PIC24FJ32GP203T-I/M5 - 16-bit 32MHz 32KB Flash MCU | Microchip
MPN: PIC24FJ32GP203T-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.84 | $2.84 |
| 10 | $2.55 | $25.50 |
| 100 | $2.16 | $216.00 |
| 500 | $1.84 | $920.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC24FJ32GP203T-I/M5 Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash/ROM), data memory (RAM), and a configurable set of peripherals (UART, SPI, I2C, ADC, timers, PWM, GPIO) on a single die. The PIC24FJ family sits in Microchip's 16-bit microcontroller hierarchy between 8-bit PIC16/PIC18 devices and 32-bit PIC32 parts, in the broader category of embedded microcontrollers -> microprocessors -> semiconductors. The 16-bit modified Harvard architecture delivers 16 MIPS at 32MHz while retaining the deterministic interrupt and peripheral model Microchip is known for.
Key features of the PIC24FJ32GP203T-I/M5 include eXtreme Low Power (XLP) technology for sub-uA sleep currents suitable for battery-powered products, an integrated charge time measurement unit (CTMU) for capacitive touch sensing, a peripheral pin select (PPS) system that routes digital peripherals to most GPIO pins, and a separate RTCC with its own 32 kHz domain. The 14 ADC channels support both 10-bit and 12-bit conversion modes, with on-chip voltage reference options.
The device is built on a low-power CMOS process and supports 2.0V to 3.6V single-supply operation. The internal oscillator and the PLL reduce external component count, while the integrated POR/BOR/LVD circuitry improves robustness in industrial environments. JTAG and ICSP programming/debug interfaces are provided through dedicated pins, allowing in-circuit debug with the MPLAB X IDE and the MPLAB ICD/PICKit tools.
Typical applications include low-power IoT sensor nodes, capacitive touch user interfaces, industrial sensor conditioning nodes, portable medical accessories, and consumer devices with USB-free communication stacks. The 32KB Flash is comfortable for small RTOS, USB stacks, or graphics routines.
When designing with this part, choose the correct package code: /M5 corresponds to the 36-pin UQFN (5x5 mm) and is the smallest package in the family. Pin-remapping is handled by PPS, so verify your pin map against the device datasheet before finalizing the schematic.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, with compliance, lifecycle, and inventory signals aggregated from multiple authorized distributors.
Drop-in alternatives for PIC24FJ32GP203T-I/M5 — 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 PIC24FJ32GP203T-I/M5 (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, Communication Interfaces, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GP203-I/M5
✅ Drop-In✓ In Stock
$1.89 / Unit
View Datasheet →PIC24FJ32GP203T-E/M5
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GP203T-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32GP202T-I/M5
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GP202T-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC24FJ32GP203T-I/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit modified Harvard |
| CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (11K x 24 instructions) |
| Data Memory (SRAM) | 8 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| ADC | 14-channel, 10-bit or 12-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| DMA Channels | 2 |
| Timers | Multiple 16-bit (5x Timer, 1x 32-bit) |
| I/O Pins | Up to 21 |
| Package | 36-UQFN (5x5 mm) - M5 suffix |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial, /I suffix) |
| Special Features | XLP eXtreme Low Power, CTMU, PPS, RTCC, ECC Flash |
| Programming/Debug | ICSP, JTAG |
| RoHS Status | Compliant |
PIC24FJ32GP203T-I/M5 Pin Configuration
| Pin 1 | RP5 — Remappable GPIO / peripheral pin (PPS) |
| Pin 2 | RP6 — Remappable GPIO / peripheral pin (PPS) |
| Pin 3 | RP7 — Remappable GPIO / peripheral pin (PPS) |
| Pin 4 | RP8 — Remappable GPIO / peripheral pin (PPS) |
| Pin 5 | VDD — Supply voltage 2.0V-3.6V |
| Pin 6 | VSS — Ground |
| Pin 7 | OSCI — Crystal oscillator input or external clock |
| Pin 8 | OSCO — Crystal oscillator output |
| Pin 9 | PGED1 — ICSP programming/debug data (shared with RP) |
| Pin 10 | PGEC1 — ICSP programming/debug clock (shared with RP) |
| Pin 11 | RP9 — Remappable GPIO / peripheral pin (PPS) |
| Pin 12 | RP10 — Remappable GPIO / peripheral pin (PPS) |
| Pin 13 | RP11 — Remappable GPIO / peripheral pin (PPS) |
