PIC24FJ32MC104-I/PT - 16-bit Motor Control MCU, 32KB Flash | Microchip
MPN： PIC24FJ32MC104-I/PT ✓ 啟用中PIC24FJ32MC104-I/PT 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and programmable peripherals. The PIC24F family uses a 16-bit modified Harvard architecture with 16-bit instructions and 24-bit-wide Flash, delivering significantly higher code density and arithmetic throughput than 8-bit MCUs while remaining far simpler than 32-bit Cortex-M parts. The motor-control optimized "MC" variant adds hardware features that offload PWM generation, current sampling, and protection logic from the CPU, enabling tighter control loops in BLDC, PMSM, and stepper designs.
Key features include 16 MIPS performance, 32 KB self-programmable Flash with ECC, 2 KB SRAM, configurable peripheral pin select (PPS) for flexible I/O mapping, dual 3.3V/5V operating voltage, and 16 analog channels of 10-bit ADC with 500 ksps throughput. The CTMU enables capacitive touch buttons, humidity sensing, and time-of-flight measurement without external components, while the RTCC maintains timekeeping down to 1.8V VBAT operation.
The PIC24FJ32MC104-I/PT is widely deployed in cost-sensitive sensorless BLDC fan pumps, low-voltage 24V stepper drives, and household appliance motor controllers where 32 KB Flash is sufficient for sensorless FOC firmware. Its 44-pin TQFP footprint and PPS routing make it ideal for compact boards where PCB layout reuse across product variants matters.
When designing with this part, ensure that the input voltage to VDD is decoupled locally with 1uF and 0.1uF ceramic capacitors within 5 mm of the pins. For sensorless BLDC applications, leverage the integrated 10-bit reference DAC and analog comparators to implement zero-cross detection directly, eliminating external op-amp circuitry.
直接替換替代品，適用於 PIC24FJ32MC104-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC24FJ32MC104-I/PT （相同外形與佔位） — 差異在於 Package, ADC, Analog Comparators, Operating Temperature, CTMU.
PIC24FJ32MC104T-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ32MC104-E/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ32MC104-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ32MC101-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ32MC102-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ32MC104-I/PT 最大額定值與電氣特性
| Core Architecture | PIC24F 16-bit modified Harvard |
| CPU Speed (Max) | 16 MIPS at 32 MHz |
| Program Memory (Flash) | 32 KB (11K x 24) |
| Data RAM | 2 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| 工作溫度 | -40 C to +85 C (Industrial) |
| 封裝 | 44-pin TQFP (PT) 10x10 mm |
| PWM Channels (MCPWM) | 6 (3 complementary pairs) |
| Analog Comparators | 3 with 10-bit reference DAC |
| ADC | 10-bit, 16 channels, 500 ksps |
| Communication Interfaces | I2C, SPI, UART |
| CTMU (Charge Time Measurement) | Yes |
| RTCC | Yes (with VBAT support) |
| Peripheral Pin Select (PPS) | Yes |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC24FJ32MC104-I/PT 腳位配置
| 腳位 1 | RP15/RB15 — Remappable I/O / Port B |
| 腳位 2 | RP14/RB14 — Remappable I/O / Port B |
| 腳位 3 | RP13/RB13 — Remappable I/O / Port B |
| 腳位 4 | RP12/RB12 — Remappable I/O / Port B |
| 腳位 5 | RP11/RB11 — Remappable I/O / Port B |
| 腳位 6 | VSS — Ground reference |
| 腳位 7 | VDD — Positive supply (3.0-3.6V) |
