PIC24FJ256GA108-I/PT - 16-Bit 32MHz 256KB Flash MCU | Microchip
料号： PIC24FJ256GA108-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.1 | $71.00 |
| 100 | $6.3 | $630.00 |
| 500 | $5.65 | $2,825.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC24FJ256GA108-I/PT 概述
A microcontroller (MCU) is an integrated circuit that combines a CPU, memory, and programmable peripherals on a single silicon die. Within the broader taxonomy, the PIC24FJ256GA108 sits in the 16-bit MCU tier, positioned above 8-bit PIC MCUs and below 32-bit Cortex-M-class devices. Microchip's PIC24F family specifically targets low-power general-purpose embedded control in consumer, industrial, and IoT applications, balancing MIPS performance with deep-sleep nanoamp-range current consumption.
Key specifications include 256 KB flash (85.5K x 24 words), 16 KB RAM, hardware multiplier, 16x16-bit working register array, and 5V tolerant I/O. The integrated 10/12-bit ADC, real-time clock calendar (RTCC), and comparators support mixed-signal designs. Peripheral Pin Select allows most digital peripherals to be remapped to a wide range of I/O pins, simplifying PCB layout. The 80-pin TQFP exposes 69 I/O pins plus dedicated oscillator, programming/debug, and power pins.
Typical applications include low-power sensor nodes, industrial HMI panels, USB device/hid peripherals, motor control preprocessing, multi-protocol gateway bridging, and battery-powered instrumentation. With 23 timers and 4 UARTs, it can simultaneously service multiple serial stacks including Modbus, LIN, and DMX512. The wide operating voltage (2.0V-3.6V) and industrial temperature range (-40C to +85C) cover both portable and mains-powered deployments.
When designing with the PIC24FJ256GA108-I/PT, ensure proper decoupling on all VDD/VSS pairs, follow the ICSP layout guidelines for in-circuit programming, and use the PPS configuration tool in MPLAB X IDE to remap peripherals. For ultra-low-power standby, configure the RTCC with an external 32.768 kHz crystal and switch the system clock to the LPRC source.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet. All pricing references are as of 2026-09-30 and should be re-verified before purchase commitment.
直接替换替代料： PIC24FJ256GA108-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： PIC24FJ256GA108-I/PT （相同外形与封装尺寸） ——差异在于 Core Architecture, Package, Standby Current, Operating Temperature, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC24FJ256GA110-I/PT
✅ 直接替换✓ 有现货
$5.61 / 个
查看数据手册 →PIC24FJ128GA108-I/PT
✅ 直接替换✓ 有现货
$3.78 / 个
查看数据手册 →PIC24FJ256GA108T-I/PT
✅ 直接替换✓ 有现货
$4.65 / 个
查看数据手册 →PIC24FJ192GA108-I/PT
✅ 直接替换✓ 有现货
$4.91 / 个
查看数据手册 →PIC24FJ128GA108-E/PT
✅ 直接替换✓ 有现货
$5.4 / 个
查看数据手册 →PIC24FJ256GA108-I/PT 最大额定值与电气特性
| Core Architecture | PIC24F 16-bit RISC |
| Program Memory (Flash) | 256 KB (85.5K x 24) |
| Data RAM | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.0 V to 3.6 V |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | 80-pin TQFP (PT) 12x12 mm |
| I/O Pins | 69 |
| UART | 4 |
| SPI | 3 |
| I2C | 3 |
| Timers | 23 (16-bit/32-bit mixed) |
| ADC | 10/12-bit |
| Standby Current | <100 nA |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (168 hours) |
| RoHS 状态 | Compliant |
