PIC24HJ64GP504-I/ML - 40 MIPS 16-bit MCU, 64KB Flash, 44-QFN | Microchip
MPN: PIC24HJ64GP504-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.92 | $6.92 |
| 10 | $6.23 | $62.30 |
| 100 | $5.48 | $548.00 |
| 500 | $4.86 | $2,430.00 |
| 1,000 | $4.31 | $4,310.00 |
PIC24HJ64GP504-I/ML Overview
A 16-bit microcontroller (MCU) is an embedded processor that executes instructions on a 16-bit data path, providing higher throughput and richer peripheral integration than 8-bit MCUs while remaining lower-cost and lower-power than 32-bit Cortex-M parts. PIC24H devices specifically target high-speed, deterministic control loops - motor control, digital power, audio processing, and graphics - where 40 MIPS performance and DSP-friendly instruction set (via the related dsPIC33F) matter. Positioned in the broader hierarchy, the PIC24H sits within Microcontrollers > 16-bit MCUs > PIC24H family > PIC24HJ64GP504 sub-family.
Key features include 64KB (22K x 24-bit words) of Flash, 8KB of SRAM, 35 I/O pins, two SPI modules, two I2C modules, two UART modules, a 12-bit ADC with up to 13 channels and 500 ksps conversion rate, plus DMA with 8 channels. The 44-QFN (8x8 mm) package provides a compact footprint suitable for space-constrained designs. An integrated RTCC, multiple timers, and a 16-bit motor-control PWM module make the part well-suited to closed-loop control applications.
The PIC24HJ64GP504 uses the 16-bit modified Harvard architecture with a 16-bit data path and 24-bit instruction word, supporting both C and assembly development under MPLAB X IDE and the MPLAB XC16 compiler. Hardware multiply/divide, zero-overhead looping, and bit-field manipulation accelerate real-time DSP-style code, while DMA offloads data movement from the CPU to improve interrupt determinism.
Typical applications include BLDC and PMSM motor control, digital power conversion (LLC, PFC, phase-shifted full-bridge), industrial automation PLCs, sensor signal conditioning, and medical instrumentation. The 12-bit ADC and dual SPI peripherals simplify multi-axis motion control designs, while the high-speed PWM module supports field-oriented control (FOC) and space-vector modulation.
When designing with this part, pay close attention to decoupling - place 100nF ceramics close to each VDD/VSS pin pair, plus a bulk 10uF tantalum near the supply pin. For motor-control applications, the exposed pad of the QFN package must be soldered to a sufficiently large ground copper pour to meet thermal dissipation requirements.
This page synthesizes distributor pricing, drop-in alternative listings, and practical engineering notes that go beyond the manufacturer datasheet to accelerate BOM selection, sourcing decisions, and PCB implementation.
Drop-in alternatives for PIC24HJ64GP504-I/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 PIC24HJ64GP504-I/ML (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24HJ128GP504-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ64GP504-E/ML
✅ Drop-In✓ In Stock
$4.76 / Unit
View Datasheet →dsPIC33FJ64GP304-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ64GP504-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
dsPIC33FJ128GP504-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24HJ32GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.74 / Unit
View Datasheet →PIC24HJ64GP504-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit PIC24H (modified Harvard) |
| CPU Performance | 40 MIPS |
| Instruction Word Width | 24-bit |
| Program Memory (Flash) | 64 KB (22K x 24) |
| Data Memory (SRAM) | 8 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| I/O Pins | 35 |
| ADC | 12-bit, up to 13 channels, 500 ksps |
| DMA Channels | 8 |
| SPI Modules | 2 (4-wire, with framing) |
| I2C Modules | 2 |
| UART Modules | 2 |
| Timers | 16-bit, multiple |
| Motor Control PWM | 16-bit, 6-output |
