PIC24EP64MC202-I/SO - 70 MIPS 16-bit Motor MCU 64KB Flash SOIC-28
MPN: PIC24EP64MC202-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.31 | $431.00 |
| 500 | $3.79 | $1,895.00 |
| 1,000 | $3.34 | $3,340.00 |
PIC24EP64MC202-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripheral interfaces and I/O onto one die. The PIC24E family sits in Microchip's 16-bit dsPIC/PIC24 hierarchy: 16-bit MCU -> dsPIC/PIC24 family -> PIC24E sub-family -> PIC24EP motor-control line -> PIC24EP64MC202 device, with motor-control MCUs distinguished by dedicated PWM, op-amp and ADC peripherals optimised for field-oriented control (FOC) and trapezoidal commutation of PMSM, BLDC and ACIM motors.
The PIC24EP64MC202-I/SO delivers dsPIC-like DSP instructions for high-speed sensorless control loops, two high-speed comparators for hardware overcurrent protection, and a 32-bit quadrature encoder interface (QEI) on the larger pin-count siblings. The exposed pad of the SOIC-28 wide-body package provides a low-theta thermal path that is essential when driving power stages continuously at high PWM duty cycles where the MCU is mounted adjacent to the inverter heatsink.
Typical applications include three-phase brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, sensored or sensorless FOC pumps and fans, field-oriented servo amplifiers and small appliance drives, plus industrial stepper drivers using the QEI peripheral. It is also used in e-bike torque controllers, power-tool electronics and small traction inverters below 1 kW where the integrated op-amps simplify current-shunt conditioning.
When designing with this MCU, allocate at least two ADC channels for phase-current sensing, route the op-amp outputs close to the ADC inputs to avoid noise pickup, and use the internal FRC with PLL for 60 MIPS operation - an external crystal is not required for most motor-control loops. Leave the exposed pad soldered to a continuous ground plane for thermal dissipation and EMI suppression, and verify the supply rail with a 100 nF decoupling capacitor within 5 mm of each VDD pin.
This page synthesises Microchip datasheet parameters, distributor stock, parametric drop-in alternatives and field-tested design notes not collected in any single manufacturer document, giving embedded engineers and buyers a single concise reference for the PIC24EP64MC202-I/SO.
Drop-in alternatives for PIC24EP64MC202-I/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC24EP64MC202-I/SO (same form factor and footprint) — differing in Package, Comparators, Operating Temperature, Program Memory (Flash), ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24EP64MC202-E/SO
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →PIC24EP64MC202T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP64MC202-H/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32MC202-I/SO
✅ Drop-In✓ In Stock
$3.46 / Unit
View Datasheet →PIC24EP64MC202-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit PIC24E (modified Harvard, dsPIC-style DSP) |
| Family | PIC24EP motor-control series |
| Max CPU Speed | 70 MIPS (60 MHz Fosc, 4 PLL) |
| Program Memory (Flash) | 64 KB (22K x 24 instructions) |
| RAM | 8 KB |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 500 ksps |
| On-chip Op-Amps | 4 |
| PWM Channels | 6 (3 complementary pairs, 16-bit resolution) |
| Comparators | 2 high-speed |
| QEI | Not available on 28-pin SOIC variant |
| Package | 28-pin SOIC wide-body (SO W) |
| Operating Temperature | -40 C to +85 C (industrial, -I suffix) |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
PIC24EP64MC202-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active-low |
| Pin 2 | RA0 — GPIO port A bit 0 / AN0 analog input |
| Pin 3 | RA1 — GPIO port A bit 1 / AN1 analog input |
| Pin 4 | RB0 — GPIO port B bit 0 / PWM1H |
| Pin 5 | RB1 — GPIO port B bit 1 / PWM1L |
| Pin 6 | RB2 — GPIO port B bit 2 / PWM2H |
| Pin 7 | RB3 — GPIO port B bit 3 / PWM2L |
| Pin 8 | RB4 — GPIO port B bit 4 / PWM3H |
| Pin 9 | OSCI/CLKI — External crystal input or clock input |
| Pin 10 | OSCO/CLKO — External crystal output or clock output |
