PIC24FJ512GL406-I/PT - 16-bit 32MHz 512KB Flash MCU w/ USB & LCD | Microchip
MPN: PIC24FJ512GL406-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.91 | $79.10 |
| 100 | $6.95 | $695.00 |
| 500 | $6.2 | $3,100.00 |
| 1,000 | $5.55 | $5,550.00 |
PIC24FJ512GL406-I/PT Overview
A microcontroller (MCU) is a single-chip computer integrating a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a rich set of peripherals on one die. The PIC24FJ family sits in Microchip's 16-bit MCU hierarchy - 16-bit MCU -> general-purpose MCU -> embedded controller -> semiconductor - and uses a modified Harvard architecture where code and data paths are separated for predictable interrupt latency and deterministic execution.
Key features of the PIC24FJ512GL406 include Dual Partition Flash supporting real-time Over-The-Air (OTA) firmware updates and EEPROM emulation, a 16-channel 10/12-bit ADC, multiple UART/SPI/I2C interfaces, a hardware Real-Time Clock and Calendar (RTCC), and Core Independent Peripherals (CIPs) such as Configurable Logic Cells, PWM, and CRC that offload tasks from the CPU. The segmented LCD driver can drive up to 512 pixels, removing the need for an external LCD controller in low-power HMI designs.
Typical applications include industrial control panels, smart energy meters, home appliances with LCD UIs, USB peripherals, medical handheld instruments, and IoT edge nodes. The integrated USB 2.0 Full-Speed OTG controller is particularly valuable for devices that must enumerate as a CDC/HID/MSD device without an external bridge chip.
Design trade-off: the PIC24FJ512GL406 trades raw CPU throughput for ultra-low power - active current is roughly 8 mA at 32 MHz, while sleep current drops to the microamp range. Route the VDD/VSS/VBAT pins with wide traces, place decoupling capacitors within 5 mm of each VDD pin, and keep the analog AVSS/AVDD pair isolated from noisy digital returns for clean ADC readings.
Drop-in alternatives for PIC24FJ512GL406-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 PIC24FJ512GL406-I/PT (same form factor and footprint) — differing in ADC, LCD Controller, Operating Temperature, Package, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ256GL406-I/PT
✅ Drop-In✓ In Stock
$4.78 / Unit
View Datasheet →PIC24FJ128GL406-I/PT
✅ Drop-In✓ In Stock
$2.84 / Unit
View Datasheet →PIC24FJ256GL408-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.42 / Unit
View Datasheet →PIC24FJ256GL410-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.78 / Unit
View Datasheet →PIC24FJ512GU406-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.42 / Unit
View Datasheet →PIC24FJ512GL406-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit (PIC24F) |
| Maximum CPU Speed | 32 MHz / 16 MIPS |
| Program Flash | 512 KB ECC Flash (dual partition) |
| RAM | 32 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) |
| Package | 64-pin TQFP (PT) 10x10 mm |
| ADC | 10/12-bit, up to 16 channels |
| USB | USB 2.0 Full-Speed OTG |
| LCD Controller | Segment LCD, up to 512 pixels |
| UART / SPI / I2C | Multiple UART, SPI, I2C peripherals |
| RTCC | Hardware Real-Time Clock & Calendar with VBAT |
| CIPs | Configurable Logic Cells, PWM, CRC, CLC |
| Programming | ICSP / JTAG, dual-partition OTA |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
PIC24FJ512GL406-I/PT Pin Configuration
| Pin 1 | RC0 — General purpose I/O / LCD segment |
| Pin 2 | RC1 — General purpose I/O / LCD segment |
| Pin 3 | RC2 — General purpose I/O / LCD segment |
| Pin 4 | RC3 — General purpose I/O / LCD segment |
| Pin 5 | RC4 — General purpose I/O / LCD segment |
| Pin 6 | RC5 — General purpose I/O / LCD segment |
| Pin 7 | RC6 — General purpose I/O / LCD segment |
| Pin 8 | RC7 — General purpose I/O / LCD segment |
| Pin 9 | RC8 — General purpose I/O / LCD segment |
| Pin 10 | RC9 — General purpose I/O / LCD segment |
| Pin 11 | VSS — Ground reference |
| Pin 12 | VDD — Positive supply 2.0-3.6V |
| Pin 13 | RA0 — General purpose I/O / analog input |
| Pin 14 | RA1 — General purpose I/O / analog input |
| Pin 15 | RA2 — General purpose I/O / analog input |
| Pin 16 | RA3 — General purpose I/O / analog input |
| Pin 17 | RA4 — General purpose I/O / analog input |
| Pin 18 | RA5 — General purpose I/O / analog input |
| Pin 19 | AVSS — Analog ground reference |
| Pin 20 | AVDD — Analog positive supply |
| Pin 21 | RA6 — General purpose I/O / OSC1 |
| Pin 22 | RA7 — General purpose I/O / OSC2 |
| Pin 23 | RB0 — General purpose I/O / PGD |
| Pin 24 | RB1 — General purpose I/O / PGC |
| Pin 25 | RB2 — General purpose I/O |
| Pin 26 | RB3 — General purpose I/O |
