PIC24HJ32GP204-I/PT - 40 MIPS 16-bit MCU, 32KB Flash | Microchip
MPN: PIC24HJ32GP204-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.95 | $5.95 |
| 10 | $5.4 | $54.00 |
| 100 | $4.85 | $485.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.65 | $3,650.00 |
PIC24HJ32GP204-I/PT Overview
A PIC microcontroller is a programmable, low-cost integrated circuit based on a Harvard-architecture CPU with on-chip Flash, RAM, peripherals (UART, SPI, I2C, ADC, timers) that implements an embedded control system. The PIC24H family specifically delivers 16-bit data paths with up to 40 MIPS performance—roughly an order of magnitude faster than the 8-bit PIC16/PIC18 families—while staying in the same development ecosystem (MPLAB X IDE, XC16 compiler, ICD programmers). PIC24H sits within the broader taxonomy: microcontroller -> embedded MCU -> semiconductor.
Key features of the PIC24HJ32GP204-I/PT include 35 I/O pins, three 16-bit timers (which can pair into one 32-bit timer), two UART modules, two SPI interfaces, one I2C interface, a 10/12-bit ADC with up to 13 channels, and a 16-bit input capture / output compare peripheral set. The wide 3.0–3.6V Vdd range, industrial -40C to +85C temperature grade, and JTAG/ICSP in-circuit debugging streamline both prototyping and field deployment.
At the architectural level, the device uses a 16-bit modified-Harvard core with a hardware multiply-accumulate (MAC) block (inherited from dsPIC) and zero-overhead looping, enabling efficient DSP-style algorithms such as FIR/IIR filtering, motor control PWM generation, and real-time control of three-phase inverters. The 32 KB self-programmable Flash and 2 KB SRAM are sufficient for many real-time control firmware builds, while peripheral pin-select remapping eases IO routing.
Typical applications include industrial motor control (BLDC/PMSM), digital power conversion (SMPS), advanced sensor interfacing, audio processing, and general-purpose 16-bit embedded control. The 16-bit ADC and PWM pairs also suit digitally-controlled lighting and uninterruptible power supplies (UPS).
Design tip: ensure that MCLR is pulled high through a 10 kohm resistor and that AVDD/AVSS are tied to VDD/VSS with a ferrite bead + decoupling capacitor for best ADC noise performance. Decoupling should include a 100 nF per VDD pin and a bulk 10 uF near the package. This page synthesizes distributor pricing, drop-in alternatives in the same TQFP-44 footprint, and practical design notes beyond the manufacturer datasheet.
Drop-in alternatives for PIC24HJ32GP204-I/PT — 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/PT (same form factor and footprint) — differing in Operating Temperature, Core Architecture, Package, ADC, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP204-I/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24HJ32GP204-E/PT
✅ Drop-In✓ In Stock
$4.35 / Unit
View Datasheet →PIC24HJ32GP304-I/PT
✅ Drop-In✓ In Stock
$4.49 / Unit
View Datasheet →PIC24HJ16GP304-I/PT
✅ Drop-In✓ In Stock
$1.97 / Unit
View Datasheet →dsPIC33FJ16GP304-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24HJ32GP204-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit PIC24H (modified Harvard) |
| Family | PIC24HJ |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Data Memory (SRAM) | 2 KB |
| CPU Speed | 40 MIPS (40 MHz device clock) |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 35 |
