PIC24FJ256GB110T-I/PF - 256KB Flash USB MCU 100-TQFP | Microchip
MPN： PIC24FJ256GB110T-I/PF ✓ 啟用中PIC24FJ256GB110T-I/PF 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable peripherals. The PIC24FJ256GB110 family targets General Purpose USB Microcontroller applications, which require more than an 8-bit platform but do not need the horsepower of a full digital signal processor. By integrating a high-performance 16-bit core with full-speed USB-OTG, multiple serial interfaces (3x I2C, 3x SPI, 4x UART), and 23 independent timers, this family sits within the broader semiconductor hierarchy of microcontrollers -> embedded processors -> integrated circuits.
Key features include a 17-bit single-cycle hardware multiplier, a 16-bit hardware divider, a 16-bit working register array, C compiler-optimized architecture, and an 8MHz internal oscillator with a 4x PLL option and multiple divide options. Modified Harvard architecture and instruction set optimize for low power (<100 nA standby current) and high code density, while 16KB of RAM supports buffering for USB stacks and large data tables.
Typical applications include low-power USB peripherals, industrial control systems, data loggers, multi-serial-interface hubs, and consumer electronics requiring on-the-go USB connectivity. The combination of USB-OTG, large memory, and rich peripherals enables designers to consolidate separate MCU plus USB controller architectures into a single chip.
When designing with this part, ensure the PCB layout places the 100-pin TQFP decoupling capacitors within a few millimeters of the VDD/VSS pairs and route the USB DP/DM traces as a 90-ohm differential pair. Verify that the crystal/oscillator traces are short and guarded to minimize jitter on the system clock.
This page synthesizes distributor pricing, drop-in alternatives from the PIC24F family, and practical design notes not found in the manufacturer datasheet alone. Pricing references use DigiKey and LCSC data as of 2026-09-30.
直接替換替代品，適用於 PIC24FJ256GB110T-I/PF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC24FJ256GB110T-I/PF （相同外形與佔位） — 差異在於 Package, Standby Current, Timers, Operating Temperature, USB Interface.
PIC24FJ256GB110-I/PF
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ192GB110T-I/PF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ256GB110-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ256GA110T-I/PF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ192GB110-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ256GB108-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ256GB110T-I/PF 最大額定值與電氣特性
| Core | PIC24F (16-bit, Modified Harvard) |
| CPU Speed | 32 MHz / 16 MIPS |
| Program Flash Memory | 256 KB (85.5K x 24 words) |
| RAM | 16 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| USB Interface | USB 2.0 Full-Speed On-The-Go (OTG) |
| I2C | 3 |
| SPI | 3 |
| UART | 4 |
| Timers | 23 independent timers |
| Hardware Multiplier | 17-bit single-cycle |
| Hardware Divider | 16-bit |
| Internal Oscillator | 8 MHz with 4x PLL and multiple divide options |
| Standby Current | <100 nA |
| 工作溫度 | -40 C to +85 C (Industrial) |
| 封裝 | 100-pin TQFP (PF), 14x14 mm |
| 安裝類型 | Surface Mount |
| MSL 等級 | MSL 3 (per Microchip packaging) |
| Lead-Free / RoHS | Lead-free, RoHS compliant (per Microchip product page) |
| Architecture | Modified Harvard, C-compiler optimized |
PIC24FJ256GB110T-I/PF 100-pin tqfp (pf), 14x14 mm 腳位配置指南
PIC24FJ256GB110T-I/PF（100-pin tqfp (pf), 14x14 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC24FJ256GB110T-I/PF.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC24FJ256GB110T-I/PF 適用於 7 應用s: USB Human Interface Devices (HID), Industrial USB Data Loggers, USB-to-Serial Bridge / Multi-Protocol Hub, Medical Device Connectivity Modules, Consumer Audio / MIDI USB Devices, IoT Edge Nodes with USB Debug Port, Portable USB Battery Chargers / Power Bank Controllers.
USB Human Interface Devices (HID)
The PIC24FJ256GB110T-I/PF integrates a USB 2.0 Full-Speed On-The-Go transceiver and controller directly on-chip, which makes it ideal for HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its 256KB of program Flash and 16KB of RAM provide ample headroom for full USB stacks (including HID class drivers and report descriptors) plus application firmware. The 16 MIPS CPU performance at 32MHz ensures responsive HID polling intervals even when the device performs additional housekeeping tasks. Unlike discrete MCU-plus-USB-controller designs, this single-chip integration reduces BOM cost, PCB area, and BOM risk. Place 27-ohm source-match resistors close to the DP/DM pins and route as a 90-ohm differential pair for USB-IF compliance.
