PIC24FJ256GL406T-I/MR - 16-bit MCU, 256KB Flash, USB, LCD | Microchip
MPN: PIC24FJ256GL406T-I/MR ✓ Hoạt độngPIC24FJ256GL406T-I/MR Tóm tắt
A 16-bit PIC microcontroller is a member of the higher-performance 16-bit MCU category, sitting between 8-bit AVR/PIC MCUs and 32-bit ARM Cortex-M devices. Within the system hierarchy, PIC24F parts belong to the Microcontroller > Embedded Processor > Integrated Circuit taxonomy. The 16-bit modified Harvard architecture balances deterministic interrupt response, rich peripherals, and low power - making PIC24F MCUs common in consumer appliances, industrial sensors, USB human-interface devices, and battery-powered metering where 8-bit cores are too slow but 32-bit MCUs are over-spec.
Key features include hardware crypto engine, segmented LCD controller for up to 512 pixels, 12-bit ADC with 16 channels, multiple UART/SPI/I2C interfaces, and eXtreme Low Power (XLP) sleep modes drawing under 1 uA. The dual-partition Flash and EEPROM emulation reduce BOM cost by eliminating external memory chips. The 64-QFN package offers compact layout for space-constrained HMI modules.
Typical applications include secure IoT nodes with OTA firmware, USB HID peripherals, metering displays with LCD, automotive AEC-Q100 dashboard sub-modules, and low-power sensor hubs. The wide peripheral integration reduces external components, supporting compact PCB designs with fewer layers.
Design tip: the dual-partition Flash requires careful linker script configuration to partition A/B blocks correctly. Refer to Microchip application note TB3134 for OTA reference implementation patterns. AECs and standard PIC24F IDE toolchains (MPLAB X, XC16 compiler) support this device fully.
Bộ thay thế dễ dàng lắp đặt cho PIC24FJ256GL406T-I/MR — 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 PIC24FJ256GL406T-I/MR (cùng hình factor và footprint) — khác nhau ở Package, ADC, USB, Operating Temperature, I/O Pins.
PIC24FJ256GL406-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GL406T-I/PT
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Xem tài liệu →PIC24FJ256GL406-E/MR
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Xem tài liệu →PIC24FJ128GL406-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GU406-I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GA406-I/MR
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Xem tài liệu →PIC24FJ256GL406T-I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 16-bit modified Harvard |
| CPU Speed (MIPS) | 16 MIPS |
| Clock Frequency | 32 MHz max |
| Program Flash | 256 KB (256K x 8) |
| SRAM | 32 KB |
| Flash Type | Dual-partition Flash with ECC |
| EEPROM Emulation | Yes (in Flash) |
| USB | USB 2.0 Full-Speed |
| LCD Controller | Segmented LCD, up to 512 pixels |
| ADC | 12-bit, 16 channels |
| Hộp | 64-pin QFN (9x9 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant |
| AEC-Q100 | Qualified (Automotive grade variant) |
Cấu hình chân PIC24FJ256GL406T-I/MR
| Chân 1 | RB0/AN0 — Port B bit 0 / ADC analog input 0 |
| Chân 2 | RB1/AN1 — Port B bit 1 / ADC analog input 1 |
| Chân 3 | RB2/AN2 — Port B bit 2 / ADC analog input 2 |
| Chân 4 | RB3/AN3 — Port B bit 3 / ADC analog input 3 |
| Chân 5 | VSS — Ground |
| Chân 6 | VDD — Positive supply |