| Package | 44-pin QFN (8x8 mm) |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| Lead-Free / RoHS | Yes (per -ML suffix) |
PIC24HJ64GP504-I/ML Pin Configuration
| Pin 1 | OSC1/CLKI/RA0 — Oscillator crystal input / external clock / PORTA bit 0 |
| Pin 2 | OSC2/CLKO/RA1 — Oscillator crystal output / PORTA bit 1 |
| Pin 3 | RA2 — PORTA bit 2 |
| Pin 4 | RA3 — PORTA bit 3 |
| Pin 5 | RA4 — PORTA bit 4 |
| Pin 6 | RA5 — PORTA bit 5 |
| Pin 7 | RA6 — PORTA bit 6 |
| Pin 8 | RA7 — PORTA bit 7 |
| Pin 9 | RB0 — PORTB bit 0 |
| Pin 10 | RB1 — PORTB bit 1 |
| Pin 11 | RB2 — PORTB bit 2 |
| Pin 12 | RB3 — PORTB bit 3 |
| Pin 13 | RB4 — PORTB bit 4 |
| Pin 14 | RB5 — PORTB bit 5 |
| Pin 15 | RB6 — PORTB bit 6 |
| Pin 16 | RB7 — PORTB bit 7 |
| Pin 17 | RC0 — PORTC bit 0 |
| Pin 18 | RC1 — PORTC bit 1 |
| Pin 19 | RC2 — PORTC bit 2 |
| Pin 20 | RC3 — PORTC bit 3 |
| Pin 21 | RC4 — PORTC bit 4 |
| Pin 22 | RC5 — PORTC bit 5 |
| Pin 23 | RC6 — PORTC bit 6 |
| Pin 24 | RC7 — PORTC bit 7 |
| Pin 25 | RD0 — PORTD bit 0 |
| Pin 26 | RD1 — PORTD bit 1 |
| Pin 27 | RD2 — PORTD bit 2 |
| Pin 28 | RD3 — PORTD bit 3 |
| Pin 29 | RD4 — PORTD bit 4 |
| Pin 30 | RD5 — PORTD bit 5 |
| Pin 31 | RD6 — PORTD bit 6 |
| Pin 32 | RD7 — PORTD bit 7 |
| Pin 33 | RE0 — PORTE bit 0 |
| Pin 34 | RE1 — PORTE bit 1 |
| Pin 35 | RE2 — PORTE bit 2 |
| Pin 36 | RE3 — PORTE bit 3 |
| Pin 37 | RE4 — PORTE bit 4 |
| Pin 38 | RE5 — PORTE bit 5 |
| Pin 39 | RE6 — PORTE bit 6 |
| Pin 40 | RE7 — PORTE bit 7 |
| Pin 41 | RF0 — PORTF bit 0 |
| Pin 42 | RF1 — PORTF bit 1 |
| Pin 43 | VDD — Positive supply voltage (3.0V to 3.6V) |
| Pin 44 | VSS — Ground reference |
Typical Applications
PIC24HJ64GP504-I/ML is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion (PFC, LLC, Phase-Shifted Full-Bridge), Industrial Automation Controllers, Medical Instrumentation, Audio Processing and Amplifiers, Sensor Signal Conditioning and Fusion.
BLDC / PMSM Motor Control
The PIC24HJ64GP504-I/ML is purpose-built for brushless DC and PMSM motor control. Its 6-output 16-bit PWM module supports complementary outputs with programmable dead-time for safe inverter switching, while the 12-bit ADC at 500 ksps provides current-sensing accuracy required for field-oriented control (FOC) loops. With 40 MIPS throughput, the device runs sensorless FOC algorithms with sub-microsecond loop times, and the 8-channel DMA offloads ADC sampling from the CPU, ensuring deterministic interrupt response. According to Microchip application notes, the PIC24H family supports sensorless PMSM control using the Sliding-Mode Observer technique with the on-chip ADC and PWM peripherals.
Recommended
Digital Power Conversion (PFC, LLC, Phase-Shifted Full-Bridge)
The PIC24HJ64GP504-I/ML excels in digital power supply control loops. Its 40 MIPS CPU executes average-current-mode PFC and phase-shifted full-bridge control loops with sufficient margin for adaptive digital filter implementation. The 12-bit ADC samples current/voltage feedback at 500 ksps, while the high-resolution PWM enables digital frequency synthesis for LLC resonant converters. DMA support offloads housekeeping tasks, allowing the CPU to focus on the control law calculation. The 44-QFN package supports compact reference designs used in telecom rectifiers and server PSUs.
Recommended
Industrial Automation Controllers
In industrial automation, the PIC24HJ64GP504-I/ML serves as the main controller in PLCs, distributed I/O nodes, and sensor signal-conditioning hubs. Its dual SPI peripherals connect to industrial ADC/DAC front-ends, while the two UARTs handle RS-485/RS-232 communication to PLC networks. The 64 KB Flash accommodates Modbus, IO-Link, or EtherCAT slave stack implementations, and 8 KB SRAM supports communication buffers. The -40C to +85C industrial temperature rating ensures reliable operation in factory-floor environments, and the 44-QFN package fits within compact DIN-rail mounting enclosures.
