PIC16LF18424-I/SL - 8-bit XLP MCU, 7KB Flash, 32MHz | Microchip
MPN: PIC16LF18424-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.15 | $115.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.92 | $920.00 |
| 3,000 | $0.85 | $2,550.00 |
PIC16LF18424-I/SL Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile program memory (typically Flash), working RAM, and a rich set of peripherals on one silicon die. PIC microcontrollers use a modified Harvard RISC architecture with a single accumulator (W register) and a small instruction set, which simplifies compiler design and yields highly deterministic interrupt latency. Within the broader taxonomy, the PIC16LF18424 sits under: microcontroller -> 8-bit MCU -> PIC16 family -> enhanced mid-range core -> XLP (eXtreme Low Power) subfamily -> power management and general-purpose embedded control.
Key features include four 10-bit PWM channels with complementary outputs, a 12-bit Analog-to-Digital Converter with Computation (ADCC) offering automated averaging and threshold comparison, two comparators, a 5-bit DAC reference, a Complementary Waveform Generator (CWG) for synchronous motor or power control, and serial interfaces including EUSART, SPI, and I2C. The device operates from 1.8V to 3.6V, making it directly compatible with single-cell lithium coin-cell, two-AA, and 3.3V regulated rails. Core Independent Peripherals (CIPs) allow logic, timing, and signal conditioning to occur without waking the CPU, extending battery life in always-on applications.
Typical applications include IoT sensor nodes, battery-powered medical wearables, low-power wireless transmitters, HVAC sensor interfaces, smart thermostats, and consumer remote controls. Designers should pair the MCU with an external 32.768 kHz crystal or use the LFINTOSC for time-keeping and select the internal HFINTOSC for active processing. Provide a 0.1 uF decoupling capacitor close to VDD and a 10 uF bulk capacitor on the board; route the MCLR pin through a 10 kohm pull-up. The device is in active production, fully RoHS compliant, and supported by MPLAB X IDE, XC8 compiler, and MPLAB Code Configurator (MCC). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF18424-I/SL — 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 PIC16LF18424-I/SL (same form factor and footprint) — differing in Core Architecture, DAC, Package, Operating Temperature, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18424-E/SL
✅ Drop-In✓ In Stock
$1.1 / Unit
View Datasheet →PIC16F18424-I/SL
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC16LF18426-I/SL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18424-I/P
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF18324-I/SL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18424-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 12-bit ADCC with computation |
| PWM Channels | 4 (10-bit), 2 with complementary outputs |
| Comparators | 2 |
| DAC | 5-bit DAC reference |
| CWG | Complementary Waveform Generator |
| Communication Interfaces | EUSART, SPI, I2C |
| Timers | 4 (8/16-bit, with Gate/SRT) |
| Package | 14-SOIC (SL) |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
PIC16LF18424-I/SL Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O / ADC input |
| Pin 2 | RA4 — Bidirectional I/O / ADC input |
| Pin 3 | RA3 — Bidirectional I/O / MCLR |
| Pin 4 | RA2 — Bidirectional I/O / DAC output |
| Pin 5 | RA1 — Bidirectional I/O / I2C clock |
| Pin 6 | RA0 — Bidirectional I/O / I2C data |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RB7 — Bidirectional I/O / ICSP data |
| Pin 9 | RB6 — Bidirectional I/O / ICSP clock |
| Pin 10 | RB5 — Bidirectional I/O / PWM output |
| Pin 11 | RB4 — Bidirectional I/O / PWM output |
| Pin 12 | RB3 — Bidirectional I/O / CWG output |
| Pin 13 | RB2 — Bidirectional I/O / CWG output |
| Pin 14 | VDD — Positive supply voltage |
Typical Applications
PIC16LF18424-I/SL is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Medical Devices, Smart Home Sensor Hubs, HVAC Sensor and Control Modules, Industrial Sensor Transmitters, Consumer Remote Controls and HIDs.
Battery-Powered IoT Sensor Nodes
The PIC16LF18424-I/SL fits battery-powered IoT sensor nodes because its XLP technology delivers sub-1 uA sleep current and the 12-bit ADCC with hardware computation allows autonomous sensor sampling without CPU wake. The device operates directly from a single CR2032 coin cell (3.0 V nominal) within its 1.8-3.6 V range, removing the need for a boost converter. The Core Independent Peripherals (CIPs) chain ADC -> threshold compare -> EUSART transmit, so the CPU can remain in deep sleep for years on a single cell. Designers typically pair the MCU with an SPI temperature/humidity sensor and a sub-GHz or BLE radio module, using the CWG for any PWM-based actuator control.
Recommended
Wearable Medical Devices
The PIC16LF18424-I/SL is well-suited for wearable medical devices such as heart-rate patches, pulse oximeters, and continuous glucose monitors where low power, small footprint, and reliable analog performance are critical. The 12-bit ADCC with 100 ksps throughput captures photodiode or bio-impedance signals at sample rates needed for SpO2 and ECG algorithms. Operating from 1.8-3.6 V directly supports single-cell Li-ion or coin-cell batteries, and the CWG can drive LED pulse-oximetry emitters with programmable dead-band. CIP-based peripheral coupling allows the ADC to wake the EUSART for BLE transmission only on threshold-crossing events, extending battery life beyond typical duty cycles.