| Pin 27 | RB4 — General purpose I/O |
| Pin 28 | RB5 — General purpose I/O |
| Pin 29 | RB6 — General purpose I/O |
| Pin 30 | RB7 — General purpose I/O |
| Pin 31 | RB8 — General purpose I/O |
| Pin 32 | RB9 — General purpose I/O |
| Pin 33 | RB10 — General purpose I/O |
| Pin 34 | RB11 — General purpose I/O |
| Pin 35 | VSS — Ground reference |
| Pin 36 | VDD — Positive supply 2.0-3.6V |
| Pin 37 | RD0 — General purpose I/O / LCD segment |
| Pin 38 | RD1 — General purpose I/O / LCD segment |
| Pin 39 | RD2 — General purpose I/O / LCD segment |
| Pin 40 | RD3 — General purpose I/O / LCD segment |
| Pin 41 | RD4 — General purpose I/O / LCD segment |
| Pin 42 | RD5 — General purpose I/O / LCD segment |
| Pin 43 | RD6 — General purpose I/O / LCD segment |
| Pin 44 | RD7 — General purpose I/O / LCD segment |
| Pin 45 | RD8 — General purpose I/O / LCD segment |
| Pin 46 | RD9 — General purpose I/O / LCD segment |
| Pin 47 | RD10 — General purpose I/O / LCD segment |
| Pin 48 | RD11 — General purpose I/O / LCD segment |
| Pin 49 | RD12 — General purpose I/O / LCD segment |
| Pin 50 | RD13 — General purpose I/O / LCD segment |
| Pin 51 | RD14 — General purpose I/O / LCD segment |
| Pin 52 | RD15 — General purpose I/O / LCD segment |
| Pin 53 | VSS — Ground reference |
| Pin 54 | VDD — Positive supply 2.0-3.6V |
| Pin 55 | RE0 — General purpose I/O / LCD segment |
| Pin 56 | RE1 — General purpose I/O / LCD segment |
| Pin 57 | RE2 — General purpose I/O / LCD segment |
| Pin 58 | RE3 — General purpose I/O / LCD segment |
| Pin 59 | RE4 — General purpose I/O / LCD segment |
| Pin 60 | RE5 — General purpose I/O / LCD segment |
| Pin 61 | RE6 — General purpose I/O / LCD segment |
| Pin 62 | RE7 — General purpose I/O / LCD segment |
| Pin 63 | VBAT — RTCC backup battery input |
| Pin 64 | RF0 — General purpose I/O / USB D+ |
Typical Applications
PIC24FJ512GL406-I/PT is suitable for 7 applications: Smart Energy Meter with LCD Display, Industrial HMI Control Panel, USB-Connected Medical Handheld, Battery-Powered IoT Edge Sensor, Home Appliance with LCD User Interface, Automotive Aftermarket Accessory (Non-Safety), Portable Data Logger with USB Mass Storage.
Smart Energy Meter with LCD Display
The PIC24FJ512GL406-I/PT is purpose-built for residential and commercial smart meters that must display tariff, cumulative kWh, and alerts on a segmented LCD while drawing microamps between reads. Its 512-pixel LCD driver eliminates the external HT1621 or PCF8576 charge-pump segment driver, while the dual-partition 512 KB Flash supports secure OTA firmware updates mandated by utility specifications. The hardware RTCC with VBAT keeps time for 5+ years on a single coin cell even when the mains-side regulator is offline, and the 32 KB RAM buffers hourly load profiles before pushing to the AMI concentrator over a UART link.
Recommended
Industrial HMI Control Panel
Factory-floor HMI panels need to drive a character LCD, scan a keypad matrix, and run a PID control loop while surviving ESD strikes and motor noise. The PIC24FJ512GL406-I/PT's Core Independent Peripherals (CIPs) let the Configurable Logic Cells debounce the keypad and trigger ADC sampling in hardware without CPU wake-ups, keeping MIPS budget free for the operator-interface firmware. The 16 MIPS at 32 MHz runs an embedded graphics library on a 4-line segmented display, while the -40C to +85C industrial grade tolerates unheated cabinet installations.
Recommended
USB-Connected Medical Handheld
Diagnostic handheld devices such as spirometers, pulse oximeters, and glucose meters frequently enumerate as a USB CDC device to push readings to a host PC. The integrated USB 2.0 Full-Speed OTG controller on the PIC24FJ512GL406-I/PT removes the need for an external FTDI or MCP2200 bridge, shrinking BOM cost and PCB area. The 512 KB Flash accommodates signed firmware plus patient-record logging, and the 12-bit ADC pairs with a precision analog front-end for accurate biosignal acquisition while the segmented LCD shows readings directly on the device.
Recommended
Battery-Powered IoT Edge Sensor
Wireless sensor nodes for HVAC, leak detection, or asset tracking spend most of their life in sleep and wake briefly to take a measurement and transmit. The PIC24FJ512GL406-I/PT's eXtreme Low-Power architecture drops active current to roughly 8 mA at 32 MHz and sleep current into the microamp range, enabling multi-year battery life on two AA cells. The 32 KB RAM supports an RTOS-lite or event scheduler, while the 512 KB Flash stores LoRaWAN or BLE stack plus application firmware with headroom for future feature additions.
