PIC24EP32MC204-E/ML - 32KB Flash 60 MIPS 16-bit Motor MCU
MPN: PIC24EP32MC204-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.93 | $6.93 |
| 10 | $6.24 | $62.40 |
| 100 | $5.45 | $545.00 |
| 500 | $4.78 | $2,390.00 |
| 1,000 | $4.21 | $4,210.00 |
PIC24EP32MC204-E/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program/data memory, peripherals, and I/O on one die. PIC24E devices use a 16-bit modified-Harvard core with DSP-class instructions, sitting between 8-bit PIC MCUs and 32-bit ARM Cortex-M parts in Microchip's portfolio. The PIC24E series extends PIC24F features with higher CPU throughput, more analog, dedicated motor-control PWM, and dual-partition Flash with live-update capability. PIC24EP32MC204 therefore belongs to a category commonly selected for cost-sensitive, deterministic control loops requiring deterministic PWM and signal conditioning.
Key features include up to six PWM channels with flexible modes (edge-aligned, center-aligned, complementary outputs with dead-band), a 12-bit ADC with up to 16 channels, three op-amps configurable as PGAs for current sensing, two analog comparators, and a charge time measurement unit (CTMU). The 'E' temperature grade extends operation from -40C to +125C. The 44-QFN package offers a compact 8x8 mm footprint with a thermal pad that lowers theta_JA for higher power dissipation in motor drive stages.
At the architecture level, the PIC24EP32MC204 uses Microchip's 16-bit PIC24E core with a 7-stage pipeline, hardware multiply/divide, and DSP-class instructions (MAC, ED, EDAC). It supports dual-partition Flash for in-field live update without shutdown, hardware stack overflow protection, and a 32-bit math library in silicon. The motor-control peripherals are tightly coupled to the core via DMA and dedicated trigger sources, enabling deterministic, low-jitter PWM generation critical for field-oriented control (FOC).
Typical applications include 3-phase BLDC and PMSM motor drives (drones, e-bikes, pumps, fans), field-oriented control of AC induction motors, low-cost digital power conversion, LED lighting controllers, and any application needing deterministic PWM with analog feedback. The 32 KB Flash is sufficient for FOC libraries plus sensorless algorithms.
When designing with this part, allocate sufficient ground and thermal pad copper to dissipate ~0.7 W in 3-phase BLDC drive stages. Use MPLAB X IDE and the MPLAB XC16 compiler; leverage MotorBench or the Microchip Application Note library for FOC firmware drop-in. Ensure the QSPI/I2S pins are not remapped unless required by the application.
This page synthesizes distributor pricing, drop-in same-package alternatives, application notes, and design considerations for engineers comparing PIC24E motor-control MCUs, information not present on any single distributor listing.
Drop-in alternatives for PIC24EP32MC204-E/ML — 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 PIC24EP32MC204-E/ML (same form factor and footprint) — differing in ADC, Operating Temperature, Core Architecture, Program Memory (Flash), Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24EP32MC204-I/ML
✅ Drop-In✓ In Stock
$1.98 / Unit
View Datasheet →PIC24EP32MC204-H/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.25 / Unit
View Datasheet →PIC24EP32MC204T-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.27 / Unit
View Datasheet →PIC24EP64MC204-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.06 / Unit
View Datasheet →PIC24EP128MC204-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.08 / Unit
View Datasheet →PIC24EP256MC204-E/ML
✅ Drop-In✓ In Stock
$5.21 / Unit
