PIC24FJ32GP205-I/M4 - 32KB ECC Flash, USB XLP MCU 48-UQFN
MPN: PIC24FJ32GP205-I/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.42 | $2.42 |
| 10 | $2.18 | $21.80 |
| 100 | $1.95 | $195.00 |
| 500 | $1.74 | $870.00 |
| 1,000 | $1.56 | $1,560.00 |
PIC24FJ32GP205-I/M4 Overview
A 16-bit microcontroller (MCU) is a programmable logic device that balances 8-bit simplicity with 32-bit performance, executing instructions on 16-bit data paths to deliver higher code density and deterministic interrupt response than 8-bit cores. Within the broader taxonomy, the PIC24F family sits between 8-bit PIC MCUs and 32-bit PIC32 parts, making it suitable for applications that require USB connectivity, capacitive touch sensing, or mixed-signal peripheral integration without migrating to ARM-class processors.
Key features include a 32 KB ECC Flash program memory, 8 KB SRAM, hardware USB 2.0 Full-Speed with OTG, multiple Core Independent Peripherals (CIPs) such as configurable logic cells and 24-bit signal routing, a 12-bit A/D converter with up to 500 ksps throughput, and 5V-tolerant I/O. The device also provides multiple low-power sleep modes down to a few hundred nA, real-time clock and calendar (RTCC) with calendar mode, and hardware crypto engines for secure firmware updates.
The PIC24FJ32GP205 architecture uses a Modified Harvard structure with separate program and data paths, an 8-stage pipeline for sustained 16 MIPS throughput, and a wide range of peripherals including multiple UART, SPI, I2C, and PMP/EPMP interfaces. The XLP technology allows dynamic switching between active, idle, and deep-sleep modes with retention, dramatically extending battery life in intermittently active systems.
Typical applications include USB Human Interface Devices (HID), battery-powered data loggers, portable medical telemetry, IoT sensor hubs, and industrial control panels. Designers value its USB-OTG capability for embedded host/device role switching without an external PHY.
When designing with this MCU, route the USB DP/DM differential pair with 90 ohm impedance and place the 48-UQFN exposed pad with adequate thermal vias. Decouple VDD/VUSB pins with 100 nF + 4.7 uF ceramics. The wide -40C to +85C industrial operating range suits outdoor and automotive cabin deployments.
This page synthesizes distributor pricing, drop-in same-package alternatives from the same PIC24FJ family, and practical design notes not aggregated on the manufacturer datasheet.
Drop-in alternatives for PIC24FJ32GP205-I/M4 — 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 PIC24FJ32GP205-I/M4 (same form factor and footprint) — differing in Package, ADC, I/O Pins, Operating Temperature, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GP205-I/M4
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GP205-I/M4
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GP203T-I/M5
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC24FJ256GU406-I/PT
✅ Drop-In✓ In Stock
$2.69 / Unit
View Datasheet →PIC24FJ128GL405-I/M4
✅ Drop-In✓ In Stock
$4.09 / Unit
View Datasheet →PIC24FJ32GP205-I/M4 Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit Modified Harvard |
| Program Flash Memory | 32 KB (11K x 24) with ECC |
| RAM | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| USB Module | USB 2.0 Full-Speed Host/Device/OTG |
| Package | 48-pin UQFN (6x6 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (Industrial, 'I' suffix) |
| Sleep Current (XLP) | Hundreds of nA with RAM retention |
| Core Independent Peripherals (CIPs) | Configurable Logic Cells, 24-bit Signal Routing, CLC, MCCP, SCCP |
| Communication Interfaces | UART, SPI, I2C, PMP/EPMP |
| MSL Level | 3 |
| RoHS Status | Compliant |
PIC24FJ32GP205-I/M4 Pin Configuration
| Pin 1 | RB0/AN0 — Port B bit 0 / ADC analog input 0 |
| Pin 2 | RB1/AN1 — Port B bit 1 / ADC analog input 1 |
