PIC24FJ32MC102-E/TL - 16-bit 32KB Flash Motor Control MCU | Microchip
MPN: PIC24FJ32MC102-E/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.05 | $30.50 |
| 100 | $2.62 | $262.00 |
| 500 | $2.28 | $1,140.00 |
| 1,000 | $1.98 | $1,980.00 |
PIC24FJ32MC102-E/TL Overview
A 16-bit microcontroller (MCU) is a programmable embedded processor that balances 32-bit class arithmetic performance with the cost and code density of a 16-bit instruction set. The PIC24F architecture belongs to the modified Harvard MCU family, sitting in the wider taxonomy of: microcontroller → embedded processor → integrated circuit → semiconductor. Compared with 8-bit MCUs, 16-bit cores deliver higher throughput (16 MIPS here), wider data paths for sensor fusion, and richer peripherals; compared with 32-bit Cortex-M parts, they typically win on cost, deterministic interrupt latency, and lower active power. The "FJ" sub-family adds hardware multiply and divide plus a flexible peripheral set aimed at real-time motor and power-conversion control.
Differentiating specifications include 32 KB self-programmable Flash (11K × 24 words), 2 KB SRAM, an integrated 8 MHz internal oscillator, CTMU for time-of-flight/capacitive sensing, PPS for remapping digital peripherals to any I/O, and dedicated Motor Control PWM with complementary outputs and programmable dead time. The wide VIN (2.0 V–3.6 V) range plus on-chip low-voltage detection (LVD) and brown-out reset (BOR) supports robust field deployment.
Architecturally, the device uses a modified Harvard core with separate program and data buses, a 16 × 16 hardware multiplier, and a four-deep output compare / PWM pipeline optimized for closed-loop field-oriented control (FOC) firmware. The CTMU provides a constant-current source that, combined with ADC sampling, enables on-chip temperature measurement, proximity sensing, and high-resolution time measurement.
Typical applications include BLDC/PMSM motor drives (small fans, pumps, appliance motors), consumer white goods, low-cost automotive body electronics (HVAC blowers, seat fans), capacitive-touch user interfaces built on CTMU, and entry-level digital power-conversion loops. Designers often pair this MCU with gate-driver ICs and small BLDCs in 24 V battery-powered systems.
When designing with this part, place a 1 µF plus 100 nF decoupling pair within 5 mm of every VDD/VCAP pin and route the analog AVdd track through a ferrite bead to maximize ADC SNR. For motor-drive PCB layouts, keep the MCPWM traces short and symmetric and isolate the high-current FET bridge from the MCU ground pour with a star-ground topology.
This page synthesizes distributor pricing, drop-in / same-family PIC24F alternatives, and practical design notes not found in the manufacturer datasheet alone, making it a single-source reference for engineers and procurement teams.
Drop-in alternatives for PIC24FJ32MC102-E/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-E/TL (same form factor and footprint) — differing in ADC, Motor Control PWM (MCPWM), Package, Program Memory (Flash), Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32MC102-I/TL
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC24FJ32MC104-I/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.15 / Unit
View Datasheet →PIC24FJ64MC102-E/TL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32MC102-E/TL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit modified Harvard |
| CPU Performance | 16 MIPS |
| Program Memory (Flash) | 32 KB (11K × 24) |
| Data Memory (RAM) | 2 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| Operating Temperature Range | -40 °C to +125 °C (extended "E" grade) |
| ADC | 10-bit, 8-channel |
| Motor Control PWM (MCPWM) | Yes, with complementary outputs and programmable dead time |
| Peripheral Pin Select (PPS) | Yes |
| Charge Time Measurement Unit (CTMU) | Yes |
| Internal Oscillator | 8 MHz internal RC |
| Timers | Multiple 16-bit Timer/Counter modules |
| Communication | UART, SPI, I²C |
