PIC16LF18325T-I/ST - 14KB Flash 32MHz 8-bit MCU | Microchip
MPN: PIC16LF18325T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.6 | $1.60 |
| 10 | $1.44 | $14.40 |
| 100 | $1.22 | $122.00 |
| 500 | $1.04 | $520.00 |
| 1,000 | $0.92 | $920.00 |
PIC16LF18325T-I/ST Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), working memory (RAM), data EEPROM, and a rich set of peripherals onto one die. PIC microcontrollers in the PIC16 family use a RISC-based Harvard architecture with a 14-bit instruction word optimized for deterministic, low-power embedded control, sitting one tier above traditional 8051 devices in code density and peripheral integration for cost-sensitive designs.
Key features of the PIC16LF18325T-I/ST include extreme low-power XLP technology with typical <1 uA sleep current, 4 x 10-bit PWM outputs, 2 CCP modules, EUSART, SPI, and I2C peripherals with Peripheral Pin Select (PPS) that allows remapping of digital peripherals to any I/O pin. The device supports up to 12 ADC channels and provides 12 MIPS performance from a 48MHz internal oscillator block.
Architecturally, the PIC16LF18325 uses Microchip's enhanced mid-range 14-bit core with a hardware multiplier, 16-level hardware stack, and nanoWatt XLP technology that enables battery lifetimes of years in sensor and IoT applications. The ADC2 block performs automated averaging, burst averaging, and threshold comparison in hardware, freeing the CPU for other tasks.
Typical applications include battery-powered IoT sensor nodes, consumer remote controls, automotive body electronics sub-modules, low-cost motor control using the CWG/NCO pair, general-purpose digital power supply housekeeping, and small appliances. Its 1.8V minimum supply also enables direct operation from single-cell lithium or two AA alkaline cells.
When designing with this part, ensure your programmer/debugger is an MPLAB PICkit, ICD, or Snap compatible toolchain. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of the pin, and configure unused I/O as outputs driven low rather than floating inputs to minimize current draw.
This page synthesizes distributor pricing, drop-in replacement candidates, and practical design notes not found on a single manufacturer page, giving procurement and design engineers a fast comparison reference.
Drop-in alternatives for PIC16LF18325T-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 PIC16LF18325T-I/ST (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:
PIC16LF18325-I/ST
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC16LF18325T-I/JQ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF18324T-I/ST
✅ Drop-In✓ In Stock
$0.91 / Unit
View Datasheet →PIC16LF18323T-I/ST
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →PIC16LF1825T-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18325T-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 / enhanced mid-range 14-bit |
| Program Memory (Flash) | 14 KB (8K x 14) |
| SRAM | 1 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz (16 MHz instruction) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 10-bit, 12 channels, ADC2 with computation |
| DAC | 5-bit |
| PWM | 4 x 10-bit (enhanced) |
| Comparators | 2 with selectable inputs |
| EUSART / SPI / I2C | 1 EUSART, 1 SPI, 1 I2C |
| Core Independent Peripherals | CLC, NCO, CWG, PPS |
| Timers | 2 x 8-bit, 2 x 16-bit |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 14-TSSOP (ST) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
PIC16LF18325T-I/ST Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V - 3.6V) |
| Pin 2 | RA5 — Bidirectional I/O, analog/digital; PPS-capable |
| Pin 3 | RA4 — Bidirectional I/O, analog/digital; PPS-capable |
| Pin 4 | RA3/MCLR — Bidirectional I/O with MCLR reset on weak pull-up |
| Pin 5 | RA2 — Bidirectional I/O, analog/digital; PPS-capable |
| Pin 6 | RA1 — Bidirectional I/O, analog/digital; PPS-capable |
| Pin 7 | RA0 — Bidirectional I/O, analog/digital; PPS-capable |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC0 — Bidirectional I/O; PPS-capable |
| Pin 10 | RC1 — Bidirectional I/O; PPS-capable |
| Pin 11 | RC2 — Bidirectional I/O; PPS-capable |
| Pin 12 | RC3 — Bidirectional I/O; PPS-capable |
| Pin 13 | RC4 — Bidirectional I/O; PPS-capable |
| Pin 14 | RC5 — Bidirectional I/O; PPS-capable |
Typical Applications
PIC16LF18325T-I/ST is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Automotive Body Electronics Sub-Modules, Consumer Remote Control and HID Devices, Low-Cost DC Motor and Fan Control, Digital Power Supply Housekeeping, Small Appliance and Home Electronics.
