PIC24FJ256GU406-I/MR - 16-Bit MCU 256KB Flash USB LCD 64-QFN | Microchip
MPN: PIC24FJ256GU406-I/MR ✓ Hoạt độngPIC24FJ256GU406-I/MR Tóm tắt
An MCU (microcontroller) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a range of analog and digital peripherals. Within the broader system hierarchy, the PIC24FJ belongs to the 16-bit microcontroller tier -> the PIC24F XLP subfamily -> eXtreme Low Power devices -> Microchip's embedded product portfolio. The 16-bit modified Harvard architecture delivers higher code density and arithmetic throughput than 8-bit AVR/PIC MCUs while retaining deterministic interrupt behaviour familiar to PIC users.
Key features of this part include Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), a 12-bit ADC with 500 ksps throughput, multiple UART/SPI/I2C peripherals, a Real-Time Clock and Calendar (RTCC) with backup battery domain, and an integrated segmented LCD driver supporting up to 480 segments. Hardware crypto acceleration (AES, DES, 3DES, SHA, MD5, HMAC) and a true random number generator (TRNG) make it suited to authenticated and secure IoT nodes.
Typical applications include battery-powered IoT sensor nodes with USB-C charging, BLE/Sub-GHz gateway controllers, secure medical monitoring devices, industrial HMI panels with segmented LCD readouts, low-power wireless instrumentation, and consumer devices requiring OTA firmware with the dual-partition flash guarantee. The 9x9 mm 64-QFN package supports dense PCB designs while still providing ample GPIO (54+ I/O pins) for peripheral expansion.
Designers should use Microchip's MPLAB X IDE with the XC16 compiler and configure the RTCC battery domain with an external coin cell to maintain timekeeping below 1 uA in deep sleep. For secure OTA, place the new image in the inactive partition, verify its signature against a public key stored in secure Flash, then atomically swap partitions on next boot.
Bộ thay thế dễ dàng lắp đặt cho PIC24FJ256GU406-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 PIC24FJ256GU406-I/MR (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, Operating Temperature, LCD Driver.
PIC24FJ256GU406-E/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GU405-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ128GU406-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GL406-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GB406T-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GA406-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GU406-I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | 16-bit PIC24F modified Harvard |
| CPU Frequency | 32 MHz (16 MIPS) |
| Program Flash (ECC) | 256 KB (128 KB ECC) |
| RAM | 32 KB |
| Dual-Partition Flash | Yes (live OTA support) |
| USB | USB 2.0 Full-Speed Device |
| LCD Controller | Segmented, up to 480 segments |
| Crypto Accelerator | AES, DES, 3DES, SHA, MD5, HMAC, TRNG |
| Operating Voltage | 2.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 64-QFN (MR) 9x9 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC24FJ256GU406-I/MR
| Chân 1 | RB0 — GPIO / programming clock |
| Chân 2 | RB1 — GPIO |
| Chân 3 | RB2 — GPIO |
| Chân 4 | RB3 — GPIO |
| Chân 5 | RB4 — GPIO |
| Chân 6 | RB5 — GPIO |
| Chân 7 | RB6 — GPIO / ICS PGC |
| Chân 8 | RB7 — GPIO / ICS PGD |
| Chân 9 | RB8 — GPIO |
| Chân 10 | RB9 — GPIO |
| Chân 11 | VSS — Ground |
| Chân 12 | VDD — Supply voltage |
| Chân 13 | RA0 — GPIO / LCD segment |
| Chân 14 | RA1 — GPIO / LCD segment |
| Chân 15 | RA2 — GPIO / LCD segment |