| Pin 3 | RB2/AN2 — Port B bit 2 / ADC analog input 2 |
| Pin 4 | RB3/AN3 — Port B bit 3 / ADC analog input 3 |
| Pin 5 | VDD — Positive supply |
| Pin 6 | VSS — Ground |
| Pin 7 | RB4/AN4 — Port B bit 4 / ADC analog input 4 |
| Pin 8 | RB5/AN5 — Port B bit 5 / ADC analog input 5 |
| Pin 9 | RB6/AN6 — Port B bit 6 / ADC analog input 6 |
| Pin 10 | RB7/AN7 — Port B bit 7 / ADC analog input 7 |
| Pin 11 | RC0 — Port C bit 0 |
| Pin 12 | RC1 — Port C bit 1 |
| Pin 13 | RC2 — Port C bit 2 |
| Pin 14 | VUSB — USB transceiver internal supply |
| Pin 15 | D+ — USB D+ differential data line |
| Pin 16 | D- — USB D- differential data line |
| Pin 17 | VBUS — USB VBUS sense input |
| Pin 18 | RC3 — Port C bit 3 |
| Pin 19 | RC4 — Port C bit 4 |
| Pin 20 | RC5 — Port C bit 5 |
| Pin 21 | RC6 — Port C bit 6 |
| Pin 22 | RC7 — Port C bit 7 |
| Pin 23 | VDD — Positive supply |
| Pin 24 | VSS — Ground |
| Pin 25 | RA0 — Port A bit 0 |
| Pin 26 | RA1 — Port A bit 1 |
| Pin 27 | RA2 — Port A bit 2 |
| Pin 28 | RA3 — Port A bit 3 |
| Pin 29 | RA4 — Port A bit 4 |
| Pin 30 | RA5 — Port A bit 5 |
| Pin 31 | RA6 — Port A bit 6 |
| Pin 32 | RA7 — Port A bit 7 |
| Pin 33 | VSS — Ground |
| Pin 34 | VDD — Positive supply |
| Pin 35 | RD0 — Port D bit 0 |
| Pin 36 | RD1 — Port D bit 1 |
| Pin 37 | RD2 — Port D bit 2 |
| Pin 38 | RD3 — Port D bit 3 |
| Pin 39 | RD4 — Port D bit 4 |
| Pin 40 | RD5 — Port D bit 5 |
| Pin 41 | RD6 — Port D bit 6 |
| Pin 42 | RD7 — Port D bit 7 |
| Pin 43 | RE0 — Port E bit 0 |
| Pin 44 | RE1 — Port E bit 1 |
| Pin 45 | RE2 — Port E bit 2 |
| Pin 46 | RE3 — Port E bit 3 |
| Pin 47 | OSCI — Crystal oscillator input |
| Pin 48 | OSCO — Crystal oscillator output |
Typical Applications
PIC24FJ32GP205-I/M4 is suitable for 6 applications: USB HID Human Interface Devices, Battery-Powered Data Loggers, Portable Medical Telemetry, IoT Sensor Hubs and Edge Nodes, Industrial Control Panels and HMI, USB Host Embedded Peripherals.
USB HID Human Interface Devices
The PIC24FJ32GP205-I/M4 is a strong fit for USB HID keyboards, mice, game controllers, and custom input devices. Its integrated Full-Speed USB 2.0 Device controller eliminates the need for an external PHY, while the 16 MIPS core sustains 1 kHz polling rates for low-latency input. The 32 KB Flash holds HID class drivers and custom firmware, and 8 KB RAM supports descriptor buffering. Placed between the USB connector and the user's sensor matrix, with 90 ohm DP/DM routing; the device's USB Suspend current (~few hundred uA) helps battery-powered HID devices meet standby power budgets.
Recommended
Battery-Powered Data Loggers
XLP deep-sleep current in the hundreds of nanoamps makes the PIC24FJ32GP205-I/M4 ideal for intermittent data logging on coin-cell or Li-ion batteries. The 12-bit ADC captures sensor readings while the RTCC schedules wake-ups at intervals from milliseconds to hours. The 32 KB Flash stores compressed logs and the 8 KB RAM buffers between samples. Placed at the heart of a sensor node with a 3V coin cell; the device's RAM retention sleep mode extends shelf life to multi-year deployment versus typical 8-bit MCUs that drain cells within weeks of standby.
Recommended
Portable Medical Telemetry
The PIC24FJ32GP205-I/M4 supports portable medical telemetry such as wireless pulse-oximeter dongles, ambulatory ECG event recorders, and Bluetooth-USB bridge adapters. The USB OTG capability enables both battery-charging roles and data-transfer roles from a single port, while the 16 MIPS core runs simple compression and packetization algorithms in real time. The wide -40C to +85C industrial temperature range suits body-worn applications. Paired with a BLE module over UART, the MCU handles USB host-role tethering to phones and tablets; its XLP sleep modes extend patient-monitoring patch battery life beyond 7 days versus comparable 8-bit designs.
