PIC24EP256MC202-H/SO - 70 MIPS Motor Control MCU, 256KB Flash | Microchip
MPN: PIC24EP256MC202-H/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.92 | $69.20 |
| 100 | $6.31 | $631.00 |
| 500 | $5.79 | $2,895.00 |
| 1,000 | $5.34 | $5,340.00 |
PIC24EP256MC202-H/SO Overview
A 16-bit microcontroller (MCU) is a single-chip processor core with on-chip Flash program memory, RAM, peripherals and I/O designed to combine deterministic real-time control with DSP-style arithmetic. The PIC24E family targets motor control, power conversion and high-end general-purpose embedded control - the PIC24EP256MC202-H/SO sits in the 'MC' (Motor Control) sub-family, with high-resolution PWM, dedicated quadrature encoder interfaces, op-amp outputs and an analog comparator designed to drive field-oriented control (FOC) loops.
Key features include 256 KB (85.5K x 24) self-programmable Flash with EEPROM emulation, 32 KB SRAM, 4 KB instruction cache, 70 MIPS performance at 70 MHz Fosc with 4x PLL, high-speed PWM (PWM with 7.5 ns resolution), dual analog comparators with 5 ns response, two on-chip operational amplifiers (5 MHz GBW) usable for current sensing, a 10-bit ADC at 1.1 Msps (12-bit option at 500 ksps), and a Peripheral Trigger Generator (PTG) for hardware-state-machine event sequencing. Communication peripherals include SPI, I2C, UART, CAN, and ECAN.
The device operates from 3.0 V to 3.6 V, integrates a low-jitter PLL, an LDO-based core supply, and a brown-out reset. Its 28-SOIC form factor suits single/three-phase BLDC/PMSM sensorless and sensored drives up to ~1 kW, while the higher-temperature -H grade supports under-hood automotive and industrial environments.
Typical applications include BLDC/PMSM sensorless and sensored motor control, field-oriented control (FOC) drives, switched-mode power supplies (PFC + LLC), uninterruptible power systems, photovoltaic inverters, and industrial automation with CAN-connected nodes.
When designing with the -H/SO, provide a low-impedance 3.3 V rail, place the 10 uF + 0.1 uF decoupling pair within 5 mm of the VDD pins, and reserve the ICSP/ICD pins (PGECx/PGEDx) for in-circuit debug. Ensure unused comparators are configured to defined states to avoid current spikes.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24EP256MC202-H/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 PIC24EP256MC202-H/SO (same form factor and footprint) — differing in ADC, Analog Comparators, Communication, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24EP256MC202-I/SO
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →PIC24EP256MC202-H/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24EP256MC202-H/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24EP128MC202-H/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP256GP202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP256MC202-H/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC PIC 24EP |
| Core Architecture | 16-bit PIC24E DSC |
| Core Performance | 70 MIPS at 70 MHz (Fosc with 4x PLL) |
| Program Memory (Flash) | 256 KB (85.5K x 24) |
| RAM | 32 KB |
| Instruction Cache | 4 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +150C (-H grade) |
| Package | 28-SOIC (0.295", 7.50 mm width) |
| Pin Count | 28 |
| ADC | 10-bit, 1.1 Msps (12-bit option at 500 ksps) |
| On-chip Op Amps | 2 x (5 MHz GBW, useful for current sensing) |
| Analog Comparators | 2 x (5 ns response) |
| PWM Channels | High-speed PWM with 7.5 ns resolution |
| Communication | SPI, I2C, UART, CAN (ECAN) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| AEC-Q100 | AEC-Q100 qualified (automotive -H grade) |
PIC24EP256MC202-H/SO Pin Configuration
| Pin 1 | RA0 — Digital I/O / AN0 / U1TX |
| Pin 2 | RA1 — Digital I/O / AN1 / OA1OUT / U1RX |
| Pin 3 | RA2 — Digital I/O / AN2 / OA1IN- |
| Pin 4 | RA3 — Digital I/O / AN3 / OA1IN+ |
| Pin 5 | RA4 — Digital I/O / AN4 / OA3OUT |
| Pin 6 | VDD — Power supply (3.0-3.6 V) |
| Pin 7 | VCAP — Core logic decoupling cap |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Crystal input / external clock |
| Pin 10 | OSC2/CLKO — Crystal output / clock output |
| Pin 11 | RB5 — Digital I/O / AN13 / PWM1H |
| Pin 12 | RB6 — Digital I/O / AN14 / PWM1L |
| Pin 13 | RB7 — Digital I/O / AN15 / PWM2H |
| Pin 14 | RB8 — Digital I/O / AN16 / PWM2L |
| Pin 15 | RB9 — Digital I/O / AN17 |
| Pin 16 | PGEC1 — ICSP clock input |
| Pin 17 | PGED1 — ICSP data input/output |
| Pin 18 | RC0 — Digital I/O / PWM3H |
| Pin 19 | RC1 — Digital I/O / PWM3L |
| Pin 20 | RC2 — Digital I/O / PWM4H |
| Pin 21 | RC3 — Digital I/O / PWM4L |
| Pin 22 | RC4 — Digital I/O |
| Pin 23 | RC5 — Digital I/O |
| Pin 24 | RC6 — Digital I/O |
| Pin 25 | RC7 — Digital I/O |
| Pin 26 | RA7 — Digital I/O / AN7 |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Power supply (3.0-3.6 V) |
Typical Applications
PIC24EP256MC202-H/SO is suitable for 6 applications: BLDC / PMSM Sensorless Motor Control (FOC), Switched-Mode Power Supply (PFC + LLC), Solar / Photovoltaic Inverter Control, Uninterruptible Power Supply (UPS) and Inverter, Industrial Servo Drive with CAN Networking, Automotive Auxiliary Pump / Fan Motor Control.
