PIC24F08KL401-I/SO - 16-Bit 32MHz XLP MCU | Microchip
MPN: PIC24F08KL401-I/SO ✓ ActivePIC24F08KL401-I/SO Overview
What is a PIC24F microcontroller? A PIC24F is a 16-bit RISC flash microcontroller in Microchip's embedded semiconductor product hierarchy. It combines general-purpose control, on-chip memory, interrupt handling, timers, communication peripherals, and analog conversion in one integrated circuit. The KL family emphasizes nanoWatt XLP technology, allowing the CPU, Flash memory, SRAM, and selected peripherals to operate in low-power modes when the application does not require continuous operation.
The PIC24F08KL401-I/SO provides 8 KB of Flash memory, 1 KB of SRAM, 17 I/O ports, a 10-bit ADC, and communication resources including MSSP support for I2C or SPI and CCP/ECCP peripherals. These features support sensor acquisition, actuator control, display interfaces, and low-power embedded products. Its 3.0 V to 3.6 V operating supply range is suitable for conventional 3.3 V industrial and consumer electronic systems.
The 16-bit architecture offers more arithmetic and addressing capability than an 8-bit MCU while retaining the cost and simplicity associated with Microchip's PIC ecosystem. A 32 MHz operating clock provides deterministic control-loop capability, and the peripheral set allows designers to minimize external discrete components. The MSSP module also consolidates serial-interface functions that would otherwise require separate interface devices.
Typical applications include portable media players, GPS accessories, cell-phone accessories, electronic toys, portable sports equipment, disposable medical testers, dispensers, inhalers, safety systems, small industrial controllers, and low-cost sensor nodes. The manufacturer identifies cost-sensitive consumer and medical products as important application areas for the KL family.
PCB implementation requires the exact 20-pin SOIC footprint and pin assignments published by Microchip. Designers should confirm the device's ADC channels, I/O functions, power pins, and programming connections against the manufacturer datasheet rather than inferring them from the generic PIC24F family. Decoupling, programming access, and unused-pin handling should follow the relevant Microchip guidance.
This product page combines the verified manufacturer and distributor identity, package information, memory configuration, low-power feature set, commercially relevant sourcing details, and engineering guidance. It also separates confirmed drop-in alternatives from package mismatches so engineers can assess replacement risk without redesigning a board unnecessarily.
Drop-in alternatives for PIC24F08KL401-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 PIC24F08KL401-I/SO (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
PIC24F08KL401-E/SO
✅ Drop-InContact for price
View Datasheet →PIC24F16KL401-I/SO
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →PIC24F08KL301-I/SO
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →PIC24F08KL201-I/SO
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →PIC24F08KL101-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24F08KL401-I/SO Maximum Ratings & Electrical Characteristics
| Microcontroller Type | 16-bit RISC flash microcontroller |
| Maximum Clock Speed | 32 MHz |
| Program Memory | 8 KB Flash (2.75K x 24 words) |
| RAM | 1 KB |
| Supply Voltage | 3.0 V to 3.6 V |
| ADC Resolution | 10 bits |
| Number of I/O Ports | 17 |
| Package | 20-pin SOIC |
| Terminal Count | 20 pins |
| Mounting Type | Surface mount |
| Temperature Grade | Industrial |
| Low-Power Technology | nanoWatt XLP |
| Serial Peripheral | MSSP supporting I2C and SPI |
| Capture Compare Peripheral | CCP and ECCP |
| Core Architecture | PIC24F 16-bit |
PIC24F08KL401-I/SO 20-pin soic Pin Configuration Guide
Pin configuration for PIC24F08KL401-I/SO (20-pin soic package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC24F08KL401-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24F08KL401-I/SO is suitable for 6 applications: Portable Consumer Devices, Portable Medical Instruments, Industrial Sensor Nodes, Electronic Toys and Games, Serial Communication Controller, Safety and Security Controls.
Portable Consumer Devices
The PIC24F08KL401-I/SO fits portable accessories that combine low-power operation, serial connectivity, and modest control requirements. Its 16-bit PIC24 core, 32 MHz maximum clock, 8 KB Flash, and 1 KB RAM provide enough capacity for user-interface handling, status control, and communication services without requiring a high-end processor. The MSSP peripheral supports I2C or SPI connections to sensors, memory, or display modules, while nanoWart XLP technology can reduce consumption during idle periods. Compared with a clocked always-on design, the device can be duty-cycled to extend battery life. Actual battery performance depends on the selected sleep mode, wake-up interval, and peripheral loading, so designers should confirm the relevant current specifications in the manufacturer documentation.
Recommended
Portable Medical Instruments
The PIC24F08KL401-I/SO is suitable for cost-sensitive disposable medical testers and compact measurement instruments where a 10-bit ADC, serial buses, and low-power operation are valuable. Its 17 I/O ports can support sensors, indicators, and control signals, while the MSSP module provides an efficient path to I2C or SPI peripherals. The 8 KB Flash and 1 KB RAM support compact control firmware without requiring a large external memory device. In a disposable tester, the MCU can remain mostly inactive between measurements and use XLP modes to limit consumption. Pin assignments, ADC limits, and any medical-product validation requirements must be reviewed independently; component selection alone does not establish regulatory compliance.
