PIC24FJ128GU405-I/M4 - 16-bit 32MHz USB MCU, 128KB Flash | Microchip
MPN: PIC24FJ128GU405-I/M4 ✓ פעילPIC24FJ128GU405-I/M4 סקירה
A 16-bit microcontroller (MCU) is a single-chip processor whose arithmetic logic unit, registers, and data bus are 16 bits wide. Compared to 8-bit MCUs (e.g., PIC16, ATmega), 16-bit devices offer a richer instruction set, higher computational throughput, larger addressable memory spaces, and more sophisticated peripherals for mixed-signal designs. The PIC24FJ family sits between 8-bit PIC MCUs and the 32-bit PIC32MX/dsPIC families in Microchip's portfolio, targeting low-power connected applications that still need deterministic real-time response.
Key features of the PIC24FJ128GU405-I/M4 include full-speed USB 2.0 device/host/On-The-Go support, a segmented LCD driver (up to 96 segments depending on configuration), multiple Core Independent Peripherals (CIPs) such as Configurable Logic Cells, Multiple Capture/Compare/PWM modules, a 12-bit ADC with up to 16 channels, and a hardware crypto engine for secure OTA updates. The integrated LCD controller and USB peripheral on the same die reduce BOM cost and PCB area for human-interface connected products.
Architecturally, this device uses a modified Harvard architecture with separate program and data paths, a 24-bit instruction word optimized for C compiler code density, and a wide variety of low-power modes (Doze, Idle, Sleep, and Deep Sleep with RTCC). Dual Partition Flash allows one partition to run while the other receives OTA updates, enabling firmware to be swapped without application downtime.
Typical applications include USB-connected IoT sensor nodes, smart home control panels with LCD readouts, medical glucose meters, industrial HMI terminals, secure OTA-updatable consumer appliances, and battery-powered data loggers. The combination of LCD + USB + OTA on a single 16-bit MCU makes it well suited to connected devices that display data locally while occasionally syncing to the cloud.
When designing with this part, plan the pinout carefully because the UQFN-48 (6x6 mm) package has a small exposed pad that must be soldered to a thermal copper pour for mechanical reliability and electrical grounding. Use the MCC (MPLAB Code Configurator) plugin to generate USB stack, LCD driver, and CIP peripheral initialization code, which dramatically shortens firmware development time.
This page synthesizes distributor pricing (as of 2026-09-29), drop-in alternatives within the PIC24FJ family, and practical PCB/firmware design notes not consolidated in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור PIC24FJ128GU405-I/M4 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC24FJ128GU405-I/M4 (אותו גורם צורה וטביעת רגל) — שונים ב ADC, Operating Temperature, Package, USB, Core Architecture.
PIC24FJ256GU405-I/M4
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PIC24FJ128GL405-I/M4
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GU405-I/M4 דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Program Memory (Flash) | 128 KB (128K x 8) dual-partition |
| RAM | 32 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| טמפרטורת פעולה | -40 C to +85 C (industrial, -I suffix) |
| מארז | 48-pin UQFN (6x6 mm) with exposed pad |
| סוג הרכבה | Surface Mount |
| USB | Full-speed USB 2.0 device/host/OTG |
| LCD Controller | Integrated segmented LCD driver |
| ADC | 12-bit SAR ADC |
| Timers | Multiple 16-bit and 32-bit timer/capture/PWM modules |
| Communication | UART, SPI, I2C, USB, PMP |
| Core Independent Peripherals (CIPs) | CLC, PWM, Configurable Logic, etc. |
| OTA Support | Dual Partition Flash with EEPROM Emulation |
| רמת MSL | MSL3 (per JEDEC J-STD-020) |
| סטטוס RoHS | Compliant |
| Lead-Free | Yes (per Microchip product page) |
מדריך תצורת פינים של PIC24FJ128GU405-I/M4 48-pin uqfn (6x6 mm) with exposed pad
תצורת פינים עבור PIC24FJ128GU405-I/M4 (מארזת 48-pin uqfn (6x6 mm) with exposed pad). מעגל משולב דיגיטלי זה כולל GPIO, ממשקי תקשורת (UART, SPI, I2C) ופיני מתח. יש לעיין בגיליון הנתונים של היצרן לפונקציות פינים חלופיות ולאפשרויות תצורה. חיוני לתכנון מערכות משובצות ולפריסת PCB.
אין נתוני פריסת פינים מפורטים עבור PIC24FJ128GU405-I/M4.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
PIC24FJ128GU405-I/M4 מתאים עבור 6 יישוםs: USB-Connected IoT Sensor Nodes, Smart Home Control Panels with LCD, Medical Blood-Pressure and Glucose Monitors, Industrial HMI Terminals and Handhelds, Secure OTA-Updatable Consumer Appliances, Battery-Powered Data Loggers.
USB-Connected IoT Sensor Nodes
The PIC24FJ128GU405-I/M4 is an excellent fit for USB-connected IoT sensor nodes because it integrates a full-speed USB 2.0 transceiver (device/host/OTG) plus 128 KB of dual-partition Flash that supports real-time Over-The-Air (OTA) firmware updates. With 32 KB RAM and a 12-bit ADC, the device can read multi-channel sensor data, buffer it locally, and stream over USB at low 32 MHz CPU load (~16 MIPS). Placed on a compact 6x6 mm UQFN footprint, it enables thumb-drive-sized sensor peripherals that plug directly into a USB host for both power and data, eliminating Li-ion chargers and RF modules in factory-floor and lab settings.
