PIC16LF1824-I/ML - 8-bit XLP MCU 7KB Flash 32MHz | Microchip
MPN: PIC16LF1824-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.41 | $1.41 |
| 10 | $1.27 | $12.70 |
| 100 | $1.08 | $108.00 |
| 500 | $0.93 | $465.00 |
| 1,000 | $0.82 | $820.00 |
PIC16LF1824-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable peripherals such as ADC, timers, and communication interfaces. Within the broader taxonomy, this PIC16LF1824 belongs to the 8-bit microcontroller family, the PIC16 sub-family of the PIC® portfolio, and is further branded under Microchip's nanoWatt XLP (eXtreme Low Power) technology platform designed for battery-powered and energy-conscious embedded designs where quiescent current is critical to operating life.
Key features include 18 programmable I/O pins, a 10-bit ADC with up to 12 channels, two 8-bit and one 16-bit timers, hardware PWM, master I²C/SPI and EUSART (UART) peripherals, an on-chip 32 MHz internal oscillator, an on-chip voltage reference, and dedicated brown-out reset and power-on reset supervisors. The LF silicon supports a wide 1.8V to 3.6V supply range with full-speed 32 MHz operation up to 3.6V and slower 16 MHz operation down to 1.8V.
The architecture combines a 14-bit instruction word, a 16-level deep hardware stack with overflow/underflow reset, automatic interrupt context saving, and a configurable instruction set extension (PIC mid-range compatibility) to optimize both code density and execution time. The integrated mTouch capacitive-sensing module supports capacitive proximity and touch-button user interfaces without external components, while the on-chip temperature indicator and mTouch plus ADC-based touch measurement enable robust sensing in noisy environments.
Typical applications include remote controls, sensor nodes, home-automation and IoT edge devices, wearable health and fitness electronics, low-power wireless sensor transmitters, white-goods user-interface panels, capacitive touch-button appliances, and battery-powered instrumentation such as smoke detectors, electronic shelf labels, and handheld meters where the XLP nanoWatt sleep modes extend operating life into the multi-year range on a single coin cell.
When designing with this part, evaluate total current budget including wake-up, ADC sample, and transmit windows against the chosen battery's self-discharge. The internal 32 MHz oscillator is trimmed at the factory and typically adequate for most consumer timing requirements, but for asynchronous serial links (EUSART) requiring accurate baud rates, an external crystal or the HFINTOSC with calibrated postscaler is recommended.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes drawn from the Microchip datasheet and cross-reference data not consolidated on a single distributor product page.
Drop-in alternatives for PIC16LF1824-I/ML — 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-I/ML (same form factor and footprint) — differing in Package, ADC, I/O Pins, Core Architecture, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1824-E/ML
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F1824-I/ML
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF1823-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1704-I/ML
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC16LF1768-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF15376-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF1824-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Word Width | 14-bit |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Clock | 32 MHz (internal oscillator) |
| Supply Voltage Range (LF) | 1.8 V to 3.6 V |
| I/O Pins | 18 |
| ADC | 10-bit, up to 12 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM | Yes, hardware PWM outputs |
| Communication | I²C, SPI, EUSART (UART) |
| Package | 16-pin VQFN (ML) 4x4 mm with exposed pad |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| Technology | nanoWatt XLP (eXtreme Low Power) |
| Special Features | mTouch capacitive sensing, on-chip temp indicator, BOR/POR, WDT |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Programming/Debug | ICSP, supports MPLAB X, PICkit 3, ICD 3 |
