PIC16LF1824-I/ST - 8-bit 32MHz XLP MCU 7KB Flash | Microchip
MPN: PIC16LF1824-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.16 | $2.16 |
| 10 | $1.94 | $19.40 |
| 100 | $1.62 | $162.00 |
| 500 | $1.35 | $675.00 |
| 1,000 | $1.17 | $1,170.00 |
PIC16LF1824-I/ST Overview
A PIC microcontroller (Programmable Interface Controller) is an 8-bit RISC-based MCU widely used in embedded systems for control-oriented tasks. Within the broader device taxonomy, a PIC MCU is a microcontroller -> embedded processor -> semiconductor IC. The 'LF' prefix denotes the low-power F-series variant optimized for battery-powered designs, while the 'F' (without L) denotes the standard variant with wider voltage range. The PIC16LF1824 belongs to the enhanced mid-range core family offering 49 instructions, 16 stack levels, and C-friendly compiler support via MPLAB XC8.
Key features include 18 I/O pins, 12-channel 10-bit ADC, up to 4 PWM outputs with complementary and dead-band control, configurable logic cells (CLC), numerically controlled oscillator (NCO), multiple communication peripherals (EUSART, MSSP I2C/SPI), and an integrated temperature indicator. The mTouch capacitive touch sensing hardware and the Peripheral Pin Select (PPS) module allow flexible pin-function remapping on a small 14-pin footprint. The nanoWatt XLP technology delivers sleep currents in the nanoampere range, extending battery life in IoT and wearables.
Typical applications include capacitive touch user interfaces (buttons, sliders, proximity), battery management for primary-cell or Li-ion powered devices, low-power sensor nodes, LED lighting control with PWM dimming, and small appliances. The 14-pin TSSOP footprint suits compact PCBs where PIC10/PIC12 footprint compatibility is desired but more memory and peripherals are required.
When designing with this MCU, configure the configuration words for the chosen oscillator source (HFINTOSC is factory calibrated to ±1%/-2%) and ensure the PPS unlock sequence is followed for peripheral routing. For low-power designs, use the nanoWatt XLP sleep modes with WDT disabled when not needed.
This page consolidates distributor pricing, drop-in same-package alternatives, application reference designs, and design notes that complement (and go beyond) the bare datasheet.
Drop-in alternatives for PIC16LF1824-I/ST — 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/ST (same form factor and footprint) — differing in I/O Pins, Package, ADC, Core Architecture, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1824-I/SL
✅ Drop-In✓ In Stock
$0.87 / Unit
View Datasheet →PIC16LF1824-E/ST
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →PIC16F1824-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1823-I/ST
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF1824-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Maximum CPU Speed | 32 MHz (200 ns instruction cycle) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 256 B |
| Data EEPROM | 256 B |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 18 |
| ADC | 10-bit, up to 12 channels, with ADC2 computation |
| Timers | 4 (8-bit and 16-bit, with gate/capture) |
| PWM Outputs | Up to 4 with complementary and dead-band control |
| Communication | EUSART, MSSP (I2C/SPI) |
| Package | 14-pin TSSOP (ST), 4.4 mm body |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, 'I') |
| nanoWatt XLP | Yes (ultra-low-power sleep modes) |
| mTouch Capacitive Sensing | Yes (integrated) |
| Internal Oscillator | 32 MHz HFINTOSC, factory calibrated |
| Peripheral Pin Select (PPS) | Yes |
| MSL Level | 1 (unlimited floor life) |
| RoHS Status | Compliant (lead-free) |
PIC16LF1824-I/ST Pin Configuration
| Pin 1 | RA0/ICSPDAT — Bidirectional I/O / ICD data line |
| Pin 2 | RA1/ICSPCLK — Bidirectional I/O / ICD clock line |
| Pin 3 | RA2 — Bidirectional I/O (analog capable) |
| Pin 4 | RA3/VPP — Bidirectional I/O / programming high voltage |
| Pin 5 | RA4 — Bidirectional I/O (analog capable) |
| Pin 6 | RA5 — Bidirectional I/O (analog capable) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RB4 — Bidirectional I/O (interrupt-on-change) |
| Pin 9 | RB5 — Bidirectional I/O (interrupt-on-change) |
| Pin 10 | RB6 — Bidirectional I/O (interrupt-on-change, ICSPCLK) |
| Pin 11 | RB7 — Bidirectional I/O (interrupt-on-change, ICSPDAT) |
| Pin 12 | VDD — Positive supply (1.8 V to 3.6 V) |
| Pin 13 | RA6/OSC2 — Bidirectional I/O / crystal output |
| Pin 14 | RA7/OSC1 — Bidirectional I/O / crystal input |
Typical Applications
PIC16LF1824-I/ST is suitable for 6 applications: Capacitive Touch User Interface, Battery-Powered Sensor Node, LED Lighting and PWM Dimming Control, Small Appliance Control Board, Portable Medical Device Peripherals, Automotive Body and Accessory Modules.
