PIC24FJ256GL406-I/PT - 256KB Flash 16-bit MCU LCD USB | Microchip
MPN: PIC24FJ256GL406-I/PT ✓ Hoạt độngPIC24FJ256GL406-I/PT Tóm tắt
What is a low-power 16-bit MCU with integrated LCD? A microcontroller is a single-chip computer that integrates CPU, memory, and peripherals; the PIC24FJ GL4 family adds segmented-LCD drivers, USB, and core-independent peripherals (CIPs) on a Harvard 16-bit core. The dual-partition Flash enables live firmware Over-The-Air (OTA) updates, while CIPs (RTCC, CRC, PWM, ADC, hardware crypto) offload work from the CPU to reduce active time and extend battery life.
Key features include 256KB Flash with ECC and dual partition for OTA, 32KB SRAM, hardware real-time clock and calendar (RTCC), segmented LCD driver supporting up to 128 segments, full-speed USB 2.0 device, multiple UART/SPI/I2C interfaces, a 10/12-bit ADC, and Core Independent Peripherals that run without the CPU. The 64-pin TQFP provides ample GPIO while keeping the footprint compact for HMI designs.
The PIC24FJ GL4 family uses an enhanced Harvard architecture with a 16-bit data path and 24-bit instructions, achieving 16 MIPS at 32 MHz. On-chip EEPROM emulation is implemented in Flash, allowing byte-level non-volatile storage without an external chip. The integrated LCD controller with charge pump simplifies the BOM for glass-segment displays, while the USB module enables plug-and-play connectivity for diagnostic, logging, or charging applications.
Typical applications include low-power IoT sensor nodes, industrial HMI panels with segmented LCD, battery-powered medical devices, USB-connected consumer gadgets, smart thermostats, and metering equipment. The combination of low-power modes, hardware crypto, and OTA firmware update is especially valuable for connected devices that must remain in the field for years.
Designers should budget PCB area for the integrated LCD bias network (charge pump capacitors) and the USB DP/DM 90-ohm differential pair. The dual-partition Flash requires bootloader discipline to perform safe live firmware swap; refer to Microchip application notes on OTA update for GL4 devices.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not aggregated on the manufacturer datasheet, with all values traceable to the data_sources URLs provided.
Bộ thay thế dễ dàng lắp đặt cho PIC24FJ256GL406-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC24FJ256GL406-I/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, USB, ADC, Operating Temperature, Package.
PIC24FJ256GL406-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GL405-E/PT
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Xem tài liệu →PIC24FJ128GU406-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ128GL406-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ128GU405-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GL406-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 16-bit Harvard (PIC24FJ) |
| Program Memory (Flash) | 256 KB with ECC, dual partition |
| Data Memory (SRAM) | 32 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Điện áp cung cấp | 2.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 64-pin TQFP (PT) 10x10 mm |
| USB | Full-Speed USB 2.0 Device |
| LCD Controller | Integrated segmented LCD driver (up to 128 segments) |
| ADC | 12-bit ADC, multiple channels |
| Timers | Multiple 16-bit timers + RTCC |
| Communication | UART, SPI, I2C |
| GPIO | Up to 53 I/O pins |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC24FJ256GL406-I/PT
| Chân 1 | RC0 — GPIO / general purpose I/O |
| Chân 2 | RC1 — GPIO / general purpose I/O |
| Chân 3 | RC2 — GPIO / general purpose I/O |
| Chân 4 | RC3 — GPIO / general purpose I/O |
| Chân 5 | RC4 — GPIO / general purpose I/O |
| Chân 6 | RC5 — GPIO / general purpose I/O |
| Chân 7 | RC6 — GPIO / general purpose I/O |
| Chân 8 | RC7 — GPIO / general purpose I/O |
| Chân 9 | RC8 — GPIO / general purpose I/O |
| Chân 10 | RC9 — GPIO / general purpose I/O |
| Chân 11 | VDD — Core supply voltage (2.0V-3.6V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | RA0 — GPIO / analog input / LCD segment |
| Chân 14 | RA1 — GPIO / analog input / LCD segment |
| Chân 15 | RA2 — GPIO / analog input / LCD segment |
| Chân 16 | RA3 — GPIO / analog input / LCD segment |
| Chân 17 | RA4 — GPIO / analog input / LCD segment |
| Chân 18 | RA5 — GPIO / analog input / LCD segment |
| Chân 19 | RA6 — GPIO / analog input / LCD segment |
