PIC16LF1777-I/P - 8-Bit XLP MCU 14KB Flash 40-PDIP | Microchip
MPN: PIC16LF1777-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC16LF1777-I/P Overview
The PIC16LF1777 belongs to the broader PIC16F177x family of 8-bit microcontrollers — a class of low-power CMOS MCUs built on Microchip's enhanced mid-range core. 8-bit PIC microcontrollers sit within the MCU taxonomy as: microcontroller -> 8-bit MCU -> PIC -> PIC16 family -> PIC16F177x sub-family. They occupy the low-power, deterministic, cost-optimized end of the MCU spectrum, ideal when simplicity, low sleep current, and rich on-chip analog outweigh raw computational throughput.
Key differentiators of this LF (low-power, F = Flash) variant include extended XLP™ sleep currents in the nanoampere range, a wide 1.8V–3.6V supply range, and an unusually rich set of on-chip analog building blocks. The 100 mA I/O sink/source capability, PPS routing, and integrated op-amps allow direct drive of LEDs and analog front-ends without external components, reducing BOM and PCB area. The device supports up to 32 MHz internal oscillator operation, eliminating the need for an external crystal in many designs.
Typical applications include LED lighting drivers (linear and constant-current), switched-mode power supplies with digital feedback loops, battery charging and fuel gauging front-ends, BLDC and brushed DC motor control with on-chip op-amp current sensing, and general-purpose industrial sensor signal conditioning. The combination of high-current I/O and integrated analog also suits e-metering and power-conversion auxiliary controllers.
When designing with this part, designers should leverage PPS to remap digital peripherals to alternate pins, freeing analog-capable pins from digital noise. Use the on-chip op-amps for current sensing in motor and power stages to minimize external parts. The 40-PDIP package is ideal for through-hole prototyping, educational use, and legacy designs that need a socketed MCU.
Drop-in alternatives for PIC16LF1777-I/P — 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 PIC16LF1777-I/P (same form factor and footprint) — differing in ADC, DAC, Operating Temperature, Package, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1779-I/P
✅ Drop-In✓ In Stock
$3.11 / Unit
View Datasheet →PIC16LF1778-I/P
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1777-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1717-I/PT
✅ Drop-In✓ In Stock
$2.3 / Unit
View Datasheet →PIC16F1769-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1777-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC16F enhanced mid-range 8-bit |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| RAM | 1 KB |
| CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage (Vdd) | 1.8 V to 3.6 V |
| ADC | 10-bit |
| DAC | 10-bit |
| On-chip Op-Amps | Yes |
| High-Speed Comparators | Yes |
| Zero-Cross Detect | Yes |
| Programmable Ramp Generator (PRG) | Yes |
| High-Current I/O | 100 mA |
| Peripheral Pin Select (PPS) | Yes |
| PWM Channels | 10/16-bit |
| Communication | SPI, I2C, EUSART |
| Package | 40-pin PDIP |
| Mounting Type | Through-Hole |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| RoHS Status | Compliant |
PIC16LF1777-I/P Pin Configuration
| Pin 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0 — Analog input / digital I/O |
| Pin 3 | RA1 — Analog input / digital I/O |
| Pin 4 | RA2 — Analog input / digital I/O |
| Pin 5 | RA3 — Analog input / digital I/O (input only) |
| Pin 6 | RA4 — Digital I/O |
| Pin 7 | RA5 — Analog input / digital I/O |
| Pin 8 | RA6 — Digital I/O |
| Pin 9 | RA7 — Digital I/O / oscillator |
| Pin 10 | RE0 — Digital I/O |
| Pin 11 | Vdd — Positive supply (1.8–3.6 V) |
| Pin 12 | Vss — Ground |
| Pin 13 | RB0 — Digital I/O / analog input |
| Pin 14 | RB1 — Digital I/O / analog input |
| Pin 15 | RB2 — Digital I/O / analog input |
| Pin 16 | RB3 — Digital I/O / analog input |
| Pin 17 | RB4 — Digital I/O |
| Pin 18 | RB5 — Digital I/O |
| Pin 19 | RB6 — Digital I/O / ICSPCLK |
| Pin 20 | RB7 — Digital I/O / ICSPDAT |
| Pin 21 | RC0 — Digital I/O / analog input |
| Pin 22 | RC1 — Digital I/O / analog input |
| Pin 23 | RC2 — Digital I/O / analog input |
| Pin 24 | RC3 — Digital I/O / analog input |
| Pin 25 | RC4 — Digital I/O |
| Pin 26 | RC5 — Digital I/O |
| Pin 27 | RC6 — Digital I/O / TX |
| Pin 28 | RC7 — Digital I/O / RX |
| Pin 29 | RD0 — Digital I/O / analog input |
| Pin 30 | RD1 — Digital I/O / analog input |
| Pin 31 | Vss — Ground |
| Pin 32 | Vdd — Positive supply (1.8–3.6 V) |
| Pin 33 | RD2 — Digital I/O / analog input |
| Pin 34 | RD3 — Digital I/O / analog input |
| Pin 35 | RD4 — Digital I/O / analog input |
| Pin 36 | RD5 — Digital I/O / analog input |
| Pin 37 | RD6 — Digital I/O / analog input |
| Pin 38 | RD7 — Digital I/O / analog input |
| Pin 39 | RE1 — Digital I/O |
| Pin 40 | RE2 — Digital I/O |
Typical Applications
PIC16LF1777-I/P is suitable for 7 applications: LED Lighting Drivers, Switched-Mode Power Supplies (SMPS), Battery Charging & Management, BLDC and Brushed DC Motor Control, Industrial Sensor Signal Conditioning, General-Purpose Embedded Control, Smart Home and IoT Sensor Nodes.
