PIC24FJ16MC102T-I/SO - 16-bit 16 MIPS Motor Control MCU | Microchip
MPN: PIC24FJ16MC102T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.05 | $30.50 |
| 100 | $2.71 | $271.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC24FJ16MC102T-I/SO Overview
An MCU (microcontroller unit) is an integrated system-on-chip that combines a CPU core, volatile and non-volatile memory, and a configurable peripheral set behind a single package. The PIC24FJ family implements a modified Harvard architecture with a 16-bit data path, a 24-bit instruction word, and a 17-bit by 16-bit hardware multiplier; code is executed in a single cycle from Flash, and the device is C-compiler-optimized for embedded application development. The motor-control (MC) sub-family extends this base with peripherals specifically engineered for driving BLDC, PMSM, ACIM and stepper stages.
Key features of the PIC24FJ16MC102T-I/SO include up to 6 PWM channels with dedicated PWM time bases for complementary, edge-aligned or center-aligned switching, a 6-channel 10-bit ADC with conversion rates up to 500 ksps, multiple communication interfaces (UART, SPI, I2C), an 8 MHz internal oscillator with 4x PLL option (yielding 32 MHz operation), and CTMU support for touch and current sensing. The device supports industrial-grade -40 °C to +85 °C operation, three 16-bit timers and one 32-bit timer, and PPS (Peripheral Pin Select) for flexible I/O mapping.
Architecturally, the PIC24FJ MC family combines the standard PIC24 core with a Motor Control PWM (MCPWM) module capable of generating complementary PWM outputs with programmable dead time, a high-speed ADC trigger, and a QEI (Quadrature Encoder Interface) for closed-loop rotor position sensing. The CTMU (Charge Time Measurement Unit) provides on-chip timing for capacitive touch and for current-sensing analog front-ends, removing external analog conditioning.
Typical applications include low-cost BLDC and PMSM sensorless or sensored motor drives (small fans, pumps, appliance motors), 3D-printer stepper control, washing-machine and home-appliance motor boards, and LED lighting power stages. Its small 28-SOIC footprint is also attractive for hobby motor-control boards and Christmas-light controllers where board area is constrained.
When designing with this part, ensure the supply is decoupled with 10 µF bulk plus 100 nF ceramic close to VDD/AVDD pins, and respect the 3.6 V absolute maximum to avoid latch-up. The 'T' suffix indicates Tape & Reel packaging, and the -I (Industrial) temperature grade covers -40 °C to +85 °C operation.
This page synthesizes distributor pricing, drop-in alternatives in the same SOIC-28 footprint, and practical design notes not aggregated in any single distributor listing — useful for engineers evaluating second-source or pin-compatible replacements for the PIC24FJ16MC102T-I/SO.
Drop-in alternatives for PIC24FJ16MC102T-I/SO — 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 PIC24FJ16MC102T-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, ADC, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ16MC102-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ16MC101-I/SO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC24FJ16MC102-I/SS
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →PIC24FJ16MC102T-I/ML
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC24FJ32MC102-I/SO
✅ Drop-In✓ In Stock
$2.54 / Unit
View Datasheet →PIC24FJ16MC102T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit (modified Harvard) |
| CPU Performance | 16 MIPS at 32 MHz |
| Max CPU Frequency | 32 MHz (8 MHz internal + 4x PLL) |
| Program Memory (Flash) | 16 KB (5.5K x 24 words) |
| Data RAM | 1 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40 °C to +85 °C (Industrial, -I) |
| Package | 28-pin SOIC (0.295 inch / 7.50 mm body width) |
