / Debug | ICSP via MPLAB Snap, PICkit, ICD |
PIC24FJ32MC102-I/SS Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 3 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 4 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 7 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 8 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 9 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 10 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 11 | VDD — Positive supply (3.0-3.6V) |
| Pin 12 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 13 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 14 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 15 | VSS — Ground reference |
| Pin 16 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 17 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 18 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 19 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 20 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 21 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 22 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 23 | VSS — Ground reference |
| Pin 24 | VDD — Positive supply (3.0-3.6V) |
| Pin 25 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 26 | PPS_I/O — PPS-mappable I/O / analog input |
| Pin 27 | ICSPDAT/PPS — ICSP data or PPS-mappable I/O |
| Pin 28 | ICSPCLK/PPS — ICSP clock or PPS-mappable I/O |
Typical Applications
PIC24FJ32MC102-I/SS is suitable for 7 applications: BLDC Fan and Pump Motor Control, Small Drone and Quadcopter ESC, Appliance Motor Drive Board, Capacitive Touch User Interface with Motor Control, Low-Voltage Stepper Motor Controller, Educational Robotics and Hobby Motor Board, LED Lighting with Touch Dimming.
BLDC Fan and Pump Motor Control
The PIC24FJ32MC102-I/SS is a strong fit for low-voltage BLDC fan and small pump motor controllers because its MCPWM channels provide the three complementary phase outputs needed for a three-phase inverter at typical 20 kHz switching frequencies. At 16 MIPS, the device has enough headroom to run a sensorless back-EMF commutation loop while servicing UART telemetry for fault reporting. The CTMU also enables capacitive touch input for user-facing fan-speed selectors without extra analog ICs. According to the Microchip datasheet document 30009997e, the 32 KB Flash holds both the bootloader and the field-oriented control (FOC) or trapezoidal commutation state machine, with 2 KB SRAM supporting the PI controller buffers.
Recommended
Small Drone and Quadcopter ESC
In hobbyist and entry-level commercial ESCs the PIC24FJ32MC102-I/SS acts as the commutation controller with the fast MCPWM driving three low-side and high-side FET gates. The 16 MIPS throughput comfortably executes a 50 kHz FOC or sinusoidal commutation loop while one UART serves the standard DShot/OneShot protocol receiver. The Peripheral Pin Select (PPS) feature allows PCB designers to remap PWM outputs to any I/O, easing layout of small 4-layer ESC boards. As of 2026-09-30, this application is well-served by the 28-SSOP outline because it occupies limited board real estate while exposing all motor-control pins.
Recommended
Appliance Motor Drive Board
White-goods designs like washing-machine drain pumps, dishwasher circulation pumps, and refrigerator fans typically rely on the PIC24FJ32MC102-I/SS as a low-cost 16-bit controller. The industrial -40C to +85C temperature grade survives under-cabinet thermal loads, and the integrated 16-bit MIPS core handles soft-start ramps, current limit, and tacho feedback without an external DSP. CTMU and input-capture modules support both capacitive control-panel buttons and Hall-sensor tacho inputs on the same board. Compared with 8-bit MCUs, the 32 KB Flash and 2 KB SRAM let engineers add application-layer diagnostics without leaving room for the motor-control state machine.
Recommended
Capacitive Touch User Interface with Motor Control
The CTMU peripheral in the PIC24FJ32MC102-I/SS provides on-chip capacitive touch measurement, removing the need for a dedicated touch controller in appliances where the same MCU also drives a small motor. A typical design uses CTMU scans on 4-6 touch pads for user input while MCPWM channels handle fan or pump commutation in the background. At 16 MIPS, both scan loops and motor-loop updates fit in the same execution budget. Industrial designers favor this single-chip solution over separate MCU plus touch controller ICs to keep BOM cost down on high-volume SKUs.
Recommended
Low-Voltage Stepper Motor Controller
The PIC24FJ32MC102-I/SS drives bipolar stepper motors up to 24V rails using its MCPWM and Output Compare channels to generate the two-phase excitation waveforms. The 16 MIPS core executes microstepping sine-table lookups at a rate that maintains smooth motion profiles even at high step rates. PPS remapping lets the PCB designer place driver outputs on adjacent pins for short, low-inductance traces to the gate driver. With 32 KB Flash, the part stores both the motion profile and the application layer (HMI, sensor conditioning) without external memory expansion.
