PIC24FJ32GP203-E/M5 - 16-bit XLP MCU, 32KB Flash | Microchip
MPN: PIC24FJ32GP203-E/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.66 | $266.00 |
| 500 | $2.28 | $1,140.00 |
| 1,000 | $1.91 | $1,910.00 |
PIC24FJ32GP203-E/M5 Overview
A PIC24FJ microcontroller is a 16-bit modified-Harvard RISC MCU built around Microchip's PIC24 architecture, which sits in the broader hierarchy of microcontrollers -> MCUs -> RISC processors -> semiconductor ICs. The PIC24FJ family is specifically engineered for low-power, mixed-signal embedded applications where deterministic real-time response, peripheral integration, and extended battery life are required. The 'FJ' suffix denotes Flash program memory with the XLP nanoWatt technology for deep sleep currents down to hundreds of nA while retaining RAM and core state.
Key features include 32KB (11K x 24 instructions) ECC Flash with self-programming, 8KB SRAM, a hardware multiply/divide engine, 27 I/O pins, three 16-bit timers, four DMA channels, up to four UART, three SPI, three I2C, and a 10-bit 1.1 Msps ADC with up to 13 channels. CIP blocks include configurable logic cells (CLC), multi-vector interrupt controller, and a real-time clock calendar (RTCC) with calibration. The 36-pin UQFN package (5x5 mm with exposed pad) enables compact PCB layouts for space-constrained products.
From an architecture standpoint, the PIC24FJ32GP203 uses a 16-bit modified-Harvard bus with separate program and data paths, a 24-bit instruction word, and hardware DSP-like multiply/divide. The ECC Flash corrects single-bit errors and detects multi-bit errors, increasing reliability in harsh environments. The XLP technology combined with the PMD (Peripheral Module Disable) registers allows unused peripherals to be turned off to drop active power below 1 mA/MIPS.
Typical applications include low-power IoT sensor nodes, battery-powered medical wearables, USB human-interface devices, industrial data loggers, and consumer appliances requiring extended battery life. The 32KB Flash and 8KB RAM are well matched to mid-sized state machines and communication stacks (ZigBee, LoRa, BLE via external radio).
Design consideration: route the exposed thermal pad of the UQFN-36 to a continuous ground pour and place decoupling capacitors (100 nF plus 10 uF bulk) within 2 mm of the VDD/VSS pins. The internal voltage regulator requires the ENVREG pin to be tied correctly for the 2V-3.6V supply range.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ32GP203-E/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 PIC24FJ32GP203-E/M5 (same form factor and footprint) — differing in Core Architecture, CPU Speed, Package, ADC, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GP203-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.89 / Unit
View Datasheet →PIC24FJ32GP203T-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32GP203-E/M5VAO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ64GP203-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32GP205-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ128GL303-I/M5
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ32GP203-E/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC, modified Harvard |
| Program Memory | 32 KB Flash with ECC (11K x 24 instructions) |
| Data Memory (SRAM) | 8 KB |
| CPU Speed | 32 MHz / 16 MIPS |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40 C to +125 C (E-temp) |
| Package | 36-pin UQFN (5x5 mm) with exposed pad |
| I/O Pins | 27 |
| ADC | 10-bit, up to 13 channels, 1.1 Msps |
| Comparators | 3 (configurable) |
| Timers | 5 x 16-bit, 1 x 32-bit |
| UART | 4 |
| SPI | 3 |
| I2C | 3 |
| DMA Channels | 4 |
| Core Independent Peripherals | CLC, MCC, RTCC, PWM, ICD |
| XLP Sleep Current | Hundreds of nA with RAM retention |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ32GP203-E/M5 Pin Configuration
| Pin 1 | RP5/RB5 — Remappable I/O, I2C2 SDA |
| Pin 2 | RP6/RB6 — Remappable I/O, I2C2 SCL |
| Pin 3 | RP7/RB7 — Remappable I/O |
| Pin 4 | RP8/RB8 — Remappable I/O |
| Pin 5 | RP9/RB9 — Remappable I/O |
| Pin 6 | VSS — Ground |
| Pin 7 | VDD — Positive supply voltage 2.0-3.6V |
| Pin 8 | RA0 — Port A I/O / analog input |
| Pin 9 | RA1 — Port A I/O / analog input |
| Pin 10 | RA2 — Port A I/O / analog input |