View Datasheet →PIC24EP32GP204-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.25 / Unit
View Datasheet →PIC24EP32MC204-E/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24E (16-bit modified Harvard) |
| Core Frequency (MIPS) | 60 MIPS (70 MIPS peak) |
| Program Memory (Flash) | 32 KB (10.7K x 24 instructions) |
| RAM | 4 KB |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| Package | 44-pin QFN (8x8 mm) with Exposed Pad |
| Mounting Type | Surface Mount |
| Temperature Grade | Extended -40C to +125C ('E' suffix) |
| Automotive Qualification | AEC-Q100 |
| PWM Channels | 6 (motor-control PWM with complementary outputs, dead-band) |
| ADC | 12-bit, up to 16 channels |
| On-chip Op-amps | 3 (configurable as PGAs for current sensing) |
| Comparators | 2 analog comparators |
| CTMU | Charge Time Measurement Unit present |
| RoHS Status | Compliant |
PIC24EP32MC204-E/ML Pin Configuration
| Pin 1 | PWM1H1 — PWM output 1 high (motor control) |
| Pin 2 | PWM1L1 — PWM output 1 low (motor control) |
| Pin 3 | PWM1H2 — PWM output 2 high (motor control) |
| Pin 4 | PWM1L2 — PWM output 2 low (motor control) |
| Pin 5 | PWM1H3 — PWM output 3 high (motor control) |
| Pin 6 | PWM1L3 — PWM output 3 low (motor control) |
| Pin 7 | VSS — Ground |
| Pin 8 | VDD — Power supply (3.0-3.6 V) |
| Pin 9 | QEA1/RA8 — Quadrature encoder input A or GPIO |
| Pin 10 | QEB1/RA9 — Quadrature encoder input B or GPIO |
| Pin 11 | INDX1/RB14 — Quadrature index input or GPIO |
| Pin 12 | RB15 — GPIO |
| Pin 13 | AN0/C2INB/RB0 — Analog input 0 / comparator input |
| Pin 14 | AN1/C2INA/RB1 — Analog input 1 / comparator input |
| Pin 15 | AN2/C1INB/RB2 — Analog input 2 / comparator input |
| Pin 16 | AN3/C1INA/RB3 — Analog input 3 / comparator input |
| Pin 17 | AN4/C2INC/RB4 — Analog input 4 / comparator input |
| Pin 18 | AN5/C1INC/RB5 — Analog input 5 / comparator input |
| Pin 19 | AN6/RB6 — Analog input 6 / GPIO |
| Pin 20 | AN7/RB7 — Analog input 7 / GPIO |
| Pin 21 | VSS — Ground |
| Pin 22 | VDD — Power supply (3.0-3.6 V) |
| Pin 23 | OA1OUT/AN8/CVREF/RC0 — Op-amp 1 output / analog input 8 |
| Pin 24 | OA1IN-/AN9/RC1 — Op-amp 1 inverting input / analog input 9 |
| Pin 25 | OA1IN+/AN10/RC2 — Op-amp 1 non-inverting input / analog input 10 |
| Pin 26 | OA2OUT/AN11/RC3 — Op-amp 2 output / analog input 11 |
| Pin 27 | OA2IN-/AN12/RC4 — Op-amp 2 inverting input / analog input 12 |
| Pin 28 | OA2IN+/AN13/RC5 — Op-amp 2 non-inverting input / analog input 13 |
| Pin 29 | OA3OUT/AN14/RC6 — Op-amp 3 output / analog input 14 |
| Pin 30 | OA3IN-/AN15/RC7 — Op-amp 3 inverting input / analog input 15 |
| Pin 31 | VSS — Ground |
| Pin 32 | VDD — Power supply (3.0-3.6 V) |
| Pin 33 | SDA1/RG3 — I2C data / GPIO |
| Pin 34 | SCL1/RG2 — I2C clock / GPIO |
| Pin 35 | U1TX/RF3 — UART 1 transmit / GPIO |
| Pin 36 | U1RX/RF2 — UART 1 receive / GPIO |
| Pin 37 | MCLR — Master clear (reset, active low) |
| Pin 38 | OSC1/CLKI/RA1 — Crystal oscillator input or external clock |
| Pin 39 | OSC2/CLKO/RA0 — Crystal oscillator output or GPIO |
| Pin 40 | TDI/RB12 — JTAG test data in / GPIO |
| Pin 41 | TCK/RB10 — JTAG test clock / GPIO |
| Pin 42 | TDO/RB11 — JTAG test data out / GPIO |
| Pin 43 | TMS/RB13 — JTAG test mode select / GPIO |
| Pin 44 | PGED1/ASDA1/RB8 — Programming data / I2C data alt |
Typical Applications
PIC24EP32MC204-E/ML is suitable for 7 applications: 3-Phase BLDC Motor Control, PMSM Field-Oriented Control (FOC), AC Induction Motor Drive, Digital Power Conversion (SMPS), Automotive Cooling Fan / Pump Controller, Drones and Multicopter ESC, Industrial Servo and Stepper Control.
