PIC24FJ256GA108-I/PT - 16-Bit 32MHz 256KB Flash MCU | Microchip
Référence : PIC24FJ256GA108-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 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 Présentation
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.
Alternatives de remplacement direct pour PIC24FJ256GA108-I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC24FJ256GA108-I/PT (même facteur de forme et même empreinte) — différant par Core Architecture, Package, Standby Current, Operating Temperature, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC24FJ256GA110-I/PT
✅ Remplacement direct✓ En stock
$5.61 / unité
Voir la fiche technique →PIC24FJ128GA108-I/PT
✅ Remplacement direct✓ En stock
$3.78 / unité
Voir la fiche technique →PIC24FJ256GA108T-I/PT
✅ Remplacement direct✓ En stock
$4.65 / unité
Voir la fiche technique →PIC24FJ192GA108-I/PT
✅ Remplacement direct✓ En stock
$4.91 / unité
Voir la fiche technique →PIC24FJ128GA108-E/PT
✅ Remplacement direct✓ En stock
$5.4 / unité
Voir la fiche technique →PIC24FJ256GA108-I/PT Valeurs maximales et caractéristiques électriques
| 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 |
| Température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 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 |
| Type de montage | Surface Mount |
| Niveau MSL | 3 (168 hours) |
| Statut RoHS | Compliant |
Configuration des broches de PIC24FJ256GA108-I/PT
| Broche 1 | RP29/RD9 — Remappable I/O or port RD9 |
| Broche 2 | RP30/RD10 — Remappable I/O or port RD10 |
| Broche 3 | RP31/RD11 — Remappable I/O or port RD11 |
| Broche 4 | VSS — Ground reference |
| Broche 5 | VDD — Positive supply voltage (2.0-3.6V) |
| Broche 6 | RP20/PMBE/RD4 — Remappable I/O, PMP bus enable, or port RD4 |
| Broche 7 | RP21/PMRD/RD5 — Remappable I/O, PMP read strobe, or port RD5 |
| Broche 8 | RP22/PMWR/RD6 — Remappable I/O, PMP write strobe, or port RD6 |
| Broche 9 | RP23/PMD0/RD7 — Remappable I/O, PMP data bit 0, or port RD7 |
| Broche 10 | RP24/PMD1/RD8 — Remappable I/O, PMP data bit 1, or port RD8 |
| Broche 11 | MCLR — Master Clear reset input (active low) |
| Broche 12 | RP0/RA0 — Remappable I/O or port RA0 |
| Broche 13 | RP1/RA1 — Remappable I/O or port RA1 |
| Broche 14 | RP2/RA2 — Remappable I/O or port RA2 |
| Broche 15 | RP3/RA3 — Remappable I/O or port RA3 |
| Broche 16 | RP4/RA4 — Remappable I/O or port RA4 |
| Broche 17 | RP5/RA5 — Remappable I/O or port RA5 |
| Broche 18 | VSS — Ground reference |
| Broche 19 | VDD — Positive supply voltage (2.0-3.6V) |
| Broche 20 | OSC1/CLKI/RA7 — External clock input or port RA7 |
| Broche 21 | OSC2/CLKO/RA8 — External clock output or port RA8 |
| Broche 22 | SOSCI/RP13/RA9 — Secondary oscillator input, remappable I/O, or port RA9 |
| Broche 23 | SOSCO/RP14/RA10 — Secondary oscillator output, remappable I/O, or port RA10 |
| Broche 24 | RP15/RA11 — Remappable I/O or port RA11 |
| Broche 25 | RP16/RA12 — Remappable I/O or port RA12 |
| Broche 26 | RP17/RA13 — Remappable I/O or port RA13 |
| Broche 27 | RP18/RA14 — Remappable I/O or port RA14 |
| Broche 28 | RP19/RA15 — Remappable I/O or port RA15 |
| Broche 29 | VSS — Ground reference |
