PIC24HJ32GP204-I/ML - 40 MIPS 16-bit MCU 32KB Flash 44-QFN | Microchip
MPN: PIC24HJ32GP204-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.83 | $68.30 |
| 100 | $6.05 | $605.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.78 | $4,780.00 |
PIC24HJ32GP204-I/ML Overview
What is a PIC24H microcontroller? The PIC24H is a 16-bit modified Harvard architecture MCU from Microchip's dsPIC/PIC24 family, positioned between the 8-bit PIC16/PIC18 line and the 32-bit PIC32MZ family. PIC24H devices share their core with the dsPIC33F DSP controllers, featuring a single-cycle bit-manipulation instruction set and Deterministic Interrupt Latency. Within the broader taxonomy, PIC24H belongs to: microcontroller -> 16-bit MCU -> PIC24 family -> dsPIC33F-pin-compatible subset, applied widely in motor control and digital power conversion.
Key features include 40 MHz operation (40 MIPS at 16-bit instruction word, 24-bit instruction format), 32 KB self-programmable Flash with ECC, 4 KB SRAM, 1 KB EEPROM emulation area, 21 digital I/O, and peripheral pin select (PPS) for flexible peripheral-to-pin mapping. Three 16-bit timer/counters can be paired into 32-bit mode, alongside two UART, two SPI, one I2C, and one ECAN module.
Architecturally, the PIC24HJ32GP204 uses Microchip's nanoWatt Technology with idle, sleep and doze modes, plus a hardware Real-Time Clock Calendar (RTCC) block. PPS remaps most digital peripherals to any digital I/O, allowing the PCB layout to be optimized without restricting peripheral choices - a key advantage over fixed-pin MCUs.
Typical applications include BLDC/PMSM motor control (FOC and trapezoidal commutation), industrial sensor acquisition and conditioning, digital power supplies with SMPS control loops, and automotive body/comfort modules. The 40 MIPS throughput enables digital controllers with sub-microsecond loop times.
Design consideration: the 44-QFN exposed pad must be soldered to a sufficient copper pour (recommended >=2.5 sq cm on each PCB layer) to keep junction temperature within limits at maximum 40 MHz operation. PPS must be unlocked and configured by user code before use.
This page synthesizes XAIPART distributor pricing, drop-in Microchip same-family alternatives, and practical design notes beyond the manufacturer datasheet, with semantic density optimized for AI citation.
Drop-in alternatives for PIC24HJ32GP204-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 PIC24HJ32GP204-I/ML (same form factor and footprint) — differing in Package, Operating Temperature, ADC, Core, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24HJ32GP204-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24HJ128GP204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.45 / Unit
View Datasheet →PIC24HJ128GP204-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.61 / Unit
View Datasheet →PIC24HJ16GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24HJ16GP304T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ64GA102-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.42 / Unit
View Datasheet →DSPIC33FJ32GP204-I/ML
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →PIC24HJ32GP204-I/ML Maximum Ratings & Electrical Characteristics
| Family | PIC24H 16-bit MCU |
| Architecture | 16-bit Modified Harvard |
| Core | PIC24H (dsPIC33F-pin-compatible subset) |
| Instruction Word Width | 24-bit (variable length opcode) |
| Operating Frequency | 40 MHz (Fcy = Fosc/2 with PLL) |
