PIC24F32KA304-I/PT - 32KB Flash 16-bit XLP MCU | Microchip
Référence : PIC24F32KA304-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.27 | $5,27 |
| 10 | $4.85 | $48,50 |
| 100 | $4.42 | $442,00 |
| 500 | $3.95 | $1 975,00 |
| 1 000 | $3.55 | $3 550,00 |
PIC24F32KA304-I/PT Présentation
What is a 16-bit microcontroller? A 16-bit MCU is a single-chip computer with a 16-bit data path that offers a balance between 8-bit and 32-bit devices — more computational throughput than 8-bit MCUs at lower cost and power than 32-bit Cortex-M parts. The PIC24F family targets general-purpose embedded control with rich peripherals and ultra-low power operation, sitting in the hierarchy as: 16-bit MCU → PIC24F sub-family → XLP power-optimized series → power management and sensor interface applications.
Key features include a 12-bit ADC with up to 16 channels, a Charge Time Measurement Unit (CTMU) for capacitive touch sensing and precise time measurement, multiple timers, a Real-Time Clock and Calendar (RTCC) that operates in Deep Sleep, and dual watchdogs (DSWDT and WDT) plus a Deep Sleep Brown-Out Reset (DSBOR). The 17 GPIOs support peripherals including UART, SPI, I2C, and PPS (Peripheral Pin Select).
The PIC24F32KA304 uses Microchip's modified Harvard architecture with a 16-bit wide instruction set and 24-bit wide instruction word, enabling compact C code and efficient pointer math. XLP technology reduces sleep current to nanoampere levels, with peripherals like RTCC operating from a dedicated low-power domain while the core is powered down.
Typical applications include IoT sensor nodes, battery-powered medical devices (glucose meters, portable monitors), wearable fitness trackers, remote controls, energy harvesting systems, and low-power wireless sensor networks. The wide 1.8–3.6V supply range supports direct Li-ion and 2xAA battery operation.
When designing with this MCU, allocate careful attention to the Deep Sleep mode configuration and PPS pin mapping. Designers should evaluate the wake-up sources (RTCC, external interrupt, WDT) against the application's latency requirements, since XLP Deep Sleep current is the dominant factor for battery life calculations.
This page synthesizes distributor pricing, drop-in compatible alternatives from the PIC24F family, and practical design notes for low-power embedded systems, providing context not found in the standalone manufacturer datasheet.
Alternatives de remplacement direct pour PIC24F32KA304-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 PIC24F32KA304-I/PT (même facteur de forme et même empreinte) — différant par ADC, Family, Operating Temperature, Program Memory (Flash), EEPROM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC24F32KA304-E/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC24F16KA304-I/PT
✅ Remplacement direct✓ En stock
$4.12 / unité
Voir la fiche technique →PIC24F16KM104-I/PT
✅ Remplacement direct✓ En stock
$2.52 / unité
Voir la fiche technique →PIC24FV32KA304-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC24F32KA304-I/PT Valeurs maximales et caractéristiques électriques
| Core | PIC24F 16-bit RISC |
| Family | PIC® XLP™ 24F |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| RAM | 2 KB |
| EEPROM | 512 bytes |
| Max CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 17 (general-purpose) |
| ADC | 12-bit, up to 16 channels |
| CTMU | Yes (Charge Time Measurement Unit) |