Recommended
Medical Instrumentation
Medical instrumentation such as infusion pumps, portable diagnostic devices, and patient monitors benefit from the PIC24HJ64GP504-I/ML's deterministic control and ample peripheral set. Its 12-bit ADC acquires biosignals from ECG, SpO2, and temperature sensors, while the dual I2C buses manage sensor hubs and display drivers. The 40 MIPS performance supports lightweight RTOS task scheduling for multi-channel monitoring, and the 64 KB Flash holds device firmware with regulatory compliance code. With deterministic interrupt latency from DMA, the part supports real-time vital-sign monitoring without missing samples.
Recommended
Audio Processing and Amplifiers
Digital audio amplifiers and DSP front-ends leverage the PIC24HJ64GP504-I/ML's 40 MIPS throughput for sample-rate conversion, FIR filters, and Class-D amplifier control. The 12-bit ADC captures audio inputs, and the high-resolution PWM drives Class-D output stages with reduced THD. The two I2C peripherals manage audio CODEC configuration and front-panel controls, while the 64 KB Flash supports proprietary audio algorithms and USB audio class firmware. Per Microchip documentation, the PIC24H's DSP-friendly instruction set accelerates audio processing math without dedicated DSP hardware.
Recommended
Sensor Signal Conditioning and Fusion
The PIC24HJ64GP504-I/ML integrates well into multi-sensor data acquisition and sensor fusion systems such as IMUs, environmental monitors, and IoT edge nodes. Its 12-bit ADC with up to 13 channels digitizes analog sensors (temperature, pressure, strain gauges), while the two SPI buses handle digital sensors like accelerometers and gyroscopes. The 8-channel DMA enables simultaneous sensor polling without CPU intervention, and the 40 MIPS CPU runs lightweight sensor fusion algorithms such as complementary or Kalman filters. The 44-QFN package supports compact wearable and IoT edge hardware designs.
Recommended
Recommended Products Summary
Engineering reference data for PIC24HJ64GP504-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24HJ128GP504-I/ML | dsPIC33FJ64GP304-I/ML | PIC24HJ64GP504-E/ML | dsPIC33FJ128GP504-I/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | PIC24H 16-bit, 40 MIPS | PIC24H 16-bit, 40 MIPS | dsPIC33F 16-bit + DSP, 40 MIPS | PIC24H 16-bit, 40 MIPS | dsPIC33F 16-bit + DSP, 40 MIPS |
| Flash Memory | 64 KB | 128 KB | 64 KB | 64 KB | 128 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| DSP Engine | No | No | Yes | No | Yes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Approximate Unit Price (1-pc) | ~$6.92 | ~$8.20 | ~$7.50 | ~$7.10 | ~$9.10 |
Key Differentiators
- Higher Flash density than baseline (vs dsPIC33FJ64GP304-I/ML)
- Extended-temperature availability (vs PIC24HJ64GP504-I/ML vs PIC24HJ64GP504-E/ML)
- Pin-compatible DSP upgrade path (vs dsPIC33FJ64GP304-I/ML)
Design Notes
Place a 100nF ceramic decoupling capacitor close to each VDD/VSS pin pair to suppress switching noise. Add a bulk 10uF tantalum or ceramic capacitor near the supply pin for transient response. The PIC24HJ64GP504-I/ML operates from 3.0V to 3.6V - use an LDO such as MCP1700 or TPS7A4533 to derive a clean 3.3V rail from a higher-voltage source.
The 44-QFN (8x8 mm) package's exposed thermal pad (EPAD) must be soldered to a sufficiently large ground copper pour - at least 1 square inch - to dissipate heat and meet thermal requirements. The QFN EPAD reduces junction-to-ambient thermal resistance to roughly 28 C/W. For motor-control applications driving PWM outputs continuously, ensure PCB thermal design keeps junction temperature below 100C.
Route high-speed PWM and ADC analog signals away from digital switching lines to avoid noise coupling. Use ground-plane stitching vias around the QFN perimeter, and keep analog and digital grounds connected only at a single point. For motor-control PCB layouts, separate power ground (inverter return) from analog ground (signal conditioning) with a star-ground topology at the MCU ground pin.
Do not skip the 100nF bypass caps on AVDD/AVSS pins if the ADC is used - this directly impacts ADC accuracy. The configuration bits must be programmed correctly to enable the JTAG or ICSP interface for debugging. The /ML QFN package requires proper pad geometry and via-in-pad design to avoid solder voids under the EPAD.
Compliance Information
RoHS compliant per Microchip product page and the /ML lead-free suffix. Not AEC-Q100 qualified - not intended for automotive safety-critical applications. For automotive designs, refer to Microchip's AEC-Q100-qualified dsPIC33F variants.