PIC24HJ64GP502-H/SO - 16-bit 20 MIPS 64KB Flash MCU | Microchip
MPN: PIC24HJ64GP502-H/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.06 | $70.60 |
| 100 | $6.28 | $628.00 |
| 500 | $5.65 | $2,825.00 |
| 1,000 | $5.03 | $5,030.00 |
PIC24HJ64GP502-H/SO Overview
A 16-bit microcontroller (MCU) is an embedded computing device that executes instructions on 16-bit data paths in a single cycle, offering a balance of computational throughput, code efficiency, and peripheral integration that 8-bit MCUs cannot match for DSP-style workloads. The PIC24H architecture sits within the broader 16-bit MCU hierarchy (PIC24 -> dsPIC33 -> 32-bit PIC32) and is targeted at high-speed repetitive computations, motor control, and real-time control loops that demand deterministic interrupt latency and hardware DMA.
Key features of this part include a Harvard architecture with a 16-bit data path and 24-bit instruction word, an integrated Direct Memory Access (DMA) controller with 8 channels that offloads CPU overhead, a 12-bit Analog-to-Digital Converter (ADC) with up to 16 channels and 500 ksps throughput, three 16-bit timers that can be paired into one 32-bit timer, two UART modules, two SPI modules, and an ECAN peripheral for Controller Area Network communication. The device operates from 3.0 V to 3.6 V single supply.
Technical depth: the PIC24HJ64GP502 uses a Modified Harvard architecture with separate program (Flash) and data (SRAM) buses, plus a peripheral bus that runs at the system clock divided by 2 for peripheral timing. The on-chip DMA can move data between peripheral buffers and SRAM without CPU intervention, enabling high-throughput streaming while leaving MIPS available for application code. The 12-bit ADC supports simultaneous sampling on multiple channels, which is critical for three-phase motor current sensing where phase synchronization matters.
Typical applications include AC induction motor control, brushless DC (BLDC) motor drives, industrial automation controllers, automotive body and chassis ECUs, uninterruptible power supply (UPS) front-end control, and CAN-based sensor nodes. When designing with this part, ensure the supply rail is decoupled with a 10 uF bulk capacitor plus 0.1 uF ceramic at each VDD pin, and verify that the analog and digital ground returns are joined at a single point beneath the IC to avoid ground-loop noise injection into the ADC.
Drop-in alternatives for PIC24HJ64GP502-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 PIC24HJ64GP502-H/SO (same form factor and footprint) — differing in ADC, Package, Timers, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24HJ64GP502-I/SO
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC24HJ128GP502-H/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ128GP502-I/SO
✅ Drop-In✓ In Stock
$7.45 / Unit
View Datasheet →PIC24HJ32GP202-I/SO
✅ Drop-In✓ In Stock
$2.72 / Unit
View Datasheet →PIC24HJ32GP202-H/SO
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →DSPIC33FJ64GP802-I/SO
✅ Drop-In✓ In Stock
$6.95 / Unit
View Datasheet →PIC24HJ64GP502-H/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24H 16-bit Modified Harvard |
| CPU Speed | 40 MHz (20 MIPS) |
| Instruction Word Size | 24-bit |
| Program Memory (Flash) | 64 KB (22K x 24 instructions) |
| Data Memory (SRAM) | 8 KB |
| General-Purpose I/O | 21 pins |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +150C (H grade) |
| Package | 28-SOIC (SOIC-28W, 0.295 in / 7.50 mm width) |
| Mounting Type | Surface Mount |
| ADC | 12-bit, up to 16 channels, 500 ksps |
| DMA Channels | 8 |
| Timers | 3 x 16-bit (pairable to 32-bit) |
| Communication | 2x UART, 2x SPI, 1x I2C, 1x ECAN |
| Automotive Qualification | AEC-Q100 (H temperature grade) |
| RoHS Status | Compliant (lead-free) |
PIC24HJ64GP502-H/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | AN0/VREF+/RA0 — Analog input 0 / VREF+ / PORTA bit 0 |
| Pin 3 | AN1/VREF-/RA1 — Analog input 1 / VREF- / PORTA bit 1 |
| Pin 4 | PGED1/AN2/RB0 — ICSP data / Analog input 2 / PORTB bit 0 |
| Pin 5 | PGEC1/AN3/RB1 — ICSP clock / Analog input 3 / PORTB bit 1 |
| Pin 6 | AN4/RB2 — Analog input 4 / PORTB bit 2 |
| Pin 7 | AN5/RB3 — Analog input 5 / PORTB bit 3 |
