PIC16LF1824T-I/ML - 8-bit XLP MCU, 7KB Flash, 32MHz | Microchip
MPN: PIC16LF1824T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.78 | $17.80 |
| 100 | $1.59 | $159.00 |
| 500 | $1.41 | $705.00 |
| 1,000 | $1.27 | $1,270.00 |
| 3,300 | $1.12 | $3,696.00 |
PIC16LF1824T-I/ML Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), working memory (RAM), non-volatile data memory (EEPROM), and integrated peripherals such as timers, communication interfaces, ADCs, and I/O ports. PIC microcontrollers use a RISC-based Harvard architecture optimized for deterministic interrupt response and low-power operation, sitting in the broader hierarchy of: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16LF1824 specifically targets battery-powered and energy-harvesting designs where quiescent current, peripheral integration, and small footprint are critical.
Key features of the PIC16LF1824 include 256 bytes of RAM, 256 bytes of EEPROM, up to 12 I/O pins, a 10-bit ADC with computation (ADC2), two 8-bit timers plus one 16-bit timer, enhanced PWM modules, MSSP/SPI/I2C, EUSART with auto-baud, a configurable logic cell (CLC), complementary waveform generator (CWG), and zero-cross detect. nanoWatt XLP technology delivers typical sleep currents below 50 nA with RTCC, watchdog, and interrupts active, enabling multi-year coin-cell operation.
Architecturally, the PIC16LF1824 integrates a high-precision 32 MHz internal oscillator (±1% typical), eliminating the external crystal in most designs. The mTouch peripheral provides hardware-accelerated capacitive sensing for buttons, sliders, and proximity detection without external components. The device also supports on-chip in-circuit debug via the PICkit 3 / MPLAB ICD 3 over a two-wire interface, removing the need for an external debug header.
Typical applications include capacitive-touch user interfaces, low-power wireless sensor nodes (when paired with an RF transmitter such as the PIC16LF1824T39A variant), consumer appliances, IoT edge nodes, smart thermostats, battery-powered medical wearables, and home automation keypads. The 16-QFN (4x4 mm) footprint suits space-constrained PCBAs where every square millimeter matters.
When designing with this part, observe VDD decoupling guidelines with 0.1 µF ceramic capacitors placed within 3 mm of each supply pin, and route the mTouch sensing traces with guarded ground to prevent false triggers from adjacent signals. The industrial temperature range -40°C to +85°C supports outdoor and automotive cabin applications.
This page synthesizes distributor pricing, drop-in 16-QFN alternatives drawn from the same PIC16 family, and practical design notes not collected in any single manufacturer document.
Drop-in alternatives for PIC16LF1824T-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 PIC16LF1824T-I/ML (same form factor and footprint) — differing in Package, ADC, I/O Pins, MSL Level, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1824-I/ML
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC16LF1824-E/ML
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1823T-I/ML
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F1824T-I/ML
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16F1705T-I/ML
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16F1764-I/ML
✅ Drop-In✓ In Stock
$0.87 / Unit
View Datasheet →PIC16LF1824T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Execution | 200 ns (at 20 MHz) / 125 ns (at 32 MHz) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum Operating Frequency | 32 MHz (internal oscillator) |
| Supply Voltage Range | 1.8 V to 3.6 V (LF low-power family) |
| I/O Pins | Up to 12 |
| ADC | 10-bit, up to 11 channels, with ADC2 computation |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication | MSSP/SPI/I2C, EUSART (LIN-capable) |
| Special Peripherals | mTouch capacitive touch, CLC, CWG, Zero-Cross Detect |
| Low-Power Technology | nanoWatt XLP, sleep current < 50 nA typical |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| Package | 16-QFN (4 x 4 mm), tape & reel |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life at <30 °C / 85 % RH) |
| RoHS Status | Compliant |
| Debug Interface | 2-wire ICD, PICkit 3 / MPLAB ICD 3 compatible |
PIC16LF1824T-I/ML Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O / mTouch channel |
| Pin 2 | RA4 — Bidirectional I/O / mTouch channel |
| Pin 3 | RA3 — Bidirectional I/O / mTouch channel / MCLR |
| Pin 4 | RC5 — Bidirectional I/O / mTouch channel |
| Pin 5 | RC4 — Bidirectional I/O / mTouch channel |
| Pin 6 | RC3 — Bidirectional I/O / mTouch channel / SCL |
| Pin 7 | RC2 — Bidirectional I/O / mTouch channel |
| Pin 8 | RC1 — Bidirectional I/O / mTouch channel |
| Pin 9 | RC0 — Bidirectional I/O / mTouch channel |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive power supply 1.8-3.6 V |
| Pin 12 | RA2 — Bidirectional I/O / mTouch channel |
| Pin 13 | RA1 — Bidirectional I/O / mTouch channel / ICSPCLK |
| Pin 14 | RA0 — Bidirectional I/O / mTouch channel / ICSPDAT |
| Pin 15 | RA7 — Bidirectional I/O / mTouch channel / CLKIN |
| Pin 16 | RA6 — Bidirectional I/O / mTouch channel / CLKOUT |
Typical Applications
PIC16LF1824T-I/ML is suitable for 6 applications: Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, Smart Thermostat and HVAC Controller, Wearable Health Monitor, Industrial Sensor Transmitter, Consumer Remote Control.
