PIC24FJ64GA702T-I/SO - 16-bit 32MHz 64KB Flash MCU | Microchip
N.º de pieza: PIC24FJ64GA702T-I/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.41 | $3,41 |
| 10 | $3.07 | $30,70 |
| 100 | $2.73 | $273,00 |
| 500 | $2.39 | $1.195,00 |
| 1.000 | $2.14 | $2.140,00 |
PIC24FJ64GA702T-I/SO Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals such as ADCs, timers, communication interfaces, and I/O pins. The PIC24F family occupies the 16-bit tier in Microchip's portfolio (8-bit PIC10/12/16/18 -> 16-bit PIC24F/dsPIC -> 32-bit PIC32), offering a balance of processing power, peripheral integration, and eXtreme Low Power consumption for embedded designs.
Key features of the PIC24FJ64GA702 include 22 general-purpose I/O pins, multiple communication peripherals (UART, SPI, I2C), a 16-bit timer/counter architecture, and an integrated crypto engine for secure applications. The eXtreme Low Power (XLP) technology enables deep-sleep currents in the microampere range, making the part suitable for battery-powered IoT endpoints. ECC Flash (Error-Correcting Code Flash) protects against bit-flip soft errors, a reliability advantage in industrial and automotive environments.
The architecture is built around a modified Harvard core with 16-bit instructions and a 24-bit instruction word, supporting DSP-like operations. The 12-bit ADC achieves 200 ksps with multiple conversion trigger sources, and the CTMU enables touch buttons, sliders, and proximity sensing without external components. DMA support reduces CPU load during data-intensive peripheral operations.
Typical applications include consumer electronics with capacitive touch interfaces, IoT sensor nodes, low-power wireless sensor platforms, industrial control front-ends, USB human-interface devices, and portable medical monitors. The 28-pin SOIC footprint is widely accepted for hand-soldering and low-cost prototyping, while still providing enough I/O for typical embedded designs.
When designing with this part, consider the 2.0V to 3.6V VDD range and the 32 MHz maximum CPU clock. Use MPLAB X IDE with XC16 compiler and the PICkit 4 or MPLAB ICD 4 for programming and debug. The 'T' suffix indicates tape-and-reel packaging for SMT assembly.
This page synthesizes distributor pricing, drop-in alternatives within the 28-SOIC footprint, and practical design notes for embedded engineers - information not consolidated on the manufacturer datasheet alone.
Alternativas directas para PIC24FJ64GA702T-I/SO — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC24FJ64GA702T-I/SO (mismo factor de forma y huella) — difiere en Operating Temperature, Package, ADC, MSL Level, Program Memory (Flash).
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC24FJ64GA702-E/SO
✅ Sustitución directa✓ En stock
$2.41 / unidad
Ver hoja de datos →PIC24FJ64GA702-I/SO
✅ Sustitución directa✓ En stock
$2.34 / unidad
Ver hoja de datos →PIC24FJ128GA702T-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24FJ256GA702T-I/SO
✅ Sustitución directa✓ En stock
$3.21 / unidad
Ver hoja de datos →PIC24FJ64GA702T-I/SO
✅ Sustitución directa✓ En stock
$2.14 / unidad
Ver hoja de datos →PIC24FJ64GA702T-I/SO Valores máximos y características eléctricas
| Core | PIC24F (16-bit modified Harvard) |
| CPU Speed | 32 MHz (16 MIPS) |
| Flash Program Memory | 64 KB (22K x 24) with ECC |
| RAM | 8 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| ADC | 12-bit, up to 200 ksps, up to 14 channels |
| Comparators | 3 |
| CTMU (Touch) | Yes |
| I/O Pins | 22 |
| Encapsulado | 28-SOIC (wide, 7.50 mm body) |
| Temperatura de funcionamiento | -40C to +85C (Industrial, 'I') |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 3 |
| Estado RoHS | Compliant |
| Packaging | Tape and Reel ('T' suffix) |
Configuración de pines de PIC24FJ64GA702T-I/SO
| Pin 1 | RA0 — Port A bit 0 / analog input |
| Pin 2 | RA1 — Port A bit 1 / analog input |
| Pin 3 | RA2 — Port A bit 2 / analog input |
| Pin 4 | RA3 — Port A bit 3 / analog input |
| Pin 5 | RA4 — Port A bit 4 |
| Pin 6 | VDD — Positive supply voltage (2.0-3.6 V) |
| Pin 7 | OSCI/CLKI — Crystal oscillator input / external clock |
| Pin 8 | OSCO/CLKO — Crystal oscillator output |
| Pin 9 | RA5 — Port A bit 5 |
| Pin 10 | RA6 — Port A bit 6 |
| Pin 11 | RC0 — Port C bit 0 |
| Pin 12 | RC1 — Port C bit 1 |
| Pin 13 | RC2 — Port C bit 2 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RC3 — Port C bit 3 |
| Pin 16 | RC4 — Port C bit 4 |
| Pin 17 | RC5 — Port C bit 5 |
| Pin 18 | RC6 — Port C bit 6 |
| Pin 19 | RC7 — Port C bit 7 |
| Pin 20 | RB0 — Port B bit 0 / analog input |
| Pin 21 | RB1 — Port B bit 1 / analog input |
| Pin 22 | RB2 — Port B bit 2 / analog input |
| Pin 23 | RB3 — Port B bit 3 / analog input |
| Pin 24 | RB4 — Port B bit 4 |
| Pin 25 | RB5 — Port B bit 5 |
| Pin 26 | RB6 — Port B bit 6 / PGEC1 (programming clock) |
| Pin 27 | RB7 — Port B bit 7 / PGED1 (programming data) |
| Pin 28 | VSS — Ground reference |
Aplicaciones típicas
PIC24FJ64GA702T-I/SO es adecuado para 7 aplicacións: Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, Industrial Control Front-End, USB Human Interface Device (HID), Portable Medical / Health Monitor, LED Lighting Controller, Consumer Electronics with Display Interface.