Recommended
Educational Robotics and Hobby Motor Board
Hobby robotics kits, university mechatronics courses, and STEM product platforms use the PIC24FJ32MC102-I/SS as the brain for DC and stepper motor control because it combines the PIC24F MIPS toolchain, free MPLAB X IDE, and a generous 32 KB Flash budget at sub-$3 pricing. The 28-SSOP package is hand-solderable, which matters for kits and prototyping. Students learn sensor integration (encoders, IMU via I2C, RC PWM input) and PWM motor drive on the same chip. According to DigiKey and Mouser listings as of 2026-09-30, this part is commonly stocked for the educational market.
Recommended
LED Lighting with Touch Dimming
Combining CTMU capacitive touch input with PWM-controlled constant-current LED drivers, the PIC24FJ32MC102-I/SS provides dimming and on/off control for architectural and under-cabinet LED lighting. The 16 MIPS performance easily runs smooth logarithmic dimming curves and stores user preferences in Flash, while MCPWM outputs drive the LED driver ICs. As a low-cost 16-bit MCU it competes with 8-bit parts on price while delivering smoother light output thanks to 16-bit PWM duty resolution. PPS lets the board designer place touch and PWM signals on any convenient pin.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32MC102-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32MC102-E/SS | PIC24FJ16MC102-I/SS | PIC24FJ16MC102T-I/SS | PIC24FJ32MC102-I/SO | PIC24FJ32MC101-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SOIC - same pinout | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 16 KB | 16 KB | 32 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Maximum CPU Speed | 16 MIPS @ 32 MHz | 16 MIPS @ 32 MHz | 16 MIPS @ 32 MHz | 16 MIPS @ 32 MHz | 16 MIPS @ 32 MHz | 16 MIPS @ 32 MHz |
| Operating Temperature | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| Motor Control Peripherals | MCPWM, CTMU, PPS | MCPWM, CTMU, PPS | MCPWM, CTMU, PPS | MCPWM, CTMU, PPS | MCPWM, CTMU, PPS | MCPWM, CTMU, PPS |
| Package Pin Count | 28 | 28 | 28 | 28 | 28 | 28 |
Key Differentiators
- Integrated CTMU for capacitive touch plus motor control on one MCU (vs PIC24FJ32MC101-I/SS)
- 32 KB Flash with same SSOP pinout as 16 KB cousin (vs PIC24FJ16MC102-I/SS)
- Industrial -40C to +85C operating temperature with same Flash size (vs PIC24FJ32MC102-E/SS)
Design Notes
Power the PIC24FJ32MC102-I/SS from a 3.3V LDO (e.g., MCP1700) capable of at least 100 mA; the part's I/O current budget and analog reference draw exceed typical low-quiescent regulators. Place 100 nF decoupling on each VDD pin and a bulk 4.7-10 uF tantalum or ceramic capacitor near the supply pin. All VDD and VSS pins must be connected even if some are not used by your code path, otherwise in-circuit programming will fail per the Microchip datasheet document 30009997e.
Route the ICSPDAT and ICSPCLK lines to a 0.1 inch pitch header with no series resistors in-line with the MCU pins. Keep the ICSP traces short (under 50 mm) and away from high-current motor PWM traces to avoid noise coupling during debug. The 28-SSOP package leaves about 0.65 mm of clearance between pads and pins; use 0.1 mm trace width with 0.15 mm clearance in the SSOP land pattern.
Estimated: At 32 MHz and full I/O toggling, the PIC24FJ32MC102-I/SS dissipates approximately 60-90 mW internally. The 28-SSOP thermal pad provides no exposed pad, so theta_JA is high (~80-100 C/W); for industrial -40C to +85C operation, expect up to 5C temperature rise inside a sealed enclosure, which is well within limits. Avoid stacking the MCU directly above heat-generating gate drivers.
Do not exceed 3.6 V on any VDD pin or 5 V on any I/O; the PIC24FJ32MC102-I/SS is a 3.3V-only part, unlike the 5V-tolerant PIC18 family. Per the datasheet, programming cannot occur above +125C junction, so high-temperature in-circuit programming is not supported. Always configure the PPS register before enabling a peripheral on a remapped pin or the peripheral will not drive any output.
When driving MCPWM outputs into a gate driver, place a 22-100 ohm series resistor near the MCU pin to slow the edge rate and reduce ringing on the gate-driver input capacitance. Keep the ground return of the MCU and gate driver on the same 0V reference star-point to prevent PWM-induced ground bounce from confusing the MCU's ADC or CTMU measurements.
Compliance Information
RoHS and lead-free per Microchip product page. Industrial temperature I/SS grade is not AEC-Q100 qualified; automotive designs should look at the PIC24FJ32MC102 AEC-Q100 equivalent variants.
