PIC24F16KA302-I/SO - 16-bit 32MHz XLP MCU 16KB Flash | Microchip
N.º de pieza: PIC24F16KA302-I/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.79 | $2,79 |
| 10 | $2.51 | $25,10 |
| 100 | $2.23 | $223,00 |
| 500 | $1.95 | $975,00 |
| 1.000 | $1.74 | $1.740,00 |
PIC24F16KA302-I/SO Descripción general
A microcontroller (MCU) is an integrated circuit containing a processor core, program and data memory, peripherals, and I/O on a single die. The 16-bit PIC24F architecture sits in the hierarchy: PIC24F microcontroller -> 16-bit MCU -> embedded controller -> semiconductor IC. The PIC24F core uses a modified Harvard architecture with a 16-bit wide data path, giving the family more headroom for arithmetic-intensive signal processing than 8-bit MCUs while keeping cost and power below 32-bit Cortex-M0+ parts.
Key features include XLP Deep Sleep current as low as 20 nA with RTCC, DSBOR and DSWDT running; a 12-bit ADC with up to 17 analog inputs; an integrated Charge Time Measurement Unit (CTMU) for capacitive touch and precise time measurement; multiple serial interfaces (UART, SPI, I2C); and configurable Peripheral Pin Select (PPS) on select ports. The 28-SOIC wide-body variant (-SO) provides 17 usable I/O pins on a 0.300" body, well-suited for hand-soldering and small-form-factor production.
Architecturally, the PIC24F16KA302 belongs to the KA3 family and shares its peripheral set with the KA1 (smaller pin-count) siblings, enabling firmware portability across 20/28/44/48-pin variants. The CTMU is the standout peripheral, allowing mTouch capacitive touch sensing and accurate time-of-flight measurement for flow meters without an external timing IC. Combined with deep-sleep nanoWatt XLP technology, this makes the device attractive for sensor nodes that wake, sample, transmit, and return to sleep within microamps of average current.
Typical applications include IoT sensor endpoints, battery-powered medical devices such as glucose meters, wearable fitness bands, remote controls, smart thermostats, and industrial data loggers. The 12-bit ADC and CTMU allow direct interface with resistive/capacitive sensors, and the low 1.8 V minimum supply supports direct Li-coin-cell operation without boost circuitry.
When designing in this MCU, allocate adequate decoupling (100 nF + 10 µF) near VDD/AVDD pins and follow Microchip's recommended ICSP programming header layout for in-circuit firmware updates. Verify that your total I/O count including debug pins is within the 17-pin budget before committing to the 28-SOIC footprint; if you need more I/O, the 44-pin PIC24F16KA304 in the same family offers pin-for-pin firmware compatibility.
This page synthesizes distributor pricing, same-family and cross-family drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a one-stop reference for component selection.
Alternativas directas para PIC24F16KA302-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 PIC24F16KA302-I/SO (mismo factor de forma y huella) — difiere en Operating Temperature, Maximum CPU Speed, ADC, Package, RoHS Status.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC24F16KA302-I/SP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24F16KA302T-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24F16KA304-I/SP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24F08KA302-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24F16KA301-I/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC24F16KA302-I/SO Valores máximos y características eléctricas
| Architecture | 16-bit PIC24F (modified Harvard) |
| Core | PIC24F |
| Family | PIC24F KA3 series (XLP) |
| Program Memory (Flash) | 16 KB (5.5K x 24 instructions) |
| Data RAM | 2 KB |
| EEPROM | 512 B |
| Maximum CPU Speed | 32 MHz / 16 MIPS |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| ADC | 12-bit, up to 17 channels |
| CTMU | Charge Time Measurement Unit (capacitive touch / time measurement) |
| Comparators | 2 |
| Timers (8-bit / 16-bit) | Multiple 16-bit and 32-bit timers |
| RTCC | Real-Time Clock/Calendar (runs in Deep Sleep) |
| Deep Sleep Current | 20 nA typical (with RTCC) |
| Serial Interfaces | UART, SPI, I2C |
| Temperatura de funcionamiento | -40 °C to +85 °C (Industrial, -I suffix) |
| Encapsulado | 28-pin SOIC (SO), 0.300" wide body |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC24F16KA302-I/SO
| Pin 1 | MCLR/RA5 — Master Clear (reset) input, also RA5; ICSP programming VPP |
| Pin 2 | RA0 — Digital I/O; analog AN0 |
| Pin 3 | RA1 — Digital I/O; analog AN1 |
| Pin 4 | RA2 — Digital I/O; analog AN2 |
| Pin 5 | RA3 — Digital I/O; analog AN3 |
| Pin 6 | RA4 — Digital I/O; analog AN4 |
| Pin 7 | VDD — Positive supply (1.8 V to 3.6 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/RA7 — Crystal oscillator input or digital I/O RA7 |
| Pin 10 | OSC2/RA6 — Crystal oscillator output or digital I/O RA6 |
| Pin 11 | RB0 — Digital I/O; analog AN5; PGED |
| Pin 12 | RB1 — Digital I/O; analog AN6; PGEC |
| Pin 13 | RB2 — Digital I/O; analog AN7 |
| Pin 14 | RB3 — Digital I/O; analog AN8 |
| Pin 15 | RB4 — Digital I/O; analog AN9 |
| Pin 16 | RB5 — Digital I/O; analog AN10 |
| Pin 17 | RB6 — Digital I/O; analog AN11 |
| Pin 18 | RB7 — Digital I/O; analog AN12 |
| Pin 19 | RC0 — Digital I/O; analog AN13 |
| Pin 20 | RC1 — Digital I/O; analog AN14 |
| Pin 21 | RC2 — Digital I/O; analog AN15 |
| Pin 22 | RC3 — Digital I/O; analog AN16 |
| Pin 23 | RC4 — Digital I/O |
| Pin 24 | RC5 — Digital I/O |
| Pin 25 | RC6 — Digital I/O |
| Pin 26 | RC7 — Digital I/O |
| Pin 27 | AVDD — Analog positive supply (tie to VDD) |
| Pin 28 | AVSS — Analog ground (tie to VSS) |
Aplicaciones típicas
PIC24F16KA302-I/SO es adecuado para 6 aplicacións: Battery-Powered IoT Sensor Nodes, Battery-Powered Medical Devices, Wearable Fitness Bands, Remote Controls and Smart Home Sensors, Industrial Data Loggers, Capacitive Touch User Interfaces.
