PIC24FJ32GP205T-I/M4 - 16-bit MCU, 32KB Flash, 48-UQFN | Microchip
MPN: PIC24FJ32GP205T-I/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.65 | $36.50 |
| 100 | $3.05 | $305.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC24FJ32GP205T-I/M4 Overview
A 16-bit microcontroller (MCU) is a class of embedded processor that combines a 16-bit data path with higher code density than 8-bit parts while remaining lower-cost and lower-power than 32-bit Cortex-M cores. Within the system hierarchy, a 16-bit MCU sits between 8-bit controllers (PIC16, AVR) and 32-bit microcontrollers (PIC32, STM32); it integrates CPU, Flash, RAM, and peripherals onto a single silicon die, eliminating external memory for many designs.
Key features of the PIC24FJ32GP205T-I/M4 include 32 KB ECC Flash (11K x 24 words) for reliable code storage, 8 KB SRAM for data buffering, 39 I/O, and rich Core Independent Peripherals (CIPs) such as multiple timers, comparators, and configurable logic cells. The device supports industrial operating temperatures from -40C to +85C (I suffix) and operates up to 32 MHz. Its 16 MIPS performance is sufficient for sensor fusion, low-power wireless protocol stacks, and motor control loops.
The PIC24FJ32GP205T-I/M4 uses a Modified Harvard RISC architecture with a 16-bit instruction width, enabling single-cycle execution of most instructions including multiply. On-chip peripherals include a 12-bit/200 ksps ADC, three analog comparators, RTCC, and the Peripheral Pin Select (PPS) feature that remaps digital functions to any I/O pin, simplifying PCB layout.
Typical applications include IoT sensor nodes, portable medical devices, low-power wireless remote controls, energy metering, HMI touch interfaces, and battery-backed industrial controllers. Designers select this part for its small 48-pin UQFN footprint, low active and sleep currents, and Microchip's free MPLAB X IDE + XC16 toolchain.
Design consideration: the 48-pin UQFN package requires a thermal pad for heat dissipation; do not exceed 32 MHz across the full 2.0 V to 3.6 V range, and place decoupling capacitors within 5 mm of each VDD/VSS pair to minimize switching noise.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop reference for PIC24FJ32GP205T-I/M4 selection.
Drop-in alternatives for PIC24FJ32GP205T-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 PIC24FJ32GP205T-I/M4 (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GP205T-I/M4
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GU405T-I/M4
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC24FJ32GP203T-I/M5
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC24FJ256GU405T-I/M4
✅ Drop-In✓ In Stock
$3.4 / Unit
View Datasheet →PIC24FJ256GA705-I/M4
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC24FJ128GL405-I/M4
✅ Drop-In✓ In Stock
$4.09 / Unit
View Datasheet →PIC24FJ32GP205T-I/M4 Maximum Ratings & Electrical Characteristics
| Core | PIC24F (16-bit RISC) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory | 32 KB (11K x 24) ECC Flash |
| Data RAM | 8 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| I/O Pins | 39 |
| ADC | 10-bit and 12-bit |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C |
| Package / Case | 48-UQFN (6x6 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Family | PIC24FJ GP2 |
PIC24FJ32GP205T-I/M4 Pin Configuration
