PIC18F24K42-E/MV - 8-Bit 64MHz MCU, 16KB Flash, 28-UQFN | Microchip
MPN: PIC18F24K42-E/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $1.99 | $995.00 |
| 1,000 | $1.75 | $1,750.00 |
PIC18F24K42-E/MV Overview
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM, and a configurable set of peripherals on a single silicon die. PIC18F-series MCUs belong to the broader class of microcontrollers -> embedded controllers -> semiconductors. Microcontrollers are the computational backbone of virtually every modern electronic product, from sensor nodes to automotive ECUs, and the 8-bit class retains a strong foothold in cost-sensitive, deterministic-control applications where low power and rapid interrupt response outweigh raw processing throughput.
Key differentiating features include Core Independent Peripherals (CIPs) such as CLC (Configurable Logic Cell), CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), and the Numerically Controlled Oscillator (NCO), which offload tasks from the CPU to dedicated hardware. Intelligent analog includes a 12-bit ADC2 with Computation, two 8-bit DACs, two comparators with 5-bit DAC reference, and zero-cross detection. DMA enables data movement without CPU involvement, while vectored interrupts with peripheral-priority encoding reduce interrupt latency for time-critical events. These features collectively differentiate the PIC18F24K42-E/MV from earlier PIC18F generations such as K22 and K40, which lack CLC and ADC2 with Computation.
Typical applications for the PIC18F24K42-E/MV include automotive body electronics, sensor conditioning and IoT edge nodes, BLDC/PMSM motor control (often paired with the CWG), LED lighting controllers, and small-form-factor consumer devices where the 4x4 mm UQFN footprint saves PCB area. The integrated 12-bit ADC2 and zero-cross detect enable direct connection to TRIAC-dimmable AC-line applications without external zero-cross circuitry.
When designing with this device, observe the recommended decoupling practice of one 100 nF ceramic capacitor per VDD pin placed within 2 mm of the pin, plus a 10 uF bulk capacitor at the regulator output. The UQFN package requires careful PCB land pattern design per IPC-7351; avoid hand-soldering in production. The automotive -E temperature grade extends operation to +125C, qualifying the device for under-hood and body-control modules.
Drop-in alternatives for PIC18F24K42-E/MV — 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 PIC18F24K42-E/MV (same form factor and footprint) — differing in DAC, Package, Comparators, Core Architecture, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F24K42-I/MV
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC18F25K42-I/MV
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18F24K40-I/MV
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC18F24K22-E/MV
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC18F24K42-E/ML
✅ Drop-In✓ In Stock
$1.68 / Unit
View Datasheet →PIC18F24K42-E/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit enhanced mid-range) |
| Maximum CPU Clock | 64 MHz |
| Instruction Throughput | 16 MIPS |
| Program Flash Memory | 16 KB (8K x 16 words) |
| SRAM | 1 KB |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit ADC2 with Computation |
| DAC | 2 x 8-bit DAC |
| Comparators | 2 with 5-bit DAC reference |
| Core Independent Peripherals | CLC, CWG, HLT, NCO |
| DMA Channels | Yes (peripheral-to-memory, memory-to-memory) |
| Operating Temperature Range | -40C to +125C (Automotive / -E grade) |
| Package | 28-pin UQFN (4 x 4 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Product Family | PIC18FxxK42 |
PIC18F24K42-E/MV Pin Configuration
| Pin 1 | RA5 — General-purpose I/O / ADC2 channel |
| Pin 2 | RA4 — General-purpose I/O / ADC2 channel |
| Pin 3 | RA3 — General-purpose I/O / ADC2 channel |
| Pin 4 | RA2 — General-purpose I/O / DAC1 output |
| Pin 5 | RA1 — General-purpose I/O / DAC2 output |
| Pin 6 | RA0 — General-purpose I/O / ADC2 channel |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — General-purpose I/O / oscillator |
| Pin 9 | RA6 — General-purpose I/O / oscillator |
| Pin 10 | RC0 — General-purpose I/O |
| Pin 11 | RC1 — General-purpose I/O |
| Pin 12 | RC2 — General-purpose I/O |
| Pin 13 | RC3 — General-purpose I/O |
| Pin 14 | RC4 — General-purpose I/O |
| Pin 15 | RC5 — General-purpose I/O |
| Pin 16 | RC6 — General-purpose I/O / TX |
| Pin 17 | RC7 — General-purpose I/O / RX |
| Pin 18 | VSS — Ground reference (second pad) |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | RB0 — General-purpose I/O / ADC2 channel |
| Pin 21 | RB1 — General-purpose I/O / ADC2 channel |
| Pin 22 | RB2 — General-purpose I/O / ADC2 channel |
| Pin 23 | RB3 — General-purpose I/O / ADC2 channel |
| Pin 24 | RB4 — General-purpose I/O / ADC2 channel |
| Pin 25 | RB5 — General-purpose I/O / ADC2 channel |
| Pin 26 | RB6 — General-purpose I/O / ICSP clock |
| Pin 27 | RB7 — General-purpose I/O / ICSP data |
| Pin 28 | VPP/MCLR — Master clear reset / programming voltage |
Typical Applications
PIC18F24K42-E/MV is suitable for 6 applications: Automotive Body Electronics and Lighting Control, IoT Edge Sensor Nodes and Wireless Hubs, BLDC and PMSM Motor Control, AC-Line Dimmable LED Lighting, Consumer Appliance User Interface and HMI, Industrial Sensor Conditioning and 4-20 mA Loop Transmitters.
