PIC24EP128MC202T-I/SO - 16-bit MCU, 128KB Flash, 60MIPS | Microchip
MPN: PIC24EP128MC202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.74 | $57.40 |
| 100 | $5.1 | $510.00 |
| 500 | $4.55 | $2,275.00 |
| 1,000 | $4.05 | $4,050.00 |
PIC24EP128MC202T-I/SO Overview
A PIC24E microcontroller is a 16-bit Modified Harvard architecture DSC (Digital Signal Controller) that combines MCU control logic with DSP-class multiply-accumulate (MAC) throughput. In the system hierarchy it sits above 8-bit MCUs (PIC16/PIC18) and below 32-bit Cortex-M devices, delivering deterministic real-time control for power-conversion and motor-drive loops while retaining low BOM cost.
Key features include up to 70 MIPS execution from a 60 MHz oscillator, dedicated Motor Control PWM (MCPWM) with up to 1.04 ns PWM resolution, four on-chip op-amps configurable as signal-conditioning front-ends, and high-speed comparators for current-shunt sensing. The 28 SOIC footprint exposes the integrated peripherals (UART, SPI, I2C, ECAN) needed for sensor feedback and host communication.
Architecturally, the PIC24EP128MC202 uses a 16-bit wide datapath with DSP engine and single-cycle MAC to handle field-oriented control (FOC) math in real time. The advanced analog subsystem reduces external components by integrating op-amps and comparators directly into the silicon, shortening feedback-loop latency for closed-loop torque and speed control.
Typical applications include BLDC/PMSM motor drives, sensored and sensorless FOC controllers, industrial inverters, fan and pump controllers, power-conversion boards (PFC + LLC), and sensor-fusion front-ends for robotics. The wide operating temperature range (-40C to +85C, industrial grade) suits harsh environments and automotive under-hood prototypes.
When designing with this part, allocate PCB area for the analog power rail because the internal op-amps require clean AVDD. Use Microchip's MPLAB X IDE with XC16 compiler for code generation, and validate motor-drive control loops with the dsPIC33/PIC24E motor-control application notes and the MPLAB Device Blocks for Simulink.
Drop-in alternatives for PIC24EP128MC202T-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 PIC24EP128MC202T-I/SO (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Core Architecture, Analog Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24EP128MC202T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP128MC202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP128MC202-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP128GP202-I/SO
✅ Drop-In✓ In Stock
$2.98 / Unit
View Datasheet →PIC24EP128MC202T-E/MM
✅ Drop-In✓ In Stock
$4.39 / Unit
View Datasheet →PIC24EP128MC202T-E/SS
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC24EP128MC202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24E (16-bit Modified Harvard DSC) |
| Program Memory (Flash) | 128 KB |
| Data Memory (SRAM) | 16 KB |
| Maximum CPU Speed | 70 MIPS at 60 MHz |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| Package | 28-pin SOIC (wide, 7.5 mm body) |
| Motor Control PWM (MCPWM) | Yes, high-speed PWM module |
| On-chip Op-Amps | Up to 4 |
| On-chip Comparators | Yes |
| ADC | 10/12-bit, multi-channel |
| Communication Interfaces | UART, SPI, I2C, ECAN |
| Operating Temperature | -40 C to +85 C (Industrial, 'I') |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Halogen-Free | Yes |
| Instruction Set | 16-bit PIC24E with DSP extensions (MAC) |
PIC24EP128MC202T-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active-low; tie to VDD via 10 kohm for normal operation |
| Pin 2 | OSC1/RA0 — External crystal/clock input or digital I/O RA0 |
| Pin 3 | OSC2/RA1 — External crystal output or digital I/O RA1 |
| Pin 4 | AN0/RB0 — Analog input 0 / digital I/O RB0 |
| Pin 5 | AN1/RB1 — Analog input 1 / digital I/O RB1 |
| Pin 6 | AN2/RB2 — Analog input 2 / digital I/O RB2 |
| Pin 7 | AN3/RB3 — Analog input 3 / digital I/O RB3 |
| Pin 8 | VSS — Digital ground reference |
| Pin 9 | OC1/RB4 — Output Compare 1 / PWM output / digital I/O RB4 |
| Pin 10 | OC2/RB5 — Output Compare 2 / PWM output / digital I/O RB5 |
| Pin 11 | OC3/RB6 — Output Compare 3 / PWM output / digital I/O RB6 |
| Pin 12 | OC4/RB7 — Output Compare 4 / PWM output / digital I/O RB7 |
| Pin 13 | PWM1H/RA2 — MCPWM high-side output 1 / digital I/O RA2 |
| Pin 14 | PWM1L/RA3 — MCPWM low-side output 1 / digital I/O RA3 |
| Pin 15 | PWM2H/RA4 — MCPWM high-side output 2 / digital I/O RA4 |
| Pin 16 | PWM2L/RA5 — MCPWM low-side output 2 / digital I/O RA5 |
| Pin 17 | VSS — Digital ground reference |
| Pin 18 | VDD — Digital supply voltage, 3.0 V to 3.6 V |
| Pin 19 | AVSS — Analog ground reference |
| Pin 20 | AVDD — Analog supply voltage, must be filtered for clean ADC/op-amp operation |
| Pin 21 | SDA1/RG3 — I2C1 SDA / digital I/O |
| Pin 22 | SCL1/RG2 — I2C1 SCL / digital I/O |
| Pin 23 | U1TX/RC0 — UART1 TX / digital I/O RC0 |
| Pin 24 | U1RX/RC1 — UART1 RX / digital I/O RC1 |
| Pin 25 | FLTA1/RC2 — MCPWM Fault input A / digital I/O RC2 |
| Pin 26 | FLTB1/RC3 — MCPWM Fault input B / digital I/O RC3 |
| Pin 27 | INT0/RB8 — External interrupt 0 / digital I/O RB8 |
| Pin 28 | VDD — Digital supply voltage, 3.0 V to 3.6 V |
Typical Applications
PIC24EP128MC202T-I/SO is suitable for 6 applications: BLDC / PMSM Motor Drive, Industrial Inverter and Servo Controller, Power Factor Correction (PFC) and LLC Converter, Robotic Sensor-Fusion and Motion Control, HVAC Fan and Pump Speed Controller, Solar Micro-Inverter and MPPT Controller.
