PIC24EP256MC202T-I/SS - 70 MIPS 256KB Flash Motor MCU | Microchip
料号： PIC24EP256MC202T-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.85 | $6.85 |
| 10 | $6.2 | $62.00 |
| 100 | $5.4 | $540.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.35 | $4,350.00 |
PIC24EP256MC202T-I/SS 概述
A microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripherals on one die. Within the broader semiconductor taxonomy, MCUs sit inside the embedded processor hierarchy alongside DSPs and microprocessors. The PIC24E family specifically targets motor control, digital power conversion, and DSP-assisted signal conditioning, bridging 8-bit PIC simplicity and 32-bit dsPIC performance with a 16-bit modified Harvard core and DSP engine for cycle-efficient multiply-accumulate operations.
Key features include six 16-bit timers, a 12-bit ADC with up to 500 ksps conversion rate, four DMA channels, three operational amplifiers accessible to user code, and dedicated motor-control PWMs with edge-aligned or center-aligned modes and complementary outputs with programmable dead time. The 28-SSOP package has a 0.65 mm pitch and 5.30 mm body width, suitable for compact motor-driver boards where space is at a premium.
Architecturally the PIC24EP256MC202T-I/SS pairs the 16-bit PIC24E CPU with a dual-bus Harvard architecture supporting parallel Flash fetch and RAM access. Its peripheral set is purpose-built for closed-loop motor control, including quadrature encoder inputs for position feedback and a high-resolution PWM module capable of 1.04 ns edge resolution for silent switching and precise torque control in 3-phase BLDC, PMSM, and stepper drives.
Typical applications include field-oriented control (FOC) for PMSM motors, sensorless BLDC commutation using BEMF zero-cross detection, industrial servo drives, ceiling fans and appliance pumps, and digital switched-mode power supplies. The integrated op-amps typically condition current-sense shunt signals for the ADC input stage.
When designing with this device, ensure decoupling capacitors are placed within 5 mm of the VDD/VSS pair, follow Microchip AN1078 for sensorless FOC firmware reference, and verify PWM dead-time versus MOSFET turn-off delay to prevent shoot-through in half-bridge stages.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
直接替换替代料： PIC24EP256MC202T-I/SS ——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： PIC24EP256MC202T-I/SS （相同外形与封装尺寸） ——差异在于 ADC, Package, Core Architecture, Operating Temperature, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC24EP256MC202-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC24EP256MC202-I/SP
✅ 直接替换✓ 有现货
$4.65 / 个
查看数据手册 →PIC24EP256MC202-I/SO
✅ 直接替换✓ 有现货
$4.55 / 个
查看数据手册 →PIC24EP128MC202T-I/SO
✅ 直接替换✓ 有现货
$4.05 / 个
查看数据手册 →PIC24EP256GP202T-E/MM
✅ 直接替换✓ 有现货
$4.42 / 个
查看数据手册 →PIC24EP256MC202T-I/SS 最大额定值与电气特性
| Core | PIC 16-bit (PIC24E) |
| Program Memory (Flash) | 256 KB (85.5K x 24) |
| RAM | 32 KB |
| CPU Speed | 70 MIPS (60 MHz max clock) |
| Operating Voltage | 3.0 V to 3.6 V |
| 工作温度 | -40C to +85C (Industrial, -I grade) |
| 封装 | 28-SSOP (0.65 mm pitch, 5.30 mm body) |
| ADC | 10/12-bit, up to 500 ksps |
| PWM Channels | Multiple 16-bit PWM outputs with dead time |
| QEI | Yes (Quadrature Encoder Interface) |
| Op-Amps | 3 on-chip operational amplifiers |
| DMA Channels | 4 |
| Timers | 5 (16-bit) |
| Communication | I2C, SPI, UART |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| RoHS 状态 | Compliant |
PIC24EP256MC202T-I/SS 引脚配置
| 引脚 1 | MCLR — Master Clear (Reset) input, active low |
| 引脚 2 | AVDD — Analog supply voltage |
| 引脚 3 | AVSS — Analog ground |
| 引脚 4 | PMA0/RA0 — Analog input/Port A bit 0 |
| 引脚 5 | PMA1/RA1 — Analog input/Port A bit 1 |
| 引脚 6 | PMA2/RA2 — Analog input/Port A bit 2 |
| 引脚 7 | PMA3/RA3 — Analog input/Port A bit 3 |
