PIC16LF18854-E/SS
PIC16LF18854-E/SS - 7KB Flash 32MHz XLP 8-bit MCU | Microchip
The Microchip Technology PIC16LF18854-E/SS is an 8-bit PIC16 microcontroller with 7 KB Flash, 512 B RAM, and 256 B EEPROM, housed in a 28-pin SSOP package. It runs up to 32 MHz from a 1.8 V to 3.6 V supply and integrates 10-bit ADC2, 5-bit DAC, comparators, PWM, CWG, SMT, HLT, WWDT, SCAN/CRC, ZCD, and PPS.
An 8-bit microcontroller (MCU) is a small, low-cost processor that combines a CPU, non-volatile program memory (Flash), volatile working memory (RAM), and on-chip peripherals (timers, ADC, communication, I/O) into a single IC. 8-bit MCUs such as the PIC16 family sit within the broader taxonomy of microcontrollers -> embedded processors -> digital ICs -> semiconductors. The "LF" prefix denotes the eXtreme Low Power (XLP) variant, designed for battery-powered applications where nanoWatt sleep currents and active-mode efficiency are critical.
Key features include 25 configurable I/O pins, an internal 32 MHz oscillator, 10-bit ADC with computation (ADC2), a 5-bit DAC, zero-crossing detection (ZCD), complementary waveform generator (CWG), signal measurement timer (SMT), hardware limit timer (HLT), windowed watchdog (WWDT), scan/CRC, peripheral pin select (PPS), and Core Independent Peripherals (CIP) that offload tasks from the CPU. The 28-SSOP package is the medium-density pin-count option in the PIC16F1885x/7x family.
Architecturally, the PIC16LF18854 uses a RISC-based PIC16 core with a 14-bit instruction word and a 2-stage pipeline, achieving up to 16 MIPS at 32 MHz. The XLP technology provides multiple low-power modes (DOZE, IDLE, SLEEP) with a typical sleep current below 50 nA, and the integrated voltage regulator supports operation down to 1.8 V, enabling single-cell lithium or two-cell alkaline battery operation.
Typical applications include low-power IoT sensor nodes, battery-powered home automation, consumer white goods, capacitive-touch user interfaces, LED lighting controllers, and small motor-control BLDC or fan drivers. The combination of CIPs and XLP makes the part especially attractive for always-on edge devices where the CPU can spend most of its time in sleep.
When designing with this device, pay attention to the Microchip Code Configurator (MCC) generated peripheral setup and the PPS mapping, because incorrect PPS assignments are the most common source of firmware faults on first bring-up. Decouple VDD with a 100 nF + 1 µF pair placed within a few millimetres of the supply pins, and leave the MCLR pin either pulled high or routed to the programmer header.
This page synthesizes distributor pricing, drop-in SSOP-28 alternatives, and practical XLP design notes not collected in a single place in the manufacturer datasheet.
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