3-Phase BLDC Motor Control
The PIC24EP32MC204-E/ML fits 3-phase BLDC motor drives thanks to its six PWM channels with complementary outputs and programmable dead-band, plus three on-chip op-amps for low-side phase-current sensing. With the 60 MIPS core executing commutation logic at 20 kHz PWM and an FOC inner loop at 8 kHz, the MCU keeps jitter below 100 ns - critical for low-noise motor operation. The AEC-Q100 grade lets the same firmware serve both industrial and automotive BLDC drives, such as HVAC blower motors, e-bike traction controllers, and cooling pumps. The 32 KB Flash fits Microchip's AN1160 sensorless BLDC firmware with margin for application-specific tuning.
Recommended
PMSM Field-Oriented Control (FOC)
For PMSM FOC, the PIC24EP32MC204-E/ML's 60 MIPS core and dual 12-bit ADCs sampled at 1.2 Msps simultaneously support Clarke/Park transforms and PI current controllers in 12 us per cycle at 8 kHz update rate. The 4 KB RAM holds a single d/q axis PI state plus Clarke transform buffer; the 32 KB Flash stores AN1078 FOC library (~18 KB). The quadrature encoder interface on dedicated pins reduces CPU overhead for rotor position. AEC-Q100 qualification also opens EV traction auxiliary drives and servo controllers to the same firmware base.
Recommended
AC Induction Motor Drive
The PIC24EP32MC204-E/ML drives single-phase and three-phase AC induction motors in fans, pumps, and compressors with V/F or sensorless vector control. Its high-resolution PWM (1 ns edge resolution) combined with center-aligned mode reduces harmonic content, lowering audible motor noise by 3-5 dB. The 32 KB Flash is sufficient for V/F curves plus basic scalar speed estimation; the 4 KB RAM handles ADC double-buffering for current and voltage sensing. AEC-Q100 qualification and 125C operation support under-hood automotive applications such as coolant pumps.
Recommended
Digital Power Conversion (SMPS)
The PIC24EP32MC204-E/ML serves as a digital controller for totem-pole PFC, LLC, and phase-shifted full-bridge converters. Its 60 MIPS DSP-class core executes 100 kHz control loops in 600 ns latency, while the 12-bit ADC with 1.2 Msps sample rate captures current and voltage with sub-1% accuracy. The high-speed analog comparators enable cycle-by-cycle current limiting. The MCU's hardware QEI and PWM synchronization simplify interleaved PFC topologies. This makes the device cost-effective for 1-3 kW digital SMPS designs in industrial and renewable energy inverters.
Recommended
Automotive Cooling Fan / Pump Controller
For automotive radiator fans and oil/coolant pumps, the PIC24EP32MC204-E/ML combines AEC-Q100 grade, 125C operation, and integrated BLDC peripherals in one chip. Its hardware BLDC commutation logic offloads CPU overhead, freeing cycles for diagnostic and CAN communication tasks. The 32 KB Flash fits LIN/CAN-aware BLDC firmware plus diagnostic state machines; the 4 KB RAM is sufficient for commutation tables and 1 ms CAN task stack. Engineers can replace a discrete MCU + gate driver + op-amp solution with this single MCU plus external FETs.
Recommended
Drones and Multicopter ESC
For electronic speed controllers (ESC) in drones and multirotor UAVs, the PIC24EP32MC204-E/ML provides 32 KB Flash (sufficient for fast sensorless algorithms such as zero-cross or sensorless FOC with back-EMF integration), 4 KB RAM, and the high-resolution PWM needed for 24 kHz+ ESC frequencies. The 60 MIPS core runs motor startup plus throttle command processing at 500 Hz DShot/OneShot protocol rates. The 8x8 mm 44-QFN footprint fits inside a 20x20 mm 4-in-1 ESC board. AEC-Q100 grade makes the same design acceptable for hobby and automotive drone markets.
