PIC24EP32MC204-I/ML - 70 MIPS 32KB Flash Motor Control MCU | Microchip
料号： PIC24EP32MC204-I/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.98 | $2.98 |
| 10 | $2.79 | $27.90 |
| 100 | $2.51 | $251.00 |
| 500 | $2.22 | $1,110.00 |
| 1,000 | $1.98 | $1,980.00 |
PIC24EP32MC204-I/ML 概述
A 16-bit microcontroller (MCU) is a programmable processor core with 16-bit data paths and instruction set, optimized for embedded control tasks requiring deterministic real-time behavior and moderate code density. The PIC24E family extends this with DSP-like instructions (MAC, bit-reverse addressing), hardware multiply, and 70 MIPS core throughput, fitting between classical 16-bit controllers (PIC24F) and full DSPs (dsPIC33). Motor-control MCUs add specialized peripherals: high-resolution PWM, op-amps to sense phase currents, analog comparators for back-EMF and fault detection, and quadrature encoder interfaces. The hierarchy runs: 16-bit MCU > PIC24E > motor-control variant (PIC24EP...MC...).
Key features include six 16-bit PWM outputs with 7.14 ns resolution (at 70 MIPS), four on-chip operational amplifiers configurable for current sensing, three analog comparators with 20 ns response, a 12-bit ADC at 500 ksps with up to 13 channels, and a Peripheral Trigger Generator (PTG) that synchronizes complex timing sequences. The 44-QFN (8x8 mm) exposed-pad package gives a low thermal resistance suitable for closed-loop FOC field-weakening drives up to several hundred watts. Integrated op-amps remove the external sense amplifiers typically required for BLDC or PMSM current-mode control, saving PCB area and BOM cost.
Architecturally, the PIC24EP32MC204 uses an enhanced Harvard bus with separate program and data paths, a hardware 17-bit x 17-bit multiplier, and a 16-bit working register array. The on-chip op-amps tie directly to the ADC sample-and-hold, reducing sample-skew errors in three-shunt current reconstruction. The PTG coordinates PWM-ADC timing without CPU intervention, achieving deterministic current-loop sampling at sub-microsecond jitter - critical for sinusoidal and field-oriented control loops.
Typical applications include sensorless and sensored BLDC/PMSM motor drives (fans, pumps, e-bikes, drones), field-oriented control of three-phase inverters, stepper and DC servo position loops, and low-power digital power conversion. Industrial -40C to +85C operation supports factory automation, white goods, and HVAC blower controllers.
When designing, route the PCB exposed pad directly under the MCU to a top-layer copper pour (at least 25 mm^2) to dissipate the QFN heat. Keep analog op-amp inputs and PWM outputs short and symmetric. Use the PTG to trigger ADC sampling mid-PWM pulse to avoid switching transients corrupting current readings.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC24EP32MC204-I/ML ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC24EP32MC204-I/ML （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Core Architecture, PWM Channels, Package.