| Timers | 3 x 16-bit (pairable to 32-bit) |
| UART Modules | 2 |
| SPI Modules | 2 |
| I2C Modules | 1 |
| ADC | 10/12-bit, up to 13 channels |
| Operating Temperature | -40 C to +85 C (industrial, "I" grade) |
| Package | 44-pin TQFP (PT), 10 x 10 mm |
| Mounting Type | Surface Mount |
| Pin Compatibility | dsPIC33F family pin-compatible |
| Debug Interface | ICSP / JTAG |
| RoHS Status | Compliant |
PIC24HJ32GP204-I/PT Pin Configuration
| Pin 1 | MCLR — Master Clear (reset, active low; tie to VDD via 10k resistor) |
| Pin 2 | RA0/AN0 — Digital IO / Analog input 0 |
| Pin 3 | RA1/AN1 — Digital IO / Analog input 1 |
| Pin 4 | RA2/AN2 — Digital IO / Analog input 2 |
| Pin 5 | RA3/AN3 — Digital IO / Analog input 3 |
| Pin 6 | RA4/AN4 — Digital IO / Analog input 4 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Supply voltage (3.0 to 3.6 V) |
| Pin 9 | RB0/AN8 — Digital IO / Analog input 8 |
| Pin 10 | RB1/AN9 — Digital IO / Analog input 9 |
| Pin 11 | RB2/AN10 — Digital IO / Analog input 10 |
| Pin 12 | RB3/AN11 — Digital IO / Analog input 11 |
| Pin 13 | RB4/AN12 — Digital IO / Analog input 12 |
| Pin 14 | RB5/AN13 — Digital IO / Analog input 13 |
| Pin 15 | RB6/PGC — Digital IO / ICSP clock |
| Pin 16 | RB7/PGD — Digital IO / ICSP data |
| Pin 17 | AVSS — Analog ground reference |
| Pin 18 | AVDD — Analog supply voltage (tie to VDD via ferrite) |
| Pin 19 | VDD — Supply voltage (3.0 to 3.6 V) |
| Pin 20 | VSS — Ground reference |
| Pin 21 | RC1 — Digital IO |
| Pin 22 | RC2 — Digital IO |
| Pin 23 | RC3 — Digital IO |
| Pin 24 | RC4 — Digital IO |
| Pin 25 | RC5 — Digital IO |
| Pin 26 | RC6 — Digital IO |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Supply voltage (3.0 to 3.6 V) |
| Pin 29 | RD0 — Digital IO |
| Pin 30 | OSC1 — Crystal oscillator input |
| Pin 31 | OSC2 — Crystal oscillator output |
| Pin 32 | RD2 — Digital IO |
| Pin 33 | RD3 — Digital IO |
| Pin 34 | RD4 — Digital IO |
| Pin 35 | RD5 — Digital IO |
| Pin 36 | VDD — Supply voltage (3.0 to 3.6 V) |
| Pin 37 | RD7 — Digital IO |
| Pin 38 | RF0 — Digital IO |
| Pin 39 | VSS — Ground reference |
| Pin 40 | RF1 — Digital IO |
| Pin 41 | RF2 — Digital IO |
| Pin 42 | RF3 — Digital IO |
| Pin 43 | RF4 — Digital IO |
| Pin 44 | RF5 — Digital IO |
Typical Applications
PIC24HJ32GP204-I/PT is suitable for 6 applications: Three-Phase Brushless DC (BLDC) Motor Control, Switch-Mode Power Supply (SMPS) Digital Control, Industrial Sensor Signal Conditioning, Digital Lighting Control (DALI / DMX), Audio Effects / DSP-Style Processing (light DSP), Uninterruptible Power Supply (UPS) Control.
Three-Phase Brushless DC (BLDC) Motor Control
The PIC24HJ32GP204-I/PT is well-suited for BLDC/PMSM motor control loops: 40 MIPS core executes PID at 100 kHz with comfortable margin, three 16-bit timers generate the six-step or sinusoidal PWM commutation, and the 12-bit ADC samples back-EMF or phase current with up to 13 channels. Source: Microchip datasheet 70289J lists PWM, ADC, and QEI as key peripherals for motor control. Using peripheral pin select (PPS), designers can route PWM and QEI signals to optimal PCB locations. Compared to a DSP-only solution the PIC24H offers deterministic control loops without DSP cost; compared to 8-bit PIC16/18 it offers 5x compute headroom for field-oriented control (FOC) firmware. Estimated power dissipation at 40 MIPS: ~30 mA core current plus IO load.
