PIC24F16KL402-E/MQ - 16-Bit 32MHz 16KB MCU | Microchip Technology
MPN: PIC24F16KL402-E/MQ ✓ ActivePIC24F16KL402-E/MQ Overview
Drop-in alternatives for PIC24F16KL402-E/MQ — 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 PIC24F16KL402-E/MQ (same form factor and footprint) — differing in Operating Voltage, Package.
PIC24F16KL402-I/MQ
✅ Drop-InContact for price
View Datasheet →PIC24F16KL402T-I/MQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F16KL402-E/MQ Maximum Ratings & Electrical Characteristics
| Product Type | 16-bit Flash Microcontroller |
| CPU Core | PIC24F |
| Maximum Clock Frequency | 32 MHz |
| Flash Memory | 16 KB (5.5K x 24) |
| RAM | 1 KB |
| EEPROM | 512 bytes |
| Operating Voltage | 3 V |
| Low-Power Technology | nanoWatt XLP |
| Serial Interface | MSSP with I2C/SPI |
| Timer Peripheral | CCP/ECCP |
| Package | 28-QFN (5x5 mm) |
| Mounting Type | Surface Mount |
| Temperature Grade | Extended temperature grade |
| Pin Count | 28 pins |
PIC24F16KL402-E/MQ 28-qfn (5x5 mm) Pin Configuration Guide
Pin configuration for PIC24F16KL402-E/MQ (28-qfn (5x5 mm) 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 PIC24F16KL402-E/MQ.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24F16KL402-E/MQ is suitable for 6 applications: Portable Consumer Accessories, Medical Disposable Devices, Industrial Control Modules, Battery-Powered Sensor Nodes, Security and Access-Control Equipment, Motorized Consumer and Portable Equipment.
Portable Consumer Accessories
PIC24F16KL402-E/MQ fits compact accessories where a 16-bit control engine, 3 V operation, and low-power behavior are more useful than an 8-bit MCU. The device provides 16 KB Flash, 1 KB RAM, and 512 bytes EEPROM for firmware, working data, and configuration retention, while its 28-QFN 5x5 mm package preserves a small board footprint. Its MSSP I2C/SPI interface can connect a display, sensor, or configuration device, and CCP/ECCP outputs can support indicators or simple actuator control. According to the Microchip Technology family data sheet, the PIC24F16KL402 family is aimed at portable media players, cell-phone accessories, electronic toys, and portable sports equipment. Using nanoWatt XLP sleep features and keeping unused peripherals disabled can improve battery life while retaining the computation needed for user-interface state, low-cost calibration, and peripheral coordination.
Recommended
Medical Disposable Devices
PIC24F16KL402-E/MQ is appropriate for low-cost disposable medical testers where compactness, deterministic control, and low standby consumption are important. Its 16-bit PIC24F core operates up to 32 MHz and includes MSSP I2C/SPI plus CCP/ECCP peripherals, enabling a compact controller to coordinate sensors, indicators, and simple fluid or actuator mechanisms. The 28-QFN 5x5 mm package minimizes PCB area, while 16 KB Flash supports device firmware and 512 bytes EEPROM can retain small configuration values. According to the supplied Microchip Technology family materials, PIC24F KL devices are intended for disposable low-cost medical testers, dispensers, and inhalers. Engineering validation should include the complete medical device risk process, electrical isolation strategy, sensor accuracy, cleaning resistance, and applicable regulatory evidence rather than relying on component marketing alone.
Recommended
Industrial Control Modules
PIC24F16KL402-E/MQ can serve as the local controller in compact industrial modules where a 32 MHz 16-bit MCU provides more arithmetic headroom than an 8-bit device without requiring a large processor. MSSP supports I2C or SPI connections to sensors, transceivers, or data converters, while CCP/ECCP supports timing, capture, compare, and PWM tasks. The device's 3 V operating point and 28-QFN 5x5 mm package allow direct placement in compact control hardware. According to the official product description, the PIC24F16KL402 family combines low-power operation with flexible peripherals and is aimed at cost-sensitive applications. For industrial deployment, use the extended-temperature ordering option only where its verified limits suit the enclosure temperature, and validate watchdog, brownout, communications recovery, ESD, and power-supply behavior under the actual system conditions.