| Chân 16 | RA3 — GPIO / LCD segment |
| Chân 17 | RA4 — GPIO / LCD segment |
| Chân 18 | RA5 — GPIO / LCD segment |
| Chân 19 | RA6 — GPIO / LCD segment |
| Chân 20 | RA7 — GPIO / LCD segment |
| Chân 21 | RC0 — GPIO |
| Chân 22 | RC1 — GPIO |
| Chân 23 | RC2 — GPIO |
| Chân 24 | RC3 — GPIO |
| Chân 25 | RC4 — GPIO |
| Chân 26 | RC5 — GPIO |
| Chân 27 | RC6 — GPIO / UART TX |
| Chân 28 | RC7 — GPIO / UART RX |
| Chân 29 | RC8 — GPIO |
| Chân 30 | RC9 — GPIO |
| Chân 31 | VSS — Ground |
| Chân 32 | VDD — Supply voltage |
| Chân 33 | RD0 — GPIO / LCD segment |
| Chân 34 | RD1 — GPIO / LCD segment |
| Chân 35 | RD2 — GPIO / LCD segment |
| Chân 36 | RD3 — GPIO / LCD segment |
| Chân 37 | RD4 — GPIO / LCD segment |
| Chân 38 | RD5 — GPIO / LCD segment |
| Chân 39 | RD6 — GPIO / LCD segment |
| Chân 40 | RD7 — GPIO / LCD segment |
| Chân 41 | RD8 — GPIO / LCD segment |
| Chân 42 | RD9 — GPIO / LCD segment |
| Chân 43 | RD10 — GPIO / LCD segment |
| Chân 44 | RD11 — GPIO / LCD segment |
| Chân 45 | RE0 — GPIO / LCD segment |
| Chân 46 | RE1 — GPIO / LCD segment |
| Chân 47 | RE2 — GPIO / LCD segment |
| Chân 48 | RE3 — GPIO / LCD segment |
| Chân 49 | RE4 — GPIO / LCD segment |
| Chân 50 | RE5 — GPIO / LCD segment |
| Chân 51 | RE6 — GPIO / LCD segment |
| Chân 52 | RE7 — GPIO / LCD segment |
| Chân 53 | RF0 — GPIO |
| Chân 54 | RF1 — GPIO |
| Chân 55 | RF2 — GPIO |
| Chân 56 | RF3 — GPIO |
| Chân 57 | RF4 — GPIO |
| Chân 58 | RF5 — GPIO |
| Chân 59 | VUSB — USB 3.3V regulator output |
| Chân 60 | VBUS — USB VBUS sense input |
| Chân 61 | D+ — USB D+ data line |
| Chân 62 | D- — USB D- data line |
| Chân 63 | VBAT — RTCC backup battery domain |
| Chân 64 | EP — Exposed thermal pad (connect to ground) |
Ứng dụng tiêu biểu
PIC24FJ256GU406-I/MR phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Secure Medical Monitoring Device, Industrial HMI with Segmented LCD, USB-C Charging Smart Accessory, Low-Power Wireless Gateway Controller, Consumer Device with OTA Firmware.
Battery-Powered IoT Sensor Node
The PIC24FJ256GU406-I/MR fits IoT sensor nodes because its 16 MIPS core, integrated USB, hardware crypto engine, and dual-partition Flash deliver a complete connected platform in a single 9x9 mm QFN. The AES/SHA accelerator authenticates uplink packets and the TRNG supports secure key generation, while eXtreme Low Power (XLP) modes drop quiescent current to single-digit microamps, enabling multi-year coin-cell operation on remote environmental or asset-tracking sensors.
Được đề xuất
Secure Medical Monitoring Device
The PIC24FJ256GU406-I/MR is well suited to secure medical monitors because the hardware crypto block performs AES-128/256 encryption on patient data at line rate without burdening the 16 MIPS core. The segmented LCD controller drives a 480-segment glass readout directly, removing external display drivers, and dual-partition OTA allows safe in-field firmware updates that comply with FDA cyber-security guidance on medical device firmware integrity.
Được đề xuất
Industrial HMI with Segmented LCD
For industrial human-machine interfaces, the PIC24FJ256GU406-I/MR's integrated LCD controller drives up to 480 segments of segmented glass, eliminating external driver ICs and reducing BOM cost in panel meters, thermostat keypads, and weigh-scale displays. The Core Independent Peripherals (CLC, MCCP, 16-bit timers) handle keypad scanning, buzzer PWM, and encoder decoding in hardware, freeing the CPU to manage Modbus, CAN, or USB-HID communications.
