PIC24FJ512GU406-I/PT - 16-Bit 32MHz 512KB Flash MCU with USB & LCD | Microchip
MPN: PIC24FJ512GU406-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.61 | $76.10 |
| 100 | $6.78 | $678.00 |
| 500 | $6.05 | $3,025.00 |
| 1,000 | $5.42 | $5,420.00 |
PIC24FJ512GU406-I/PT Overview
A 16-bit microcontroller (MCU) is a microprocessor with a 16-bit data path, ALU, and registers, offering higher code density, faster arithmetic, and richer peripheral integration than 8-bit MCUs while remaining simpler and lower-power than 32-bit Cortex-M devices. Within the embedded hierarchy, MCUs belong to microcontrollers, which sit under microprocessors, which are subclasses of semiconductor ICs. The PIC24F 'J' series specifically targets ultra-low-power applications with nanoWatt sleep modes and operates from a 2.0V to 3.6V supply, suiting battery-powered and energy-harvesting designs.
Key features include up to 512KB self-programmable Flash with Error-Correcting Code (ECC) and live Dual Partition OTA update support, 32KB SRAM, hardware Real-Time Clock and Calendar (RTCC), 10-bit and 12-bit ADC modules, multiple UART/SPI/I2C peripherals, and segmented LCD driver capable of driving up to 60 segments (PT package). The 64-pin TQFP-64 (10x10) provides ample I/O with extensive remappable peripherals via PPS (Peripheral Pin Select).
The architecture is built on a modified Harvard structure with 16-bit instructions and a 24-bit instruction word, enabling compact code and deterministic interrupt response. ECC-protected Flash significantly improves reliability in industrial and consumer applications subject to soft-error upset, while the dual-partition Flash scheme allows background firmware updates with atomic rollback on failure - a critical feature for IoT and connected devices that cannot tolerate bricked field units.
Typical applications include USB-enabled IoT sensor hubs, low-power medical monitoring devices with LCD readouts, industrial HMI panels with segmented displays, battery-powered data loggers, and consumer appliances with USB diagnostics or firmware update capability. The combination of integrated LCD and USB in a single MCU eliminates external drivers and bridges, reducing BOM and PCB area.
When designing with this device, pay careful attention to decoupling: place 100nF ceramic capacitors as close as possible to every VDD/VSS pair and a bulk 4.7uF to 10uF tantalum or ceramic near the package. The USB DP/DM traces require 90-ohm differential impedance and a precision full-speed USB pull-up resistor on D+; for robust USB-IF compliance, refer to Microchip application note AN1227. SegLCD bias generation can be routed through internal charge pump or external resistor ladder - verify contrast across the full -40C to +85C temperature range.
This page synthesizes distributor pricing, drop-in compatible PIC24FJ family alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an engineering decision aid beyond raw specifications.
Drop-in alternatives for PIC24FJ512GU406-I/PT — 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 PIC24FJ512GU406-I/PT (same form factor and footprint) — differing in Core Architecture, Package, USB, LCD Controller, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ512GU405-I/PT
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC24FJ512GL406-I/PT
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC24FJ256GU406-I/PT
✅ Drop-In✓ In Stock
$2.69 / Unit
View Datasheet →PIC24FJ128GU406-I/PT
✅ Drop-In✓ In Stock
$3.36 / Unit
View Datasheet →PIC24FJ512GU406-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit (modified Harvard, 24-bit instruction word) |
| CPU Core | PIC24F |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 512 KB (512K x 8) with ECC and Dual Partition |
| SRAM | 32 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial, 'I' suffix) |
| Package | 64-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| USB Peripheral | USB 2.0 Full-Speed (12 Mbps) Device/Host/OTG |
| LCD Controller | Segmented LCD driver (up to 60 segments on PT package) |
| ADC | 10-bit and 12-bit ADC modules |
| Communication Peripherals | UART, SPI, I2C (multiple instances via PPS) |
| Core Independent Peripherals (CIPs) | Yes (CLC, MCCP, SMT, CRC, RTCC, PWM, etc.) |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
PIC24FJ512GU406-I/PT 64-pin tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for PIC24FJ512GU406-I/PT (64-pin tqfp (10x10 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC24FJ512GU406-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24FJ512GU406-I/PT is suitable for 6 applications: USB-Connected IoT Sensor Hub, Battery-Powered Medical Monitoring Device with LCD, Industrial HMI Panel with Segmented LCD, USB-Equipped Consumer Appliance with Firmware Update, Data Logger with USB Mass-Storage Download, Automotive Aftermarket Accessory (Non-Safety).
