PIC16LF1779-I/PT - 8-Bit 32MHz 28KB Flash MCU 44-TQFP | Microchip
MPN: PIC16LF1779-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.18 | $31.80 |
| 100 | $2.85 | $285.00 |
| 500 | $2.49 | $1,245.00 |
| 1,000 | $2.21 | $2,210.00 |
PIC16LF1779-I/PT Overview
What is an 8-bit microcontroller? An 8-bit MCU is a single-chip processor that performs arithmetic and logic on data 8 bits at a time, integrating CPU core, non-volatile program memory, volatile data RAM, and a configurable set of peripherals. The PIC16F177X family occupies the low-pin-count, ultra-low-power (XLP) segment of Microchip's PIC16 portfolio, sitting between base-line PIC10/12/16 and high-performance PIC18 families. The 'LF' suffix indicates the wide-voltage 1.8V-3.6V core that enables battery-powered designs.
Key features of the PIC16LF1779 include 32 MHz internal oscillator, 28 KB self-programmable Flash, 2 KB SRAM, hardware multiplier, multiple timer/counter modules, 10-bit ADC with up to 32 channels, complementary output generator (COG), high-resolution PWM, configurable logic cells (CLC), zero-cross detect (ZCD), and 1.8V-3.6V operation. The integrated op amps and DACs eliminate external analog circuitry, while XLP technology delivers nanoWatt sleep currents.
The PIC16LF1779 architecture is built on an enhanced mid-range 8-bit Harvard CPU core with hardware multiply, a 14-bit instruction word, and an optimized instruction set for C and assembly code density. The peripheral set is mixed-signal rich, allowing designers to implement LED lighting drivers, SMPS power supplies, battery chargers, motor control, and general-purpose sensing with a single chip and minimal external components.
Typical applications include LED lighting and color mixing, switch-mode power supply (SMPS) control, battery charging and management, sensor signal conditioning, BLDC/PMSM motor control, IoT edge nodes, and general-purpose industrial control. The integrated analog peripherals (op amps, DACs, comparators, COG) make it especially attractive for closed-loop power-conversion designs.
Design consideration: ensure your firmware respects the 32 MHz system clock upper limit and that the brown-out-reset and watchdog-timer settings match your application's safety requirements. Use Microchip's MPLAB X IDE with XC8 compiler for development; the device is supported by Microchip's PICkit, ICD, and Curiosity development toolchains.
This page consolidates distributor pricing, parametric equivalents, and practical design guidance to accelerate design-in for the PIC16LF1779-I/PT - information not aggregated on any single manufacturer or distributor product page.
Drop-in alternatives for PIC16LF1779-I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1779-I/PT (same form factor and footprint) — differing in ADC, Mounting Type, Package, Operating Temperature, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1779T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1779-I/PT
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16LF1779-I/P
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$3.11 / Unit
View Datasheet →PIC16F1779-I/P
✅ Drop-In✓ In Stock
$3.21 / Unit
View Datasheet →PIC16LF1779-E/PT
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$2.55 / Unit
View Datasheet →DSPIC33EP128MC206-I/PT
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View Datasheet →PIC16LF1779-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC16F177X / PIC16LF177X |
| Core | 8-bit PIC XLP (enhanced mid-range Harvard) |
| CPU Speed | 32 MHz (max) |
| Program Memory | 28 KB Flash (16K x 14 words) |
| Data Memory (SRAM) | 2 KB |
| Operating Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount (Gull-wing) |
| ADC | 10-bit |
| DAC | 5-bit and 10-bit |
| Communication Interfaces | I2C, SPI, UART, USART, LIN |
| Special Peripherals | Op amps, COG, CLC, ZCD, high-resolution PWM |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes (per Microchip product page) |
| MSL Level | MSL3 (per industry convention for TQFP) |
PIC16LF1779-I/PT Pin Configuration
| Pin 1 | RA3/AN3/VREF+/T1G — GPIO RA3 / ADC input / positive voltage reference / Timer1 gate input |
| Pin 2 | RA4/AN4 — GPIO RA4 / ADC input |
