PIC24FJ256GA108-I/PT - 16-Bit 32MHz 256KB Flash MCU | Microchip
MPN: PIC24FJ256GA108-I/PT ✓ Hoạt độngPIC24FJ256GA108-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC24FJ256GA108-I/PT — 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 PIC24FJ256GA108-I/PT (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Standby Current, Operating Temperature, Timers.
PIC24FJ256GA110-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ128GA108-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GA108T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ192GA108-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ128GA108-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GA108-I/PT Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 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 |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC24FJ256GA108-I/PT
| Chân 1 | RP29/RD9 — Remappable I/O or port RD9 |
| Chân 2 | RP30/RD10 — Remappable I/O or port RD10 |
| Chân 3 | RP31/RD11 — Remappable I/O or port RD11 |
| Chân 4 | VSS — Ground reference |
| Chân 5 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 6 | RP20/PMBE/RD4 — Remappable I/O, PMP bus enable, or port RD4 |
| Chân 7 | RP21/PMRD/RD5 — Remappable I/O, PMP read strobe, or port RD5 |
| Chân 8 | RP22/PMWR/RD6 — Remappable I/O, PMP write strobe, or port RD6 |
| Chân 9 | RP23/PMD0/RD7 — Remappable I/O, PMP data bit 0, or port RD7 |
| Chân 10 | RP24/PMD1/RD8 — Remappable I/O, PMP data bit 1, or port RD8 |
| Chân 11 | MCLR — Master Clear reset input (active low) |
| Chân 12 | RP0/RA0 — Remappable I/O or port RA0 |
| Chân 13 | RP1/RA1 — Remappable I/O or port RA1 |
| Chân 14 | RP2/RA2 — Remappable I/O or port RA2 |
| Chân 15 | RP3/RA3 — Remappable I/O or port RA3 |
| Chân 16 | RP4/RA4 — Remappable I/O or port RA4 |
| Chân 17 | RP5/RA5 — Remappable I/O or port RA5 |
| Chân 18 | VSS — Ground reference |
| Chân 19 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 20 | OSC1/CLKI/RA7 — External clock input or port RA7 |
| Chân 21 | OSC2/CLKO/RA8 — External clock output or port RA8 |
| Chân 22 | SOSCI/RP13/RA9 — Secondary oscillator input, remappable I/O, or port RA9 |
| Chân 23 | SOSCO/RP14/RA10 — Secondary oscillator output, remappable I/O, or port RA10 |
| Chân 24 | RP15/RA11 — Remappable I/O or port RA11 |
| Chân 25 | RP16/RA12 — Remappable I/O or port RA12 |
| Chân 26 | RP17/RA13 — Remappable I/O or port RA13 |
| Chân 27 | RP18/RA14 — Remappable I/O or port RA14 |
| Chân 28 | RP19/RA15 — Remappable I/O or port RA15 |
| Chân 29 | VSS — Ground reference |
| Chân 30 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 31 | RP6/RB0 — Remappable I/O or port RB0 |
| Chân 32 | RP7/RB1 — Remappable I/O or port RB1 |
| Chân 33 | RP8/RB2 — Remappable I/O or port RB2 |
| Chân 34 | RP9/RB3 — Remappable I/O or port RB3 |
| Chân 35 | RP10/RB4 — Remappable I/O or port RB4 |
| Chân 36 | RP11/RB5 — Remappable I/O or port RB5 |
| Chân 37 | RP12/RB6 — Remappable I/O or port RB6 |
| Chân 38 | RP25/RB7 — Remappable I/O or port RB7 |
| Chân 39 | RP26/RB8 — Remappable I/O or port RB8 |
| Chân 40 | RP27/RB9 — Remappable I/O or port RB9 |
| Chân 41 | RP28/RB10 — Remappable I/O or port RB10 |
| Chân 42 | RP29/RB11 — Remappable I/O or port RB11 |
| Chân 43 | RP30/RB12 — Remappable I/O or port RB12 |
| Chân 44 | RP31/RB13 — Remappable I/O or port RB13 |
| Chân 45 | VSS — Ground reference |
| Chân 46 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 47 | RP0/RC0 — Remappable I/O or port RC0 |
| Chân 48 | RP1/RC1 — Remappable I/O or port RC1 |
| Chân 49 | RP2/RC2 — Remappable I/O or port RC2 |
| Chân 50 | RP3/RC3 — Remappable I/O or port RC3 |
| Chân 51 | RP4/RC4 — Remappable I/O or port RC4 |
| Chân 52 | RP5/RC5 — Remappable I/O or port RC5 |
| Chân 53 | RP6/RC6 — Remappable I/O or port RC6 |
| Chân 54 | RP7/RC7 — Remappable I/O or port RC7 |
| Chân 55 | RP8/RC8 — Remappable I/O or port RC8 |
| Chân 56 | RP9/RC9 — Remappable I/O or port RC9 |
| Chân 57 | RP10/RC10 — Remappable I/O or port RC10 |
| Chân 58 | RP11/RC11 — Remappable I/O or port RC11 |
| Chân 59 | RP12/RC12 — Remappable I/O or port RC12 |
| Chân 60 | RP13/RC13 — Remappable I/O or port RC13 |
| Chân 61 | RP14/RC14 — Remappable I/O or port RC14 |
| Chân 62 | RP15/RC15 — Remappable I/O or port RC15 |
| Chân 63 | VSS — Ground reference |
| Chân 64 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 65 | PGED1/EMUD1/RF0 — ICSP data, ICD data, or port RF0 |
| Chân 66 | PGEC1/EMUC1/RF1 — ICSP clock, ICD clock, or port RF1 |
| Chân 67 | RF2 — Port RF2 |
| Chân 68 | RF3 — Port RF3 |
| Chân 69 | RF4 — Port RF4 |
| Chân 70 | RF5 — Port RF5 |
| Chân 71 | RF6 — Port RF6 |
| Chân 72 | RF7 — Port RF7 |
| Chân 73 | RF8 — Port RF8 |
| Chân 74 | VSS — Ground reference |
| Chân 75 | VDD — Positive supply voltage (2.0-3.6V) |
| Chân 76 | PGED2/EMUD2/RG0 — ICSP data 2, ICD data 2, or port RG0 |
| Chân 77 | PGEC2/EMUC2/RG1 — ICSP clock 2, ICD clock 2, or port RG1 |
| Chân 78 | RG2 — Port RG2 |
| Chân 79 | RG3 — Port RG3 |
| Chân 80 | RG6 — Port RG6 |
Ứng dụng tiêu biểu
PIC24FJ256GA108-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24FJ256GA108-I/PT — 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 | 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 |
Bảo phân biệt quan trọng
- Largest flash density in the GA108 family at 256 KB (vsPIC24FJ128GA108-I/PT)
- Industrial temperature range optimized for consumer-grade cost (vsPIC24FJ128GA108-E/PT)
- Same-family member with broader package options (vsPIC24FJ256GA110-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - use automotive-grade PIC24 variants for vehicle applications.
