PIC24FJ256GA704T-I/PT - 16-bit 32MHz 256KB Flash MCU | Microchip
Référence : PIC24FJ256GA704T-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.79 | $57,90 |
| 100 | $5.04 | $504,00 |
| 500 | $4.31 | $2 155,00 |
| 1 000 | $3.84 | $3 840,00 |
PIC24FJ256GA704T-I/PT Présentation
What is a PIC24F microcontroller? A PIC24F is a 16-bit modified-Harvard microcontroller from Microchip that occupies the middle ground between 8-bit PIC16/PIC18 parts and 32-bit PIC32 devices. The F-series is optimized for low-power, mixed-signal applications and uses a 16-bit data path with a 24-bit instruction word, giving higher code density than 8-bit cores while remaining simpler and cheaper than PIC32. The "PIC" taxonomy extends: PIC24F -> PIC24 family -> 16-bit microcontroller -> microcontroller -> embedded processor -> semiconductor.
Key features include up to 256 KB of self-programmable Flash with ECC, 16 KB SRAM, hardware DMA, a USB 2.0 full-speed On-The-Go peripheral, multiple UART/SPI/I2C interfaces, three input-capture modules, five timer/counter modules, and a real-time clock calendar with RTCC alarm. The part carries the eXtreme Low Power (XLP) label, with sleep currents below 1 uA in deep sleep and multiple low-power modes that make it suited to battery-driven designs.
The architecture couples a 16-bit datapath with single-cycle multiply, divide support via hardware, and a 24-bit instruction set. DMA offloads data movement between peripherals and memory, freeing the CPU for application code. The CTMU produces a constant-current source for capacitive touch sensing without an external analog front end.
Typical applications include capacitive touch human-machine interfaces, USB peripherals, low-power sensor hubs, industrial control panels, portable medical monitors, and consumer appliances that need USB connectivity plus low standby drain.
A practical design tip: this -I/PT industrial-temperature variant is rated -40 C to +85 C, so it is acceptable for outdoor enclosures with internal heating, but for under-hood automotive use choose a -V variant or another AEC-Q100 part.
This page consolidates distributor pricing, drop-in same-package alternatives drawn from the PIC24FJ256GA704 family, and practical design notes that are not aggregated in the manufacturer datasheet.
Alternatives de remplacement direct pour PIC24FJ256GA704T-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 PIC24FJ256GA704T-I/PT (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, Core Architecture, Program Memory (Flash), ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC24FJ256GA704-I/PT
✅ Remplacement direct✓ En stock
$2.85 / unité
Voir la fiche technique →PIC24FJ128GA704-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC24FJ128GA704T-I/PT
✅ Remplacement direct✓ En stock
$3.16 / unité
Voir la fiche technique →PIC24FJ256GA704-E/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.1 / unité
Voir la fiche technique →PIC24FJ128GA705-I/PT
✅ Remplacement direct✓ En stock
$2.83 / unité
Voir la fiche technique →PIC24FJ256GA704T-I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC24F 16-bit modified Harvard |
| Program Memory (Flash) | 256 KB (85.5K x 24 instruction words) with ECC |
| Data Memory (RAM) | 16 KB |
| Maximum CPU Speed | 32 MHz (32 MIPS) |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| ADC | 12-bit, up to 200 ksps, up to 14 analog channels |
| Comparators | 3 analog comparators |
| CTMU | Yes (Charge Time Measurement Unit for touch / time-of-flight) |
