PIC24F32KA301-I/SO - 16-bit 32MHz 32KB Flash XLP MCU | Microchip
N.º da peça: PIC24F32KA301-I/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.45 | $3,45 |
| 10 | $3.1 | $31,00 |
| 100 | $2.74 | $274,00 |
| 500 | $2.45 | $1.225,00 |
| 1.000 | $2.18 | $2.180,00 |
PIC24F32KA301-I/SO Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), non-volatile data storage (EEPROM), and a rich set of peripherals (ADC, timers, communication controllers) into one package. The PIC24F belongs to the modified Harvard RISC architecture family from Microchip and sits between 8-bit PIC16/PIC18 devices and the more powerful dsPIC33/PIC32 lines, offering 16-bit data paths, single-cycle multiply, and a deterministic instruction set optimized for low-power embedded control.
Key features include nanoWatt XLP technology with Deep Sleep currents drawn in the microampere range, a 12-bit A/D converter with multiple channels, multiple serial interfaces (UART, SPI, I2C), and a Charge Time Measurement Unit for capacitive touch sensing and precise time-of-flight measurements. The wide 1.8V to 3.6V VDD range supports both 3V lithium and 2x AA battery chemistries without level shifters, and the internal 8 MHz and 32 kHz oscillators reduce external component count. The 20-pin SOIC footprint offers the largest I/O count in this family while remaining hand-solderable for prototypes and low-volume production.
The architecture combines a 16-bit modified Harvard RISC core with a 24-bit instruction word, 17 x 17-bit single-cycle hardware multiplier, and a 32-bit barrel shifter, delivering 16 MIPS throughput while drawing only microampere-level active current. The Deep Sleep state retains RAM and runs the RTCC, DSBOR and DSWDT, allowing wake-up intervals of seconds to months on a single coin cell. The CTMU provides a precise current source for capacitive touch and resistive sensing without an external analog front end.
Typical applications include blood pressure monitors, fitness wearables, remote sensor nodes, smart thermostats, IoT endpoints, and any portable medical or industrial sensor. The combination of eXtreme Low Power, 32 KB Flash, 12-bit ADC, and CTMU makes it particularly well suited to capacitive-touch user interfaces and battery-powered measurement products. The 20-pin SOIC package allows easy hand-soldering and rework, simplifying prototyping and field-repair scenarios.
When designing with this device, choose low-Iq LDO or use direct battery connection, route the analog AVdd/AVss pins with a star ground topology, and place the CTMU current-source traces away from switching nodes to preserve touch sensitivity. For longest battery life, prefer Deep Sleep over Idle and gate peripherals individually using PMD registers rather than software polling loops.
This page synthesizes distributor pricing, same-family Microchip drop-in alternatives, and practical low-power design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC24F32KA301-I/SO — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC24F32KA301-I/SO (mesmo formato e footprint) — diferindo em Package, ADC, Core Architecture, Operating Temperature, Mounting Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC24F32KA301-I/SS
✅ Drop-In✓ Em estoque
$2.19 / unidade
Ver ficha técnica →PIC24F32KA301-I/P
✅ Drop-In✓ Em estoque
$2.72 / unidade
Ver ficha técnica →PIC24F32KA301T-I/SO
✅ Drop-In✓ Em estoque
$2.18 / unidade
Ver ficha técnica →PIC24F32KA301-E/SO
✅ Drop-In✓ Em estoque
$2.61 / unidade
Ver ficha técnica →PIC24F32KA301-H/SO
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC24F32KA302-I/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC24F32KA301-I/SO Classificações máximas e características elétricas
| Series | PIC24F XLP |
| Core Processor | PIC |
| Core Size | 16-bit |
| Program Memory Size | 32 KB (11K x 24 words) |
| RAM Size | 2 KB |
| EEPROM Size | 512 B |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| Encapsulamento | 20-SOIC (300 mil) |
| Tipo de montagem | Surface Mount |
| Number of I/O Pins | 18 |
| ADC | 12-bit, multiple channels |