Recommended
Battery-Powered Sensor Nodes
PIC24F16KL402-E/MQ is well suited to battery-powered sensor nodes because the PIC24F16KL402 family emphasizes nanoWatt XLP eXtreme Low Power consumption. A designer can use MSSP I2C or SPI to connect a low-power sensor, disable unused peripherals, and place the MCU into an appropriate low-power state between measurements. The 16-bit architecture and 32 MHz maximum clock provide useful control and data-processing capability while 16 KB Flash accommodates firmware and 1 KB RAM supports temporary data handling. The compact 28-QFN 5x5 mm package is also helpful in space-constrained wearable or remote-monitoring products. Actual battery performance depends on wake frequency, sensor current, regulator quiescent current, and leakage, so engineers should calculate average current from the complete system rather than the MCU specification alone.
Recommended
Security and Access-Control Equipment
PIC24F16KL402-E/MQ provides the combination of compact packaging, 16-bit processing, configurable serial peripherals, and nonvolatile memory required by low-cost security and access-control modules. MSSP I2C or SPI can connect a reader, keypad controller, display, or external nonvolatile data device, while CCP/ECCP can handle timing inputs and indicator outputs. Its 16 KB program Flash, 1 KB RAM, and 512 bytes EEPROM provide a practical partition for embedded security-related control functions. According to the supplied PIC24F KL family material, low-power PIC24F KL devices are suitable for safety and security applications. Designers should evaluate code-protection features, debug-access policy, lock configuration, tamper response, communication security, and the operating-temperature envelope before selecting the exact suffix for production.
Recommended
Motorized Consumer and Portable Equipment
PIC24F16KL402-E/MQ can coordinate motors, position sensors, and user controls in small portable products where the 28-QFN footprint and 3 V supply are advantageous. CCP/ECCP peripherals provide timing and PWM functions commonly used to control drive signals, while MSSP I2C/SPI can connect an encoder, accelerometer, or remote interface. The 32 MHz 16-bit core has more computation capacity than an 8-bit controller, and 16 KB Flash accommodates a more capable application layer. According to the PIC24F16KL402 family data sheet, the family supports portable consumer equipment such as personal media and sports products. A practical design must include adequate motor-driver isolation, transient protection, current sensing, watchdog handling, and verified battery voltage ranges because the MCU itself does not replace the external power stage.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KL402-E/MQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KL402-I/MQ | PIC24F16KL402T-I/MQ |
|---|---|---|---|
| Package | 28-QFN (5x5 mm) | 28-QFN (5x5 mm) | 28-QFN (5x5 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Core | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz |
Key Differentiators
- Same-package grade migration (vs PIC24F16KL402-I/MQ)
- Compact 16-bit control in a 5x5 mm footprint (vs PIC24F16KL402T-I/MQ)
- Low-power peripherals for embedded products (vs PIC24F16KL402-I/MQ)
Design Notes
Place all decoupling capacitors immediately adjacent to the appropriate VDD and ground pins, with short, low-inductance connections and a solid ground plane. The supplied material does not reproduce the manufacturer's recommended capacitor values, so do not infer them from this page; use the exact values and placement guidance in the official family data sheet. The 28-QFN 5x5 mm package also requires careful escape routing, and its exposed-pad connection must follow the manufacturer land-pattern and thermal-design instructions.
Design the 3 V supply and decoupling for the MCU's operating current, startup behavior, and attached peripherals rather than relying on the nominal operating voltage alone. Confirm whether the selected board uses the on-chip regulator, its required input range, and permissible output capacitance from the manufacturer documentation. Estimated system power cannot be calculated from the supplied excerpts because no detailed current table, regulator topology, or operating-mode profile was provided. Validate brownout, wake-up, and power-sequence behavior with the final firmware.
Do not treat every PIC24F16KL402 suffix as mechanically interchangeable. The verified alternatives retain the 28-QFN 5x5 mm package, but their ordering codes indicate different temperature or tape-and-reel options. Before substitution, verify the package drawing, exposed pad, temperature grade, pin multiplexing, programming configuration, and lifecycle status. Also confirm the required PIC24F16KL402 family datasheet revision applicable to the production design rather than relying on generic distributor summaries.
Firmware must explicitly select the clock source, peripheral pins, sleep behavior, and watchdog policy during initialization. The PIC24F16KL402 offers MSSP I2C/SPI and CCP/ECCP functions, but the 28-pin package can impose multiplexing constraints between interfaces and general-purpose I/O. Build a pin-allocation table, test every simultaneous peripheral combination, and include reset-cause handling to avoid unintended states after brownout, sleep wake-up, or watchdog recovery.
Compliance Information
The supplied verified excerpts do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because the device is presented as a general-purpose PIC24F microcontroller rather than an AEC-Q100-qualified automotive option.
