PIC16F18424-I/SL - 8-Bit 32MHz MCU, 7KB Flash, XLP, 14-SOIC
MPN: PIC16F18424-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.32 | $1.32 |
| 10 | $1.18 | $11.80 |
| 100 | $1.02 | $102.00 |
| 500 | $0.91 | $455.00 |
| 1,000 | $0.83 | $830.00 |
PIC16F18424-I/SL Overview
An 8-bit microcontroller (MCU) is a compact computing device that integrates a CPU, RAM, non-volatile program memory, and peripherals onto a single die. The PIC16 architecture uses a 14-bit instruction word and modified Harvard memory layout, enabling deterministic single-cycle execution of most instructions. Microcontrollers in this class sit within the broader embedded hierarchy as: MCU -> 8-bit MCU -> PIC16 family -> PIC16F184xx sub-family -> PIC16F18424 device, providing a balance of low power, peripheral integration, and ease of development for general-purpose and battery-powered designs.
Key features of the PIC16F18424-I/SL include eXtreme Low-Power (XLP) technology with typical sleep currents below 50 nA, a wide operating voltage range from 1.8V to 5.5V (F-variant), and the integrated 12-bit ADCC for sensor measurement. The device also supports Memory Access Partitioning (MAP) and a Device Information Area (DIA) for application-specific calibration constants.
Architecturally, the PIC16F18424 uses a RISC core with 49 instructions, a hardware stack, and an interrupt controller supporting both core and peripheral interrupts. The 12-bit ADCC runs up to 100 ksps and includes averaging, oversampling, and threshold-scan modes that offload signal-conditioning work from the CPU. The CIP philosophy lets timers, PWMs, CWG, and the ADCC chain without CPU intervention, reducing active-mode power consumption.
Typical applications include battery-powered IoT sensor nodes, consumer electronics remote controls, industrial automation modules, low-power wireless sensor platforms, and functional-safety-capable embedded subsystems. The combination of XLP, 12-bit ADCC, and integrated CIPs makes the part particularly attractive for thermostats, wearables, and portable instrumentation.
When designing with this MCU, plan the clock tree carefully: switching from the 32 MHz HFINTOSC to the 31 kHz LFINTOSC during sleep lowers current draw but requires wake-up timing analysis. Use MPLAB X IDE with XC8 compiler and MPLAB Code Configurator (MCC) to generate CIP link chains and ADCC setup code, avoiding hand-written peripheral register access.
Drop-in alternatives for PIC16F18424-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 PIC16F18424-I/SL (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Comparators, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18324-I/SLVAO
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F18426-I/SL
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1825-I/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.84 / Unit
View Datasheet →PIC16F18424-E/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.62 / Unit
View Datasheet →PIC16F18424-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.81 / Unit
View Datasheet →PIC16F18424-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 8-bit RISC |
| CPU | PIC16 (49 instructions, 14-bit instruction word) |
| Maximum Clock Frequency | 32 MHz |
| Program Memory (FLASH) | 7 KB (4K x 14) |
| Data SRAM | 512 B |
| Data EEPROM | 256 B |
| I/O Pins | 12 |
| Timers | 11 |
| External Interrupts | 12 |
| ADC | 12-bit ADCC, up to 100 ksps |
| DAC | 5-bit / 8-bit DAC module |
| PWM Channels | 2 |
| Waveform Generator | CWG (Complementary Waveform Generator) |
| Comparators | Yes (integrated) |
| Communication | EUSART, SPI, I2C |
| Operating Voltage Range | 1.8 V to 5.5 V (F-variant) |
| Operating Temperature | -40C to +85C (Industrial -I) |
| Package | 14-SOIC (SL), 3.90 mm body width |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Low-Power Technology | XLP (eXtreme Low-Power) |
| MSL Level | 1 |
PIC16F18424-I/SL Pin Configuration
| Pin 1 | RA3/MCLR/VPP — Digital I/O / Master Clear reset / ICSP programming voltage |
| Pin 2 | RA7 — Digital I/O / VDD-related (per datasheet) |
| Pin 3 | RA6 — Digital I/O / VSS-related (per datasheet) |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA4 — Digital I/O / analog input |
| Pin 6 | RA5 — Digital I/O / analog input |
| Pin 7 | RC0 — Digital I/O / analog input |
| Pin 8 | RC1 — Digital I/O / analog input |
| Pin 9 | RC2 — Digital I/O / analog input |
| Pin 10 | RC3/SCL — Digital I/O / I2C clock |
| Pin 11 | RC4/SDA — Digital I/O / I2C data |
| Pin 12 | RC5 — Digital I/O / analog input |
| Pin 13 | RA1/ICSPCLK — Digital I/O / ICSP clock |
| Pin 14 | RA0/ICDDAT — Digital I/O / ICD data |
Typical Applications
PIC16F18424-I/SL is suitable for 7 applications: Battery-Powered IoT Sensor Node, Industrial Automation Module, Consumer Remote Control, Portable Medical Monitoring, LED Lighting Controller, Smart Home Edge Sensor, Functional-Safety Embedded Subsystem.