| Mounting Type | Surface Mount |
| ADC | 6-channel, 10-bit, up to 500 ksps |
| PWM Channels | Up to 6 (MCPWM, with complementary outputs and dead time) |
| Timers | 3 x 16-bit + 1 x 32-bit |
| Communication | UART, SPI, I2C |
| Internal Oscillator | 8 MHz with 4x PLL and multiple divide options |
| Special Features | CTMU, PPS, QEI, 17-bit hardware multiplier / 16-bit divider |
| MSL Level | MSL 1 |
| RoHS Status | Compliant |
| Lifecycle Stage | ACTIVE |
PIC24FJ16MC102T-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, active-low |
| Pin 2 | OSC1/RA0 — Oscillator input or GPIO RA0 |
| Pin 3 | OSC2/RA1 — Oscillator output or GPIO RA1 |
| Pin 4 | RA2 — GPIO RA2 |
| Pin 5 | RA3 — GPIO RA3 |
| Pin 6 | RA4 — GPIO RA4 |
| Pin 7 | RA5 — GPIO RA5 |
| Pin 8 | VSS — Ground |
| Pin 9 | RA6 — GPIO RA6 |
| Pin 10 | RA7 — GPIO RA7 |
| Pin 11 | RB0 — GPIO RB0 / AN0 |
| Pin 12 | RB1 — GPIO RB1 / AN1 |
| Pin 13 | RB2 — GPIO RB2 / AN2 |
| Pin 14 | RB3 — GPIO RB3 / AN3 |
| Pin 15 | RB4 — GPIO RB4 / AN4 |
| Pin 16 | RB5 — GPIO RB5 / AN5 |
| Pin 17 | RB6 — GPIO RB6 |
| Pin 18 | RB7 — GPIO RB7 |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Digital supply, 3.0-3.6 V |
| Pin 21 | RC0 — GPIO RC0 |
| Pin 22 | RC1 — GPIO RC1 |
| Pin 23 | RC2 — GPIO RC2 |
| Pin 24 | RC3 — GPIO RC3 |
| Pin 25 | RC4 — GPIO RC4 |
| Pin 26 | RC5 — GPIO RC5 |
| Pin 27 | AVSS — Analog ground |
| Pin 28 | AVDD — Analog supply, 3.0-3.6 V |
Typical Applications
PIC24FJ16MC102T-I/SO is suitable for 6 applications: BLDC / PMSM Sensorless Fan Control, Low-Cost Stepper / 3D-Printer Driver Board, Home Appliance Motor Control (Washing Machines, Pumps), Sensorless / Sensored Ceiling-Fan BLDC Driver, Battery-Powered LED Lighting and Decorative Drivers, Small Servo and Robotics Hobby Drivers.
BLDC / PMSM Sensorless Fan Control
The PIC24FJ16MC102T-I/SO is well matched to sensorless BLDC fan control because its 6-channel MCPWM delivers complementary PWM with programmable dead time to drive a three-phase inverter at up to 32 MHz CPU speed, while the 6-channel 10-bit ADC samples back-EMF zero-crossings for commutation. The CTMU module handles current sensing through a shunt resistor with sub-microsecond timing, eliminating the analog comparator. The 1 KB SRAM is sufficient for state-machine sensorless algorithms; 16 KB Flash fits vector-control or back-EMF firmware. Industrial -40 °C to +85 °C operation ensures fan reliability in PC, appliance, and HVAC enclosures.
Recommended
Low-Cost Stepper / 3D-Printer Driver Board
The PIC24FJ16MC102T-I/SO serves as a stepper controller in 3D-printer boards by generating two bipolar stepper channels from its 6-channel MCPWM, while the 6-channel 10-bit ADC reads thermistor and end-stop inputs. 16 MIPS is enough throughput to run trapezoidal motion profiling and UART/I2C command interfaces simultaneously. The 28-SOIC footprint fits compact Sanguinololu / Melzi-style controller boards. Industrial temperature grade supports enclosed-printer thermal loads, and PPS pin mapping lets the designer route PWM and serial lines to convenient PCB locations without re-routing firmware.
Recommended
Home Appliance Motor Control (Washing Machines, Pumps)
Home-appliance motor boards (washing-machine pumps, dishwasher circulators, dishwasher drain pumps) use the PIC24FJ16MC102T-I/SO for its dedicated motor-control PWM and QEI peripherals. The QEI directly interfaces to Hall sensors or incremental encoders for closed-loop rotor position, while the 6-channel ADC reads motor current, voltage, and temperature. 16 KB Flash stores speed/torque control curves and safety state machines; 1 KB RAM buffers ADC scan data. The industrial -40 °C to +85 °C temperature grade ensures operation inside appliance cabinets, and the 28-SOIC footprint supports wave-soldered production lines.
