PIC24FJ32MC102-E/ML - 16-Bit 32KB Flash Motor Control MCU | Microchip
MPN： PIC24FJ32MC102-E/ML ✓ 啟用中PIC24FJ32MC102-E/ML 概覽
A 16-bit microcontroller (MCU) is a microprocessor that processes instructions 16 bits at a time, sitting in the hierarchy between 8-bit MCUs (cost-optimized, simpler control) and 32-bit MCUs (higher performance, more complex applications). Within the broader taxonomy, the PIC24F belongs to the microcontrollers -> embedded controllers -> semiconductor category. The PIC24FJ32MC102 targets cost-sensitive BLDC, PMSM, and stepper motor control applications where the larger 16-bit data path simplifies fractional arithmetic for control loops, and the integrated motor-control peripherals eliminate the need for an external gate driver controller for small motors.
Key features include 21 general-purpose I/O lines, three 16-bit timers, two UART, one SPI, one I2C, a 10-bit ADC with up to 9 channels and 500 ksps conversion rate, and an internal 8 MHz oscillator with PLL support up to 32 MHz. The CTMU enables capacitive touch sensing and precise time-of-flight measurements, while the RTCC supports calendar functions with backup power from a separate VBAT pin. The PPS module routes most digital peripherals to user-selected pins, simplifying PCB layout and BOM.
Typical applications include ceiling fans, RC servo drives, small pumps, white-goods motor controllers, and low-cost BLDC/PMSM sensorless or sensored drives. Industrial uses extend to small appliance inverters and toys. Designers choose the PIC24FJ32MC102 for compact 28-pin motor-control designs that require deterministic PWM, fault protection via comparators, and field-proven PIC24F firmware libraries (motor control, USB, graphics). It is pin-compatible with the PIC24FJ16MC102 (half the Flash) and the PIC24FJ32MC104 (32-pin variants with more peripherals).
直接替換替代品，適用於 PIC24FJ32MC102-E/ML — 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： PIC24FJ32MC102-E/ML （相同外形與佔位） — 差異在於 Package, Core, ADC, CTMU, I/O Pins.
PIC24FJ32MC102-I/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ16MC102-E/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ32MC101-E/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ32MC102-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ64MC102-E/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ32MC102-E/SP
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ32MC102-E/ML 最大額定值與電氣特性
| Core | PIC24F (16-bit RISC) |
| Program Memory (Flash) | 32 KB (11K x 24) |
| Data RAM | 2 KB |
| Performance | 16 MIPS |
| 最大時脈頻率 | 32 MHz (with PLL) |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| 工作溫度範圍 | -40 C to +125 C (Extended, -E suffix) |
| 封裝 | 28-pin QFN (6x6 mm) |
| 安裝類型 | Surface Mount |
| I/O Pins | 21 |
| Motor Control PWMs (MCPWM) | 3 |
| Analog Comparators | 3 |
| CTMU (Charge Time Measurement Unit) | Yes |
| RTCC (Real-Time Clock/Calendar) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| ADC | 10-bit, up to 9 channels, 500 ksps |
| Timers (16-bit) | 3 (T1, T2, T3) |
| UART | 2 |
| SPI | 1 |
| I2C | 1 |
| Internal Oscillator | 8 MHz (with PLL) |
| RoHS 狀態 | Compliant |
PIC24FJ32MC102-E/ML 腳位配置
| 腳位 1 | RA0 — GPIO / analog input AN0 / CVREF- |
| 腳位 2 | RA1 — GPIO / analog input AN1 / CVREF+ |
| 腳位 3 | RA2 — GPIO / analog input AN2 |
| 腳位 4 | RA3 — GPIO / analog input AN3 |
| 腳位 5 | RA4 — GPIO / analog input AN4 |
| 腳位 6 | VDD — Positive supply voltage (3.0-3.6V) |
| 腳位 7 | VSS — Ground reference |
| 腳位 8 | OSCI — External oscillator input / CLKI |
| 腳位 9 | OSCO — External oscillator output / CLKO |
| 腳位 10 | PWM1H — Motor Control PWM 1 high-side output |
| 腳位 11 | PWM1L — Motor Control PWM 1 low-side output |
| 腳位 12 | PWM2H — Motor Control PWM 2 high-side output |
| 腳位 13 | PWM2L — Motor Control PWM 2 low-side output |
| 腳位 14 | PWM3H — Motor Control PWM 3 high-side output |
| 腳位 15 | PWM3L — Motor Control PWM 3 low-side output |
| 腳位 16 | RB0 — GPIO / PGD programming data |
| 腳位 17 | RB1 — GPIO / PGC programming clock |
| 腳位 18 | RB2 — GPIO / analog input AN8 |
| 腳位 19 | RB3 — GPIO / analog input AN9 |
| 腳位 20 | RB4 — GPIO |
| 腳位 21 | RB5 — GPIO |
| 腳位 22 | RB6 — GPIO |
| 腳位 23 | RB7 — GPIO |
| 腳位 24 | RC0 — GPIO |
| 腳位 25 | RC1 — GPIO |
| 腳位 26 | RC2 — GPIO |
| 腳位 27 | VBAT — RTCC backup battery supply |
| 腳位 28 | VSS — Ground reference (QFN exposed pad also) |
典型應用
PIC24FJ32MC102-E/ML 適用於 7 應用s: Ceiling Fan BLDC Motor Control, Small Pump Motor Control (PMSM/BLDC), RC Servo and Robotics Drives, White Goods Motor Controllers (Washing Machine Pumps, Dishwashers), Capacitive Touch User Interfaces, Battery-Powered Toys and Personal Mobility, Industrial Low-Voltage 24V/36V Drives.
