PIC16LF1824-E/SL - 7KB Flash 8-bit MCU, 32MHz, 14-SOIC | Microchip
MPN: PIC16LF1824-E/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.46 | $2.46 |
| 10 | $2.21 | $22.10 |
| 100 | $1.97 | $197.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.59 | $1,590.00 |
PIC16LF1824-E/SL Overview
A PIC microcontroller (Programmable Interface Controller) is a compact RISC-based microcontroller featuring integrated Flash program memory, RAM, EEPROM, and a rich set of peripherals such as ADC, comparators, timers, PWM modules, and communication interfaces. PIC MCUs sit in the broader hierarchy of microcontrollers -> embedded controllers -> processors -> semiconductors, serving applications where deterministic real-time control, low cost, and low power are critical.
Key features of the PIC16LF1824-E/SL include 12 I/O pins, an integrated mTouch capacitive touch sensing peripheral, a 10-bit ADC with up to 11 channels, multiple Enhanced USART, SPI, and I2C interfaces, and a hardware 16-bit PWM module. The 'LF' (low-voltage/low-power F) variant operates from 1.8V to 3.6V, drawing as little as 25 nA in sleep mode per Microchip's nanoWatt XLP technology claims.
Architecturally, the device uses a Harvard-style RISC core with a 14-bit instruction word, 8-level hardware stack, and 32 MHz internal oscillator that supports PLL-assisted operation from a 31 kHz source. The mTouch peripheral enables capacitive touch sensing directly on I/O pins, eliminating external touch controller ICs in user-interface designs.
Typical applications include battery-powered IoT sensor nodes, capacitive touch user interfaces, low-power remote controls, wearable health monitoring, and energy harvesting systems. Its combination of 7KB Flash and XLP power modes makes it a frequent choice for cost- and power-constrained embedded designs.
When designing with this MCU, observe the 1.8V to 3.6V supply range; using 5V will damage the LF variant - the non-LF PIC16F1824 supports the wider range. Use the internal 32 MHz oscillator with PLL to eliminate external crystals in space-constrained layouts.
This page consolidates distributor inventory and stock data, pin-compatible drop-in alternatives from Microchip and other vendors, and practical low-power design considerations that are not aggregated in any single manufacturer datasheet.
Drop-in alternatives for PIC16LF1824-E/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 PIC16LF1824-E/SL (same form factor and footprint) — differing in Package, Core Architecture, ADC, I/O Pins, Internal Oscillator.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1824-I/SL
✅ Drop-In✓ In Stock
$0.87 / Unit
View Datasheet →PIC16F1824-I/SL
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1823-I/SL
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC16LF1554-I/SL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF1824-E/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 (Enhanced Mid-Range), 8-bit RISC |
| Instruction Set | 14-bit, 200 ns instruction cycle at 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 256 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Internal Oscillator | 32 MHz with PLL (factory calibrated) |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V (LF variant) |
| I/O Pins | 12 |
| ADC | 10-bit, up to 11 channels |
| PWM Modules | Enhanced 16-bit PWM, multiple ECCP |
| Communication Interfaces | EUSART, SPI, I2C |
| Capacitive Touch | mTouch peripheral on supported I/O |
| Package | 14-pin SOIC (SL), 3.90 mm body width |
| Operating Temperature | -40 C to +125 C (E suffix = Extended) |
| Technology | nanoWatt XLP (eXtreme Low Power) |
| RoHS Status | Compliant |
PIC16LF1824-E/SL Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 2 | RA5 — Digital I/O / analog input / ICSPCLK |
| Pin 3 | RA4 — Digital I/O / analog input / ICSPDAT |
| Pin 4 | RA3/MCLR/VPP — Digital input only / Master Clear (reset) / programming voltage |
| Pin 5 | RC5 — Digital I/O / analog input / PWM output |
| Pin 6 | RC4 — Digital I/O / analog input |
| Pin 7 | RC3 — Digital I/O / analog input / SCL (I2C) |
| Pin 8 | RC2 — Digital I/O / analog input |
| Pin 9 | RC1 — Digital I/O / analog input / SDA (I2C) |
| Pin 10 | RC0 — Digital I/O / analog input |
| Pin 11 | RA2 — Digital I/O / analog input / T0CKI |
| Pin 12 | RA1/ICSPCLK — Digital I/O / analog input / serial programming clock |
| Pin 13 | RA0/ICSPDAT — Digital I/O / analog input / serial programming data |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16LF1824-E/SL is suitable for 7 applications: Battery-Powered IoT Sensor Node, Capacitive Touch User Interface, Low-Power Remote Control (BLE/Sub-GHz Keyfob), Wearable Health Monitor, Energy-Harvesting Wireless Switch, Industrial Sensor Transmitter (4-20 mA / 0-10 V), Smart Home Lighting Controller.