Battery-Powered IoT Sensor Node
The PIC16F18424-I/SL is an excellent fit for battery-powered IoT sensor nodes because of its XLP sleep current below 50 nA and integrated 12-bit ADCC that lets the CPU sleep between sensor reads. The 32 MHz HFINTOSC supports rapid wake-measure-transmit cycles on coin-cell or LiSOCl2 primary batteries, while the 1.8-5.5 V VDD range covers 2xAA alkaline and single-cell Li-Ion chemistries directly. Use the CWG + ADCC threshold scanner to wake the MCU only when an analog signal crosses a configured limit, drawing microamps during idle. Pair with an SPI-connected sensor (e.g., MEMS accelerometer or temperature IC) and an EUSART-attached wireless module such as the Microchip RN2483 LoRa transceiver. The 14-SOIC footprint is hand-solderable, simplifying prototypes, and the 7 KB FLASH is sufficient for sensor conditioning, oversampling, and MAC-layer stacks.
Recommended
Industrial Automation Module
For industrial automation modules the PIC16F18424-I/SL delivers the 12-bit ADCC for precise 4-20 mA loop sensing, the EUSART for Modbus RTU over RS-485, and the CWG for driving solid-state relays or opto-isolated outputs. The 32 MHz core and 7 KB FLASH handle Modbus framing plus simple PID control loops, while the integrated SPI bus interfaces with digital isolators and external DACs. Industrial temperature operation (-40C to +85C) and wide VDD tolerance (1.8-5.5 V) support 24 V-bus-derived supply rails via simple LDO dropper. The 14-SOIC package is robust for hand assembly and field-replacement. Use the CIP-driven PWMs to generate precise timing signals for valve control and the threshold-scanner ADCC mode to detect over-current faults without CPU overhead, reducing deterministic interrupt latency.
Recommended
Consumer Remote Control
The PIC16F18424-I/SL is well matched to consumer IR remote controls thanks to its sub-50 nA sleep current (extending battery life past the typical 3-5 year CR2032 lifetime), 32 MHz HFINTOSC for IR carrier generation, and 7 KB FLASH for protocol stacks (RC5, NEC, SIRC). The 12-bit ADCC is rarely needed but available for capacitive touch keys or battery voltage sensing. The CWG module can directly drive an IR LED without external FETs. Industrial-grade -I parts meet standard consumer indoor conditions, while the small 14-SOIC allows a slim wand-style enclosure. Pair the MCU with a single CR2032 cell; the wide 1.8-5.5 V VDD range keeps the part regulated across battery discharge. CIP-driven PWMs eliminate CPU wake-ups for carrier generation.
Recommended
Portable Medical Monitoring
In portable medical monitoring peripherals such as pulse-oximeter finger probes or spirometer mouthpieces, the PIC16F18424-I/SL provides deterministic 32 MHz performance with the 12-bit ADCC oversampling and averaging required for pulse-rate extraction. XLP sleep current below 50 nA extends battery life across multi-day ambulatory use, while the 1.8-5.5 V VDD range supports direct Li-Ion or 2xAAA supply without boost circuitry. The integrated DAC drives a constant-current source for optical SpO2 sensing, and the CWG can generate precision PWM for vibratory biofeedback. The 14-SOIC footprint meets hand-soldering and small-pcb-area requirements. Engineers should validate the IEC 60601-1 EMI margins and use the Device Information Area (DIA) for production calibration constants stored at final test.
Recommended
LED Lighting Controller
The PIC16F18424-I/SL drives multi-channel LED lighting controllers because the CWG (Complementary Waveform Generator) and two PWMs deliver dead-band-controlled switching for buck/boost LED drivers with no CPU overhead. The 12-bit ADCC monitors LED current through a sense resistor and triggers over-current shutdown via hardware threshold, while the integrated 5-bit/8-bit DAC provides smooth dimming curves. EUSART and SPI enable DMX512 or DALI bridge designs. Sleep current under 50 nA keeps standby power below 0.1 W for ErP-compliant fixtures. Industrial temperature grade -I supports indoor commercial installations. Pair with an external N-channel MOSFET or use a TPS92515HV step-down LED driver for higher-current strings; the small 14-SOIC fits inside MR16 and GU10 form factors.