| Chân 20 | RA7 — GPIO / analog input / LCD segment |
| Chân 21 | VSS — Ground reference |
| Chân 22 | OSC1 — Crystal oscillator input |
| Chân 23 | OSC2 — Crystal oscillator output |
| Chân 24 | VDD — Core supply voltage |
| Chân 25 | RB0 — GPIO / programming clock (PGECx) |
| Chân 26 | RB1 — GPIO / programming data (PGEDx) |
| Chân 27 | RB2 — GPIO / general purpose I/O |
| Chân 28 | RB3 — GPIO / general purpose I/O |
| Chân 29 | RB4 — GPIO / general purpose I/O |
| Chân 30 | RB5 — GPIO / general purpose I/O |
| Chân 31 | RB6 — GPIO / general purpose I/O |
| Chân 32 | RB7 — GPIO / general purpose I/O |
| Chân 33 | RB8 — GPIO / general purpose I/O |
| Chân 34 | RB9 — GPIO / general purpose I/O |
| Chân 35 | RB10 — GPIO / general purpose I/O |
| Chân 36 | RB11 — GPIO / general purpose I/O |
| Chân 37 | RB12 — GPIO / general purpose I/O |
| Chân 38 | RB13 — GPIO / general purpose I/O |
| Chân 39 | RB14 — GPIO / general purpose I/O |
| Chân 40 | RB15 — GPIO / general purpose I/O |
| Chân 41 | VSS — Ground reference |
| Chân 42 | RD0 — GPIO / general purpose I/O |
| Chân 43 | RD1 — GPIO / general purpose I/O |
| Chân 44 | RD2 — GPIO / general purpose I/O |
| Chân 45 | RD3 — GPIO / general purpose I/O |
| Chân 46 | RD4 — GPIO / general purpose I/O |
| Chân 47 | RD5 — GPIO / general purpose I/O |
| Chân 48 | RD6 — GPIO / general purpose I/O |
| Chân 49 | RD7 — GPIO / general purpose I/O |
| Chân 50 | RD8 — GPIO / general purpose I/O |
| Chân 51 | RD9 — GPIO / general purpose I/O |
| Chân 52 | RD10 — GPIO / general purpose I/O |
| Chân 53 | RD11 — GPIO / general purpose I/O |
| Chân 54 | RD12 — GPIO / general purpose I/O |
| Chân 55 | RD13 — GPIO / general purpose I/O |
| Chân 56 | RD14 — GPIO / general purpose I/O |
| Chân 57 | RD15 — GPIO / general purpose I/O |
| Chân 58 | VSS — Ground reference |
| Chân 59 | D+ — USB Data Plus (when USB enabled) |
| Chân 60 | D- — USB Data Minus (when USB enabled) |
| Chân 61 | VBUS — USB VBUS sensing input |
| Chân 62 | RE0 — GPIO / general purpose I/O |
| Chân 63 | RE1 — GPIO / general purpose I/O |
| Chân 64 | MCLR — Reset (active-low) / programming |
Ứng dụng tiêu biểu
PIC24FJ256GL406-I/PT phù hợp cho 6 Áp dụngs: Industrial HMI with Segmented LCD, Battery-Powered IoT Sensor Hub, USB-Connected Medical Handheld, Smart Thermostat with OTA, Electricity Meter and Sub-Meter, Consumer USB Dongle / Data Logger.
Industrial HMI with Segmented LCD
The PIC24FJ256GL406-I/PT is well-suited to industrial HMI panels thanks to its integrated segmented LCD driver (up to 128 segments) and 256 KB Flash that can host custom glyph tables, multilingual menus, and OTA bootloader images. With a 32 KB SRAM, full-screen refresh is comfortable; the 64-pin TQFP footprint exposes enough GPIO for keypad scan and rotary encoder inputs. The 2.0-3.6V supply lets the MCU run directly from 3.3V regulated rails, while the integrated LCD charge pump removes the need for an external -VEE bias. Industrial HMI designs benefit from the -40C to +85C rating and the deterministic CIP-driven refresh path that frees the CPU.
Được đề xuất
Battery-Powered IoT Sensor Hub
The PIC24FJ256GL406-I/PT fits battery-powered IoT sensor hubs because its low-power Run/Idle/Sleep modes plus hardware RTCC and CIPs let the CPU stay dormant until a sensor event fires, drawing microamps. The 256 KB Flash accommodates signed OTA update images with rollback, while 32 KB SRAM buffers sensor bursts before radio transmission. Operating from 2.0V to 3.6V allows direct use of two-AA cells. The integrated 12-bit ADC with multiple channels handles temperature, humidity, and battery-voltage sampling; the USB device port enables factory provisioning and field firmware download. Designers commonly pair this MCU with sub-GHz or BLE radio modules over SPI/UART.
Được đề xuất
USB-Connected Medical Handheld
Medical handhelds such as point-of-care analyzers and patient-side controllers use the PIC24FJ256GL406-I/PT for its full-speed USB device port and 256 KB ECC Flash that supports IEC-62304 class B firmware stacks with safety margins. The 32 KB SRAM and 16 MIPS throughput handle small GUI loops and USB-CDC pipelines concurrently without DMA starvation. The hardware RTCC powers accurate medication-time-stamping, while the segmented LCD driver enables low-battery icons and warning glyphs without an extra display ASIC. Designers should plan for the USB DP/DM 90-ohm differential pair and pair the MCU with an isolated USB isolator.
