PIC24FJ64GP203-I/M5 - 16-bit 32MHz MCU 64KB Flash 36-UQFN | Microchip
MPN: PIC24FJ64GP203-I/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.71 | $3.71 |
| 10 | $3.34 | $33.40 |
| 100 | $2.99 | $299.00 |
| 500 | $2.71 | $1,355.00 |
| 1,000 | $2.45 | $2,450.00 |
PIC24FJ64GP203-I/M5 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a range of peripherals such as timers, ADC, communication interfaces (UART, SPI, I2C), and general-purpose I/O. The PIC24F family occupies the 16-bit mid-range of Microchip's product hierarchy, sitting between the 8-bit PIC16/PIC18 and the 32-bit PIC32 lines. It uses a modified Harvard architecture with a 16-bit data path and 24-bit instruction word, offering higher code density and faster arithmetic than 8-bit parts while retaining deterministic interrupt behavior.
Key features include up to 21 analog channels via a 10-bit ADC (with 12-bit option on select variants), multiple serial interfaces (UART, SPI, I2C), 4 general-purpose timers, and a Real-Time Clock/Calendar with RTCC. The 36-UQFN package provides 31 user I/O pins and an exposed pad for thermal dissipation, suitable for compact hand-held products.
Typical applications include portable medical devices, low-power wireless sensor nodes, USB HID peripherals, industrial control, and consumer appliances where low sleep current and 16-bit math performance are required. The combination of 64 KB ECC Flash and XLP sleep currents down to a few hundred nA enables years of operation on a single coin cell.
Designers should plan a PCB footprint with a continuous thermal pad under the UQFN and 4-layer routing to escape 36 pins on a 0.4 mm pitch; the exposed pad must be soldered for electrical ground and thermal continuity. When migrating from PIC24FJ64GP202 to GP203, verify peripheral pin assignments because the GP203 has additional analog channels.
Drop-in alternatives for PIC24FJ64GP203-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 PIC24FJ64GP203-I/M5 (same form factor and footprint) — differing in Core Architecture, Package, Low-Power Technology, Operating Temperature, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GP202-I/M5
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GP204-I/M5
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GU203-I/M5
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC24FJ64GP203-I/M5 - I grade variant
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GL303-I/M5
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ32GP203-I/M5
✅ Drop-In✓ In Stock
$1.89 / Unit
View Datasheet →PIC24FJ64GP203-I/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit) |
| Family | PIC24FJ GP2/GP3 |
| CPU Speed (MIPS) | 16 MIPS (32 MHz) |
| Program Memory (Flash) | 64 KB ECC (44,096 - Words) |
| RAM | 8 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 36-pin UQFN (5x5 mm) - M5 designation |
| I/O Pins | 31 |
| ADC | 10-bit up to 13 channels |
| Timers | 5 x 16-bit Timer/Counter |
| Communication Interfaces | 2x UART, 3x SPI, 3x I2C |
| RTCC (Real-Time Clock) | Yes |
| Low-Power Technology | XLP eXtreme Low Power, sleep down to few hundred nA |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24FJ64GP203-I/M5 Pin Configuration
| Pin 1 | RP5/AN5/RB5 — Remappable I/O / Analog input 5 / Port B bit 5 |
| Pin 2 | RP6/AN6/RB6 — Remappable I/O / Analog input 6 / Port B bit 6 |
| Pin 3 | RP7/AN7/RB7 — Remappable I/O / Analog input 7 / Port B bit 7 |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| Pin 6 | RA0 — Port A bit 0 |
| Pin 7 | RA1 — Port A bit 1 |
| Pin 8 | RA2 — Port A bit 2 |
| Pin 9 | RA3 — Port A bit 3 |
| Pin 10 | RA4 — Port A bit 4 |
| Pin 11 | RA5 — Port A bit 5 |
| Pin 12 | RA6 — Port A bit 6 |
| Pin 13 | RA7 — Port A bit 7 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | OSC1/RA8 — Crystal oscillator input / Port A bit 8 |
