PIC16LF1579-I/SS - 32MHz 8-bit MCU, 14KB Flash, 20-SSOP | Microchip
N.º de pieza: PIC16LF1579-I/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.65 | $1,65 |
| 10 | $1.49 | $14,90 |
| 100 | $1.32 | $132,00 |
| 500 | $1.18 | $590,00 |
| 1.000 | $1.05 | $1.050,00 |
PIC16LF1579-I/SS Descripción general
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, program memory, data RAM, and peripherals around an 8-bit data path. The PIC16 family specifically falls within the broader Microchip MCU portfolio (PIC10/12/16/18/24/32), targeting low-power embedded applications where deterministic performance, low cost, and small footprint outweigh the need for 32-bit throughput. Within this hierarchy, the PIC16LF1579 sits in the enhanced mid-range core family with 16-bit PWM peripherals targeted at LED lighting, motor control, and power conversion.
Key features include four 16-bit PWMs that deliver high-resolution output for LED dimming and digital power conversion, along with a 32 MHz internal oscillator that eliminates the need for an external crystal in many applications. The device also includes a Complementary Waveform Generator with dead-band control for half-bridge and full-bridge topologies, plus PPS for flexible peripheral-to-pin routing that simplifies PCB layout.
The architecture uses a Harvard-style design with separate program and data buses, a 14-bit instruction word, and an 8-bit data path. The internal 32 MHz oscillator provides ±2% accuracy across temperature and voltage, and the nanoWatt XLP (eXtreme Low Power) feature provides sleep currents below 1 µA typical. The 16-bit PWM module operates independently from the CPU, allowing precise waveform generation without software overhead.
Typical uses include LED lighting controllers with 16-bit dimming resolution, IoT sensor nodes powered by coin cells or energy harvesters, battery chargers and power-conversion controllers that exploit the CWG and 16-bit PWM, brushed DC motor and fan speed control, and small home appliances with capacitive-touch interfaces. The wide operating voltage also makes it compatible with 2x AA / 2x AAA alkaline or single-cell Li-ion supplies.
When designing with this part, plan the I/O budget around the 18 available GPIO pins and remember that the PPS module allows remapping most digital peripherals. Add a 0.1 µF decoupling capacitor close to VDD and a bulk capacitor on the MCLR pull-up to ensure clean reset behavior across all operating temperatures.
This page synthesizes Microchip PIC16LF1579-I/SS distributor pricing, drop-in same-package alternatives from the PIC16F/LF family, and practical design notes that complement the manufacturer datasheet.
Alternativas directas para PIC16LF1579-I/SS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16LF1579-I/SS (mismo factor de forma y huella) — difiere en Package, ADC, Core Architecture, PWM Channels, Timers.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F1579-I/SS
✅ Sustitución directa✓ En stock
$1.13 / unidad
Ver hoja de datos →PIC16LF1579T-I/SS
✅ Sustitución directa✓ En stock
$0.81 / unidad
Ver hoja de datos →PIC16LF1579-E/SS
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.08 / unidad
Ver hoja de datos →PIC16LF1579-I/GZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.05 / unidad
Ver hoja de datos →PIC16LF1559-I/SS
✅ Sustitución directa✓ En stock
$1.59 / unidad
Ver hoja de datos →PIC16LF1578-I/SS
✅ Sustitución directa✓ En stock
$0.62 / unidad
Ver hoja de datos →PIC16LF1579-I/SS Valores máximos y características eléctricas
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 18 |
| ADC | 12-channel, 10-bit |
| DAC | 1-channel, 5-bit |
| PWM | 4 x 16-bit (independent timers) |
| Comparators | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| EUSART | 1 |
| Encapsulado | 20-SSOP (0.209") |
| Temperatura de funcionamiento | -40 °C to +85 °C (industrial) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC16LF1579-I/SS