| 引脚 8 | PMA4/RA4 — Analog input/Port A bit 4 |
| 引脚 9 | PMA5/RA5 — Analog input/Port A bit 5 |
| 引脚 10 | VDD — Digital supply voltage |
| 引脚 11 | VSS — Digital ground |
| 引脚 12 | OSC1/CLKI — External clock input or crystal connection |
| 引脚 13 | OSC2/CLKO — External clock output or crystal connection |
| 引脚 14 | PGEC1 — ICSP programming clock |
| 引脚 15 | PGED1 — ICSP programming data |
| 引脚 16 | RB0 — Port B bit 0 |
| 引脚 17 | RB1 — Port B bit 1 |
| 引脚 18 | RB2 — Port B bit 2 |
| 引脚 19 | RB3 — Port B bit 3 |
| 引脚 20 | RB4 — Port B bit 4 |
| 引脚 21 | RB5 — Port B bit 5 |
| 引脚 22 | RB6 — Port B bit 6 / PWM |
| 引脚 23 | RB7 — Port B bit 7 / PWM |
| 引脚 24 | RC0 — Port C bit 0 / PWM |
| 引脚 25 | RC1 — Port C bit 1 / PWM |
| 引脚 26 | RC2 — Port C bit 2 / PWM |
| 引脚 27 | RC3 — Port C bit 3 / PWM |
| 引脚 28 | RC4 — Port C bit 4 |
典型应用
PIC24EP256MC202T-I/SS 适用于 6 应用s: Field-Oriented Control (FOC) for PMSM Motors, Sensorless BLDC Fan and Pump Control, Industrial Servo Drive and Robotics, Digital Switched-Mode Power Supply (SMPS), Stepper Motor Controller for 3D Printers and CNC, EV Traction and Auxiliary Motor Drives.
Field-Oriented Control (FOC) for PMSM Motors
The PIC24EP256MC202T-I/SS is purpose-built for field-oriented control of permanent magnet synchronous motors (PMSM) used in drones, e-bikes, and industrial servo drives. Its 70 MIPS CPU runs Clarke and Park transforms plus inverse transforms within a 50 us control loop, while on-chip op-amps condition phase-current shunt signals directly into the ADC. The high-resolution PWM module with programmable dead time drives three-phase inverter bridges with 1.04 ns edge resolution for silent switching. Engineers reference Microchip AN1078 for sensorless FOC firmware, with 256 KB Flash comfortably holding the motor-control state machine plus speed/torque PI controllers.
推荐
Sensorless BLDC Fan and Pump Control
The PIC24EP256MC202T-I/SS drives sensorless BLDC motors in ceiling fans, water pumps, and HVAC blowers. Its 12-bit ADC samples BEMF zero-cross signals from unused phase windings, while the integrated op-amps amplify low-voltage BEMF for ADC capture. The 256 KB Flash stores state-machine-based commutation tables with start-up alignment routines, and the 32 KB RAM holds ADC sample buffers and PID state variables. Microchip AN1160 provides reference sensorless BLDC firmware using BEMF integration, eliminating Hall sensors and reducing BOM cost in high-volume appliance designs.
推荐
Industrial Servo Drive and Robotics
The PIC24EP256MC202T-I/SS drives closed-loop servo axes in CNC machines, robotic arms, and pick-and-place equipment. Its Quadrature Encoder Interface (QEI) directly counts 24-bit position pulses from incremental encoders, while the high-resolution PWM with 1.04 ns resolution generates the analog-equivalent voltage references required for smooth servo response. The 70 MIPS CPU executes cascaded position/velocity/current loops at 16 kHz update rates, with 256 KB Flash holding trapezoidal velocity profiles and S-curve acceleration tables. Multi-drop RS-485 connectivity supports daisy-chained axes in a single networked motion-control system.
推荐
Digital Switched-Mode Power Supply (SMPS)
The PIC24EP256MC202T-I/SS implements digital control loops for telecom and industrial switched-mode power supplies. Its 70 MIPS CPU and 12-bit 500 ksps ADC digitize output voltage and current at high update rates, enabling peak current-mode control at 200 kHz switching frequency. The high-resolution PWM drives optocoupler-isolated gate drivers for primary-side MOSFET switching. With 256 KB Flash and 32 KB RAM, the MCU can store multiple PID compensation coefficients, soft-start profiles, and fault-recovery state machines, while the on-chip op-amps amplify current-sense signals for the inner current loop.