LED Lighting Drivers
The PIC16LF1777-I/P is ideal for LED lighting drivers thanks to its 100 mA high-current I/O capable of directly sinking LEDs without external MOSFETs, and its 10-bit DAC for smooth dimming curves. The 10/16-bit PWM peripherals support high-resolution color mixing for RGBW fixtures. Internal op-amps enable current-sense feedback for constant-current regulation. With XLP™ sleep currents in the nanoampere range, battery-powered or energy-harvesting lighting designs can extend operational life. The 14 KB Flash is sufficient for lighting-control state machines, DALI or DMX protocols, and thermal-management algorithms. Peripheral pin select (PPS) lets designers route PWM outputs to physically convenient pins, simplifying PCB layout in space-constrained fixtures.
Recommended
Switched-Mode Power Supplies (SMPS)
In SMPS designs, PIC16LF1777-I/P serves as a digital supervisory controller or as the main controller in low-power converters. The high-speed comparators and programmable ramp generator (PRG) implement peak-current-mode control without external ramp circuitry. On-chip op-amps condition current-sense signals directly. The 10-bit ADC samples output voltage and current for closed-loop regulation. PIC's deterministic interrupt latency ensures predictable PWM timing. The wide 1.8–3.6 V supply allows operation from auxiliary rails or bias supplies. With 14 KB Flash, designers can implement proprietary control algorithms, soft-start profiles, and fault handling for isolated or non-isolated topologies including flyback, buck, and boost.
Recommended
Battery Charging & Management
The PIC16LF1777-I/P suits battery-charging applications including single-cell Li-ion, NiMH, and lead-acid chargers. The 10-bit ADC accurately measures battery voltage and charge current, while on-chip op-amps amplify current-sense shunt voltages. The 10-bit DAC programs precise charge-voltage setpoints. XLP™ technology minimizes quiescent current when the charger is idle, preserving battery life. PPS allows flexible assignment of ADC channels to different battery-monitoring points. The 32 MHz CPU executes CC-CV charging profiles, temperature compensation, and safety timers. Designers can implement fuel-gauging algorithms and protection features (overvoltage, undervoltage, overtemperature) all on-chip without external supervision ICs.
Recommended
BLDC and Brushed DC Motor Control
The PIC16LF1777-I/P provides comprehensive motor-control peripherals: 10/16-bit PWMs drive MOSFET half-bridges, on-chip op-amps condition phase currents, and high-speed comparators trigger hardware overcurrent protection. Zero-cross detect (ZCD) enables sensorless BLDC back-EMF zero-crossing detection. The 100 mA I/O can drive small MOSFETs directly. Microchip's application notes document complete BLDC firmware for this MCU including commutation tables, PI control loops, and fault recovery. The 14 KB Flash holds sensorless FOC or trapezoidal algorithms for small motors in fans, pumps, and appliances. PIC's deterministic instruction timing is valuable for real-time motor control where consistent PWM update rates matter.
