PIC24FJ128GU405-I/M4 - 16-bit 32MHz USB MCU, 128KB Flash | Microchip
Référence : PIC24FJ128GU405-I/M4 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.78 | $3,78 |
| 10 | $3.42 | $34,20 |
| 100 | $2.86 | $286,00 |
| 500 | $2.34 | $1 170,00 |
| 1 000 | $1.95 | $1 950,00 |
| 3 000 | $1.61 | $4 830,00 |
PIC24FJ128GU405-I/M4 Présentation
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.
Alternatives de remplacement direct pour PIC24FJ128GU405-I/M4 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC24FJ128GU405-I/M4 (même facteur de forme et même empreinte) — différant par ADC, Operating Temperature, Package, USB, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC24FJ256GU405-I/M4
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC24FJ128GL405-I/M4
✅ Remplacement direct✓ En stock
$4.09 / unité
Voir la fiche technique →PIC24FJ128GU405-I/M4 Valeurs maximales et caractéristiques électriques
| 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 |
| Température de fonctionnement | -40 C to +85 C (industrial, -I suffix) |
| Boîtier | 48-pin UQFN (6x6 mm) with exposed pad |
| Type de montage | 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 |
| Niveau MSL | MSL3 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
| Lead-Free | Yes (per Microchip product page) |
Guide de configuration des broches du PIC24FJ128GU405-I/M4 48-pin uqfn (6x6 mm) with exposed pad
Configuration des broches du PIC24FJ128GU405-I/M4 (boîtier 48-pin uqfn (6x6 mm) with exposed pad). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour PIC24FJ128GU405-I/M4.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
PIC24FJ128GU405-I/M4 convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC24FJ128GU405-I/M4 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Higher Flash density within same UQFN-48 footprint (vs PIC24FJ128GL405-I/M4)
- Compact 6x6 mm UQFN footprint vs larger TQFP (vs PIC24FJ128GU405-I/PT)
- Dual-partition Flash + integrated USB in one die (vs PIC24FJ128GA705-I/PT)
Notes de conception
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.
Informations de conformité
RoHS and lead-free compliance per Microchip product page; automotive AEC-Q100 qualification not applicable to this MCU grade.