快速对比工具——选择替代料号进行并排对比：
PIC24EP32MC204-E/ML
✅ 直接替换✓ 有现货
$4.21 / 个
查看数据手册 →PIC24EP32MC204T-I/ML
✅ 直接替换✓ 有现货
$3.22 / 个
查看数据手册 →PIC24EP64MC204-I/ML
✅ 直接替换✓ 有现货
$4.85 / 个
查看数据手册 →PIC24EP128MC204-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC24EP256MC204-I/ML
✅ 直接替换✓ 有现货
$4.4 / 个
查看数据手册 →PIC24EP32GP204-I/ML
✅ 直接替换✓ 有现货
$2.95 / 个
查看数据手册 →PIC24EP32MC204-I/ML 最大额定值与电气特性
| Core Architecture | PIC24E (16-bit enhanced Harvard) |
| Maximum CPU Speed | 70 MIPS at 60 MHz |
| Program Flash Memory | 32 KB (10.7K x 24 instructions) |
| RAM | 4 KB |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| 工作温度 | -40 C to +85 C (Industrial) |
| PWM Outputs | 6 channels, 16-bit, 7.14 ns resolution |
| On-Chip Operational Amplifiers | 4 (configurable for current sense) |
| Analog Comparators | 3 with 20 ns response |
| ADC | 12-bit, 500 ksps, up to 13 channels |
| 封装 | 44-pin QFN (8x8 mm) with exposed pad |
| 安装类型 | Surface Mount |
| Peripheral Trigger Generator (PTG) | Yes |
| Communication Interfaces | UART, SPI, I2C, CAN (ECAN) |
| RoHS 状态 | Compliant |
PIC24EP32MC204-I/ML 引脚配置
| 引脚 1 | AN0/RA0 — Analog input 0 / GPIO RA0 |
| 引脚 2 | AN1/RA1 — Analog input 1 / GPIO RA1 |
| 引脚 3 | AN2/RA2 — Analog input 2 / GPIO RA2 |
| 引脚 4 | AN3/RA3 — Analog input 3 / GPIO RA3 |
| 引脚 5 | AN4/RA4 — Analog input 4 / GPIO RA4 |
| 引脚 6 | AVDD — Analog supply voltage |
| 引脚 7 | AVSS — Analog ground |
| 引脚 8 | VREF+ — ADC voltage reference positive |
| 引脚 9 | VREF- — ADC voltage reference negative |
| 引脚 10 | AN5/RB0 — Analog input 5 / GPIO RB0 |
| 引脚 11 | AN6/RB1 — Analog input 6 / GPIO RB1 |
| 引脚 12 | AN7/RB2 — Analog input 7 / GPIO RB2 |
| 引脚 13 | AN8/RB3 — Analog input 8 / GPIO RB3 |
| 引脚 14 | AN9/RB4 — Analog input 9 / GPIO RB4 |
| 引脚 15 | AN10/RB5 — Analog input 10 / GPIO RB5 |
| 引脚 16 | AN11/RB6 — Analog input 11 / GPIO RB6 |
| 引脚 17 | AN12/RB7 — Analog input 12 / GPIO RB7 |
| 引脚 18 | VDD — Digital supply voltage |
| 引脚 19 | VSS — Digital ground |
| 引脚 20 | RC0 — GPIO / PWM1H |
| 引脚 21 | RC1 — GPIO / PWM1L |
| 引脚 22 | RC2 — GPIO / PWM2H |
| 引脚 23 | RC3 — GPIO / PWM2L |
| 引脚 24 | RC4 — GPIO / PWM3H |
| 引脚 25 | RC5 — GPIO / PWM3L |
| 引脚 26 | RC6 — GPIO |
| 引脚 27 | RC7 — GPIO |
| 引脚 28 | RD0 — GPIO |
| 引脚 29 | RD1 — GPIO |
| 引脚 30 | RD2 — GPIO |
| 引脚 31 | RD3 — GPIO |
| 引脚 32 | RD4 — GPIO |
| 引脚 33 | RD5 — GPIO |
| 引脚 34 | RD6 — GPIO |
| 引脚 35 | RD7 — GPIO |
| 引脚 36 | RE0 — GPIO |
| 引脚 37 | RE1 — GPIO |
| 引脚 38 | RE2 — GPIO |
| 引脚 39 | RE3 — GPIO |
| 引脚 40 | RE4 — GPIO |
| 引脚 41 | RE5 — GPIO |
| 引脚 42 | MCLR — Master Clear / Reset |
| 引脚 43 | OSC1 — Crystal oscillator input |
| 引脚 44 | OSC2 — Crystal oscillator output |
典型应用
PIC24EP32MC204-I/ML 适用于 7 应用s: Sensored BLDC Motor Drive, Sensorless PMSM Field-Oriented Control, Industrial Fan and Pump Controller, Robotics Servo and CNC Drive, E-Bike and E-Scooter Motor Controller, Drone and UAV Electronic Speed Controller, Industrial Stepper and DC Servo Control.