| Pin 16 | OSC2/RA9 — Crystal oscillator output / Port A bit 9 |
| Pin 17 | RA10 — Port A bit 10 |
| Pin 18 | RA11 — Port A bit 11 |
| Pin 19 | RA12 — Port A bit 12 |
| Pin 20 | RA13 — Port A bit 13 |
| Pin 21 | RA14 — Port A bit 14 |
| Pin 22 | RA15 — Port A bit 15 |
| Pin 23 | VSS — Ground reference |
| Pin 24 | VDD — Positive supply voltage |
| Pin 25 | RB0 — Port B bit 0 |
| Pin 26 | RB1 — Port B bit 1 |
| Pin 27 | RB2 — Port B bit 2 |
| Pin 28 | RB3 — Port B bit 3 |
| Pin 29 | RB4 — Port B bit 4 |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply voltage |
| Pin 32 | RB8 — Port B bit 8 |
| Pin 33 | RB9 — Port B bit 9 |
| Pin 34 | RB10 — Port B bit 10 |
| Pin 35 | RB11 — Port B bit 11 |
| Pin 36 | RB12 — Port B bit 12 |
Typical Applications
PIC24FJ64GP203-I/M5 is suitable for 6 applications: Portable Medical Devices, Wireless Sensor Nodes (IoT), USB HID / Consumer Peripherals, Industrial Control & HMI, Smart Home / Building Automation, Consumer Appliance Control.
Portable Medical Devices
The PIC24FJ64GP203-I/M5's XLP eXtreme Low Power technology achieves sleep currents down to a few hundred nanoamps while retaining 8 KB RAM and RTCC, enabling years of battery life on a single coin cell. Its 64 KB ECC Flash accommodates firmware for glucose meters, pulse oximeters, and portable ECG monitors with safety-critical reliability. The 16 MIPS core performs real-time signal processing for biosensors, while 31 I/O and 10-bit ADC sample physiological signals. Compared to 8-bit PIC MCUs, the 16-bit architecture doubles computational throughput without increasing power.
Recommended
Wireless Sensor Nodes (IoT)
The PIC24FJ64GP203-I/M5 is ideal for battery-powered IoT endpoints where sleep current dominates the energy budget. With XLP sleep under 1 uA and 16 MIPS active performance, the MCU handles protocol stacks for Sub-GHz transceivers like LoRa or proprietary RF while spending 99%+ of its life in deep sleep. The 36-pin UQFN 5x5 mm footprint fits miniature sensor modules. Hardware RTCC enables accurate timestamping without CPU wake events, and 8 KB RAM buffers sensor payloads before transmission bursts.
Recommended
USB HID / Consumer Peripherals
For USB Human Interface Devices, the PIC24FJ64GP203-I/M5 pairs with an external USB transceiver or can be upgraded to PIC24FJ64GU203-I/M5 (drop-in with USB on-chip) for HID-class devices. Its 64 KB Flash stores USB descriptors, HID report tables, and bootloader. The 32 MHz CPU sustains 1 ms HID polling without leaving headroom. UART/SPI/I2C peripherals connect to wireless combos, RGB lighting drivers, or biometric sensors. Designers leverage the same UQFN-36 PCB across product variants to minimize tooling cost.
Recommended
Industrial Control & HMI
The PIC24FJ64GP203-I/M5 operates from -40 C to +85 C with 31 I/O pins, suitable for industrial sensor interfaces, motor control commutation logic, and small HMI panels. Its 5 16-bit timers generate precise PWM for stepper or BLDC commutation; 10-bit ADC reads current/voltage feedback. ECC Flash guards against bit flips in electrically noisy factory environments. RTCC timestamps events for data logging. The wide 2.0-3.6 V supply tolerates industrial 24 V-bus-derived rails after regulation.
Recommended
Smart Home / Building Automation
The PIC24FJ64GP203-I/M5 powers battery-operated smart locks, window sensors, and HVAC thermostats where low standby current and RTCC-based scheduling reduce service intervals. Its 64 KB Flash accommodates wireless stack libraries (Zigbee / Bluetooth LE through companion modules), and 8 KB RAM buffers telemetry during network outages. 2.0-3.6 V operation aligns with 2xAA / coin-cell power. The UQFN-36 footprint enables compact, single-board sensor designs that fit European standard back-box dimensions.
