PIC24FV32KA301-I/SO - 16-bit 32MHz 32KB XLP MCU | Microchip
MPN: PIC24FV32KA301-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.72 | $272.00 |
| 500 | $2.43 | $1,215.00 |
| 1,000 | $2.16 | $2,160.00 |
PIC24FV32KA301-I/SO Overview
An XLP (eXtreme Low Power) microcontroller is a class of MCU specifically engineered to minimize active and sleep-mode current consumption for battery-powered and energy-harvesting applications. The PIC24FV32KA3xx family adds peripherals such as Deep Sleep Brown-Out Reset (DSBOR), Deep Sleep Watchdog Timer (DSWDT), and a Real-Time Clock Calendar (RTCC) that continue to operate while the CPU is in Deep Sleep, delivering industry-leading nanoamp-range standby currents that extend coin-cell and lithium battery life by months or years.
Key features include 32KB (11K x 24 instructions) Flash program memory, 2KB SRAM, 512 bytes EEPROM, an integrated 12-bit ADC with up to 16 input channels, a CTMU (Charge Time Measurement Unit) for capacitive touch sensing, and multiple 16-bit timers. The device provides rich connectivity through UART, SPI, I2C, and PMP interfaces, and supports 5V tolerant I/O. Peripherals continue to run in Deep Sleep, drawing nanoamp-level currents, which is the primary differentiator versus general-purpose PIC24F parts.
The PIC24FV32KA301 architecture is a 16-bit modified Harvard design with a hardware multiply/divide unit and a 24-bit instruction word, achieving 16 MIPS performance at 32 MHz. The 12-bit ADC, CTMU, RTCC, and comparator modules are tightly integrated with the XLP power-management unit, allowing autonomous sensor sampling and timekeeping without waking the CPU, which is critical for always-on IoT edge nodes.
Typical applications include battery-powered IoT devices, wearable health and fitness electronics, smart sensors with capacitive touch, home automation controllers, industrial remote monitoring nodes, and consumer handheld products where Deep Sleep mode is used for the majority of the operational duty cycle. The 5V tolerance also enables direct interfacing to legacy 5V peripherals without level shifters.
When designing with this device, always place 0.1 uF decoupling capacitors adjacent to each VDD pin and a bulk capacitor on the regulator output. Follow Microchip's MPLAB X IDE and the PIC24F peripheral library examples for ADC calibration and Deep Sleep mode entry/exit sequences to achieve the lowest quiescent current.
This page synthesizes distributor stock data, parametric drop-in alternatives, and practical XLP design notes not available in the manufacturer datasheet alone, enabling engineers to evaluate the PIC24FV32KA301-I/SO for next-generation low-power embedded designs.
Drop-in alternatives for PIC24FV32KA301-I/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC24FV32KA301-I/SO (same form factor and footprint) — differing in ADC, Operating Temperature, Maximum CPU Speed, Package, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FV32KA301-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FV32KA301-E/SO
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →PIC24FV32KA301-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FV32KA302-I/SO
✅ Drop-In✓ In Stock
$2.14 / Unit
View Datasheet →PIC24FV16KA301-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FV32KA301-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit modified Harvard |
| Family | PIC24FV32KA3xx (XLP) |
| Program Memory (Flash) | 32 KB (11K x 24 instructions) |
| Data SRAM | 2KB |
| EEPROM | 512 bytes |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.5V / 3.3V / 5V |
| I/O Pins | Up to 16 (5V tolerant) |
| ADC | 12-bit, up to 16 channels |
| CTMU | Yes (Charge Time Measurement Unit) |
| Timers | Multiple 16-bit timers |
| Communication | UART, SPI, I2C, PMP |
| Deep Sleep Peripherals | DSBOR, DSWDT, RTCC |
| Package | 20-SOIC (0.295 inch / 7.50 mm body) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, 'I' suffix) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24FV32KA301-I/SO Pin Configuration
| Pin 1 | MCLR/VPP/RE3 — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0 — Digital I/O / analog input AN0 |
| Pin 3 | RA1 — Digital I/O / analog input AN1 |
| Pin 4 | RB0 — Digital I/O / programming PGD |
| Pin 5 | RB1 — Digital I/O / programming PGC |
| Pin 6 | RB2 — Digital I/O / analog input AN2 |
| Pin 7 | RB3 — Digital I/O / analog input AN3 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Crystal oscillator input / external clock |
| Pin 10 | OSC2/CLKO — Crystal oscillator output |
| Pin 11 | RB4 — Digital I/O / analog input AN4 |
| Pin 12 | RB5 — Digital I/O / analog input AN5 |
| Pin 13 | RB6 — Digital I/O / analog input AN6 |
| Pin 14 | RB7 — Digital I/O / analog input AN7 |
| Pin 15 | RA2 — Digital I/O / analog input AN8 |
| Pin 16 | RA3 — Digital I/O / analog input AN9 |
| Pin 17 | RA4 — Digital I/O / analog input AN10 |
| Pin 18 | RA5 — Digital I/O / analog input AN11 |
| Pin 19 | VDD — Positive power supply |
| Pin 20 | VSS — Ground reference |
Typical Applications
PIC24FV32KA301-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health and Fitness Device, Smart Home Touch Control Panel, Industrial Remote Monitoring Node, Consumer Handheld Product, Capacitive Touch User Interface.
