PIC24FJ64GB108T-I/PT - 64KB Flash USB MCU 80-TQFP | Microchip
料号： PIC24FJ64GB108T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.82 | $7.82 |
| 10 | $7.1 | $71.00 |
| 100 | $6.32 | $632.00 |
| 500 | $5.55 | $2,775.00 |
| 1,000 | $4.92 | $4,920.00 |
PIC24FJ64GB108T-I/PT 概述
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (typically Flash), data memory (RAM), and a rich set of peripherals such as timers, communication interfaces, ADC/DAC modules, and I/O. The PIC24F sits in Microchip's 16-bit MCU hierarchy: PIC24F (low-power, Flash) -> PIC24 (16-bit) -> MCU -> microcontroller -> embedded system-on-chip. This hierarchy places the device firmly in the industrial and consumer embedded space, where deterministic real-time response and rich connectivity are required.
Key features of the PIC24FJ64GB108T-I/PT include its USB 2.0 full-speed On-The-Go (OTG) transceiver, three I2C peripherals, three SPI peripherals, four UART modules, and 23 independent timers. The 17-bit by 16-bit hardware multiplier and 16-bit hardware divider accelerate DSP-class math without software overhead, and the C-compiler-optimized architecture (MPLAB XC16) ensures code density. Standby current under 100 nA makes it well-suited for battery-powered designs, while the broad peripheral set reduces bill-of-materials cost.
Typical applications span USB peripherals (HID, CDC, MSD, audio class), low-power wireless sensor nodes, industrial data loggers, and human-interface panels. The combination of USB-OTG, ample RAM (16KB) for buffering, and low standby current also suits portable medical instruments and USB charging/host controllers.
When designing with this part, engineers should leverage MPLAB X IDE and the MPLAB Snap or PICkit 4 for programming/debugging via the 6-pin ICSP interface, and consult the device datasheet for USB bus-powering topologies (self-powered vs bus-powered). The 80-pin TQFP provides ample I/O but requires careful PCB escape routing; a 4-layer board is recommended for USB signal integrity.
直接替换替代料： PIC24FJ64GB108T-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： PIC24FJ64GB108T-I/PT （相同外形与封装尺寸） ——差异在于 Package, MSL Level, Timers, I/O Pins, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC24FJ64GB108-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ128GB108-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ128GB110-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.78 / 个
查看数据手册 →PIC24FJ256GB108-I/PT
✅ 直接替换✓ 有现货
$5.42 / 个
查看数据手册 →PIC24FJ64GA108T-I/PT
✅ 直接替换✓ 有现货
$3.99 / 个
查看数据手册 →PIC24FJ64GB106T-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.86 / 个
查看数据手册 →PIC24FJ64GB108T-I/PT 最大额定值与电气特性
| Architecture | PIC24F (16-bit modified Harvard) |
| Core Size | 16-bit |
| Program Memory (Flash) | 64 KB (22K x 24) |
| RAM | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 80-pin TQFP (PT), 12x12 mm |
| 安装类型 | Surface Mount |
| I/O Pins | 65 |
| USB Interface | USB 2.0 Full-Speed with On-The-Go (OTG) |
| I2C Peripherals | 3 |
| SPI Peripherals | 3 |
| UART Modules | 4 |
| Timers | 23 (16-bit and 32-bit) |
| Hardware Multiplier | 17-bit x 16-bit (single cycle) |
| Hardware Divider | 16-bit / 16-bit |
| Internal Oscillator | 8 MHz with 4x PLL and multiple divide options |
| Standby Current | <100 nA (typical, per datasheet) |
| MSL 等级 | 3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
| Programming/Debug | ICSP via MPLAB Snap / PICkit 4 |
| Compiler Support | MPLAB XC16 (C), MPASM (assembly) |
PIC24FJ64GB108T-I/PT 引脚配置
| 引脚 1 | RP15/C1IN-/AN15/PMD15/CN15/RB15 — Remappable peripheral / analog input / PMP data |
| 引脚 2 | RP14/C1IN+/AN14/PMD14/CN14/RB14 — Remappable peripheral / analog input / PMP data |