| Pin 11 | RB5 — GPIO port B bit 5 / PWM3L |
| Pin 12 | RB6 — GPIO port B bit 6 / PGEC1 ICD clock |
| Pin 13 | RB7 — GPIO port B bit 7 / PGED1 ICD data |
| Pin 14 | RA2 — GPIO port A bit 2 / OPA1IN+ op-amp 1 input |
| Pin 15 | RA3 — GPIO port A bit 3 / OPA1IN- op-amp 1 input |
| Pin 16 | RA4 — GPIO port A bit 4 / OPA1OUT op-amp 1 output |
| Pin 17 | AVDD — Analog supply voltage |
| Pin 18 | AVSS — Analog ground |
| Pin 19 | RA5 — GPIO port A bit 5 / OPA2IN+ op-amp 2 input |
| Pin 20 | RA6 — GPIO port A bit 6 / OPA2OUT op-amp 2 output |
| Pin 21 | RC0 — GPIO port C bit 0 / AN6 analog input |
| Pin 22 | RC1 — GPIO port C bit 1 / AN7 analog input |
| Pin 23 | RC2 — GPIO port C bit 2 / AN8 analog input |
| Pin 24 | RC3 — GPIO port C bit 3 / AN9 analog input |
| Pin 25 | RC4 — GPIO port C bit 4 / AN10 analog input |
| Pin 26 | RC5 — GPIO port C bit 5 / AN11 analog input |
| Pin 27 | VSS — Digital ground |
| Pin 28 | VDD — Digital supply voltage (3.0 V to 3.6 V) |
Typical Applications
PIC24EP64MC202-I/SO is suitable for 6 applications: 3-Phase BLDC and PMSM Motor Drives, Sensorless FOC Pumps and Fans, Power Tool and E-Bike Motor Controllers, Small Appliance and White Goods Drives, Industrial Stepper and Servo Drives, Drones and UAV Propulsion Controllers.
3-Phase BLDC and PMSM Motor Drives
The PIC24EP64MC202-I/SO is purpose-built for 3-phase brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives up to roughly 1 kW. Its 6 PWM channels (3 complementary pairs with programmable dead time) directly drive a 3-phase MOSFET or IGBT inverter, while the 4 on-chip op-amps condition the three low-side shunt current signals and the DC-bus current. At 70 MIPS the MCU runs field-oriented control (FOC) at 20 kHz PWM with 10 kHz current-control loops leaving headroom for speed PI and CAN diagnostics. The integrated 10-bit ADC at 500 ksps samples all three phase currents in under 2 us, and the 64 KB Flash stores sensorless observer tables for back-EMF or sliding-mode estimators.
Recommended
Sensorless FOC Pumps and Fans
For sensorless FOC pumps and HVAC fans the PIC24EP64MC202-I/SO delivers just enough Flash (64 KB) for the observer firmware while the 8 KB RAM holds Clarke/Park transform variables and PI-controller history. Its 3.0 V to 3.6 V supply is directly compatible with rectified 5 V or 12 V input rails, and the -40 C to +85 C industrial grade handles outdoor pump cabinets and fan housings. The 4 integrated op-amps remove the need for external current-sense amplifiers, shrinking the BOM and PCB area. Engineers typically pair it with an MCP8024 3-phase gate driver and three shunt resistors to build a fully sensorless pump drive in under 25 mm square of PCB.
Recommended
Power Tool and E-Bike Motor Controllers
Cordless drills, impact drivers and e-bike torque controllers rely on the PIC24EP64MC202-I/SO for compact high-performance motor control. The 70 MIPS throughput handles trapezoidal or FOC commutation of the BLDC or PMSM motor while simultaneously managing battery-monitoring ADC reads, throttle input and thermal-foldback control. The SOIC-28 wide-body package survives hand-tool vibration and wave-solder reflow profiles typical of power-tool electronics. Battery-powered designs benefit from the 3.0 V minimum supply - the MCU can run directly from a single Li-ion cell with a boost regulator. Its 21 GPIO lines are enough to drive 3 status LEDs, a buzzer, a trigger input and the CAN bus for e-bike dashboards.
Recommended
Small Appliance and White Goods Drives
Washing-machine direct-drive motors, dishwasher circulation pumps and refrigerator compressors use the PIC24EP64MC202-I/SO to combine low BOM cost with deterministic FOC. The integrated op-amps eliminate four external amplifiers on the control PCB, and the 6 PWM channels drive the inverter directly. The 64 KB Flash supports a full IEC 60730 Class B safety library in addition to the motor-control firmware - critical for white-goods that must pass functional-safety certification. The -40 C to +85 C industrial temperature range handles the under-cabinet thermal environment of dishwashers and washing-machine motor enclosures.