| Pin 14 | RP12 — Remappable GPIO / peripheral pin (PPS) |
| Pin 15 | RP13 — Remappable GPIO / peripheral pin (PPS) |
| Pin 16 | RP14 — Remappable GPIO / peripheral pin (PPS) |
| Pin 17 | VSS — Ground |
| Pin 18 | VDD — Supply voltage 2.0V-3.6V |
| Pin 19 | AN0/RP0 — Analog input 0 / remappable GPIO (PPS) |
| Pin 20 | AN1/RP1 — Analog input 1 / remappable GPIO (PPS) |
| Pin 21 | AN2/RP2 — Analog input 2 / remappable GPIO (PPS) |
| Pin 22 | AN3/RP3 — Analog input 3 / remappable GPIO (PPS) |
| Pin 23 | AN4/RP4 — Analog input 4 / remappable GPIO (PPS) |
| Pin 24 | AVDD — Analog supply voltage |
| Pin 25 | AVSS — Analog ground |
| Pin 26 | AN5 — Analog input 5 (dedicated) |
| Pin 27 | AN6 — Analog input 6 (dedicated) |
| Pin 28 | AN7 — Analog input 7 (dedicated) |
| Pin 29 | AN8 — Analog input 8 (dedicated) |
| Pin 30 | AN9 — Analog input 9 (dedicated) |
| Pin 31 | VDDCORE — Internal core voltage decoupling |
| Pin 32 | VSS — Ground |
| Pin 33 | TMS — JTAG test mode select |
| Pin 34 | TCK — JTAG test clock |
| Pin 35 | TDI — JTAG test data in |
| Pin 36 | TDO — JTAG test data out |
Typical Applications
PIC24FJ32GP203T-I/M5 is suitable for 6 applications: Low-Power IoT Sensor Node, Capacitive Touch User Interface, Industrial Sensor Conditioning Node, Portable Medical Accessory, Consumer Appliance Control Board, Battery Management Front Panel.
Low-Power IoT Sensor Node
The PIC24FJ32GP203T-I/M5 is well-suited to battery-powered IoT sensor nodes thanks to its XLP eXtreme Low Power technology that delivers sub-microampere sleep currents and its integrated 14-channel 10/12-bit ADC. With 32 KB ECC Flash and 8 KB SRAM, the device can host lightweight RF stacks, custom sensor-fusion routines, or simple protocol bridges over UART/SPI/I2C. The on-chip RTCC with dedicated 32 kHz domain keeps wall-clock time without waking the core, while PPS lets designers route any digital peripheral to any GPIO to minimize PCB area. Typical nodes run years on a single CR2032 cell using the XLP sleep modes.
Recommended
Capacitive Touch User Interface
The on-chip CTMU (Charge Time Measurement Unit) makes the PIC24FJ32GP203T-I/M5 ideal for capacitive touch buttons, sliders, and proximity sensors in consumer appliances and industrial HMIs. CTMU provides precise time-domain charge measurement for self-capacitance and mutual-capacitance sensing, eliminating external touch ASICs. Combined with the 14 ADC channels and XLP low-power wake-on-touch, the MCU can stay in sleep until a finger touches the panel - dramatically reducing standby power. PPS also lets the designer assign I2C/SPI to drive an LED driver or audio DAC from the same chip.
Recommended
Industrial Sensor Conditioning Node
For industrial 4-20 mA loop-powered sensor transmitters and field instruments, the PIC24FJ32GP203T-I/M5 offers 2.0-3.6V operation, an industrial -40C to +85C temperature range, and integrated 12-bit ADC with internal reference. Its deterministic 16-bit core plus 5x 16-bit timers is well suited to PID control loops, RTD/thermocouple linearization, and Modbus RTU framing over UART. The on-chip CTMU and PPS give designers flexibility to repurpose pins for additional analog front ends without changing PCB artwork, accelerating platform reuse across product variants.
Recommended
Portable Medical Accessory
Portable medical accessories such as pulse oximeter probes, glucose meter dongles, and pill-bottle reminders benefit from the PIC24FJ32GP203T-I/M5's XLP low-power modes, on-chip 12-bit ADC, and small 5x5 mm UQFN footprint. The 32 KB ECC Flash supports wireless-protocol stacks (BLE through SPI-attached module) and IEC 62304 firmware life-cycle requirements, while the hardware CRC and ECC protect against single-bit errors in battery-critical environments. Two UART, two SPI, and two I2C peripherals provide ample connectivity for displays, sensors, and wireless transceivers.
Recommended
Consumer Appliance Control Board
In washing machines, coffee makers, air purifiers, and small kitchen appliances, the PIC24FJ32GP203T-I/M5 provides a cost-effective 16-bit core with plenty of PWM channels (via 16-bit timers) for motor and valve control, an integrated ADC for temperature and humidity sensing, and ample Flash for user-interface state machines. The peripheral pin select (PPS) capability means the same firmware binary can be deployed across PCB revisions that swap pin assignments for layout reasons, reducing BOM and tooling cost. PPS also helps meet EMI targets by relocating sensitive analog routing on the fly.
