PIC16LF18325-I/SL - 8-bit XLP MCU, 14KB Flash, 32MHz | MIT
MPN: PIC16LF18325-I/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.28 | $12.80 |
| 100 | $1.05 | $105.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.84 | $840.00 |
PIC16LF18325-I/SL Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripheral interfaces on one die. The 'LF' prefix denotes a low-voltage variant optimized for battery operation, and 'XLP' (eXtreme Low Power) is Microchip's branding for sleep currents below 1 µA in many modes. PIC16 MCUs sit inside the broader taxonomy: 8-bit MCU → microcontroller → embedded processor → semiconductor. The 14KB Flash rating belongs to a production dataset; quoted code space is 8K × 14 words.
Key features include Peripheral Pin Select (PPS) for flexible digital routing, CLC (Configurable Logic Cell), CWG (Complementary Waveform Generator), CCP/PWM modules, multiple low-power sleep modes, and a 10-bit ADC with computation. The 'I' suffix indicates the industrial temperature grade of -40°C to +85°C, while 'SL' denotes the 14-pin SOIC package.
The PIC16LF18325 uses a Harvard RISC architecture with a 14-bit instruction word and 32MHz internal oscillator. The CIPs (CLC, CWG, NCO, PWM) operate without an MCU, often removing the need for external analog/digital glue logic and reducing BOM cost on sensor and motor control boards.
Typical applications include battery-powered IoT sensor nodes, low-power wearables, consumer remote controls, LED lighting controllers, and small industrial sensors. The wide VDD range and low sleep current make it suited to energy-constrained designs that require long battery life and 14-pin SOIC board compatibility.
When designing with this device, note that the 'LF' variant requires 1.8V minimum VDD; if your system uses 5V rails, select the 'F' (PIC16F18325-I/SL) variant instead. The 14-pin SOIC footprint is shared with several PIC16F1 and PIC16LF1 family members, simplifying PCB reuse.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LF18325-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 PIC16LF18325-I/SL (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Core Architecture, Core Independent Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18325-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18323-I/SL
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16LF18345-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F18345-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18325-E/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF18325-I/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Instruction Word Size | 14-bit |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data Memory (SRAM) | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 10-bit |
| Package | 14-pin SOIC (SL) |
| Operating Temperature | -40 °C to +85 °C (Industrial - Grade 'I') |
| Family | PIC® XLP™ 16F |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals | Yes (CLC, CWG, NCO, PWM, CCP) |
| RoHS Status | Compliant |
PIC16LF18325-I/SL Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input |
| Pin 2 | RA4 — Digital I/O / analog input |
| Pin 3 | RA3/MCLR — Digital I/O or Master Clear (reset) input |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA1 — Digital I/O / analog input |
| Pin 6 | RA0 — Digital I/O / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RC5 — Digital I/O |
| Pin 9 | RC4 — Digital I/O |
| Pin 10 | RC3 — Digital I/O |
| Pin 11 | RC2 — Digital I/O |
| Pin 12 | RC1 — Digital I/O |
| Pin 13 | RC0 — Digital I/O |
| Pin 14 | VDD — Positive supply (1.8V-3.6V) |
Typical Applications
PIC16LF18325-I/SL is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Consumer Remote Controls, LED Lighting Controllers, Small Industrial Sensor Boards, Wearable Health Devices, Smart Home Edge Nodes.
Battery-Powered IoT Sensor Nodes
The PIC16LF18325-I/SL's 1.8V minimum VDD and XLP sleep currents below 1 µA make it ideal for coin-cell or 2xAA powered IoT sensor nodes. Its 14KB Flash and 1KB RAM comfortably hold BLE beacon firmware, sensor sampling routines, and over-the-air update bootloaders. The integrated 10-bit ADC samples thermistor, photodiode, or battery voltage signals directly without external amplifiers, and the CLC/NCO Core Independent Peripherals offload timer and pulse-counting tasks so the CPU can remain in sleep mode. In a typical deployment the device wakes, reads one sensor, transmits, and returns to sleep - extending coin-cell life beyond five years in duty-cycled applications.
Recommended
Consumer Remote Controls
The PIC16LF18325-I/SL is well-suited for IR/RF remote controls that demand multi-year battery life and low BOM cost. Its XLP sleep draws <100 nA with WDT enabled, and the CWG module generates 38kHz IR carrier waveforms without CPU intervention, cutting active-mode current. The 14KB Flash holds a full NEC/RC5/RC6 protocol stack plus vendor keymaps, while PPS remaps the IR LED to any available I/O pin, easing single-layer PCB layout. Operating from a single CR2032 cell (3V nominal, 2.0V cutoff), the LF variant continues to regulate cleanly down to the battery end-of-life voltage.