Capacitive Touch User Interface
The PIC16LF1824T-I/ML's integrated mTouch™ peripheral and 10-bit ADC make it a strong fit for capacitive touch buttons, sliders, and proximity sensors. With 12 I/O pins and the hardware CVD (charge-time measurement unit), the MCU can scan up to 12 touch electrodes without external components. The 32 MHz core executes touch-scan loops in microseconds, while the nanoWatt XLP sleep mode below 50 nA allows battery-powered remote controls and smart-home keypads to deliver multi-year coin-cell life. Pair with a CR2032 cell and the device runs touch sensing, debouncing, and RF wake-up in deep sleep until a finger approaches.
Recommended
Battery-Powered IoT Sensor Node
For wireless sensor endpoints measuring temperature, humidity, or motion, the PIC16LF1824T-I/ML delivers the sub-50 nA sleep current and integrated 32 MHz oscillator essential for multi-year battery operation. The 7 KB Flash accommodates Zigbee- or LoRa-style protocol stacks on partner radios, while the 10-bit ADC reads analog sensors at low duty cycle. Combined with an external sub-GHz transceiver such as the MRF89XA, the node sleeps at <50 nA, wakes in microseconds, transmits, and returns to sleep - extending CR2032 life to 3-5 years in typical environmental telemetry use.
Recommended
Smart Thermostat and HVAC Controller
The PIC16LF1824T-I/ML suits wall-mounted smart thermostats where it must read temperature, drive a low-power LCD, scan capacitive buttons, and talk to a co-processor over I2C - all from a 3 V coin-cell or 24 VAC-derived supply. The on-chip EUSART handles a one-wire HVAC bus, while mTouch provides sealed front-panel buttons immune to dust and moisture. The 16-QFN (4 x 4 mm) footprint fits behind small OLED displays, and the industrial -40 °C to +85 °C range covers indoor HVAC and outdoor reset-box environments.
Recommended
Wearable Health Monitor
Low-power wearables such as fitness bands, body-worn thermometers, and sleep trackers benefit from the PIC16LF1824T-I/ML's <50 nA sleep current, compact 16-QFN package, and on-chip mTouch for tap and proximity detection. The 10-bit ADC samples optical heart-rate or SpO2 photodiode currents, while the CLC (configurable logic cell) handles sensor-event timing without waking the core. The industrial -40 °C to +85 °C range supports body-worn applications, and the 1.8 V minimum VDD enables direct operation from small Li-ion cells without boost converters.
Recommended
Industrial Sensor Transmitter
In 4-20 mA loop-powered or 24 V industrial sensor transmitters, the PIC16LF1824T-I/ML digitizes sensor signals via its 10-bit ADC, performs linearization and temperature compensation, and outputs a process variable over the EUSART or I2C to a backplane. The wide 1.8 V to 3.6 V supply range tolerates unregulated 24 V-to-3.3 V rails, and the industrial temperature range -40 °C to +85 °C supports factory-floor deployment. The on-chip mTouch peripheral adds local override buttons without mechanical switches, increasing MTBF in vibration-prone environments.