| Pin 1 | RA5 — Bidirectional I/O with ADC and PPS |
| Pin 2 | RA4 — Bidirectional I/O with ADC |
| Pin 3 | RA3/MCLR — Master Clear (reset) input / I/O |
| Pin 4 | RA2 — Bidirectional I/O with ADC |
| Pin 5 | RA1 — Bidirectional I/O with ADC and DAC |
| Pin 6 | RA0 — Bidirectional I/O with ADC |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RB7 — Bidirectional I/O with PPS |
| Pin 9 | RB6 — Bidirectional I/O with PPS |
| Pin 10 | RB5 — Bidirectional I/O with ADC and PPS |
| Pin 11 | RB4 — Bidirectional I/O with ADC and PPS |
| Pin 12 | RB3 — Bidirectional I/O with ADC and PPS |
| Pin 13 | RB2 — Bidirectional I/O with ADC and PPS |
| Pin 14 | RB1 — Bidirectional I/O with ADC and PPS |
| Pin 15 | RB0 — Bidirectional I/O with ADC and PPS |
| Pin 16 | VDD — Positive supply (1.8 V to 3.6 V) |
| Pin 17 | RA7 — Bidirectional I/O with ADC |
| Pin 18 | RA6 — Bidirectional I/O with ADC |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply (1.8 V to 3.6 V) |
Aplicaciones típicas
PIC16LF1579-I/SS es adecuado para 6 aplicacións: LED Lighting Controllers with 16-bit PWM Dimming, Battery-Powered IoT Sensor Nodes, Digital Power Conversion (Buck/Boost PFC), Brushed DC Motor / Small Fan Speed Control, Home Appliance User Interface Boards, Portable Medical and Fitness Devices.
LED Lighting Controllers with 16-bit PWM Dimming
The PIC16LF1579-I/SS is purpose-built for high-resolution LED dimming because it integrates four 16-bit PWMs that deliver 65536-step resolution at 1 kHz update rates, well below the human-perceptible flicker threshold. The Complementary Waveform Generator produces non-overlapping gate drive signals for half-bridge or full-bridge LED driver stages with programmable dead-band, eliminating external timing ICs. With the 12-channel 10-bit ADC and 5-bit DAC, the MCU handles closed-loop current control across multiple LED strings in a single chip, while nanoWatt XLP sleep modes cut standby current below 1 µA in always-on lighting control.
Recomendado
Battery-Powered IoT Sensor Nodes
The PIC16LF1579-I/SS is ideal for coin-cell or 2x AA battery sensor nodes because it operates down to 1.8 V and provides nanoWatt XLP sleep currents below 1 µA typical. Its 14 KB Flash comfortably hosts BLE/Zigbee host stacks or LoRaWAN MAC layers, while the 12-channel 10-bit ADC reads thermistor, light, and battery-voltage sensors without external signal conditioning. The EUSART supports sensor-bus peripherals, and PPS remaps the UART to any GPIO, freeing scarce pins for sensor I/O. Per Microchip, a typical sensor-node duty cycle of 0.1% active can yield 5+ year lifetimes on a 240 mAh coin cell.
Recomendado
Digital Power Conversion (Buck/Boost PFC)
The PIC16LF1579-I/SS drives digital-controlled buck, boost, or PFC converters through its four 16-bit PWMs and CWG, enabling peak-current-mode loops with sub-microsecond resolution. The high-resolution PWM is essential for digital PFC at 100 kHz switching where 8-bit PWM would impose >1% duty-cycle quantization. The on-chip 12-channel 10-bit ADC samples inductor current, output voltage, and input voltage simultaneously, and the 5-bit DAC sets analog reference thresholds. The 1.8-3.6 V supply matches single-cell Li-ion operation in portable chargers.
Recomendado
Brushed DC Motor / Small Fan Speed Control
The PIC16LF1579-I/SS regulates brushed DC motors and small fans through closed-loop PWM control where the 16-bit PWM resolution enables smooth ramp-up, precise RPM holding, and audible-noise-free switching above 25 kHz. The CWG provides complementary drive signals for H-bridge motor drivers with programmable dead-band to prevent shoot-through. Back-EMF feedback through the 12-channel 10-bit ADC enables sensorless speed control without tachometer hardware. The MCU's 1.8-3.6 V range suits USB-powered or battery-powered appliance fans.
