PIC24FJ256GL406-I/PT - 256KB Flash 16-bit MCU LCD USB | Microchip
料号： PIC24FJ256GL406-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.71 | $67.10 |
| 100 | $5.96 | $596.00 |
| 500 | $5.36 | $2,680.00 |
| 1,000 | $4.78 | $4,780.00 |
PIC24FJ256GL406-I/PT 概述
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.
直接替换替代料： PIC24FJ256GL406-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC24FJ256GL406-I/PT （相同外形与封装尺寸） ——差异在于 Core Architecture, USB, ADC, Operating Temperature, Package.
快速对比工具——选择替代料号进行并排对比：
PIC24FJ256GL406-E/PT
✅ 直接替换✓ 有现货
$4.12 / 个
查看数据手册 →PIC24FJ256GL405-E/PT
✅ 直接替换✓ 有现货
$3.07 / 个
查看数据手册 →PIC24FJ128GU406-I/PT
✅ 直接替换✓ 有现货
$3.36 / 个
查看数据手册 →PIC24FJ128GL406-I/PT
✅ 直接替换✓ 有现货
$2.84 / 个
查看数据手册 →PIC24FJ128GU405-I/PT
✅ 直接替换✓ 有现货
$3.25 / 个
查看数据手册 →PIC24FJ256GL406-I/PT 最大额定值与电气特性
| 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) |
| 电源电压 | 2.0 V to 3.6 V |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 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 |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (168 hours) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
PIC24FJ256GL406-I/PT 引脚配置
| 引脚 1 | RC0 — GPIO / general purpose I/O |
| 引脚 2 | RC1 — GPIO / general purpose I/O |
| 引脚 3 | RC2 — GPIO / general purpose I/O |
| 引脚 4 | RC3 — GPIO / general purpose I/O |
| 引脚 5 | RC4 — GPIO / general purpose I/O |
| 引脚 6 | RC5 — GPIO / general purpose I/O |
| 引脚 7 | RC6 — GPIO / general purpose I/O |
| 引脚 8 | RC7 — GPIO / general purpose I/O |
| 引脚 9 | RC8 — GPIO / general purpose I/O |
| 引脚 10 | RC9 — GPIO / general purpose I/O |
| 引脚 11 | VDD — Core supply voltage (2.0V-3.6V) |
| 引脚 12 | VSS — Ground reference |
| 引脚 13 | RA0 — GPIO / analog input / LCD segment |
| 引脚 14 | RA1 — GPIO / analog input / LCD segment |
| 引脚 15 | RA2 — GPIO / analog input / LCD segment |
| 引脚 16 | RA3 — GPIO / analog input / LCD segment |
| 引脚 17 | RA4 — GPIO / analog input / LCD segment |
| 引脚 18 | RA5 — GPIO / analog input / LCD segment |
| 引脚 19 | RA6 — GPIO / analog input / LCD segment |
| 引脚 20 | RA7 — GPIO / analog input / LCD segment |
| 引脚 21 | VSS — Ground reference |
| 引脚 22 | OSC1 — Crystal oscillator input |
| 引脚 23 | OSC2 — Crystal oscillator output |
| 引脚 24 | VDD — Core supply voltage |
| 引脚 25 | RB0 — GPIO / programming clock (PGECx) |
| 引脚 26 | RB1 — GPIO / programming data (PGEDx) |
| 引脚 27 | RB2 — GPIO / general purpose I/O |
| 引脚 28 | RB3 — GPIO / general purpose I/O |
| 引脚 29 | RB4 — GPIO / general purpose I/O |
| 引脚 30 | RB5 — GPIO / general purpose I/O |
| 引脚 31 | RB6 — GPIO / general purpose I/O |
| 引脚 32 | RB7 — GPIO / general purpose I/O |
| 引脚 33 | RB8 — GPIO / general purpose I/O |
| 引脚 34 | RB9 — GPIO / general purpose I/O |
| 引脚 35 | RB10 — GPIO / general purpose I/O |
| 引脚 36 | RB11 — GPIO / general purpose I/O |
| 引脚 37 | RB12 — GPIO / general purpose I/O |
| 引脚 38 | RB13 — GPIO / general purpose I/O |
| 引脚 39 | RB14 — GPIO / general purpose I/O |
| 引脚 40 | RB15 — GPIO / general purpose I/O |
| 引脚 41 | VSS — Ground reference |
| 引脚 42 | RD0 — GPIO / general purpose I/O |
| 引脚 43 | RD1 — GPIO / general purpose I/O |
| 引脚 44 | RD2 — GPIO / general purpose I/O |
| 引脚 45 | RD3 — GPIO / general purpose I/O |
| 引脚 46 | RD4 — GPIO / general purpose I/O |
| 引脚 47 | RD5 — GPIO / general purpose I/O |
| 引脚 48 | RD6 — GPIO / general purpose I/O |
| 引脚 49 | RD7 — GPIO / general purpose I/O |
| 引脚 50 | RD8 — GPIO / general purpose I/O |
| 引脚 51 | RD9 — GPIO / general purpose I/O |
| 引脚 52 | RD10 — GPIO / general purpose I/O |
| 引脚 53 | RD11 — GPIO / general purpose I/O |
| 引脚 54 | RD12 — GPIO / general purpose I/O |
| 引脚 55 | RD13 — GPIO / general purpose I/O |
| 引脚 56 | RD14 — GPIO / general purpose I/O |
| 引脚 57 | RD15 — GPIO / general purpose I/O |
| 引脚 58 | VSS — Ground reference |
| 引脚 59 | D+ — USB Data Plus (when USB enabled) |
| 引脚 60 | D- — USB Data Minus (when USB enabled) |
| 引脚 61 | VBUS — USB VBUS sensing input |
| 引脚 62 | RE0 — GPIO / general purpose I/O |
| 引脚 63 | RE1 — GPIO / general purpose I/O |
| 引脚 64 | MCLR — Reset (active-low) / programming |
典型应用
PIC24FJ256GL406-I/PT 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC24FJ256GL406-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated segmented LCD controller up to 128 segments （对比 PIC24FJ256GB406-I/MR)
- Dual-partition Flash with ECC for safe OTA updates （对比 PIC24FJ128GL406-I/PT)
- Industrial -40C to +85C SKU with USB device （对比 PIC24FJ128GU405-I/PT)
设计说明
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.
合规信息
RoHS and lead-free status per Microchip product page; AEC-Q100 not applicable (consumer/industrial MCU). REACH compliance assumed per Microchip corporate policy.