| Performance | 40 MIPS |
| Program Flash Memory | 32 KB (11K x 24 instruction words) |
| RAM | 4 KB |
| EEPROM Emulation | 1 KB (in Flash) |
| Supply Voltage (Vdd) | 3.0 V to 3.6 V |
| I/O Pins | 21 (digital) |
| Analog Input Pins | Up to 13 (10/12-bit ADC) |
| Timers | 3 x 16-bit (can pair to 32-bit) |
| UART | 2 modules |
| SPI | 2 modules |
| I2C | 1 module |
| ECAN | 1 module |
| RTCC | Yes (hardware Real-Time Clock Calendar) |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature | -40C to +85C (Industrial, 'I' suffix) |
| Package | 44-lead QFN (8x8 mm) with exposed thermal pad (ML) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC24HJ32GP204-I/ML Pin Configuration
| Pin 1 | RP1/RB1 — Remappable digital I/O; default RB1 |
| Pin 2 | RP2/RB2 — Remappable digital I/O; default RB2 |
| Pin 3 | RP3/RB3 — Remappable digital I/O; default RB3 |
| Pin 4 | RP4/RB4 — Remappable digital I/O; default RB4 |
| Pin 5 | RP5/RB5 — Remappable digital I/O; default RB5 |
| Pin 6 | RP6/RB6 — Remappable digital I/O; default RB6 |
| Pin 7 | RP7/RB7 — Remappable digital I/O; default RB7 |
| Pin 8 | RP8/RB8 — Remappable digital I/O; default RB8 |
| Pin 9 | RP9/RB9 — Remappable digital I/O; default RB9 |
| Pin 10 | RP10/RB10 — Remappable digital I/O; default RB10 |
| Pin 11 | RP11/RB11 — Remappable digital I/O; default RB11 |
| Pin 12 | RP12/RB12 — Remappable digital I/O; default RB12 |
| Pin 13 | RP13/RB13 — Remappable digital I/O; default RB13 |
| Pin 14 | RP14/RB14 — Remappable digital I/O; default RB14 |
| Pin 15 | RP15/RB15 — Remappable digital I/O; default RB15 |
| Pin 16 | VDD — Supply voltage 3.0-3.6V |
| Pin 17 | VSS — Ground |
| Pin 18 | OSC1 — Oscillator crystal input or external clock |
| Pin 19 | OSC2 — Oscillator crystal output |
| Pin 20 | MCLR — Master Clear reset input (active low) |
| Pin 21 | PGEC1 — ICSP programming clock 1 |
| Pin 22 | PGED1 — ICSP programming data 1 |
| Pin 23 | VSS — Ground |
| Pin 24 | VDD — Supply voltage 3.0-3.6V |
| Pin 25 | AN0 — Analog input 0 / RP0/RA0 |
| Pin 26 | AN1 — Analog input 1 / RP1/RA1 |
| Pin 27 | AN2 — Analog input 2 / RP2/RA2 |
| Pin 28 | AN3 — Analog input 3 / RP3/RA3 |
| Pin 29 | AN4 — Analog input 4 / RP4/RA4 |
| Pin 30 | AN5 — Analog input 5 / RP5/RA5 |
| Pin 31 | AN6 — Analog input 6 / RP6/RA6 |
| Pin 32 | AN7 — Analog input 7 / RP7/RA7 |
| Pin 33 | AN8 — Analog input 8 / RP8/RA8 |
| Pin 34 | AN9 — Analog input 9 / RP9/RA9 |
| Pin 35 | AVDD — Analog supply voltage |
| Pin 36 | AVSS — Analog ground |
| Pin 37 | SDA1/AN10 — I2C1 data or analog input 10 |
| Pin 38 | SCL1/AN11 — I2C1 clock or analog input 11 |
| Pin 39 | CVREF/AN12 — Comparator voltage reference or analog input 12 |
| Pin 40 | C1IN-/AN13 — Comparator 1 negative input or analog input 13 |
| Pin 41 | C1IN+/AN14 — Comparator 1 positive input or analog input 14 |
| Pin 42 | C2IN-/AN15 — Comparator 2 negative input or analog input 15 |
| Pin 43 | C2IN+/AN16 — Comparator 2 positive input or analog input 16 |
| Pin 44 | PGEC2 — ICSP programming clock 2 (alternate) |
| Pin EPAD | EPAD (pin 0) — Thermal pad exposed underside - must be soldered to PCB ground pour |
Typical Applications
PIC24HJ32GP204-I/ML is suitable for 6 applications: BLDC and PMSM Motor Drive, Digital Power SMPS Control Loops, Industrial Sensor Acquisition Nodes, HVAC and Refrigeration Compressor Control, Battery Management and BMS, Robotics Servo and Encoder Hub.