| Pin 11 | RA3 — Port A I/O / analog input |
| Pin 12 | RA4 — Port A I/O / analog input |
| Pin 13 | AVSS — Analog ground |
| Pin 14 | AVDD — Analog positive supply |
| Pin 15 | RA5 — Port A I/O / analog input |
| Pin 16 | RA6 — Port A I/O / oscillator |
| Pin 17 | RA7 — Port A I/O / oscillator |
| Pin 18 | VSS — Ground |
| Pin 19 | OSCI — Primary oscillator input |
| Pin 20 | OSCO — Primary oscillator output |
| Pin 21 | RP10/RB10 — Remappable I/O |
| Pin 22 | RP11/RB11 — Remappable I/O |
| Pin 23 | RP12/RB12 — Remappable I/O |
| Pin 24 | RP13/RB13 — Remappable I/O |
| Pin 25 | RP14/RB14 — Remappable I/O |
| Pin 26 | RP15/RB15 — Remappable I/O |
| Pin 27 | VSS — Ground |
| Pin 28 | VDD — Positive supply voltage 2.0-3.6V |
| Pin 29 | RC0 — Port C I/O |
| Pin 30 | RC1 — Port C I/O |
| Pin 31 | RC2 — Port C I/O |
| Pin 32 | RC3 — Port C I/O |
| Pin 33 | RC4 — Port C I/O |
| Pin 34 | RC5 — Port C I/O |
| Pin 35 | RC6 — Port C I/O |
| Pin 36 | RC7 — Port C I/O |
Typical Applications
PIC24FJ32GP203-E/M5 is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Industrial Data Loggers, Medical Wearables and Health Monitors, USB Human Interface Devices (HID), Consumer Appliance Control Boards, Automotive Sensor Modules.
Battery-Powered IoT Sensor Nodes
The PIC24FJ32GP203-E/M5's XLP nanoWatt technology delivers sleep currents in the hundreds of nA range while retaining 8KB of SRAM and the RTCC, making it ideal for IoT sensor nodes that spend most of their life in deep sleep and wake periodically to transmit. With 32KB ECC Flash and 8KB RAM, it can host wireless stacks such as LoRaWAN, Sigfox, or proprietary sub-GHz protocols via SPI to an external radio. The 32MHz 16 MIPS core handles sensor fusion and encryption tasks within the active window. Engineers typically pair the GP203 with a 3V coin cell (CR2032) and an SPI radio like the Microchip MRFXLR3, achieving multi-year battery life on duty-cycled transmissions. The UQFN-36 5x5 mm footprint fits inside compact sensor enclosures.
Recommended
Industrial Data Loggers
Industrial data loggers benefit from the PIC24FJ32GP203-E/M5's -40C to +125C E-temp range, 32KB ECC Flash for reliable parameter storage, and 10-bit 1.1 Msps ADC with up to 13 channels for analog sensor acquisition. The Core Independent Peripherals (CLC, MCC) allow autonomous sampling without CPU intervention, freeing the core for compression and SD-card writing. ECC Flash corrects single-bit errors that occur at elevated temperature or in noisy industrial settings, improving long-term data integrity. The UQFN-36 5x5 mm package is small enough for handheld logger enclosures, and the wide 2.0-3.6V supply accepts unregulated battery or USB inputs. RTCC with calibration provides accurate timestamping for logged events.
Recommended
Medical Wearables and Health Monitors
Medical wearables leverage the PIC24FJ32GP203-E/M5's nanoWatt sleep modes and 32KB Flash to run heart-rate, SpO2, or motion-tracking algorithms while extending battery life across weeks of continuous monitoring. The 3 comparators can directly interface with analog front-ends from photoplethysmography (PPG) sensors, while the 10-bit ADC digitizes motion and biometric signals. ECC Flash prevents firmware corruption in patient-facing devices where reliability is safety-critical. The 2.0-3.6V supply range accepts a single Li-ion or coin-cell, and the UQFN-36 5x5 mm package fits wrist-worn form factors. RTCC with calibration enables accurate time-stamped health event logging for clinical applications.
Recommended
USB Human Interface Devices (HID)
While the PIC24FJ32GP203-E/M5 does not include the USB PHY (unlike the GB variant), it can still drive external USB-to-UART bridges or interface to USB-C power-delivery controllers. The 4 UART and 3 SPI peripherals allow multi-channel connectivity to wireless or wired peripherals. 32KB ECC Flash hosts HID class descriptors and report handlers, while the 8KB SRAM buffers HID reports during transmission. The 32MHz/16 MIPS core delivers responsive HID polling intervals below 1 ms for keyboards, mice, or game controllers. The 36-pin UQFN package enables slim, modern peripheral designs. Engineers typically pair the GP203 with an external MCP2200 USB-Serial converter.