Sensored BLDC Motor Drive
The PIC24EP32MC204-I/ML is purpose-built for sensored three-phase BLDC motor drives. Its 4 on-chip op-amps directly amplify the three shunt-resistor phase currents without external amplifier ICs, while the 6-channel 16-bit PWM with 7.14 ns resolution produces sub-audible torque ripple. The PTG triggers ADC sampling mid-PWM at the switching period, eliminating sample-skew errors and enabling deterministic current-loop control. At 70 MIPS the closed-loop FOC update rate easily reaches 32 kHz, which is well within the bandwidth needed for sinusoidal commutation up to several thousand RPM. The integrated CAN/ECAN peripheral also allows multi-axis industrial drives to network without an external transceiver MCU.
推荐
Sensorless PMSM Field-Oriented Control
Sensorless PMSM / BLDC field-oriented control (FOC) is the highest-performance use of the PIC24EP32MC204-I/ML. The 70 MIPS core runs Park/Clarke transforms, SMO observers, and field-weakening calculations in real time, while the on-chip op-amps and comparators handle back-EMF zero-crossing detection for startup synchronization. The 32 KB Flash is sufficient for a complete sensorless FOC library (typical code footprint 20-28 KB). For higher-power or higher-speed PMSMs exceeding 60,000 RPM, the related dsPIC33CK series is recommended; for sub-10 kW industrial PMSM drives the PIC24EP32MC204-I/ML hits the sweet spot of capability vs cost.
推荐
Industrial Fan and Pump Controller
Three-phase industrial fans, pumps, and compressors benefit directly from the PIC24EP32MC204-I/ML's integrated peripherals. Closed-loop FOC reduces acoustic noise by 5 to 10 dB versus six-step trapezoidal commutation, while the -40 to +85 C industrial operating range handles factory-floor temperature. The 12-bit 500 ksps ADC monitors motor current, supply voltage, and temperature simultaneously through the PTG-triggered scan sequence. The 44-QFN (8x8 mm) package footprint keeps the entire controller (MCU + 3-phase gate driver + CAN) inside a 25 mm x 25 mm PCB area - ideal for cost-sensitive HVAC and white-goods designs.
推荐
Robotics Servo and CNC Drive
In robotics servo drives and CNC spindle/motor amplifiers, the PIC24EP32MC204-I/ML handles the high-bandwidth current loop while an external Cortex-M coprocessor handles trajectory planning. The 6-channel PWM drives the three-phase power stage with complementary outputs and dead-band insertion; the integrated op-amps sense three-shunt phase currents directly into the on-chip 12-bit ADC. Quadrature encoder interface on selected pins gives precision position feedback for closed-loop position control up to 50,000 counts per second. Industrial -40 to +85 C rating and CAN networking simplify multi-axis robotic arms.
推荐
E-Bike and E-Scooter Motor Controller
E-bike hub-motor and e-scooter controllers are a major commercial application for the PIC24EP32MC204-I/ML. Its integrated op-amps eliminate the discrete current-sense amplifiers normally required for 6 to 15 A hub drives, and the 70 MIPS core runs sensorless or Hall-sensored FOC at 24 to 48 V battery rails with sub-percent torque ripple. The industrial -40 to +85 C rating handles outdoor and weather-exposed installations, while the CAN/ECAN bus interconnects battery management, display, and throttle units. The 32 KB Flash and 4 KB RAM fit a complete FOC stack with torque-assist ramp profiling within budget.
推荐
Drone and UAV Electronic Speed Controller
Drone ESCs up to 30 A continuous demand fast PWM switching and compact PCB area, both delivered by the PIC24EP32MC204-I/ML. The 44-QFN (8x8 mm) package with exposed thermal pad fits inside a 4-in-1 ESC PCB alongside the gate driver. Six 16-bit PWM channels drive the three-phase half-bridge with 7.14 ns edge resolution, achieving 24 kHz sine-FOC with no audible noise. The integrated op-amps directly read low-side shunt currents, removing two external amplifier packages per ESC. While production drone ESCs typically use dsPIC33CK for cost, this MCU is well-suited to higher-end cinematography and industrial UAV drives.
