PIC24FJ512GL408-I/PT - 512KB Flash 16-bit LCD MCU | Microchip
MPN: PIC24FJ512GL408-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.92 | $89.20 |
| 100 | $7.78 | $778.00 |
| 500 | $6.95 | $3,475.00 |
| 1,000 | $6.3 | $6,300.00 |
PIC24FJ512GL408-I/PT Overview
A 16-bit microcontroller (MCU) is a single-chip computer that uses a 16-bit data path, instruction word, and register file. Within the broader semiconductor taxonomy, it sits below 32-bit Cortex-M class devices but above 8-bit PIC16/AVR microcontrollers. The PIC24F architecture adds a hardware multiply/divide unit, a 16-element working register array, and native C-friendly addressing modes, making it a common upgrade path from legacy PIC18 designs in industrial, medical, and human-machine-interface (HMI) products.
Key features of the PIC24FJ512GL408 include 512 KB of dual-partition Flash that supports live Over-The-Air (OTA) firmware updates, 32 KB RAM, four Core Independent Peripherals (CIPs) such as CLC, MCCP and 16-bit PWM, a full-speed USB 2.0 device controller with internal transceiver, a segmented LCD driver (up to 296 segments), a 12-bit 500 ksps ADC, multiple UART/SPI/I2C peripherals, RTCC with calendar, and AEC-Q100 qualification for automotive-grade deployments.
The 'GL4' family uses a low-power design with multiple idle, sleep, and deep-sleep modes drawing microamp-level currents for battery-powered HMIs. Dual-partition Flash with live update enables a bootloader in one partition and an application in the other, so firmware can be swapped in the field without external memory or external supervisory logic.
Typical applications include industrial HMI panels with LCD, medical infusion pumps, e-meter and smart-meter front panels, automotive instrument clusters, IoT edge nodes with segmented displays, and consumer appliances with touch + LCD user interfaces. Designers select the GL408 for designs needing maximum Flash and an integrated LCD driver in a single chip.
When designing with this device, allocate the 12x12 mm TQFP-80 land pattern carefully and follow Microchip's analog and oscillator layout guidelines. Use the dedicated CVD touch and segmented-LCD bias network to minimize current draw and pin count, and refer to the PIC24FJ512GL408 datasheet for the full peripheral pin-select (PPS) mapping before finalizing PCB layout.
Drop-in alternatives for PIC24FJ512GL408-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 PIC24FJ512GL408-I/PT (same form factor and footprint) — differing in LCD Controller, Operating Temperature, ADC, Package, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ512GL408-E/PT
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →PIC24FJ256GL408-I/PT
✅ Drop-In✓ In Stock
$9.42 / Unit
View Datasheet →PIC24FJ128GL408-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ512GL406-I/PT
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC24FJ256GL408-E/PT
✅ Drop-In✓ In Stock
$4.62 / Unit
View Datasheet →PIC24FJ512GL408-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit) with MIPS16e ISA |
| Program Flash | 512 KB (512K x 8) ECC Flash |
| SRAM | 32 KB |
| Operating Frequency | 32 MHz (16 MIPS) internal |
| Supply Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| I/O Pins | 70 user I/O |
| Package | 80-pin TQFP (12x12 mm) |
| LCD Controller | Integrated segmented LCD driver |
| ADC | 12-bit A/D converter |
| USB | USB 2.0 Full-Speed Device with internal transceiver |
| Timers | Multiple 16-bit timer/capture/PWM channels |
| Communication | UART, SPI, I2C with PPS mapping |
| AEC-Q100 | Qualified (automotive grade) |
| Mounting Type | Surface Mount |
PIC24FJ512GL408-I/PT Pin Configuration
| Pin 1 | RG15 — I/O port |
| Pin 2 | RG0 — I/O port / LCD segment |
| Pin 3 | RG1 — I/O port / LCD segment |
| Pin 4 | RG2 — I/O port / LCD segment |
| Pin 5 | RG3 — I/O port / LCD segment |
| Pin 6 | RG4 — I/O port / LCD segment |
| Pin 7 | RG5 — I/O port / LCD segment |