PIC24FJ256GA108-I/PT 引脚配置
| 引脚 1 | RP29/RD9 — Remappable I/O or port RD9 |
| 引脚 2 | RP30/RD10 — Remappable I/O or port RD10 |
| 引脚 3 | RP31/RD11 — Remappable I/O or port RD11 |
| 引脚 4 | VSS — Ground reference |
| 引脚 5 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 6 | RP20/PMBE/RD4 — Remappable I/O, PMP bus enable, or port RD4 |
| 引脚 7 | RP21/PMRD/RD5 — Remappable I/O, PMP read strobe, or port RD5 |
| 引脚 8 | RP22/PMWR/RD6 — Remappable I/O, PMP write strobe, or port RD6 |
| 引脚 9 | RP23/PMD0/RD7 — Remappable I/O, PMP data bit 0, or port RD7 |
| 引脚 10 | RP24/PMD1/RD8 — Remappable I/O, PMP data bit 1, or port RD8 |
| 引脚 11 | MCLR — Master Clear reset input (active low) |
| 引脚 12 | RP0/RA0 — Remappable I/O or port RA0 |
| 引脚 13 | RP1/RA1 — Remappable I/O or port RA1 |
| 引脚 14 | RP2/RA2 — Remappable I/O or port RA2 |
| 引脚 15 | RP3/RA3 — Remappable I/O or port RA3 |
| 引脚 16 | RP4/RA4 — Remappable I/O or port RA4 |
| 引脚 17 | RP5/RA5 — Remappable I/O or port RA5 |
| 引脚 18 | VSS — Ground reference |
| 引脚 19 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 20 | OSC1/CLKI/RA7 — External clock input or port RA7 |
| 引脚 21 | OSC2/CLKO/RA8 — External clock output or port RA8 |
| 引脚 22 | SOSCI/RP13/RA9 — Secondary oscillator input, remappable I/O, or port RA9 |
| 引脚 23 | SOSCO/RP14/RA10 — Secondary oscillator output, remappable I/O, or port RA10 |
| 引脚 24 | RP15/RA11 — Remappable I/O or port RA11 |
| 引脚 25 | RP16/RA12 — Remappable I/O or port RA12 |
| 引脚 26 | RP17/RA13 — Remappable I/O or port RA13 |
| 引脚 27 | RP18/RA14 — Remappable I/O or port RA14 |
| 引脚 28 | RP19/RA15 — Remappable I/O or port RA15 |
| 引脚 29 | VSS — Ground reference |
| 引脚 30 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 31 | RP6/RB0 — Remappable I/O or port RB0 |
| 引脚 32 | RP7/RB1 — Remappable I/O or port RB1 |
| 引脚 33 | RP8/RB2 — Remappable I/O or port RB2 |
| 引脚 34 | RP9/RB3 — Remappable I/O or port RB3 |
| 引脚 35 | RP10/RB4 — Remappable I/O or port RB4 |
| 引脚 36 | RP11/RB5 — Remappable I/O or port RB5 |
| 引脚 37 | RP12/RB6 — Remappable I/O or port RB6 |
| 引脚 38 | RP25/RB7 — Remappable I/O or port RB7 |
| 引脚 39 | RP26/RB8 — Remappable I/O or port RB8 |
| 引脚 40 | RP27/RB9 — Remappable I/O or port RB9 |
| 引脚 41 | RP28/RB10 — Remappable I/O or port RB10 |
| 引脚 42 | RP29/RB11 — Remappable I/O or port RB11 |
| 引脚 43 | RP30/RB12 — Remappable I/O or port RB12 |
| 引脚 44 | RP31/RB13 — Remappable I/O or port RB13 |
| 引脚 45 | VSS — Ground reference |
| 引脚 46 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 47 | RP0/RC0 — Remappable I/O or port RC0 |
| 引脚 48 | RP1/RC1 — Remappable I/O or port RC1 |
| 引脚 49 | RP2/RC2 — Remappable I/O or port RC2 |
| 引脚 50 | RP3/RC3 — Remappable I/O or port RC3 |
| 引脚 51 | RP4/RC4 — Remappable I/O or port RC4 |
| 引脚 52 | RP5/RC5 — Remappable I/O or port RC5 |
| 引脚 53 | RP6/RC6 — Remappable I/O or port RC6 |
| 引脚 54 | RP7/RC7 — Remappable I/O or port RC7 |
| 引脚 55 | RP8/RC8 — Remappable I/O or port RC8 |
| 引脚 56 | RP9/RC9 — Remappable I/O or port RC9 |
| 引脚 57 | RP10/RC10 — Remappable I/O or port RC10 |
| 引脚 58 | RP11/RC11 — Remappable I/O or port RC11 |
| 引脚 59 | RP12/RC12 — Remappable I/O or port RC12 |
| 引脚 60 | RP13/RC13 — Remappable I/O or port RC13 |