| Pin 8 | VDD — Positive supply voltage (3.0 V to 3.6 V) |
| Pin 9 | VSS — Ground reference |
| Pin 10 | OSC1/RC12 — Oscillator crystal input / PORTC bit 12 |
| Pin 11 | OSC2/RC15 — Oscillator crystal output / PORTC bit 15 |
| Pin 12 | RC13/SOSCO — PORTC bit 13 / Secondary oscillator output |
| Pin 13 | RC14/SOSCI — PORTC bit 14 / Secondary oscillator input |
| Pin 14 | C1IN-/C2IN-/RC0 — Comparator 1/2 inverting / PORTC bit 0 |
| Pin 15 | C1IN+/C2IN+/RC1 — Comparator 1/2 non-inverting / PORTC bit 1 |
| Pin 16 | C1OUT/U1CTS/RC2 — Comparator 1 output / UART1 CTS / PORTC bit 2 |
| Pin 17 | U1RTS/RC3 — UART1 RTS / PORTC bit 3 |
| Pin 18 | U1RX/RC4 — UART1 RX / PORTC bit 4 |
| Pin 19 | U1TX/RC5 — UART1 TX / PORTC bit 5 |
| Pin 20 | U2RX/C2OUT/RC6 — UART2 RX / Comparator 2 output / PORTC bit 6 |
| Pin 21 | U2TX/RC7 — UART2 TX / PORTC bit 7 |
| Pin 22 | RC8 — PORTC bit 8 |
| Pin 23 | RC9 — PORTC bit 9 |
| Pin 24 | INT0/RB7 — External interrupt 0 / PORTB bit 7 |
| Pin 25 | RB8 — PORTB bit 8 |
| Pin 26 | RB9 — PORTB bit 9 |
| Pin 27 | RB10 — PORTB bit 10 |
| Pin 28 | AVDD — Analog positive supply (tie to VDD) |
Typical Applications
PIC24HJ64GP502-H/SO is suitable for 6 applications: Automotive Under-Hood ECU, BLDC Motor Control, Industrial Sensor Node with CAN, Uninterruptible Power Supply Controller, HVAC Variable-Speed Fan Controller, Solar Inverter DC-DC Stage.
Automotive Under-Hood ECU
The PIC24HJ64GP502-H/SO's -40C to +150C H temperature range and AEC-Q100 qualification make it well suited for under-hood automotive control modules such as engine fans, water pumps, and HVAC actuators. Its integrated ECAN peripheral at 1 Mbit/s enables body-network communication with the vehicle CAN bus, and the 12-bit ADC with simultaneous sampling supports accurate sensor reads across -40C cold-start and +150C thermal soak. With 20 MIPS of throughput and 8 KB SRAM, the part can run CAN stack, sensor fusion, and actuator PWM loops concurrently without CPU starvation.
Recommended
BLDC Motor Control
The PIC24HJ64GP502-H/SO drives three-phase brushless DC motors in pumps, fans, and e-bike controllers via its three 16-bit timers that can be paired into a 32-bit timer for high-resolution PWM at 20 kHz switching frequency. The 8-channel DMA offloads ADC sample transfer to SRAM, freeing CPU cycles for commutation logic and current-mode control. Hall-sensor or back-EMF zero-cross detection uses the integrated comparators and ADC inputs. The 28-SOIC package footprint is the same as the lower-density PIC24HJ32GP202, easing PCB reuse across product variants.
Recommended
Industrial Sensor Node with CAN
Industrial sensor nodes on CANopen or DeviceNet networks benefit from the PIC24HJ64GP502-H/SO's ECAN peripheral, which implements Bosch CAN 2.0B active mode with 16 acceptance filters for selective message acceptance. The 64 KB Flash holds the CANopen stack plus application logic, while the 8 KB SRAM buffers CAN message queues. The H temperature grade lets the same firmware deploy in factory-floor cabinets and outdoor enclosures. The 21 GPIO and 12-bit ADC support multi-channel analog sensing (pressure, temperature, flow) and digital I/O expansion.
Recommended
Uninterruptible Power Supply Controller
In UPS front-end controllers, the PIC24HJ64GP502-H/SO reads battery voltage and current via its 12-bit ADC, manages inverter PWM via three 16-bit timers, and communicates with the host MCU over UART or SPI. The DMA controller streams ADC samples into SRAM buffers at 500 ksps without CPU intervention, supporting real-time RMS and harmonic analysis of the AC waveform. The -40C to +150C H grade supports the thermal environment of a sealed battery cabinet with limited airflow.
Recommended
HVAC Variable-Speed Fan Controller
The PIC24HJ64GP502-H/SO implements closed-loop RPM control for variable-speed fans in HVAC and refrigeration systems, using the 12-bit ADC to read tachometer feedback and three PWM outputs to drive the BLDC motor. ECAN provides building-automation connectivity (BACnet, Modbus over CAN), and the H grade withstands the +85C ambient at the fan housing. The 28-SOIC package solders to a standard reflow profile and is compatible with conformal coating for moisture protection.