| Pin 8 | RG6 — I/O port / LCD segment |
| Pin 9 | RG7 — I/O port / LCD segment |
| Pin 10 | RG8 — I/O port / LCD segment |
| Pin 11 | RG9 — I/O port / LCD segment |
| Pin 12 | RG10 — I/O port / LCD segment |
| Pin 13 | RG11 — I/O port / LCD segment |
| Pin 14 | RG12 — I/O port / LCD segment |
| Pin 15 | RG13 — I/O port / LCD segment |
| Pin 16 | RG14 — I/O port / LCD segment |
| Pin 17 | VDD — Supply voltage 2.0V to 3.6V |
| Pin 18 | RC12 — I/O port |
| Pin 19 | RC13 — I/O port |
| Pin 20 | RC14 — I/O port |
| Pin 21 | RC15 — I/O port |
| Pin 22 | VSS — Ground |
| Pin 23 | RD0 — I/O port |
| Pin 24 | RD1 — I/O port |
| Pin 25 | RD2 — I/O port |
| Pin 26 | RD3 — I/O port |
| Pin 27 | RD4 — I/O port |
| Pin 28 | RD5 — I/O port |
| Pin 29 | RD6 — I/O port |
| Pin 30 | RD7 — I/O port |
| Pin 31 | RD8 — I/O port |
| Pin 32 | RD9 — I/O port |
| Pin 33 | RD10 — I/O port |
| Pin 34 | RD11 — I/O port |
| Pin 35 | VSS — Ground |
| Pin 36 | RD12 — I/O port |
| Pin 37 | RD13 — I/O port |
| Pin 38 | RD14 — I/O port |
| Pin 39 | RD15 — I/O port |
| Pin 40 | RA0 — I/O port / analog input |
| Pin 41 | RA1 — I/O port / analog input |
| Pin 42 | RA2 — I/O port / analog input |
| Pin 43 | RA3 — I/O port / analog input |
| Pin 44 | RA4 — I/O port / analog input |
| Pin 45 | RA5 — I/O port / analog input |
| Pin 46 | RA6 — I/O port / analog input |
| Pin 47 | RA7 — I/O port / analog input |
| Pin 48 | VDD — Supply voltage 2.0V to 3.6V |
| Pin 49 | OSC1 — Crystal oscillator input |
| Pin 50 | OSC2 — Crystal oscillator output |
| Pin 51 | RB0 — I/O port / programming clock (PGEC1) |
| Pin 52 | RB1 — I/O port / programming data (PGED1) |
| Pin 53 | RB2 — I/O port |
| Pin 54 | RB3 — I/O port |
| Pin 55 | RB4 — I/O port |
| Pin 56 | RB5 — I/O port |
| Pin 57 | RB6 — I/O port / programming clock (PGEC2) |
| Pin 58 | RB7 — I/O port / programming data (PGED2) |
| Pin 59 | VSS — Ground |
| Pin 60 | RB8 — I/O port |
| Pin 61 | RB9 — I/O port |
| Pin 62 | RB10 — I/O port |
| Pin 63 | RB11 — I/O port |
| Pin 64 | RB12 — I/O port |
| Pin 65 | RB13 — I/O port |
| Pin 66 | RB14 — I/O port |
| Pin 67 | RB15 — I/O port |
| Pin 68 | VDD — Supply voltage 2.0V to 3.6V |
| Pin 69 | RC0 — I/O port |
| Pin 70 | RC1 — I/O port |
| Pin 71 | RC2 — I/O port |
| Pin 72 | RC3 — I/O port |
| Pin 73 | RC4 — I/O port |
| Pin 74 | RC5 — I/O port |
| Pin 75 | RC6 — I/O port |
| Pin 76 | RC7 — I/O port |
| Pin 77 | RC8 — I/O port |
| Pin 78 | RC9 — I/O port |
| Pin 79 | RC10 — I/O port |
| Pin 80 | RC11 — I/O port |
Typical Applications
PIC24FJ512GL408-I/PT is suitable for 6 applications: Industrial HMI Panel with Segmented LCD, Smart Meter / E-Meter Front Panel, Automotive Instrument Cluster, Medical Infusion Pump Controller, IoT Edge Sensor Node with LCD, Consumer Appliance User Interface.
Industrial HMI Panel with Segmented LCD
The PIC24FJ512GL408-I/PT is purpose-built for industrial HMI panels because it integrates a segmented LCD controller that drives up to 296 pixels without an external driver IC, eliminating BOM cost and PCB area. The 512 KB dual-partition Flash supports Over-The-Air firmware updates so the panel can be re-flashed in the field without service calls. Place the GL408 between the front-panel LCD glass and the user's keypad/touch inputs; its 12-bit ADC reads CVD touch sensors while multiple UART/SPI/I2C peripherals link to a host PLC.
Recommended
Smart Meter / E-Meter Front Panel
Smart electricity meters benefit from the PIC24FJ512GL408-I/PT's combination of low power (microamp sleep), large 512 KB Flash for metering protocol stacks (DLMS/COSEM, IEC 62056), and integrated segmented LCD that displays consumption, time-of-use tariffs, and error codes. The 32 KB SRAM buffers communication frames while the 32 MHz CPU handles encryption in real time. Run the meter from a 3.3V LDO fed by the meter's current transformer; the deep-sleep modes extend battery backup life during power outages.