Capacitive Touch User Interface
The PIC16LF1824-I/ST is purpose-built for capacitive touch user interfaces thanks to the integrated mTouch peripheral and the 10-bit ADC2 with accumulation/threshold computation. With up to 18 I/O and PPS pin remapping, the same 14-pin TSSOP can scan up to 12 touch electrodes via the CTMU charge-time measurement unit. The 32 MHz HFINTOSC delivers 200 ns instruction cycles that complete touch scans in well under 1 ms per channel, supporting smooth slider/proximity response. For battery-powered remote controls, the nanoWatt XLP sleep draws nanoampere currents between scans, enabling years of life on two AA cells when sampled every 50-100 ms. Reference designs in the Microchip TB1101 and AN1416 application notes use this exact MPN family.
Recommended
Battery-Powered Sensor Node
For wireless or wired IoT sensor nodes, the PIC16LF1824-I/ST's 1.8 V to 3.6 V supply range lets it run directly from a single Li-ion cell (3.0 V to 4.2 V via small buck) or two AA alkaline cells (3.0 V nominal). The nanoWatt XLP sleep modes drop the core to tens of nA while the RTC continues from Timer1, enabling decade-long battery life in slowly-sampled applications like environmental sensors. With 7 KB Flash the device holds small LoRaWAN/BLE stack helper code, and the 256 B SRAM is sufficient for sensor-data buffering. The integrated 32 MHz HFINTOSC removes the external crystal BOM, and the 10-bit ADC with ADC2 averaging delivers clean sensor measurements without an external op-amp.
Recommended
LED Lighting and PWM Dimming Control
The PIC16LF1824-I/ST delivers up to four PWM outputs with complementary outputs and dead-band control, ideal for small LED drivers, RGB color-mixing fixtures, and DC-DC converter control. The high-resolution PWM (up to 10-bit) combined with the 32 MHz instruction rate gives smooth 16-bit effective dimming at the audible threshold. The Peripheral Pin Select module routes PWM to any I/O, simplifying PCB layout in space-constrained luminaires. With 7 KB Flash the device can store lighting profiles, color-temperature compensation curves, and DALI/Casambi-style protocol stacks, making it a strong choice for connected smart-bulb designs operating from a 3.3 V rail.
Recommended
Small Appliance Control Board
Household appliances such as coffee makers, blenders, kitchen scales, and personal-care devices use the PIC16LF1824-I/ST for its compact 14-pin TSSOP footprint, robust -40C to +85C industrial temperature range, and integrated peripherals. The 4 timers, EUSART, MSSP I2C/SPI, and 10-bit ADC cover motor-control sensing, weight/level measurement, and user-input handling without external ICs. The nanoWatt XLP sleep draws negligible current when the appliance is idle, satisfying energy-star standby budgets. Microchip application note AN1450 demonstrates a 14-pin TSSOP BLDC controller using this exact family.