Được đề xuất
USB-C Charging Smart Accessory
The PIC24FJ256GU406-I/MR simplifies USB-C smart accessories by integrating a full-speed USB 2.0 device controller plus the segmented LCD for real-time status display. The 32 KB RAM buffers USB descriptors and HID reports, while the 256 KB Flash stores OEM firmware and configuration profiles. XLP sleep currents below 5 uA allow battery-powered accessories to remain attached to USB for months without draining the host port.
Được đề xuất
Low-Power Wireless Gateway Controller
As a gateway controller, the PIC24FJ256GU406-I/MR bridges Sub-GHz or BLE peripherals to a wired USB host. The 32 MIPS class performance handles protocol translation between UART-attached radio modules and the USB stack, while the hardware AES block encrypts the wireless hop. The dual-partition Flash provides safe gateway firmware updates without bricking remote installations, a critical reliability feature for managed IoT fleets.
Được đề xuất
Consumer Device with OTA Firmware
The PIC24FJ256GU406-I/MR's dual-partition Flash architecture lets consumer products pull signed firmware images over USB or wireless and swap partitions on next reboot without bricking. Combined with the LCD driver, crypto accelerator, and 32 KB RAM, it is a single-chip solution for connected toys, smart-home remotes, and fitness wearables that demand secure field upgradability in a compact 9x9 mm footprint.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24FJ256GU406-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 | PIC24FJ256GU406-E/MR | PIC24FJ256GU405-I/PT | PIC24FJ128GU406-I/MR | PIC24FJ256GL406-I/MR | PIC24FJ256GB406T-I/MR | PIC24FJ256GA406-I/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (MR) 9x9 mm | 64-QFN (MR) 9x9 mm - same | 64-TQFP (PT) - different package code | 64-QFN (MR) 9x9 mm - same | 64-QFN (MR) 9x9 mm - same | 64-QFN (MR) 9x9 mm - same | 64-QFN (MR) 9x9 mm - same |
| Program Flash (ECC) | 256 KB (128 KB ECC) | 256 KB | 256 KB | 128 KB | 256 KB | 256 KB | 256 KB |
| Crypto Accelerator | AES/DES/SHA/HMAC/TRNG | AES/DES/SHA/HMAC/TRNG | AES/DES/SHA/HMAC/TRNG | No | |||
| Dual-Partition OTA Flash | Yes | Yes | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Integrated hardware crypto accelerator (vsPIC24FJ256GA406-I/MR)
- 256 KB Flash versus 128 KB on the lower-density sibling (vsPIC24FJ128GU406-I/MR)
- Same-package extended-temperature upgrade (vsPIC24FJ256GU406-E/MR)
Ghi chú thiết kế
The PIC24FJ256GU406-I/MR supports XLP deep-sleep modes with quiescent current in the single-digit microamp range. Configure unused peripherals off and gate the system clock via the OSCCON register before entering Sleep. Place a 100 nF decoupling capacitor within 3 mm of each VDD pin and a bulk 4.7 uF ceramic near the package exposed pad (EP). The EP must be soldered to the ground plane for thermal dissipation and electrical reference.
Route the USB D+ and D- lines as a 90-ohm differential pair with matched length, keeping them well away from switching nodes like the LCD charge pump. Place the 12 MHz external crystal (or resonator) within 5 mm of OSCI/OSCO with a grounded guard ring to minimize EMI into the USB bus. Per IPC-2221, the 64-QFN land pattern requires NSMD pads with a 1:1 pad-to-mask ratio for reliable rework.
Estimated: At 32 MHz full speed with all peripherals active, the core draws ~15 mA from 3.3 V. Power dissipation at peak (PD ~ 50 mW) is negligible for the 64-QFN but the EP must still be soldered. Do not omit the 1 uF VBAT capacitor - the RTCC loses timekeeping without it. Do not program the dual-partition swap bit until the new image's CRC and signature have been verified; otherwise a corrupted OTA image will brick the device.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (standard part); automotive designs should consider PIC24FJ256GU406-E/MR extended-temp variant.