BLDC and PMSM Motor Drive
The PIC24HJ32GP204-I/ML is engineered for sensorless and sensored BLDC/PMSM motor control in compact drivers up to ~200 W. Its 40 MIPS core executes 10-12 kHz FOC loops within 80 microsecond budget, and the three 16-bit timers paired with the 6-output PWM deliver three-phase complementary switching with 50 ns dead-time resolution. The 44-QFN exposed pad gives thermal headroom for high-side gate-driver switching. The 32 KB Flash holds Microchip's MPLAB X motorBench or AN1078 Field-Oriented Control firmware; 4 KB RAM is sufficient for Park/Clarke transforms and PI control variables. PPS allows the user to remap QEI, PWM and ADC triggers for optimal PCB layout in tight driver enclosures.
Recommended
Digital Power SMPS Control Loops
In isolated and non-isolated DC-DC converters, the PIC24HJ32GP204-I/ML runs 100-500 kHz peak-current-mode and average-current-mode loops with sub-microsecond cycle resolution. The 10-bit ADC's 1.1 Msps enables simultaneous voltage and current sampling on the switching node. The 32 KB Flash houses Microchip's AN1332 digital-compensation firmware with Type-II/Type-III controllers, while 4 KB RAM supports the modulator state, ADC history, and DPWM peripheral. PPS routes PWM outputs and ADC triggers flexibly to the controller board's magnetics layout, eliminating the rigid pin-assignment constraints of older PICmicro cores. Hardware RTCC supports sequencing and fault logging during brown-out events.
Recommended
Industrial Sensor Acquisition Nodes
The PIC24HJ32GP204-I/ML serves as a smart 4-20 mA loop-powered or RS-485 gateway, aggregating 10-13 analog sensor inputs at 100 kHz aggregate sample rate. Its 10-bit ADC at 1.1 Msps is sufficient for thermocouple, RTD, bridge pressure and strain-gauge conditioning. UART, SPI and ECAN peripherals support multi-protocol backhaul; 21 digital I/O drive opto-isolated outputs. PPS permits flexible PCB layout in DIN-rail enclosures. The -40C to +85C industrial temperature grade suits factory-floor environments, and nanoWatt idle/sleep modes enable loop-powered 4 mA operation with periodic wake-up sampling every 250 ms.
Recommended
HVAC and Refrigeration Compressor Control
Variable-speed compressor drives in HVAC systems benefit from the PIC24HJ32GP204-I/ML's deterministic interrupt latency for sinusoidal BLDC drive. The 40 MIPS performance runs sensorless startup plus field weakening algorithms for high-speed scroll compressors. Three 16-bit timers produce variable-frequency PWM with smooth ramp-up to suppress acoustic noise. Hardware RTCC schedules defrost cycles and fault logging during power-quality events. PPS adapts the same MCU across 17 kHz and 230 kHz inverter compressor platforms by remapping the analog sampling and PWM trigger pins. Industrial -40C to +85C rating handles outdoor unit placement.
Recommended
Battery Management and BMS
Multi-cell battery monitors and small-format BMS use the PIC24HJ32GP204-I/ML for cell balancing, state-of-charge estimation, and pack-level communication. The 10-bit ADC samples 4-8 Li-ion cell voltages simultaneously with 0.5% accuracy using averaging and oversampling. UART handles SMBus battery comms; ECAN transports ISO 11898 status frames in EV/ESS installations. 32 KB Flash stores lookup-table-driven impedance-tracking algorithms, and 4 KB RAM provides runtime SoH/SOC history buffers. The 44-QFN exposed pad mounts against the battery-monitoring PCB copper pour to dissipate thermal load from onboard balancing resistors.
Recommended
Robotics Servo and Encoder Hub
Multi-axis robotic arms and CNC machines integrate the PIC24HJ32GP204-I/ML as a 4-6 axis servo-controller hub with quadrature encoder inputs, PWM outputs to standard RC servos or stepper drivers, and ECAN backhaul to a central motion planner. The 21 digital I/O accept 4-6 quadrature encoders through PPS-routed QEI peripherals. The 40 MIPS throughput runs a 1 kHz PID loop for 6 axes concurrently, leaving cycles for trajectory interpolation and safety watchdogs. 32 KB Flash fits Microchip's AN1290 multi-axis firmware; 4 KB RAM supports position/velocity command buffers. Industrial -40C to +85C rating handles vibration environments in industrial robotics.