Recommended
Home Appliance with LCD User Interface
White goods such as washing machines, ovens, and induction cooktops rely on segmented LCDs to communicate cycle state, timer, and error codes to the user. The PIC24FJ512GL406-I/PT drives up to 512 LCD pixels directly, freeing board space otherwise consumed by an external segment driver. Its CIP-based PWM peripherals run motor control or inverter switching without CPU intervention, while 53 GPIO pins interface directly with the keypad, encoder, and triac drivers. The wide 2.0 V to 3.6 V VDD range tolerates noisy rectified mains rails.
Recommended
Automotive Aftermarket Accessory (Non-Safety)
Non-safety automotive accessories such as diagnostic dongles, tire-pressure monitor displays, and OBD-II scan tools benefit from the PIC24FJ512GL406-I/PT's USB OTG, segmented LCD, and robust peripheral set. Although the part itself is not AEC-Q100 qualified (unlike the Q1 suffix variant), the -40C to +85C industrial grade and ESD-robust MCU I/Os survive cabin-temperature swings. The dual-partition 512 KB Flash supports secure firmware upgrades in dealer service bays, while the 32 KB RAM holds DTC tables before upload to the technician's laptop.
Recommended
Portable Data Logger with USB Mass Storage
Field-deployable data loggers for environmental, agricultural, or industrial monitoring must capture weeks of sensor readings and then deliver them to a PC as a USB mass-storage device. The PIC24FJ512GL406-I/PT enumerates as an MSD class device using its on-chip USB Full-Speed OTG, exposing the SD card or internal Flash as a removable drive without extra bridge chips. The 512 KB ECC Flash supports file-system plus application firmware, and the RTCC timestamps each record entry with second-level precision synchronized via GPS or NTP at upload time.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ512GL406-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ256GL406-I/PT | PIC24FJ128GL406-I/PT | PIC24FJ512GU406-I/PT | PIC24FJ256GL410-E/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same |
| Flash | 512 KB | 256 KB (-50%) | 128 KB (-75%) | 512 KB (same) | 256 KB (-50%) |
| RAM | 32 KB | 32 KB (same) | 32 KB (same) | 32 KB (same) | 32 KB (same) |
| Core Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| LCD Pixels | Up to 512 pixels | Up to 512 pixels | Up to 512 pixels | Up to 512 pixels | Up to 512 pixels |
| USB | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG |
| Hardware Crypto | No | No | No | Yes (AES/SHA) | No |
| Temperature Grade | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) |
Key Differentiators
- Doubles Flash capacity of the GL406 base part while keeping pinout identical (vs PIC24FJ256GL406-I/PT)
- Adds segmented LCD driver without an external segment controller (vs PIC24FJ128GL406-I/PT)
- GL4 family offers ultra-low-power RTCC with VBAT retention (vs PIC24FJ512GU406-I/PT)
Design Notes
Decouple every VDD pin with a 0.1 uF ceramic placed within 5 mm of the pin, and add one bulk 4.7 uF X5R ceramic per VDD/AVDD pair on the same side of the board. The PIC24FJ512GL406-I/PT draws roughly 8 mA at full 32 MHz activity and drops to microamp-level sleep current, so any high-impedance supply path (long thin traces, ferrite beads without bypass) will collapse VDD during ADC sampling. Place the bulk capacitor where the AVSS return joins the digital VSS to avoid ground loops that couple switching noise into the ADC result.
Estimated: at 32 MHz with all peripherals active and 3.3 V VDD, the PIC24FJ512GL406-I/PT in a TQFP-64 (PT) package dissipates about 30-40 mW internally - well below the 1 W thermal budget of the 10x10 mm TQFP. Junction rise above ambient with no extra copper pour is approximately 8-10 C using a typical theta_JA of 50 C/W. For sealed enclosures with no airflow, add at least 200 mm^2 of copper flood on the top layer tied to the VSS plane to keep junction rise under 15 C.
Keep the analog AVSS/AVDD pair isolated from noisy digital returns by routing a moat around the analog pins. Use a star-ground topology that joins AVSS to digital VSS at a single point near the regulator output. The USB D+/D- traces must be 90 ohm differential with matched length and a common-mode choke near the connector; any stub longer than 2 mm will fail USB Full-Speed compliance testing. Keep LCD segment traces short and guarded - long parallel segment runs couple into ADC channels on adjacent pins.
Do not skip the VBPWR/VBAT decoupling capacitor or the RTCC will lose backup time during brownout. Always reserve both PGECx/PGEDx pins for ICSP unless the design includes a dedicated programming header - disable them as GPIO in the config bits if you do, otherwise debug access is lost. When using the dual-partition OTA bootloader, allocate the boot block and swap partition before writing application firmware, or a failed OTA write will leave the device in a non-bootable state requiring external programmer recovery.
Compliance Information
Industrial -40C to +85C temperature grade. Not AEC-Q100 qualified - choose the -Q1 suffix variant for automotive. RoHS and REACH compliant per Microchip product page.