Recommended
Battery Management Front Panel
The PIC24FJ32GP203T-I/M5 can act as the front-panel controller for portable battery packs and UPS systems: it reads cell voltage through the 14-channel ADC, drives an LED bar via PWM, talks to a smart battery gauge over I2C, and presents a UART/SPI interface to a host SoC. Its 2.0-3.6V VDD range aligns directly with single-cell Li-Ion operation, while XLP sleep draws sub-uA so the panel itself does not drain the pack. ECC Flash guards against bit flips during transient events, and the on-chip CTMU can be re-purposed for touch-button control of the panel UI.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP203T-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GP203-I/M5 | PIC24FJ32GP203T-E/M5 | PIC24FJ32GP203T-I/ML | PIC24FJ32GP202T-I/M5 | PIC24FJ32GP202T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-UQFN (5x5) - M5 | 36-UQFN (5x5) - same | 36-UQFN (5x5) - same | 28-QFN (6x6) | 36-UQFN (5x5) - same | 28-SOIC |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Data Memory (SRAM) | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB | 4 KB |
| 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| ADC Channels | 14 channels, 10/12-bit | 14 channels, 10/12-bit | 14 channels, 10/12-bit | 10 channels, 10/12-bit | 12 channels, 10/12-bit | 12 channels, 10/12-bit |
| UART / SPI / I2C | 2 / 2 / 2 | 2 / 2 / 2 | 2 / 2 / 2 | 2 / 2 / 2 | 1 / 2 / 1 | 1 / 2 / 1 |
| XLP Low-Power Sleep | Yes (sub-uA) | Yes (sub-uA) | Yes (sub-uA) | Yes (sub-uA) | Yes (sub-uA) | Yes (sub-uA) |
| Packaging Form | Tape & Reel (-T suffix) | Tube / Tray | Tape & Reel, Extended temp | Tape & Reel, 28-QFN | Tape & Reel | Tape & Reel |
Key Differentiators
- Smallest 36-pin UQFN footprint in the GP203 family with XLP low power (vs PIC24FJ32GP203T-I/ML (28-QFN))
- 32 KB ECC Flash with hardware error correction (vs PIC24FJ32GP202T-I/M5)
- Industrial -40C to +85C operating range as the /I suffix default (vs PIC24FJ32GP203T-E/M5 (Extended -40C to +125C))
- Tape & reel packaging for high-volume SMT assembly (vs PIC24FJ32GP203-I/M5 (tube tray))
Design Notes
The PIC24FJ32GP203T-I/M5 operates from 2.0V to 3.6V; use a low-quiescent LDO such as the MCP1700 or a buck regulator like the MCP16331 to maximize XLP sleep benefits. Decouple VDD and VDDCORE with 100 nF X7R ceramic capacitors placed within 3 mm of each pin, plus a bulk 4.7 uF tantalum or ceramic on VDD. Tie unused VDD pins to supply and unused VSS pins to ground to avoid floating ESD structures. Estimated: at 32 MHz active, core current is roughly 8 mA; in XLP sleep the part draws under 1 uA at 3.3V.
The 36-UQFN (5x5 mm) package requires a thermal pad that MUST be soldered to a ground copper pour of at least 1 square inch for thermal dissipation and electrical performance. Per Microchip's UQFN PCB layout guidelines, use an array of vias (0.3 mm drill, 0.6 mm pitch) under the thermal pad to connect to an internal ground plane. Avoid routing signal traces beneath the thermal pad to prevent short-circuit risk during reflow and to minimize thermal mass.
Do not forget to configure PPS (peripheral pin select) before using any digital peripheral pin. The PIC24FJ32GP203 defaults most remappable pins to GPIO at reset; UART, SPI, and I2C signals will not appear on pins until the PPS registers are unlocked (OSCCON.IOLOCK) and assigned. Use MPLAB X Code Configurator or the MCC plugin to generate the correct pin map automatically. Failing to unlock PPS is one of the most common reasons a 'dead' prototype appears to have no UART output.
The 14-channel ADC on the PIC24FJ32GP203T-I/M5 supports 10-bit and 12-bit modes; for noise-sensitive measurements use 12-bit mode with the internal bandgap reference and add a 100 nF + 10 uF decoupling on AVDD/AVSS. Avoid switching digital signals near analog traces, and route analog inputs away from PWM outputs. Estimated: enabling ADC auto-scan at 500 ksps with 3.3V VDD yields roughly 1 LSB of noise with proper grounding and a clean reference.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard /I industrial grade (-40C to +85C) is not AEC-Q100 qualified; choose PIC24FJ32GP203T-E/M5 with /E extended temp grade for harsher environments but still not automotive-qualified.