| Peripherals | CTMU, DSBOR, DSWDT, RTCC |
| Connectivity | UART, SPI, I2C |
| Operating Temperature (I grade) | -40 C to +85 C |
| Program Memory Type | FLASH |
| Low-Power Technology | nanoWatt XLP, Deep Sleep mode |
| Status RoHS | Compliant |
Configuração de pinos do PIC24F32KA301-I/SO
| Pino 1 | RA0 — Digital I/O / analog input AN0 / CVREF- |
| Pino 2 | RA1 — Digital I/O / analog input AN1 / CVREF+ |
| Pino 3 | RA2 — Digital I/O / analog input AN2 / VREF- |
| Pino 4 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| Pino 5 | RA4 — Digital I/O / analog input AN4 / SOSCO |
| Pino 6 | RA5 — Digital I/O / analog input AN5 / SOSCI |
| Pino 7 | RA6 — Digital I/O / analog input AN6 / OSC1 |
| Pino 8 | RA7 — Digital I/O / analog input AN7 / OSC2 |
| Pino 9 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pino 10 | VSS — Ground reference |
| Pino 11 | RB0 — Digital I/O / analog input AN8 / SDA2 |
| Pino 12 | RB1 — Digital I/O / analog input AN9 / SCL2 |
| Pino 13 | RB2 — Digital I/O / analog input AN10 |
| Pino 14 | RB3 — Digital I/O / analog input AN11 |
| Pino 15 | RB4 — Digital I/O / analog input AN12 |
| Pino 16 | RB5 — Digital I/O / analog input AN13 |
| Pino 17 | RB6 — Digital I/O / ICSPCLK |
| Pino 18 | RB7 — Digital I/O / ICSPDAT |
| Pino 19 | MCLR — Master Clear (reset) input, active low |
| Pino 20 | AVSS — Analog ground reference |
Aplicações típicas
PIC24F32KA301-I/SO é adequado para 6 aplicaçãos: Battery-Powered Blood Pressure Monitor, Wearable Fitness and Health Tracker, Capacitive Touch User Interface, Remote Wireless Sensor Node, Smart Thermostat and Building Control, IoT Edge Sensor with Diagnostic Logging.
Battery-Powered Blood Pressure Monitor
The PIC24F32KA301-I/SO is a strong fit for blood pressure monitor designs because its nanoWatt XLP Deep Sleep current in the microampere range extends battery life across weeks of intermittent use. With 32 KB of Flash, firmware can host the cuff-inflation algorithm, EEPROM stores calibration coefficients, and the 12-bit ADC samples the pressure sensor directly. The CTMU provides a precision current source for the optional capacitive user-interface buttons. Operating from 1.8-3.6V allows direct connection to two AA cells or a 3V lithium primary without a boost regulator.
Recomendado
Wearable Fitness and Health Tracker
For wearable fitness devices, the PIC24F32KA301-I/SO offers an attractive balance of 32 KB Flash, 2 KB SRAM, and a deep-sleep current drawn in microampere range that allows multi-month runtime on a CR2032 coin cell. The 12-bit ADC with multiple channels can read heart-rate, skin-temperature, and motion-sensor analog signals, while the CTMU handles capacitive touch buttons for user input without an external analog front end. The 20-SOIC package fits inside slim wearable enclosures and supports both 3V lithium and 1.5V AA chemistries across the 1.8-3.6V operating range.
Recomendado
Capacitive Touch User Interface
The PIC24F32KA301-I/SO's integrated CTMU (Charge Time Measurement Unit) provides a precision constant current source that enables reliable capacitive touch sensing without external analog components. This makes the KA301 well suited to white-goods front panels, appliance control boards, and industrial HMI keypads. Deep Sleep wake-on-touch operation draws microampere-level standby current, enabling sealed-keypad designs that meet IEC 60730 Class B safety requirements. The 32 KB Flash hosts up to a dozen touch buttons plus slider/wheel firmware in a single MCU.
Recomendado
Remote Wireless Sensor Node
For LoRaWAN or sub-GHz wireless sensor nodes, the PIC24F32KA301-I/SO provides the 32 KB Flash and 2 KB SRAM needed for an embedded sensor stack plus a small RF driver, while its nanoWatt XLP Deep Sleep current keeps idle draw in the microampere range. The 12-bit ADC can digitize temperature, humidity, or 4-20 mA process signals directly, and the RTCC in Deep Sleep provides accurate wake-up intervals measured in seconds to months. With a 1.8-3.6V operating range, the device can run directly from a primary lithium cell or two alkaline AA cells.