Recommended
Portable Medical Device Peripherals
Portable medical peripherals such as glucose meters, pulse-oximeter front-ends, and digital thermometers use the PIC16LF1824-I/ST for its low power consumption, mTouch input support, and reliable 10-bit ADC readings. The 1.8 V to 3.6 V range lets the MCU run from a single coin-cell or pair of alkaline cells, while the integrated temperature indicator simplifies cold-chain and on-board self-test. The 7 KB Flash holds FDA-class-II device firmware in small medical peripherals. The TSSOP-14 footprint supports miniaturized PCB designs in wearable patches and handheld instruments.
Recommended
Automotive Body and Accessory Modules
The PIC16LF1824-I/ST (industrial grade) and its automotive-qualified sibling are used in non-safety body modules such as ambient lighting controllers, seat-position switches, and HVAC trim switches. The TSSOP-14 footprint, 32 MHz performance, and mTouch input support the trend toward touch-based interior controls. The integrated ADC with ADC2 averaging handles multi-channel sensor reading for ambient-light color mixing and occupancy detection. For underhood or extreme-temperature zones, the PIC16LF1824-E/ST variant supports the -40C to +125C range; AEC-Q100 grade-0 parts require stepping to the PIC16F1824-E/ST automotive equivalent.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1824-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1824-I/SL | PIC16LF1824-E/ST | PIC16F1824-I/ST | PIC16LF1823-I/ST |
|---|---|---|---|---|---|
| Package | 14-pin TSSOP (ST) | 14-pin SOIC (SL) - same family | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 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 3.6 V |
| Operating Temperature | -40C to +85C (I-grade) | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Program Flash | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| Data SRAM | 256 B | 256 B | 256 B | 256 B | 256 B |
| I/O Pins | 18 | 18 | 18 | 18 | 16 |
| mTouch Support | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Same silicon in SOIC-14 footprint for hand-rework (vs PIC16LF1824-I/SL)
- Extended-temperature drop-in for industrial and underhood (vs PIC16LF1824-E/ST)
- Higher voltage range with same footprint and peripherals (vs PIC16F1824-I/ST)
- Reduced-pin variant with same Flash and TSSOP-14 footprint (vs PIC16LF1823-I/ST)
Design Notes
Use the nanoWatt XLP sleep modes to drop core current to tens of nA between events. According to the Microchip datasheet, Sleep mode with WDT off typically draws <50 nA at 3 V, and Retention Sleep (RTCC running) draws <500 nA. Wake sources include INT/INT-pin change, Timer1, RTCC, IOC, and ADC conversion-complete. For Li-ion primary cell designs, configure Brown-Out Reset (BOR) at 1.9 V and disable the on-chip Voltage Reference in sleep to minimize quiescent draw.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 12) with the ground return to VSS (pin 7) via a short, wide trace. Add a bulk 1 uF to 10 uF tantalum or ceramic capacitor at the IC supply input. For TSSOP-14 thermal performance, route 5 mm x 5 mm copper pours on both top and bottom layers under the device, stitching with multiple vias to the ground plane. Keep the ICSP pins (RA0/RA1) accessible for in-circuit debugging without removing components.
Do not exceed 3.6 V on VDD - this is the LF variant, not the F variant. Ensure configuration-word settings match the oscillator choice: HFINTOSC with PLL gives 32 MHz without external crystal, but if an external crystal is used the OSC1/OSC2 pins must be configured correctly to avoid contention with RA6/RA7 I/O. When using PPS, follow the unlock sequence (PPSLOCK = 0x55, 0xAA) before remapping peripherals, and lock afterwards to prevent runaway writes.
For mTouch capacitive sensing, route electrode traces as short as possible (ideally under 50 mm), use guarded ground traces around sensitive electrodes, and avoid running digital signals parallel to touch traces. The CTMU charge-time measurement is also sensitive to VDD ripple; keep the analog supply separate from digital switching loads and add a ferrite bead if switching regulators are nearby.
Compliance Information
RoHS compliant per Microchip product page. Lead-free finish. Not AEC-Q100 qualified at the I/ST industrial grade - choose automotive qualified siblings for vehicular applications. Halogen-free per Microchip environmental compliance data.
