PIC24FJ512GL408T-I/PT - 16-bit 32MHz 512KB Flash MCU 80-TQFP
MPN: PIC24FJ512GL408T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.2 | $9.20 |
| 10 | $8.45 | $84.50 |
| 100 | $7.6 | $760.00 |
| 500 | $6.85 | $3,425.00 |
| 1,000 | $6.1 | $6,100.00 |
PIC24FJ512GL408T-I/PT Overview
A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory (Flash), data memory (SRAM), and peripheral interfaces into a single chip. Within the broader taxonomy, PIC24F MCUs belong to the 16-bit microcontroller category, which sits between 8-bit MCUs (e.g., PIC16, ATmega) and 32-bit MCUs (e.g., PIC32, STM32). They are widely deployed in industrial, consumer, and IoT applications where moderate computational throughput, low power, and rich analog/mixed-signal peripherals are required.
Key differentiating features include hardware ECC on Flash memory for improved reliability, dual-partition Flash enabling live OTA firmware updates without downtime, segmented LCD driver capable of up to 472 segments, and an integrated USB 2.0 Full-Speed controller. The CPU features a modified Harvard architecture with a 16-bit data path and 24-bit instruction word, executing most instructions in one cycle. The CIPs ecosystem includes configurable logic cells, multiple timers, ADC, comparators, and PWM outputs that operate independently of the CPU.
Typical applications for this device span industrial HMI panels, USB-connected embedded peripherals, IoT edge nodes with OTA capability, medical instruments, automotive telematics (non-AEC-Q100 variants only), and consumer white goods with LCD user interfaces. Its dual-partition Flash plus USB combination is particularly attractive for designs requiring secure field firmware upgrades via USB or wireless backhaul.
When designing with this part, allocate sufficient decoupling (100nF + bulk 4.7uF near VDD/AVDD pins) and follow Microchip's TQFP-80 land pattern recommendations. Ensure the TQFP thermal pad (if present in your layout) is properly soldered for improved power dissipation under full USB and LCD drive loads.
This page synthesizes distributor pricing, pin-to-pin drop-in alternatives within the PIC24FJ family, and practical PCB design notes not collected in the manufacturer datasheet alone, offering a one-stop engineering summary.
Drop-in alternatives for PIC24FJ512GL408T-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 PIC24FJ512GL408T-I/PT (same form factor and footprint) — differing in USB, ADC, Operating Temperature, Package, Program Flash.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ512GL408-I/PT
✅ Drop-In✓ In Stock
$6.3 / Unit
View Datasheet →PIC24FJ512GL408-E/PT
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →PIC24FJ512GL406-I/PT
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC24FJ512GL408T-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC24F |
| Series | PIC24FJ GL4 |
| Core | 16-bit PIC |
| CPU Speed | 32 MHz / 16 MIPS |
| Flash Memory | 512 KB (512K x 8) with ECC and dual-partition |
| SRAM | 32 KB |
| EEPROM Emulation | Yes (via Flash) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 70 |
| Package | 80-pin TQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (I-grade) |
| USB | USB 2.0 Full-Speed (Host/Device) |
| LCD Controller | Segment LCD, up to 472 segments |
| AEC-Q100 | Not qualified |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC24FJ512GL408T-I/PT 80-pin tqfp (12x12 mm) Pin Configuration Guide
Pin configuration for PIC24FJ512GL408T-I/PT (80-pin tqfp (12x12 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 PIC24FJ512GL408T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24FJ512GL408T-I/PT is suitable for 7 applications: Industrial HMI with Segment LCD, USB-Connected Embedded Peripherals, IoT Edge Nodes with OTA Firmware Update, Medical Instrumentation and Monitoring, Consumer White Goods with LCD UI, Building Automation and Lighting Control, Data Logging and Test Instrumentation.
Industrial HMI with Segment LCD
The PIC24FJ512GL408T-I/PT is ideal for industrial HMI panels thanks to its integrated segment LCD controller capable of driving up to 472 segments in 8-common mode. With 512 KB of ECC Flash and 32 KB SRAM, the MCU can host rich graphical menus and multi-language fonts while keeping the BOM small by removing an external LCD driver. The 70 I/O pins in the 80-TQFP package allow direct connection to matrix keypads, encoders, and sensor inputs typical of machine operator interfaces.
Recommended
USB-Connected Embedded Peripherals
The PIC24FJ512GL408T-I/PT integrates a USB 2.0 Full-Speed controller with on-chip PHY, eliminating the need for an external USB interface chip. Combined with 512 KB ECC Flash and 16 MIPS throughput, the MCU can serve as a USB host or device in HID, CDC, or vendor-class peripherals such as industrial probes, dataloggers, or medical instruments. According to the Microchip datasheet, the USB module operates directly from the 2.0-3.6 V supply with no external regulator required.
Recommended
IoT Edge Nodes with OTA Firmware Update
The PIC24FJ512GL408T-I/PT's dual-partition Flash architecture enables live Over-The-Air (OTA) firmware updates where one Flash bank runs the active application while the other receives the new image, eliminating device downtime. Combined with USB and the rich CIP peripherals (configurable logic, timers, ADC), the MCU is suited for edge gateways, smart sensors, and connected appliances that must update firmware securely in the field. ECC on Flash improves reliability for unattended deployments.