Recommended
Solar Inverter DC-DC Stage
The PIC24HJ64GP502-H/SO controls the DC-DC boost stage in a solar micro-inverter, regulating MPPT (Maximum Power Point Tracking) by sampling PV panel voltage and current via the 12-bit ADC and adjusting the PWM duty cycle. The DMA streams ADC samples for perturb-and-observe or incremental-conductance MPPT algorithms. ECAN or RS-485 (via UART) communicates with the central inverter controller. The H temperature grade supports the +70C ambient inside the inverter enclosure with passive cooling.
Recommended
Recommended Products Summary
Engineering reference data for PIC24HJ64GP502-H/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24HJ64GP502-I/SO | PIC24HJ128GP502-H/SO | PIC24HJ128GP502-I/SO | PIC24HJ32GP202-I/SO | dsPIC33FJ64GP802-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | |
| Core / Architecture | PIC24H 16-bit 20 MIPS | PIC24H 16-bit 20 MIPS | PIC24H 16-bit 20 MIPS | PIC24H 16-bit 20 MIPS | dsPIC33F 16-bit 40 MIPS with DSP | |
| Program Memory (Flash) | 64 KB | 64 KB | 128 KB | 32 KB | 64 KB | |
| Data Memory (SRAM) | 8 KB | 8 KB | 16 KB | 4 KB | 8 KB | |
| Temperature Grade | -40C to +150C (H) | -40C to +85C (I) | -40C to +150C (H) | -40C to +85C (I) | -40C to +85C (I) | |
| ECAN Peripheral | Yes | Yes | Yes | No | Yes | |
| Automotive (AEC-Q100) | Yes (H grade) | No (I grade) | Yes (H grade) | No | No | |
| Approx. Qty-1 Price | $7.85 | $6.95 | $9.20 | $5.85 | $8.45 |
Key Differentiators
- Extended H temperature grade for automotive (vs PIC24HJ64GP502-I/SO)
- Larger Flash for field-upgradeable firmware (vs PIC24HJ32GP202-I/SO)
- Higher density available in same package (vs PIC24HJ128GP502-H/SO)
- Same 28-SOIC pinout as dsPIC33F family (vs dsPIC33FJ64GP802-I/SO)
Design Notes
Decouple VDD and AVDD separately with a 10 uF bulk capacitor and a 0.1 uF ceramic capacitor placed within 5 mm of each supply pin. The PIC24HJ64GP502-H/SO is a CMOS device with rapid edge rates; insufficient decoupling causes VDD ringing that can trigger spurious ADC reads. For AEC-Q100 designs add a ferrite bead between the digital and analog supply rails to suppress high-frequency noise injection from the DMA bus switching.
Estimated: the PIC24HJ64GP502-H/SO in the 28-SOIC package has a junction-to-ambient thermal resistance (theta_JA) of approximately 60 C/W on a 1-oz 4-layer JEDEC test board. At full 40 MHz operation the dynamic supply current is roughly 30 mA, dissipating 0.1 W at 3.3 V, which gives a junction temperature rise of about 6 C above ambient - well within the +150C H-grade limit. No external heatsink is required.
Keep the analog input traces (AN0 through AN5, plus the comparator inputs) short and routed away from the high-speed digital lines such as PWM outputs and the ECAN TX/RX traces. Use a single-point ground star or a ground plane with a single bridge beneath the IC to avoid ground loops that introduce offset errors in the 12-bit ADC. Place the decoupling capacitors on the same side as the IC and use vias directly to the power and ground planes.
Do not leave MCLR floating; the PIC24HJ64GP502-H/SO requires a pull-up to VDD (typically 10 kohm) on the MCLR pin to allow normal operation. The PGEC1/PGED1 pins are the ICSP programming interface - they must remain accessible on the PCB or via test points. When migrating firmware from the PIC24HJ64GP502-I/SO to the -H variant, verify that peripherals calibrated at +25C still meet timing specifications across the -40C to +150C range; the ECAN oscillator tolerance is especially sensitive to temperature.
When routing ECAN signals to an external transceiver such as the MCP2551, keep the CANH and CANL traces as a differential pair with 120 ohm characteristic impedance and matched length (within 5 mm). Add a 120 ohm termination resistor at each end of the bus. The internal ECAN peripheral supports up to 1 Mbit/s, but bus integrity depends on PCB layout - differential skew above 5 ns/cm can cause bit errors at 500 kbit/s and above.
Compliance Information
RoHS compliant and lead-free per Microchip product page. AEC-Q100 qualified via the H temperature grade (-40C to +150C).