Automotive Body Electronics and Lighting Control
The PIC18F24K42-E/MV is well suited to automotive body electronics including interior LED lighting, mirror control, and HVAC damper drivers. Its automotive -40C to +125C operating range qualifies it for cabin and under-hood environments, while the integrated CWG (Complementary Waveform Generator) generates dead-time-controlled half-bridge gate signals for MOSFET or IGBT drivers without CPU overhead. The 12-bit ADC2 with Computation performs oversampling and averaging directly in hardware, simplifying battery-voltage monitoring and current sensing for short-circuit detection. Combined with the small 4x4 mm UQFN footprint, the device enables compact PCBs behind instrument clusters and door modules where PCB area is constrained by mechanical packaging.
Recommended
IoT Edge Sensor Nodes and Wireless Hubs
The PIC18F24K42-E/MV fits low-power IoT edge nodes thanks to its XLP (eXtreme Low Power) architecture with sub-uA sleep current and rapid wake from Core Independent Peripherals. The CLC can be configured to wake the CPU only on a specific sensor threshold, dramatically reducing average power consumption in battery-operated sensor nodes such as temperature, humidity, or air-quality monitors. The 256-byte EEPROM stores calibration data and node identifiers across power cycles, while the 12-bit ADC2 with oversampling reads low-output sensors directly without an external amplifier. The 4x4 mm UQFN enables integration into coin-cell-powered devices where every square millimeter of PCB matters.
Recommended
BLDC and PMSM Motor Control
The PIC18F24K42-E/MV integrates the CWG (Complementary Waveform Generator) and PWM modules needed to drive the gate inputs of a 3-phase inverter for small BLDC or PMSM motors in fans, pumps, and e-bike accessories. The CWG provides hardware dead-time insertion to prevent shoot-through in the half-bridge, while the 12-bit ADC2 samples back-EMF and current-sense signals synchronously to the PWM for sensorless commutation on small motors. Core Independent Peripherals such as CLC can implement Hall-sensor decoding or fault shutoff without CPU latency, allowing the CPU to focus on the speed-control loop. The automotive temperature grade also makes it suitable for underhood cooling fans.
Recommended
AC-Line Dimmable LED Lighting
The PIC18F24K42-E/MV drives AC-line TRIAC-dimmable LED lamps by combining zero-cross detection on a comparator input with the 12-bit ADC2 measuring phase-angle of the dimmer. The CLC generates the TRIAC gate-pulse timing without CPU jitter, producing flicker-free dimming across a wide range of dimmer brands. The 1.8-5.5 V supply range allows direct operation from a small capacitive-dropper power supply on the AC line, simplifying the BOM versus a discrete analog dimming circuit. The 4x4 mm UQFN package fits inside the GU10 or PAR16 form factor where PCB area is severely limited by the lamp housing.
Recommended
Consumer Appliance User Interface and HMI
The PIC18F24K42-E/MV serves as the user-interface controller in small consumer appliances such as coffee machines, microwave ovens, and washing-machine front panels, driving segmented LCD or LED displays and reading capacitive-touch buttons. The CWG produces the AC drive waveforms for the LCD segments while the comparators read touch-probe signals, both running independently of the CPU. DMA moves display data from RAM to the LCD waveform generator without CPU load, freeing the CPU to handle communication and supervisory logic. The 256-byte EEPROM stores user preferences and last-state across power cycles, which is essential for appliances that lose mains power frequently.