Recommended
Consumer Appliance Control Boards
Consumer appliances such as coffee machines, washing machines, and HVAC controllers use the PIC24FJ32GP203-E/M5 for motor and user-interface control thanks to its 4 DMA channels, 5 timers, and PWM peripherals. The 27 I/O pins connect to keypads, displays, relays, and triac drivers, while the RTCC provides real-time scheduling for programmable operations. ECC Flash prevents firmware corruption in high-noise environments near motors and switching power supplies. The 2.0-3.6V supply accepts 3.3V regulated rails from appliance SMPS. The UQFN-36 5x5 mm package saves board space versus larger SOIC/SSOP variants in cost-sensitive consumer products.
Recommended
Automotive Sensor Modules
Automotive sensor modules benefit from the PIC24FJ32GP203-E/M5's wide -40C to +125C E-temp range and robust ECC Flash protection against bit errors in harsh under-hood environments. The 32KB Flash stores calibration data and diagnostic firmware, while the 10-bit ADC reads temperature, pressure, or position sensors. For AEC-Q100 qualification, the GP203-E/M5VAO variant is the automotive-grade equivalent in the same UQFN-36 package. The XLP sleep modes enable continuous battery monitoring on automotive key fobs and tire-pressure sensors without draining the battery. The 5x5 mm UQFN fits compact sensor housings.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP203-E/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GP203-I/M5 | PIC24FJ32GP203T-E/M5 | PIC24FJ32GP203-E/M5VAO | PIC24FJ64GP203-E/M5 | PIC24FJ32GP205-E/M5 | PIC24FJ128GL303-I/M5 |
|---|---|---|---|---|---|---|---|
| Package | 36-pin UQFN (5x5) | 36-pin UQFN (5x5) - same | 36-pin UQFN (5x5) - same | 36-pin UQFN (5x5) - same | 36-pin UQFN (5x5) - same | 36-pin UQFN (5x5) - same | 36-pin UQFN (5x5) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Operating Temperature | -40C to +125C (E-temp) | -40C to +85C (I-temp) | -40C to +125C (E-temp) | -40C to +125C, AEC-Q100 | -40C to +125C (E-temp) | -40C to +125C (E-temp) | -40C to +85C (I-temp) |
| Program Flash | 32 KB ECC | 32 KB ECC | 32 KB ECC | 32 KB ECC | 64 KB ECC (+100%) | 32 KB ECC | 128 KB ECC (+300%) |
| Data SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB (+100%) |
| 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 | 32 MHz / 16 MIPS |
| 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 | 2.0 V to 3.6 V |
| XLP Sleep Current | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA |
Key Differentiators
- Lowest-cost same-package variant with E-temp (vs PIC24FJ32GP203-I/M5)
- Automotive AEC-Q100 qualified equivalent available (vs PIC24FJ32GP203-E/M5VAO)
- Footprint-compatible flash expansion path (vs PIC24FJ64GP203-E/M5)
- Newer XLP architecture vs older GA family (vs PIC24FJ32GA102-I/SS)
Design Notes
Estimated: At full 32 MHz active with all peripherals enabled, the PIC24FJ32GP203-E/M5 typically draws 15-20 mA from a 3.3V supply. The UQFN-36 5x5 mm package has limited heat dissipation capability; ensure the exposed thermal pad is soldered to a continuous ground copper pour of at least 25 mm^2 to keep junction temperature rise below 30C above ambient. In high-temperature environments approaching +125C, derate the CPU duty cycle or use sleep modes to avoid thermal shutdown.
Place a 100 nF ceramic decoupling capacitor within 2 mm of each VDD pin and a single 10 uF bulk tantalum or ceramic capacitor near the package. Route AVDD and AVSS as separate analog supply islands connected to VDD/VSS at a single point (star ground) to minimize ADC noise. Keep clock traces (OSCI, OSCO) short and surround them with ground pour to reduce EMI. The exposed thermal pad must be soldered for mechanical reliability and thermal performance.
Do not exceed the absolute maximum VDD of 4.0V; transients above this will damage the internal regulator. Configure unused I/O pins as digital outputs driven low (not high-Z) to minimize current leakage in sleep mode. Always enable the JTAGEN fuse correctly during programming - if disabled, ICSP programming will fail and the part may appear 'bricked'. The internal LDO requires the ENVREG pin configuration to match the chosen voltage regulator mode (on-chip vs external).
Use the PMD (Peripheral Module Disable) registers to turn off unused peripherals during active mode - this can reduce active current by 30-50% in typical applications. For deep sleep, configure the RTCC and one CLC block to wake the MCU periodically while keeping everything else powered down. Estimated: a sensor node waking once per second with a 5 ms active window achieves average current below 100 uA on a 3V coin cell, yielding multi-year battery life.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard E-temp grade is not AEC-Q100 qualified - choose PIC24FJ32GP203-E/M5VAO for AEC-Q100 automotive qualification.