| I/O Pins | Up to 25 digital I/O (package-dependent) |
| Package | 36-pin VTLA (6 × 6 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ32MC102-E/TL Pin Configuration
| Pin 1 | VDD — Digital supply voltage (2.0 V to 3.6 V) |
| Pin 2 | PMP5/RE5 — PWM output or general I/O |
| Pin 3 | PMP4/RE4 — PWM output or general I/O |
| Pin 4 | PMP3/RE3 — PWM output or general I/O |
| Pin 5 | PMP2/RE2 — PWM output or general I/O |
| Pin 6 | PMP1/RE1 — PWM output or general I/O |
| Pin 7 | PMP0/RE0 — PWM output or general I/O |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSC1/CLKI — Crystal oscillator input or external clock |
| Pin 10 | OSC2/CLKO — Crystal oscillator output |
| Pin 11 | RA0 — General I/O / analog input AN0 |
| Pin 12 | RA1 — General I/O / analog input AN1 |
| Pin 13 | RB0 — General I/O / programming PGED1 |
| Pin 14 | RB1 — General I/O / programming PGEC1 |
| Pin 15 | RB2 — General I/O |
| Pin 16 | RB3 — General I/O |
| Pin 17 | RA2 — General I/O / analog input AN2 |
| Pin 18 | RA3 — General I/O / analog input AN3 |
| Pin 19 | RC0 — General I/O / analog input AN4 |
| Pin 20 | RC1 — General I/O / analog input AN5 |
| Pin 21 | RC2 — General I/O / analog input AN6 |
| Pin 22 | RC3 — General I/O / analog input AN7 |
| Pin 23 | RC4 — General I/O |
| Pin 24 | RC5 — General I/O |
| Pin 25 | VSS — Digital ground |
| Pin 26 | VDD — Digital supply voltage |
| Pin 27 | AVDD — Analog supply voltage |
| Pin 28 | AVSS — Analog ground |
| Pin 29 | VCAP — Core voltage decoupling capacitor |
| Pin 30 | RD0 — General I/O |
| Pin 31 | RD1 — General I/O |
| Pin 32 | RB4 — General I/O / SDA1 (PPS) |
| Pin 33 | RB5 — General I/O / SCL1 (PPS) |
| Pin 34 | RB6 — General I/O / ICS PGD |
| Pin 35 | RB7 — General I/O / ICS PGC |
| Pin 36 | MCLR — Master clear (reset), active-low |
Typical Applications
PIC24FJ32MC102-E/TL is suitable for 7 applications: BLDC / PMSM Motor Control (Small Fans, Pumps, Appliance), Automotive Body Electronics (HVAC Blower, Seat Fan, Mirror Control), Capacitive Touch User Interface (CTMU-Based Buttons & Sliders), Low-Cost Digital Power Conversion (DC-DC, LED Drivers, Battery Chargers), Sensor Hub & Industrial IoT End Nodes, Consumer White Goods (Washing Machines, Dishwashers, Small Appliances), Unmanned Aerial Vehicle (UAV) / Drone Motor ESC.
BLDC / PMSM Motor Control (Small Fans, Pumps, Appliance)
The PIC24FJ32MC102-E/TL's integrated Motor Control PWM (MCPWM) block with complementary outputs and programmable dead time makes it a strong fit for sensorless BLDC and PMSM field-oriented control (FOC) of small fans, pumps, and white-goods appliance motors. Its 16 MIPS PIC24 core runs the FOC loop (Clarke/Park + inverse Park + SVPWM) within a few microseconds at typical 10–20 kHz switching frequencies. The 8-channel 10-bit ADC samples phase currents at >200 ksps with 2.0 V–3.6 V VDD, while PPS remaps comparator outputs and PWM fault pins to any I/O. Compared with Cortex-M0 alternatives, the deterministic PIC24F interrupt latency simplifies real-time motor control. Pair this MCU with a 3-phase gate-driver such as the Microchip MCP8024 or FAN8082 for a compact 24 V drive stage.
Recommended
Automotive Body Electronics (HVAC Blower, Seat Fan, Mirror Control)
The -E temperature grade (-40 °C to +125 °C) plus automotive-grade qualification pathway makes the PIC24FJ32MC102-E/TL well suited to body-electronics modules such as HVAC blowers, seat-cooling fans, and power-mirror controllers. The MCPWM drives the BLDC blower motor while the ADC reads back motor current and temperature; integrated BOR/LVD handle automotive load-dump transients when paired with an upstream TVS and 5 V → 3.3 V LDO such as the MCP1755. The 32 KB Flash accommodates CAN-capable middleware, and the PIC24F deterministic interrupt latency meets automotive 1 ms task deadlines. For LIN-bus body modules, an external LIN transceiver such as the MCP2003B or ATA663231 completes the network stack with this MCU as the master controller.
