PIC16LF18455T-I/SO - 8-bit MCU, 14KB Flash, 32MHz, 28-SOIC | Microchip
MPN: PIC16LF18455T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.68 | $168.00 |
| 500 | $1.49 | $745.00 |
| 1,000 | $1.32 | $1,320.00 |
| 3,000 | $1.18 | $3,540.00 |
PIC16LF18455T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of peripheral modules into one package. The PIC16 family occupies the mid-range tier of Microchip's 8-bit portfolio, sitting between the baseline PIC10/PIC12 and the high-end PIC18 families, and is widely used for general-purpose embedded control, sensor interfacing, and low-power IoT nodes.
Key features of the PIC16LF18455 include a 12-bit ADC with Computation (ADC2) offering 24 channels, a 5-bit DAC, two comparators, two 10-bit PWMs with complementary waveform generation, four Configurable Logic Cells (CLC), two EUSART, two MSSP (SPI/I2C), and a Complementary Waveform Generator (CWG). It provides 26 general-purpose I/O pins, supports up to 11 timers, and includes Memory Access Partitioning (MAP) for bootloader-style code protection and Device Information Area (DIA) for unique serialization.
The device's Intelligent Analog and Core Independent Peripherals (CIPs) architecture allows many tasks - signal conditioning, waveform generation, sensor fusion - to execute autonomously in hardware without CPU intervention. Combined with eXtreme Low Power modes (down to sub-microamp sleep currents), the PIC16LF18455 is engineered for always-on, sensor-front-end designs where the CPU must sleep for extended periods to preserve battery life.
Typical applications include IoT sensor nodes, battery-powered medical devices, consumer appliances, LED lighting controllers, automotive body electronics (non-safety), industrial sensor hubs, and USB-to-UART bridge dongles. The wide operating voltage range also supports direct 2xAA or coin-cell operation without external LDO stages.
When designing with this MCU, ensure the ICSP/PGD/PGC pins are accessible for in-circuit programming and that the MCLR pull-up is correctly configured to avoid unintentional resets. Designers should consult Microchip's MPLAB X IDE and XC8 compiler for code development, and use the PIC16F18455 Curiosity Nano board for rapid prototyping.
This page synthesizes distributor pricing, drop-in alternatives within the SOIC-28 footprint, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF18455T-I/SO — 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 PIC16LF18455T-I/SO (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18455T-I/SO
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC16F18456T-I/SO
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16LF18446T-I/SO
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →PIC16F18146T-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18455T-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory Size | 14 KB (8K x 14 words) Flash |
| RAM Size | 1 KB |
| EEPROM Size | 256 bytes |
| Maximum Clock Frequency | 32 MHz |
| Data Bus Width | 8 bit |
| Operating Supply Voltage | 1.8 V to 3.6 V |
| Number of I/O Pins | 26 |
| ADC Resolution | 12 bit (24 channels, ADC2) |
| DAC | 1 x 5-bit |
| Comparators | 2 |
| PWM Modules | 2 x 10-bit |
| Communication Interfaces | 2 x EUSART, 2 x MSSP (SPI/I2C) |
| Configurable Logic Cells (CLC) | 4 |
| Timers | 11 |
| Package | 28-SOIC (7.50 mm width) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Oscillator Type | Internal |
| Low-Power Technology | nanoWatt XLP |
| Special Features | Memory Access Partitioning (MAP), Device Information Area (DIA), CWG, ICSP |
PIC16LF18455T-I/SO 28-soic (7.50 mm width) Pin Configuration Guide
Pin configuration for PIC16LF18455T-I/SO (28-soic (7.50 mm width) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC16LF18455T-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC16LF18455T-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Consumer Appliance Control Boards, Portable Medical Monitoring Devices, LED Lighting Controllers and Drivers, Automotive Body Electronics Modules, Industrial Sensor Hubs and Data Loggers.
Battery-Powered IoT Sensor Nodes
The PIC16LF18455T-I/SO is ideally suited for IoT sensor nodes where battery life is paramount. Its nanoWatt XLP technology delivers sub-microamp sleep currents, and the 12-bit ADC2 with hardware averaging plus the four Configurable Logic Cells (CLC) allow periodic sensor sampling and threshold detection while the CPU stays in deep sleep. Operating from 1.8 V to 3.6 V, it draws power directly from 2xAA alkaline or single-cell Li-ion batteries without a separate LDO. The 14KB Flash accommodates over-the-air firmware update bootloaders via MAP partitioning, and the 26 GPIO pins easily multiplex I2C sensor buses, SPI displays, and interrupt lines. Pair it with an external sub-GHz or BLE module for full wireless node capability.
Recommended
Consumer Appliance Control Boards
In consumer appliances such as coffee makers, washing machines, and small kitchen electronics, the PIC16LF18455T-I/SO provides the precise timing and sensor interfacing required. Its two 10-bit PWM channels with Complementary Waveform Generator (CWG) directly drive motor half-bridges and triac-style heater control, while the two comparators handle over-current and zero-cross detection without CPU load. The 1KB SRAM is sufficient for menu state machines and HMI debouncing, and 256 bytes of EEPROM stores user preferences that survive power cycles. The wide 1.8 V to 3.6 V supply range simplifies designs using rectified mains plus a small switching converter.