Recommended
Industrial Sensor Nodes
The PIC24F08KL401-I/SO can serve as the control core in a small industrial sensor node that must acquire analog measurements and communicate over a serial bus. The 10-bit ADC supports moderate-resolution process or equipment monitoring, while the 17 available I/O ports provide connections for sensors, status indicators, and discrete actuators. Its 32 MHz clock supports responsive control, and the 3.0 V to 3.6 V supply range aligns with conventional 3.3 V embedded systems. The -I ordering option is identified as industrial grade, but the exact temperature limits and long-term availability should be confirmed. For electrically noisy environments, use a protected communications interface and verify grounding, filtering, and isolation in the final board design.
Recommended
Electronic Toys and Games
The PIC24F08KL401-I/SO is appropriate for electronic toys and interactive products where low cost, compactness, and real-time control matter. The 16-bit core can coordinate inputs, sound or light effects, and motor-control outputs, while MSSP provides a connection to external sensors or accessories. The 20-pin SOIC package supports conventional surface-mount assembly, and the 8 KB Flash provides a practical code budget for animation patterns, input handling, and sound effects. A CCP or ECCP peripheral can assist with timing-intensive functions after checking the exact channel and pin assignment in the datasheet. Battery-powered products should use the XLP modes deliberately and confirm average current rather than relying on active-mode performance alone.
Recommended
Serial Communication Controller
The PIC24F08KL401-I/SO can act as a compact protocol bridge or embedded communications controller when a design needs both I2C or SPI connectivity and general digital control. The MSSP module reduces the need for a separate serial transceiver, while the 16-bit core provides enough processing capability to frame data, validate commands, and supervise status signals. Its 32 MHz maximum clock and 1 KB SRAM are suitable for modest protocol stacks and buffering tasks rather than high-throughput networking. The selected SOIC variant preserves compatibility with existing 20-pin SOIC boards. Firmware timing, bus pull-up requirements, logic levels, and the exact MSSP pin mapping must be validated against the manufacturer documentation before production release.
Recommended
Safety and Security Controls
The PIC24F08KL401-I/SO can be evaluated for compact safety and security accessories that need timed inputs, local logic, status indication, and serial communication. The manufacturer identifies safety and security applications among the PIC24F KL family's intended uses. With 8 KB Flash, 1 KB RAM, a 10-bit ADC, and 17 I/O ports, the device can supervise simple sensors and control indicators without a larger MCU package. CCP/ECCP timing resources may support repeatable detection or actuator sequences, subject to the exact peripheral mapping. Security-sensitive or safety-rated use requires a separate review of watchdog behavior, failure states, diagnostics, and applicable certification requirements; the microcontroller's general-purpose status does not by itself qualify the finished system.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F08KL401-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F08KL401-E/SO | PIC24F16KL401-I/SO | PIC24F08KL301-I/SO | PIC24F08KL201-I/SO | PIC24F08KL101-I/SO |
|---|---|---|---|---|---|---|
| Package | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Architecture | 16-bit PIC24 RISC | 16-bit PIC24 RISC | 16-bit PIC24 RISC | 16-bit PIC24 RISC | 16-bit PIC24 RISC | 16-bit PIC24 RISC |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | Industrial (-I) | Extended (-E); limits require verification | Industrial (-I) | Industrial (-I) | Industrial (-I) | Industrial (-I) |
Key Differentiators
- Matches the 20-pin SOIC footprint while retaining the -I industrial ordering option (vs PIC24F08KL401-E/SO)
- Provides a verified 8 KB Flash and 1 KB RAM resource configuration (vs PIC24F08KL401-E/SO)
- Uses the same 20-pin SOIC family format as higher-memory KL401 alternatives (vs PIC24F16KL401-I/SO)
Design Notes
Use the exact 20-pin SOIC footprint associated with PIC24F08KL401 and verify every pad assignment against the current Microchip pinout. The supplied search text confirms the package but does not reproduce signal names, so pin names were intentionally not inferred. Preserve access to programming and debug functions, and avoid placing test pads or tall components where they interfere with the programming connector. Check land pattern, paste stencil, solder mask, and courtyard against the package drawing rather than copying a generic SOIC footprint.
Design the MCU rail for the documented 3.0 V to 3.6 V supply range. Place the required local bypass capacitors close to the device power pins with short ground returns, and keep switching regulators or other noisy sources away from sensitive analog inputs. The exact capacitance, ESR tolerance, startup sequence, and maximum supply-current values are not present in the supplied search data and must be taken from the manufacturer datasheet. Validate brownout behavior and ensure external pull-ups on communication lines do not inject voltage when the MCU is unpowered.
Do not treat a shared package name as proof of a drop-in replacement. PIC24F08KL401-E/SO differs in temperature-grade ordering code, while the KL301, KL201, and KL101 alternatives require verification of memory, peripherals, pin multiplexing, and firmware support. The -I/MQ variant is a 20-pin VQFN and is excluded because it cannot replace a 20-pin SOIC without PCB changes. Before substitution, compare the manufacturer pin diagrams, electrical limits, errata, programming configuration, and application-specific peripheral usage.
Assign analog inputs away from switching nodes and high-speed edges. The 10-bit ADC is likely to be used for sensor-level signals, so route analog inputs over a quiet ground reference, minimize loop area, and use appropriate filtering at the connector. Keep I2C and SPI traces short and observe pull-up placement, input capacitance, and ground-return continuity. If the same MCU pins are multiplexed between analog and digital functions, confirm the required analog configuration before enabling peripherals in firmware.
Compliance Information
The verified snippets identify an industrial-temperature ordering option but do not explicitly provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 declarations. AEC-Q100 is recorded as not applicable because the target is presented as a general-purpose industrial MCU rather than an automotive-qualified variant.