Capacitive Touch User Interface
The PIC24FJ64GA702T-I/SO is well matched to capacitive touch human-machine interface designs. Its on-chip CTMU (Charge Time Measurement Unit) provides deterministic charge-time-based touch sensing on up to 14 channels without external analog front-end components, enabling touch buttons, sliders, and proximity sensors with a 1 mm overlay. The 16 MIPS PIC24F core runs Microchip's mTouch library firmware to discriminate touches from environmental drift in real time. The 32 MHz clock supports a 100 Hz scan rate on 12 buttons while leaving MIPS headroom for the application state machine and backlight PWM. Operating from 2.0-3.6 V, the part integrates cleanly into 3.3 V Li-ion and 2xAA battery-powered appliances. Reduced pin count - 22 GPIO in 28-SOIC - is sufficient for typical 8-12 button touch panels plus indicator LEDs and a UART link.
Recomendado
Battery-Powered IoT Sensor Node
For wireless sensor endpoints, the PIC24FJ64GA702T-I/SO provides the eXtreme Low Power (XLP) performance that keeps years-long battery life feasible. Sleep current drops into the microampere range with full RAM retention and peripheral wake-up; the 12-bit ADC samples environmental sensors at 200 ksps and DMA hands data to RAM without waking the CPU. The 16 MIPS core runs an RTOS or Microchip's Harmony 3 framework to drive a UART/SPI radio such as the Microchip RN4871 BLE module. Wake-up sources include RTCC alarm, ADC threshold compare, and external interrupts, all configurable in firmware. At 3.3 V from 2xAA cells, the part plus RN4871 can deliver 5+ year life on a 2000 mAh pack with hourly sensor reads.
Recomendado
Industrial Control Front-End
The PIC24FJ64GA702T-I/SO is suitable for industrial sensor conditioning and control front-ends thanks to its ECC Flash (single-error correction/double-error detection), 2.0-3.6 V operation, and 12-bit ADC with 200 ksps throughput. Industrial sites demand immunity to single-event upsets from radiation and supply noise; ECC Flash reduces field failure risk in PLCs, motor drives, and process instrumentation. The 22 GPIO can drive opto-isolated 24 V outputs and read 4-20 mA sensor loops through external signal conditioning. The CTMU measures temperature via time-of-charge on a thermistor network. Modbus RTU over UART, plus SPI for display drivers, integrates with the PIC24F peripheral set. The 28-SOIC package is rework-friendly for long-life industrial SKUs.
Recomendado
USB Human Interface Device (HID)
Embedded USB peripherals such as keyboards, mice, HID-class game controllers, and consumer electronics interfaces can run on the PIC24FJ64GA702T-I/SO. The 16 MIPS core handles USB 2.0 full-speed device stack via Microchip's MLA library without external PHY components when running at the correct 48 MHz USB clock domain. The 64 KB ECC Flash accommodates the USB stack plus HID report handlers; 8 KB RAM is sufficient for HID buffers and key debounce state. Five UART-capable EUSART modules, three SPI, and three I2C peripherals provide ample connectivity for LED indicators, sensor readouts, and host communication. The 28-SOIC wide package exposes enough pins for D+/D- USB and multiple GPIO.
Recomendado
Portable Medical / Health Monitor
Portable medical monitors - pulse oximeter front-ends, blood-pressure cuffs, glucose meters, and fitness wearables - benefit from the PIC24FJ64GA702T-I/SO's combination of low-power operation, 12-bit ADC at 200 ksps, and small 28-SOIC footprint. The 12-bit ADC is sufficient for pulse-oximetry photodiode current-to-voltage conversion through a transimpedance front-end; an external 16-bit ADC (such as MCP3421) can be added over I2C if higher resolution is needed. CTMU enables touch-button user input without mechanical switches, reducing ingress protection costs in IP-rated enclosures. The industrial -40C to +85C temperature grade supports cold-storage logistics monitoring. Note: medical device qualification may require additional ISO 13485 documentation beyond the IC datasheet.