Recommended
Portable Medical Monitoring Devices
The PIC16LF18455T-I/SO fits portable medical monitoring such as pulse oximeters, thermometers, and pill dispensers, where deterministic low-power operation and EMI robustness are critical. Its 12-bit ADC2 with up to 24 channels supports multi-signal acquisition (temperature, battery voltage, photodiode current), and the CLC and CWG offload waveform generation so the CPU can sleep between measurements, extending battery life to months. The 1.8 V minimum supply enables direct coin-cell operation. Designers benefit from the deterministic interrupt latency of the PIC16 enhanced mid-range core, which simplifies medical-device firmware certification by providing predictable response times.
Recommended
LED Lighting Controllers and Drivers
For LED lighting controllers - architectural dimmers, RGBW strips, and horticultural fixtures - the PIC16LF18455T-I/SO delivers the high-resolution PWM and complementary drive needed for smooth dimming and color mixing. Its two 10-bit PWMs and the CWG module produce center-aligned complementary waveforms with programmable dead-band, directly driving high-side/low-side MOSFET half-bridges for buck or boost LED drivers. The two EUSART peripherals accept DMX-512 or DALI control signals from upstream controllers, while the MSSP handles I2C digital LED drivers like the LP50xx series. Low sleep current keeps standby power below regulatory limits for Energy Star compliance.
Recommended
Automotive Body Electronics Modules
The PIC16LF18455T-I/SO (industrial grade, -40 C to +85 C) handles non-safety body-electronics modules such as ambient lighting controllers, seat-position memory, mirror adjusters, and HVAC blend-door actuators. Its 12-bit ADC reads potentiometer-based position sensors, and the comparators handle over-current detection on motor drive stages. The wide 1.8 V to 3.6 V supply is compatible with automotive 3.3 V rails, and the LIN-capable EUSART pairs with LIN transceivers for body-network connectivity. For designs requiring the full -40 C to +125 C automotive grade, the extended-temperature PIC16F18455-E variant should be selected instead.
Recommended
Industrial Sensor Hubs and Data Loggers
For industrial sensor hubs aggregating 4-20 mA loops, RTDs, and digital sensors, the PIC16LF18455T-I/SO offers the analog density and serial connectivity required. Its 24-channel 12-bit ADC2 handles multi-sensor polling, and the two EUSART peripherals simultaneously communicate with a Modbus master and a local HMI display, while MSSP drives I2C sensor arrays. The 14KB Flash fits industrial protocol stacks and calibration tables, and the 256-byte EEPROM stores per-unit trim values. Core Independent Peripherals (CIPs) - CLC, CWG, NCO - implement signal conditioning in hardware, freeing the CPU for protocol handling.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18455T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18455T-I/SO | PIC16F18456T-I/SO | PIC16LF18446T-I/SO | PIC16F18146T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Flash Memory | 14 KB | 14 KB | 28 KB | 8 KB | 14 KB |
| RAM | 1 KB | 1 KB | 2 KB | 512 B | 1 KB |
| Supply Voltage Range | 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 |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC Resolution | 12-bit (24 ch, ADC2) | 12-bit (24 ch, ADC2) | 12-bit (24 ch, ADC2) | 12-bit (17 ch, ADC2) | 12-bit (newer ADC) |
| EEPROM | 256 B | 256 B | 256 B | 128 B | 256 B |
| Approx. 1k-piece Price (USD) | $1.32 | $1.40 | $1.55 | $1.20 | $1.45 |
Key Differentiators
- Lowest-voltage operation in 184xx family (vs PIC16F18455T-I/SO)
- Best memory density in SOIC-28 PIC16F184xx tier (vs PIC16LF18446T-I/SO)
- Smaller memory footprint option in same package (vs PIC16F18456T-I/SO)
Design Notes
Estimated: at VDD=3.3V, 32MHz active mode, the PIC16LF18455 typically draws 5-8 mA; in sleep mode with ADC2 disabled, current drops below 1 uA. Always place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor near the IC. For battery applications, route the MCLR pull-up to the same rail and use the internal weak pull-ups on the ICSP pins to avoid parasitic current paths during sleep.
Keep the ICSP/PGD/PGC traces short (under 50 mm) and away from switching nodes to ensure reliable in-circuit programming and debugging. The SOIC-28 thermal pad is not present on this package - heat dissipation is through the leads. For continuous high-current GPIO toggling, distribute loads across multiple ports and avoid concentrating current on a single VDD/VSS pair to prevent IR drop and ground bounce.
Do not leave the MCLR pin floating; either tie it to VDD through a 10 kohm resistor or to the programmer/debugger's MCLR line. The LF (1.8V-3.6V) variant will be damaged if VDD exceeds 3.6V - confirm supply rail voltage before substituting for the non-LF PIC16F18455. When using the ADC2, ensure the acquisition time is configured for the source impedance, and enable the ADC dedicated FRC oscillator for lowest digital switching noise.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified (choose PIC16F18455-E/SO extended-temperature variant for automotive).