| DMA | Yes (hardware DMA controller) |
| USB | USB 2.0 Full-Speed On-The-Go |
| UART / SPI / I2C | Multiple instances (refer to device datasheet) |
| Timers | 5x 16-bit timer/counter + 32.768 kHz RTCC |
| I/O Current Sink/Source | 18 mA / 18 mA on all I/O pins |
| Température de fonctionnement | -40 C to +85 C (industrial, "I") |
| Boîtier | 44-pin TQFP (10x10 mm), "PT" |
| Type de montage | Surface Mount, Tape & Reel ("T" suffix) |
| Niveau MSL | 3 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
Configuration des broches de PIC24FJ256GA704T-I/PT
| Broche 1 | SDA2/RP9/RA9 — I2C2 SDA or remappable peripheral / GPIO |
| Broche 2 | RP8/RA8 — Remappable peripheral / GPIO |
| Broche 3 | RP7/RA7 — Remappable peripheral / GPIO |
| Broche 4 | RP6/RA6 — Remappable peripheral / GPIO |
| Broche 5 | VREF+/AN0/RA0 — ADC Vref+ / analog input 0 / GPIO |
| Broche 6 | VREF-/AN1/RA1 — ADC Vref- / analog input 1 / GPIO |
| Broche 7 | AN2/C2IND/RP13/RB13 — Analog input / comparator input / remappable / GPIO |
| Broche 8 | AN3/C2INC/RP14/RB14 — Analog input / comparator input / remappable / GPIO |
| Broche 9 | AN4/C1IND/RP15/RB15 — Analog input / comparator input / remappable / GPIO |
| Broche 10 | AN5/C1INC/RPI16/RB0 — Analog input / comparator input / GPIO |
| Broche 11 | PGED3/AN6/RPI17/RB1 — ICD debug data / analog input / GPIO |
| Broche 12 | VSS — Ground reference |
| Broche 13 | VDD — Digital supply voltage (2.0-3.6 V) |
| Broche 14 | PGEC3/AN7/RPI18/RB2 — ICD debug clock / analog input / GPIO |
| Broche 15 | AN8/RPI19/RB3 — Analog input / GPIO |
| Broche 16 | AN9/RPI20/RB4 — Analog input / GPIO |
| Broche 17 | CVREF+/AN10/RPI21/RB5 — Comparator Vref+ / analog input / GPIO |
| Broche 18 | CVREF-/AN11/RPI22/RB6 — Comparator Vref- / analog input / GPIO |
| Broche 19 | AN12/RPI23/RB7 — Analog input / GPIO |
| Broche 20 | SOSCO/RPC0/RC0 — Secondary oscillator output / GPIO |
| Broche 21 | SOSCI/RPC1/RC1 — Secondary oscillator input / GPIO |
| Broche 22 | D-/RPC2/RC2 — USB D- / GPIO |
| Broche 23 | D+/RPC3/RC3 — USB D+ / GPIO |
| Broche 24 | RP22/RPC4/RC4 — Remappable peripheral / GPIO |
| Broche 25 | RP23/RPC5/RC5 — Remappable peripheral / GPIO |
| Broche 26 | RP24/RPC6/RC6 — Remappable peripheral / GPIO |
| Broche 27 | RP25/RPC7/RC7 — Remappable peripheral / GPIO |
| Broche 28 | RP26/RPC8/RC8 — Remappable peripheral / GPIO |
| Broche 29 | RP27/RPC9/RC9 — Remappable peripheral / GPIO |
| Broche 30 | SCL1/RG2 — I2C1 SCL / GPIO |
| Broche 31 | SDA1/RG3 — I2C1 SDA / GPIO |
| Broche 32 | MCLR — Master clear (reset) input, active low |
| Broche 33 | OSCI/CLKI/RA2 — Primary oscillator input / external clock |
| Broche 34 | OSCO/CLKO/RA3 — Primary oscillator output |
| Broche 35 | PGED1/SDA2/RA4 — ICD data / I2C SDA / GPIO |
| Broche 36 | PGEC1/SCL2/RA5 — ICD clock / I2C SCL / GPIO |
| Broche 37 | TMS/RPI32/RB8 — JTAG TMS / GPIO |
| Broche 38 | VDD — Digital supply voltage (2.0-3.6 V) |
| Broche 39 | VSS — Ground reference |
| Broche 40 | TCK/RPI33/RB9 — JTAG TCK / GPIO |
| Broche 41 | TDO/RPI34/RB10 — JTAG TDO / GPIO |
| Broche 42 | TDI/RPI35/RB11 — JTAG TDI / GPIO |
| Broche 43 | RPI36/RB12 — GPIO |
| Broche 44 | RP19/RG0 — Remappable peripheral / GPIO |
Applications typiques
PIC24FJ256GA704T-I/PT convient pour 7 applications: Capacitive Touch HMI, USB Peripheral Devices, Battery-Powered Sensor Hubs, Industrial Control Panels, Portable Medical Monitors, Home Appliance UI Controllers, IoT Edge Nodes with USB Debug.