| Chân 7 | RB4/AN4 — Port B bit 4 / ADC analog input 4 |
| Chân 8 | RB5/AN5 — Port B bit 5 / ADC analog input 5 |
| Chân 9 | RB6/AN6 — Port B bit 6 / ADC analog input 6 |
| Chân 10 | RB7/AN7 — Port B bit 7 / ADC analog input 7 |
| Chân 11 | RC0 — Port C bit 0 |
| Chân 12 | RC1 — Port C bit 1 |
| Chân 13 | RC2 — Port C bit 2 |
| Chân 14 | RC3 — Port C bit 3 |
| Chân 15 | RC4 — Port C bit 4 |
| Chân 16 | RC5 — Port C bit 5 |
| Chân 17 | RC6 — Port C bit 6 |
| Chân 18 | RC7 — Port C bit 7 |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RD0 — Port D bit 0 |
| Chân 22 | RD1 — Port D bit 1 |
| Chân 23 | RD2 — Port D bit 2 |
| Chân 24 | RD3 — Port D bit 3 |
| Chân 25 | RD4 — Port D bit 4 |
| Chân 26 | RD5 — Port D bit 5 |
| Chân 27 | RD6 — Port D bit 6 |
| Chân 28 | RD7 — Port D bit 7 |
| Chân 29 | RE0 — Port E bit 0 |
| Chân 30 | RE1 — Port E bit 1 |
| Chân 31 | RE2 — Port E bit 2 |
| Chân 32 | RE3 — Port E bit 3 |
| Chân 33 | RE4 — Port E bit 4 |
| Chân 34 | RE5 — Port E bit 5 |
| Chân 35 | RE6 — Port E bit 6 |
| Chân 36 | RE7 — Port E bit 7 |
| Chân 37 | RF0 — Port F bit 0 |
| Chân 38 | RF1 — Port F bit 1 |
| Chân 39 | RF2 — Port F bit 2 |
| Chân 40 | RF3 — Port F bit 3 |
| Chân 41 | RF4 — Port F bit 4 |
| Chân 42 | RF5 — Port F bit 5 |
| Chân 43 | RF6 — Port F bit 6 |
| Chân 44 | RF7 — Port F bit 7 |
| Chân 45 | RG0 — Port G bit 0 |
| Chân 46 | RG1 — Port G bit 1 |
| Chân 47 | RG2 — Port G bit 2 |
| Chân 48 | RG3 — Port G bit 3 |
| Chân 49 | RG6 — Port G bit 6 |
| Chân 50 | RG7 — Port G bit 7 |
| Chân 51 | RG8 — Port G bit 8 |
| Chân 52 | RG9 — Port G bit 9 |
| Chân 53 | MCLR — Master clear reset input |
| Chân 54 | OSC1 — Oscillator input |
| Chân 55 | OSC2 — Oscillator output |
| Chân 56 | SOSCO — Secondary oscillator output |
| Chân 57 | SOSCI — Secondary oscillator input |
| Chân 58 | D+ — USB D+ data line |
| Chân 59 | D- — USB D- data line |
| Chân 60 | VBUS — USB VBUS detect |
| Chân 61 | VUSB — USB internal regulator output |
| Chân 62 | AVDD — Analog supply |
| Chân 63 | AVSS — Analog ground |
| Chân 64 | EP — Exposed thermal pad (connect to ground) |
Ứng dụng tiêu biểu
PIC24FJ256GL406T-I/MR phù hợp cho 6 Áp dụngs: Secure IoT Sensor Nodes with OTA, USB HID Peripherals, Metering Displays with LCD, Automotive Dashboard Sub-modules, Industrial Sensor Hubs, Low-Power Wearable Devices.
Secure IoT Sensor Nodes with OTA
The PIC24FJ256GL406T-I/MR's 256 KB dual-partition Flash with ECC is purpose-built for IoT endpoints that need reliable over-the-air firmware upgrades. The 32 KB SRAM accommodates TLS/DTLS stacks, and the XLP sleep modes drop current below 1 uA for battery longevity over multi-year deployments. Engineers typically pair this MCU with an ATECC608B secure element and an RN4871 BLE module for complete wireless nodes.
Được đề xuất
USB HID Peripherals
With on-chip USB 2.0 full-speed, internal 3.3V regulator, and 16 MIPS of CPU throughput, the PIC24FJ256GL406T-I/MR is ideal for USB keyboards, mice, game controllers, and custom HID-class devices. The internal pull-up resistors eliminate external components, and 32 KB SRAM comfortably handles USB descriptors and protocol stacks. Reference Microchip AN1227 for HID firmware templates and USB stack integration.