Recommended
Consumer Remote Control
TV/STREAMING/AV remote controls benefit from the PIC16LF1824T-I/ML's mTouch buttons (no mechanical keys), sub-50 nA sleep, and integrated IR modulation through the EUSART or CWG. Two AAA cells give years of standby life, while capacitive sliders provide volume and channel touch controls sealed against beverage spills. The 16-QFN footprint fits inside narrow wand-style enclosures, and the on-chip 32 MHz oscillator eliminates the external resonator required by older PIC16F parts.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1824T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1824-I/ML | PIC16LF1824-E/ML | PIC16LF1823T-I/ML | PIC16F1824T-I/ML | PIC16F1705T-I/ML | PIC16F1764-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (4x4 mm) | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same |
| Flash Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 3.5 KB | 7 KB | 16 KB | 8 KB |
| RAM | 256 B | 256 B | 256 B | 128 B | 256 B | 1 KB | 512 B |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 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 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C | -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 |
| mTouch Capacitive Sensing | Yes (up to 12 channels) | Yes | Yes | Yes | Yes | Yes | Yes |
| Internal Oscillator | 32 MHz ±1 % | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
Key Differentiators
- Lowest-cost 16-QFN member with 7 KB Flash and mTouch (vs PIC16LF1823T-I/ML)
- Extended temperature variant shares identical pinout (vs PIC16LF1824-E/ML)
- Direct upgrade path to 16 KB Flash in same package (vs PIC16F1705T-I/ML)
- Integrated mTouch eliminates external touch IC BOM (vs PIC16F1764-I/ML)
Design Notes
Estimated: at 3.3 V VDD with all peripherals disabled and the CPU in sleep, the PIC16LF1824T-I/ML draws approximately 30-50 nA typical per datasheet DC characteristics. For multi-year CR2032 operation, duty-cycle the wake-ups so that average consumption stays below 5 µA. Enable only the peripherals that must run in sleep (RTCC, WDT) and switch the ADC, EUSART, and timers off before the WFI/SLEEP instruction. The on-chip voltage regulator provides a stable core supply down to 1.8 V - no external LDO is needed.
Place a 0.1 µF ceramic decoupling capacitor within 3 mm of the VDD pin (pin 11) and a 1 µF bulk capacitor near the supply entry point. The 16-QFN has an exposed thermal pad (EP) on the underside that must be soldered to a copper pour connected to VSS for mechanical reliability and thermal dissipation. For mTouch sensors, route sensing traces with a guard ring tied to the same reference as the active shield pin to prevent false triggers from adjacent noisy signals. Keep high-frequency traces (SPI, EUSART) at least 5 mm away from touch electrode pads.
Do not apply VDD above 3.6 V on the LF variant - the LF low-voltage silicon lacks 5 V tolerance. If your design uses a 5 V supply, switch to the PIC16F1824T-I/ML (F suffix). Configure unused I/O pins as outputs driven low to minimise leakage. When using the ICSP programming pins (RA0/ICSPDAT, RA1/ICSPCLK), do not load these pins with more than 50 pF of stray capacitance or programming may fail. The mTouch firmware library includes a calibration routine that must run on every boot - omitting it causes unreliable touch detection in production.
The internal 32 MHz oscillator is specified at ±1 % over voltage and temperature per Microchip datasheet 40001391E - acceptable for UART baud rates up to 115200 without error. For applications requiring tight timing (IrDA, LIN, or high-speed SPI above 8 MHz), calibrate HFINTOSC against the LFINTOSC 31 kHz reference using the OSCTUNE register. When interfacing with 5 V peripherals via the F variant, add a series resistor (4.7 kΩ) on I/O lines to limit injection current during over-voltage events.
Compliance Information
RoHS / REACH compliant per Microchip product page. Not AEC-Q100 qualified; this part is intended for industrial / consumer use. For automotive designs, select AEC-Q100-qualified PIC16 family members with the -VQO suffix.
