PIC16LF1615-I/SL
PIC16LF1615-I/SL - 8-bit 32MHz 14KB Flash MCU | Microchip | SOIC-14
The Microchip Technology PIC16LF1615-I/SL is an 8-bit PIC16 microcontroller built on the PIC® XLP™ 16F family, featuring 14 KB (8K x 14 words) of Flash program memory and 32 MHz maximum CPU speed in a 14-pin SOIC package. The 'LF' prefix denotes the low-voltage, low-power variant operating from 1.8V to 3.6V, while the 'F1615' sub-family integrates peripherals such as a 10-bit ADC with Computation (ADC2), Zero-Cross Detect (ZCD), Windowed Watchdog Timer (WWDT), Cyclic Redundancy Check (CRC) with scan, and a configurable Logic Cell.
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, Flash program memory, SRAM data memory, and peripherals such as timers, ADCs, and communication interfaces on one silicon die. The '8-bit' designation refers to the ALU and data bus width, which sets the natural operand size for arithmetic, register operations, and I/O handling. PIC microcontrollers sit in the broader taxonomy of embedded microcontrollers -> microcontrollers -> microprocessors -> integrated circuits, and the PIC16 sub-family targets ultra-low-power, cost-sensitive applications using a Harvard RISC architecture.
Key features include 14 KB self-programmable Flash, 1 KB RAM, 256 B EEPROM, up to 32 MHz internal oscillator, 10-bit ADC, Zero-Cross Detect (ZCD) for TRIAC/solid-state-relay control, Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), and Peripheral Pin Select (PPS). The device also includes an integrated temperature indicator, multiple I/O ports with interrupt-on-change, and Microchip's eXtreme Low Power (XLP) technology providing nanoWatt deep-sleep modes below 50 nA typical.
The PIC16LF1615 uses Microchip's enhanced mid-range core with a 14-bit instruction word and a hardware stack of 16 levels. The 10-bit ADC supports up to 12 channels with hardware Capacitive Voltage Divider (CVD) for capacitive-touch sensing, and the CRC module supports memory integrity checking for IEC 60730 class B safety compliance. PPS allows mapping digital peripherals (UART, SPI, PWM, CLC outputs) to a wide choice of RPn pins, greatly simplifying PCB layout.
Typical applications include LED lighting controls with TRIAC dimming, capacitive touch user interfaces, battery-powered IoT sensor nodes, white-goods and home-appliance user modules, and functional-safety embedded sub-systems where CRC scan and WWDT are required for IEC 60730 / UL 60730 compliance in household appliances.
Design consideration: When migrating from the 5V PIC16F1615 to the LF variant, verify that the application's analog references, VOH levels, and peripheral operating ranges stay inside the 1.8V-3.6V supply envelope. Use the PPS register to remap peripherals before relying on default pin assignments, and place a 0.1 µF ceramic VDD bypass capacitor within 5 mm of the VDD pin.
This page synthesizes distributor pricing, drop-in alternatives in the SOIC-14 footprint, and practical design notes not found in the manufacturer datasheet alone.
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