BLDC / PMSM Motor Drive
The PIC24EP128MC202T-I/SO is a primary MCU choice for sensorless field-oriented control (FOC) of BLDC and PMSM motors in industrial drives. Its 70 MIPS 16-bit core executes FOC math (Clarke/Park transforms and inverse transforms) in real time, while the integrated Motor Control PWM (MCPWM) generates up to 1.04 ns resolution complementary PWMs with dead-band insertion and hardware fault shutdown. The four on-chip op-amps amplify low-side current-shunt signals without external amplifiers, and the high-speed comparators detect back-EMF zero-cross events in sensorless commutation. This integration collapses the typical analog front-end into the silicon, reducing BOM and PCB area in 24V/48V BLDC pumps, fans, and e-bike traction motors.
Recommended
Industrial Inverter and Servo Controller
In three-phase industrial inverters and servo amplifiers, the PIC24EP128MC202T-I/SO serves as the main DSP-style controller running space-vector modulation (SVM) and torque-control loops at the 16 kHz PWM update rate. Its 16-bit DSP MAC completes inverse-Park and SVPWM calculations in under 5 us per switching cycle, leaving MIPS headroom for encoder feedback, CANopen comms, and protective fault handling. The 128 KB Flash holds full state-machine firmware plus a CAN bootloader for in-field updates, and the 16 KB SRAM accommodates two full SVPWM look-up tables. Industrial-grade -40C to +85C operation ensures reliable service in factory cabinets and outdoor pump stations.
Recommended
Power Factor Correction (PFC) and LLC Converter
Digital PFC and resonant LLC power-conversion loops benefit from the PIC24EP128MC202T-I/SO's combination of DSP-class MAC throughput, 12-bit ADC, and high-resolution MCPWM. Average-current-mode PFC algorithms require tight proportional-integral control at 50-100 kHz switching frequency, which the 70 MIPS core handles while leaving margin for auxiliary housekeeping and communication. The integrated op-amps condition current-sense resistor signals with low offset, reducing bill-of-materials cost relative to a discrete analog approach. With 128 KB Flash, designers can combine PFC + LLC control loops plus PMBus telemetry into a single MCU for server, telecom, and industrial SMPS designs.
Recommended
Robotic Sensor-Fusion and Motion Control
In mobile robotics and AGV platforms, the PIC24EP128MC202T-I/SO integrates sensor-fusion math (IMU filtering, encoder interpolation) and motor-control loops on one die. The DSP MAC performs quaternion updates and complementary filters at >1 kHz while simultaneously generating four PWM channels for Mecanum-wheel or differential-drive control. The four on-chip op-amps interface directly with analog Hall-effect current sensors and strain-gauge force/torque sensors, while the integrated comparators handle limit-switch debouncing and emergency-stop hardware paths. Its 28-SOIC package enables through-hole-friendly hand prototyping as well as high-density reflow production builds.
Recommended
HVAC Fan and Pump Speed Controller
Variable-speed HVAC fans, chilled-water pumps, and ventilation blowers use the PIC24EP128MC202T-I/SO to execute PI-based closed-loop RPM control with soft-start profiles. The MCPWM provides complementary drive signals for the IGBT/MOSFET three-phase bridge, while on-chip op-amps read DC-bus current for overload protection. ECAN enables native BACnet or Modbus gateway integration without an external transceiver MCU. Industrial temperature grade and integrated analog simplify the FCC/UL safety approvals, since fewer external analog components means fewer failure modes to certify in commercial-building equipment.