| 引脚 3 | RP13/AN13/PMD13/CN13/RB13 — Remappable peripheral / analog input |
| 引脚 4 | RP12/AN12/PMD12/CN12/RB12 — Remappable peripheral / analog input |
| 引脚 5 | RP11/AN11/PMD11/CN11/RB11 — Remappable peripheral / analog input |
| 引脚 6 | RP10/AN10/PMD10/CN10/RB10 — Remappable peripheral / analog input |
| 引脚 7 | RP9/AN9/PMD9/CN9/RB9 — Remappable peripheral / analog input |
| 引脚 8 | RP8/AN8/PMD8/CN8/RB8 — Remappable peripheral / analog input |
| 引脚 9 | RP7/AN7/PMD7/CN7/RB7 — Remappable peripheral / analog input |
| 引脚 10 | RP6/AN6/PMD6/CN6/RB6 — Remappable peripheral / analog input |
| 引脚 11 | RP5/AN5/PMD5/CN5/RB5 — Remappable peripheral / analog input |
| 引脚 12 | RP4/AN4/PMD4/CN4/RB4 — Remappable peripheral / analog input |
| 引脚 13 | RP3/AN3/PMD3/CN3/RB3 — Remappable peripheral / analog input |
| 引脚 14 | RP2/AN2/PMD2/CN2/RB2 — Remappable peripheral / analog input |
| 引脚 15 | RP1/AN1/PMD1/CN1/RB1 — Remappable peripheral / analog input |
| 引脚 16 | RP0/AN0/PMD0/CN0/RB0 — Remappable peripheral / analog input |
| 引脚 17 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| 引脚 18 | VCAP — External filter capacitor for internal core voltage regulator |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | OSC1/RA0 — Oscillator crystal input / general I/O |
| 引脚 21 | OSC2/RA1 — Oscillator crystal output / general I/O |
| 引脚 22 | SOSCO/RPC0/RA2 — Secondary oscillator output / general I/O |
| 引脚 23 | SOSCI/RPC1/RA3 — Secondary oscillator input / general I/O |
| 引脚 24 | D- — USB D- data line (full-speed) |
| 引脚 25 | D+ — USB D+ data line (full-speed) |
| 引脚 26 | VBUS — USB VBUS detect input |
| 引脚 27 | VUSB3V3 — USB internal 3.3 V regulator output (decoupling) |
| 引脚 28 | RA4 — General I/O |
| 引脚 29 | RA5 — General I/O |
| 引脚 30 | RA6 — General I/O |
| 引脚 31 | RA7 — General I/O |
| 引脚 32 | RC2 — General I/O |
| 引脚 33 | RC3 — General I/O |
| 引脚 34 | RC4 — General I/O |
| 引脚 35 | RC5 — General I/O |
| 引脚 36 | RD0 — General I/O |
| 引脚 37 | RD1 — General I/O |
| 引脚 38 | RD2 — General I/O |
| 引脚 39 | RD3 — General I/O |
| 引脚 40 | RD4 — General I/O |
| 引脚 41 | RD5 — General I/O |
| 引脚 42 | RD6 — General I/O |
| 引脚 43 | RD7 — General I/O |
| 引脚 44 | RF0 — General I/O |
| 引脚 45 | RF1 — General I/O |
| 引脚 46 | RF2 — General I/O |
| 引脚 47 | RF3 — General I/O |
| 引脚 48 | RF4 — General I/O |
| 引脚 49 | RF5 — General I/O |
| 引脚 50 | RF6 — General I/O |
| 引脚 51 | RF7 — General I/O |
| 引脚 52 | RG0 — General I/O |
| 引脚 53 | RG1 — General I/O |
| 引脚 54 | RG2 — General I/O |
| 引脚 55 | RG3 — General I/O |
| 引脚 56 | RG6 — General I/O |
| 引脚 57 | RG7 — General I/O |
| 引脚 58 | RG8 — General I/O |
| 引脚 59 | RG9 — General I/O |
| 引脚 60 | RG12 — General I/O |
| 引脚 61 | RG13 — General I/O |
| 引脚 62 | RG14 — General I/O |
| 引脚 63 | RG15 — General I/O |
| 引脚 64 | RE0 — General I/O |
| 引脚 65 | RE1 — General I/O |
| 引脚 66 | RE2 — General I/O |
| 引脚 67 | RE3 — General I/O |
| 引脚 68 | RE4 — General I/O |
| 引脚 69 | RE5 — General I/O |
| 引脚 70 | RE6 — General I/O |
| 引脚 71 | RE7 — General I/O |
| 引脚 72 | MCLR — Master clear (reset) input, active low |
| 引脚 73 | PGEC1/RA8 — ICSP programming clock / general I/O |
| 引脚 74 | PGED1/RA9 — ICSP programming data / general I/O |
| 引脚 75 | PGEC2/RA10 — ICSP alternate clock / general I/O |
| 引脚 76 | PGED2/RA11 — ICSP alternate data / general I/O |
| 引脚 77 | RA12 — General I/O |
| 引脚 78 | RA13 — General I/O |
| 引脚 79 | RA14 — General I/O |
| 引脚 80 | RA15 — General I/O |
典型应用
PIC24FJ64GB108T-I/PT 适用于 7 应用s: USB HID Peripherals, USB CDC Serial Bridges, Battery-Powered Data Loggers, Industrial Control Panels, Portable Medical Devices, USB Audio Class Devices, IoT Sensor Edge Nodes.
