PIC24FJ256GA705T-I/PT - 256KB Flash 16-bit MCU | Microchip
MPN: PIC24FJ256GA705T-I/PT ✓ פעילPIC24FJ256GA705T-I/PT סקירה
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and programmable peripherals. The PIC24F family sits in Microchip's 16-bit MCU hierarchy (PIC24F -> PIC24 -> dsPIC -> 16-bit MCU -> Microcontroller -> Embedded IC), balancing 8-bit simplicity with 32-bit performance. This makes PIC24F devices ideal for applications that need more headroom than an 8-bit PIC16/PIC18 can offer but do not justify the cost of a Cortex-M class MCU.
Key features include a 12-bit ADC at 200 ksps with up to 14 analog input channels, three analog comparators, a Charge Time Measurement Unit (CTMU) for capacitive touch sensing, multiple serial interfaces (UART, SPI, I2C), and 5V-tolerant I/O. The 32 MHz core with 16 MIPS throughput delivers responsive control-loop performance for sensor and motor tasks. The XLP Sleep mode typically draws sub-uA current, enabling multi-year battery life on appropriate duty cycles.
The device integrates a 16-bit modified Harvard architecture with a wide 24-bit instruction word, achieving deterministic interrupt response and single-cycle multiply support. Peripherals map through a Peripheral Pin Select (PPS) subsystem, giving flexible digital-function-to-pin assignment on the 48-pin TQFP. ECC Flash adds single-bit error correction to improve reliability in harsh environments.
Typical applications include consumer appliances, capacitive touch human-machine interfaces, low-power IoT sensor nodes, USB/HID peripherals, and industrial control panels. The 256 KB program space accommodates full USB stacks, graphics libraries, and OTA-bootloader designs without external memory.
When designing with this MCU, plan the Peripheral Pin Select (PPS) mapping early because some peripherals are remappable while supply and clock pins are fixed. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair, and follow Microchip's recommended 32.768 kHz crystal layout for low-power RTC accuracy.
This page consolidates distributor pricing for the tape-and-reel PIC24FJ256GA705T-I/PT, pin-compatible same-family drop-ins, and design notes distilled from Microchip's Family Data Sheet and reference manual chapters.
חלופות תחליף ישיר עבור PIC24FJ256GA705T-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 PIC24FJ256GA705T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Package, Operating Temperature, Core Architecture, ADC, Mounting Type.
PIC24FJ256GA705-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC24FJ256GA704T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GA704-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GA705-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GA705-I/M4
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GA704T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GB412T-I/BG
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GA705T-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Program Memory (Flash) | 256 KB (85.5K x 24) with ECC |
| Data Memory (RAM) | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V (3.3 V typical) |
| טמפרטורת פעולה | -40 C to +85 C (Industrial) |
| מארז | 48-pin TQFP (7x7 mm, 0.5 mm pitch) |
| ADC | 12-bit, up to 200 ksps, up to 14 analog inputs |
| Analog Comparators | 3 |
| CTMU (Capacitive Touch) | Yes |
| UART / SPI / I2C | Multiple serial interfaces |
| Peripheral Pin Select (PPS) | Yes (remappable peripherals) |
| סוג הרכבה | Surface Mount (Tape and Reel) |
| סטטוס RoHS | Compliant |
| Family Low-Power Mode | eXtreme Low Power (XLP), sub-uA Sleep |
תצורת פינים של PIC24FJ256GA705T-I/PT
| פין 1 | RP5/RB5 — Remappable I/O / I/O port B5 |
| פין 2 | RP6/RB6 — Remappable I/O / I/O port B6 |
| פין 3 | RP7/RB7 — Remappable I/O / I/O port B7 |
| פין 4 | RP8/RB8 — Remappable I/O / I/O port B8 |
| פין 5 | RP9/RB9 — Remappable I/O / I/O port B9 |
| פין 6 | VSS — Ground |
| פין 7 | VDD — Positive supply (2.0V-3.6V) |
| פין 8 | RP10/RB10 — Remappable I/O / I/O port B10 |
| פין 9 | RP11/RB11 — Remappable I/O / I/O port B11 |
| פין 10 | RP12/RB12 — Remappable I/O / I/O port B12 |
| פין 11 | RP13/RB13 — Remappable I/O / I/O port B13 |