Recomendado
Home Appliance User Interface Boards
The PIC16LF1579-I/SS drives capacitive-touch keypads, LED status indicators, and segment displays in appliances like coffee machines, microwave ovens, and washing machines where its 18 GPIO handle up to 18 buttons or LEDs with the on-chip 10-bit ADC reading capacitive sensors directly. The EUSART links to the main appliance controller, and PPS remaps serial lines to any pin, simplifying PCB routing. The 32 MHz instruction rate ensures snappy UI response, and industrial temperature grade (-40 to +85 °C) handles kitchen-environment thermal stress.
Recomendado
Portable Medical and Fitness Devices
The PIC16LF1579-I/SS powers compact portable medical and fitness devices such as pulse oximeters, glucose meters, and activity bands because its 1.8-3.6 V range supports Li-ion coin-cell operation and its nanoWatt XLP modes extend battery life across multi-month deployments. The 12-channel 10-bit ADC reads multiple analog sensors (photodiode current, battery voltage, temperature compensation) without external multiplexers, and the 16-bit PWM dims indicator LEDs flicker-free. The on-chip 5-bit DAC calibrates LED brightness for accurate SpO2 measurement, and the industrial temperature grade covers skin-contact operating ranges.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF1579-I/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F1579-I/SS | PIC16LF1579T-I/SS | PIC16LF1579-E/SS | PIC16LF1559-I/SS | PIC16LF1578-I/SS |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB |
| Temperature Grade | -40 to +85 °C | -40 to +85 °C | -40 to +85 °C | -40 to +125 °C | -40 to +85 °C | -40 to +85 °C |
| Unit Price (qty 1) | $1.65 | $1.65 | $1.65 | $2.05 | $1.40 | $1.30 |
Diferenciadores clave
- Four 16-bit PWMs with CWG in same 20-SSOP (frente a PIC16LF1559-I/SS)
- Lower 1.8 V minimum supply voltage (frente a PIC16F1579-I/SS)
- On-chip 5-bit DAC for setpoint or calibration (frente a PIC16LF1578-I/SS)
Notas de diseño
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin (pin 16 and pin 20) and a 10 µF bulk tantalum or ceramic capacitor on the supply rail. For battery-powered designs, route MCLR (pin 13, shared with RA3) through a 10 kΩ pull-up to VDD to prevent spurious resets during brown-out; this is critical when VDD ramps below 1.8 V. Estimated: at 32 MHz active current is ~3 mA at 3.3 V, and sleep current with nanoWatt XLP is below 1 µA.
The 20-SSOP footprint has 0.65 mm pitch pads with 0.4 mm width; route all GPIO traces with 0.2 mm width and keep digital switching traces away from analog ADC inputs (RA0-RA5) by at least 3 trace widths to minimize coupling. For PPS-routed peripherals, group remapped pins in one PCB region to simplify firmware-driven routing changes. Keep the ICSPDAT/ICSPCLK traces (RB7/RB6 by default) short and stub-free to ensure stable in-circuit programming.
Do not operate the LF variant below 1.8 V or the Flash read will fail silently with corrupted execution. Always configure the Configuration Words (CONFIG1) for the correct oscillator mode - HS or INTOSC - and disable unused peripherals via the PMD (Peripheral Module Disable) registers to save current. When migrating from PIC16F1579, verify the BOR (brown-out reset) voltage threshold matches your supply tolerance; the default is 2.5 V which can cause unwanted resets on the LF variant when running from a nearly-discharged 2x AA pack.
Información de cumplimiento
RoHS and lead-free per Microchip product page. The -I/SS industrial grade is not AEC-Q100 qualified; for AEC-Q100 automotive use choose PIC16F1579-E/SS or PIC16LF1579T-I/VA-E/SS variants where available. REACH compliance per Microchip declaration.