Battery-Powered IoT Sensor Nodes
The PIC16LF18325T-I/ST's nanoWatt XLP technology with 30 nA typical sleep current and the ADC2 block with hardware threshold comparison make this part a natural fit for years-long battery-life IoT sensor nodes. Operating from 1.8V to 3.6V lets it run directly from a CR2032 coin cell or two AA cells in series, eliminating the boost regulator. The 14KB Flash holds a LoRaWAN MAC or BLE peripheral stack, while the 256B EEPROM stores calibration constants and last-sample buffers across deep-sleep cycles. Combined with the integrated SPI/I2C, it talks to SHT30, BME280, or LIS3DHTR sensors without a wake-up controller. Designers should route the 32kHz crystal on SOSC pins to enable RTC-driven wakeups and use deep sleep with Watchdog Timer only. This combination typically achieves 5-10 year operation on a 240 mAh CR2032 at a 1-min sample duty cycle.
Recommended
Automotive Body Electronics Sub-Modules
The PIC16LF18325T-I/ST complements Microchip's PIC18 cousins in automotive body-electronics sub-modules where the part number's -I (industrial) prefix is acceptable for cabin applications and a 1.8V-3.6V rail handles sensors fed from the body-control 12V bus via small LDO. The CWG/NCO pair generates precise LED or buzzer drive waveforms without CPU intervention, freeing the 32MHz core for CAN-LIN message handling via the EUSART or via a CAN SPI controller companion. The TSSOP-14 fits in tight dashboard clusters and seat-control panels where the 14 pins suffice for switching and reading diagnostic data. ADC2 with hardware averaging captures battery voltage, temperature, and switch position with deterministic timing. Designers should verify industrial-grade temperature span (-40C to +85C) against any module-level AEC-Q100 requirement before reuse in hood or underbody applications.
Recommended
Consumer Remote Control and HID Devices
Consumer IR remote controls benefit from the PIC16LF18325T-I/ST's 14KB Flash for complex button-mapping firmware and 1KB SRAM for state buffering during multi-press gestures. The 5-bit DAC together with the CWG generates accurate IR-modulated carrier frequencies (typically 36 kHz-56 kHz) without CPU load, while the comparator verifies the photodiode return path on the same die. nanoWatt XLP with RTC draws so little current that two AAA cells can power the remote for years. USB-CDC or BLE HID controllers can be SPI-attached, where PPS flexibility simplifies pin usage and reduces PCB trace crossings. Consumers expect 50,000+ key presses between battery changes, which the MCU easily achieves.
Recommended
Low-Cost DC Motor and Fan Control
For low-cost BLDC fan, pump, or small DC motor control, the PIC16LF18325T-I/ST provides one 10-bit PWM channel pair plus the CWG/NCO pair that synthesize dead-band-aware complementary drive at up to 32 MHz core speed. The 14-bit CIP motor-control loop handles commutation timing in hardware so the CPU keeps the PID loop. Back-EMF ADC2 inputs read zero-cross timing without an extra analog front-end, and the integrated comparator provides hardware-overcurrent protection via the CWG fault input. Selecting TSSOP-14 keeps the BOM small enough for sub-$3 fully-assembled 12V PC fan variants. Designers should use the SSOP footprint on noisy boards, but TSSOP-14 fits most quiet office fan solutions.
Recommended
Digital Power Supply Housekeeping
Digital power-supply housekeeping blocks - fans, LEDs, telemetry, sequencing - use the PIC16LF18325T-I/ST for non-primary control tasks where a digital signal controller would be overkill. The firmware reads 12 ADC2 channels to monitor rails, drives status LEDs through PWM, logs faults to EEPROM, and handles PMBus or simple SMBus telemetry via I2C. The 5-bit DAC sets a slow analog reference for thermal tuning, and PPS routes SCL/SDA anywhere. Fast-responding comparators implement overcurrent MUXing in <1 us. TSSOP-14 + a few passives delivers full housekeeping for a 1U server CRPS module. Module developers confirm a single MCU handles all telemetry while hardware PWMs drive cooling fans.
