PIC18F24K42-I/MV - 8-Bit 64MHz MCU, 16KB Flash, 28-UQFN | Microchip
MPN: PIC18F24K42-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.74 | $17.40 |
| 100 | $1.55 | $155.00 |
| 500 | $1.36 | $680.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC18F24K42-I/MV Overview
A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), non-volatile data memory (EEPROM), and programmable peripherals in a single IC. The PIC18 K42 family positions itself in Microchip's product hierarchy as an 8-bit PIC18 device with XLP (eXtreme Low Power) technology, sitting above baseline PIC10/12/16 families and below 16-bit dsPIC and 32-bit SAM families in capability and computational performance. The 8-bit architecture trades raw throughput for deterministic interrupt response and very low active/idle current, which is ideal for battery-operated and always-on designs.
Key features of the PIC18F24K42-I/MV include a vectored interrupt controller with prioritized interrupts, a Direct Memory Access (DMA) controller, Memory Access Partitioning (MAP) for code protection, Device Information Area (DIA) and a peripheral pin-select (PPS) system. The XLP technology supports deep sleep currents in the nanoamp range, with multiple low-power operating modes including Sleep, Idle, Doze and Peripheral Module Disable. A 32 kHz secondary oscillator and a 64 MHz internal oscillator reduce BOM by eliminating an external crystal in many designs.
Typical applications include IoT sensor nodes, battery-powered home automation devices, low-power wireless sensor hubs using LIN or UART, motor-control loops with on-chip PWM, and small industrial control boards. The 28-UQFN package suits space-constrained PCB layouts and supports surface-mount reflow.
When designing with this MCU, reserve the 28-UQFN land pattern for drop-in compatibility with the PIC18F25K42, PIC18F26K42 and PIC18F24K40 families. Always check the latest Microchip errata document for ADC2 and DAC rev-id-specific anomalies.
Drop-in alternatives for PIC18F24K42-I/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-I/MV (same form factor and footprint) — differing in Comparators, DAC, Package, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F25K42-I/MV
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC18F24K40-I/MV
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC18F24K42-E/MV
✅ Drop-In✓ In Stock
$1.75 / Unit
View Datasheet →PIC18F26K42-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F24K42-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F24K42-I/MV Maximum Ratings & Electrical Characteristics
| Series | PIC18 XLP (Functional Safety) |
| Core | PIC18 8-bit RISC |
| Program Memory (Flash) | 16 KB (8K x 16) |
| SRAM | 1 KB |
| EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| I/O Pins | 25 |
| ADC | 12-bit ADC2 (channels count not in data) |
| DAC | 5/8-bit DAC |
| Comparators | Yes (on-chip) |
| PWM Channels | Yes (multiple) |
| UART | 2 |
| I2C | 2 |
| SPI | 1 |
| LIN | Yes |
| DMA | Yes |
| Vector Interrupts | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature Range | -40C to +85C (industrial grade) |
| Package | 28-UQFN (MV) 4x4 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| XLP Technology | Yes (eXtreme Low Power) |
| Functional Safety | FuSa capable family |
PIC18F24K42-I/MV Pin Configuration
| Pin 1 | RA5 — General-purpose I/O / analog input |
| Pin 2 | RA4 — General-purpose I/O / analog input |
| Pin 3 | RA3 — General-purpose I/O / analog input |
| Pin 4 | RA2 — General-purpose I/O / analog input |
| Pin 5 | RA1 — General-purpose I/O / analog input |
| Pin 6 | RA0 — General-purpose I/O / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — General-purpose I/O / analog input |
| Pin 9 | RA6 — General-purpose I/O / analog input |
| 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 |
| Pin 17 | RC7 — General-purpose I/O |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply |
| Pin 20 | RB0 — General-purpose I/O / interrupt-on-change |
| Pin 21 | RB1 — General-purpose I/O / interrupt-on-change |
| Pin 22 | RB2 — General-purpose I/O / interrupt-on-change |
| Pin 23 | RB3 — General-purpose I/O / interrupt-on-change |
| Pin 24 | RB4 — General-purpose I/O / interrupt-on-change |
| Pin 25 | RB5 — General-purpose I/O / interrupt-on-change |
| Pin 26 | RB6 — General-purpose I/O / ICS programming clock |
| Pin 27 | RB7 — General-purpose I/O / ICS programming data |
| Pin 28 | VDD — Positive supply |
Typical Applications
PIC18F24K42-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Automotive LIN Node ECUs, Industrial Sensor Signal Conditioning, Small Motor Control with PWM, Smart Home Edge Devices, Low-Power Medical Monitoring Wearables.
Battery-Powered IoT Sensor Nodes
The PIC18F24K42-I/MV fits battery-powered IoT sensor nodes because its XLP Sleep current in the nanoamp range and 64 MHz / 16 MIPS core let the part wake briefly to read sensors and return to sleep. According to the Microchip datasheet, the on-chip 12-bit ADC2 with computation, DMA, and 32 kHz secondary oscillator let peripherals operate independently of the CPU, so average current stays in microamp territory. The 28-UQFN 4x4 mm footprint fits inside a coin-cell sensor tag. Pairing this MCU with a sub-GHz or BLE module over UART keeps bill of materials low.
Recommended
Automotive LIN Node ECUs
The PIC18F24K42-I/MV fits automotive LIN sub-node ECUs because it integrates a hardware LIN-compatible UART, low-power Sleep modes, and -40C to +85C industrial grade operation. According to the Microchip product page, the device family also offers AEC-Q100 grades for under-hood and chassis applications. The 16 KB Flash supports LIN 2.x and J2602 stacks with diagnostic services. The 28-UQFN package withstands automotive temperature cycling and reflow profiles; designers can place this MCU near connectors to keep PCB traces short and EMC robust.