Recommended
Industrial Sensor Signal Conditioning
The PIC16LF1777-I/P integrates the analog chain needed for sensor signal conditioning. On-chip op-amps amplify low-level transducer signals (thermocouples, strain gauges, pressure sensors) directly. The 10-bit ADC digitizes conditioned signals, while the 10-bit DAC generates excitation voltages for ratiometric sensors. The high-speed comparator provides threshold detection for alarm outputs. Industrial temperature range (-40 to +85 °C) and XLP™ low-power modes suit remote or battery-powered sensor nodes. SPI/I2C/EUSART interfaces connect to host MCUs, displays, or industrial buses. Designers can implement linearization, calibration tables, and digital filtering entirely in firmware using the 14 KB Flash.
Recommended
General-Purpose Embedded Control
Beyond specialized applications, PIC16LF1777-I/P serves as a versatile general-purpose MCU for hobbyist, educational, and legacy embedded designs. The 40-PDIP through-hole package is breadboard-friendly, ideal for prototyping and university courses teaching embedded programming. PIC's mature MPLAB X IDE, XC8 compiler, and vast library ecosystem lower the learning curve. The rich peripheral set (SPI, I2C, EUSART, ADC, DAC, op-amps, comparators, PWMs) covers most introductory embedded projects. 14 KB Flash accommodates mid-sized applications like data loggers, simple HMI controllers, and home automation nodes. The part's longevity program ensures multi-year availability for industrial and consumer products.
Recommended
Smart Home and IoT Sensor Nodes
PIC16LF1777-I/P fits battery-powered smart-home sensor nodes thanks to its XLP™ nanoamp sleep currents and integrated analog chain. The 10-bit ADC reads temperature, humidity, or motion sensors; op-amps condition analog front-ends; the EUSART interfaces with sub-GHz or BLE modules via SPI/I2C. The 14 KB Flash holds application logic and wireless protocol stacks for simple sensor applications. PPS allows flexible pin assignment to accommodate small PCB layouts. Designers can wake the MCU on interrupt, take a measurement, transmit, and return to deep sleep — all on a single CR2032 battery for years. The 1.8–3.6 V supply range matches common coin-cell and 2xAA battery packs directly.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1777-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1779-I/P | PIC16LF1778-I/P | PIC16F1777-I/P | PIC16F1717-I/P | PIC16F1769-I/P |
|---|---|---|---|---|---|---|
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 28 KB | 14 KB | 14 KB | 14 KB | 8 KB |
| RAM | 1 KB | 2 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Voltage | 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 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| On-chip Op-Amps | Yes (multiple) | Yes | Yes | Yes | Yes (2) | Yes (2) |
| Programmable Ramp Generator | Yes | Yes | Yes | Yes | No | No |
| High-Current I/O (100 mA) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Higher memory density within same 40-PDIP footprint (vs PIC16LF1778-I/P)
- Integrated programmable ramp generator for SMPS control (vs PIC16F1717-I/P)
- Lower voltage operation for battery-powered designs (vs PIC16F1777-I/P)
Design Notes
The PIC16LF1777-I/P operates from 1.8 V to 3.6 V on Vdd. Decouple Vdd (pins 11 and 32) with a 100 nF ceramic capacitor placed within 5 mm of each pin, plus a bulk 10 µF tantalum or ceramic capacitor. Tie both Vss pins (12 and 31) to a low-impedance ground plane. For battery-powered designs, leverage the XLP™ nanoamp sleep modes (Sleep, DOZE, IDLE) — verify wake-up sources in firmware to minimize average current. Estimated: typical active current ~3 mA at 32 MHz/3.3 V; deep sleep <100 nA.
Use peripheral pin select (PPS) to remap digital peripherals (SPI, I2C, PWM, EUSART) to alternate physical pins, freeing analog-capable pins from digital switching noise. Keep analog signal traces short and guarded by ground pours. Place the ICSP™ programming connector footprint (MCLR, ICSPCLK, ICSPDAT) on the PCB to allow in-circuit programming. Add a 10 kΩ pull-up on MCLR and a 100 nF cap on Vpp for clean reset behavior.
Avoid confusing PIC16LF1777 with PIC16F1777: the LF variant is 1.8–3.6 V only, while F is 1.8–5.5 V. Applying 5 V to LF parts causes permanent damage. The 100 mA high-current I/O pins have special absolute maximum ratings — do not exceed them even momentarily. Configuration words must be set correctly to enable the internal oscillator and disable unused peripherals for lowest power. Use the ICD (In-Circuit Debugger) header for firmware development to avoid repeated device erasing.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40 °C to +85 °C. Not AEC-Q100 qualified; for automotive designs, consult Microchip's automotive-grade PIC16F1xxx variants.