推薦
Industrial USB Data Loggers
The PIC24FJ256GB110T-I/PF is well suited for industrial USB data loggers because of its 256KB Flash for storing calibration tables and protocol stacks, 16KB RAM for buffering sensor reads before USB transfer, and industrial -40C to +85C operating range. The 4 UARTs, 3 SPI, and 3 I2C ports allow simultaneous connection to multiple sensors, GPS modules, or RS-485 transceivers. With <100 nA standby current, the device can be USB-bus-powered while spending most of its time in sleep mode, waking periodically to log. Industrial designers should add TVS protection on USB VBUS lines and use the wide 2.0-3.6V VDD range to support Li-ion battery backup. The 100-pin TQFP provides enough I/O for parallel ADC sampling if higher channel counts are required.
推薦
USB-to-Serial Bridge / Multi-Protocol Hub
With 4 UARTs, 3 SPI ports, and 3 I2C buses, the PIC24FJ256GB110T-I/PF can act as a USB-to-multi-protocol bridge that exposes several industrial buses to a host PC. Engineers commonly use this topology for factory automation gateways that need to talk to legacy RS-485 sensors, SPI flash chips, and I2C-based RTCs simultaneously. The integrated USB-OTG means the device can also act as a USB host to USB peripherals when configured appropriately. The 256KB Flash comfortably hosts the USB CDC/ACM class driver plus protocol translation logic, while 16KB RAM accommodates USB endpoint buffers and intermediate protocol frames. The 100-pin TQFP exposes all required peripheral pins without pin-sharing conflicts.
推薦
Medical Device Connectivity Modules
Medical connectivity devices, including USB patient monitors, point-of-care diagnostic readers, and handheld ultrasound probes, benefit from the PIC24FJ256GB110T-I/PF combination of USB-OTG, large memory, and rich peripherals. The 256KB Flash and 16KB RAM are sufficient for USB class drivers, light-weight RTOS kernels, and on-board data buffers, while 23 independent timers support precise sampling and USB frame timing. Industrial temperature range and <100 nA standby current make the part attractive for battery-powered ambulatory monitors. Designers should add galvanic isolation on USB and follow IEC 60601-1 EMI/ESD practices; the part itself is not pre-qualified for medical safety standards.
推薦
Consumer Audio / MIDI USB Devices
USB audio class devices, MIDI controllers, and DJ controllers benefit from the PIC24FJ256GB110T-I/PF full-speed USB-OTG, large memory footprint, and 16 MIPS CPU performance. The 256KB Flash holds the USB audio class driver, MIDI streaming logic, and user-customizable firmware, while 16KB RAM provides sufficient buffer space for streaming endpoints. The 4 UARTs and 3 SPIs allow expansion to external audio codecs or DSP co-processors. The 100-pin TQFP exposes enough I/O for button matrices, encoder inputs, and LED driving without multiplexing. Place a ferrite bead on USB VBUS to suppress bus noise, and use the internal 8MHz oscillator with 4x PLL to minimize BOM cost.
推薦
IoT Edge Nodes with USB Debug Port
IoT edge nodes that use USB only for firmware updates, configuration, or diagnostic logging can leverage the PIC24FJ256GB110T-I/PF USB-OTG as a wired maintenance interface while using the rich serial peripherals (4 UART, 3 SPI, 3 I2C) for sensor and radio connections. The <100 nA standby current is suitable for battery-powered sensors that wake periodically to transmit data. The 256KB Flash supports over-the-air firmware update staging areas, while 16KB RAM buffers incoming sensor data before bulk USB transfer. The 100-pin TQFP provides expansion headroom for analog inputs, PWM channels, and external interrupts. Use the internal 8MHz oscillator plus PLL to free the crystal pins for GPIO or peripheral use.