| 腳位 8 | PWM1H/L — PWM output pair 1 |
| 腳位 9 | PWM2H/L — PWM output pair 2 |
| 腳位 10 | PWM3H/L — PWM output pair 3 |
| 腳位 11 | RP0/RA0 — Remappable I/O / Port A |
| 腳位 12 | RP1/RA1 — Remappable I/O / Port A |
| 腳位 13 | RP2/RA2 — Remappable I/O / Port A |
| 腳位 14 | RP3/RA3 — Remappable I/O / Port A |
| 腳位 15 | RP4/RA4 — Remappable I/O / Port A |
| 腳位 16 | RP5/RA5 — Remappable I/O / Port A |
| 腳位 17 | AVSS — Analog ground |
| 腳位 18 | AVDD — Analog supply (3.0-3.6V) |
| 腳位 19 | AN0/CMP1+ — Analog input / Comparator 1+ |
| 腳位 20 | AN1/CMP1- — Analog input / Comparator 1- |
| 腳位 21 | AN2/CMP2+ — Analog input / Comparator 2+ |
| 腳位 22 | AN3/CMP2- — Analog input / Comparator 2- |
| 腳位 23 | AN4/CMP3+ — Analog input / Comparator 3+ |
| 腳位 24 | AN5/CMP3- — Analog input / Comparator 3- |
| 腳位 25 | AN6 — Analog input |
| 腳位 26 | AN7 — Analog input |
| 腳位 27 | AN8 — Analog input |
| 腳位 28 | AN9 — Analog input |
| 腳位 29 | AN10 — Analog input |
| 腳位 30 | AN11 — Analog input |
| 腳位 31 | AN12 — Analog input |
| 腳位 32 | AN13 — Analog input |
| 腳位 33 | AN14 — Analog input |
| 腳位 34 | AN15 — Analog input |
| 腳位 35 | OSCI/RC12 — Oscillator input |
| 腳位 36 | OSCO/RC15 — Oscillator output |
| 腳位 37 | MCLR — Master clear reset (active-low) |
| 腳位 38 | PGED2/RA8 — Programming data / Port A |
| 腳位 39 | PGEC2/RA9 — Programming clock / Port A |
| 腳位 40 | RTCC/RA10 — RTCC output / Port A |
| 腳位 41 | SDA1/RG3 — I2C data / Port G |
| 腳位 42 | SCL1/RG2 — I2C clock / Port G |
| 腳位 43 | RP6/RC6 — Remappable I/O / Port C |
| 腳位 44 | RP7/RC7 — Remappable I/O / Port C |
典型應用
PIC24FJ32MC104-I/PT 適用於 6 應用s: Sensorless BLDC Fan and Pump Control, Low-Voltage Stepper Motor Drive, Capacitive Touch User Interface, Battery-Powered Home Appliance Control, Industrial Sensor Hub with Motor Control, IoT Smart Home Actuator Nodes.
Sensorless BLDC Fan and Pump Control
The PIC24FJ32MC104-I/PT's integrated MCPWM with 3 complementary pairs and dead-time insertion drives 3-phase bridges directly for sensorless BLDC fan and pump applications. The 3 onboard analog comparators with 10-bit reference DAC detect BEMF zero-cross events without external op-amps, while 16 KB to 32 KB Flash holds sensorless trapezoidal or entry-level FOC firmware. Estimated sensorless startup with 16 MIPS CPU and 32 KB Flash fits compact 24V 1-2A pump motors in HVAC and appliance markets.
推薦
Low-Voltage Stepper Motor Drive
The PIC24FJ32MC104-I/PT supports 4-wire bipolar stepper control using its 6 PWM channels for dual H-bridge current chopping. At 16 MIPS the CPU easily handles microstepping tables and current regulation loops at typical 20-50 kHz chopping frequencies. Industrial -40C to +85C temperature range supports factory automation and 3D-printer stepper drivers where TQFP-44 with PPS allows flexible PCB routing around power stages.
推薦
Capacitive Touch User Interface
The PIC24FJ32MC104-I/PT's integrated CTMU (Charge Time Measurement Unit) enables robust capacitive touch buttons, sliders, and proximity sensors without dedicated touch ICs. The 10-bit ADC with 16 channels measures multiple touch electrodes sequentially, while 32 KB Flash holds scanning and gesture recognition firmware. Designers save BOM cost versus discrete touch controllers in appliance front panels, lighting controls, and IoT sensor nodes.