Capacitive Touch HMI
The PIC24FJ256GA704T-I/PT suits capacitive touch human-machine interfaces because its integrated CTMU provides a precision constant-current source for measuring RC rise times on touch electrodes without an external analog front end. The 256 KB of ECC Flash holds USB stacks, GUI bitmaps, and gesture libraries while leaving headroom for application code. Twelve-bit ADC at 200 ksps plus three comparators allow redundant slider/wheel decoding, and 18 mA sink/source I/O drive LEDs and piezo feedback directly. The XLP sleep modes drop below 1 uA between touches, enabling battery-powered remote controls and white-goods panels to run for years on a coin cell.
Recommandé
USB Peripheral Devices
With on-chip USB 2.0 Full-Speed On-The-Go, the PIC24FJ256GA704T-I/PT acts as a USB device, host, or OTG without an external PHY. The 256 KB Flash accommodates the Microchip MLA USB library plus vendor-class firmware, while hardware DMA offloads endpoint transfers to free the CPU for application logic. The 32 MIPS core is fast enough to drive HID, CDC, vendor-class, and even basic mass-storage stacks at USB Full-Speed. Compared to designs needing an external FTDI bridge, integrating the USB directly reduces BOM cost and PCB area.
Recommandé
Battery-Powered Sensor Hubs
eXtreme Low Power XLP technology makes the PIC24FJ256GA704T-I/PT a strong fit for battery-powered sensor hubs that spend most of their time asleep. Sleep currents below 1 uA and multiple wake-up sources (RTCC alarm, external interrupt, peripheral trigger) let the device sample on a duty cycle that can stretch a CR2032 coin cell to multiple years. The 14-channel 12-bit ADC, three comparators, and CTMU all remain available in low-power modes, enabling continuous battery-voltage monitoring without waking the core.
Recommandé
Industrial Control Panels
Industrial control panels benefit from the PIC24FJ256GA704T-I/PT's industrial -40 C to +85 C rating, 18 mA I/O drive that interfaces with 24 V signal conditioning through external drivers, and the 32 MIPS core that runs real-time control loops and HMI logic. Hardware DMA feeds ADC samples into RAM while the CPU executes PID or state-machine code, and the ECC Flash improves reliability in noisy industrial environments where cosmic or EMI-induced bit flips are possible. The 44-pin TQFP provides enough I/O for keypad scanning, LCD segment driving via external charge-pump, and field-bus transceivers.
Recommandé
Portable Medical Monitors
Portable medical monitors such as pulse oximeters, glucose meters, and single-lead ECG patches leverage the PIC24FJ256GA704T-I/PT's 12-bit ADC at 200 ksps, low-power sleep modes, and USB device capability. The ECC Flash supports firmware integrity required by FDA/IEC 62304 documentation, while the 16 KB RAM buffers streaming sensor samples between USB transfers. CTMU drives precision resistive or temperature sensor bridges, and the 32 MIPS core runs lightweight DSP filters in real time without an external DSP IC.
Recommandé
Home Appliance UI Controllers
Home appliances including washing machines, dishwashers, induction cooktops, and smart ovens use the PIC24FJ256GA704T-I/PT to combine capacitive touch, LED-segment or TFT control, and motor-driver interfaces on one die. The 256 KB Flash stores multi-language UI assets, while 16 KB RAM smooths out touch-event debouncing and animation rendering. RTCC keeps wall-clock time during standby, and the XLP sleep modes keep idle power under Energy Star limits. The 44-pin TQFP pinout leaves enough GPIOs for relay drivers and triac controls.