Battery-Powered IoT Sensor Node
The PIC24FV32KA301-I/SO is well matched to battery-powered IoT sensor nodes because its XLP architecture with DSBOR, DSWDT, and RTCC continues to operate in Deep Sleep at nanoamp-level currents, while the integrated 12-bit ADC and CTMU handle analog and capacitive sensor reading autonomously. The 32KB Flash accommodates small BLE/Zigbee stacks or LoRa drivers, and the 2KB SRAM provides headroom for sensor data buffering. With 2.5V to 5V operation the MCU can run directly from a single CR2032 coin cell (with boost) or a 3.3V regulated Li-ion supply. Place a 0.1uF decoupling cap adjacent to VDD and use MPLAB X IDE low-power application libraries to enter Deep Sleep between sensor reads, extending battery life by months versus general-purpose PIC24F parts.
Recommended
Wearable Health and Fitness Device
Wearable health and fitness devices benefit from the PIC24FV32KA301-I/SO's Deep Sleep RTCC that keeps real-time clock accuracy while the CPU is asleep, plus the CTMU for touch-based user interfaces and the 12-bit ADC for heart-rate or temperature sensor signal conditioning. The 32KB Flash accommodates BLE stack fragments, sensor-fusion firmware, and OTA bootloader stubs needed for wristband-class products. The 5V-tolerant I/O simplifies interfacing to legacy analog front-end ICs, and the 20-SOIC wide-body package is easy to assemble on flexible and rigid PCBs typical of wearables. Use MPLAB X IDE with the PIC24F peripheral library for power optimization and follow Microchip AN1416 for low-power touch sensing.
Recommended
Smart Home Touch Control Panel
Smart home touch control panels benefit from the PIC24FV32KA301-I/SO's CTMU peripheral, which supports reliable capacitive touch sensing for buttons, sliders, and proximity wake functions on wall-mounted panels. The 32KB Flash stores touch-sensing libraries and connectivity stacks (Zigbee, Thread, or Matter bridges), while the 2KB SRAM handles transient touch-event buffers. The 5V-tolerant I/O allows direct interfacing to LED drivers and triac control lines. Its 20-SOIC wide-body package is well suited to the through-hole-friendly board outlines common in retrofit smart-switch products. Use Microchip's mTouch capacitive sensing design guides and follow AN1171 for robust touch UI performance.
Recommended
Industrial Remote Monitoring Node
Industrial remote monitoring nodes rely on the PIC24FV32KA301-I/SO's industrial -40C to +85C temperature range and Deep Sleep RTCC for timestamped logging over years of battery life. The 12-bit ADC with up to 16 input channels accepts signals from pressure, flow, temperature, and 4-20mA current-loop transducers common in process plants. The 32KB Flash holds Modbus RTU or proprietary protocol stacks, while 2KB SRAM accommodates telemetry buffers before wireless transmission. Its wide 2.5V to 5V operating range supports both 3.3V regulated and 5V battery-powered field deployments. Use Microchip application note AN1345 for industrial sensor conditioning and follow IEC 61000 ESD layout practices.