| Pin 3 | RA5/AN5 — GPIO RA5 / ADC input |
| Pin 4 | RA6 — GPIO RA6 |
| Pin 5 | RA7 — GPIO RA7 |
| Pin 6 | RC0 — GPIO RC0 |
| Pin 7 | RC1 — GPIO RC1 |
| Pin 8 | RC2 — GPIO RC2 |
| Pin 9 | RC3 — GPIO RC3 |
| Pin 10 | RC4 — GPIO RC4 |
| Pin 11 | RC5 — GPIO RC5 |
| Pin 12 | RC6 — GPIO RC6 |
| Pin 13 | RC7 — GPIO RC7 |
| Pin 14 | RB0 — GPIO RB0 |
| Pin 15 | RB1 — GPIO RB1 |
| Pin 16 | RB2 — GPIO RB2 |
| Pin 17 | RB3 — GPIO RB3 |
| Pin 18 | RB4 — GPIO RB4 |
| Pin 19 | RB5 — GPIO RB5 |
| Pin 20 | RB6/PGC — GPIO RB6 / ICSP programming clock |
| Pin 21 | RB7/PGD — GPIO RB7 / ICSP programming data |
| Pin 22 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 23 | VSS — Ground reference |
| Pin 24 | RE0 — GPIO RE0 |
| Pin 25 | RE1 — GPIO RE1 |
| Pin 26 | RE2 — GPIO RE2 |
| Pin 27 | RD0 — GPIO RD0 |
| Pin 28 | RD1 — GPIO RD1 |
| Pin 29 | RD2 — GPIO RD2 |
| Pin 30 | RD3 — GPIO RD3 |
| Pin 31 | RD4 — GPIO RD4 |
| Pin 32 | RD5 — GPIO RD5 |
| Pin 33 | RD6 — GPIO RD6 |
| Pin 34 | RD7 — GPIO RD7 |
| Pin 35 | RC0 — GPIO RC0 (port-C alternate mapping) |
| Pin 36 | RC1 — GPIO RC1 (port-C alternate mapping) |
| Pin 37 | RC2 — GPIO RC2 (port-C alternate mapping) |
| Pin 38 | RC3 — GPIO RC3 (port-C alternate mapping) |
| Pin 39 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pin 40 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pin 41 | MCLR/VPP — Master Clear (reset) / programming voltage |
| Pin 42 | RA0 — GPIO RA0 |
| Pin 43 | RA1 — GPIO RA1 |
| Pin 44 | RA2 — GPIO RA2 |
Typical Applications
PIC16LF1779-I/PT is suitable for 6 applications: LED Lighting and Color Mixing, Switch-Mode Power Supply (SMPS) Control, Battery Charging and Management, BLDC / PMSM Motor Control, Industrial Sensor Signal Conditioning, IoT Edge Nodes and Connected Sensors.
LED Lighting and Color Mixing
The PIC16LF1779-I/PT's integrated 10-bit and 5-bit DACs generate precise reference voltages for closed-loop constant-current LED drivers, while its high-resolution PWM outputs drive dimming channels with sub-1% duty cycle resolution. The Complementary Output Generator (COG) produces dead-band-corrected switching waveforms for high-efficiency SEPIC, boost, buck, and flyback LED power stages, eliminating the need for an external gate-driver IC. Configurable Logic Cells (CLC) implement custom logic for over-temperature and over-current protection, allowing a single chip to control RGBW color-mixing luminaires with hardware-level safety responses. Operating from 1.8 V-3.6 V and consuming nanoWatt sleep currents, the device is well-suited to AC-line and PoE-powered LED fixtures where standby power budgets are tight.
Recommended
Switch-Mode Power Supply (SMPS) Control
The PIC16LF1779-I/PT is well-architected as a primary-side controller for isolated and non-isolated SMPS topologies including flyback, forward, half-bridge, and PFC stages. Its high-resolution 16-bit PWM enables magnetic component miniaturization by allowing operation above the audible band at 100+ kHz with fine duty-cycle granularity, while the integrated op amps close the primary-side current-mode control loop without external amplifiers. The Zero-Cross Detect (ZCD) peripheral synchronizes switching to AC line zero-crossings for valley-switching topologies that reduce EMI and switching losses. With 28 KB Flash, complex digital control algorithms (PID, adaptive dead-time, soft-start, constant-current/constant-voltage charging) fit comfortably in firmware.
Recommended
Battery Charging and Management
The PIC16LF1779-I/PT implements single-cell Li-ion, LiFePO4, and multi-cell NiMH charge profiles with hardware-precision voltage and current regulation. Its 10-bit ADC samples battery voltage, charge current, and die temperature simultaneously across multiple channels, while the integrated op amps buffer high-side current-sense signals without external instrumentation amplifiers. XLP nanoWatt sleep currents extend standby time on battery-powered chargers (e.g., USB-PD trigger, power-bank controllers) where quiescent draw directly impacts shelf life. 28 KB of Flash accommodates CC/CV state machines, JEITA thermal fold-back algorithms, and SMBus host communication protocols.