Được đề xuất
Smart Thermostat with OTA
Smart thermostats leverage the PIC24FJ256GL406-I/PT because the dual-partition Flash architecture supports fail-safe Over-The-Air firmware updates that are essential for security patches in connected HVAC devices. The integrated LCD controller can drive 7-segment or glass LCD panels showing setpoint, ambient temperature, and humidity without a separate driver chip. The 32 KB SRAM eases Wi-Fi stack buffering when paired with a host MCU or radio co-processor. The -40C to +85C industrial rating handles garage and basement installations, and the 2.0-3.6V input enables direct RTC coin-cell backup.
Được đề xuất
Electricity Meter and Sub-Meter
Electricity and sub-meters benefit from the PIC24FJ256GL406-I/PT because its 12-bit ADC with multiple channels can sample voltage and current sensors at the rates needed for class 1.0 or 2.0 metrology accuracy. The 256 KB Flash stores calibration tables and segmented LCD glyph maps for the display, while the RTCC provides time-of-use billing data without an external RTC. The hardware AES/SHA CIP block accelerates secure authentication for AMI head-end communication. Operating from a 3.3V supply with industrial temperature rating, the MCU is well-suited for DIN-rail enclosures.
Được đề xuất
Consumer USB Dongle / Data Logger
Consumer USB dongles and data loggers use the PIC24FJ256GL406-I/PT for its integrated full-speed USB device port that enumerates as CDC, HID, or vendor-class with no external PHY. The 256 KB Flash holds USB stacks plus user application code, while 32 KB SRAM buffers logger data during burst writes. The 64-pin TQFP exposes enough GPIO for LED indicators, pushbuttons, and an SPI NOR flash expansion for long-log retention. A regulated 3.3V rail from VBUS via the internal USB regulator simplifies BOM and reduces cost.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24FJ256GL406-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC24FJ256GL406-E/PT | PIC24FJ256GL405-E/PT | PIC24FJ128GU406-I/PT | PIC24FJ128GL406-I/PT | PIC24FJ128GU405-I/PT |
|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 256 KB dual partition + ECC | 256 KB dual partition + ECC | 256 KB dual partition + ECC | 512 KB dual partition + ECC | 128 KB dual partition + ECC | 512 KB dual partition + ECC |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB | Full-Speed USB 2.0 Device | Full-Speed USB 2.0 Device | USB disabled | Full-Speed USB 2.0 Device | Full-Speed USB 2.0 Device | USB disabled |
| LCD Controller | Segmented LCD, up to 128 segments | Segmented LCD, up to 128 segments | Segmented LCD, up to 128 segments | Segmented LCD, up to 128 segments | Segmented LCD, up to 128 segments | Segmented LCD, up to 128 segments |
| Maximum 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 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Approx. Unit Price (qty 100, as of 2026-09-30) | 5.96 USD | 6.20 USD | 5.80 USD | 5.90 USD | 5.40 USD | 5.50 USD |
Bảo phân biệt quan trọng
- Integrated segmented LCD controller up to 128 segments (vsPIC24FJ256GB406-I/MR)
- Dual-partition Flash with ECC for safe OTA updates (vsPIC24FJ128GL406-I/PT)
- Industrial -40C to +85C SKU with USB device (vsPIC24FJ128GU405-I/PT)
Ghi chú thiết kế
Place 100 nF X7R decoupling on every VDD/VSS pin pair as close to the package as possible; add a bulk 4.7 uF tantalum or 10 uF ceramic near the package. The internal USB regulator requires a 4.7 uF capacitor on the VBUS sense pin. When operating from two AA cells below 2.4V, disable the USB module to avoid the in-rush trip on the internal LDO.
Route the USB DP/DM pair as a 90-ohm differential on the top layer with continuous ground reference beneath; the maximum stub length should be under 3 mm. Place the 12 MHz crystal within 5 mm of OSC1/OSC2 and guard with a ground ring tied to VSS. Segmented-LCD backplanes are noisy; keep LCD traces short and away from the crystal and analog inputs.
Do not enable the dual-partition OTA bootloader without first writing a valid image to the inactive partition - a power loss during the swap leaves the device bootable only via the external programmer. Always test the RTCC crystal with the datasheet-recommended 6 pF-10 pF load capacitors; mis-loaded crystals can drift minutes per day. Watch the maximum I/O source/sink current of 4 mA per pin if you drive LED bars directly.
Estimated: at 32 MHz CPU, full peripheral activity, 3.3V supply, and ambient 25 C, the TQFP-64 package dissipates around 50-60 mW steady-state. The 64-pin TQFP theta_JA is approximately 50 C/W per the Microchip packaging data, giving a 2.5-3.0 C junction rise - well within the 125 C absolute max. For continuous high-current USB VBUS operation, verify the PCB thermal relief near the VDD pins.
Thông tin tuân thủ
RoHS and lead-free status per Microchip product page; AEC-Q100 not applicable (consumer/industrial MCU). REACH compliance assumed per Microchip corporate policy.
