PIC16LF1719-I/PT
PIC16LF1719-I/PT - 28KB Flash 8-bit MCU, 32MHz, 44-TQFP
The Microchip Technology PIC16LF1719-I/PT is an 8-bit PIC microcontroller from the PIC® XLP™ 16F family that delivers 32 MHz CPU performance, 28 KB of Flash program memory and 2 KB of SRAM in a 44-pin TQFP (10x10 mm) package. The "LF" prefix denotes a wide-voltage 1.8 V–3.6 V core, which makes the part directly compatible with lithium-battery and energy-harvesting rails, while the "I" suffix specifies the industrial temperature grade of -40 °C to +85 °C.
An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, on-chip Flash for program storage, on-chip RAM for data, and a rich set of mixed-signal peripherals. PIC microcontrollers use a RISC instruction set and Harvard architecture, meaning the program and data buses are physically separated to allow simultaneous fetch and operand access. Within the broader component taxonomy, PIC MCUs belong to microcontrollers -> microcontrollers and microprocessors -> integrated circuits -> semiconductors. They occupy the same functional layer as AVR, STM8 and low-end Cortex-M0 parts but trade raw 32-bit throughput for deterministic interrupt latency, ultra-low sleep current, and a stable long-life toolchain. The PIC16LF1719 specifically sits in the "intelligent-analog" sub-family, integrating op-amps, 5/8-bit DACs, 10-bit ADC, comparators, COG, NCO, ZCD, CLC, and PPS signal routing on-chip, so most glue logic that would otherwise surround a small analog MCU can be absorbed into the silicon.
Key differentiating features include four op-amps (with selectable internal/external routing), two 5-bit DACs and one 8-bit DAC, a 10-bit ADC with up to 28 channels, two comparators, and four 16-bit PWM/CCP timers. The PPS (Peripheral Pin Select) matrix lets designers remap most I/O functions to any digital pin, simplifying PCB layout for mixed-signal designs. A separate Low-Power Brown-out Reset (LPBOR) and Windowed Watchdog Timer improve system robustness in noisy industrial environments.
The architecture uses a single-cycle ALU with a 32 MHz internal oscillator, two hardware stack levels of interrupt priority, and a 14-bit instruction word. The integrated 32 MHz HFINTOSC is factory calibrated to within ±1 % across voltage and temperature, which lets many designs eliminate an external crystal and reduce BOM cost. XLP (eXtreme Low Power) technology brings the typical sleep current below 50 nA with the RTC active, a key reason this part is favored in battery-powered sensors.
Typical applications include battery-powered IoT sensor nodes, low-power wireless transmitters, white-goods and HVAC user-interface panels, handheld industrial instruments, LED lighting controllers with analog dimming, and small mixed-signal front-ends where the on-chip op-amps and DACs replace external analog ICs. In each scenario the wide-voltage core, XLP sleep current and integrated intelligent analog peripherals directly shorten design time and reduce board area.
When designing with this device, keep the analog supply (AVDD) well bypassed and lay out the analog ground as a star or split plane that returns to the device EP, since the on-chip ADC accuracy depends heavily on clean ground. Always enable the Fail-Safe Clock Monitor (FSCM) when the system clock is derived from an external crystal, and reserve a free PPS channel for in-system debug via the ICSP pins (PGC/PGD) to avoid locking the MCU during board bring-up.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement and design engineers a single reference for evaluating the PIC16LF1719-I/PT against modern low-power MCU requirements.
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