| Timers | 5 x 16-bit / 32-bit |
| Communication | 2x UART, 2x SPI, 2x I2C |
| PPS | Yes (Peripheral Pin Select) |
| RTCC | Yes (runs in Deep Sleep) |
| Deep Sleep Brown-Out Reset | Yes (DSBOR) |
| Deep Sleep Watchdog | Yes (DSWDT) |
| Température de fonctionnement | -40°C to +85°C (Industrial) |
| Boîtier | 44-pin TQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de PIC24F32KA304-I/PT
| Broche 1 | RP5/RB5 — Remappable peripheral / GPIO port B bit 5 |
| Broche 2 | RP6/RB6 — Remappable peripheral / GPIO port B bit 6 |
| Broche 3 | RP7/RB7 — Remappable peripheral / GPIO port B bit 7 |
| Broche 4 | RP8/RB8 — Remappable peripheral / GPIO port B bit 8 |
| Broche 5 | VSS — Ground reference |
| Broche 6 | OSCI/RC12 — Oscillator crystal input / GPIO RC12 |
| Broche 7 | OSCO/RC15 — Oscillator crystal output / GPIO RC15 |
| Broche 8 | VCAP — Internal voltage regulator bypass capacitor |
| Broche 9 | PGEC2/AN6/RP13/RB13 — ICSP clock / ADC input / remappable peripheral / GPIO RB13 |
| Broche 10 | PGED2/AN7/RP14/RB14 — ICSP data / ADC input / remappable peripheral / GPIO RB14 |
| Broche 11 | PGEC1/AN8/RB0 — ICSP clock / ADC input / GPIO RB0 |
| Broche 12 | PGED1/AN9/RB1 — ICSP data / ADC input / GPIO RB1 |
| Broche 13 | AN10/CVREF/RP9/RB9 — ADC input / comparator voltage reference / GPIO RB9 |
| Broche 14 | AN11/RP10/RB10 — ADC input / GPIO RB10 |
| Broche 15 | AN12/RP11/RB11 — ADC input / GPIO RB11 |
| Broche 16 | VDD — Positive supply voltage |
| Broche 17 | ENVREG — Internal voltage regulator enable |
| Broche 18 | AN13/CTMUI/RP0/RC0 — ADC input / CTMU input / GPIO RC0 |
| Broche 19 | AN14/CTMUO/RP1/RC1 — ADC input / CTMU output / GPIO RC1 |
| Broche 20 | AN15/RP2/RC2 — ADC input / GPIO RC2 |
| Broche 21 | RP3/RC3 — Remappable peripheral / GPIO RC3 |
| Broche 22 | RP4/RC4 — Remappable peripheral / GPIO RC4 |
| Broche 23 | VSS — Ground reference |
| Broche 24 | VDD — Positive supply voltage |
| Broche 25 | SOSCI/RC13 — Secondary oscillator crystal input / GPIO RC13 |
| Broche 26 | SOSCO/RC14 — Secondary oscillator crystal output / GPIO RC14 |
| Broche 27 | RTCC/RC5 — RTCC output / GPIO RC5 |
| Broche 28 | RP15/RC6 — Remappable peripheral / GPIO RC6 |
| Broche 29 | RP16/RC7 — Remappable peripheral / GPIO RC7 |
| Broche 30 | RP17/RC8 — Remappable peripheral / GPIO RC8 |
| Broche 31 | RP18/RC9 — Remappable peripheral / GPIO RC9 |
| Broche 32 | RP19/RA0 — Remappable peripheral / GPIO RA0 |
| Broche 33 | RP20/RA1 — Remappable peripheral / GPIO RA1 |
| Broche 34 | RP21/RA2 — Remappable peripheral / GPIO RA2 |
| Broche 35 | RP22/RA3 — Remappable peripheral / GPIO RA3 |
| Broche 36 | MCLR — Master clear reset input (active low) |
| Broche 37 | RA4 — GPIO port A bit 4 |
| Broche 38 | RA5 — GPIO port A bit 5 |
| Broche 39 | VSS — Ground reference |
| Broche 40 | VDD — Positive supply voltage |
| Broche 41 | AN0/RP23/RB2 — ADC input / remappable peripheral / GPIO RB2 |
| Broche 42 | AN1/RP24/RB3 — ADC input / remappable peripheral / GPIO RB3 |
| Broche 43 | AN2/RP25/RB4 — ADC input / remappable peripheral / GPIO RB4 |
| Broche 44 | AN3/RA6 — ADC input / GPIO RA6 |
Applications typiques
PIC24F32KA304-I/PT convient pour 7 applications: Battery-Powered IoT Sensor Node, Wearable Fitness and Health Tracker, Portable Medical Monitoring Device, Wireless Remote Control with Energy Harvesting, Industrial Sensor and Field Transmitter, Smart Home Sensor Hub, Capacitive Touch User Interface.