Recommended
IoT Sensor Hubs and Edge Nodes
IoT edge nodes and sensor hubs benefit from the PIC24FJ32GP205-I/M4's combination of USB-OTG, multiple UART/SPI/I2C peripherals, and XLP sleep current. The MCU aggregates data from multiple sensors over I2C/SPI and presents it via USB to a host or via a wireless companion module. Its CIP peripherals (configurable logic cells, signal routing) handle timing-critical glue logic without CPU intervention, freeing the core for higher-value processing. Deployed between a sensor cluster and a Wi-Fi/BLE module, the device's deep-sleep current of a few hundred nA keeps battery-powered IoT nodes alive on small cells versus designs based on continuously active MCUs.
Recommended
Industrial Control Panels and HMI
Industrial control panels leverage the PIC24FJ32GP205-I/M4's USB Device role for firmware updates, configuration upload, and diagnostics. The 32 KB Flash supports small HMI logic and the 12-bit ADC reads panel potentiometers and analog sensors. Core Independent Peripherals (CIPs) handle PWM generation for indicator LEDs and backlight dimming without CPU load. Mounted in a sealed panel with USB service-port access; the device's -40C to +85C industrial range tolerates factory-floor environments where consumer-grade MCUs would fail or drift. The exposed-pad UQFN package provides robust mechanical anchoring in vibration-prone locations.
Recommended
USB Host Embedded Peripherals
USB OTG host capability makes the PIC24FJ32GP205-I/M4 attractive for embedded host applications such as USB mass-storage readers, USB-to-SD bridges, and USB-HID host controllers. The MCU can enumerate devices, run FAT file systems, and stream data to local storage or display peripherals. The 16 MIPS core plus 8 KB RAM handles Mass Storage Class drivers and small file-system operations. Used in portable USB testers and embedded device programmers where the MCU acts as a USB host; the part's full-speed (12 Mbps) bandwidth suffices for HID, MSC, and CDC classes versus high-speed-only alternatives that add cost.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP205-I/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GP205-I/M4 | PIC24FJ128GP205-I/M4 | PIC24FJ128GL405-I/M4 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Program Flash | 32 KB ECC | 64 KB ECC | 128 KB ECC | 128 KB ECC |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB Module | FS Host/Device/OTG | FS Host/Device/OTG | FS Host/Device/OTG | FS Host/Device/OTG |
| Core Independent Peripherals (CIPs) | CLC, Signal Routing, MCCP, SCCP | Same CIP set | Same CIP set | Enhanced GL CIP set |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Integrated Full-Speed USB OTG in 6x6 mm UQFN (vs PIC24FJ32GA104-I/ML (44-QFN, no USB))
- Direct firmware-compatible upgrade to 64 KB Flash variant (vs PIC24FJ32GB002-I/SS (28-SSOP, no USB))
- XLP sleep current in hundreds of nA with RAM retention (vs PIC24FJ32GP203T-I/M5 (M5 package variant))
Design Notes
Estimated: For the 48-UQFN exposed pad (EP), provide a copper pour of at least the EP land area (about 4.5x4.5 mm) on the top layer with 9 thermal vias (0.3 mm pitch) stitching to the inner ground plane. The EP MUST be soldered to ground (VSS) for both thermal dissipation and electrical reference. Skipping EP soldering degrades theta_JA from approximately 30 C/W to over 80 C/W in real measurements, which can cause thermal shutdown under sustained USB activity.
Place 100 nF + 4.7 uF ceramic decoupling capacitors within 3 mm of every VDD/VSS pair on the 48-UQFN package, with short wide traces to reduce parasitic inductance. VUSB and VBUS pins each need a 4.7 uF decoupling cap plus a 100 nF high-frequency bypass. For USB OTG host mode, ensure the VBUS pin can drive at least 8 mA to power attached peripherals; the internal charge pump can source this only if VDD is at least 3.3 V.
Route the USB DP/DM pair as a 90 ohm differential microstrip on the top layer over a continuous ground plane, keeping pair length matching within 150 mil (3.8 mm). Avoid splits in the reference plane under the DP/DM traces. Place the USB connector within 25 mm of the MCU to minimize stub reflections. Add common-mode chokes (e.g. BLM15AG) on DP/DM if EMI compliance is required.
Do not confuse the 'I' suffix (Industrial -40C to +85C) with the 'E' suffix (Extended -40C to +125C); ordering the wrong temperature grade is a frequent procurement mistake. The 'M4' package suffix is for 48-UQFN 6x6 mm; 'M5' denotes a similar but pin-incompatible variant. Verify with the Microchip product page before PCB fabrication. The part number decode is documented in the PIC24FJ family datasheet ordering information section.
Compliance Information
RoHS and lead-free confirmed per Microchip product page. AEC-Q100 not applicable - this is an industrial-grade 'I' part; AEC-Q100 automotive qualification requires PIC24FJ32GP205-E/M4 or PIC24FJ32GP205-H/M4 variants.