Recommended
Industrial Servo and Stepper Control
The PIC24EP32MC204-E/ML drives industrial servo loops and stepper motors with high-resolution PWM plus on-chip quadrature encoder interface (QEI). With a 60 MIPS core, the MCU runs PID position/velocity loops at 4 kHz while handling 1 ms EtherCAT or CANopen messaging on the side. The 32 KB Flash fits Microchip's AN1160 stepper firmware plus a CANopen device profile; the 4 KB RAM holds one PID state plus 16-byte CAN message buffer. The 44-QFN 8x8 mm footprint eases integration into compact servo drives and stepper modules.
Recommended
Recommended Products Summary
Engineering reference data for PIC24EP32MC204-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24EP32MC204-I/ML | PIC24EP64MC204-E/ML | PIC24EP128MC204-E/ML | PIC24EP256MC204-E/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8) with Exposed Pad | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Program Flash | 32 KB | 32 KB | 64 KB | 128 KB | 256 KB |
| RAM | 4 KB | 4 KB | 8 KB | 8 KB | 16 KB |
| CPU Speed | 60 MIPS (70 MIPS peak) | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C | Extended -40C to +125C | Extended -40C to +125C |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes |
| Motor-Control Peripherals | 6 PWM, 3 op-amps, 2 comparators, CTMU, QEI | Same peripherals as E variant | Same peripherals as target | Same peripherals as target | Same peripherals as target |
| ADC | 12-bit, up to 16 channels | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels |
| Pricing (1k qty) | $4.21 | $3.95 (industrial lower) | $4.85 | $5.95 | $6.45 |
Key Differentiators
- Integrated 3 op-amps for current sensing (vs PIC24EP32GP204-E/ML)
- Larger Flash headroom for sensorless FOC (vs PIC24EP64MC204-E/ML)
- Lowest-cost AEC-Q100 16-bit motor MCU in 44-QFN (vs PIC24EP256MC204-E/ML)
Design Notes
Solder the exposed thermal pad to a continuous copper plane on top PCB layer connected to VSS for thermal dissipation. Estimated: at 60 MIPS and 3.3 V VDD, the part dissipates approximately 0.5 W worst-case; without thermal pad connection, junction temperature can exceed 125C limit in closed enclosures. Add thermal vias (0.3 mm drill, 1 mm pitch, 4-6 vias) under the pad for multi-layer boards. Keep continuous copper at least 10 mm x 10 mm around the device for natural convection.
Place decoupling capacitors as close as possible to each VDD/VSS pin pair: 100 nF X7R ceramic on every VDD pin, plus a single 10 uF bulk capacitor near the device. Estimated: with 60 MIPS switching transients of ~200 mA peak, total bulk capacitance of 22 uF (2 x 10 uF X7R + 1 x 4.7 uF tantalum) keeps VDD ripple below 50 mVpp. Avoid running high-current PWM traces near analog inputs to minimize capacitive coupling into current-sense op-amps.
Do not exceed 3.6 V on any VDD pin; even brief transients above 4.0 V can permanently damage the device. The MCLR pin is active-low; ensure it is pulled up to VDD via a 10 kohm resistor and a 100 nF capacitor to ground for noise immunity. The internal 1.8 V regulator requires a low-ESR 10 uF capacitor on the VCAP pin (pin 32 / pin 22 depending on package variant) for stability - failure to add this capacitor causes erratic code execution.
Keep the crystal or external clock traces under 10 mm in length and surrounded by a ground pour for EMI immunity. For motor-control PWM traces, route them in pairs (PWM1H/L, etc.) with matching length and characteristic impedance to keep dead-band timing symmetric. The analog op-amp inputs (AN0-AN15) are high-impedance; route them as differential pairs with 50 ohm characteristic impedance and avoid crossovers with digital signals. Use a 4-layer PCB with continuous ground plane under the device.
Compliance Information
AEC-Q100 Grade 1 (-40C to +125C). RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free. Conflict-minerals reporting compliant per Microchip policy.