Recommended
Smart Home Sensor Hubs
The PIC16LF18424-I/SL serves as a low-cost peripheral controller in smart home sensor hubs, including PIR motion detectors, door/window sensors, and environmental monitors. Its EUSART, SPI, and I2C interfaces support direct connection to Zigbee, BLE, or LoRa modules, while the 12-bit ADCC handles thermistor and LDR light-level sensing with hardware averaging. The 32 MHz core runs Zigbee stack fragments or sensor-fusion routines, and the 256-byte EEPROM stores calibration constants and last-known state across power cycles. Industrial -40C to +85C rating makes the device reliable in attics, garages, and outdoor enclosures where temperature swings are common.
Recommended
HVAC Sensor and Control Modules
The PIC16LF18424-I/SL fits HVAC sensor and control modules including thermostats, damper controllers, and air-quality monitors. Its four 10-bit PWM channels can directly drive proportional valves and small DC fans, while the two comparators handle zero-crossing detection for triac-based AC load control. The CWG generates complementary gate-drive signals with programmable dead-time for synchronous-rectifier or half-bridge motor drivers. Industrial temperature grade and the 1.8-3.6 V supply range allow operation from 24 VAC wall adapters via a small capacitive dropper, and 12-bit ADCC accurately reads NTC thermistors and CO2 sensor analog outputs.
Recommended
Industrial Sensor Transmitters
The PIC16LF18424-I/SL is appropriate for industrial 4-20 mA sensor transmitters, RTD conditioners, and process-control analog front ends. The 12-bit ADCC with differential input capability and computation modes handles bridge-sensor signal chains with hardware offset/gain correction, while the 5-bit DAC provides excitation current trimming. The EUSART interfaces to HART modems or RS-485 transceivers, and the CWG generates the PWM needed for 4-20 mA loop conversion in two-wire transmitters. The 1.8-3.6 V supply is well suited to loop-powered designs, and the industrial -40C to +85C rating ensures operation near motors and process piping.
Recommended
Consumer Remote Controls and HIDs
The PIC16LF18424-I/SL drives consumer remote controls, keyboards, and human-interface devices where long battery life and capacitive touch or matrix-scanning are needed. Its CIPs handle matrix key scanning and IR carrier generation without CPU intervention, allowing the device to remain in deep sleep until a key is pressed. The CWG produces a precise 38 kHz or 40 kHz IR carrier with duty-cycle control, and the comparators debounce mechanical switches. With 32 MHz core speed and 7 KB Flash, the MCU supports complex protocols (RC5, SIRC, NEC) and BLE pairing logic while running on a single coin cell for multi-year battery life thanks to XLP sleep modes.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18424-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18424-E/SL | PIC16F18424-I/SL | PIC16LF18426-I/SL | PIC16LF18324-I/SL |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Program Flash | 7 KB | 7 KB | 7 KB | 28 KB | 4 KB |
| Data SRAM | 512 B | 512 B | 512 B | 2 KB | 256 B |
| Supply Voltage | 1.8-3.6 V | 1.8-3.6 V | 1.8-5.5 V | 1.8-3.6 V | 1.8-3.6 V |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Key Differentiators
- Latest-generation 12-bit ADCC with hardware computation (vs PIC16LF18324-I/SL)
- Lowest sleep current via XLP technology (vs PIC16F18424-I/SL)
- More Flash for complex firmware stacks (vs PIC16LF18426-I/SL)
Design Notes
For lowest sleep current, configure the PIC16LF18424-I/SL in Sleep mode with the ADC disabled and the LFINTOSC running at 31 kHz for periodic wake-up via WDT. Place a 100 nF decoupling capacitor within 3 mm of the VDD pin (14) and a bulk 10 uF capacitor near the IC. Use the Voltage Regulator Sleep mode (VREGPM = 1) when Sleep is entered to drop the internal core voltage and achieve sub-1 uA current. Estimated: typical Sleep current at 3.0 V is 0.8 uA per datasheet DS40001994D.
Use a 4-layer PCB with a continuous ground plane beneath the MCU for best EMI performance. Route the MCLR pin (RA3/MCLR) through a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for in-circuit serial programming (ICSP). Keep the ICSPDAT (RB7) and ICSPCLK (RB6) traces short and avoid running them parallel to switching nodes. Pin 1 is indicated by a dot or notch on the 14-SOIC; orient the package accordingly.
Do not apply 5 V to any I/O pin of the LF variant (PIC16LF18424) - the absolute maximum is VDD + 0.3 V. For 5 V-tolerant interfaces, use the PIC16F18424 instead. Always configure the unused I/O pins as outputs driving low (not inputs floating) to minimize current leakage and EMC susceptibility. The MCLR pin should never be left floating; it must have a pull-up to avoid spurious resets.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C); not AEC-Q100 qualified - use automotive-grade variants for vehicle applications.