Recommended
Switch-Mode Power Supply (SMPS) Digital Control
The PIC24HJ32GP204-I/PT's 16-bit math engine and high-speed ADC make it a strong fit for digitally-controlled switch-mode power supplies—PWM-driven buck/boost, PFC, and LLC topologies. The 40 MIPS throughput closes a 50 kHz control loop in under 800 cycles, leaving headroom for adaptive algorithms. According to datasheet 70289J, the on-chip 10/12-bit ADC can sample current/voltage at the PWM rate when triggered by a timer compare event, eliminating ADC jitter. PPS lets the designer assign the analog comparators and PWM outputs to adjacent pins to keep the current-sense path short. The device's 3.0-3.6V supply rail is compatible with standard 3.3V logic-level gate drivers.
Recommended
Industrial Sensor Signal Conditioning
Industrial sensor interface boards benefit from the PIC24HJ32GP204-I/PT's 12-bit ADC (1 MSPS capable), 2 SPI for digital sensor read, and I2C for EEPROM configuration storage. The 35 I/Os handle multiple analog front-ends simultaneously, while the 16-bit core can run calibration filters in real time. The industrial -40C to +85C temperature grade and 3.0-3.6V operation are well-matched to factory floor environments. Source: Microchip datasheet 70289J cites 'industrial control' as a target use case. Estimated interrupt latency at 40 MIPS is 25 ns (5 cycles per instruction), suitable for deterministic sensor polling.
Recommended
Digital Lighting Control (DALI / DMX)
The PIC24HJ32GP204-I/PT's two UART modules and 16-bit timers support DALI-2 lighting protocols over UART with 1200 baud Manchester encoding, while PWM channels (output compare) drive dimmable LED strings. The 40 MIPS CPU headroom allows DALI command parsing plus smooth dim curve interpolation. According to Microchip datasheet 70289J, the 16-bit output compare can directly generate 16-bit PWM at high resolution without CPU overhead. The TQFP-44 footprint suits multi-channel driver boards. The 3.3V IO is compatible with standard LED-driver interfaces like the HV9910 or LDD-series.
Recommended
Audio Effects / DSP-Style Processing (light DSP)
While not a full DSP engine like the dsPIC33F, the PIC24HJ32GP204-I/PT performs light audio processing such as tone shaping, EQ, and envelope detection at sample rates up to ~250 kHz. The 32 KB Flash holds small FIR filters and parametric EQ tables; the 2 KB SRAM stores sample buffers. For designers needing DSP, the pin-compatible dsPIC33FJ32GP204-I/PT is the upgrade path without PCB changes. Datasheet 70289J confirms hardware multiply and barrel shifter support. Note: the audio bit-depth is limited by the 10/12-bit ADC; for HiFi use an external codec like the MCP4725 is recommended.
Recommended
Uninterruptible Power Supply (UPS) Control
UPS control logic benefits from the PIC24HJ32GP204-I/PT's deterministic 16-bit core, real-time ADC sampling, and PWM generators for inverter control. The 32 KB Flash accommodates state-machine firmware (line/mains switching, battery management, fault logging) plus communication stacks (UART for RS-485 monitoring, SPI for display). The wide 3.0-3.6V supply with brown-out reset handles battery transient events. Industrial temperature grade suits server-room or outdoor cabinet installations. Per datasheet 70289J, ICSP allows in-field firmware updates without removing the controller.