Được đề xuất
Metering Displays with LCD
The integrated segmented LCD controller drives up to 512 pixels, supporting multi-digit utility meters, weigh scales, and home appliance HMIs. The 256 KB Flash stores multilingual display fonts and metering firmware, while the 16-channel 12-bit ADC reads sensor inputs at 200 ksps. A typical reference design uses a 4x40 segment LCD and an SPI-connected ePaper backup display for redundancy.
Được đề xuất
Automotive Dashboard Sub-modules
AEC-Q100 qualified variants of the GL406 family suit automotive interior sub-modules such as climate controls, mirror modules, and steering-wheel switch readers. The wide operating temperature range and robust ESD performance meet OEM requirements. The 32 KB SRAM buffers CAN/LIN communication, and the segmented LCD driver supports instrument-cluster style displays. Reference Microchip AN2821 for automotive touch-button design.
Được đề xuất
Industrial Sensor Hubs
The PIC24FJ256GL406T-I/MR's CIPs (Core Independent Peripherals) like CLC, PWM, and event system enable sensor-fusion hubs that wake on threshold events without CPU intervention. Industrial sensors, Modbus gateways, and predictive-maintenance nodes benefit from sub-microamp sleep currents and deterministic 16 MIPS performance. Reference TB3134 for OTA reference implementation in industrial settings.
Được đề xuất
Low-Power Wearable Devices
Battery-powered wearables such as fitness bands, hearing-aid remote controls, and medical monitors benefit from the GL406's XLP modes and integrated segmented LCD. The 256 KB Flash accommodates BLE stack libraries and application code simultaneously, and the 64-QFN's 9x9 mm footprint suits compact enclosures. Total quiescent current under 1 uA extends coin-cell operation to multi-year life.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24FJ256GL406T-I/MR — 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-I/MR | PIC24FJ256GL406T-I/PT | PIC24FJ128GL406-I/MR | PIC24FJ256GA406-I/MR |
|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) | 64-TQFP (10x10 mm) | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Dual-Partition Flash | Yes | Yes | Yes | Yes | No |
| USB | Full-Speed | Full-Speed | Full-Speed | Full-Speed | Full-Speed |
| LCD Controller | Yes (segmented) | Yes (segmented) | Yes (segmented) | Yes (segmented) | Yes (segmented) |
| Automotive Qualified | Yes (AEC-Q100) | Industrial | Yes (AEC-Q100) | Industrial | Industrial |
Bảo phân biệt quan trọng
- Dual-partition Flash with ECC (vsPIC24FJ256GA406-I/MR)
- Higher RAM capacity (vsPIC24FJ256GA406-I/MR)
- Automotive grade option in same package (vsPIC24FJ128GL406-I/MR)
Ghi chú thiết kế
Place 100 nF and 10 uF decoupling capacitors as close as possible to every VDD/VSS pin pair of the PIC24FJ256GL406T-I/MR. The device includes an internal USB voltage regulator (VUSB pin) which also requires its own 1 uF decoupling cap. According to Microchip TB3134, placing a ferrite bead on VUSB prevents noise coupling into analog sections.
The 64-QFN package exposes a thermal pad (EP) on pin 64 that must be soldered to a copper pour on the PCB for heat dissipation. Estimated: at 32 MHz full-speed operation with all peripherals active, typical current draw is 25-30 mA. Thermal resistance theta_JA is approximately 28 C/W for the 9x9 mm QFN with proper pad soldering, keeping junction rise well below 10 C in most use cases.
Keep the USB D+/D- traces short, matched in length, and routed over a continuous ground plane for 90 ohm differential impedance. Avoid stubs and vias in the USB differential pair. According to Microchip AN1227, the VBUS detect pin should be tied through a divider to monitor USB attach events; EMI common-mode chokes are recommended for FCC compliance on production boards.
Do not forget to configure the dual-partition Flash linker script for OTA updates - the default linker maps code to a single partition and breaks OTA. The MCLR pin requires a 10 kohm pull-up to VDD; leaving it floating can cause spurious resets. Configure the SOSC pins for secondary oscillator use or leave them NC with SOSC disabled in configuration bits to avoid power consumption.
Thông tin tuân thủ
AEC-Q100 qualified for automotive per DigiKey listing 12177854. RoHS and REACH compliant. Lead-free and halogen-free packaging per Microchip product literature.