USB HID Peripherals
The PIC24FJ64GB108T-I/PT is an ideal host MCU for USB Human Interface Device (HID) peripherals such as keyboards, mice, game controllers, and custom HID-class input devices. Its integrated USB 2.0 full-speed OTG transceiver eliminates the need for an external PHY, reducing BOM cost and PCB area. With 16 KB of RAM and 64 KB Flash, the device can implement full HID report descriptors, consumer-control pages, and composite device stacks without external memory. Engineers can leverage Microchip's MLA USB stack and the MPLAB Code Configurator to generate HID class drivers quickly. The 32 MHz / 16 MIPS core provides sufficient throughput for USB polling at 1 kHz with margin for button debouncing and LED driving.
推荐
USB CDC Serial Bridges
For USB-to-UART bridge applications, the PIC24FJ64GB108T-I/PT integrates USB device, UART, and a fast 16-bit core that supports up to 921.6 kbps serial data rates alongside USB full-speed enumeration. The four UART modules enable multi-port USB-to-serial adapters or industrial gateway designs where multiple RS-232/RS-485 channels must be exposed to a host PC. With 65 GPIO available and industrial temperature rating (-40 C to +85 C), the part fits in factory-floor equipment and outdoor installations. Microchip's CDC class driver provides plug-and-play behavior on Windows, macOS, and Linux without additional driver installation.
推荐
Battery-Powered Data Loggers
The PIC24FJ64GB108T-I/PT excels in battery-powered data logging applications where its sub-100 nA standby current enables multi-year battery life when duty-cycled. The 16 KB RAM provides substantial buffer space for sensor samples before batch upload via USB, and the 23 timers support precise wake/sleep scheduling without external RTC chips. Engineers can use the on-chip 10-bit ADC with multiple channels to sample temperature, humidity, pressure, or analog sensor signals at intervals of seconds to hours. The 3.3 V VDD range is compatible with lithium coin-cell and primary battery chemistries when used with a boost regulator.
推荐
Industrial Control Panels
The PIC24FJ64GB108T-I/PT drives industrial control panels that combine USB configuration ports, multiple serial fieldbuses (RS-232, RS-485), and segmented LCD or LED indicators. Its 4x UART modules can simultaneously handle Modbus RTU on RS-485, a debug UART, and two inter-MCU communication channels. The 65 GPIO support keypad scanning, LCD data bus, status LEDs, and isolated digital I/O via opto-couplers. The -40 C to +85 C industrial temperature range and Microchip's long-term product longevity program make this MCU a fit for factory automation where 10-15 year product lifecycles are required.
推荐
Portable Medical Devices
For portable medical devices such as pulse oximeters, glucose meters, and handheld ultrasound probes, the PIC24FJ64GB108T-I/PT offers a compact 80-pin TQFP solution with USB device or USB-OTG connectivity for charging and data transfer to a host PC or tablet. The low standby current extends battery life between charges, while the 16 MIPS performance supports real-time DSP filtering of bio-sensor signals. The 16 KB RAM enables substantial sample buffering, and the hardware multiplier accelerates FIR/IIR filter calculations. USB-OTG support allows the medical device to act as both a device (charging) and host (reading from a USB accessory).