Recommended
Medical Instrumentation and Monitoring
The PIC24FJ512GL408T-I/PT suits medical monitoring devices with its low-noise 12-bit ADC, ample 32 KB SRAM for buffering sample streams, and 512 KB Flash for storing calibration tables and UI state. The integrated LCD controller drives patient-facing readouts, while 70 I/O interfaces with sensors, pumps, and isolated comms. According to the datasheet, the I-grade (-40C to +85C) operating range covers most clinical environments; medical designs must still validate IEC 60601 compliance separately.
Recommended
Consumer White Goods with LCD UI
The PIC24FJ512GL408T-I/PT delivers a cost-effective solution for washing machines, microwaves, and HVAC controllers that need a multi-segment LCD and USB service-port. Its 16 MIPS core processes UI logic and motor-control loops simultaneously through the CIP peripheral set. The 80-TQFP footprint fits compact appliance PCBs, and Microchip's MPLAB X ecosystem with Harmony drivers shortens development of capacitive-touch and rotary-encoder interfaces alongside the LCD.
Recommended
Building Automation and Lighting Control
The PIC24FJ512GL408T-I/PT fits building automation hubs where it aggregates sensor inputs over UART/I2C/SPI and presents status on a segment LCD. The 70 I/O lines support multiple keypads and dimmer interfaces; ECC Flash keeps configuration data reliable for years. The MCU's 16 MIPS throughput handles BACnet or Modbus stack parsing while the USB enables service-port diagnostics. The I-grade temperature rating covers indoor commercial deployments.
Recommended
Data Logging and Test Instrumentation
The PIC24FJ512GL408T-I/PT is well suited for portable data loggers and bench test instruments because of its 512 KB ECC Flash (large sample buffers with EEPROM emulation), 32 KB SRAM, and integrated USB for PC connectivity. The 12-bit ADC at 200 ksps captures sensor or stimulus waveforms, while the 80-TQFP package offers easy probing access. According to the datasheet, the I-grade part operates from 2.0-3.6 V and is well-suited to battery-powered instruments.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ512GL408T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ512GL408-I/PT | PIC24FJ512GL408-E/PT | PIC24FJ512GL406-I/PT |
|---|---|---|---|---|
| Package | 80-pin TQFP (12x12 mm) | 80-pin TQFP (12x12 mm) - same | 80-pin TQFP (12x12 mm) - same | 80-pin TQFP (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Flash Memory | 512 KB ECC dual-partition | 512 KB ECC dual-partition | 512 KB ECC dual-partition | 512 KB (different sub-bank layout) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB |
| Operating Temperature | -40 C to +85 C (I-grade) | -40 C to +85 C | -40 C to +125 C (E-grade) | -40 C to +85 C |
| USB | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Segment LCD | Up to 472 segments | Up to 472 segments | Up to 472 segments | Up to 472 segments (different COM allocation) |
| Supply 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 |
| Price (qty 1, as of 2026-09-30) | ~$9.20 | ~$9.50 (non-T/R, tray) | ~$11.20 (extended temp) | ~$8.40 |
Key Differentiators
- Dual-partition Flash enabling live OTA firmware updates (vs PIC24FJ256GL408-I/PT)
- Integrated USB 2.0 Full-Speed controller with on-chip PHY (vs PIC24FJ256GA110-I/PT)
- Up to 472 segment LCD drive without external driver (vs PIC24FJ256GB110-I/PT)
Design Notes
Estimated: at VDD=3.3V and CPU running 16 MIPS while USB active, the PIC24FJ512GL408T-I/PT typically draws ~25-40 mA. Place a 4.7uF bulk + 100nF decoupling capacitor pair within 5 mm of every VDD/VSS pin pair, and a separate 100nF near AVDD/AVSS for the analog domain. According to Microchip's datasheet, unused VDD pins must still be connected to the supply. Do not exceed 3.6V on VDD or the USB VBUS pin.
Use a 4-layer PCB with a continuous ground plane directly under the 80-TQFP footprint to minimize EMI and provide low-impedance return paths for USB and LCD signals. The exposed thermal pad (if your TQFP variant has one) must be soldered to the ground plane with thermal vias on a 1.2 mm pitch. According to Microchip's TQFP-80 land pattern reference, keep the USB D+/D- traces matched within 0.5 mm and 90 ohm differential impedance.
Do not enable the USB module without a stable 48 MHz USB clock sourced from the primary oscillator with PLL. According to Microchip's PIC24FJ GL4 family datasheet, the USB module cannot run from the internal 8 MHz oscillator alone. Also ensure the segment LCD bias is correctly configured for your glass - using 1/3 bias with 1/2 duty on a glass expecting 1/4 bias can cause ghost segments and contrast loss.
Route the LCD segment and common lines on a separate layer shielded from switching signals (USB, PWM) to avoid ghost segments and crosstalk. According to Microchip's LCD application notes, place a guard ground trace between SEG/COM lines and noisy digital lines. Keep trace lengths under 100 mm where possible and route them over a continuous ground reference to minimize EMI coupling into the LCD driver charge pump.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free reflow profile (JEDEC J-STD-020) supported. Not AEC-Q100 qualified - automotive applications require a -VA or -E automotive-qualified PIC24FJ variant.