מומלץ
Smart Home Control Panels with LCD
For smart-home control panels (thermostats, alarm keypads, water-heater controllers), the PIC24FJ128GU405-I/M4 is a strong fit because it integrates a segmented LCD controller supporting up to 96 segments, eliminating an external LCD driver IC. The 128 KB dual-partition Flash supports secure OTA updates of the user interface without taking the panel offline. Paired with a touch-sensing CIP peripheral and Core Independent Logic Cells, the MCU can handle capacitive touch, LCD refresh, and keypad scanning in hardware while the CPU sleeps, dramatically reducing active-mode current draw in always-on wall-mounted devices.
מומלץ
Medical Blood-Pressure and Glucose Monitors
The PIC24FJ128GU405-I/M4 is widely used in medical blood-pressure and glucose monitors because of its integrated segmented LCD controller for the patient-facing display, low-power Sleep and Deep Sleep modes for battery longevity, and 12-bit ADC for accurate pressure/sensor readout. The 32 KB RAM comfortably buffers waveform data before display. Its 2.0 V to 3.6 V operating range supports 2x AA alkaline cells directly. The hardware AES crypto engine in the GU family helps implement secure OTA firmware patches required by medical device cybersecurity guidance.
מומלץ
Industrial HMI Terminals and Handhelds
Industrial HMI terminals and barcode-scanner handhelds benefit from the PIC24FJ128GU405-I/M4 because its 16 MIPS throughput handles LCD refresh, button input, USB connectivity to a host PC, and serial communication to field sensors simultaneously. The 128 KB Flash supports rich display fonts and protocol libraries, while 32 KB RAM accommodates buffer space for USB CDC and UART simultaneously. Industrial temperature grade (-40 C to +85 C) and integrated Core Independent Peripherals (CIPs) provide deterministic real-time response without CPU involvement.
מומלץ
Secure OTA-Updatable Consumer Appliances
For secure OTA-updatable consumer appliances (smart coffee makers, network-connected air purifiers, programmable slow cookers), the PIC24FJ128GU405-I/M4's dual-partition Flash architecture is a key feature: one partition runs the live appliance while the other receives a signed firmware update via USB or a connected Wi-Fi/BLE module, then the bootloader atomically swaps partitions on the next power cycle. The hardware AES and true RNG on the GU variant accelerate secure boot, and the integrated USB allows direct firmware flashing from a phone or PC without needing a separate programming header.
מומלץ
Battery-Powered Data Loggers
Battery-powered data loggers (cold-chain temperature recorders, environmental monitors, fleet tracking tags) are well served by the PIC24FJ128GU405-I/M4 because its Deep Sleep current (with RTCC running) is in the microamp range, and its 12-bit ADC can sample temperature, humidity, or vibration sensors periodically while the CPU is asleep. The 128 KB dual-partition Flash stores both the firmware and months of logged data without an external EEPROM, while the USB peripheral enables quick data offload when the logger is plugged into a PC for analysis.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC24FJ128GU405-I/M4 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC24FJ128GU405-I/PT | PIC24FJ256GU405-I/M4 | PIC24FJ128GL405-I/M4 |
|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) M4 | 48-TQFP (7x7 mm) | 48-UQFN (6x6 mm) M4 - same | 48-UQFN (6x6 mm) M4 - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 128 KB dual-partition | 128 KB dual-partition - same | 256 KB dual-partition (+100%) | 128 KB dual-partition - same |
| RAM | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS - same | 32 MHz / 16 MIPS - same | 32 MHz / 16 MIPS - same |
| USB | Full-speed USB 2.0 device/host/OTG | Full-speed USB 2.0 device/host/OTG - same | Full-speed USB 2.0 device/host/OTG - same | Limited/no USB OTG (GL family) |
| LCD Controller | Integrated segmented LCD | Integrated segmented LCD - same | Integrated segmented LCD - same | Integrated segmented LCD - same |
| OTA Dual-Partition Flash | Yes | Yes - same | Yes - same | Yes (GL family) - same |
מבדילים עיקריים
- Higher Flash density within same UQFN-48 footprint (לעומתPIC24FJ128GL405-I/M4)
- Compact 6x6 mm UQFN footprint vs larger TQFP (לעומתPIC24FJ128GU405-I/PT)
- Dual-partition Flash + integrated USB in one die (לעומתPIC24FJ128GA705-I/PT)
הערות תכנון
The 48-UQFN (6x6 mm) package has a large center exposed pad that must be soldered to a thermal copper pour on the top PCB layer for mechanical reliability and electrical grounding. If the pad is left unsoldered, the part can fail under thermal cycling or vibration. Recommended land pattern is provided in the Microchip PIC24FJ GU4 family datasheet package section.
Use a low-Iq LDO such as MCP1700 (1.6 uA quiescent) to power the VDD rail when running from a coin-cell or 2x AA battery. The MCU's Deep Sleep current is dominated by the regulator quiescent current, so choosing a sub-2 uA LDO preserves months of battery life. Add a 10 uF + 0.1 uF decoupling pair on each VDD pin as recommended in the datasheet power supply section.
Do not omit the external 12 MHz or high-speed crystal required for USB operation; the integrated 32 kHz low-power oscillator is too inaccurate for USB Full-Speed signalling. Also configure the FSOSCEN and POSCEN bits correctly in the OSCCON register, or USB enumeration will fail intermittently on some hosts. Use the MPLAB Code Configurator (MCC) USB stack to avoid clock-configuration mistakes.
מידע על תאימות
RoHS and lead-free compliance per Microchip product page; automotive AEC-Q100 qualification not applicable to this MCU grade.