Recomendado
Smart Thermostat and Building Control
The PIC24F32KA301-I/SO suits smart thermostat and HVAC actuator boards where Deep Sleep mode preserves RTCC function across mains outages and the 12-bit ADC reads multiple temperature sensors with 0.1 C resolution. The CTMU implements reliable capacitive front-panel controls without analog front-end ICs, while 2 KB of EEPROM in the device family stores setpoints and schedules that survive power cycling. The wide 1.8-3.6V supply range tolerates 3.3V regulated rails common in building-automation backplanes.
Recomendado
IoT Edge Sensor with Diagnostic Logging
For IoT edge sensors that log diagnostic events to non-volatile memory, the PIC24F32KA301-I/SO offers 512 B of EEPROM directly on-chip, eliminating an external EEPROM and reducing board BOM. The 32 KB Flash hosts a small TCP/IP or MQTT stack plus the sensor-processing algorithm, while the nanoWatt XLP technology delivers microampere-range Deep Sleep current between measurement intervals. The 12-bit ADC and CTMU handle a wide range of analog sensor types and capacitive user inputs from a single chip.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC24F32KA301-I/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC24F32KA301-I/SS | PIC24F32KA301-I/P | PIC24F32KA301T-I/SO | PIC24F32KA301-E/SO | PIC24F32KA302-I/SO |
|---|---|---|---|---|---|---|
| Package | 20-SOIC (300 mil) | 20-SSOP | 20-PDIP | 20-SOIC (300 mil) - tape and reel | 20-SOIC (300 mil) | 28-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 32 KB Flash | 32 KB Flash | 32 KB Flash | 32 KB Flash | 32 KB Flash | 32 KB Flash |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Temperature Grade | I grade (-40C to +85C) | I grade (-40C to +85C) | I grade (-40C to +85C) | I grade (-40C to +85C) | E grade (-40C to +125C) | I grade (-40C to +85C) |
| Peripherals | CTMU, DSBOR, DSWDT, RTCC, 12-bit ADC | Same | Same | Same | Same | Same peripherals, more I/O |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
Principais diferenciais
- Integrated CTMU enables capacitive touch without external analog front end (vs PIC24F16KA101-I/SO)
- Larger Flash and EEPROM over the KA101 family (vs PIC24F16KA101-I/SO)
- Higher temperature grade option in same SOIC footprint (vs PIC24F32KA301-E/SO)
Notas de projeto
Estimated battery life for a typical application using Deep Sleep mode with periodic RTCC wake-up: average current consumption can be modeled as Iavg = (Iactive * Ton + Ideep * Tdeep) / (Ton + Tdeep). For a 1-second measurement duty cycle, with Iactive = 1 mA, Ton = 10 ms, Ideep = 1 uA (typical for KA301 with RTCC running), Iavg ~= 11 uA. From a CR2032 cell with 220 mAh capacity, this yields approximately 20000 hours (about 2.3 years) of theoretical battery life, assuming no self-discharge. Use the PMD (Peripheral Module Disable) registers to gate unused peripherals rather than leaving them active in idle loops.
Use star-ground topology with separate analog (AVSS) and digital (VSS) ground planes connected only at the MCU. Place a 0.1 uF decoupling capacitor within 5 mm of VDD pin 9 and a 10 uF bulk capacitor on the analog supply rail. For CTMU capacitive touch applications, route CTMU traces as short, narrow, and well-guarded traces away from switching nodes. Avoid placing the SOIC near switching converter inductors to minimize touch false-triggers. The 300-mil SOIC body is hand-solderable with a standard fine-tip iron.
Do not exceed the maximum VDD of 3.6V or drop below 1.8V under any load transient, including RF injection or relay kickback. Configure the unused I/O pins as digital outputs driving low to minimize leakage. When migrating from /SO to /SS (SSOP) or /P (PDIP), remember the ICSP programming pinout changes pin-number-wise, not signal-wise; a production programmer with a SOIC socket is recommended for /SO variants. Use the CONFIG3 register to enable the RTCC during Deep Sleep if persistent timekeeping is required across wake events.
Informações de conformidade
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose E-grade or automotive-graded Microchip part variants for AEC-Q100 requirements.
