PIC24EP256MC202-E/SS - 16-bit 70 MIPS Motor Control MCU 256KB Flash | Microchip
MPN： PIC24EP256MC202-E/SS ✓ 啟用中PIC24EP256MC202-E/SS 概覽
Background Knowledge. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and on-chip peripherals such as timers, ADC, communication controllers, and PWM modules. The PIC24E family is Microchip's 16-bit modified Harvard architecture family positioned between 8-bit PIC16/PIC18 and 32-bit PIC32 in the broader microcontroller taxonomy: 8-bit MCU -> 16-bit MCU (PIC24E/dsPIC33) -> 32-bit MCU (PIC32). This Motor Control variant (MC) adds High-Speed PWM, operational amplifiers, and Quadrature Encoder Interface peripherals that are essential for closed-loop motor control applications, eliminating the need for many external analog components.
Key features include 70 MIPS performance at 3.3V (70 MHz CPU clock), 256 KB on-chip Flash with 16 KB SRAM, integrated high-resolution PWM modules for field-oriented control (FOC), on-chip operational amplifiers that condition motor phase current sense signals, and a 10/12-bit ADC. The device operates across an industrial temperature range suitable for harsh environment motor applications.
The PIC24EP256MC202-E/SS uses Microchip's 16-bit modified Harvard architecture with a 24-bit instruction word optimized for DSP operations. The integrated op-amps directly interface with low-side current shunt resistors in motor drive stages, while the high-speed PWM supports complementary outputs with programmable dead time for safe switching of three-phase inverter bridges.
Typical applications include BLDC motor control, PMSM field-oriented control (FOC), AC induction motor drives, servo control systems, and industrial automation equipment. The -E suffix indicates the Extended (industrial) temperature grade, making this part suited for factory floor and outdoor installations.
When designing with this MCU, ensure the SSOP-28 thermal dissipation path is properly handled. The integrated op-amps require careful PCB layout to avoid noise injection into current sense paths; keep sense traces short and use a 4-layer PCB with a dedicated ground plane.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 PIC24EP256MC202-E/SS — 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： PIC24EP256MC202-E/SS （相同外形與佔位） — 差異在於 ADC, CPU Performance, PWM Channels, Package, Program Memory (Flash).
PIC24EP128MC202-E/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24EP256MC202-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24EP256MC202-H/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24EP256MC202T-E/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24EP128MC202T-E/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC24EP256GP202-E/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24EP256MC202-E/SS 最大額定值與電氣特性
| Core Architecture | PIC24E (16-bit modified Harvard, 24-bit instruction) |
| CPU Performance | 70 MIPS at 3.3V (70 MHz core clock) |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 16 KB |
| 封裝 | 28-pin SSOP |
| Operating Voltage Range | 3.0 V to 3.6 V |
| 工作溫度範圍 | -40C to +125C (Extended grade, -E suffix) |
| PWM Channels | High-Speed PWM with complementary outputs and programmable dead time |
| On-chip Operational Amplifiers | Yes (current sense conditioning) |
| ADC | 10/12-bit successive approximation |
| Quadrature Encoder Interface (QEI) | Yes |
| Communication Peripherals | UART, SPI, I2C (ECAN on selected variants) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
PIC24EP256MC202-E/SS 腳位配置
| 腳位 1 | SDA1/RPG9/PMA0 — I2C1 data or remappable I/O |
| 腳位 2 | SCL1/RPG8/PMA1 — I2C1 clock or remappable I/O |
| 腳位 3 | AN0/CVD0/C1IN0+ — Analog input 0 |
| 腳位 4 | AN1/CVD1/C1IN0- — Analog input 1 |
| 腳位 5 | VREF+/AN2 — ADC voltage reference positive |
| 腳位 6 | VREF-/AN3 — ADC voltage reference negative |
