PIC16LF18425T-I/ST - 8-Bit 32MHz MCU 14KB Flash | Microchip
MPN: PIC16LF18425T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.36 | $13.60 |
| 100 | $1.28 | $128.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.1 | $1,100.00 |
PIC16LF18425T-I/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. It is one of the most widely deployed computing architectures in the world because of its deterministic instruction cycle, low cost, low power consumption, and ease of programming. Within the broader semiconductor hierarchy, an 8-bit MCU is a sub-category of microcontroller -> embedded processor -> integrated circuit. The PIC16 core belongs to the Reduced Instruction Set Computer (RISC) family and executes most instructions in one instruction cycle, giving it deterministic throughput that is highly valued in real-time control loops.
Key features include operation from 1.8V to 3.6V, an operating temperature range of -40C to +85C (industrial grade, indicated by the "I" in the part number), 11 timers, a 12-bit Analog-to-Digital Converter with Computation (ADCC) supporting automatic averaging, filtering and threshold comparison, and communication peripherals including EUSART, SPI, and I2C. The XLP nanoWatt technology enables sleep currents in the nanoamp range, which is critical for battery-powered applications such as IoT sensors and wearables.
Architecturally, the device combines a Harvard-bus PIC16 CPU core with on-chip debug support, a wide array of Core Independent Peripherals (CIPs) that offload tasks from the CPU, and the Peripheral Pin Select (PPS) feature that allows digital peripheral I/O to be remapped to a wide choice of pins. This combination gives designers a flexible platform for mixed-signal embedded designs.
Typical applications include low-power IoT sensor nodes, battery-powered wearables, consumer appliances, LED lighting controllers, automotive body and sensor nodes, and small industrial control boards. The 14-pin TSSOP footprint with PPS makes it suitable for compact designs where pin flexibility is essential.
When designing with this device, ensure the power supply rail stays within the 1.8V to 3.6V window and provide proper decoupling close to the VDD/VSS pins. Note that the "LF" prefix indicates the low-voltage (1.8V-3.6V) variant - if a 5V supply rail is required, select the PIC16F18425 (non-LF) version instead, which shares the same 14-pin TSSOP pinout. The trailing "T" denotes tape-and-reel packaging for high-volume assembly.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone, so engineers can quickly evaluate the PIC16LF18425T-I/ST against drop-in substitutes for sourcing risk mitigation.
Drop-in alternatives for PIC16LF18425T-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 PIC16LF18425T-I/ST (same form factor and footprint) — differing in ADC, Operating Temperature, Program Memory (Flash), Core, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18424T-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18425-I/ST
✅ Drop-In✓ In Stock
$1.53 / Unit
View Datasheet →PIC16LF18325T-I/ST
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF18324T-I/ST
✅ Drop-In✓ In Stock
$0.91 / Unit
View Datasheet →PIC16LF18424T-I/JQ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.88 / Unit
View Datasheet →PIC16LF18425T-I/ST Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 14-TSSOP |
| Pin Count | 14 |
| Mounting Type | Surface Mount |
| ADC | 12-bit ADCC with Computation |
| DAC | 5-bit DAC |
| Comparators | 2 |
| PWM Channels | 2 |
| Timers | 11 |
| Communication | EUSART, SPI, I2C |
| Low-Power Technology | XLP nanoWatt |
| RoHS Status | Compliant |
PIC16LF18425T-I/ST Pin Configuration
| Pin 1 | RA0/ICSPDAT — Bidirectional I/O; ICSP data; PPS-remappable |
| Pin 2 | RA1/ICSPCLK — Bidirectional I/O; ICSP clock; PPS-remappable |
| Pin 3 | RA2 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 4 | RA3/MCLR/VPP — Input only; Master Clear (reset); programming voltage input |
| Pin 5 | RA4 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 6 | RA5 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA6 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 9 | RA7 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 10 | RC0 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 11 | RC1 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 12 | RC2 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 13 | RC3 — Bidirectional I/O; analog input; PPS-remappable |
| Pin 14 | VDD — Positive supply (1.8 V to 3.6 V) |
Typical Applications
PIC16LF18425T-I/ST is suitable for 8 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitoring Device, Consumer Appliance Control Board, LED Lighting Controller, Industrial Sensor Transmitter, Automotive Body and Sensor Node, Smart Home Edge Controller, USB HID / CDC Bridge Device.
