PIC24FJ256GA108-I/PT - 16-Bit 32MHz 256KB Flash MCU | Microchip
MPN: PIC24FJ256GA108-I/PT ✓ פעילPIC24FJ256GA108-I/PT סקירה
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.
חלופות תחליף ישיר עבור PIC24FJ256GA108-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC24FJ256GA108-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Core Architecture, Package, Standby Current, Operating Temperature, Timers.
PIC24FJ256GA110-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GA108-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GA108T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ192GA108-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GA108-E/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GA108-I/PT דירוגים מרביים ומאפיינים חשמליים
| 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 |
| טמפרטורת פעולה | -40C to +85C (Industrial) |
| מארז | 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 |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 (168 hours) |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC24FJ256GA108-I/PT
| פין 1 | RP29/RD9 — Remappable I/O or port RD9 |
| פין 2 | RP30/RD10 — Remappable I/O or port RD10 |
| פין 3 | RP31/RD11 — Remappable I/O or port RD11 |
| פין 4 | VSS — Ground reference |
| פין 5 | VDD — Positive supply voltage (2.0-3.6V) |
| פין 6 | RP20/PMBE/RD4 — Remappable I/O, PMP bus enable, or port RD4 |
| פין 7 | RP21/PMRD/RD5 — Remappable I/O, PMP read strobe, or port RD5 |
| פין 8 | RP22/PMWR/RD6 — Remappable I/O, PMP write strobe, or port RD6 |
| פין 9 | RP23/PMD0/RD7 — Remappable I/O, PMP data bit 0, or port RD7 |
| פין 10 | RP24/PMD1/RD8 — Remappable I/O, PMP data bit 1, or port RD8 |
| פין 11 | MCLR — Master Clear reset input (active low) |
| פין 12 | RP0/RA0 — Remappable I/O or port RA0 |
| פין 13 | RP1/RA1 — Remappable I/O or port RA1 |
| פין 14 | RP2/RA2 — Remappable I/O or port RA2 |
| פין 15 | RP3/RA3 — Remappable I/O or port RA3 |
| פין 16 | RP4/RA4 — Remappable I/O or port RA4 |
| פין 17 | RP5/RA5 — Remappable I/O or port RA5 |
| פין 18 | VSS — Ground reference |
| פין 19 | VDD — Positive supply voltage (2.0-3.6V) |
| פין 20 | OSC1/CLKI/RA7 — External clock input or port RA7 |
| פין 21 | OSC2/CLKO/RA8 — External clock output or port RA8 |
| פין 22 | SOSCI/RP13/RA9 — Secondary oscillator input, remappable I/O, or port RA9 |
| פין 23 | SOSCO/RP14/RA10 — Secondary oscillator output, remappable I/O, or port RA10 |
| פין 24 | RP15/RA11 — Remappable I/O or port RA11 |
| פין 25 | RP16/RA12 — Remappable I/O or port RA12 |
| פין 26 | RP17/RA13 — Remappable I/O or port RA13 |
| פין 27 | RP18/RA14 — Remappable I/O or port RA14 |
| פין 28 | RP19/RA15 — Remappable I/O or port RA15 |
| פין 29 | VSS — Ground reference |
| פין 30 | VDD — Positive supply voltage (2.0-3.6V) |
| פין 31 | RP6/RB0 — Remappable I/O or port RB0 |
| פין 32 | RP7/RB1 — Remappable I/O or port RB1 |
| פין 33 | RP8/RB2 — Remappable I/O or port RB2 |
| פין 34 | RP9/RB3 — Remappable I/O or port RB3 |
| פין 35 | RP10/RB4 — Remappable I/O or port RB4 |
| פין 36 | RP11/RB5 — Remappable I/O or port RB5 |
| פין 37 | RP12/RB6 — Remappable I/O or port RB6 |
| פין 38 | RP25/RB7 — Remappable I/O or port RB7 |
| פין 39 | RP26/RB8 — Remappable I/O or port RB8 |
| פין 40 | RP27/RB9 — Remappable I/O or port RB9 |
| פין 41 | RP28/RB10 — Remappable I/O or port RB10 |
| פין 42 | RP29/RB11 — Remappable I/O or port RB11 |
| פין 43 | RP30/RB12 — Remappable I/O or port RB12 |
| פין 44 | RP31/RB13 — Remappable I/O or port RB13 |
| פין 45 | VSS — Ground reference |
| פין 46 | VDD — Positive supply voltage (2.0-3.6V) |
| פין 47 | RP0/RC0 — Remappable I/O or port RC0 |
| פין 48 | RP1/RC1 — Remappable I/O or port RC1 |
| פין 49 | RP2/RC2 — Remappable I/O or port RC2 |
| פין 50 | RP3/RC3 — Remappable I/O or port RC3 |
| פין 51 | RP4/RC4 — Remappable I/O or port RC4 |
| פין 52 | RP5/RC5 — Remappable I/O or port RC5 |
| פין 53 | RP6/RC6 — Remappable I/O or port RC6 |
| פין 54 | RP7/RC7 — Remappable I/O or port RC7 |
| פין 55 | RP8/RC8 — Remappable I/O or port RC8 |
| פין 56 | RP9/RC9 — Remappable I/O or port RC9 |
| פין 57 | RP10/RC10 — Remappable I/O or port RC10 |
| פין 58 | RP11/RC11 — Remappable I/O or port RC11 |
| פין 59 | RP12/RC12 — Remappable I/O or port RC12 |
| פין 60 | RP13/RC13 — Remappable I/O or port RC13 |
| פין 61 | RP14/RC14 — Remappable I/O or port RC14 |
| פין 62 | RP15/RC15 — Remappable I/O or port RC15 |
| פין 63 | VSS — Ground reference |
| פין 64 | VDD — Positive supply voltage (2.0-3.6V) |
| פין 65 | PGED1/EMUD1/RF0 — ICSP data, ICD data, or port RF0 |
| פין 66 | PGEC1/EMUC1/RF1 — ICSP clock, ICD clock, or port RF1 |
| פין 67 | RF2 — Port RF2 |
| פין 68 | RF3 — Port RF3 |
| פין 69 | RF4 — Port RF4 |
| פין 70 | RF5 — Port RF5 |
| פין 71 | RF6 — Port RF6 |
| פין 72 | RF7 — Port RF7 |
| פין 73 | RF8 — Port RF8 |
| פין 74 | VSS — Ground reference |
| פין 75 | VDD — Positive supply voltage (2.0-3.6V) |
| פין 76 | PGED2/EMUD2/RG0 — ICSP data 2, ICD data 2, or port RG0 |
| פין 77 | PGEC2/EMUC2/RG1 — ICSP clock 2, ICD clock 2, or port RG1 |
| פין 78 | RG2 — Port RG2 |
| פין 79 | RG3 — Port RG3 |
| פין 80 | RG6 — Port RG6 |
יישומים טיפוסיים
PIC24FJ256GA108-I/PT מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC24FJ256GA108-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Largest flash density in the GA108 family at 256 KB (לעומתPIC24FJ128GA108-I/PT)
- Industrial temperature range optimized for consumer-grade cost (לעומתPIC24FJ128GA108-E/PT)
- Same-family member with broader package options (לעומתPIC24FJ256GA110-I/PT)
הערות תכנון
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.
מידע על תאימות
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - use automotive-grade PIC24 variants for vehicle applications.