Recommended
Industrial Sensor Conditioning and 4-20 mA Loop Transmitters
The PIC18F24K42-E/MV conditions analog sensor signals in industrial 4-20 mA loop transmitters and RTD / thermocouple transmitters. The 12-bit ADC2 with oversampling achieves effective resolution beyond 16 bits for thermocouple cold-junction compensation, while the on-chip DAC generates the 4-20 mA loop current with calibration coefficients stored in EEPROM. The 1.8-5.5 V supply range is compatible with low-power loop-powered designs, and the -40C to +125C automotive temperature grade covers most industrial cabinet environments. The HLT (Hardware Limit Timer) triggers safety shutoff if the sensor signal exits the expected window, protecting downstream equipment without CPU intervention.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F24K42-E/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F24K42-I/MV | PIC18F25K42-I/MV | PIC18F24K40-I/MV | PIC18F24K22-E/MV | PIC18F24K42-E/ML |
|---|---|---|---|---|---|---|
| Package | 28-UQFN (4x4 mm) | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-QFN (6x6 mm) - larger |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 32 KB | 16 KB | 8 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 2 KB | 1 KB | 768 B | 1 KB |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| ADC Resolution | 12-bit ADC2 | 12-bit ADC2 | 12-bit ADC2 | 10-bit ADC | 10-bit ADC | 12-bit ADC2 |
| Core Independent Peripherals (CLC/CWG/HLT/NCO) | Yes (all four) | Yes (all four) | Yes (all four) | No | No | Yes (all four) |
| EEPROM | 256 B | 256 B | 256 B | None | 256 B | 256 B |
| Operating Temperature Range | -40C to +125C (Automotive -E) | -40C to +85C (Industrial -I) | -40C to +85C (Industrial -I) | -40C to +85C (Industrial -I) | -40C to +125C (Automotive -E) | -40C to +125C (Automotive -E) |
Key Differentiators
- 12-bit ADC2 with Computation and Core Independent Peripherals (CLC/CWG/HLT/NCO) (vs PIC18F24K40-I/MV)
- Automotive extended temperature grade (-40C to +125C) in the -E/MV variant (vs PIC18F24K42-I/MV)
- Compact 28-UQFN (4x4 mm) package option (vs PIC18F24K42-E/ML)
Design Notes
The 28-UQFN (4x4 mm) package has an exposed center pad that MUST be soldered to a PCB ground pad for both electrical performance and thermal dissipation. Use an IPC-7351 land pattern with the exposed pad sized at approximately 2.5 x 2.5 mm with thermal via array (typically 4-9 vias at 0.3 mm diameter) to the inner ground plane. Place one 100 nF X7R ceramic decoupling capacitor within 2 mm of the VDD pin (pin 19), plus a 10 uF bulk capacitor at the regulator output. Hand-soldering UQFN in production is not recommended - use a hot-air rework station or reflow profile with peak temperature below 250C to avoid damaging the package.
The PIC18F24K42-E/MV operates from 1.8 V to 5.5 V on VDD and supports both 3.3 V and 5 V system rails. The on-chip voltage regulator requires a 1.8 V minimum to guarantee Flash programming; below 1.8 V the device enters a retention-only state. For battery applications powered from 2x AA cells (2.0-3.2 V), the wide input range allows direct connection without a boost regulator. For AC-line or USB-powered designs, add a TVS diode (e.g., 5 V SMAJ) on VDD and a series ferrite bead for ESD and surge protection per IEC 61000-4-2.
Estimated: configure the Configuration Words (CONFIG1 through CONFIG5) before locking the device - in particular, the WDT (Watchdog Timer), LVP (Low-Voltage Programming), and BOR (Brown-Out Reset) settings must be set explicitly. Leaving the WDT enabled with the default ~4 ms timeout will trigger unexpected resets in long-running sensor applications. Also, do not rely on the internal HFINTOSC accuracy over temperature if your application requires precise UART baud rates - use an external crystal on RA6/RA7 (pins 8 and 9) or a PLL-multiplied HFINTOSC with software calibration. Finally, ICSP programming requires pull-down resistors on RB6/RB7 (pins 26/27); omitting these will prevent in-circuit programming after assembly.
Compliance Information
RoHS and REACH compliance per Microchip product page. The -E temperature grade is part of Microchip's automotive product line; AEC-Q100 qualification letter is available from Microchip on request. Halogen-free per Microchip material declaration.