Recommended
Automotive Instrument Cluster
The PIC24FJ512GL408-I/PT belongs to an AEC-Q100 qualified family, making it suitable for non-safety-critical instrument cluster nodes. The segmented LCD controller drives speed, RPM, fuel, and temperature gauges, while 70 user I/O connect to CAN/LIN transceivers, rotary encoders, and backlight drivers. Dual-partition Flash enables secure OTA firmware updates from the OEM cloud. Operate from the 12V battery through a 3.3V automotive-grade LDO and follow Microchip's automotive PCB layout guidelines for EMI immunity.
Recommended
Medical Infusion Pump Controller
Medical infusion pumps rely on the PIC24FJ512GL408-I/PT's deterministic 16 MIPS performance for closed-loop motor control, its 512 KB Flash for safety firmware and audit logging, and 32 KB SRAM for alarm buffering. The on-chip 12-bit ADC reads multiple pressure and flow sensors while the segmented LCD displays dose rate and remaining volume. Use the Core Independent Peripherals (CIPs) to offload PWM, capture, and CRC work from the CPU so the application code focuses on safety logic. Follow IEC 62304 development practices.
Recommended
IoT Edge Sensor Node with LCD
Battery-powered IoT edge nodes benefit from the PIC24FJ512GL408-I/PT's deep-sleep current in the microamp range plus its segmented LCD that displays sensor readings locally without needing an OLED. The 512 KB dual-partition Flash supports secure OTA firmware upgrades pushed from the cloud over Wi-Fi/BLE companion modules. USB 2.0 full-speed with internal transceiver eases factory provisioning and field firmware loading through a standard micro-USB port, eliminating the need for an external USB PHY.
Recommended
Consumer Appliance User Interface
Washing machines, dishwashers, ovens, and other consumer appliances use the PIC24FJ512GL408-I/PT to drive a multi-segment LCD display showing cycle progress, temperature, and fault codes, while 70 user I/O scan the keypad and capacitive-touch buttons. The 512 KB Flash stores localized UI strings for multiple languages and the appliance's cycle firmware, while 32 KB RAM buffers user inputs. Multiple UART/SPI/I2C peripherals link to motor-control and sensor front-end boards across the appliance chassis.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ512GL408-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ512GL408-E/PT | PIC24FJ256GL408-I/PT | PIC24FJ128GL408-I/PT | PIC24FJ512GL406-I/PT | PIC24FJ256GL408-E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-pin TQFP (12x12) | 80-pin TQFP (12x12) - same | 80-pin TQFP (12x12) - same | 80-pin TQFP (12x12) - same | 80-pin TQFP (12x12) - same | 80-pin TQFP (12x12) - same |
| Program Flash | 512 KB | 512 KB | 256 KB (-50%) | 128 KB (-75%) | 512 KB | 256 KB (-50%) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Supply Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| LCD Controller | Yes (up to 296 segments) | Yes (up to 296 segments) | Yes (up to 296 segments) | Yes (up to 296 segments) | Yes (reduced segment count) | Yes (up to 296 segments) |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device |
Key Differentiators
- Maximum Flash capacity in the GL408 family with industrial temperature range (vs PIC24FJ256GL408-I/PT)
- Extended temperature grade option available in same package (vs PIC24FJ512GL408-E/PT)
- Full 296-segment LCD controller (vs PIC24FJ512GL406-I/PT)
Design Notes
Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 3 mm of the pin pair, and add a bulk 10 uF tantalum or ceramic cap on the main 3.3V rail. The PIC24FJ512GL408-I/PT has multiple VDD pins (17, 48, 68); each must be decoupled separately to meet the +/- 50 mV noise budget required for clean ADC and LCD charge-pump operation.
Place the 32.768 kHz crystal and load capacitors within 5 mm of OSC1/OSC2 (pins 49/50), and route the traces over a continuous ground plane. Keep LCD segment traces short and shielded from switching I/O; route them away from the USB D+/D- differential pair (mapped via PPS) to avoid coupling. Follow Microchip's analog layout guidelines for the 12-bit ADC reference and signal traces.
Do not forget to configure the Peripheral Pin Select (PPS) registers before using UART, SPI, I2C, or USB - on the GL408 family most digital peripherals are remappable and default to disabled. Also remember that dual-partition Flash boot requires correct CONFIG3 settings to point at the active partition; misconfiguration bricks the OTA update path. Finally, observe the absolute maximum VDD of 3.6V - even brief transients above 3.6V can damage the part.
For USB 2.0 full-speed operation, route D+ and D- as a 90-ohm differential pair with matching length within 2 mm. Place the USB series resistors (per the datasheet) within 5 mm of the MCU pins and add a common-mode choke if the cable is longer than 1 m. Verify eye diagram compliance using a USB-IF certified test fixture during design validation.
Compliance Information
RoHS and REACH compliant per Microchip product page. GL4 family is AEC-Q100 qualified; -I/PT is industrial grade, -E/PT is extended temperature grade. Lead-free and halogen-free per Microchip material declarations.