Battery-Powered IoT Sensor Node
The PIC16LF18425T-I/ST is well-matched to battery-powered IoT sensor nodes because its 1.8V-3.6V supply window, nanoamp XLP sleep current, and integrated 12-bit ADCC eliminate the need for an external ADC. The 14KB Flash accommodates IPv6/6LoWPAN or LoRaWAN stack plus sensor drivers, while 1KB SRAM supports buffering of ADC samples and stack frames. The 32MHz internal oscillator removes the external crystal on most designs, reducing the BOM by $0.20 or more. Two EUSART/SPI/I2C peripherals support modules such as SX1276 LoRa transceivers, BLE modules, or Wi-Fi coprocessors. Compared with discrete ADCs plus op-amps, the ADCC's automatic averaging and threshold comparison modes cut firmware development time for thermocouple, RTD, and strain-gauge front-ends.
Recommended
Wearable Health Monitoring Device
For wearable health monitors (heart-rate, SpO2, body-temperature patches), the PIC16LF18425T-I/ST delivers the right blend of low power, small footprint, and analog integration. The TSSOP-14 package fits into 4x4 mm PCB areas, and XLP nanoWatt sleep currents below 100 nA extend coin-cell battery life to weeks or months. The 12-bit ADCC with hardware averaging captures photoplethysmography (PPG) and bioimpedance signals with adequate resolution, while the CWG and configurable logic cells drive LED pulse sequences without CPU intervention. Two comparators implement window detection for battery voltage and over-temperature alarms, offloading the CPU. Compared with ARM Cortex-M0+ alternatives, the PIC16LF18425T-I/ST consumes less active current and offers a faster wake-up time from sleep.
Recommended
Consumer Appliance Control Board
The PIC16LF18425T-I/ST fits compact consumer appliance control boards (coffee machines, blenders, kitchen hoods) where cost, BOM integration, and reliability matter more than raw CPU horsepower. The TSSOP-14 footprint plus Peripheral Pin Select (PPS) simplifies PCB routing by allowing peripheral signals to be reassigned to nearly any I/O pin. The two PWMs and Complementary Waveform Generator (CWG) drive motor and valve loads directly, the 5-bit DAC generates offset voltages for sensor bridges, and the 12-bit ADCC reads thermistor, pressure, and flow-sensor signals. Compared with discrete op-amp plus timer designs, the integrated peripherals reduce part count from 5-7 ICs to one MCU.
Recommended
LED Lighting Controller
The PIC16LF18425T-I/ST is a strong fit for digitally-controlled LED lighting products such as tunable-white bulbs, RGB strips, and architectural fixtures. The 12-bit ADCC reads ambient light sensors and color-mixing feedback, while the CWG generates high-resolution PWM at up to 32MHz for flicker-free dimming across the full 0-100% range. Two independent PWMs drive color and white channels simultaneously without CPU intervention, freeing the MCU to handle wireless control (via SPI-attached BLE module) or DALI/0-10V dimming protocols. Compared with discrete PWM ICs, this MCU integrates protocol handling, dimming curves, and NVM-backed configuration in one part.
Recommended
Industrial Sensor Transmitter
For 4-20 mA loop-powered or 24V industrial sensor transmitters, the PIC16LF18425T-I/ST offers the precision and peripheral integration needed for thermocouple, RTD, pressure, and flow transmitters. The 12-bit ADCC (with optional 16-bit oversampling) achieves better than 0.1% measurement accuracy, while the integrated temperature sensor supports cold-junction compensation. The 1.8V minimum supply lets the MCU start from a low-voltage drop before the loop settles, and the -40C to +85C industrial temperature range handles most factory environments. Compared with separate ADC + MCU designs, the integrated ADCC reduces BOM cost by approximately $1.50 and PCB area by 30%.
Recommended
Automotive Body and Sensor Node
Although the PIC16LF18425T-I/ST itself is not AEC-Q100 qualified, the same die is available in automotive-qualified PIC16F18425T-I/ST (Q1 / VAO) variants. For non-critical body and sensor nodes such as interior lighting controllers, window switches, mirror actuators, and seat-occupancy sensors, this MCU handles capacitive-touch sensing (via CTMU + ADCC), PWM-controlled motor drive (via CWG), and LIN-bus communication (via EUSART). The 14-TSSOP package and 32MHz CPU ensure responsive LIN message handling within tight in-frame timing budgets. Compared with bare 5V logic ICs, this MCU provides programmability and reduces harness complexity.
Recommended
Smart Home Edge Controller
The PIC16LF18425T-I/ST fits compact smart-home edge controllers such as Zigbee/BLE button panels, occupancy detectors, and door/window sensors that aggregate multiple low-speed I/O. The 14-TSSOP footprint and Peripheral Pin Select simplify the PCB layout for densely-packed connector boards, while the 12-bit ADCC reads light, motion, and humidity sensors directly. Two PWMs drive status LEDs and piezo buzzers, and the EUSART/SPI/I2C connects to host radio modules. Compared with single-purpose sensor ICs, this MCU's programmability lets one part serve multiple SKUs with different firmware builds, simplifying inventory.