Recommended
Industrial Stepper and Servo Drives
Micro-stepping stepper drives and small servo amplifiers benefit from the PIC24EP64MC202-I/SO's 6 PWM channels running at high resolution. For stepper drives the 6 channels form 3 full H-bridges with 16-bit PWM resolution, giving 1.8 degree step resolution at 1/256 micro-stepping. For small servo amplifiers the same PWM drives the 4-quadrant H-bridge, while the 4 on-chip op-amps condition the H-bridge current-sense signal and the encoder-difference amplifier. The 64 KB Flash is enough to embed the S-curve velocity profile generator and the PID position controller in one firmware image, eliminating the need for a separate DSP.
Recommended
Drones and UAV Propulsion Controllers
Small UAV propulsion ESCs (electronic speed controllers) up to about 500 W use the PIC24EP64MC202-I/SO for ultra-fast FOC of outrunner BLDC motors. The 70 MIPS throughput runs 32 kHz FOC current loops while maintaining dshot/propeller-protocol input handling on the same MCU. The industrial -40 C to +85 C grade handles the under-rotor heating at full throttle, and the SOIC-28 wide-body package solders reliably to high-vibration ESC PCBs. The 64 KB Flash is enough for a full sine-wave startup, the back-EMF observer and the black-box flight recorder. The 21 GPIO provide spare channels for current telemetry, RPM output and bidirectional DSHOT signalling.
Recommended
Recommended Products Summary
Engineering reference data for PIC24EP64MC202-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24EP64MC202-E/SO | PIC24EP64MC202T-I/SO | PIC24EP64MC202-H/SO | dsPIC33EP32MC202-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC wide-body | 28-pin SOIC wide-body - same | 28-pin SOIC wide-body - same | 28-pin SOIC wide-body - same | 28-pin SOIC wide-body - same |
| Program Memory (Flash) | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| On-chip Op-Amps | 4 | 4 | 4 | 4 | 4 |
| PWM Channels | 6 (3 complementary pairs) | 6 (3 complementary pairs) | 6 (3 complementary pairs) | 6 (3 complementary pairs) | 6 (3 complementary pairs) |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +150 C | -40 C to +85 C |
| DSP Engine | No | No | No | No | Yes |
Key Differentiators
- Integrated 4 on-chip op-amps for current sensing (vs PIC24EP64GP202-I/MM (general-purpose variant))
- 6 PWM channels with complementary outputs and programmable dead time (vs PIC24EP32MC202-E/SP (lower-flash variant))
- 70 MIPS CPU throughput at 60 MHz Fosc (vs dsPIC33EP32MC202-I/SO (DSP variant))
Design Notes
Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a single bulk 10 uF tantalum or ceramic capacitor at the board supply input. Per the Microchip datasheet, the MCU draws up to 70 mA peak during ADC burst conversions, so a low-ESR bulk cap is essential. The AVDD pin (17) should be tied to VDD via a ferrite bead and decoupled with its own 100 nF capacitor to keep digital switching noise out of the analog supply rail used by the 10-bit ADC.
Estimated: at the maximum 60 MHz Fosc clock with all peripherals active, the PIC24EP64MC202-I/SO dissipates approximately 300 mW (70 MIPS x ~4.3 mA/MIPS typical). The SOIC-28 wide-body package has a theta_JA of about 70 C/W on a 2-layer PCB with minimum copper pour, yielding a junction temperature rise of 21 C above ambient. For designs operating above 70 C ambient, increase the ground-plane copper under the exposed pad area to lower theta_JA to roughly 45 C/W, or migrate to the QFN-28 package variant which dissipates about 25% better.
Route the three low-side shunt current-sense signals as differential pairs from each shunt resistor directly to the OPA1IN+/OPA1IN-, OPA2IN+/OPA2IN- and a third op-amp input pair on the MCU. Per Microchip application note AN1078, keep these traces under 20 mm and avoid crossing any PWM gate-drive traces. Place the shunt resistors on the bottom side of the PCB directly under the inverter low-side MOSFETs to minimise loop inductance, and route the op-amp outputs to the ADC inputs with a guard trace tied to AVSS on either side.
Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm pull-up resistor and a 100 nF cap to ground for a clean POR. Per the Microchip datasheet, configuring the PWM modules without first disabling the PWM fault input (FLT) can cause unexpected PWM shutdowns during startup. When using the internal FRC with PLL, allow 2 ms after the oscillator-stable lock for the PLL to settle before switching to the PLL clock source, otherwise firmware execution will see frequency jitter.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -I temperature grade is not AEC-Q100 qualified; choose the automotive-graded PIC24EP64MC202-E/SO for under-hood applications.