Battery-Powered IoT Sensor Node
The PIC16LF1824-E/SL is well suited to battery-powered IoT sensor nodes because its 1.8V-3.6V Vdd range and nanoWatt XLP technology deliver sleep currents as low as 25 nA. With 7KB Flash and 256B RAM, it can host a sensor-reading application loop, an ADC conversion, and an EUSART-based transmitter while running at 32 MHz internal oscillator with PLL. Designers should use sleep mode between sample intervals and wake on the internal 32 kHz low-power oscillator to achieve multi-year battery life on a single coin cell in remote telemetry or smart metering applications.
Recommended
Capacitive Touch User Interface
The PIC16LF1824-E/SL integrates the mTouch capacitive sensing peripheral, allowing engineers to implement touch buttons, sliders, or proximity sensors directly on selected I/O pins without an external touch controller IC. The 32 MHz CPU executes the mTouch scan algorithm quickly enough for multi-button interfaces, while the 10-bit ADC handles proximity and water-override detection. Typical designs use 1.8V-3.6V supply from a small lithium cell, making this MCU a strong fit for kitchen appliances, consumer electronics, and IoT lighting controls.
Recommended
Low-Power Remote Control (BLE/Sub-GHz Keyfob)
The PIC16LF1824-E/SL is widely used in remote control keyfobs because it can stay in sleep mode at 25 nA and wake on a button press to drive a 315/433/868 MHz transmitter. Its 7KB Flash holds the rolling-code or fixed-code firmware, and the integrated PWM module can drive an IR LED for infrared variants. The 14-SOIC package keeps the PCB small, while the 1.8V minimum Vdd lets the design run from a single CR2032 cell for several years of standby operation in garage door openers, automotive keyfobs, and IoT actuators.
Recommended
Wearable Health Monitor
Wearable health monitors such as heart-rate patches, pulse oximeters, and step-counters benefit from the PIC16LF1824-E/SL's combination of 1.8V-3.6V operation, 25 nA sleep current, and a 10-bit ADC capable of sampling photodiode or ECG signals. The mTouch peripheral can implement capacitive on/off or mode-change buttons directly through a plastic enclosure, and the EUSART or I2C interface streams data to a BLE module. Designers typically pair the MCU with a CR2032 cell and a low-power BLE SoC for multi-month battery life in disposable or rechargeable wearables.
Recommended
Energy-Harvesting Wireless Switch
Energy-harvesting wireless switches use a piezoelectric or kinetic element to generate just enough energy to transmit a single packet. The PIC16LF1824-E/SL is ideal here because it can boot up from a small reservoir capacitor, transmit via the EUSART, and return to sub-uA sleep within milliseconds. The 32 MHz internal oscillator with PLL eliminates any startup delay associated with external crystals. Operating from 1.8V-3.6V directly matches the output range of typical energy-harvesting boost converters used in EnOcean-compatible switches and self-powered IoT buttons.
Recommended
Industrial Sensor Transmitter (4-20 mA / 0-10 V)
The PIC16LF1824-E/SL's extended -40 C to +125 C temperature range makes it suitable for industrial 4-20 mA or 0-10 V sensor transmitters used in process control. Its 10-bit ADC reads the sensor element, the EUSART drives an isolated RS-485 link, and the 16-bit PWM module can synthesize a 0-10 V analog output with adequate resolution. The 'E' suffix temperature grade ensures operation near motors, solenoids, or in outdoor enclosures, while the wide 1.8V-3.6V Vdd accepts a regulated 3.3V rail from common industrial DC-DC converters.