推荐
Stepper Motor Controller for 3D Printers and CNC
The PIC24EP256MC202T-I/SS controls bipolar stepper motors in 3D printers, small CNC routers, and automated laboratory equipment. Its 16-bit PWM with center-aligned mode drives dual H-bridge MOSFET stages, while the QEI counts lost-step feedback from optional encoders. The 256 KB Flash stores G-code interpreters and acceleration/deceleration trapezoidal profiles, with the 70 MIPS CPU executing real-time kinematic calculations per axis. On-chip op-amps sense motor current for microstepping current chopping, achieving 1/32 microstepping smoothness.
推荐
EV Traction and Auxiliary Motor Drives
The PIC24EP256MC202T-I/SS targets automotive auxiliary motors - HVAC blowers, coolant pumps, electric power-steering assist - where the 70 MIPS CPU runs torque-vector algorithms and CAN/LIN comms for vehicle networking. Its 3 on-chip op-amps condition dual-shunt phase currents, and the high-resolution PWM drives 600 V IGBT gate-driver stages with programmable dead-time preventing shoot-through. The 28-SSOP package fits in compact ECU enclosures, while the industrial -40C to +85C temperature range tolerates under-hood thermal stress. For AEC-Q100 automotive qualification, upgrade to the automotive-grade sibling in the PIC24E family.
推荐
推荐产品汇总
工程参考数据： PIC24EP256MC202T-I/SS ——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 | PIC24EP256MC202-I/SS | PIC24EP256MC202-I/SP | PIC24EP256MC202-I/SO | PIC24EP128MC202T-I/SO | PIC24EP256GP202T-E/MM |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SPDIP - same die | 28-SOIC - same die | 28-SOIC - same | 28-SSOP - same |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | — | 32 KB |
| CPU Speed (MIPS) | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Voltage | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
| On-Chip Op-Amps | 3 | 3 | 3 | 3 | 3 | 0 |
| QEI (Quadrature Encoder Interface) | Yes | Yes | Yes | Yes | Yes | No |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) |
关键差异点
- On-chip op-amps eliminate external analog conditioning （对比 PIC24EP256GP202T-E/MM)
- Dedicated high-resolution PWM with programmable dead time （对比 PIC24EP256GP202T-E/MM)
- Quadrature Encoder Interface for closed-loop servo control （对比 PIC24EP256GP202T-E/MM)
设计说明
Place 100 nF decoupling capacitors within 5 mm of every VDD/VSS pin pair and a 10 uF bulk capacitor near the IC power pin. The PIC24EP256MC202T-I/SS has multiple VDD/VSS pairs on the 28-SSOP package. Use a 3.3 V LDO such as MCP1700 with at least 200 mA headroom; the MCU consumes 60 mA peak at 70 MIPS. Add a ferrite bead to isolate ADC analog VDD from digital VDD for noise-sensitive current-sense measurements.
The 28-SSOP package has theta_JA of approximately 71 C/W on a 4-layer JEDEC test board. At full CPU speed of 70 MIPS the MCU core dissipates up to 600 mW, raising junction temperature 42 C above ambient. For continuous motor-control loops, ensure ambient temperature stays below 70 C with the industrial -I grade. Add thermal vias beneath the exposed lead-frame pad area to spread heat into inner PCB copper planes.
Keep analog and digital grounds separate at the MCU; tie them together at a single point near the AVSS pin. Route BEMF and current-shunt analog signals directly to the assigned ADC pins without crossing PWM or communication traces. For SSOP packages, route signals on inner layers with via fan-outs to minimize crosstalk between the high-speed PWM outputs and the analog op-amp inputs. Microchip AN1078 and AN1160 reference schematics provide EMC-compliant layouts.
Do not confuse the PIC24EP256MC202 (motor-control) with the PIC24EP256GP202 (general-purpose); only the MC variant has on-chip op-amps, QEI, and complementary PWM with dead-time generators. Verify the ordering code exactly. Also note the I-suffix is industrial -40C to +85C, while the E-suffix is extended -40C to +125C - select by your thermal budget. Programming pin PGEC1/PGED1 must not be pulled low at reset or the MCU enters ICSP mode.
Estimated: PWM outputs on the PIC24EP256MC202T-I/SS have 4 ns rise time into 50 pF load. For gate-driver traces longer than 50 mm, add a 22 ohm series resistor to dampen transmission-line reflections. Place 100 nF ceramic bypass capacitors on each gate-driver IC supply pin within 3 mm of the pin. Keep the oscillator crystal within 5 mm of the OSC1/OSC2 pins with a guard ground ring on the PCB layer to minimize EMI susceptibility.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - industrial -I grade only; for automotive designs choose the AEC-Q100 sibling variant in the PIC24E family.