Recommended
Capacitive Touch User Interface (CTMU-Based Buttons & Sliders)
The on-chip Charge Time Measurement Unit (CTMU) turns the PIC24FJ32MC102-E/TL into a low-cost capacitive-touch controller for appliance front panels, IoT wall switches, and consumer remote controls. The CTMU supplies a constant current to the sense pad while an internal ADC channel measures charge time, yielding sub-pF resolution that supports multi-button panels and linear sliders behind 3 mm of plastic. A typical implementation scans 8–12 touch pads at 50 Hz with <10 mA active current; the 32 KB Flash stores the touch-state machine, debounce, and gesture logic. Combined with PPS and the UART/SPI/I²C peripherals, the same MCU also drives an LED indicator and links to a host controller. Designers frequently pair it with a Microchip MCP1700 LDO and a 4-channel LED driver such as the MIC3223.
Recommended
Low-Cost Digital Power Conversion (DC-DC, LED Drivers, Battery Chargers)
The PIC24FJ32MC102-E/TL is an effective control core for low-power digital DC-DC converters, constant-current LED drivers, and small lithium-battery chargers where its 16 MIPS core and high-resolution MCPWM give precise duty-cycle control. A typical 150 kHz buck converter with PID firmware runs entirely in one PWM period with margin; the 10-bit ADC reads output voltage and current via on-chip sense amplifiers. The 2.0 V–3.6 V VDD range supports direct operation from a single Li-ion cell through an LDO, and the -E grade enables under-hood and outdoor LED-driver installations. For PFC + LLC or higher-power designs, the larger PIC24FJ256GA606 or dsPIC33 variants are appropriate; for sub-100 W applications this device is a sweet spot between 8-bit PIC16F and full 32-bit DSP.
Recommended
Sensor Hub & Industrial IoT End Nodes
For battery-powered industrial sensor hubs and edge-IoT nodes, the PIC24FJ32MC102-E/TL combines low active power with 16-bit throughput that comfortably runs sensor-fusion state machines on time-of-flight, temperature, pressure, and humidity data. The CTMU enables precise time-of-flight ranging to neighbouring sensors, while UART/SPI/I²C talk to MEMS sensors and an external LoRa or Sub-GHz transceiver such as the Microchip SAMR34 or RN2483. The 32 KB Flash fits the MQTT-SN bridge or simple CoAP client, and the 2 KB SRAM buffers sensor bursts before transmission. Industrial -E temperature rating allows outdoor deployment behind solar panels. Common pairings are with a TI P-channel load switch for power gating and a SuperCap-backed RTC for timestamped events.
Recommended
Consumer White Goods (Washing Machines, Dishwashers, Small Appliances)
In consumer white goods such as compact washing machines, dishwashers, induction-cooktop controls, and induction rice cookers, the PIC24FJ32MC102-E/TL handles the BLDC drum motor, valve driver, water-level sensing via the ADC, and front-panel capacitive touch. The integrated MCPWM provides the variable-frequency drive for the drum motor, while the CTMU detects water-level capacitive probes; the UART connects to the main display board and I²C reads thermistors. The 32 KB Flash holds the appliance control firmware including safety interlocks, weigh-sensor calibration, and fault logs. The part's surface-mount VTLA-36 package is well suited to compact control boards where the I/O count fits. Pair with an 8-bit PIC16F companion for power-button / LED-bar subsystems.