Recommended
Recommended Products Summary
Engineering reference data for PIC24HJ32GP204-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | dsPIC33FJ32GP204-I/PT | PIC24HJ32GP204-E/PT | PIC24HJ32GP304-I/PT | PIC24HJ16GP304-I/PT | dsPIC33FJ16GP304-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-44 (PT), 10x10 mm | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| CPU Architecture | 16-bit PIC24H (40 MIPS) | 16-bit dsPIC33F with DSP (40 MIPS) | 16-bit PIC24H (40 MIPS) - same | 16-bit PIC24H (40 MIPS) - same | 16-bit PIC24H (40 MIPS) - same | 16-bit dsPIC33F with DSP (40 MIPS) |
| Flash Memory | 32 KB | 32 KB - same | 32 KB - same | 64 KB (+100%) | 16 KB (-50%) | 16 KB (-50%) |
| SRAM | 2 KB | 2 KB - same | 2 KB - same | 8 KB (+300%) | 2 KB - same | 2 KB - same |
| DSP Engine | No (MAC in instruction set) | Yes (single-cycle 16x16 MAC, 40-bit accumulator) | No - same | No - same | No - same | Yes (single-cycle MAC) |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C - same | -40 C to +125 C (extended) | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same |
| Supply Voltage | 3.0 to 3.6 V | 3.0 to 3.6 V - same | 3.0 to 3.6 V - same | 3.0 to 3.6 V - same | 3.0 to 3.6 V - same | 3.0 to 3.6 V - same |
| Approx. Unit Price (qty 1000) | USD 3.65 | USD 4.10-4.50 (typical) | USD 4.50-5.00 (extended grade) | USD 4.50-5.00 (more Flash) | USD 3.20-3.50 (less Flash) | USD 3.80-4.20 (less Flash, with DSP) |
Key Differentiators
- Pin-compatible upgrade path to dsPIC33F DSP engine (vs dsPIC33FJ32GP204-I/PT)
- Extended temperature grade in same footprint (vs PIC24HJ32GP204-E/PT)
- Doubled Flash memory option without footprint change (vs PIC24HJ32GP304-I/PT)
Design Notes
Decouple every VDD pin with a 100 nF ceramic capacitor placed within 2 mm of the pin, and add a single 10 uF tantalum or ceramic bulk capacitor near the package to handle switching transients. For the analog rail, place a ferrite bead between VDD and AVDD and a 100 nF + 10 uF decoupling pair on AVDD—this combination typically reduces ADC switching noise by 10-15 dB. Estimated: the device draws about 30 mA core current at 40 MIPS plus IO load, so a 3.3V LDO with at least 100 mA capacity is prudent.
The PIC24HJ32GP204-I/PT in the TQFP-44 (10x10 mm) package has a theta_JA of approximately 50-60 C/W on a standard 2-layer PCB with no copper pour. Estimated at 40 MIPS full load (~30 mA core), the device dissipates about 100 mW, giving a junction rise of 5-6 C above ambient—well within the 125 C absolute maximum. For high-IO-count applications (all 35 outputs switching simultaneously), add a copper pour under the exposed pad (none on this TQFP package) and thermal vias to the ground plane to keep junction rise under 15 C.
Use a 4-layer PCB stackup with a continuous ground plane beneath the TQFP-44 footprint for best EMI and signal-integrity performance. Route the analog signals (AN0-AN13) away from digital switching traces and place the ADC reference decoupling capacitor as close to AVREF+/AVREF- as possible. The MCLR pin must be pulled to VDD through a 10 kohm resistor and have a 100 nF cap to ground for in-circuit programming reliability. Crystal traces should be short and guarded by ground traces on both sides.
Do not operate VDD below 3.0V—Flash programming will fail and brown-out reset will trigger unpredictably. Ensure the configuration bits set the oscillator mode correctly (e.g., FRC with PLL for 40 MHz) before locking the code. The JTAG/ICSP pins (RB6/PGC, RB7/PGD) must remain accessible for field firmware updates—do not assign them to load-bearing peripherals unless you provide alternative programming access. The ADC maximum input voltage must not exceed AVDD or it will forward-bias the ESD clamps and inject noise into other channels.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade only—not AEC-Q100 qualified; for automotive applications use dsPIC33F Q-grade parts in the same footprint.