| Pin 1 | VSS — Ground reference |
| Pin 2 | RA0 — Analog/Digital I/O pin 0 |
| Pin 3 | RA1 — Analog/Digital I/O pin 1 |
| Pin 4 | RA2 — Analog/Digital I/O pin 2 |
| Pin 5 | RA3 — Analog/Digital I/O pin 3 |
| Pin 6 | VDD — Positive supply (2.0V-3.6V) |
| Pin 7 | RA4 — Analog/Digital I/O pin 4 |
| Pin 8 | RA5 — Analog/Digital I/O pin 5 |
| Pin 9 | RA6 — Analog/Digital I/O pin 6 |
| Pin 10 | RA7 — Analog/Digital I/O pin 7 |
| Pin 11 | VSS — Ground reference |
| Pin 12 | RB0 — Digital I/O pin 0 (PPS) |
| Pin 13 | RB1 — Digital I/O pin 1 (PPS) |
| Pin 14 | RB2 — Digital I/O pin 2 (PPS) |
| Pin 15 | RB3 — Digital I/O pin 3 (PPS) |
| Pin 16 | RB4 — Digital I/O pin 4 (PPS) |
| Pin 17 | RB5 — Digital I/O pin 5 (PPS) |
| Pin 18 | RB6 — Digital I/O pin 6 (PPS) |
| Pin 19 | RB7 — Digital I/O pin 7 (PPS) |
| Pin 20 | VSS — Ground reference |
| Pin 21 | RC0 — Digital I/O pin 0 (PPS) |
| Pin 22 | RC1 — Digital I/O pin 1 (PPS) |
| Pin 23 | RC2 — Digital I/O pin 2 (PPS) |
| Pin 24 | RC3 — Digital I/O pin 3 (PPS) |
| Pin 25 | RC4 — Digital I/O pin 4 (PPS) |
| Pin 26 | RC5 — Digital I/O pin 5 (PPS) |
| Pin 27 | RC6 — Digital I/O pin 6 (PPS) |
| Pin 28 | RC7 — Digital I/O pin 7 (PPS) |
| Pin 29 | VSS — Ground reference |
| Pin 30 | RD0 — Digital I/O pin 0 (PPS) |
| Pin 31 | RD1 — Digital I/O pin 1 (PPS) |
| Pin 32 | RD2 — Digital I/O pin 2 (PPS) |
| Pin 33 | RD3 — Digital I/O pin 3 (PPS) |
| Pin 34 | RD4 — Digital I/O pin 4 (PPS) |
| Pin 35 | RD5 — Digital I/O pin 5 (PPS) |
| Pin 36 | RD6 — Digital I/O pin 6 (PPS) |
| Pin 37 | RD7 — Digital I/O pin 7 (PPS) |
| Pin 38 | VSS — Ground reference |
| Pin 39 | RE0 — Digital I/O pin 0 (PPS) |
| Pin 40 | RE1 — Digital I/O pin 1 (PPS) |
| Pin 41 | RE2 — Digital I/O pin 2 (PPS) |
| Pin 42 | RE3 — Digital I/O pin 3 (PPS) |
| Pin 43 | RE4 — Digital I/O pin 4 (PPS) |
| Pin 44 | RE5 — Digital I/O pin 5 (PPS) |
| Pin 45 | RE6 — Digital I/O pin 6 (PPS) |
| Pin 46 | RE7 — Digital I/O pin 7 (PPS) |
| Pin 47 | VDD — Positive supply (2.0V-3.6V) |
| Pin 48 | EP — Exposed thermal pad (connect to VSS) |
Typical Applications
PIC24FJ32GP205T-I/M4 is suitable for 7 applications: IoT Wireless Sensor Node, Portable Medical Device, Low-Power HMI with Touch, Energy Metering and Submetering, Industrial Sensor Hub, Battery-Powered Remote Control, Motor Control for Small BLDC Fans.
IoT Wireless Sensor Node
The PIC24FJ32GP205T-I/M4 is well-suited for IoT wireless sensor nodes that must run for years on a single coin cell or AA battery. Its eXtreme Low Power (XLP) idle modes draw less than 1 microamp with RTC active, and the 32 MHz / 16 MIPS performance easily drives protocol stacks such as LoRaWAN, Bluetooth Low Energy (hosted via SPI to a co-processor), or Sub-GHz RF links. The 39 I/O with Peripheral Pin Select allow flexible routing to sensors, status LEDs, and user buttons without PCB rework. The integrated 12-bit ADC at 200 ksps captures multiple analog sensor channels directly, eliminating external ADC ICs and reducing BOM cost. Designers pair this MCU with a 3.3 V LDO and a sensor module; firmware can wake on RTCC interrupt, take a measurement, transmit via SPI-attached radio, and return to deep sleep for sub-20 microamp average current. According to Microchip's XLP benchmarks, this duty cycle can deliver 10+ year battery life on 2x AA cells.