Recommended
Unmanned Aerial Vehicle (UAV) / Drone Motor ESC
The PIC24FJ32MC102-E/TL's MCPWM with hardware dead-time generation makes it a viable control core for small hobby-grade electronic-speed controllers (ESCs) driving the BLDC motors in micro-UAVs, mini-quadcopters, and tethered drone platforms. The 16 MIPS PIC24 core implements a fast commutation loop (often trapezoidal with back-EMF sensing via the ADC) while PPS lets the comparator input be remapped to spare I/O. At 5–15 A continuous phase current, the MCU pairs directly with logic-level FETs on a small 4-layer PCB; an internal 8 MHz oscillator minimizes external components. Compared with Cortex-M0 alternatives, the PIC24F's deterministic interrupt latency makes the firmware easier to certify against jitter-induced commutation errors. For higher-power ESCs, the dsPIC33FJ32MC102 variant with its DSP MAC adds sinusoidal FOC headroom.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32MC102-E/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32MC102-I/TL | PIC24FJ32MC104-I/TL | dsPIC33FJ32MC102-E/MM | PIC24FJ64MC102-E/TL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VTLA-36 (6 × 6 mm) | VTLA-36 (6 × 6 mm) - same | VTLA-36 (6 × 6 mm) - same | QFN-28 (6 × 6 mm) - different, PCB rework required | VTLA-36 (6 × 6 mm) - same |
| Flash Memory | 32 KB | 32 KB - same | 64 KB (+100%) | 32 KB - same | 64 KB (+100%) |
| RAM | 2 KB | 2 KB - same | 2 KB - same (some MC104 SKUs up to 8 KB) | 2 KB - same | 2 KB - same |
| Core / MIPS | PIC24F / 16 MIPS | PIC24F / 16 MIPS - same | PIC24F / 16 MIPS - same | dsPIC33 / 40 MIPS + DSP MAC (+150%) | PIC24F / 16 MIPS - same |
| Operating Temperature | -40 °C to +125 °C (-E grade) | -40 °C to +85 °C (-I grade) | -40 °C to +85 °C (-I grade) | -40 °C to +125 °C (-E grade) | -40 °C to +125 °C (-E grade) |
| ADC | 10-bit, 8-channel | 10-bit, 8-channel - same | 10-bit, 8-channel - same | 10-bit, 8-channel - same | 10-bit, 8-channel - same |
| MCPWM | Yes, complementary + dead time | Yes - same | Yes - same | Yes, plus 40-bit MAC for FOC - upgraded | Yes - same |
| CTMU | Yes | Yes - same | Yes - same | Yes - same | Yes - same |
Key Differentiators
- True drop-in same-VTLA-36 package for non-automotive designs (vs PIC24FJ32MC102-I/TL)
- Memory-up variant without package change (vs PIC24FJ32MC104-I/TL)
- DSP engine available for sinusoidal FOC (vs dsPIC33FJ32MC102-E/MM)
Design Notes
Place a 1 µF plus 100 nF decoupling pair within 5 mm of every VDD pin and a separate 1 µF + 100 nF pair on AVdd. Drive AVdd through a ferrite bead to maximize ADC SNR. The VCAP pin requires a 1 µF–10 µF low-ESR ceramic; do not place a load on VCAP. For 3.3 V rails sourced from 5 V, a Microchip MCP1755 or MCP1700 LDO is recommended; the on-chip BOR trips below 2.0 V to protect Flash writes.
Keep the MCPWM traces to the gate-driver short and matched in length to within 5 mm to avoid duty-cycle skew that creates a DC-bias in the motor windings. Use a star-ground topology tying digital GND, analog GND, and power-stage GND at a single point under the MCU's exposed pad or VSS pin. Place the crystal within 5 mm of OSC1/OSC2 and guard the traces with a digital ground ring. CTMU-driven touch pads should be routed as shielded, short traces with a guard ring driven by a quiet I/O to suppress moisture-induced false triggers.
Do not exceed 3.6 V on VDD or 5 V tolerant pins; the PIC24FJ32MC102 family is not 5 V tolerant on digital I/O. Always pull MCLR high through a 10 kΩ resistor; leaving MCLR floating will cause spurious resets. When migrating from PIC24FJ16MC102 (16 KB Flash) to this 32 KB part, the linker map and configuration bit placement change - regenerate the project in MPLAB X to avoid out-of-bought sectors.
Estimated: at maximum 16 MIPS sustained activity with all peripherals enabled, the VTLA-36 package dissipates under 200 mW. With an exposed-pad copper area of at least 100 mm² on a 1 oz 4-layer board, theta_JA falls below 35 °C/W. For closed-enclosure designs (appliance white goods, automotive dashboards), validate at +85 °C ambient with the MCPWM driving a FET bridge for full thermal margin.
Compliance Information
RoHS compliant per Microchip product page. The -E suffix denotes extended -40 °C to +125 °C operating temperature. AEC-Q100 qualification evidence for the PIC24FJ32MC102 family is published on the Microchip automotive page; the -E/TL variants are typically specified for automotive body-electronics and white-goods industrial deployments.