Recommended
Consumer Handheld Product
Consumer handheld products like remote controls, gaming peripherals, and personal care devices gain long battery life from the PIC24FV32KA301-I/SO's XLP Deep Sleep mode and 5V tolerance for direct alkaline-battery operation. The 32KB Flash supports user-interface state machines and simple wireless protocols (BLE, sub-GHz RF), while the 12-bit ADC handles battery monitoring and analog sensors. The 20-SOIC wide-body package accommodates both automated and hand-soldered assembly typical of consumer-electronics production lines. Use Microchip's low-power design checklist (AN1416) and follow USB-to-UART bridge recommendations for field firmware updates.
Recommended
Capacitive Touch User Interface
Capacitive touch interfaces benefit from the PIC24FV32KA301-I/SO's dedicated CTMU hardware block, which provides hardware-timed charge measurement for reliable touch detection across buttons, wheels, and sliders. The 32KB Flash supports Microchip's mTouch libraries, while the 5V-tolerant I/O simplifies interfacing to LED indicators and piezo buzzers. The integrated 12-bit ADC can monitor supply voltage for brown-out detection, and the RTCC keeps timing data during Deep Sleep periods between user interactions. The 20-SOIC wide-body package is ideal for both hand-soldered prototypes and automated SMT production. Follow Microchip application note AN1171 and the mTouch design guide for PCB layout and sensor-pattern recommendations.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FV32KA301-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FV32KA301-I/SS | PIC24FV32KA301-E/SO | PIC24FV32KA301-I/P | PIC24FV32KA302-I/SO | PIC24FV16KA301-I/SO |
|---|---|---|---|---|---|---|
| Package | 20-SOIC (7.50mm body) | 20-SSOP - same pitch | 20-SOIC - same | 20-PDIP (through-hole) | 20-SOIC - same | 20-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Maximum 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 Voltage | 2.5V / 3.3V / 5V | 2.5V / 3.3V / 5V | 2.5V / 3.3V / 5V | 2.5V / 3.3V / 5V | 2.5V / 3.3V / 5V | 2.5V / 3.3V / 5V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| ADC | 12-bit, up to 16 channels | 12-bit, up to 16 channels | 12-bit, up to 16 channels | 12-bit, up to 16 channels | 12-bit, up to 16 channels | 12-bit, up to 16 channels |
| XLP Deep Sleep Peripherals | DSBOR, DSWDT, RTCC | DSBOR, DSWDT, RTCC | DSBOR, DSWDT, RTCC | DSBOR, DSWDT, RTCC | DSBOR, DSWDT, RTCC | DSBOR, DSWDT, RTCC |
Key Differentiators
- Wider operating voltage than PIC24F32KA301 (vs PIC24F32KA301)
- 20-SOIC wide-body vs narrower 20-SSOP (vs PIC24FV32KA301-I/SS)
- Industrial vs extended temperature grade (vs PIC24FV32KA301-E/SO)
Design Notes
To achieve the lowest Deep Sleep current on the PIC24FV32KA301-I/SO, disable unused peripherals via PMD registers before entering Sleep, and use the DSBOR and DSWDT instead of the regular BOR/WDT whenever Deep Sleep is required. Estimated: typical Deep Sleep current at 25C is in the nanoamp range when the RTCC is the only active peripheral; this was not measured by us and should be confirmed against the Microchip datasheet DS30009995 typical characteristics table for the specific operating voltage.
Place a 0.1 uF decoupling capacitor between VDD (pin 19) and VSS (pin 20) as close as possible to the package, ideally within 3 mm of the pins. Add a bulk capacitor (1-10 uF) on the regulator output near the MCU. Keep the OSC1/OSC2 traces short and shield them from digital switching lines to avoid jitter on the crystal or external clock. Follow Microchip's PCB layout guidelines in the PIC24F KA3xx family datasheet section on oscillator design.
The MCLR pin (1) must have a pull-up to VDD for the MCU to operate; leaving it floating prevents startup. The PGC and PGD pins (RB1, RB0) used for ICSP must not be pulled low at reset or programming will fail. When migrating from PIC24F32KA301 (3.3V only) to PIC24FV32KA301 (2.5V to 5V), verify that any external 5V peripherals do not back-power the I/O pins above VDD + 0.3V. Use the MPLAB X IDE configuration bits to set the oscillator, watchdog, and code-protection options correctly before programming.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified; for automotive applications select the AEC-Q100-qualified PIC24F KA3xx variants if available. Lead-free reflow-compatible.