Recommandé
IoT Edge Nodes with USB Debug
IoT edge nodes that need a USB debug/programming port but small wireless BOM find the PIC24FJ256GA704T-I/PT a pragmatic choice. The integrated USB OTG port doubles as a debugging interface via the Microchip MPLAB REAL ICE or PICkit 4 in-circuit programmers. DMA, ECC Flash, and 32 MIPS throughput allow sensor-fusion and protocol translation to run locally, reducing cloud traffic and improving response time for industrial IoT gateways. RTC and CTMU support wake-on-touch and wake-on-timer flows.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC24FJ256GA704T-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC24FJ256GA704-I/PT | PIC24FJ128GA704-I/PT | PIC24FJ128GA704T-I/PT | PIC24FJ256GA704-E/PT | PIC24FJ128GA705-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Flash Memory | 256 KB ECC | 256 KB ECC | 128 KB | 128 KB | 256 KB ECC | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Max CPU Speed | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS | 32 MHz / 32 MIPS |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C |
| Packaging Form | Tape & Reel ("T") | Tray | Tray | Tape & Reel | Tray | Tray |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| CTMU Touch Channels | Yes (multiple channels) | Yes | Yes | Yes | Yes | Yes (extended) |
Principaux différenciateurs
- Higher Flash density at the same pin-count and price-tier (vs PIC24FJ128GA704-I/PT)
- Tape-and-reel form for high-volume SMT assembly (vs PIC24FJ256GA704-I/PT)
- Industrial temperature grade with lower qualification cost (vs PIC24FJ256GA704-E/PT)
- Larger Flash for OTA-capable firmware designs (vs PIC24FJ128GA705-I/PT)
Notes de conception
The PIC24FJ256GA704 runs from a single 2.0 V to 3.6 V supply. Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 13 and 38 in the TQFP-44 package) and a bulk 4.7 uF capacitor near the package. USB designs also need a 100 nF on the VUSB rail if USB is enabled. The eXtreme Low Power (XLP) sleep modes drop quiescent current to less than 1 uA with RTCC active, but only when all peripherals are properly disabled before the SLEEP instruction and JTAG pins are not floating.
For the 44-pin TQFP (10x10 mm body, 0.8 mm pitch), use a 4-layer PCB with a continuous ground plane under the device. The exposed thermal pad is not present on this package, but the 18 mA sink/source I/O drive means return-current paths must be wide. Keep the 32 kHz secondary oscillator traces short and guard them with a ground pour to avoid injecting noise into the ADC. MCLR should have a 10 kohm pull-up and a 100 nF to ground for in-circuit debug reliability.
Do not assume the PIC24FJ256GA704-I/PT and PIC24FJ256GA704T-I/PT have different silicon - the 'T' suffix only indicates tape-and-reel packaging. However, verify the operating temperature suffix: 'I' is -40 C to +85 C industrial, while 'E' is -40 C to +125 C extended. Mixing the two in a hot enclosure will violate the industrial-grade thermal derating. Also remember that the CTMU constant-current source requires firmware calibration; without it, touch thresholds drift by tens of percent across units.
Route the USB D+ and D- differential pair with 90 ohm differential impedance and keep total length under 50 mm to meet USB Full-Speed signal-integrity requirements. Place the 15 kohm pull-down on D- and the 1.5 kohm pull-up on D+ (only when the device is acting as USB device) as close to the MCU pins as possible. Avoid routing USB traces near switching regulators or oscillators, because USB signaling edge rates are 12 Mbps and adjacent noise couples in readily.
Informations de conformité
RoHS compliant per Microchip product page; industrial -40 C to +85 C temperature grade; not AEC-Q100 qualified - select an AEC-Q100 variant for automotive designs. MSL Level 3 floor life per JEDEC J-STD-020.
