PIC24FJ32MC101-I/SO - 16-bit 32KB Flash MCU 20-SOIC | Microchip
N.º de pieza: PIC24FJ32MC101-I/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.85 | $28,50 |
| 100 | $2.42 | $242,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.74 | $1.740,00 |
PIC24FJ32MC101-I/SO Descripción general
A PIC24F microcontroller is a 16-bit reduced instruction set computing (RISC) MCU in the broader PIC24F/PIC24H family of dsPIC-style microcontrollers from Microchip Technology. Within the wider product hierarchy, PIC24F belongs to the 16-bit microcontroller class -> microcontroller -> embedded controller -> semiconductor IC. The "24F" prefix denotes the FLASH-based, low-power variant optimised for cost-sensitive motor control and general-purpose applications, while the "MC" suffix in this part designates the Motor Control sub-family with hardware MCPWM, CTMU, and PPS peripherals.
Key features include a 16-channel 10-bit ADC with 500 ksps conversion rate, two UART modules, one SPI port, one I2C bus, five 16-bit timers, three analogue comparators, a Charge Time Measurement Unit (CTMU), and a Peripheral Pin Select (PPS) system that remaps digital peripherals to a wide range of I/O pins. The device integrates a 6-channel MCPWM (Motor Control PWM) module and supports up to 15 I/O pins in this 20-pin package. It also includes a configurable Watchdog Timer, brown-out reset, and an in-circuit serial programming (ICSP) interface.
Architecturally the PIC24FJ32MC101 combines a 16-bit datapath with a single-cycle ALU and hardware multiply/divide, allowing deterministic interrupt response and C-compiler efficient code. The CTMU enables capacitive touch sensing and precise time measurement, while the PPS router eliminates the fixed peripheral-to-pin mapping constraint of older PIC16/PIC18 parts. An integrated 8 MHz internal RC oscillator with PLL multiplication to 32 MHz removes the need for external crystals in many designs, reducing BOM cost.
Typical applications include BLDC and PMSM motor drives (low-voltage fan, pump, appliance control), small appliance and white goods motor control boards, LED lighting controllers, sensor interfaces (using CTMU for touch/proximity), and general-purpose 3.3V embedded control. Automotive infotainment auxiliary modules and consumer robotics also benefit from the wide supply and temperature ranges. The combination of small footprint, motor-control peripherals, and on-chip CTMU makes this part a frequent choice where designers need compact, single-chip motion control.
Designers should note that the 3.0V to 3.6V supply range is narrow - it is incompatible with 5V systems without level shifting. Decouple VDD/VSS with at least a 100 nF ceramic capacitor placed within 5 mm of the supply pins. The analog VDD/VSS pair requires a separate clean analog ground plane, and the ADC conversion accuracy is sensitive to high-frequency digital switching near AVSS - keep switching nodes and the MCU grounds segregated to one point.
This page synthesises real-time distributor pricing, verified drop-in alternatives from the same PIC24FJ32MC family, and practical design notes that go beyond the manufacturer datasheet to help engineers shorten time-to-prototype.
Alternativas directas para PIC24FJ32MC101-I/SO — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC24FJ32MC101-I/SO (mismo factor de forma y huella) — difiere en Operating Temperature, Package, ADC, Core, Mounting Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC24FJ32MC101-I/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.3 / unidad
Ver hoja de datos →PIC24FJ32MC101-E/SO
✅ Sustitución directa✓ En stock
$2.05 / unidad
Ver hoja de datos →PIC24FJ32MC101T-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24FJ16MC101-I/SO
✅ Sustitución directa✓ En stock
$1.95 / unidad
Ver hoja de datos →PIC24FJ16MC102-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24FJ32MC101-I/SO Valores máximos y características eléctricas
| Core | PIC24F (16-bit RISC, modified Harvard) |
| Instruction Throughput | 16 MIPS |
| CPU Clock (max) | 32 MHz (with PLL) |
| Program Memory (FLASH) | 32 KB (11K x 24 words) |
| Data RAM | 2 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Temperatura de funcionamiento | -40 C to +125 C (industrial, "-I" suffix) |
| Encapsulado | 20-pin SOIC (SO), 7.50 mm body width |
| Tipo de montaje | Surface Mount |
| ADC | 10-bit, up to 500 ksps |
| MCPWM Channels | 6 channels |
| Timers | 5 x 16-bit |
| Comparators | 3 analogue comparators |
| Communication | 2x UART, 1x SPI, 1x I2C |
| Peripheral Pin Select (PPS) | Yes |
| CTMU | Yes (Charge Time Measurement Unit) |
| Watchdog Timer | Yes |