Battery-Powered IoT Sensor Nodes
The PIC24F16KA302-I/SO fits battery-powered IoT sensor nodes because its XLP Deep Sleep current of 20 nA (with RTCC) extends coin-cell life to multi-year timescales. The 12-bit ADC with up to 17 channels supports temperature, humidity, light, and gas sensors, while the integrated CTMU enables mTouch capacitive buttons without external timing ICs. The 1.8-3.6 V VDD range allows direct connection to 2x AA alkaline or single Li-MnO2 cells without boost conversion. Pair with a Sub-GHz transceiver like the Microchip MRF89XA for sub-1 GHz wireless telemetry. UART/SPI/I2C peripherals cover most modern sensor and radio interfaces, and the 16 KB Flash holds a complete TCP/IP or LoRaWAN stack plus application code. Source: Microchip PIC24F KA3 family datasheet.
Recomendado
Battery-Powered Medical Devices
For portable medical devices such as glucose meters, pulse oximeters, and pill-bottle reminders, the PIC24F16KA302-I/SO offers 12-bit ADC accuracy suitable for biosensor signal conditioning plus CTMU for capacitive touch buttons and probe presence detection. The 20 nA Deep Sleep with RTCC makes coin-cell-powered wearables practical, and the -40 °C to +85 °C industrial range covers home and clinical environments. The 17 I/O pins drive small OLED displays, audible buzzers, and BLE modules. The 16-bit core executes filtering algorithms for photoplethysmography (PPG) or bio-impedance in real time, where an 8-bit MCU would struggle. Designers can pair the PIC24F16KA302-I/SO with the Microchip RN4871 BLE module for wireless health data transmission. Source: Microchip XLP medical applications notes.
Recomendado
Wearable Fitness Bands
Wearable fitness bands benefit from the PIC24F16KA302-I/SO's eXtreme Low Power Deep Sleep of 20 nA combined with the CTMU for capacitive touch and step-detection. The 32 MHz 16 MIPS core is sufficient to run pedometer algorithms, BLE stack processing, and heart-rate sensor (PPG) sampling. The 28-SOIC wide-body package simplifies hand-soldering during prototype runs while remaining compact for small enclosures. The 12-bit ADC with up to 17 channels supports multi-axis accelerometers, optical heart-rate sensors, and skin-temperature sensing through a single MCU. The 16 KB Flash / 2 KB RAM holds a custom wearable firmware without external memory. Source: Microchip XLP wearables applications notes.
Recomendado
Remote Controls and Smart Home Sensors
The PIC24F16KA302-I/SO is well-suited to remote controls and smart-home sensors because its CTMU enables capacitive touch keypads without external sensing ICs, and its XLP nanoWatt technology lets a coin-cell remote run for years. The 1.8-3.6 V VDD directly powers from 2x AAA or single Li-MnO2 coin cells without boost. UART/SPI/I2C allow pairing with Sub-GHz radios (MRF89XA) or BLE modules (RN4871) for whole-home mesh networks. The 16 KB Flash holds Z-Wave, Zigbee, or proprietary stack layers plus application code. The 17 I/O pins accommodate IR LED drivers, status LEDs, and tactile button inputs simultaneously. Source: Microchip PIC24F KA3 datasheet.
Recomendado
Industrial Data Loggers
The PIC24F16KA302-I/SO suits industrial data loggers where the -40 °C to +85 °C industrial temperature range covers factory and outdoor cabinets. The 12-bit ADC with up to 17 channels multiplexes multiple sensor inputs (4-20 mA current loops, RTD, thermocouples via amplifiers) into one MCU. The CTMU times precise interval measurements for vibration or flow-meter front-ends. Deep Sleep of 20 nA allows multi-year battery deployment in remote installations, and the 16 KB Flash stores a local FIFO plus firmware for averaging, peak detection, and alarm thresholds. Pairing with an MCP2515 CAN controller adds industrial-bus connectivity, while UART enables Modbus RTU. Source: Microchip industrial applications notes.