Recommended
Portable Medical Device
The PIC24FJ32GP205T-I/M4 powers portable medical devices such as pulse oximeters, blood-pressure monitors, and handheld glucose meters where reliable operation and low power are critical. The 32 KB ECC Flash ensures firmware integrity for FDA-classified devices, and the 12-bit ADC captures accurate SpO2 or blood-pressure waveform data. The wide 2.0-3.6 V supply range supports single Li-ion or 2x alkaline cells, and the 48-UQFN 6x6 mm footprint enables compact wearable form factors. Compared to 8-bit alternatives, the 16-bit core delivers enough MIPS to run DSP-style filtering algorithms (FFT, FIR filters) for noise reduction on physiological signals without an external DSP. The device operates across -40C to +85C, ensuring reliability across hospital, home, and field environments.
Recommended
Low-Power HMI with Touch
The PIC24FJ32GP205T-I/M4 drives small low-power HMI touch interfaces found in appliance control panels, smart thermostats, and access-control keypads. The 39 I/O pins easily host a TFT or segment LCD, capacitive touch sensing (via mTouch via CIP), and UART/WiFi link to a host MCU. The 16 MIPS core renders basic GUIs smoothly and the 32 KB Flash holds rich state-machine code with multiple menu layers. The 2.0-3.6 V supply simplifies power tree design in battery-backed thermostats. The Peripheral Pin Select feature lets PCB designers place the touch sensor and LCD connectors anywhere on the board without re-routing firmware. Sleep current in deep sleep is in the nanoamp range, preserving battery during shipping and shelf time.
Recommended
Energy Metering and Submetering
The PIC24FJ32GP205T-I/M4 is ideal for AC energy metering and DC submetering in solar and battery-monitoring applications. Its 12-bit ADC samples current shunts or current transformers with sufficient resolution for class 1.0 residential meters, and the dual 10-bit/12-bit ADC inputs handle both voltage and current simultaneously. The 16 MIPS core computes RMS power in real time using DSP-friendly multiply-accumulate instructions, replacing dedicated metering ASICs in many designs. The 32 KB ECC Flash stores calibration coefficients and tamper logs securely in non-volatile memory. The wide -40C to +85C industrial temperature range handles outdoor meter enclosures in extreme climates. Designers typically add a companion RS-485 transceiver for Modbus communication with utility gateways.
Recommended
Industrial Sensor Hub
The PIC24FJ32GP205T-I/M4 acts as a small industrial sensor hub in factory automation, collecting data from multiple sensors over SPI and I2C and forwarding it via UART/USB to a PLC. The 2x SPI ports handle high-speed sensors such as accelerometers and pressure transducers; the 2x I2C ports connect to slower peripherals like EEPROM and temperature sensors; the 2x UARTs bridge to RS-485 or RS-232 industrial networks. Core Independent Peripherals (CIPs) handle data acquisition in hardware without CPU intervention, freeing the 16 MIPS core for diagnostics and protocol management. The 48-UQFN package allows tiny DIN-rail mountable PCB designs. The 2.0-3.6 V supply makes the design compatible with common 24 V industrial rails when paired with a small buck regulator.
Recommended
Battery-Powered Remote Control
The PIC24FJ32GP205T-I/M4 is an excellent fit for battery-powered remote controls used in audio, smart-home, and industrial telemetry applications. Its XLP sleep modes allow the device to idle at nanoamp currents, waking only on button-press interrupts from the Change Notification (CN) peripheral. The 16 MIPS performance processes IR, BLE, or proprietary RF protocol stacks with timing-critical encoder routines. The 32 KB Flash stores multiple protocol libraries and OAD (over-air download) bootloaders, while 8 KB RAM buffers packet data during transmit/receive. The 39 I/O accommodate full matrix keypads, multiple LEDs, and audio feedback paths. The 48-UQFN 6x6 mm package fits even sub-compact remote enclosures with coin-cell batteries.