| I/O Pins (max) | 15 |
| ICSP / In-Circuit Programming | Yes |
| Brown-out Reset | Yes |
| Estado RoHS | Compliant |
Configuración de pines de PIC24FJ32MC101-I/SO
| Pin 1 | MCLR/VPP/RA5 — Master Clear (reset) input / ICSP programming voltage / digital I/O RA5 |
| Pin 2 | RA0 — Digital I/O / analog AN0 / comparator C1IN+ (PPS-remappable) |
| Pin 3 | RA1 — Digital I/O / analog AN1 / comparator C1IN- (PPS-remappable) |
| Pin 4 | RB0 — Digital I/O / AN2 / PGED1 (ICSP data) (PPS-remappable) |
| Pin 5 | RB1 — Digital I/O / AN3 / PGEC1 (ICSP clock) (PPS-remappable) |
| Pin 6 | RB2 — Digital I/O / AN4 (PPS-remappable) |
| Pin 7 | RB3 — Digital I/O / AN5 (PPS-remappable) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/RA2 — Crystal oscillator input or digital I/O RA2 |
| Pin 10 | OSC2/RA3 — Crystal oscillator output or digital I/O RA3 |
| Pin 11 | RA4 — Digital I/O / analog AN4 / CTMU input (PPS-remappable) |
| Pin 12 | RB4 — Digital I/O (PPS-remappable) |
| Pin 13 | RB5 — Digital I/O (PPS-remappable) |
| Pin 14 | RB6 — Digital I/O (PPS-remappable) |
| Pin 15 | RB7 — Digital I/O (PPS-remappable) |
| Pin 16 | RB8 — Digital I/O (PPS-remappable) |
| Pin 17 | RB9 — Digital I/O (PPS-remappable) |
| Pin 18 | VDD — Positive supply voltage (3.0V to 3.6V) |
| Pin 19 | AVSS — Analog ground reference |
| Pin 20 | AVDD — Analog positive supply voltage |
Aplicaciones típicas
PIC24FJ32MC101-I/SO es adecuado para 7 aplicacións: BLDC / PMSM Motor Control, Small Appliance Motor Control, LED Lighting Controllers, Capacitive Touch Sensing Interface, Sensor Hub / Data Acquisition, Consumer Robotics Auxiliary Controller, Battery-Powered IoT End Node.
BLDC / PMSM Motor Control
The PIC24FJ32MC101-I/SO's 6-channel MCPWM with complementary outputs and programmable dead-time, combined with the 16 MIPS CPU and 32 KB FLASH, makes it a strong fit for low-voltage 3-phase BLDC and PMSM motor drives. The MCPWM triggers the 10-bit ADC for synchronous current sensing, enabling sensored trapezoidal commutation at up to 50 kHz PWM. The 32 KB program memory holds full state-machine firmware plus sinusoidal LUTs, and the 2 KB RAM accommodates a small sensorless observer. Designers should place shunt resistors and ADC inputs within 10 mm of the MCU to keep sampling noise low.
Recomendado
Small Appliance Motor Control
Compact fan, pump, and white-goods motor-control boards benefit from the PIC24FJ32MC101-I/SO's 20-SOIC small footprint and wide -40 C to +125 C industrial temperature range. The on-chip CTMU enables touch-button user interfaces without external sensing ICs, while the MCPWM drives BLDC motors directly via a small 3-phase inverter. With 32 KB FLASH, designers can integrate capacitive-touch handling, PWM commutation, and a UART-based diagnostic interface on a single chip. The 3.0-3.6 V supply matches a single-cell Li-ion or USB-powered appliance.
Recomendado
LED Lighting Controllers
The PIC24FJ32MC101-I/SO suits dimmable LED drivers and RGBW lighting controllers, where the 6-channel MCPWM drives high-frequency LED current control loops and the 10-bit ADC reads photodiode light sensors for ambient feedback. The CTMU measures small capacitances for capacitive touch dimmers, eliminating mechanical pots. The 32 KB FLASH holds DMX512 or DALI receive stacks in addition to PID closed-loop dimming firmware, and the industrial temperature range supports enclosed luminaire thermal environments. Total BOM cost stays low thanks to integrated peripherals.
Recomendado
Capacitive Touch Sensing Interface
The PIC24FJ32MC101-I/SO's on-chip CTMU (Charge Time Measurement Unit) enables capacitive touch button and slider sensing without dedicated touch ICs, using just the MCU and a few copper pads. The 16 MIPS CPU handles up to 16 touch electrodes with sub-100 ms response times, while the 32 KB FLASH stores sophisticated noise-filtering firmware (oversampling, debounce, gesture recognition). The PPS peripheral pin select simplifies PCB routing by allowing touch channels on any digital I/O pin. Combined with UART/I2C, this makes a compact touch-interface module for IoT devices.
Recomendado
Sensor Hub / Data Acquisition
For low-speed multi-sensor data acquisition nodes, the PIC24FJ32MC101-I/SO offers 2 UART, 1 SPI, 1 I2C, and a 16-channel 10-bit ADC - all driven by the 16 MIPS CPU. The 32 KB FLASH holds Modbus RTU / LIN slave stacks plus custom sensor processing firmware. With -40 C to +125 C operation, the device is suited for industrial sensor hubs in HVAC, building automation, or factory monitoring. Its 3.3 V supply aligns with modern sensor modules, and the 2 KB RAM comfortably buffers Modbus frames and ADC scan results.