| 腳位 7 | AVDD — Analog power supply |
| 腳位 8 | AVSS — Analog ground |
| 腳位 9 | OSC1/CLKI — Crystal oscillator input |
| 腳位 10 | OSC2/CLKO — Crystal oscillator output |
| 腳位 11 | PWM1H/RP0/RB0 — PWM1 high-side output |
| 腳位 12 | PWM1L/RP1/RB1 — PWM1 low-side output |
| 腳位 13 | PWM2H/RP2/RB2 — PWM2 high-side output |
| 腳位 14 | PWM2L/RP3/RB3 — PWM2 low-side output |
| 腳位 15 | PWM3H/RP4/RB4 — PWM3 high-side output |
| 腳位 16 | PWM3L/RP5/RB5 — PWM3 low-side output |
| 腳位 17 | FLTA1/RP6/RB6 — PWM fault input |
| 腳位 18 | RP7/RB7 — Remappable I/O |
| 腳位 19 | VSS — Digital ground |
| 腳位 20 | VDD — Digital power supply |
| 腳位 21 | QEA1/RP8/RB8 — QEI1 channel A |
| 腳位 22 | QEB1/RP9/RB9 — QEI1 channel B |
| 腳位 23 | INDX1/RP10/RB10 — QEI1 index input |
| 腳位 24 | RP11/RB11 — Remappable I/O |
| 腳位 25 | RP12/RB12 — Remappable I/O |
| 腳位 26 | RP13/RB13 — Remappable I/O |
| 腳位 27 | TDO/RP14/RB14 — JTAG test data output |
| 腳位 28 | TCK/RP15/RB15 — JTAG test clock |
典型應用
PIC24EP256MC202-E/SS 適用於 6 應用s: BLDC and PMSM Motor Control, Industrial Servo and Robotic Drives, HVAC and Refrigeration Compressor Drives, EV and E-Bike Motor Controllers, Industrial Fans, Pumps, and Blowers, Home Appliance Motor Drives.
BLDC and PMSM Motor Control
The PIC24EP256MC202-E/SS is purpose-built for Brushless DC (BLDC) and Permanent Magnet Synchronous Motor (PMSM) field-oriented control. Its 70 MIPS throughput executes Park/Clarke transforms and PI current loops within a single PWM cycle (typically 10-20 kHz), while integrated on-chip op-amps condition low-side shunt current signals directly without external analog stages. High-Speed PWM with complementary outputs and programmable dead time (100 ns resolution) safely drives three-phase inverter bridges using IGBTs or MOSFETs up to several hundred watts. Quadrature Encoder Interface (QEI) accepts rotor position feedback from incremental encoders at up to 100 MHz input frequency.
推薦
Industrial Servo and Robotic Drives
The PIC24EP256MC202-E/SS's combination of 70 MIPS CPU, 256 KB Flash, 16 KB SRAM, and integrated motor-control peripherals makes it well-suited for industrial servo amplifiers and multi-axis robotic drives. The Extended (-40C to +125C) temperature grade ensures reliability in factory-floor environments without active cooling. The on-chip QEI supports up to two incremental encoder inputs, while high-resolution PWM enables sub-degree positioning accuracy in closed-loop position control. The 256 KB Flash is sufficient to store complex motion trajectories, gain-scheduling tables, and field-upgradeable firmware via UART/SPI bootloader.
推薦
HVAC and Refrigeration Compressor Drives
The PIC24EP256MC202-E/SS is widely deployed in variable-speed HVAC compressor drives and refrigeration inverter controllers. Sensorless FOC algorithms fit comfortably within the 70 MIPS budget, while the Extended temperature grade handles compressor compartment heat. The on-chip 12-bit ADC samples motor currents at up to 500 ksps, and the integrated op-amps interface with low-cost shunt resistors. The 256 KB Flash stores application-specific control loops, fault-handling routines, and energy-efficiency lookup tables that adapt compressor speed to cooling demand, reducing power consumption versus fixed-speed compressors.
推薦
EV and E-Bike Motor Controllers
The PIC24EP256MC202-E/SS enables compact traction motor controllers for low-voltage electric vehicles, e-bikes, and e-scooters. The 70 MIPS core handles torque-control loops at 16 kHz, while the integrated op-amps interface directly with phase-current shunts in a 24V-48V battery system. Programmable dead time in the High-Speed PWM module accommodates 600V-rated MOSFET gate drivers like the MCP8024. The Extended -40C to +125C temperature range handles under-hood thermal stress. UART and SPI interfaces link to battery management and telemetry modules.