Recommended
Smart Home Lighting Controller
Smart home lighting controllers, including dimmers and RGBW controllers, leverage the PIC16LF1824-E/SL's integrated 16-bit PWM and mTouch peripherals. The PWM module drives LED strings with smooth fades, while the mTouch peripheral implements touch dimming without mechanical switches. The 14-SOIC (SL) package supports reflow-compatible surface-mount assembly for mass production. The 1.8V-3.6V Vdd accepts a regulated 3.3V supply from a small AC-DC module, making it suitable for retrofit LED controllers and low-voltage landscape lighting products.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1824-E/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1824-I/SL | PIC16F1824-I/SL | PIC16LF1823-I/SL | PIC16LF1554-I/SL |
|---|---|---|---|---|---|
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Vdd Range | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 5.5V | 1.8V - 3.6V | 1.8V - 3.6V |
| Flash | 7 KB | 7 KB | 7 KB | 3.5 KB | 7 KB |
| RAM | 256 B | 256 B | 256 B | 128 B | 256 B |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| mTouch Cap Sense | Yes | Yes | Yes | Yes | No |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Key Differentiators
- Extended temperature grade in same 14-SOIC footprint (vs PIC16LF1824-I/SL)
- Full 7KB Flash and 256B RAM vs reduced-memory family members (vs PIC16LF1823-I/SL)
- 1.8V-3.6V low-voltage operation (vs PIC16F1824-I/SL)
Design Notes
Estimated: at 32 MHz active current is roughly 2 mA at 3.3V per the typical characteristics in datasheet 41419A; in the deepest sleep state with peripherals off, current drops to ~25 nA. For battery-life calculations, assume duty-cycling with the 32 kHz LFINTOSC as wake-up source and the ADC disabled between conversions. Decoupling: place 100 nF X7R as close as practical to VDD pin 1, plus a bulk 10 uF tantalum or ceramic within 1 cm to handle the 32 MHz core switching transients.
Keep the MCLR pin (pin 4) bypassed with a 10 kohm pull-up to VDD if not driven by an external supervisor; Microchip datasheet 41419A recommends a 100 nF capacitor on MCLR for in-circuit serial programming (ICSP) noise immunity. For the 14-SOIC package, allow at least 0.2 mm clearance around pin 1 marker for reflow profiling and probe access during in-circuit debug. PPS (Peripheral Pin Select) mappings must be configured in firmware before alternate functions appear on selected I/O.
Do not exceed 3.6V on VDD - the 'LF' variant is not 5V tolerant despite sharing the same datasheet as the PIC16F1824. A common substitution mistake is to drop a PIC16F1824 firmware onto an LF device and apply 5V, which latches up. Also: when migrating from PIC16F1824 code, the LF variant requires the LFOFR / BOR configuration bits to enable the low-power brown-out reset at the lower threshold (2.6V default vs 4.0V for the F variant). Always re-validate configuration bits after LF substitution.
For I2C bus speeds above 400 kHz, add 4.7 kohm pull-ups to VDD (not 3.3V if VDD is below 3.0V) per datasheet 41419A I2C peripheral specification. The EUSART in high-speed mode (BRGH = 0, BRG16 = 1) supports up to 5 Mbps but requires accurate FOSC setting; use the PLL block to lock the 32 MHz oscillator to a 31 kHz source if crystal accuracy is needed. Probe the MCLR line during ICSP to ensure no spurious resets during in-field firmware upgrades.
Compliance Information
RoHS and REACH compliant per Microchip environmental compliance documentation. Lead-free NiPdAu finish, MSL1 moisture sensitivity. Not AEC-Q100 qualified - for AEC-Q100 automotive grade, source a separate Q100-qualified variant (none currently offered for this part number) or up-screen parts.