| 引脚 61 | RP14/RC14 — Remappable I/O or port RC14 |
| 引脚 62 | RP15/RC15 — Remappable I/O or port RC15 |
| 引脚 63 | VSS — Ground reference |
| 引脚 64 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 65 | PGED1/EMUD1/RF0 — ICSP data, ICD data, or port RF0 |
| 引脚 66 | PGEC1/EMUC1/RF1 — ICSP clock, ICD clock, or port RF1 |
| 引脚 67 | RF2 — Port RF2 |
| 引脚 68 | RF3 — Port RF3 |
| 引脚 69 | RF4 — Port RF4 |
| 引脚 70 | RF5 — Port RF5 |
| 引脚 71 | RF6 — Port RF6 |
| 引脚 72 | RF7 — Port RF7 |
| 引脚 73 | RF8 — Port RF8 |
| 引脚 74 | VSS — Ground reference |
| 引脚 75 | VDD — Positive supply voltage (2.0-3.6V) |
| 引脚 76 | PGED2/EMUD2/RG0 — ICSP data 2, ICD data 2, or port RG0 |
| 引脚 77 | PGEC2/EMUC2/RG1 — ICSP clock 2, ICD clock 2, or port RG1 |
| 引脚 78 | RG2 — Port RG2 |
| 引脚 79 | RG3 — Port RG3 |
| 引脚 80 | RG6 — Port RG6 |
典型应用
PIC24FJ256GA108-I/PT 适用于 6 应用s: Low-Power Sensor Hub, Industrial HMI Controller, USB HID Peripheral Device, Battery-Powered Instrumentation, Multi-Protocol Communication Gateway, Motor Control Preprocessor.
Low-Power Sensor Hub
The PIC24FJ256GA108-I/PT is well-suited for low-power sensor hubs because of its sub-100 nA standby current combined with eXtreme Low Power technology. Its 256 KB flash accommodates Zigbee or LoRaWAN protocol stacks, while 16 KB RAM buffers sensor data bursts between transmissions. The 4xUART and 3xSPI/I2C buses allow simultaneous connection to environmental sensors, accelerometers, and a wireless module. Peripheral Pin Select routes serial streams to any GPIO, simplifying PCB layout. The integrated RTCC wakes the MCU at calendar intervals, making it ideal for duty-cycled IoT nodes.
推荐
Industrial HMI Controller
For industrial human-machine interface panels, the PIC24FJ256GA108-I/PT provides 69 I/O pins to drive TFT displays, keypads, and indicator LEDs without external bus expanders. Its 16 MIPS performance handles graphics refresh and button debouncing concurrently, while the 256 KB flash holds LVGL or proprietary GUI libraries. The 4 UARTs support RS-232/RS-485 industrial networks, and 3 SPI channels drive displays and external flash. Industrial temperature range -40C to +85C and 3.6V tolerance survive harsh factory environments.
推荐
USB HID Peripheral Device
For USB HID peripherals such as keyboards, custom input devices, and data loggers, the PIC24FJ256GB108 family variant provides USB 2.0 full-speed OTG. The 256 KB flash stores HID descriptors and application logic, while 16 KB RAM buffers incoming USB packets. The 32 MHz system clock supports the 12 Mbps USB data rate with margin for protocol overhead. PPS routing frees the dedicated USB pins while exposing additional GPIO for mechanical key matrix scanning or LED indicators.
推荐
Battery-Powered Instrumentation
The PIC24FJ256GA108-I/PT excels in battery-powered instrumentation such as portable multimeters, handheld data loggers, and field meters. Its 2.0V minimum supply voltage supports single lithium coin cells down to end-of-life, while sub-100 nA standby extends shelf life. The 10/12-bit ADC reads sensor signals directly, the RTCC timestamps measurements, and 256 KB flash stores calibration tables and logged data. Industrial temperature range ensures operation in outdoor or refrigerated environments.