推薦
Industrial Fans, Pumps, and Blowers
The PIC24EP256MC202-E/SS drives variable-frequency industrial fans, pumps, and blowers where energy savings from variable-speed operation outweigh the cost of a digital controller. The 70 MIPS core runs sensorless or sensored FOC, while the integrated op-amps and QEI eliminate external analog circuitry. The Extended temperature grade supports enclosed motor housings where ambient temperatures can reach 100C. UART/SPI enables integration with Building Management Systems (BMS) for setpoint control, fault telemetry, and predictive maintenance based on current signature analysis.
推薦
Home Appliance Motor Drives
The PIC24EP256MC202-E/SS is used in washing machines, dishwashers, range hoods, and refrigerator compressors where quiet, energy-efficient variable-speed drives enhance product value. The integrated motor-control peripherals reduce BOM cost versus external DSP-based solutions. The 256 KB Flash accommodates country-specific firmware variants and feature differentiators (e.g., different wash cycles). Sensorless FOC algorithms at 70 MIPS achieve low acoustic noise below 35 dB-A by avoiding low-speed torque ripple. UART and SPI interfaces enable Wi-Fi/Bluetooth modules for smart-home connectivity.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24EP256MC202-E/SS — 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 | PIC24EP128MC202-E/SS | PIC24EP256MC202-I/SS | PIC24EP256MC202-H/SS | PIC24EP256MC202T-E/SS | PIC24EP128MC202T-E/SS | PIC24EP256GP202-E/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) |
| CPU Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 256 KB | 128 KB | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| On-chip Op-amps | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | No (general-purpose variant) |
| High-Speed PWM | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Yes (motor-control grade) | Limited (general-purpose variant) |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | 0C to +150C (High-temperature) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) |
主要差異化特點
- On-chip op-amps for current sensing (對比PIC24EP256GP202-E/SS)
- Extended -40C to +125C temperature grade (對比PIC24EP256MC202-I/SS)
- Drop-in pin-compatible 256 KB Flash (對比PIC24EP128MC202-E/SS)
設計說明
The 28-pin SSOP package has a junction-to-ambient thermal resistance (theta_JA) of approximately 80-90 C/W on a 4-layer JEDEC test PCB. At full 70 MIPS CPU throughput and 3.6V supply, the MCU typically dissipates 60-100 mW; well within SSOP-28 capability. For enclosed motor housings reaching 70C ambient, no heatsink is required, but ensure copper pours under the exposed SSOP pad (where applicable) or thermal relief pads to spread heat. Estimated: 100 mW * 85 C/W = 8.5 C rise above ambient, yielding a junction of ~78.5 C at 70 C ambient - safe margin below 125 C.
Keep the current-sense traces from the low-side shunts to the on-chip op-amp inputs (AN0, AN1, AN2) as short as possible (target <10 mm) and route them as a differential pair above a continuous ground plane to reject switching noise from the PWM outputs. Place 100 nF decoupling capacitors on each AVDD/AVSS pair within 2 mm of the pins. Use a 4-layer PCB with a dedicated ground plane and route noisy power traces away from the analog section. The PWM outputs (PWM1H/L, PWM2H/L, PWM3H/L) should have 33 ohm series resistors at the MCU pin to dampen transmission-line ringing.
Do not confuse the MC (Motor Control) variant with the GP (General Purpose) variant: the PIC24EP256GP202-E/SS shares the same 28-SSOP package and 256 KB Flash but lacks the on-chip op-amps and dedicated High-Speed PWM blocks essential for three-phase motor drive. For sensorless FOC operation, configure the QEI inputs only if an incremental encoder is present - sensorless algorithms use BEMF zero-cross detection via the ADC. Verify the operating temperature grade suffix: -E = -40C to +125C (Extended), -I = -40C to +85C (Industrial), -H = 0C to +150C (High-temperature).
合規資訊
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - for automotive applications use the dsPIC33EP256MC202 AEC-Q100 variant or contact Microchip for automotive-grade PIC24E qualification status.