Recommended
LED Lighting Controllers
For small-form-factor LED lighting controllers (RGB strips, decorative fixtures, aquarium lights), the PIC16LF18325-I/SL provides four 10-bit PWM channels via the CCP module with hardware dead-band control from the CWG. The 32MHz core supports smooth color-mixing algorithms and DMX-512A or WS2812-style bit-banged protocols. Operating from a 3.3V regulated supply, the LF variant ensures quiet ADC readings for ambient-light feedback loops that adjust brightness automatically. The 14-pin SOIC and minimal external parts (one bypass cap, optional crystal) keep the BOM small for high-volume consumer SKUs.
Recommended
Small Industrial Sensor Boards
In compact 24V/12V industrial sensor modules with on-board 3.3V regulation, the PIC16LF18325-I/SL acts as the local signal-conditioning MCU. The 10-bit ADC reads 4-20mA loop or 0-10V process signals, while the CWG drives optocoupler PWM outputs for isolated signaling. Industrial temperature grade (-40°C to +85°C) covers most factory-floor enclosures. The 14-pin SOIC allows rework-friendly through-hole-like pad sizes for field service. With 14KB Flash the firmware fits full Modbus RTU slave stacks plus calibration tables, eliminating the need for external EEPROM.
Recommended
Wearable Health Devices
Wearable fitness bands and medical patches benefit from the PIC16LF18325-I/SL's 1.8V operation, low sleep current, and compact 14-pin SOIC. The MCU can sample PPG/heart-rate signals with its 10-bit ADC, drive a small OLED display via SPI, and run step-counting algorithms in active mode before returning to sleep. The CLC peripheral handles sensor pulse timing in hardware, freeing the core to remain in deep sleep most of the time. Typical operating current of <2 mA at 3.3V and 4 MHz supports multi-day wear between charges on small Li-Po batteries.
Recommended
Smart Home Edge Nodes
For smart-home edge devices like window sensors, leak detectors, and doorbell chimes, the PIC16LF18325-I/SL provides the right balance of low power, sufficient Flash, and integrated peripherals. The 14KB program memory supports Zigbee/Matter-capable firmware profiles and security stacks. Peripheral Pin Select allows flexible PCB routing between the SOIC-14 footprint and antennas or sensor pads. The LF variant's 1.8V-3.6V range matches coin-cell and 2xAAA battery packs commonly used in door/window sensors that must last 5-10 years on the original battery.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18325-I/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18325-I/SL | PIC16F18323-I/SL | PIC16LF18345-I/SL | PIC16F18345-I/SL | PIC16LF18325-E/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin SOIC (SL) | 14-pin SOIC - same | 14-pin SOIC - same | 14-pin SOIC - same | 14-pin SOIC - same | 14-pin SOIC - same |
| Program Memory (Flash) | 14 KB (8K x 14) | 14 KB (8K x 14) | 7 KB (-50%) | 28 KB (+100%) | 28 KB (+100%) | 14 KB (same) |
| Data Memory (SRAM) | 1 KB | 1 KB | 512 B | 2 KB | 2 KB | 1 KB |
| Operating Voltage (VDD) | 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 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) |
Key Differentiators
- Lowest VDD range in the family for battery-only designs (vs PIC16F18325-I/SL)
- Same-family substitute with broader supply range (vs PIC16F18325-I/SL)
- Industrial temperature grade (-40°C to +85°C) at lowest cost (vs PIC16LF18325-E/SL)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14), with a second 10 µF bulk capacitor on the same rail within 10 mm of the MCU. According to the Microchip PIC16(L)F18325 datasheet power-supply section, low-ESR ceramic X7R capacitors are recommended for the LF variant's 1.8V-3.6V range. Add a ferrite bead if the supply is shared with switching regulators to keep ripple below 50 mV pk-pk.
Do not apply voltages above 3.6V to the LF variant - permanent damage may occur. If your system rails include 5V, use the PIC16F18325-I/SL variant instead. Also note that the MCLR pin (pin 3) is shared with RA3; configure CONFIG3.MCLRE correctly to enable either external reset (MCLR mode) or digital I/O (RA3 mode) at programming time. A wrong configuration can lock the device or render pin 3 useless as a GPIO.
Keep the ICSPDAT/ICSPCLK traces (RB7/RB6 on larger packages, or PPS-routed equivalents on 14-pin SOIC) as short as possible and away from switching nodes to avoid programming failures in-circuit. According to Microchip's ICSP specification, a 4.7 kΩ pull-up on MCLR is recommended. Reserve a 6-pin header footprint for in-system programming even on production boards - field firmware updates are common for IoT nodes.
Estimated: at -40 °C to +85 °C industrial operation, the SOIC-14 junction-to-ambient thermal resistance is approximately 100 °C/W. Typical active current of 5 mA at 32 MHz and 3.3V dissipates 16.5 mW, yielding a junction rise of only 1.65 °C - well within safe limits. No heatsink is required for normal MCU operation; thermal concerns only arise if driving heavy external loads directly from I/O pins.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F18325-I/SLVAO automotive variant for AEC-Q100-grade designs. Lead-free and halogen-free matte standard for industrial/consumer use.