推荐
USB Audio Class Devices
The PIC24FJ64GB108T-I/PT implements USB audio class 1.0 devices such as USB microphones, USB speakers, and USB headsets, leveraging its USB full-speed peripheral and 16 MIPS performance for sample rates up to 48 kHz. The three SPI peripherals can drive external audio DACs and ADCs, while the 16 KB RAM supports audio sample buffering with minimal software overhead. The eXtreme Low Power architecture is advantageous for battery-powered USB headsets where the MCU can sleep during silence and wake on USB SOF tokens. Microchip's USB audio class stack provides a drop-in firmware framework for quick product development.
推荐
IoT Sensor Edge Nodes
The PIC24FJ64GB108T-I/PT serves as an edge MCU in IoT sensor nodes that communicate with a host gateway over USB or via local UART/SPI peripherals to a wireless module. With 64 KB Flash and 16 KB RAM, the device can host application logic, a small TCP/IP stack over USB-ECM (Ethernet Control Model), and sensor fusion algorithms. The 4x UART modules enable simultaneous connection to a Wi-Fi or LoRa module, a debug console, and two wired sensor buses. The industrial temperature rating supports outdoor and industrial IoT deployments.
推荐
推荐产品汇总
工程参考数据： PIC24FJ64GB108T-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 | PIC24FJ64GB108-I/PT | PIC24FJ128GB108-I/PT | PIC24FJ256GB108-I/PT | PIC24FJ64GA108T-I/PT |
|---|---|---|---|---|---|
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 128 KB (+100%) | 256 KB (+300%) | 64 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB Interface | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | None (USB absent) |
| I/O Pins | 65 | 65 | 65 | 65 | 65 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
关键差异点
- Integrated USB 2.0 Full-Speed OTG with on-chip transceiver （对比 PIC24FJ64GA108T-I/PT)
- Larger RAM for buffering on the same die （对比 PIC24FJ64GB106T-I/PT)
- 23 timers including 32-bit options for flexible PWM/capture （对比 PIC24FJ64GA010T-I/PT)
设计说明
Estimated: The PIC24FJ64GB108T-I/PT's VDD range of 2.0 V to 3.6 V requires a 3.3 V LDO or buck regulator upstream. For USB bus-powered designs, a 5 V to 3.3 V LDO such as Microchip's MCP1700 or MCP1727 is typical. Place 1uF and 0.1 uF decoupling capacitors as close as possible to each VDD/VSS pair on the TQFP-80, with a bulk 10uF tantalum or ceramic on the main 3.3 V rail. The VUSB3V3 pin (USB transceiver internal regulator output) requires a 0.01uF decoupling cap and should not be used to power external circuits.
USB signal integrity is critical for full-speed (12 Mbps) compliance. Route the D+ and D- traces as a 90-ohm differential pair with matched length (within 150 mil), keep them short, and place a common-mode choke or ferrite bead near the connector. A 4-layer PCB with a dedicated ground plane is strongly recommended; 2-layer boards can pass USB compliance if carefully laid out with ground returns under the D+/D- traces. The VBUS pin requires a 1uF decoupling capacitor and a divider network (or direct connection) to the 5 V USB input for VBUS detection.
Do not omit the VCAP pin decoupling capacitor (typically 10uF ceramic) on pin 18; without it the internal core voltage regulator will not start reliably and the part will appear non-functional. The MCLR pin (pin 72) must be pulled up to VDD via a 10 kohm resistor and have a 100 nF decoupling cap to ground for noise immunity. The ICSP programming pins (PGEC1/PGED1, pins 73/74) are shared with general I/O and should be reserved for programming/debug access in production designs. Forgetting to enable the PLL or wrong oscillator configuration in firmware is a common startup failure mode.
The TQFP-80 (PT) package has a theta_JA of approximately 50 C/W when mounted on a standard 4-layer JEDEC test board. Estimated: at maximum CPU activity (32 MHz, all peripherals active, USB transmitting continuously), the device draws around 30 mA at 3.3 V, dissipating approximately 100 mW. This yields a junction temperature rise of only 5 C above ambient, so no heatsink is required even at industrial 85 C ambient. However, in enclosed industrial enclosures with no airflow, derate the maximum ambient by 10-15 C to maintain margin.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40 C to +85 C). Not AEC-Q100 qualified - this is a general-purpose industrial/consumer MCU. Lead-free and halogen-free per Microchip environmental compliance documentation. MSL Level 3 per JEDEC J-STD-020.