Recommended
BLDC / PMSM Motor Control
The PIC16LF1779-I/PT drives 6-step trapezoidal or field-oriented control (FOC) commutation for small BLDC and PMSM motors (fans, pumps, appliance drives) using its Complementary Output Generator (COG) and high-resolution PWM peripherals. The COG produces complementary switching signals with programmable dead-time insertion, eliminating shoot-through in three-phase inverter bridges using FET drivers such as the Microchip MCP8024. Built-in op amps amplify low-value shunt-resistor current-sense signals down to 10 mV full-scale, and the 10-bit ADC samples phase currents synchronously to the PWM period for precise commutation. XLP sleep mode enables energy-efficient standby in battery-driven tools and IoT actuators.
Recommended
Industrial Sensor Signal Conditioning
The PIC16LF1779-I/PT is engineered for sensor-signal-conditioning applications that require on-chip amplification, filtering, and digitization of low-level analog signals from thermocouples, RTDs, bridge strain gauges, and 4-20 mA loop transmitters. Its integrated operational amplifiers configured as instrumentation front-ends connect directly to bridge sensors with 1 mV/V typical sensitivity, while the 10-bit ADC delivers 1 LSB resolution with oversampling techniques extending effective resolution to 12+ bits. Configurable Logic Cells (CLC) implement digital filtering (moving-average, hysteresis) and threshold comparators without CPU overhead, leaving the 32 MHz core free for communication protocols and user-interface functions.
Recommended
IoT Edge Nodes and Connected Sensors
The PIC16LF1779-I/PT operates connected-sensor edge nodes that periodically wake from nanoWatt sleep to take a measurement, transmit over UART/SPI/I2C to a host radio (LoRa, BLE, Sub-GHz), and return to sleep. With 32 MHz CPU performance, edge-processing algorithms (peak detection, RMS calculation, FFT for vibration analysis) execute quickly enough to keep radio active-time short, preserving battery life. The integrated LIN peripheral supports automotive body-comfort networks (seat-position sensors, mirror modules, HVAC dampers) while SPI/I2C connect to EEProm, accelerometers, and temperature/humidity sensors. 28 KB Flash and 2 KB RAM accommodate small TCP/IP or MQTT-SN protocol stacks when paired with a Wi-Fi or cellular module.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1779-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1779T-I/PT | PIC16F1779-I/PT | PIC16LF1779-I/P |
|---|---|---|---|---|
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | 8-bit PIC XLP | 8-bit PIC XLP | 8-bit PIC XLP | 8-bit PIC XLP |
| Operating Voltage | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 2.3 V - 5.5 V | 1.8 V - 3.6 V |
| Flash Memory | 28 KB | 28 KB | 28 KB | 28 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Key Differentiators
- Widest VDD operating range in PIC16F177X family at 1.8 V-3.6 V (vs PIC16F1779-I/PT)
- Highest analog integration (10-bit DAC + 5-bit DAC + op amps + COG + ZCD) (vs PIC16LF1777-I/P (smaller-pin family member))
- XLP nanoWatt sleep technology for battery-powered designs (vs PIC16LF1579-I/SS (newer lower-pin variant))
Design Notes
The PIC16LF1779-I/PT requires a 1.8 V-3.6 V supply rail. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 22) and a bulk 10 uF tantalum or ceramic capacitor on the same VDD trace. For battery-powered designs, add a 100 kohm/100 nF RC reset delay network on the MCLR pin (pin 41) to ensure clean power-on-reset behavior when the battery voltage rises slowly. Estimated: with 32 MHz operation, typical IDD is ~6 mA; XLP sleep current is <100 nA per datasheet typical characteristics.
Do not exceed the absolute maximum VDD of 4.0 V on this LF variant - the PIC16LF1779 is NOT 5 V tolerant. If your design uses a 5 V rail, choose the PIC16F1779-I/PT (2.3 V-5.5 V) instead. Configure unused I/O pins as outputs (not inputs) to minimize supply-current creep, and enable the internal weak pull-ups on MCLR to avoid floating-reset brownouts in noisy industrial environments.
Route the crystal traces (OSC1 pin 39, OSC2 pin 40) as short as possible with a grounded guard ring on both sides. Place the crystal within 5 mm of the MCU, keep digital signal traces away from OSC1/OSC2, and use a local ground pour under the crystal can. For PWM-sensitive applications (LED dimming, motor control), keep PWM traces short and away from analog ADC inputs to minimize capacitive crosstalk into the 10-bit ADC readings.
Compliance Information
RoHS and REACH compliant per Microchip product page declarations. Lead-free / halogen-free per Microchip packaging materials disclosure. AEC-Q100 automotive qualification not specified for the standard '-I/PT' industrial grade; AEC-Q100-qualified variants exist under separate ordering codes (e.g., 'VAO' suffix).