PIC16LF1579-I/GZ
PIC16LF1579-I/GZ - 8-bit MCU, 14KB, 16-bit PWM | Microchip
The Microchip Technology PIC16LF1579-I/GZ is an 8-bit PIC16 microcontroller featuring 14 KB Flash program memory, 1 KB RAM, and four independent 16-bit PWMs with 10-bit ADC, packaged in a 20-pin UQFN (4x4 mm) form factor. The device operates up to 32 MHz CPU clock speed from a 1.8 V to 3.6 V supply, targeting the LF (low-power F) variant for battery-friendly designs. Per the Microchip product family page, the PIC16(L)F157x family pairs 16-bit PWM resolution with on-chip analog to suit LED lighting, motor control, and general-purpose timing applications.
A PIC microcontroller is a Harvard-architecture RISC MCU widely used in embedded systems for deterministic control loops. PIC16 devices occupy the entry-to-mid-range tier of the Microchip portfolio (PIC10/12/16/18/24/32 families), offering 8-bit data path, low pin counts (8-64), and integrated peripherals such as ADC, PWM, comparators, and communication modules. PIC16 MCUs sit within the broader hierarchy of microcontroller -> semiconductor, balancing cost, power consumption, and capability for high-volume consumer and industrial products.
Key specifications include 14 KB (8K x 14 words) of self-programmable Flash, 1 KB SRAM, 256 bytes of EEPROM, a 10-bit ADC with up to 12 channels, four 16-bit PWMs with independent timers for high-resolution LED and motor drive, and multiple communication peripherals (EUSART, I2C/SPI, MSSP). The UQFN-20 (4x4 mm) package delivers a compact footprint suited to space-constrained PCB designs, and the exposed pad aids thermal dissipation. Industrial temperature grade (-40C to +85C) is indicated by the -I suffix in the part number.
Architecturally, the PIC16LF1579 uses an enhanced mid-range core with a 14-bit instruction word, hardware multiplier, and the nanoWatt XLP extreme-low-power technology for sleep currents in the microamp range. The integrated 16-bit PWM module is the headline differentiator versus general PIC16 mid-range MCUs that ship with 10-bit PWMs only, enabling finer dimming steps in dimmable lighting and smoother torque control in small BLDC or stepper systems. The device supports ICD (In-Circuit Debug) via standard two-wire programming/debug pins.
Typical applications include LED lighting and color-mixing drivers, DC-DC or LED buck/boost control loops, small motor and fan control, consumer appliance control boards, battery-powered IoT sensor nodes, and general-purpose timing/counter replacements. The combination of 16-bit PWM, ADC, and tiny UQFN footprint makes it attractive for high-density lighting PCB arrays where many independent channels must fit on a small board.
When designing with the PIC16LF1579-I/GZ, mind the 3.6 V absolute maximum on VDD: this is a 3.3 V logic part, not a 5 V tolerant variant. Decouple VDD/VBAT with at least 100 nF plus 10 uF bulk, place the exposed pad on a contiguous ground copper pour, and confirm programming/debug header access for in-circuit updates. For automotive-grade requirements, consider the PIC16F1579 extended-temperature counterpart instead.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone - giving procurement and design engineers a single reference for both selection and second-source validation.
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