USB-Connected IoT Sensor Hub
The PIC24FJ512GU406-I/PT's integrated USB 2.0 full-speed peripheral and 512KB Flash make it ideal for USB-connected IoT sensor hubs that aggregate Modbus or I2C sensor data and present it as a USB CDC or HID device to a host PC. With 32KB SRAM the MCU can buffer multi-sensor frames without CPU stalls, while Core Independent Peripherals (CIPs) like CLC and SMT handle signal conditioning and timing in hardware, freeing the CPU for protocol processing. The dual-partition Flash enables live OTA firmware updates over USB with atomic rollback - critical for field-deployed IoT gateways that cannot tolerate bricking. Compared to discrete USB-to-UART bridges plus an external MCU, the integrated USB saves BOM cost, PCB area, and firmware complexity.
Recommended
Battery-Powered Medical Monitoring Device with LCD
The PIC24FJ512GU406-I/PT's segmented LCD controller (up to 60 segments on the TQFP-64), 2.0V to 3.6V supply range, and nanoWatt sleep modes suit battery-powered medical monitoring devices such as glucose meters, pulse oximeters, and digital thermometers. The LCD driver supports 1/3 bias with internal charge pump, eliminating external bias resistors and reducing quiescent current; CIPs like the RTCC keep time accurately while the CPU sleeps at microamp-level currents. The 12-bit ADC captures precise analog measurements, while 32KB SRAM stores rolling buffers for trend analysis. Industrial -40C to +85C temperature grading ensures compliance with home-healthcare and clinical environments, and the dual-partition Flash allows safe firmware updates for FDA-tracked revisions.
Recommended
Industrial HMI Panel with Segmented LCD
The PIC24FJ512GU406-I/PT integrates both USB diagnostics and segmented LCD control, making it well-suited for industrial HMI panels such as machine controllers, pump status displays, and process-indicator readouts. The 60-segment LCD can drive multi-digit numeric displays, status icons, and bar graphs in 1/3 bias mode, while the 32MHz CPU drives a responsive user interface with keypad scanning and menu navigation. CIPs including the MCCP (Multi-Channel Capture/Compare/PWM) handle backlight dimming and buzzer tone generation in hardware, offloading the CPU. Industrial -40C to +85C operation, ECC-protected Flash, and dual-partition OTA updates deliver the long-term reliability required in factory-floor equipment.
Recommended
USB-Equipped Consumer Appliance with Firmware Update
The PIC24FJ512GU406-I/PT is well-matched to USB-equipped consumer appliances such as smart coffee makers, connected air purifiers, and USB-rechargeable grooming devices that need firmware update capability after shipment. The integrated USB port enables factory programming and field firmware updates via USB mass storage bootloaders, while 512KB Flash accommodates feature-rich application code with multiple protocol stacks. CIPs handle appliance-specific tasks like PWM fan control, ADC battery monitoring, and I2C sensor polling without CPU intervention, reducing MIPS requirements. The 2.0V to 3.6V range supports direct Li-ion battery operation, and segmented LCD support allows built-in status indicators without an extra display driver chip.