| Broche 30 | VDD — Positive supply voltage (2.0-3.6V) |
| Broche 31 | RP6/RB0 — Remappable I/O or port RB0 |
| Broche 32 | RP7/RB1 — Remappable I/O or port RB1 |
| Broche 33 | RP8/RB2 — Remappable I/O or port RB2 |
| Broche 34 | RP9/RB3 — Remappable I/O or port RB3 |
| Broche 35 | RP10/RB4 — Remappable I/O or port RB4 |
| Broche 36 | RP11/RB5 — Remappable I/O or port RB5 |
| Broche 37 | RP12/RB6 — Remappable I/O or port RB6 |
| Broche 38 | RP25/RB7 — Remappable I/O or port RB7 |
| Broche 39 | RP26/RB8 — Remappable I/O or port RB8 |
| Broche 40 | RP27/RB9 — Remappable I/O or port RB9 |
| Broche 41 | RP28/RB10 — Remappable I/O or port RB10 |
| Broche 42 | RP29/RB11 — Remappable I/O or port RB11 |
| Broche 43 | RP30/RB12 — Remappable I/O or port RB12 |
| Broche 44 | RP31/RB13 — Remappable I/O or port RB13 |
| Broche 45 | VSS — Ground reference |
| Broche 46 | VDD — Positive supply voltage (2.0-3.6V) |
| Broche 47 | RP0/RC0 — Remappable I/O or port RC0 |
| Broche 48 | RP1/RC1 — Remappable I/O or port RC1 |
| Broche 49 | RP2/RC2 — Remappable I/O or port RC2 |
| Broche 50 | RP3/RC3 — Remappable I/O or port RC3 |
| Broche 51 | RP4/RC4 — Remappable I/O or port RC4 |
| Broche 52 | RP5/RC5 — Remappable I/O or port RC5 |
| Broche 53 | RP6/RC6 — Remappable I/O or port RC6 |
| Broche 54 | RP7/RC7 — Remappable I/O or port RC7 |
| Broche 55 | RP8/RC8 — Remappable I/O or port RC8 |
| Broche 56 | RP9/RC9 — Remappable I/O or port RC9 |
| Broche 57 | RP10/RC10 — Remappable I/O or port RC10 |
| Broche 58 | RP11/RC11 — Remappable I/O or port RC11 |
| Broche 59 | RP12/RC12 — Remappable I/O or port RC12 |
| Broche 60 | RP13/RC13 — Remappable I/O or port RC13 |
| Broche 61 | RP14/RC14 — Remappable I/O or port RC14 |
| Broche 62 | RP15/RC15 — Remappable I/O or port RC15 |
| Broche 63 | VSS — Ground reference |
| Broche 64 | VDD — Positive supply voltage (2.0-3.6V) |
| Broche 65 | PGED1/EMUD1/RF0 — ICSP data, ICD data, or port RF0 |
| Broche 66 | PGEC1/EMUC1/RF1 — ICSP clock, ICD clock, or port RF1 |
| Broche 67 | RF2 — Port RF2 |
| Broche 68 | RF3 — Port RF3 |
| Broche 69 | RF4 — Port RF4 |
| Broche 70 | RF5 — Port RF5 |
| Broche 71 | RF6 — Port RF6 |
| Broche 72 | RF7 — Port RF7 |
| Broche 73 | RF8 — Port RF8 |
| Broche 74 | VSS — Ground reference |
| Broche 75 | VDD — Positive supply voltage (2.0-3.6V) |
| Broche 76 | PGED2/EMUD2/RG0 — ICSP data 2, ICD data 2, or port RG0 |
| Broche 77 | PGEC2/EMUC2/RG1 — ICSP clock 2, ICD clock 2, or port RG1 |
| Broche 78 | RG2 — Port RG2 |
| Broche 79 | RG3 — Port RG3 |
| Broche 80 | RG6 — Port RG6 |
Applications typiques
PIC24FJ256GA108-I/PT convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC24FJ256GA108-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Largest flash density in the GA108 family at 256 KB (vs PIC24FJ128GA108-I/PT)
- Industrial temperature range optimized for consumer-grade cost (vs PIC24FJ128GA108-E/PT)
- Same-family member with broader package options (vs PIC24FJ256GA110-I/PT)
Notes de conception
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.
Informations de conformité
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - use automotive-grade PIC24 variants for vehicle applications.