Recommended
Consumer Appliance Control
In white goods, coffee machines, and small kitchen appliances, the PIC24FJ64GP203-I/M5 controls user interfaces, sensor acquisition, and timing sequences. The 16 MIPS core runs control loops for temperature, flow, or pressure regulation. 10-bit ADC reads NTC sensors, while UART/SPI/I2C connect to display drivers and Wi-Fi modules for connected appliances. The XLP technology lets battery-backed displays retain state for years. ECC Flash plus industrial temperature grade ensure reliability in warm, humid appliance environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GP203-I/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GP202-I/M5 | PIC24FJ64GP204-I/M5 | PIC24FJ64GU203-I/M5 | PIC24FJ128GL303-I/M5 | PIC24FJ32GP203-I/M5 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 36-pin UQFN (5x5 mm) | 36-pin UQFN (5x5 mm) - same | 36-pin UQFN (5x5 mm) - same | 36-pin UQFN (5x5 mm) - same | 36-pin UQFN (5x5 mm) - same | 36-pin UQFN (5x5 mm) - same |
| Flash | 64 KB ECC | 64 KB ECC | 64 KB ECC | 64 KB ECC | 128 KB ECC | 32 KB ECC |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB | 8 KB |
| Core 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 |
| USB | No (external transceiver required) | No | No | Yes, USB 2.0 FS OTG on-chip | Yes, USB 2.0 FS OTG on-chip | No |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Temperature Grade | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Family | PIC24FJ GP2/GP3 | PIC24FJ GP2 | PIC24FJ GP2 | PIC24FJ GU2/GP3 (USB) | PIC24FJ GL3 (newer gen) | PIC24FJ GP2 |
Key Differentiators
- Most modern XLP peripheral set in the GP2 family (vs PIC24FJ64GB002)
- Same footprint as USB-capable GU203 for design flexibility (vs PIC24FJ64GU203-I/M5)
- Memory headroom for bootloader and future firmware growth (vs PIC24FJ32GP203-I/M5)
Design Notes
The 36-pin UQFN package uses a 0.4 mm pitch and requires a continuous ground plane beneath the exposed thermal pad (EP). According to Microchip UQFN-36 PCB guidelines, multiple vias (typically 9 in a 3x3 array) must stitch the EP to the inner ground plane for electrical continuity and 4-layer thermal dissipation. Do not route signals beneath the EP. Use NSMD (Non-Solder Mask Defined) pads with solder mask expansion of 0.05 mm to improve solder joint reliability.
Place a 1 uF X7R 0603 ceramic bypass capacitor within 2 mm of each VDD pin (3 VDD pins on UQFN-36), plus a single 10 uF bulk capacitor on the main supply rail. Estimated: at 32 MHz active and 3.3 V VDD, peak core current is approximately 15 mA per VDD domain, so the 1 uF cap provides ~67 nC of charge reserve within a switching event. Place a 100 nF cap on the VCAP pin (internal voltage regulator) if present - omitting it prevents the MCU from starting.
Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm pull-up for normal operation, or to a supervisor for reset control. Configure unused I/O as outputs and tied low (not inputs floating) to minimize shoot-through current in sleep mode. When using the internal FRC oscillator, calibration must be loaded from Flash configuration words at startup to meet the +/- 2% accuracy specification; failing to do so results in UART baud rate errors.
When routing the 32 MHz external crystal (if used) on PCB, keep traces under 5 mm and surround them with a ground guard ring. Place the load capacitors (typically 15-33 pF) within 2 mm of the OSC1/OSC2 pins. For switching-noise immunity on analog channels, dedicate an AVdd pin pair and filter it through a ferrite bead + 10 uF + 100 nF Pi network; shared noisy VDD will couple into ADC readings by 1-2 LSB.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; for automotive applications use AEC-Q100-qualified dsPIC33 or PIC32 variants. ECC Flash supports IEC 60730 Class B safety requirements.