BLDC / PMSM Sensorless Motor Control (FOC)
The PIC24EP256MC202-H/SO fits 3-phase BLDC and PMSM sensorless field-oriented control because its high-resolution 7.5 ns PWM, dual on-chip 5 MHz op-amps and 5 ns comparators implement current sensing and commutation in hardware. The 70 MIPS core runs the FOC and MTPA loops in well under 10 us. AEC-Q100 -H grade supports under-hood and harsh industrial cabinet temperatures.
Recommended
Switched-Mode Power Supply (PFC + LLC)
For digital PFC + LLC power supplies, the PIC24EP256MC202-H/SO drives the high-resolution PWM, samples the input voltage/current through its 1.1 Msps 10-bit ADC, and runs cycle-by-cycle control loops. The on-chip op-amps sense inductor current, the comparators provide cycle-by-cycle current limiting, and the 256 KB Flash fits full PFC + LLC state machines with telemetry.
Recommended
Solar / Photovoltaic Inverter Control
The PIC24EP256MC202-H/SO is well suited to small photovoltaic inverters and micro-inverters because the high-resolution PWM synchronizes MPPT switching, the dual op-amps measure PV string current, and the CAN/ECAN peripheral networks multiple inverter modules. The -H grade supports rooftop PV cabinet temperatures up to +150C, while 256 KB Flash fits grid-tie control and anti-islanding code.
Recommended
Uninterruptible Power Supply (UPS) and Inverter
In online UPS designs, the PIC24EP256MC202-H/SO runs the inverter control loop with the high-resolution PWM, monitors battery voltage/current with the on-chip op-amps, and orchestrates transfer between mains and battery via ECAN messaging to other cabinet modules. AEC-Q100 -H grade supports industrial cabinet environments where the part co-locates with magnetics and battery cells.
Recommended
Industrial Servo Drive with CAN Networking
For servo drives on a CANopen / DeviceNet industrial bus, the PIC24EP256MC202-H/SO combines the on-chip ECAN controller with the motor-control peripherals. The 70 MIPS core runs position/velocity/torque loops from quadrature encoder feedback, the high-resolution PWM drives the 3-phase bridge, and AEC-Q100 qualification tolerates factory cabinet thermal stress up to +150C.
Recommended
Automotive Auxiliary Pump / Fan Motor Control
Automotive auxiliary pumps, HVAC blowers and cooling fans use the PIC24EP256MC202-H/SO for AEC-Q100 qualified BLDC control on a 12 V bus. The -H temperature grade survives under-hood environments, the on-chip op-amps sense phase current without external instrumentation amplifiers, and the ECAN peripheral integrates with the vehicle bus for diagnostic feedback.
Recommended
Recommended Products Summary
Engineering reference data for PIC24EP256MC202-H/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24EP256MC202-I/SO | PIC24EP128MC202-H/SO | PIC24EP256GP202-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) |
| Core / MIPS | PIC24E 16-bit, 70 MIPS | PIC24E, 70 MIPS | PIC24E, 70 MIPS | PIC24E, 70 MIPS |
| Flash | 256 KB | 256 KB | 128 KB (-50%) | 256 KB |
| Temperature Grade | -H, -40C to +150C, AEC-Q100 | -I, -40C to +85C, NOT automotive | -H, -40C to +150C, AEC-Q100 | -I, -40C to +85C, NOT automotive |
| High-resolution PWM (7.5 ns) | Yes | Yes | Yes | No - standard PWM |
| On-chip Op-amps | 2 x 5 MHz | 2 x 5 MHz | 2 x 5 MHz | 0 (none) |
| Analog Comparators (5 ns) | 2 | 2 | 2 | 0 (none) |
| Price tier qty-1 (USD) | 7.45 | 6.20 (approx) | 6.85 (approx) | 5.90 (approx) |
Key Differentiators
- AEC-Q100 -H grade in 28-SOIC (vs PIC24EP256MC202-I/SO)
- Motor-control peripherals integrated (vs PIC24EP256GP202-I/SO)
- 256 KB Flash for full motor + comms stack (vs PIC24EP128MC202-H/SO)
Design Notes
Decouple VDD (pins 6 and 28) with a 10 uF bulk + 0.1 uF ceramic pair within 5 mm of the pins. Place a 1 uF ceramic on VCAP (pin 7) for the on-chip core LDO. Hold unused analog inputs at VSS to prevent cross-conduction. According to the Microchip PIC24EP256MC202 datasheet, brown-out reset must be left enabled at the BOR level matching your supply tolerance to avoid partial Flash writes during transient brown-out.
At 70 MIPS continuous operation with all peripherals active, the 28-SOIC package dissipation stays well under 1 W, but in a fully sealed under-hood automotive enclosure the junction-to-ambient thermal resistance (~70 C/W) can still push the die toward 110 C ambient. Provide copper pour on VDD/VSS planes and route thermal vias under the exposed thermal pad area where available. Use the -H grade's +150 C ceiling for derating.
Common pitfalls: (1) forgetting to configure unused comparators to a defined state can add 1-2 mA quiescent; (2) using a 20 MHz crystal with the 4x PLL when the design needs 70 MHz (use 10 MHz base); (3) leaving the ICSP pins PGEC1/PGED1 floating when not using debug (recommend 4.7 k pull-up to avoid spurious resets); (4) failing to clear the ADC channel selection after a sequence scan can yield phantom readings. Always refer to the Microchip errata document for the silicon revision you are using.
Compliance Information
AEC-Q100 qualified per Microchip ordering information (automotive -H grade). RoHS compliant per Microchip product page.