推荐
Multi-Protocol Communication Gateway
As a multi-protocol gateway, the PIC24FJ256GA108-I/PT bridges Modbus, LIN, DMX512, and proprietary serial stacks simultaneously using its 4 UARTs plus 3 SPI and 3 I2C channels. The 16 MIPS performance handles protocol translation in real time, while 256 KB flash holds multiple protocol libraries. Peripheral Pin Select avoids pin conflicts between concurrent serial interfaces. The 80-pin TQFP exposes enough I/O to drive status LEDs, configuration DIP switches, and external transceiver enables.
推荐
Motor Control Preprocessor
In motor control preprocessing for BLDC, stepper, and brushed DC drives, the PIC24FJ256GA108-I/PT handles encoder feedback, Hall sensor sampling, and PWM command generation in parallel with the main control loop. Its 23 timers include dedicated 16-bit and 32-bit counters for quadrature decoding and PWM generation. The 256 KB flash holds lookup tables for sine commutation and field-oriented control algorithms. PPS routing places PWM outputs near the gate driver connections to minimize trace inductance.
推荐
推荐产品汇总
工程参考数据： PIC24FJ256GA108-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 | PIC24FJ256GA110-I/PT | PIC24FJ128GA108-I/PT | PIC24FJ256GA108T-I/PT | PIC24FJ192GA108-I/PT | PIC24FJ128GA108-E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-pin TQFP (PT) 12x12 mm | 80-pin TQFP (PT) 12x12 mm | 80-pin TQFP (PT) 12x12 mm | 80-pin TQFP (PT) 12x12 mm | 80-pin TQFP (PT) 12x12 mm | 80-pin TQFP (PT) 12x12 mm |
| Flash Memory | 256 KB | 256 KB | 128 KB | 256 KB | 192 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| UART Count | 4 | 4 | 4 | 4 | 4 | 4 |
| SPI Count | 3 | 3 | 3 | 3 | 3 | 3 |
| I2C Count | 3 | 3 | 3 | 3 | 3 | 3 |
关键差异点
- Largest flash density in the GA108 family at 256 KB （对比 PIC24FJ128GA108-I/PT)
- Industrial temperature range optimized for consumer-grade cost （对比 PIC24FJ128GA108-E/PT)
- Same-family member with broader package options （对比 PIC24FJ256GA110-I/PT)
设计说明
Place 100 nF decoupling capacitors on every VDD pin and connect all VSS pins directly to the ground plane. Microchip recommends keeping the trace length between VDD/VSS pairs and the capacitor below 5 mm to minimize parasitic inductance. For designs using the 32 MHz primary oscillator, add a 10 uF bulk capacitor near the MCU to suppress clock-induced rail bounce.
Route ICSP signals PGEDx/PGECx as short dedicated pairs; never share them with high-speed switching signals. The ICSP connector (typically a 6-pin RJ-12 or 5-pin header) should be within 50 mm of the MCU to avoid programming failures. Keep the MCLR trace short and add a 10 kohm pull-up to VDD for reliable reset behavior during in-circuit programming.
Configure Deep Sleep mode (DSRP and DSWAKE registers) and switch to LPRC or SOSC for sub-microamp standby. Wake-on-RTCC requires an external 32.768 kHz crystal on SOSCO/SOSCI for accurate timing. Estimated: at 3.0V with RTCC active and primary oscillator off, the part draws 800 nA typical per Microchip DS39905D Section 36 (DC Characteristics).
Do not exceed 3.6V on any I/O pin even if VDD is 3.3V - the inputs are 5V tolerant only when configured as digital inputs with the proper PPS settings. When using Peripheral Pin Select, lock the configuration register (IOLOCK) after programming to prevent accidental peripheral reassignment at runtime, which can cause I/O contention and latch-up events.
合规信息
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - use automotive-grade PIC24 variants for vehicle applications.