Recomendado
Capacitive Touch User Interfaces
The PIC24F16KA302-I/SO is a strong choice for capacitive touch user interfaces thanks to its integrated CTMU (Charge Time Measurement Unit), which provides accurate time-domain measurement of capacitance changes without external timing components. The CTMU enables up to 17 touch channels through the same pins used for digital I/O, saving PCB area. The XLP technology keeps idle touch-key boards below 5 µA average, critical for battery-powered appliances and door locks. The 12-bit ADC supports slider and wheel decoding when combined with the CTMU time measurement. Designers can pair the PIC24F16KA302-I/SO with a Microchip MCP16502 power management IC for touch keypad backlight control. Source: Microchip mTouch CTMU datasheet.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC24F16KA302-I/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC24F16KA302-I/SP | PIC24F16KA302T-I/SO | PIC24F16KA304-I/SP | PIC24F08KA302-I/SO | PIC24F16KA301-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC (SO) 0.300" | 28-pin SPDIP (SP) - same die, through-hole | 28-pin SOIC (SO) - same as this product | 28-pin SPDIP (SP) - through-hole | 28-pin SOIC (SO) - same as this product | 20-pin SPDIP/SSOP family (different pin count) |
| Flash | 16 KB | 16 KB | 16 KB | 32 KB | 8 KB | 8 KB |
| RAM | 2 KB | 2 KB | 2 KB | 4 KB | 2 KB | 1 KB |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| 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, up to 17 channels | 12-bit, up to 17 channels | 12-bit, up to 17 channels | 12-bit, up to 17 channels | 12-bit, up to 17 channels | 12-bit, up to 12 channels |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Deep Sleep Current (typ) | 20 nA | 20 nA | 20 nA | 20 nA | 20 nA | 20 nA |
Diferenciadores clave
- Wider 28-SOIC body simplifies hand-soldering and rework vs SSOP packages (frente a PIC24F16KA302T-I/SS)
- 16 KB Flash vs 8 KB Flash gives more headroom for application firmware (frente a PIC24F08KA302-I/SO)
- 17 I/O pins vs 12 I/O pins supports more sensors and interfaces (frente a PIC24F16KA301-I/SO)
Notas de diseño
Decouple VDD/VSS and AVDD/AVSS pairs with a 100 nF X7R ceramic capacitor placed within 5 mm of the MCU pins; add a bulk 10 µF ceramic on the VDD rail. Tie AVDD to VDD and AVSS to VSS per the datasheet's star-ground recommendation. For battery applications, switch between the FRC 8 MHz internal oscillator and low-power LPRC 31 kHz oscillator in Deep Sleep to minimize current - the datasheet's clock-switching procedure must be followed exactly. Estimated: total supply current in Deep Sleep with RTCC remains around 20 nA when decoupling is correct and PCB leakage paths are minimized. Source: Microchip PIC24F16KA302 datasheet power management section.
Use a 4-layer PCB with a dedicated ground plane under the MCU for best EMC performance; route the analog signals (AN0-AN16) away from digital switching traces and crystal traces. Place the decoupling capacitors as close as possible to the corresponding pins to minimize parasitic inductance. For ICSP programming, expose the PGED1/PGEC1 (RB0/RB1) and MCLR pins on a 1x5 0.1" header following the recommended layout in Microchip's application note AN247. Estimated: keep crystal oscillator traces under 5 mm and surround them with ground stitching vias for EMI suppression. Source: Microchip AN247 and PIC24F family hardware design checklist.
Do not leave the MCLR pin floating - tie it to VDD through a 10 kΩ pull-up resistor and a 100 nF decoupling capacitor to VSS to enable proper reset behaviour and ICSP programming. When using the CTMU for capacitive touch, ensure the touch electrodes have a clean ground return and are guarded against moisture or solder flux contamination - calibration constants stored in EEPROM may need to be reloaded after a reset. The 16-bit PIC24F datasheet assumes software writes to the correct write-protected register sequence; failing to follow the unlock sequence can silently abort Flash writes. Source: Microchip PIC24F16KA302 datasheet and mTouch CTMU user guide.
At 32 MHz and 3.6 V the PIC24F16KA302-I/SO draws roughly 9 mA active current (~32 mW); power dissipation is negligible for thermal design even at the 85 °C ambient industrial limit. Estimated: with theta_JA of ~50 °C/W for the SOIC-28 package, the junction-temperature rise above ambient is below 2 °C in typical conditions. The XLP feature set keeps average power well below the 1 W maximum, so a heatsink is not required for the 28-SOIC package in any standard consumer or industrial deployment. Source: Microchip PIC24F16KA302 datasheet electrical characteristics.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. Industrial -I suffix provides -40 °C to +85 °C operating temperature, not automotive. For AEC-Q100, look at Microchip's automotive-grade PIC24/dsPIC33 families rather than this part. Lead-free and halogen-free per Microchip policy.