Recommended
USB HID / CDC Bridge Device
For low-cost USB-to-UART or USB-to-SPI/I2C bridge devices (debug probes, configuration tools, programming dongles), the PIC16LF18425T-I/ST can implement USB HID or CDC class devices via the EUSART and a software USB stack on a single I/O pin (low-speed USB via interrupt-driven bit-banging). The 32MHz CPU provides enough MIPS for USB 1.1 low-speed polling and protocol handling, while the 14KB Flash accommodates both the USB stack and command interpreter. Compared with dedicated bridge ICs (FTDI, CP210x), this approach saves BOM cost when the bridge firmware can share the MCU with another application function, such as field configuration or diagnostics.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18425T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18424T-I/ST | PIC16LF18425-I/ST | PIC16LF18325T-I/ST | PIC16LF18324T-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Program Memory (Flash) | 14 KB | 7 KB | 14 KB | 14 KB | 7 KB |
| Data SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage (VDD) | 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 |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC |
| PWM Channels | 2 | 2 | 2 | 2 | 2 |
Key Differentiators
- 12-bit ADCC with hardware averaging and threshold detection, vs 10-bit ADC on older PIC16LF183xx family (vs PIC16LF18325T-I/ST)
- Complementary Waveform Generator (CWG) and Configurable Logic Cells (CLC), not present on older PIC16F182x family (vs PIC16LF1825T-I/SL)
- XLP nanoWatt technology with sub-100 nA sleep current (vs PIC16F18425T-I/ST (non-LF variant))
- 14KB Flash vs 7KB on PIC16LF18424, with identical peripherals and pinout (vs PIC16LF18424T-I/ST)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14) with the ground-side trace returning directly to VSS (pin 7) without sharing a via with other high-current returns. For designs with frequent ADC sampling or SPI bus activity at 8 MHz+, add a 10 uF bulk capacitor near the MCU; this reduces VDD ripple below 20 mV and improves ADC accuracy. The LF prefix requires VDD stays inside 1.8V-3.6V; an external voltage supervisor (such as MCP100 or TC54) is recommended for battery applications where VDD may droop below 1.8V at end-of-life.
The 14-TSSOP pin pitch is 0.65 mm. Use 0.20 mm trace width between pads with 0.30 mm clearance, and avoid routing any signal trace beneath the IC body. Ground-pour the entire top layer under the MCU with stitching vias to the ground plane on 2 mm pitch to provide a low-impedance thermal and EMI return path. For designs that need ICSP debugging, expose pins 1 (RA0/ICSPDAT), 2 (RA1/ICSPCLK), and 4 (RA3/MCLR/VPP) on a 0.1-inch header or test pad pattern to allow in-circuit programming.
Do not connect RA3/MCLR to ground directly - this pin must be tied to VDD through a 10 kohm pull-up resistor for normal operation. Programming voltage (VPP) is applied to this pin only during ICSP, so the resistor does not interfere with debug. Also note that the Peripheral Pin Select (PPS) feature requires unlocking the PPS registers via the PPSLOCKED bit sequence before changing remap assignments; failing to unlock causes silent configuration failures. Finally, the "T" suffix indicates tape-and-reel packaging - for prototype quantities, the PIC16LF18425-I/ST (tube packaging) may be easier to handle manually.
Estimated: with 14 KB of Flash and a 32 MHz internal oscillator, the SPI bus can run up to 8 MHz (FOSC/4) reliably. For long PCB traces (>50 mm) between the MCU and an SPI peripheral, add a 33 ohm series resistor at the MCU end of the SCK/MOSI lines to dampen reflections. The I2C bus typically runs at 100 kHz or 400 kHz; for 400 kHz I2C, ensure pull-up resistors are 1 kohm to 2.2 kohm and total bus capacitance stays below 200 pF (typical limit for 400 kHz Fast Mode).
The PIC16LF18425T-I/ST in 14-TSSOP has a thermal resistance (theta_JA) of approximately 100 C/W when mounted on a standard 4-layer JEDEC test board. At full 32 MHz active mode drawing ~3 mA from 3.3V, the MCU dissipates 10 mW, leading to a junction temperature rise of only 1 C above ambient - thermal management is not a concern for typical 8-bit PIC16 designs.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the PIC16LF18425T-I/ST is industrial-grade only. For AEC-Q100 qualified equivalent in the same die/package, look for the -VAO / Q1 suffix variants. Halogen-free status not explicitly stated in distributor listings; treated as unknown per Data Authenticity Rule 2.