Recommended
Solar Micro-Inverter and MPPT Controller
Photovoltaic micro-inverters and MPPT charge controllers use the PIC24EP128MC202T-I/SO to execute perturb-and-observe or incremental-conductance MPPT at sub-100 ms update rates while running a full-bridge inverter control loop at 50-60 kHz PWM. Its 16-bit MAC multiplies grid-current samples by sine lookup tables for power-factor correction, and the integrated op-amps condition Hall-effect current sensors on the grid side. The 128 KB Flash stores both the inverter control code and a non-volatile fault-event log accessed over the UART commissioning port. With 16 KB SRAM, dual ADC sample buffers and the SVPWM lookup table all fit on-chip, reducing external memory and BOM cost.
Recommended
Recommended Products Summary
Engineering reference data for PIC24EP128MC202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24EP128MC202T-E/SO | PIC24EP128MC202-I/SO | PIC24EP128GP202-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (wide) | 28-SOIC (wide) - same | 28-SOIC (wide) - same | 28-SOIC (wide) - same |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum Speed | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Motor Control PWM | Yes (MCPWM with op-amps and comparators) | Yes | Yes | No (general-purpose variant) |
| On-chip Op-Amps | Up to 4 | Up to 4 | Up to 4 | 0 |
| Packaging Media | Tape & Reel | Tape & Reel | Tube | Tube |
Key Differentiators
- Integrated Motor Control PWM (MCPWM) with hardware fault shutdown (vs PIC24EP128GP202-I/SO)
- Up to 4 on-chip operational amplifiers for current-shunt signal conditioning (vs PIC24EP128GP202-I/SO)
- Pin-to-pin compatibility with extended-temperature variant (vs PIC24EP128MC202T-E/SO)
Design Notes
Decouple the PIC24EP128MC202T-I/SO with a 100 nF ceramic capacitor placed within 5 mm of the VDD pin and a parallel 10 uF bulk capacitor on the AVDD rail. The internal op-amps and ADC draw fast transient currents on AVDD; insufficient decoupling causes ADC noise floor to rise by 2-3 LSBs and corrupts current-shunt feedback in motor-control loops. Estimated: at 70 MIPS core activity the digital supply current spikes roughly 50 mA per clock edge; the 100 nF caps must have low ESL (X7R/C0NP) for effective high-frequency suppression. Tie AVDD and VDD together only through a ferrite bead or 10 ohm resistor to prevent digital switching noise coupling into the analog rail.
The 28-SOIC (wide body) package has a theta_JA of approximately 65 C/W in still air, so at full 70 MIPS the silicon's worst-case power dissipation of about 0.5 W (3.3 V x 150 mA) yields a junction temperature rise of only 32 C above 25 C ambient. Estimated: this calculation uses typical ICC numbers from the PIC24E datasheet; the high-current I/O loading and PWM toggle rate can push ICC up by another 30-40 mA, raising theta_JA effective by 20-25 C/W if the PCB copper pour is small. For -40C to +85C industrial operation, ensure at least 100 mm^2 of uninterrupted ground copper under the SOIC thermal pad-adjacent traces to dissipate heat. The PIC24EP128MC202T-E/SO extended-temperature variant is recommended if ambient exceeds 85 C.
Route the high-current MCPWM outputs (PWM1H/L and PWM2H/L) as short 0.5 mm-wide traces on the top layer with a continuous ground pour underneath, and keep the analog op-amp input traces (AN0-AN3) away from PWM edges by at least 3 mm or guarded with a ground trace. Estimated: a 1 ns PWM edge couples roughly 5-10 mV of crosstalk into adjacent analog traces 1 mm away; the 3 mm guard rule keeps coupling below the 12-bit ADC LSB of 800 uV. Place the external crystal within 5 mm of OSC1/OSC2 and surround it with a ground ring to suppress radiated EMI that could otherwise fail EN 55011/CE radiated-emissions testing on motor-drive boards.
Three pitfalls frequently trip new PIC24EP designers. First, do not leave the FLTA1/FLTB1 MCPWM fault pins floating; tie them high or low explicitly so a transient does not latch the PWM outputs off unintentionally. Second, the MCLR pin must rise through the 2.85 V VDD threshold within 100 ms of power-up or the device stays in reset; use a 10 kohm pull-up to VDD and a 100 nF capacitor to slow the rise time. Third, when using the internal op-amps, ensure the dedicated AVSS analog ground pin is tied to the same 0 V reference as VSS at a single point under the IC; multiple ground-return paths create ground-loop currents that add DC offset to current-shunt measurements.
Compliance Information
RoHS and REACH compliant per Microchip product page. The 'I' temperature grade is industrial (-40C to +85C), not AEC-Q100 automotive qualified; automotive applications should evaluate the PIC24EP128MC202T-E/SO extended-grade variant. Lead-free (Pb-free) reflow compatible per JEDEC J-STD-020 MSL-3.