| פין 12 | RP14/RB14 — Remappable I/O / I/O port B14 |
| פין 13 | OSC1/RC12 — Crystal oscillator input / I/O port C12 |
| פין 14 | OSC2/RC13 — Crystal oscillator output / I/O port C13 |
| פין 15 | SOSCO/RB4 — Secondary oscillator / I/O port B4 |
| פין 16 | SOSCI/RB5 — Secondary oscillator / I/O port B5 |
| פין 17 | VDD — Positive supply |
| פין 18 | VSS — Ground |
| פין 19 | RP15/RB15 — Remappable I/O / I/O port B15 |
| פין 20 | RP0/RA0 — Remappable I/O / I/O port A0 |
| פין 21 | RP1/RA1 — Remappable I/O / I/O port A1 |
| פין 22 | RP2/RA2 — Remappable I/O / I/O port A2 |
| פין 23 | RP3/RA3 — Remappable I/O / I/O port A3 |
| פין 24 | RP4/RA4 — Remappable I/O / I/O port A4 |
| פין 25 | VSS — Ground |
| פין 26 | VDD — Positive supply |
| פין 27 | AN0/RA0 — Analog input 0 / I/O port A0 |
| פין 28 | AN1/RA1 — Analog input 1 / I/O port A1 |
| פין 29 | AN2/RA2 — Analog input 2 / I/O port A2 |
| פין 30 | AN3/RA3 — Analog input 3 / I/O port A3 |
| פין 31 | AN4/RA4 — Analog input 4 / I/O port A4 |
| פין 32 | AN5/RA5 — Analog input 5 / I/O port A5 |
| פין 33 | AN6/RA6 — Analog input 6 / I/O port A6 |
| פין 34 | AN7/RA7 — Analog input 7 / I/O port A7 |
| פין 35 | AN8/RB0 — Analog input 8 / I/O port B0 |
| פין 36 | AN9/RB1 — Analog input 9 / I/O port B1 |
| פין 37 | AN10/RB2 — Analog input 10 / I/O port B2 |
| פין 38 | AN11/RB3 — Analog input 11 / I/O port B3 |
| פין 39 | VSS — Ground |
| פין 40 | VDD — Positive supply |
| פין 41 | PGEC1 — Programming/debug clock |
| פין 42 | PGED1 — Programming/debug data |
| פין 43 | PGEC2 — Programming/debug clock alternate |
| פין 44 | PGED2 — Programming/debug data alternate |
| פין 45 | MCLR — Master clear (reset) |
| פין 46 | AVSS — Analog ground |
| פין 47 | AVDD — Analog positive supply |
| פין 48 | VREF+/CVREF+/AN0 — ADC voltage reference positive |
יישומים טיפוסיים
PIC24FJ256GA705T-I/PT מתאים עבור 6 יישוםs: Capacitive Touch HMI, Battery-Powered IoT Sensor Node, USB HID / Consumer Peripheral, Industrial Control Panel, Low-Power Data Logger, Consumer Appliance Main Controller.
Capacitive Touch HMI
The PIC24FJ256GA705T-I/PT is engineered for capacitive touch human-machine interfaces because it integrates the CTMU (Charge Time Measurement Unit), a 12-bit ADC at 200 ksps, and ample 256 KB Flash for touch libraries. The CTMU delivers stable charge-time measurement across up to 14 input channels, supporting sliders, buttons, and proximity sensors with sub-percent repeatability. The XLP Sleep mode draws sub-uA, making the device practical for battery-powered remote controls and kitchen appliances. Combined with 5V-tolerant digital I/O, the same PCB can interface legacy 5V displays without external level shifters. Firmware complexity - including gesture recognition and LED feedback - fits comfortably within the 85.5K x 24 program word Flash.
מומלץ
Battery-Powered IoT Sensor Node
For wireless sensor endpoints, the PIC24FJ256GA705T-I/PT pairs its eXtreme Low Power Sleep modes with 256 KB Flash for protocol stacks like LoRaWAN or BLE-over-UART bridges. The 16 KB RAM buffers transient bursts before Sleep, and the 32 MHz core wakes within microseconds for transmissions. The 12-bit ADC at 200 ksps supports temperature, humidity, and battery-voltage telemetry through the same analog front-end. The 48-pin TQFP footprint is well-suited to compact sensor PCBs where the same package also serves a PIC24FJ128GA705-I/PT cost-down variant. Sub-uA Sleep extends coin-cell life into multi-year ranges on duty-cycled measurements.
מומלץ
USB HID / Consumer Peripheral
The PIC24FJ256GA705T-I/PT is well-suited to USB Full-Speed HID peripherals - keyboards, mice, game controllers, custom HID - thanks to its integrated USB 2.0 Full-Speed transceiver and 256 KB Flash that easily accommodates the Microchip USB stack plus application code. The 16 MIPS core handles HID polling without bottleneck, and PPS flexibility keeps PCB routing simple even on a 48-pin TQFP. The 12-bit ADC supports analog joystick or trigger inputs, while 5V-tolerant I/O accepts external power-rail signals. XLP Sleep is useful when bus-powered devices enter suspend to meet USB-IF suspend current limits.