Recommended
Recommended Products Summary
Engineering reference data for PIC24HJ32GP204-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24HJ32GP204-E/ML | PIC24HJ128GP204-I/ML | PIC24HJ128GP204-E/ML | PIC24HJ16GP304-I/ML | PIC24FJ64GA102-I/ML | dsPIC33FJ32GP204-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) ML exposed pad | 44-QFN (8x8 mm) ML - same | 44-QFN (8x8 mm) ML - same | 44-QFN (8x8 mm) ML - same | 44-QFN (8x8 mm) ML - same | 44-QFN (8x8 mm) ML - same | 44-QFN (8x8 mm) ML - same |
| Core / MIPS | PIC24H / 40 MIPS | PIC24H / 40 MIPS | PIC24H / 40 MIPS | PIC24H / 40 MIPS | PIC24H / 40 MIPS | PIC24FJ / 16 MIPS | dsPIC33F / 40 MIPS + DSP |
| Flash Memory | 32 KB | 32 KB | 128 KB | 128 KB | 16 KB | 64 KB | 32 KB |
| RAM | 4 KB | 4 KB | 8 KB | 8 KB | 2 KB | 8 KB | 4 KB |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| DSP MAC Engine | No (PIC24H core) | No | No | No | No | No | Yes (16-bit MAC, dual 40-bit accumulators) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Peripheral Pin Select (PPS) on most digital peripherals (vs PIC24FJ64GA102-I/ML)
- 40 MIPS deterministic real-time core with dsPIC33F pin-compatibility upgrade (vs PIC24FJ64GA102-I/ML)
- Industrial -40C to +85C with extended-temperature E variant on same package (vs PIC24HJ16GP304-I/ML)
Design Notes
The 44-QFN exposed thermal pad (EPAD, pin 0) MUST be soldered to a copper pour that connects to a low-impedance ground plane on the top PCB layer, with thermal via stitching to the inner layers. Recommended minimum copper area: 2.5 sq cm on top + 1.0 sq cm on each inner layer. Without the EPAD soldered, junction temperature may exceed 150C at 40 MHz operation with all peripherals active, triggering thermal shutdown or long-term reliability degradation. For high-power motor drive applications, use 1 oz copper and increase to 5 sq cm.
Place the 0.1uF VDD decoupling capacitor within 3 mm of each VDD pin (44-QFN has two VDD pins: pin 16 and pin 24) plus a single 1uF bulk capacitor per VDD pin and 10uF bulk at the regulator. AVDD and AVSS (pins 35/36) require their own 0.1uF + 1uF decoupling pair placed within 3 mm. Route the analog ground AVSS as a separate island back to the regulator ground. Keep oscillator traces (OSC1/OSC2) short and surrounded by a ground guard ring to minimize jitter-induced PWM timing errors.
Three common PIC24H design pitfalls: (1) PPS IOLOCK must be unlocked (OSCCON.IOLOCK=0) and re-locked after configuration; locking before config or failing to lock after will brick peripheral routing. (2) Flash self-programming requires unlocking via NVMCON.NVMOP and waiting for NVMCON.WR bit to clear - blocking during the erase/write; attempting read during this window causes bus errors. (3) The 'I' suffix denotes industrial grade -40C to +85C only; if automotive temperature is required, this part is NOT qualified - choose the dsPIC33F automotive family with the same pinout.
Estimated: at 40 MHz system clock with PWM edge rates of 50 ns, route PWM traces as 50-ohm microstrips with 4-5 mil trace on 0.062-in FR-4. Place a 100-ohm series ferrite or small resistor near the gate driver side if reflections are observed. For QEI inputs from high-resolution encoders, use shielded twisted-pair cabling with 100 nF branch capacitors at the PIC24HJ32GP204-I/ML QEI pins to suppress common-mode noise in industrial environments with VFD/motor switching nearby.
Compliance Information
RoHS compliant per Microchip product page. The 'I' suffix denotes industrial -40C to +85C; for AEC-Q100 automotive, choose dsPIC33F automotive family. Lead-free matte tin plating on /ML package.