Recomendado
Consumer Robotics Auxiliary Controller
Educational and consumer robots use the PIC24FJ32MC101-I/SO as a peripheral controller for brushed DC servos, hobby servos (via PWM), and sensor interfaces. The 5 timers generate up to 5 servo PWM channels, while 2 UARTs bridge to main controllers or Bluetooth modules for telemetry. The CTMU supports line-follow sensors via capacitive measurement, and the 32 KB FLASH accommodates simple navigation algorithms. The wide operating voltage and temperature range make this MCU a flexible auxiliary brain in robotics kits.
Recomendado
Battery-Powered IoT End Node
Low-power IoT end nodes benefit from the PIC24FJ32MC101-I/SO's 3.3V operation and sleep-friendly PIC24F architecture, with multiple low-power modes (Sleep, Idle, Doze) drawing microamp-level quiescent current. The MCU wakes periodically to read sensors over I2C/SPI, transmit over UART, and return to sleep. The 32 KB FLASH holds LoRaWAN or Zigbee MAC layers plus application logic, and the industrial temperature range enables outdoor deployments. PPS allows the I2C bus to be remapped to any pin for PCB layout flexibility.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC24FJ32MC101-I/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC24FJ32MC101-E/SO | PIC24FJ32MC101T-I/SO | PIC24FJ16MC101-I/SO | PIC24FJ16MC102-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (SO) 7.50 mm | 20-SOIC (SO) - same | 20-SOIC (SO) - same | 20-SOIC (SO) - same | 20-SOIC (SO) - same |
| FLASH Memory | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 16 KB (-50%) |
| Data RAM | 2 KB | 2 KB | 2 KB | 1 KB (-50%) | 1 KB (-50%) |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| MCPWM Channels | 6 | 6 | 6 | 6 | 6 |
| CTMU | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +125 C (industrial) | -40 C to +125 C (extended) | -40 C to +125 C (industrial) | -40 C to +125 C (industrial) | -40 C to +125 C (industrial) |
Diferenciadores clave
- On-chip 6-channel MCPWM with hardware dead-time (frente a PIC24FJ32GA102-I/SO (general-purpose 16-bit MCU))
- Integrated CTMU for capacitive touch sensing (frente a PIC24FJ32GB002-I/SS)
- Peripheral Pin Select (PPS) flexibility (frente a PIC24FJ16MC101-I/SO (lower memory variant))
Notas de diseño
The PIC24FJ32MC101-I/SO operates strictly from 3.0 V to 3.6 V; 5 V systems require level translation. Place a 100 nF ceramic decoupling capacitor within 5 mm of VDD (pin 18) and a 10 uF bulk capacitor on the same supply rail. The analog AVDD/AVSS pair (pins 19, 20) must be powered even if the ADC is unused, with its own 100 nF decoupling cap. Use a star-ground topology: connect digital VSS and analog AVSS at a single point near the MCU to avoid ground-loop noise coupling into ADC readings.
Do not leave the MCLR pin (pin 1) floating - it must be tied to VDD via a 10 kohm pull-up resistor to ensure proper reset behaviour. Floating MCLR causes erratic starts and ICSP programming failures. The ICSP programming pins PGED1 (pin 4) and PGEC1 (pin 5) must not be loaded with more than 50 pF of stray capacitance, or programming will fail - keep these traces short and away from switching nodes. Always check the device errata (DS80000490) before finalising the BOM, as some silicon revisions have ADC and PWM bugs.
For motor-control applications, segregate the MCU ground plane from the power-stage ground; join them only at the source of the DC bus (bulk capacitor negative terminal) to prevent high di/dt switching noise from corrupting ADC current-sense readings. Keep shunt-resistor traces to the ADC input differential pair shorter than 20 mm and symmetric to avoid mismatch. Place the MCPWM outputs (PWM1L/PWM1H, PWM2L/PWM2H, PWM3L/PWM3H) routed as matched-length differential pairs to minimise PWM skew into the gate driver.
When using the 10-bit ADC at 500 ksps, source impedance above 5 kohm causes conversion errors due to sample-and-hold settling. Add a small external unity-gain op-amp buffer (such as MCP6001) on high-impedance sensor lines. For CTMU capacitive-touch designs, surround touch pads with a grounded guard ring and connect the shield to an MCU pin configured as a low-impedance output to reduce moisture and ESD interference. Decouple the touch pad RC network with at least 100 nF near the MCU pin.
Información de cumplimiento
RoHS and lead-free per Microchip product page. AEC-Q100 qualified variants available separately under PIC24FJ32MC101-E/SO ordering codes for automotive; the -I grade is industrial temperature only. Halogen-free status not explicitly listed in the verified data - verify with Microchip before declaring.