Ceiling Fan BLDC Motor Control
The PIC24FJ32MC102 is a strong fit for ceiling fan BLDC motor controllers because its three Motor Control PWMs (MCPWM) directly drive a 3-phase inverter bridge at switching frequencies up to 16 kHz, while three on-chip analog comparators perform back-EMF zero-crossing detection for sensorless commutation. The 16 MIPS performance is sufficient for PI speed loops, and the 32KB Flash holds the motor-control state machine plus Microchip's AN1078 sensorless BLDC library. In a typical design, the MCU sits on a 3.3V rail with three N-FETs driving the motor phases, an inline shunt for current sensing, and a 10uF decoupling cap on VDD. Compared with a discrete 8-bit MCU plus external gate logic, this single-chip solution reduces BOM and PCB area for cost-sensitive white-goods designs.
推薦
Small Pump Motor Control (PMSM/BLDC)
For small water pumps and circulation pumps using PMSM or BLDC motors, the PIC24FJ32MC102-E/ML provides the integrated MCPWM, comparators, and CTMU needed for sensorless FOC or trapezoidal commutation. The CTMU enables precise time-of-flight measurement for liquid level detection in the same MCU without external ICs, while the RTCC schedules pump on/off cycles to reduce energy waste. The 32KB Flash holds field-oriented control (FOC) libraries from Microchip with margin for application customization. Compared with the PIC24FJ16MC102, this part doubles code space, allowing more sophisticated pump algorithms and additional diagnostics.
推薦
RC Servo and Robotics Drives
The PIC24FJ32MC102-E/ML is well matched to RC servo and small robotics drives that require PWM generation with high update rates and low-latency loop control. The three 16-bit timers can each generate independent PWM channels for up to three servos from one MCU, and the 10-bit ADC at 500 ksps reads potentiometer or sensor inputs for closed-loop position control. The PIC24F core's 16-bit arithmetic simplifies fractional math in PID loops, and the 2KB RAM comfortably holds the runtime state for 3-axis control. Designers can use the same MCPWM infrastructure for brushed DC motors, stepper drives, or hobby-grade BLDC motors, with Microchip's free MPLAB X IDE libraries reducing firmware effort.
推薦
White Goods Motor Controllers (Washing Machine Pumps, Dishwashers)
White goods such as washing machine drain pumps and dishwasher circulation pumps benefit from the PIC24FJ32MC102-E/ML's extended temperature range (-40 C to +125 C), its integrated motor-control peripherals, and its long-life industrial-grade Flash. The MCPWM drives the 3-phase bridge, the comparators handle current limit and overcurrent protection, and the CTMU can be used for capacitive water level detection, eliminating mechanical pressure switches. The 32KB Flash holds application code, fault logs, and self-test routines. Compared with a discrete MCU plus external motor-control ASIC, the integrated approach reduces board area, BOM cost, and EMI complexity in appliance designs.
推薦
Capacitive Touch User Interfaces
The PIC24FJ32MC102-E/ML's CTMU (Charge Time Measurement Unit) enables reliable capacitive touch sensing on up to 16 channels via the ADC and PPS routing, eliminating the need for a dedicated touch controller IC. Designers can implement touch buttons, sliders, and proximity sensors directly on the motor-control PCB, sharing the MCU with the main motor-control loop. The 32KB Flash holds both the touch firmware library and the motor-control code, and the 16 MIPS performance allows 10 ms touch-scan rates without disturbing motor-control timing. Typical applications include touch panels on washing machines, induction cooktops, and smart appliances.