Recommended
Data Logger with USB Mass-Storage Download
The PIC24FJ512GU406-I/PT's 512KB Flash (configurable as data Flash via EEPROM emulation) plus full-speed USB mass-storage capability enables compact, battery-powered data loggers that download recordings by appearing as a USB drive to any PC. With 32KB SRAM providing capture buffering and the segmented LCD displaying real-time status, the MCU eliminates the external USB bridge chip traditionally required. The internal RTCC timestamps samples with seconds-to-years accuracy across the industrial temperature range, while nanoWatt sleep modes extend battery life between sample bursts. Dual-partition Flash supports field firmware updates without removing the logger from service.
Recommended
Automotive Aftermarket Accessory (Non-Safety)
The PIC24FJ512GU406-I/PT's industrial -40C to +85C rating, USB port, and segmented LCD support suit automotive aftermarket accessories such as USB-charging monitors, tire-pressure display units, and OBD-II diagnostic readers. The dual-partition Flash enables safe firmware updates via USB during vehicle service visits, while 32KB SRAM buffers OBD-II PID streams. CIPs handle CAN-to-UART bridging, ADC battery voltage monitoring, and PWM display backlight control without CPU load. Designers should note the part is not AEC-Q100 qualified; for safety-critical automotive applications, Microchip's PIC24HJ or dsPIC33 families are recommended instead.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ512GU406-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ512GU405-I/PT | PIC24FJ512GL406-I/PT | PIC24FJ256GU406-I/PT | PIC24FJ128GU406-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB (-50%) | 128 KB (-75%) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB Peripheral | USB 2.0 Full-Speed Device/Host/OTG | USB 2.0 Full-Speed | No USB (-100%) | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| 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 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Dual-Partition Flash OTA | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Largest Flash in TQFP-64 PIC24FJ family with ECC and Dual Partition (vs PIC24FJ256GU406-I/PT)
- Integrated USB peripheral in TQFP-64 footprint (vs PIC24FJ512GL406-I/PT)
- PIC24F core with extensive CIPs and Peripheral Pin Select (vs PIC24FJ128GU406-I/PT)
Design Notes
Place a 100nF ceramic decoupling capacitor within 3mm of every VDD pin pair (VDD/VSS), and add a single bulk 4.7uF to 10uF tantalum or ceramic capacitor near the package. The USB DP and DM traces must be routed as a 90-ohm differential pair with continuous ground reference, length-matched to within 150 mil, and kept away from switching nodes to maintain USB-IF compliance per Microchip application note AN1227. The 64-pin TQFP has an exposed thermal pad on the bottom of some TQFP variants; refer to the package drawing to confirm whether the PT package requires this pad to be soldered for thermal dissipation.
Do not assume all 64-pin PIC24FJ variants share identical pinout - the GL (no-USB) family repurposes the USB pins as standard I/O, so firmware must be recompiled and the USB pull-up resistor removed when migrating between GU and GL parts. The internal voltage regulator requires an external 1uF to 10uF capacitor on the VCAP pin for stable core voltage; leaving this capacitor off causes erratic behavior or POR failures. SegLCD bias generation: select internal charge pump or external resistor ladder based on segment count and current draw, and always verify contrast across the full -40C to +85C temperature range.
The PIC24FJ512GU406-I/PT's full-speed USB DP/DM lines must meet USB 2.0 signal-integrity requirements: 90-ohm differential impedance, common-mode choke optional for EMI suppression, and a 1.5k-ohm pull-up resistor on D+ (or D- for low-speed) for speed indication. Place the pull-up resistor near the MCU D+ pin and switch it via a GPIO for soft-connect/disconnect. For host-mode operation, add external VBUS 5V tolerance protection (TVS diode) on the VBUS pin and verify 8kV ESD performance per IEC 61000-4-2 if the design will be used in industrial environments.
Compliance Information
RoHS compliant per JLCPCB part listing (jlcpcb.com/partdetail/PIC24FJ512GU406-I-PT/C3228419). Industrial -40C to +85C temperature grade ('I' suffix). Not AEC-Q100 qualified - for AEC-Q100 automotive applications, use dsPIC33 or PIC32 families. REACH compliance confirmed via Microchip environmental documentation.