מומלץ
Industrial Control Panel
The PIC24FJ256GA705T-I/PT fits 48-pin TQFP industrial control panels because it offers the -40C to +85C industrial temperature grade, ECC Flash for harsh-environment reliability, and Peripheral Pin Select for flexible PCB layouts. The 12-bit ADC at 200 ksps handles analog inputs from 4-20 mA loops, while PWM and capture/compare peripherals drive motor and valve actuators. ECC Flash corrects single-bit soft errors, extending mean time between failures in electrically noisy industrial cabinets. The 256 KB Flash accommodates protocol libraries (Modbus, CAN, or custom) alongside application logic.
מומלץ
Low-Power Data Logger
The PIC24FJ256GA705T-I/PT suits portable data loggers thanks to its XLP sub-uA Sleep, 16 KB RAM buffer, and 256 KB Flash for local data storage and time-stamped metadata. The 12-bit ADC supports external sensor bridges, while the 32 MHz core processes logged data into compressed records before returning to Sleep. PPS flexibility allows UART, SPI, or I2C to reach external EEPROM or SD cards without pin-rework. The 48-pin TQFP keeps the board compact for wearable loggers, and the industrial temperature grade extends deployments to outdoor and automotive test environments.
מומלץ
Consumer Appliance Main Controller
The PIC24FJ256GA705T-I/PT is a strong choice for main appliance controllers such as coffee machines, microwave ovens, washing-machine HMIs, and air purifiers. Its 12-bit ADC reads sensor bridges, three comparators detect zero-cross events for AC line control, and PWM outputs drive triac or relay drivers. The 256 KB Flash houses the appliance state machine plus display rendering. The 48-pin TQFP provides enough I/O for the human-machine interface and power-converter feedback loops. ECC Flash and the -40C to +85C industrial grade support the long-lifecycle thermal and EMI environment of household appliances.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC24FJ256GA705T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC24FJ256GA705-I/PT | PIC24FJ256GA704T-I/PT | PIC24FJ256GA704-I/PT | PIC24FJ128GA705-I/PT | PIC24FJ256GA705-I/M4 |
|---|---|---|---|---|---|---|
| Package | 48-pin TQFP (7x7 mm) | 48-pin TQFP (7x7 mm) - same | 48-pin TQFP (7x7 mm) - same | 48-pin TQFP (7x7 mm) - same | 48-pin TQFP (7x7 mm) - same | 48-pin TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB (-50%) | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Max CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| ADC | 12-bit, 200 ksps | 12-bit, 200 ksps | 12-bit, 200 ksps | 12-bit, 200 ksps | 12-bit, 200 ksps | 12-bit, 200 ksps |
| CTMU / Touch | Yes | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Packaging Media | Tape & Reel | Tray | Tape & Reel | Tray | Tray | Tray/M4 media |
מבדילים עיקריים
- 256 KB Flash with ECC at 16 MIPS in 48-TQFP (לעומתPIC24FJ128GA705-I/PT)
- Tape-and-reel media for SMT lines (לעומתPIC24FJ256GA705-I/PT)
- Integrated CTMU for capacitive touch (לעומתPIC24FJ256GB412T-I/BG)
הערות תכנון
The PIC24FJ256GA705T-I/PT operates from 2.0 V to 3.6 V and supports eXtreme Low Power modes that drop quiescent current below 1 uA in Sleep. Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair, and add a bulk 4.7 uF to 10 uF tantalum or ceramic cap near the IC. For USB applications, route VBUS detection to a 5V-tolerant I/O and include a 1 uF bypass to ground at the regulator output.
Use the standard 48-pin TQFP 0.5 mm pitch land pattern with a 7x7 mm body. Keep the 32.768 kHz secondary oscillator traces short and guarded by ground - place the load capacitors within 5 mm of SOSCO/SOSCI. Avoid routing high-frequency digital signals under the analog supply (AVDD/AVSS) plane to minimise ADC crosstalk, and keep analog inputs short and away from switching nodes.
Mapped peripheral functions require Peripheral Pin Select (PPS) configuration in firmware; remappable pins do not have peripheral functions enabled by default. The MCLR pin must be pulled up to VDD for normal operation - leaving it floating causes the device to remain in reset. Programming/debug pins PGECx/PGEDx must be accessible in production boards for in-system programming and ICSP.
מידע על תאימות
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; not applicable for consumer/industrial MCU use case. Halogen-free status not stated in the verified web data.