推薦
Battery-Powered Toys and Personal Mobility
For battery-powered toys, e-bike dashboard motor controllers, and personal-mobility scooter drives, the PIC24FJ32MC102-E/ML delivers low-power operation thanks to its Sleep mode with RTCC running from VBAT, and its 16 MIPS active-mode performance for responsive motor control. The integrated RTCC enables wake-up alarms and scheduling, while the MCPWM and comparators drive small BLDC motors used in propellers or traction. The 28-pin QFN (6x6) package fits on small, dense PCBs typical of toys and personal-mobility devices. Designers can re-use Microchip's motor-control libraries to shorten time-to-market for new SKUs.
推薦
Industrial Low-Voltage 24V/36V Drives
The PIC24FJ32MC102-E/ML operates from a regulated 3.3V rail that can be derived from industrial 24V or 36V buses via a step-down regulator, and its extended temperature grade (-40 C to +125 C) is suitable for industrial cabinet environments. Its MCPWM, comparators, and 10-bit ADC handle small industrial drives such as conveyor diverters, packaging machine rollers, and small fans. The PIC24F core's deterministic interrupt latency and 16-bit arithmetic simplify real-time control loops, while the PPS peripheral pin select simplifies PCB routing in dense industrial designs. Industrial designers benefit from Microchip's longevity program that commits to long-term availability for embedded microcontrollers.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ32MC102-E/ML — 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 | PIC24FJ32MC102-I/ML | PIC24FJ16MC102-E/ML | PIC24FJ64MC102-E/ML | PIC24FJ32MC101-E/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6) | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same |
| Flash | 32 KB | 32 KB (same) | 16 KB (-50%) | 64 KB (+100%) | 32 KB (same) |
| MCPWM Outputs | 3 (H/L pairs) | 3 (same) | 3 (same) | 3 (same) | 3 (same) |
| Analog Comparators | 3 | 3 (same) | 3 (same) | 3 (same) | 3 (same) |
| Performance | 16 MIPS @ 32 MHz | 16 MIPS (same) | 16 MIPS (same) | 16 MIPS (same) | 16 MIPS (same) |
| Temperature Range | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended, same) | -40 C to +125 C (Extended, same) | -40 C to +125 C (Extended, same) |
| Q1 / Automotive Grade | No | No | No | No | No |
主要差異化特點
- Integrated motor-control peripherals (3x MCPWM + 3 comparators + CTMU) in a 28-pin QFN (對比PIC24FJ16GA004-E/PT)
- Peripheral Pin Select (PPS) for flexible I/O mapping (對比PIC24FJ16MC101-E/SS)
- CTMU enables capacitive touch and precise time-of-flight in the same MCU (對比PIC24FJ32GA102-I/SO)
設計說明
The PIC24FJ32MC102-E/ML requires a regulated 3.0V to 3.6V supply on VDD and VDDC pins. Per the Microchip datasheet, place a 10uF bulk capacitor close to VDD and a 0.1uF ceramic decoupling cap within 5 mm of each VDD pin. Use a low-ESR ceramic such as X7R 10uF to handle MCPWM switching transients. The VBAT pin powers the RTCC when VDD is absent; if RTCC backup is unused, tie VBAT to VDD. A 3.3V LDO such as MCP1700-33 is recommended for stable operation from 5V or higher rails.
The 28-pin QFN (6x6) package requires a properly designed land pattern following the Microchip package outline. The exposed thermal pad on the underside MUST be soldered to a continuous ground pour for thermal dissipation and electrical ground; use thermal vias in a 3x3 array under the EP to improve heat transfer. Place the ICSP programming header (PGECx/PGEDx on RB1/RB0) with a 0.1 inch pitch 2x5 header to enable in-circuit programming. Keep the MCPWM output traces short and direct to the gate driver to minimize ringing.
A common pitfall when designing with the PIC24FJ32MC102 is misconfiguring the Peripheral Pin Select (PPS) registers. PPS must be unlocked, configured, then locked back; an unlocked PPS may cause peripherals to malfunction on a warm reset. Another pitfall is using the wrong temperature grade for the application: the -E (Extended) suffix covers -40 C to +125 C, while the -I (Industrial) suffix covers -40 C to +85 C. Choosing the -I grade in a +100 C motor application will fail qualification. Finally, ensure the ICSP pins (PGECx/PGEDx) are not driven by external circuitry during programming or the device may fail to enter programming mode.
The MCPWM outputs can produce fast switching edges (10-50 ns) that inject switching noise into analog inputs. To preserve the 10-bit ADC accuracy, separate the analog and power grounds, and use a ground cut to keep high-di/dt currents from the analog section. Add an RC snubber (10 ohm + 1 nF) on each MCPWM output near the gate driver if ringing exceeds 1 V. CTMU timing accuracy depends on a clean VDD; if the CTMU is used for capacitive touch, isolate its analog pins from high-impedance signal traces to prevent capacitive coupling.
合規資訊
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive motor-control applications, consider dsPIC33 variants. Extended temperature grade (-E suffix) covers -40 C to +125 C industrial use cases.