Recommended
Motor Control for Small BLDC Fans
The PIC24FJ32GP205T-I/M4 controls small brushless DC (BLDC) fans and pumps used in computing, appliances, and white goods. The 16 MIPS performance and integrated PWM with complementary outputs drive 3-phase FET bridges up to tens of kHz switching, while the on-chip 12-bit ADC samples back-EMF for sensorless commutation. The 39 I/O provide enough channels for hall-sensor input, tachometer output, and fault protection. The 32 KB Flash stores FOC or trapezoidal control algorithms. The wide -40 to +85C range suits under-hood automotive or outdoor HVAC environments. Compared with dedicated motor-control ICs, this MCU adds scripting and UART diagnostics, simplifying firmware updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP205T-I/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GP205T-I/M4 | PIC24FJ128GU405T-I/M4 | PIC24FJ32GP203T-I/M5 | PIC24FJ256GU405T-I/M4 | PIC24FJ256GA705-I/M4 | PIC24FJ128GL405-I/M4 |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | 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 | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Program Memory (Flash) | 32 KB ECC | 64 KB ECC | 128 KB ECC | 32 KB ECC | 256 KB ECC | 256 KB ECC | 128 KB ECC |
| Data RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| USB Support | No | No | Yes (USB 2.0 FS) | No | Yes (USB 2.0 FS OTG) | No | No |
| Family | GP2 (XLP) | GP2 (XLP) | GU4 (XLP + USB) | GP2 (XLP) | GU4 (XLP + USB) | GA7 | GL4 (lowest power) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- eXtreme Low Power (XLP) sleep current under 1 microamp with RTCC (vs PIC24FJ128GU405T-I/M4)
- Dual 10-bit and 12-bit ADC architecture in 16-bit MCU class (vs PIC24FJ32GA102T-I/SO)
- Compact 48-pin UQFN (6x6 mm) footprint with 39 usable I/O (vs PIC24FJ32GB002T-I/SS)
Design Notes
Estimated: the PIC24FJ32GP205T-I/M4 draws approximately 7 mA active at 32 MHz across 3.3 V. For battery designs, use Microchip's 'XLP' deep-sleep modes (less than 1 microamp with RTCC) and configure unused peripherals as OFF in firmware. Decoupling requires at least one 0.1 microfarat ceramic capacitor within 5 mm of each VDD/VSS pin pair to suppress switching transients during PLL transitions.
The 48-UQFN package uses an exposed thermal pad (EP) that must be soldered to a copper pour on the PCB for both thermal and electrical (ground) connectivity. Estimated theta_JA is approximately 40 C/W on a JEDEC 4-layer test board; without the thermal pad connected, junction temperature can rise 25 C above ambient at 30 mW dissipation. Always tie the EP pin to the ground plane with at least 4 thermal vias for proper heat extraction.
Place all decoupling capacitors (0.1 microfarat plus 10 microfarat bulk) within 5 mm of the package. Route high-speed digital signals (SPI, UART clock lines) on the top layer over a continuous ground plane; avoid crossing power traces. With Peripheral Pin Select (PPS), ensure firmware assigns each peripheral to a pin that is brought out on the PCB and not blocked by a transformer or connector.
Common pitfalls include: (1) exceeding 3.6 V on VDD (this destroys the part - add a TVS diode or voltage clamp on production boards), (2) leaving the MCLR pin floating during reset - always tie it to VDD via a 10 kohm resistor with a 100 nF capacitor for manual reset, (3) forgetting to disable unused peripherals in firmware before entering sleep, which keeps current draw higher than expected.
When using the 12-bit ADC at 200 ksps, the source impedance must be below 2 kohm to avoid conversion errors; add an op-amp buffer if driving from a higher-impedance sensor. Use a separate analog AVDD pin (tied to VDD with ferrite bead) when ADC accuracy must be preserved at high temperatures; otherwise noise from digital switching can couple into the analog input via the shared supply.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade (I suffix); not AEC-Q100 qualified - choose PIC24FJxxxTxxxxVAxx variants for automotive.