PIC16LF1824-I/ML Pin Configuration
| Pin 1 | RA3/AN3/C1IN+/VREF+ — Bidirectional I/O; analog input; comparator input; voltage reference positive |
| Pin 2 | RA4/AN4/C1OUT/T1G/CCP5/SDO — Bidirectional I/O; analog input; comparator output; Timer1 gate; CCP5; SPI data out |
| Pin 3 | RA5/MCLR/VPP — Bidirectional I/O; Master Clear reset (active low); programming voltage |
| Pin 4 | VSS — Ground reference |
| Pin 5 | RA0/AN0/C12IN0-/DACOUT — Bidirectional I/O; analog input; comparator input; DAC output |
| Pin 6 | RA1/AN1/C12IN1-/ICSPCLK — Bidirectional I/O; analog input; comparator input; ICSP clock |
| Pin 7 | RA2/AN2/T0CKI/C1OUT — Bidirectional I/O; analog input; Timer0 clock; comparator output |
| Pin 8 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 9 | RB4/AN10/SDI/SDA — Bidirectional I/O; analog input; SPI data in; I²C data |
| Pin 10 | RB5/AN11/RX/DT — Bidirectional I/O; analog input; EUSART RX; data |
| Pin 11 | RB6/SCK/SCL/TX/CK — Bidirectional I/O; SPI clock; I²C clock; EUSART TX/CK |
| Pin 12 | RB7/TX/CK/CCP4 — Bidirectional I/O; EUSART TX; CCP4 |
| Pin 13 | RC0/AN4/CCP2 — Bidirectional I/O; analog input; CCP2 |
| Pin 14 | RC1/AN5/CCP1/P1A — Bidirectional I/O; analog input; CCP1; PWM P1A |
| Pin 15 | RC2/AN6/P1D/CCP1 — Bidirectional I/O; analog input; PWM P1D; CCP1 |
| Pin 16 | RC3/AN7/CCP3/P1C — Bidirectional I/O; analog input; CCP3; PWM P1C |
| Pin 17 | EP — Exposed thermal pad - connect to VSS for thermal dissipation |
Typical Applications
PIC16LF1824-I/ML is suitable for 6 applications: Battery-Powered IoT Sensor Node, Capacitive Touch-Button Appliance Panel, Wearable Health and Fitness Device, Remote Control Handheld, Electronic Shelf Label, Industrial Sensor Transmitter (4-20 mA).
Battery-Powered IoT Sensor Node
The PIC16LF1824-I/ML is purpose-built for low-duty-cycle IoT sensor nodes operating from a single coin-cell or 2xAA supply. Its nanoWatt XLP Sleep current of roughly 30 nA with retention RAM, plus its 1.8V minimum supply, let the part sleep between sensor reads for months on a CR2032 cell. The 7 KB Flash accommodates BLE/Zigbee host-stack stubs or LoRaWAN driver code, while the integrated 10-bit ADC handles temperature, light, or voltage sampling. Pair it with an MRF24J40 or RN2483 transceiver for sub-GHz or LoRaWAN end-node designs.
Recommended
Capacitive Touch-Button Appliance Panel
The PIC16LF1824-I/ML integrates Microchip's mTouch capacitive sensing peripheral with up to 12 channels and a dedicated 10-bit ADC for noise-robust proximity measurement. Its 18 I/O pins can drive LED backlighting and buzzer feedback while handling 8 to 10 touch pads in a 16-pin QFN footprint — ideal for white-goods front panels, dimmer switches, and kitchen appliance keypads. Operating from 1.8V to 3.6V lets it run directly from rectified mains supplies, while the BOR/POR supervisors guarantee clean reset behavior across brown-out events from inductive loads.
Recommended
Wearable Health and Fitness Device
Wearable fitness bands require multi-year battery life, sub-1 mA average current, and small PCB area — exactly the target for the PIC16LF1824-I/ML. Its 16-pin VQFN (ML) 4x4 mm footprint fits wrist-form-factor boards, the 32 MHz internal oscillator executes heart-rate algorithm code in real time, and the I²C/SPI peripherals connect to PPG sensors and accelerometers. The nanoWatt XLP Sleep plus RTC modes let the part draw less than 50 nA between sensor reads, while the on-chip temperature indicator compensates for sensor thermal drift in continuous-monitoring scenarios.
Recommended
Remote Control Handheld
Consumer remote controls for TVs, set-top boxes, and smart-home hubs benefit from the PIC16LF1824-I/ML's low cost, low power, and integrated IR capabilities. Its PWM and Timer1 peripherals generate precise 38 kHz carrier waveforms for NEC, RC5, or RC6 protocols, while the 7 KB Flash stores protocol lookup tables for multi-device universal remotes. With 18 I/O pins, the part can scan a 5x5 key matrix and drive LED feedback without external logic. Battery life on 2xAAA extends into multi-year range thanks to XLP Sleep current.
