PIC16LF15313-I/RF
PIC16LF15313-I/RF - 8-bit 32MHz XLP MCU, 3.5KB Flash | Microchip
The Microchip Technology PIC16LF15313-I/RF is an 8-bit full-featured microcontroller from the PIC® XLP™ 16F family, integrating 3.5 KB (2K x 14) of Flash program memory, 256 bytes of SRAM, and a rich analog/digital peripheral set into an 8-pin DFN (3x3 mm) exposed-pad package. The device runs at up to 32 MHz and operates from a wide 1.8V to 3.6V supply, making it a member of the eXtreme Low Power (XLP) family aimed at battery-friendly designs. On-chip peripherals include a 10-bit ADC with computation, a 5-bit DAC, two comparators, four 10-bit PWMs, a Complementary Waveform Generator (CWG), four Configurable Logic Cells (CLC), and EUSART plus SPI/I2C interfaces. According to the Microchip PIC16LF15313 datasheet, the part also supports Peripheral Pin Select (PPS) for flexible signal routing at the 8-pin level.
What is a PIC16 microcontroller? The PIC16 is a family of 8-bit RISC microcontrollers built around an enhanced mid-range core with a 14-bit instruction word. Within the broader taxonomy, PIC16F/LF parts sit between the PIC10/12/16 baseline families and PIC18/dsPIC33 16-bit devices; LF variants add the XLP ultra-low-power feature set for coin-cell and energy-harvesting applications. The 15313 specifically targets high-integration, low-pin-count nodes (sensor nodes, LED lighting, and capacitive-touch front-ends).
Key features include 32 MHz CPU speed, 3.5 KB self-programmable Flash, 256 B SRAM, 10-bit ADC with automated math accelerator, 5-bit DAC, two comparators with selectable references, four CLC blocks (state-machine logic that replaces discrete gates), four 10-bit PWMs, one EUSART (asynchronous/synchronous), one SPI, one I2C, and a CWG that generates complementary dead-band waveforms for half-bridge motor or FET driver control. The I/O count is six, with PPS remapping across most digital functions. Active current is roughly in the microamp range at low CPU speeds, and sleep current is well below 1 µA typical in XLP mode.
Architecturally, the device uses the PIC16 enhanced mid-range core with a 14-bit-wide instruction set, hardware multiplier, and interrupt controller supporting both core and peripheral interrupt sources. The PPS fabric re-routes digital peripheral inputs/outputs to general-purpose I/O pins, which is essential at 8 pins where peripheral count exceeds pin count. The XLP design provides nanoWatt sleep modes, ultra-low-power watchdog, and Sleep mode current measured in nanoamps.
Typical applications include IoT sensor nodes with battery or energy-harvesting power, LED lighting controllers and dimmers using the CWG and PWMs, consumer remote controls, capacitive-touch front-ends driven by CLC and comparators, and small motor or solenoid drivers driven by the CWG/PWM combination. The combination of low pin count and high peripheral density makes it well suited to space-constrained boards that need analog and digital glue logic.
When designing with this part, ensure the exposed pad is soldered to a sufficient ground copper pour for thermal and electrical performance, and route PPS-mapped signals before locking the PCB, since changing pin assignments later does not require a footprint change. For low-power sleep design, leverage the XLP sleep modes and disable unused peripherals via PMD bits to minimize quiescent current.
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