PIC24F32KA301-E/SO
PIC24F32KA301-E/SO - 16-bit 32MHz XLP MCU 32KB Flash SOIC-20 | Microchip
The Microchip Technology PIC24F32KA301-E/SO is a 16-bit microcontroller featuring eXtreme Low Power (XLP) consumption, 32KB of Flash program memory, 2KB of RAM, 512 bytes of EEPROM, and a 12-bit ADC with CTMU, housed in a 20-pin SOIC package rated -40C to +125C for the industrial automotive-grade (E) temperature range. The PIC24F32KA301-E/SO is part of the PIC® XLP™ 24F microcontroller series and runs up to 32MHz delivering 16 MIPS, balancing computational throughput with very low active and sleep currents.
A 16-bit microcontroller (MCU) is an embedded processor with a 16-bit data path, sitting between 8-bit MCUs (lower cost, lower performance) and 32-bit MCUs (higher performance, higher cost). 16-bit MCUs occupy the power-management sweet spot for applications requiring real-time deterministic peripherals (12-bit ADC, comparators, timers, RTCC), more code space than 8-bit parts, and lower cost than Cortex-M0+ alternatives. Within the taxonomy, the PIC24F32KA301 belongs to the PIC24 family (16-bit), the PIC24F sub-family (Flash, low-power), the PIC24FKA series (XLP nano-watt), and ultimately the broader MCU -> microcontroller -> embedded processor -> semiconductor hierarchy.
Key features include XLP nanoWatt technology with Deep Sleep mode currents in the nanoamp range, RTCC, DSBOR (Deep Sleep Brown-Out Reset), and DSWDT (Deep Sleep Watchdog Timer) that remain active in Deep Sleep for industry-leading low power performance. The device supports 3V and 5V operation, includes a 12-bit A/D converter with CTMU (Charge Time Measurement Unit) for capacitive touch and precise time measurement, multiple UART/SPI/I2C peripherals, and up to 18 I/O pins. The E suffix indicates the -40C to +125C industrial/automotive temperature range.
Architecturally, the PIC24F32KA301 uses a modified Harvard architecture with separate program and data buses, a 16-bit instruction word, and a wide variety of low-power modes. The XLP technology integrates Deep Sleep peripherals (DSBOR, DSWDT, RTCC) that operate below 1 uA, enabling years of battery life from a single coin cell in sleep-dominant applications such as wireless sensor nodes, utility metering, and IoT edge devices.
Typical applications include battery-powered IoT sensor endpoints, low-energy wireless sensor nodes, medical wearable monitors, portable instrumentation, and remote controls. The wide temperature range also supports industrial sensor interface modules and automotive body electronics.
When designing with the PIC24F32KA301-E/SO, consider the trade-off between pin count (20-SOIC limits I/O to ~18) and feature set. For designs requiring more I/O or larger memory, the PIC24F32KA302/304 family or dsPIC33 alternatives are pin-compatible migration paths within the same footprint family.
This page synthesizes distributor stock and pricing, drop-in alternatives, and practical design considerations not found in the manufacturer datasheet alone, providing an engineering-oriented decision resource for component selection.
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