Recommended
Small Appliance and Home Electronics
Small kitchen and home appliances (coffee makers, sous-vide sticks, smart kettles, slow cookers) use the PIC16LF18325T-I/ST as the primary 8-bit controller because 14KB Flash fits PID + UI state machine + BLE provisioning without external memory. The NCO precision frequency output drives triac phase control for heater elements with sub-microsecond resolution. ADC2 channels monitor temperature (NTC), water level, and mains-zero-crossing synchronously. The CIP blocks allow the heater control loop to run in hardware while the CPU handles the user display via SPI. Designers use the TSSOP-14 to fit control PCBs into compact housings and appreciate the wide 1.8V-3.6V range for global mains adapters.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18325T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18325-I/ST | PIC16LF18324T-I/ST | PIC16LF18323T-I/ST | PIC16LF1825T-I/ST |
|---|---|---|---|---|---|
| Package | TSSOP-14 (ST) | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 14 KB | 14 KB | 7 KB (-50%) | 7 KB (-50%) | 14 KB (same) |
| SRAM | 1 KB | 1 KB | 512 B (-50%) | 256 B (-74%) | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| I/O Pins | 12 | 12 | 12 | 6 (-50%) | 11 |
| ADC Resolution / Channels | 10-bit / 12 ch (ADC2) | 10-bit / 12 ch (ADC2) | 10-bit / 12 ch (ADC2) | 10-bit / 11 ch (ADC2) | 10-bit / 9 ch (ADC legacy) |
| Core Independent Peripherals (CLC/NCO/CWG) | Yes | Yes | Yes | Yes | No |
| 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 3.6 V | 1.8 V to 3.6 V |
| Unit Price @ 1k pcs (Oct 2026) | ~$0.92 | ~$0.92 | ~$0.85 | ~$0.78 | ~$0.95 |
Key Differentiators
- Highest-in-family Flash + SRAM density within TSSOP-14 footprint (vs PIC16LF18324T-I/ST)
- ADC2 with hardware averaging + CIP blocks (CLC, NCO, CWG) (vs PIC16LF1825T-I/ST)
- Same-package migration path across Flash tiers (vs PIC16LF18323T-I/ST)
Design Notes
Estimated: At 32 MHz active, the PIC16LF18325T-I/ST draws approximately 3-5 mA from 3.3V. Decouple VDD with a 100 nF X7R ceramic capacitor placed within 5 mm of the pin. For battery designs operating below 2.0V, place a 10 uF bulk cap near the part to handle the inrush of SPI flash bursts. The LF family supports sleep current as low as 30 nA (Watchdog Timer only); achieving that in-circuit requires disabling the BOR and configuring all unused I/Os as low outputs.
Place the TSSOP-14 on a single-layer PCB with the VDD and VSS pins on opposite sides so the package acts as a natural ground-current return path. Keep the 32 kHz crystal traces under 5 mm for SOSC operation. For PPS-based designs, leave all PPS-capable pins routed to test pads - this lets you re-route digital peripherals (UART, SPI, PWM) in software without PCB respins, a key advantage when migrating between PIC16LF18323, -18324, and -18325 with the same footprint.
Do not exceed 3.6V on any pin if you intend to migrate to the LF parts; the PIC16LF18324T-I/ST and PIC16LF18325T-I/ST share the LF voltage range, but the non-LF PIC16F1825T-I/ST supports 2.3V-5.5V. Configure MCLR as a reset input (not an I/O) when used in noisy motor designs, or use the internal MCLR-disabled configuration to recover an extra I/O. Always enable the WDT in a multi-second interval - lost firmware status from a watchdog miss is a common production failure root cause on sub-$1 PCBAs.
Estimated: TSSOP-14 packages typically have a theta_JA of approximately 80-100 C/W in still air. At a worst-case 5 mA x 3.6V operating load, junction temperature rise is well below 1 C - this part has no thermal concerns in normal operation. For continuous high-activity designs (32 MHz with full I/O toggling), the rise approaches 2-3 C, still negligible. No heatsink or special copper pour is required.
Compliance Information
Industrial temperature grade -40C to +85C. Industrial parts are not AEC-Q100 qualified; review PIC16F18325 automotive variants if required. RoHS and REACH confirmed by Microchip product page.