Battery-Powered IoT Sensor Node
The PIC24F32KA304-I/PT is ideally suited for battery-powered IoT sensor nodes because its XLP technology delivers nanoampere Deep Sleep current (typically <100 nA with RTCC active) while still retaining wake-up sources including RTCC alarms, external interrupts, and watchdog timer. The 12-bit ADC with 16 channels supports multi-sensor interfaces (temperature, humidity, motion), and the CTMU enables precise pulse-based measurements like ultrasonic distance. Operating from 1.8 V to 3.6 V supports direct 2x AA or Li-ion cell connection without a boost regulator. PPS allows flexible GPIO assignment so designers can route SPI/I2C/UART to any pin, simplifying PCB layout in space-constrained sensor modules.
Recommandé
Wearable Fitness and Health Tracker
For wearable fitness trackers, the PIC24F32KA304-I/PT's combination of low power, integrated CTMU for capacitive touch, and 32 KB Flash is well matched. The CTMU can be used for touch-sensitive user interfaces (buttons, sliders) replacing mechanical switches that wear out, while the 12-bit ADC reads photoplethysmography (PPG) sensors for heart rate and SpO2 measurement. The 16 MIPS performance is sufficient for step-counting algorithms and basic BLE protocol stacks when paired with an external radio. The 44-TQFP package is slim enough for wristband form factors, and XLP Deep Sleep modes enable multi-week battery life between charges on a small Li-Po cell.
Recommandé
Portable Medical Monitoring Device
The PIC24F32KA304-I/PT is well suited to portable medical monitors such as pulse oximeters, blood pressure cuffs, and glucose meters where extended battery life and reliable operation are critical. The wide 1.8–3.6 V supply supports direct 2x AA battery operation without boost conversion, reducing BOM cost and PCB area. The 12-bit ADC with 16 channels reads multiple biosensors simultaneously, while the CTMU provides accurate timing for pulse-wave velocity and respiration rate measurements. The industrial -40°C to +85°C operating temperature range meets home and clinical environment requirements. RTCC wake-up capability enables scheduled measurement cycles without continuous CPU supervision, dramatically reducing average power consumption in intermittent-use devices.
Recommandé
Wireless Remote Control with Energy Harvesting
Energy-harvesting wireless remote controls benefit from the PIC24F32KA304-I/PT's nanoampere Deep Sleep current, which directly extends the operating life of kinetic or solar-powered designs. The MCU wakes on GPIO interrupt from a button press, transmits a packet via an SPI-controlled radio, and returns to Deep Sleep in microseconds. With RTCC active in Deep Sleep, the device maintains a real-time clock for time-stamped commands without external RTC IC. The 32 KB Flash holds protocol stacks for BLE, Zigbee, or proprietary sub-GHz radios. Wide supply tolerance (1.8–3.6 V) accommodates variable harvested voltages without complex power conditioning.
Recommandé
Industrial Sensor and Field Transmitter
Industrial 4–20 mA loop-powered field transmitters benefit from the PIC24F32KA304-I/PT's industrial temperature range and ultra-low sleep current, enabling multi-year operation from harvested loop energy. The 12-bit ADC with 16 channels reads bridge pressure sensors, RTDs, and thermocouples via external signal conditioning. The CTMU supports precise resistance measurement for platinum RTDs without dedicated AFE. UART and I2C peripherals connect to HART modems or wireless HART gateways. The 44-TQFP package offers mechanical robustness for harsh environments and is compatible with conformal coating processes typical of industrial sensor assemblies.
Recommandé
Smart Home Sensor Hub
The PIC24F32KA304-I/PT serves as a smart home sensor hub controller for battery-powered devices like door/window contact sensors, leak detectors, and occupancy sensors. The CTMU enables capacitive proximity detection for door open/close sensing without mechanical reed switches, reducing cost and improving reliability. The integrated RTCC schedules periodic wake-ups (every few seconds to minutes) to check sensor state and transmit updates, with average current often below 10 µA. The 17 GPIO supports multiple sensor inputs and outputs in a single device, while PPS enables flexible pin assignment. The wide supply range supports operation from CR2032 coin cells, 2x AAA, or energy-harvested sources.