Recommended
Smart Home Edge Sensor
Smart-home edge sensors benefit from the PIC16F18424-I/SL's combination of XLP low power, 12-bit ADCC with hardware threshold scanning, and I2C/SPI host interfaces for off-the-shelf sensors. The MCU can wake periodically from the 32 kHz LFINTOSC to take an ADCC reading, compare to a stored threshold, and only transmit via BLE if the value changed - dramatically reducing radio time. The 7 KB FLASH supports ZigBee 3.0 or Thread application code via Microchip's MiWi stack. Industrial -40C to +85C rating covers outdoor edge devices, and the 14-SOIC surface-mount package suits high-density PCBAs. Designers should pair the MCU with a low-Iq LDO (e.g., MCP1700) to maintain total standby current below 2 uA, and use the EUSART for AT-command BLE bridges.
Recommended
Functional-Safety Embedded Subsystem
The PIC16F18424-I/SL belongs to Microchip's Functional Safety (FuSa) MCU family and supports IEC 60730 Class B compliance for household appliance safety through built-in diagnostics: windowed watchdog, hardware CRC on FLASH/RAM, clock-loss detection, and ADCC self-test. The 32 MHz core plus CIP chaining handles sensor sampling, debounce, and safety-validated output actuation without CPU interrupts. The 256 B EEPROM stores safety counters and the 14-SOIC package allows through-hole-style prototyping for laboratory certification testing. Designers should follow Microchip application note AN2721 for Class B software libraries and validate the BOR/POR thresholds against the application supply profile. The Device Information Area (DIA) holds the unique device serial number for traceability required by automotive and white-goods quality systems.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18424-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18324-I/SL | PIC16F18426-I/SL | PIC16F1825-I/SL | PIC16F18424-E/SL | PIC16F18424-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | 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 | 14-PDIP (P) - through-hole |
| CPU Core | PIC16 8-bit, 32 MHz | PIC16 8-bit, 32 MHz | PIC16 8-bit, 32 MHz | PIC16 enhanced 8-bit, 32 MHz | PIC16 8-bit, 32 MHz (same die) | PIC16 8-bit, 32 MHz (same die) |
| FLASH | 7 KB | 7 KB | 14 KB | 14 KB | 7 KB | 7 KB |
| SRAM | 512 B | 256 B | 1024 B | 768 B | 512 B | 512 B |
| ADC | 12-bit ADCC | 10-bit ADC | 12-bit ADCC | 10-bit ADC | 12-bit ADCC | 12-bit ADCC |
| CWG (Waveform Generator) | Yes | No | Yes | No | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C |
Key Differentiators
- 12-bit ADCC with hardware threshold scanning (vs PIC16F18324-I/SL)
- Complementary Waveform Generator (CWG) module (vs PIC16F1825-I/SL)
- Functional Safety (FuSa) diagnostics built in (vs PIC16F18424-E/SL (same family))
Design Notes
Estimated: VDD 3.3 V sourced via an MCP1700 LDO (1.6 uA quiescent) keeps total idle current below 5 uA when the PIC16F18424-I/SL is in sleep with WDT disabled. Set the BOR to the application's minimum VDD, and use the LFINTOSC (31 kHz) for sleep current measurements to avoid the HFINTOSC's 500 uA startup spike. Disable unused peripherals (ADC, EUSART, SPI, I2C) before entering sleep to drop current another 30-50 uA. Note: This is a derived estimate, not a datasheet specification.
At 32 MHz active mode with all peripherals enabled, the PIC16F18424-I/SL draws approximately 7-9 mA at 3.3 V, dissipating about 25 mW. The 14-SOIC package has theta_JA around 100 C/W, giving negligible self-heating. The real thermal constraint is the VDD source: an MCP1700 LDO with 250 mA rating handles this comfortably. At higher ambient temperatures (above +70C), ensure peripheral current draw is verified against the Microchip PIC16(L)F18424 datasheet DC characteristics table.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin, plus a 10 uF bulk capacitor on the same supply trace. Keep the ICSP connector (ICDDAT/ICSPCLK/MCLR) on a separate 5-pin header so the board can be programmed in-circuit without desoldering. For sensor traces (analog inputs), route them away from digital switching lines and from the CWG output to avoid noise injection into the ADCC. The 14-SOIC land pattern follows IPC-7351 nominal density, with a slightly longer pad to support hand-soldering.
Do not leave the MCLR/VPP pin floating - it must be pulled up to VDD via a 10 kOhm resistor for normal operation, and only driven high by the ICSP programmer during debug. Setting CONFIG words after the LOCK sequence can brick the device, so configure them once at the start of main(). Do not run HFINTOSC above the VDD-dependent Fmax - at 1.8 V VDD, max frequency is 4 MHz. The 12-bit ADCC requires the AVDD supply to be stable, or its references will drift. When using EUSART with high baud rates, set the BRGH bit and tune SPBRG against the actual oscillator frequency.
Compliance Information
RoHS compliant per Microchip product page. Industrial -40C to +85C grade; for -40C to +125C choose the PIC16F18424-E/SL extended grade. AEC-Q100 is not applicable to this industrial MCU; Microchip offers separate automotive PIC16F18424 variants for AEC-Q100 applications.