Recommended
Industrial Sensor Signal Conditioning
The PIC18F24K42-I/MV is well-suited to industrial sensor signal conditioning because its 12-bit ADC2 with computation can perform averaging, oversampling and threshold detection in hardware without CPU intervention. According to Microchip's CIP documentation, DMA can move ADC results into RAM while the core sleeps, reducing noise and saving power. The on-chip 5/8-bit DAC, comparators and PWM modules enable closed-loop control of valves, heaters or small actuators. The industrial temperature grade and 28-UQFN compact package suit dense PLC backplane designs.
Recommended
Small Motor Control with PWM
The PIC18F24K42-I/MV drives small brushed DC or stepper motor control loops because it integrates multiple PWM channels, comparators and a 12-bit ADC2 for back-EMF sensing. According to the Microchip datasheet, the 64 MHz core can execute PI control loops at kHz rates while DMA handles ADC sampling autonomously. The Peripheral Pin Select (PPS) lets designers reassign PWM outputs to nearly any pin, easing PCB layout in tight enclosures. The 28-UQFN package's exposed pad supports thermal dissipation for higher-current drive stages.
Recommended
Smart Home Edge Devices
The PIC18F24K42-I/MV is ideal for smart-home edge devices such as lighting keypads, occupancy sensors, thermostat remotes and battery-powered door/window sensors. The XLP nanoamp Sleep currents let coin-cell devices run for years, while UART, I2C and SPI connect to radios, sensors and EEPROM. According to the Microchip datasheet, the 25 GPIO and PPS remapping let one MCU drive multiple front-panel buttons, LED indicators and a serial radio link without external mux logic. The 28-UQFN 4x4 mm package is small enough to fit behind wall switches.
Recommended
Low-Power Medical Monitoring Wearables
The PIC18F24K42-I/MV fits medical wearables such as pulse-oximeter probes, temperature patches and patient movement sensors because of its nanoamp Sleep current, deterministic 8-bit core and integrated 12-bit ADC2. According to the Microchip datasheet, the Functional Safety (FuSa) family characteristics simplify IEC 62304 / IEC 60601 risk-analysis workflows for non-critical monitoring roles. The 28-UQFN package supports thin, flexible PCB stacks. CIPs and DMA let the MCU wake only when a clinically meaningful event occurs, extending battery life across patient-monitoring intervals.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F24K42-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F25K42-I/MV | PIC18F24K40-I/MV | PIC18F24K42-E/MV | PIC18F26K42-I/MV |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (MV) 4x4 mm | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same |
| Flash | 16 KB | 32 KB (+100%) | 16 KB (same) | 16 KB (same) | 64 KB (+300%) |
| SRAM | 1 KB | 2 KB (+100%) | 1 KB (same) | 1 KB (same) | 4 KB (+300%) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 1024 B (+300%) |
| Maximum CPU Frequency | 64 MHz / 16 MIPS | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) |
| ADC | 12-bit ADC2 with computation | 12-bit ADC2 (same) | 10-bit ADC (older) | 12-bit ADC2 (same) | 12-bit ADC2 (same) |
| DMA Controller | Yes | Yes (same) | No | Yes (same) | Yes (same) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
Key Differentiators
- Functional Safety (FuSa) family with documented diagnostics (vs PIC18F24K40-I/MV)
- 12-bit ADC2 with computation and DMA support (vs PIC18F24K22-I/MV)
- Vectored interrupts with priority levels (vs PIC18F25K22-I/MV)
Design Notes
Estimated: at Vdd=3.3V and CPU idle in Sleep mode, the PIC18F24K42-I/MV typically draws sub-microamp current; the XLP datasheet figures give a Sleep current budget around 50 nA with RTC running from the 32 kHz secondary oscillator. Enable only the peripherals needed for each duty cycle and use Peripheral Module Disable (PMD) bits to gate unused IP. For battery-life math, divide active-mode current by duty cycle plus Sleep current; the XLP Sleep current is usually negligible compared to leakage from external sensors.
The 28-UQFN (MV) package has an exposed pad that MUST be soldered to a ground copper pour for thermal dissipation and electrical performance. Stitch vias from the thermal pad to an internal ground plane. Keep the analog AVdd/Vdd pair decoupled with a 100 nF ceramic plus a 1 uF bulk capacitor placed within 2 mm of the supply pins. The UQFN pad pitch is 0.4 mm; ensure your PCB house supports 0.4 mm QFN capability and use NSMD pads with a 0.25 mm solder mask dam.
Place the 32.768 kHz crystal (if used) within 5 mm of the SOSC pins with a guard ring tied to ground, and route traces as differential pairs with 50 ohm impedance. According to Microchip's PIC18F24/25K42 datasheet, ADC2 analog inputs should be routed away from switching nodes and PWM outputs to minimize coupling. Use the Peripheral Pin Select (PPS) feature to assign UART/SPI/I2C lines to pins adjacent to their connectors to avoid crossing high-current traces.
Always read the latest PIC18F24K42 silicon errata (DS80000786 family) before finalizing firmware; ADC2 rev-id-specific anomalies can affect threshold accuracy on early dies. The Configuration Words must be programmed explicitly - leaving them at default POR values can cause the device to boot with an unrecognised oscillator mode. The I2C peripheral requires SDA/SCL pull-ups of 1 kohm to 10 kohm depending on bus speed; do not rely on internal weak pull-ups for 400 kHz Fast-mode operation.
Compliance Information
RoHS and REACH compliance inferred from Microchip product page; this I/MV part is industrial grade (-40C to +85C). For AEC-Q100 qualification, choose the automotive-grade part variant in the PIC18F24K42 family. Halogen-free status not stated in the provided data.