推薦
Portable USB Battery Chargers / Power Bank Controllers
Battery chargers and power-bank controllers benefit from the PIC24FJ256GB110T-I/PF USB-OTG for negotiating charge profiles with connected devices while using internal ADCs (via analog-capable pins on the 100-pin TQFP) to monitor battery voltage and current. The <100 nA standby current extends shelf life when no device is connected, and the 2.0-3.6V operating range directly supports single-cell Li-ion battery packs. The 256KB Flash stores lookup tables for charge profiles and graphical UI code. Designers should add reverse-polarity and over-current protection external to the MCU; the PIC24FJ256GB110T-I/PF handles USB negotiation and PWM control of switching elements but does not include integrated power FETs.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ256GB110T-I/PF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC24FJ256GB110-I/PF | PIC24FJ192GB110T-I/PF | PIC24FJ256GB110-I/PT | PIC24FJ256GA110T-I/PF | PIC24FJ192GB110-I/PT | PIC24FJ256GB108-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (PF), 14x14 mm | 100-pin TQFP (PF), 14x14 mm - same | 100-pin TQFP (PF), 14x14 mm - same | 100-pin TQFP (PT), 12x12 mm - same footprint family | 100-pin TQFP (PF), 14x14 mm - same | 100-pin TQFP (PT), 12x12 mm - same footprint family | 80-pin TQFP (PT), 12x12 mm - smaller package |
| Program Flash | 256 KB | 256 KB | 192 KB (-25%) | 256 KB | 256 KB | 192 KB (-25%) | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| USB Interface | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | No USB | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| 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 | 32 MHz / 16 MIPS |
| Packaging Format | Tape & Reel (T-suffix) | Tray (non-T) | Tape & Reel | Tray (non-T) | Tape & Reel | Tray (non-T) | Tray (non-T) |
主要差異化特點
- Integrated USB 2.0 Full-Speed OTG on-chip (對比PIC24FJ256GA110T-I/PF)
- 256KB Flash for full USB stack plus application code (對比PIC24FJ192GB110T-I/PF)
- Tape-and-reel packaging format for production (對比PIC24FJ256GB110-I/PF)
- Rich multi-protocol connectivity (4x UART + 3x SPI + 3x I2C) (對比PIC24FJ128GB110-I/PF)
設計說明
Estimated: at 32MHz CPU + active USB + 4 UARTs streaming, total active current typically draws ~30-50 mA from VDD. The 2.0-3.6V VDD range supports direct Li-ion battery connection. Place a 10uF bulk + 100nF decoupling capacitor pair within 3 mm of every VDD/VSS pin pair; the 100-pin TQFP exposes multiple VDD/VSS pins that must each be decoupled. For USB-bus-powered designs, add a 4.7uF bulk capacitor on VBUS and a ferrite bead for EMI suppression.
Route the USB DP and DM traces as a 90-ohm differential pair with matched length to within 150 mil, and keep the pair over a continuous ground plane. Place the 27-ohm source-match resistors (R1/R2) close to the MCU's DP/DM pins. Avoid routing USB traces near switching nodes or clock traces to minimize radiated emissions. The 100-pin TQFP land pattern should follow Microchip's recommended IPC-7351 nominal footprint with 0.5 mm pitch.
Do not exceed 3.6V on VDD or 5V tolerant pins; the PIC24FJ256GB110T-I/PF is not a 5V-tolerant part on most digital I/O. Do not assume the T-suffix variant is electrically different from the non-T variant - it is identical silicon with only the packaging format differing. Do not enable the internal 8MHz oscillator PLL beyond the datasheet-specified 4x multiplication without verifying USB Full-Speed timing accuracy. Configure all unused pins as digital outputs tied low to minimize current draw.
The 32MHz system clock generates harmonics up to several hundred MHz; route the crystal/oscillator traces short and surround them with a ground guard ring. For USB Full-Speed signaling at 12 Mbps, the DP/DM rise time must be within 4-20 ns per USB 2.0 spec - use the recommended 27-ohm resistors and a 15 pF capacitor on each data line if PCB trace capacitance is high. Validate signal integrity with a USB protocol analyzer or eye-pattern measurement.
Place the MCU near the USB connector to keep DP/DM traces short (<25 mm). Provide test points on VBUS, DP, DM, and VDD for in-circuit debug. Separate analog ground (AGND) and digital ground (DGND) planes if using the on-chip ADC, joining them at a single point near the MCU's GND pin. Thermal dissipation is not a concern at this power level, but copper pour on the GND pad improves EMI performance.
合規資訊
Lead-free and RoHS compliant per Microchip product page. DRC Conflict-Free per Abacus Technologies listing. Halogen-free status not explicitly stated in provided web data; flagged as unknown. Not AEC-Q100 qualified (industrial temp grade only).