Recommandé
Capacitive Touch User Interface
The PIC24F32KA304-I/PT's integrated CTMU makes it a strong choice for capacitive touch user interfaces in appliances, automotive interior controls, and consumer electronics. The CTMU generates precisely controlled current pulses that enable time-based capacitance measurement on multiple touch electrodes, supporting sliders, wheels, and matrix keypads without dedicated touch ICs. The 12-bit ADC reads the CTMU discharge timing for high-resolution proximity sensing through glass or plastic overlays. The 16 MIPS CPU runs touch-sensing algorithms with response times under 10 ms while maintaining low average power through XLP sleep between touches. The 44-TQFP package provides ample GPIO for 12–16 touch electrodes plus indicators.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC24F32KA304-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC24F32KA304-I/ML | PIC24F32KA304-E/PT | PIC24F16KA304-I/PT | PIC24FV32KA304-I/PT | PIC24F16KM104-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (10x10 mm) | 44-pin QFN (8x8 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB | 16 KB (-50%) |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Supply 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 | 2.0 V to 5.5 V (wider) | 1.8 V to 3.6 V |
| 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| GPIO Count | 17 | 17 | 17 | 17 | 17 | 17 |
| ADC Resolution | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels |
| XLP Technology | Yes (with RTCC/DSWDT in Deep Sleep) | Yes | Yes | Yes | Yes | Yes |
Principaux différenciateurs
- Drop-in compatible with extended-temperature E variant for industrial applications (vs PIC24F32KA304-E/PT)
- Full 32 KB Flash at industrial temperature range vs 16 KB on KA/KM 16-pin-count variants (vs PIC24F16KA304-I/PT)
- Wider 5V-capable supply option via FV variant in same footprint (vs PIC24FV32KA304-I/PT)
- 44-TQFP for easy prototyping vs QFN's pad-only assembly (vs PIC24F32KA304-I/ML)
Notes de conception
Estimated: At active CPU at 32 MHz, VDD = 3.3 V, the PIC24F32KA304 draws approximately 8–15 mA active current, while Deep Sleep with RTCC active drops below 100 nA. For a typical IoT sensor duty cycle of 0.1% active and 99.9% Deep Sleep, average current is dominated by Deep Sleep; ensure proper RTCC initialization with the 32.768 kHz secondary crystal to enable periodic wake-up without main oscillator. Always enable DSBOR and DSWDT for fail-safe battery operation per the datasheet recommended configuration.
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (multiple VDD pins on this package) and a 10 µF bulk capacitor near the package. The VCAP pin (pin 8) requires a low-ESR 4.7 µF ceramic capacitor to ground for the internal voltage regulator. The 44-TQFP exposed-pad variant is not present on this part; thermal dissipation comes through the package leads and ground pins, so connect multiple VSS pins to a solid ground plane for thermal sinking.
Configuration bits must be programmed correctly to enable the internal voltage regulator (ENVREG tied properly) and disable unused peripherals to minimize sleep current. Do not leave floating analog inputs — unused ADC pins should be configured as digital outputs driving low to prevent shoot-through current. The MCLR pin (pin 36) requires a pull-up resistor (typically 10 kΩ) for normal operation; leaving it floating causes unpredictable resets. PPS configuration must be performed before enabling peripherals, otherwise remapped functions will not work as expected.
For CTMU-based capacitive touch designs, route touch electrodes with short, narrow traces to minimize parasitic capacitance (target < 5 pF). Guard traces around touch electrodes connected to a quiet ground or a driven shield signal reduce false triggers from moisture. Place the MCU within 50 mm of touch electrodes; longer traces degrade touch sensitivity. Keep CTMU traces away from switching power supplies and high-frequency signals to prevent noise-induced false touches. According to Microchip application notes, a 100 nF bypass on each touch electrode helps ESD protection.
The PIC24F32KA304's 16 MIPS performance is sufficient for UART (up to 1 Mbaud), SPI (up to 16 MHz master), and I2C (400 kHz Fast Mode). For longer PCB traces, add 33 Ω series termination on SPI clock and MISO/MOSI lines to dampen reflections. I2C lines require pull-up resistors (typically 2.2 kΩ to 4.7 kΩ depending on bus capacitance and speed) per the I2C specification. Keep analog and digital ground planes separate and join at a single point near the MCU's VSS pins to avoid ground-loop noise coupling into ADC readings.
Informations de conformité
RoHS compliant per Microchip product page and LCSC distributor listing. Lead-free TQFP package. Not AEC-Q100 qualified in standard I/PT variant; choose automotive-grade PIC24F32KA304-E/PT or PIC24F family Q1 variants for automotive use.