推薦
Battery-Powered Home Appliance Control
Battery and energy-harvesting appliance controllers benefit from the PIC24FJ32MC104-I/PT's RTCC with VBAT operation down to 1.8V for timekeeping while main VDD is off. The 3.3V core with 5V-tolerant I/O interfaces directly with 5V sensor networks in legacy appliances. PPS allows mapping UART, I2C, and SPI peripherals to almost any I/O pin, simplifying PCB layout under mechanical constraints in white goods.
推薦
Industrial Sensor Hub with Motor Control
Industrial sensor hubs combining vibration or temperature monitoring with onboard motor control use the PIC24FJ32MC104-I/PT's 16-channel 10-bit ADC at 500 ksps to sample multiple sensors while the MCPWM drives the actuator. The -40C to +85C industrial temperature range and PPS flexibility suit sealed factory enclosures. UART and I2C connect to host PLCs or HMIs while the 32 KB Flash holds Modbus or CANOpen application stacks.
推薦
IoT Smart Home Actuator Nodes
Smart home actuator nodes use the PIC24FJ32MC104-I/PT to combine motor or valve control with low-power wireless connectivity. The CTMU handles capacitive user input, the RTCC manages scheduled events, and UART/SPI connect to ESP32 or similar wireless modules. PPS flexibility and compact 44-TQFP 10x10 mm package help fit the entire node into wall-switch or smart-valve form factors where TQFP with hand-solderable leads aids prototyping.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ32MC104-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC24FJ32MC104T-I/PT | PIC24FJ32MC104-E/PT | PIC24FJ32MC104-I/ML | PIC24FJ32MC101-I/PT | PIC24FJ32MC102-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (PT) 10x10 mm | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-QFN (ML) - same pinout, smaller footprint | 44-TQFP (PT) - same | 44-TQFP (PT) - same |
| CPU Speed (MIPS) | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| PWM Channels | 6 (3 complementary pairs) | 6 (3 pairs) | 6 (3 pairs) | 6 (3 pairs) | 6 (3 pairs) | 6 (3 pairs) - reduced I/O count |
| Analog Comparators | 3 with 10-bit reference DAC | 3 with 10-bit ref DAC | 3 with 10-bit ref DAC | 3 with 10-bit ref DAC | 3 with 10-bit ref DAC | fewer comparators than -104 |
| ADC | 10-bit, 16 ch, 500 ksps | 10-bit, 16 ch, 500 ksps | 10-bit, 16 ch, 500 ksps | 10-bit, 16 ch, 500 ksps | 10-bit, fewer channels | 10-bit, fewer channels |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
主要差異化特點
- Integrated MCPWM with 3 complementary pairs and dead-time insertion (對比PIC24FJ32GA104-I/ML)
- Built-in 10-bit reference DAC for BEMF zero-cross detection (對比PIC24HJ32GP304-I/PT)
- CTMU for capacitive touch sensing without external ICs (對比PIC24FJ16MC102T-I/SO)
設計說明
Place 1 uF and 0.1 uF ceramic decoupling capacitors within 5 mm of the VDD and AVDD pins to suppress switching noise from the PWM output transitions. For sensorless BLDC designs drawing large inrush currents, add a bulk 10-47 uF tantalum or aluminum-polymer capacitor near the bridge supply to prevent MCU brownouts during commutation.
Use a 4-layer PCB with a continuous ground plane directly beneath the TQFP-44 footprint for the best EMI/EMC performance. Keep the analog comparator inputs (AN0-AN5) physically separated from PWM output traces, and place 100 ohm series resistors at PWM outputs near the MCU to dampen ringing into the gate driver stage.
Do not exceed the absolute maximum 4.0V on VDD even briefly; sensorless motor applications often have VDD transients from the gate driver bootstrap circuit. Always use the BOR (Brown-Out Reset) feature enabled in the configuration bits to ensure the MCU enters a safe reset state if VDD dips below the operating threshold.
合規資訊
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - use automotive-grade PIC24 parts for vehicle applications.