Recommended
Sensorless / Sensored Ceiling-Fan BLDC Driver
Ceiling fans and small ceiling-mounted BLDC drivers benefit from the PIC24FJ16MC102T-I/SO's combination of MCPWM, ADC, and CTMU in a 28-SOIC package that fits a 50 mm diameter motor-control PCB. The internal 8 MHz oscillator with 4x PLL removes the need for an external crystal, reducing BOM cost. 16 MIPS is enough to implement sensorless trapezoidal commutation with active braking and soft-start; the CTMU provides microamp-accurate timing for zero-crossing detection. Industrial temperature grade (-40 °C to +85 °C) is critical for ceiling environments with poor ventilation.
Recommended
Battery-Powered LED Lighting and Decorative Drivers
Battery and mains-LED decorative drivers (Christmas lights, RGB pixel controllers, accent lighting) use the PIC24FJ16MC102T-I/SO as a low-cost 3.3 V MCU whose PWM channels dim multiple LED strings while the ADC monitors battery voltage or current. CTMU supports touch-button user interfaces without external analog components, and 16 MIPS is ample for WS2812 / APA102 protocol bit-banging or DMX-style control. The 28-SOIC footprint handles wave-soldering; industrial temperature grade ensures outdoor string operation. PPS pin select lets designers route PWM outputs to convenient PCB edges.
Recommended
Small Servo and Robotics Hobby Drivers
Hobby robotics platforms, pan-tilt servo controllers, and small-servo driver boards integrate the PIC24FJ16MC102T-I/SO because 6 PWM channels drive up to six hobby servos at 50 Hz refresh, while the UART and I2C peripherals talk to host controllers and sensor buses. 16 MIPS handles up to 12-bit servo position interpolation and sensor-fusion loops. The 28-SOIC footprint is breadboard-friendly on through-hole adapter boards, and the industrial temperature grade supports outdoor robotics. CTMU provides capacitive-touch input for robot start/stop.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ16MC102T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ16MC102-I/SO | PIC24FJ16MC101-I/SO | PIC24FJ16MC102-I/SS | PIC24FJ16MC102T-I/ML | PIC24FJ32MC102-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SSOP - same pinout, smaller footprint | 28-QFN - same pinout, smaller footprint | 28-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB (+100%) |
| RAM | 1 KB | 1 KB | 0.5 KB (-50%) | 1 KB | 1 KB | 2 KB (+100%) |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC Channels | 6 x 10-bit | 6 x 10-bit | 6 x 10-bit | 6 x 10-bit | 6 x 10-bit | 6 x 10-bit |
| 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 |
| Temperature Grade | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Dedicated motor-control peripherals (MCPWM, QEI, CTMU) (vs PIC24FJ16GA002)
- 32 KB Flash option available in same SOIC-28 footprint (vs PIC24FJ32MC102-I/SO)
- Multiple package options (SOIC, SSOP, QFN) on same die (vs PIC24FJ16MC102-I/SS)
Design Notes
The PIC24FJ16MC102T-I/SO operates from 3.0 V to 3.6 V; exceeding 3.6 V on VDD or AVDD can permanently damage the device. Decouple VDD and AVDD with a 10 µF bulk + 100 nF ceramic capacitor within 5 mm of each pin, and tie AVDD to VDD through a ferrite bead if analog performance is critical. Power-on ramp should be monotonic; MCLR must track VDD during power-up via a 10 kΩ pull-up to VDD.
The 28-SOIC land pattern requires a 1.27 mm pitch SOIC footprint. Route MCLR with a short trace to its pull-up resistor to avoid false resets from noise; isolate analog traces (AN0-AN5, AVSS, AVDD) from PWM switching traces to reduce ADC noise coupling. For motor-control boards, place the MCU ground pin return path directly above the input shunt resistor ground to avoid ground bounce corrupting current-sense ADC readings.
Do not assume the 101 and 102 variants are interchangeable in firmware: PIC24FJ16MC101 has 0.5 KB RAM vs 1 KB on 102, and a reduced pin count peripheral map. Always verify the device ID register (DSU peripheral) before running code, and reserve the last page of program Flash for the device configuration registers. Do not enable the internal PLL until the system clock has stabilized — failure to wait 1 ms after clock switch can cause undefined behavior on PWM outputs.
Compliance Information
RoHS compliant per Microchip product page; industrial temperature grade is not AEC-Q100 qualified — choose PIC24FJ-Automotive variants for vehicle applications.