Recomendado
LED Lighting Controller
Architectural and decorative LED lighting controllers use the PIC24FJ64GA702T-I/SO for dimming, color mixing, and DMX-512 protocol handling. The 32 MHz core runs DMX-512 receive at 250 kbaud while servicing PWM channels for RGBW fixtures. CTMU-based touch sliders or capacitive proximity sensors replace mechanical dimmers for sealed, water-resistant lighting fixtures. The 12-bit ADC reads ambient light sensors to implement automatic daylight harvesting. ECC Flash improves reliability in high-temperature enclosed luminaires. The 28-SOIC package supports hand-soldering for one-off architectural installations. eXtreme Low Power keeps standby power below 100 mW for ENERGY STAR-rated fixtures.
Recomendado
Consumer Electronics with Display Interface
Mid-volume consumer electronics with character or small graphical LCD displays can use the PIC24FJ64GA702T-I/SO as a low-cost system controller. SPI at up to 16 MHz clock drives OLED or small TFT displays; the EUSART modules handle RS-485 or RS-232 connectivity to host systems. The 64 KB ECC Flash and 8 KB RAM fit bootloaders plus application firmware for appliance HMI boards, smart thermostats, and HVAC zone controllers. The 12-bit ADC reads thermistor or RTD temperature sensors in HVAC applications. eXtreme Low Power modes with RTCC wake-up support battery-backed displays such as e-paper badges. Industrial -40C to +85C temperature range covers most appliance environments.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC24FJ64GA702T-I/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC24FJ64GA702-E/SO | PIC24FJ128GA702T-I/SO | PIC24FJ256GA702T-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (wide) | 28-SOIC (wide) - same | 28-SOIC (wide) - same | 28-SOIC (wide) - same |
| Flash | 64 KB | 64 KB | 128 KB (+100%) | 256 KB (+300%) |
| RAM | 8 KB | 8 KB | 8 KB | 16 KB (+100%) |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| Packaging | Tape & Reel (T) | Tube | Tape & Reel | Tape & Reel |
| Toolchain Compatibility | MPLAB X + XC16 | MPLAB X + XC16 (identical) | MPLAB X + XC16 (identical) | MPLAB X + XC16 (identical) |
Diferenciadores clave
- ECC Flash improves reliability in noisy industrial environments (frente a PIC24FJ32GA102T-I/SO)
- On-chip CTMU enables capacitive touch without external analog ICs (frente a PIC24FJ128GA010T-I/PF)
- Same-package upgrade path to 256 KB Flash (frente a PIC24FJ64GA002-I/SO (older family))
Notas de diseño
The PIC24FJ64GA702T-I/SO requires only a single 2.0-3.6 V supply; no external core voltage regulator is needed. Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of each VDD pin (pin 6 and pin 28) and a 10 uF X5R bulk capacitor on the main supply rail. The internal LDO generates the 1.8 V core voltage; ensure the VDD ramp is monotonic and that VDD does not dwell in the 1.8-2.0 V brown-out band for more than 50 ms during power-up. For battery applications, MCP1700 is recommended as a 3.3 V LDO with 1.6 uA quiescent current.
The 28-SOIC wide body (7.50 mm) provides 1.27 mm pin pitch - hand-solderable with standard 0.5 mm tip. Route traces on inner layers when feasible to reduce EMI. For noise-sensitive ADC readings, dedicate a quiet analog ground plane under the analog-capable pins (RAx, RBx); connect analog and digital grounds at a single point near the VSS pin. The crystal traces on OSCI/OSCO (pins 7/8) should be kept short, symmetric, and surrounded by a grounded guard trace to minimize stray capacitance shifts of 1-2 pF that can pull the crystal off frequency.
Common pitfalls: (1) Configuring an analog pin as digital output while leaving the ADC connected can damage the ADC input - always clear the corresponding ANS bit before configuring direction. (2) The CTMU is sensitive to VDD noise; insufficient decoupling causes touch false-triggers. (3) The PICkit 4 programmer connects to PGEC1/PGED1 (RB6/RB7) - do not populate external pull-ups on these pins without isolating the debugger. (4) The 32 MHz maximum applies with PLL engaged from 8 MHz; setting FOSC bits incorrectly locks the core at 8 MHz and halves throughput. (5) Forgetting to clear the INTCON1 NSTDIS bit when using nested interrupts causes hard-to-debug lockups.
Información de cumplimiento
ROHS3 compliant per ics-embedded.com reseller listing. Not AEC-Q100 qualified - this is an industrial-grade MCU, not automotive. For automotive applications, contact Microchip for AEC-Q100 qualified part numbers in the same family.