Recommended
Electronic Shelf Label
Electronic shelf labels (ESLs) require ultra-low sleep current, a small package, and enough Flash for display refresh logic and RF protocol stacks. The PIC16LF1824-I/ML delivers Sleep currents below 30 nA per the Microchip datasheet, fits a 16-pin VQFN 4x4 mm foot print, and provides the 7 KB Flash and 256 bytes RAM needed for simple ESL firmware. Its 1.8V to 3.6V supply range simplifies single-cell battery implementation, while the EUSART and I²C can drive sub-GHz or 2.4 GHz ESL transceiver modules.
Recommended
Industrial Sensor Transmitter (4-20 mA)
Loop-powered 4-20 mA industrial transmitters are a classic application for the PIC16LF1824-I/ML because its 1.8V minimum supply lets it run from a 12V loop with a low-drop regulator, and its 10-bit ADC with 12 channels can directly measure bridge sensors, RTDs, or 4-wire sensor outputs. The 32 MHz internal oscillator supports 100 ksps ADC sampling for fast step-response settling, while the BOR/POR hardware handles the brown-out and brown-in transitions during current-loop power-up. Its industrial -40 °C to +85 °C rating matches process-industry environmental requirements.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1824-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1824-E/ML | PIC16F1824-I/ML | PIC16LF1823-I/ML | PIC16LF1704-I/ML | PIC16LF1768-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-pin VQFN (ML) 4x4 mm | 16-pin VQFN (ML) 4x4 mm - same | 16-pin VQFN (ML) 4x4 mm - same | 16-pin VQFN (ML) 4x4 mm - same | 16-pin VQFN (ML) 4x4 mm - same | 16-pin VQFN (ML) 4x4 mm - same |
| Flash Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 3.5 KB | 4 KB | 7 KB |
| RAM | 256 bytes | 256 bytes | 256 bytes | 128 bytes | 256 bytes | 256 bytes |
| Max Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| I/O Pins | 18 | 18 | 18 | 16 | 14 | 18 |
| ADC Resolution | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 12 channels |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Largest Flash in same-package LF16 series (vs PIC16LF1823-I/ML)
- Lowest supply ceiling in family for true battery-only designs (vs PIC16F1824-I/ML)
- More ADC channels than smaller package siblings (vs PIC16LF1704-I/ML)
- Industrial -40 to +85 °C vs extended variant (vs PIC16LF1824-E/ML)
Design Notes
Estimated: For battery life calculations on a CR2032 (240 mAh), the LF1824 draws roughly 30 nA in Sleep with retention RAM active per the Microchip datasheet. A 1 Hz wake, ADC sample, and transmit cycle averaging 5 mA for 5 ms yields an average current of roughly (5 mA × 0.005) + (30 nA × 0.995) ≈ 25 µA, giving a theoretical CR2032 life of 240 mAh / 25 µA ≈ 9600 hours ≈ 1.1 years. Add a 3x derating for battery self-discharge and you get a safe design life of roughly 8 to 10 months continuous duty.
The 16-pin VQFN (ML) package has a center exposed pad that should be tied to VSS with at least 4 thermal vias to a ground plane to meet the datasheet's 31 °C/W θJA thermal spec. Place a 100 nF decoupling capacitor within 2 mm of the VDD pin and a 10 µF bulk capacitor on the same supply rail. Keep the ICSPDAT/ICSPCLK traces short (under 50 mm) and away from switching nodes to avoid programming glitches; otherwise the device may fail to enter debug mode.
Do not exceed the 3.6 V absolute maximum on the PIC16LF1824 (LF) variant — transients from inductive loads or USB-VBUS back-feed can latch up or destroy the part. Add a TVS diode such as PESD3V3L4UG on VDD for industrial environments. Also note that the internal 32 MHz HFINTOSC is factory-trimmed but temperature drift can exceed ±5 % over -40 °C to +85 °C; for UART baud-rate stability, switch to a 16 MHz external crystal via the OSCCON register.
For mTouch capacitive sensing designs, add a series 1 kΩ resistor on the mTouch input pads to suppress ESD and conducted EMI. Per the Microchip mTouch design guide, also keep the mTouch trace length under 100 mm, avoid running them parallel to switching power traces, and add a guard ring tied to ground around the touch area. The on-chip CTMU charge-time measurement simplifies implementation but the PCB layout still determines noise immunity.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -40 to +85 °C variant; for AEC-Q100 automotive requirements, evaluate PIC16F1824-E/ML extended-temperature or PIC16F1824T-I/ML automotive-grade options. Halogen-free per Microchip MSL1 JEDEC J-STD-020 classification.