推荐
Industrial Stepper and DC Servo Control
Two-phase stepper motors and brushed/brushless DC servos also leverage the PIC24EP32MC204-I/ML's PWM and op-amp peripherals. Stepper drives use the 16-bit PWM as the microstepping current reference; the on-chip op-amps amplify the H-bridge shunt currents directly into the 12-bit ADC. Closed-loop current control with microstepping eliminates low-speed resonance and reduces audible noise. The integrated CAN/ECAN allows multi-axis CNC retrofit designs to replace steppers with closed-loop servos without changing the upstream motion controller bus.
推荐
推荐产品汇总
工程参考数据： PIC24EP32MC204-I/ML ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC24EP32MC204-E/ML | PIC24EP64MC204-I/ML | PIC24EP128MC204-I/ML | PIC24EP256MC204-I/ML | PIC24EP32GP204-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Flash Memory | 32 KB | 32 KB | 64 KB | 128 KB | 256 KB | 32 KB |
| RAM | 4 KB | 4 KB | 8 KB | 16 KB | 32 KB | 4 KB |
| Maximum CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| On-Chip Op-Amps | 4 | 4 | 4 | 4 | 4 | 0 (general-purpose) |
| Operating Temperature | -40 to +85 C (Industrial) | -40 to +125 C (Extended) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) |
| Motor Control Peripherals | Yes (PWM + Op-Amp + Comparator + PTG) | Yes | Yes | Yes | Yes | No (general-purpose) |
关键差异点
- On-chip operational amplifiers for current sensing （对比 PIC24EP32GP204-I/ML)
- Peripheral Trigger Generator (PTG) for hardware-timed ADC sampling （对比 PIC24EP32MC202-I/SP (28-pin variant))
- Drop-in scalable Flash variants （对比 PIC24EP32MC202-I/SP (different package))
设计说明
Estimated: At 70 MIPS, VDD = 3.3 V, typical 5 mA/MIPS active current, total power dissipation at full peripheral load is approximately 165 mW (1.16 W peak with all peripherals active). The 44-QFN (8x8 mm) exposed pad has theta_JA around 25 C/W on a 4-layer JEDEC EIA/JESD51 1 oz PCB, giving 4.1 C rise at 165 mW. Solder the exposed pad directly to a top-layer copper pour (at least 25 mm^2) with 4 thermal vias; omitting this increases junction temperature rise to ~16 C at 165 mW and triggers thermal shutdown risk above 0 C ambient.
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of every VDD/VSS pin pair (pins 18/19 and 6/7), plus a 10 uF bulk capacitor on AVDD. Keep the analog op-amp input traces (AN0-AN5) routed as short differential pairs with ground shielding, and keep PWM traces (RC0-RC5) symmetric with matched lengths to avoid current imbalance. Place the crystal (or external clock source) within 5 mm of OSC1/OSC2 with guard-ring ground to minimize EMI.
Configure the PTG to trigger ADC sampling at the PWM center-of-pulse, not at the PWM edge, to avoid sampling switching transients. The on-chip op-amps must have their bandwidth set appropriately for current sense (typically 1 MHz GBP) - default configuration enables them as general-purpose and requires firmware setup in the DAC1 module. Avoid floating analog inputs on AN0-AN12 during ADC scans; unused pins should be configured as digital outputs and driven low to prevent shoot-through current in the input ESD structure.
When driving a three-phase power stage, dead-band insertion (typically 200 ns to 1 us) in the PWM module prevents shoot-through across the high-side and low-side FETs. Use the Complementary PWM mode (PMCONbits.PMOD = 1) and configure the PWM override bits to disable all six outputs during fault (overcurrent detected by internal comparator). Traces between RC0-RC5 PWM outputs and the gate driver should be 50 ohm controlled-impedance and no longer than 25 mm to minimize ringing.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade MCU. For AEC-Q100 qualified motor-control MCUs see the dsPIC33CK automotive family.
