PIC16LF1776T-I/SS - 8-Bit 32MHz MCU, 14KB Flash, 10-bit DAC | Microchip
MPN: PIC16LF1776T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.84 | $2.84 |
| 10 | $2.55 | $25.50 |
| 100 | $2.27 | $227.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.81 | $1,810.00 |
PIC16LF1776T-I/SS Overview
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip integrating a CPU, program memory (Flash), data memory (RAM), and on-chip peripherals such as timers, ADCs, communication ports, and analog blocks. Within the broader hierarchy of embedded computing, MCUs sit below microprocessors (MPUs) and below general-purpose CPUs, optimized for deterministic real-time control of sensors, actuators, and human-machine interfaces in compact, cost-sensitive products.
The PIC16LF1776 family is distinguished by intelligent analog integration - 10-bit DACs, high-resolution PWM, op-amps, comparators, and ADC channels - combined with Core Independent Peripherals (CIPs) that let hardware blocks operate without CPU intervention. This offloads real-time tasks, enabling lower system power and faster response for LED lighting, digital power conversion, motor control, and battery charging applications.
Architecturally the device uses a 14-bit instruction word with an 8-bit data path, providing predictable single-cycle execution on most instructions and a compact code footprint. The Flash-based program memory supports in-circuit self-programming, allowing field firmware updates. Integrated peripherals include multiple 10-bit DACs (10B), 10-bit ADC, comparators, configurable logic cells (CLC), and zero-cross detectors ideal for TRIAC dimming and power-factor correction.
Typical applications for the PIC16LF1776T-I/SS span LED drivers, switch-mode power supplies, battery chargers, ceiling-fan and small BLDC motor control, IoT sensor nodes, and general-purpose embedded controllers where low cost, low power, and rich analog integration outweigh the need for a 32-bit core. For designs requiring extended precision DSP or higher throughput, Microchip's dsPIC33 family offers upward migration within the same MPLAB X toolchain.
When selecting, confirm headroom for peripheral activity - simultaneous DAC/ADC/PWM operations can approach current limits; consult the datasheet's DC characteristics section. The device is pin-compatible across PIC16LF177x variants, allowing straightforward code re-targeting as memory or peripheral needs evolve.
This page synthesizes distributor pricing, parametric drop-in alternatives from the Microchip PIC16LF177x family, and practical design notes that complement the official Microchip datasheet.
Drop-in alternatives for PIC16LF1776T-I/SS — 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 PIC16LF1776T-I/SS (same form factor and footprint) — differing in I/O Pins, Operating Temperature, Package, ADC, Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1776-I/SS
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16LF1777-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1778-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1779-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1769-I/SS
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16LF1768-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF1776T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 enhanced mid-range |
| Instruction Word Size | 14-bit |
| CPU Clock Speed (max) | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| I/O Pins | Up to 25 (varies by package) |
| DAC | 10-bit, multiple instances (10B per LCSC datasheet) |
| Package | 28-SSOP (5.30 mm body width) |
| Operating Temperature | -40C to +85C (industrial, I grade) |
| Mounting Type | Surface Mount |
| Packaging Option | Tape & Reel ("/T" suffix) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1776T-I/SS Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / analog input |
| Pin 2 | RA4 — I/O port A bit 4 |
| Pin 3 | RA3 — I/O port A bit 3 / MCLR (input only) |
| Pin 4 | RA2 — I/O port A bit 2 / analog input |
| Pin 5 | RA1 — I/O port A bit 1 / analog input |
| Pin 6 | RA0 — I/O port A bit 0 / analog input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RB7 — I/O port B bit 7 / ICSPDAT |
| Pin 9 | RB6 — I/O port B bit 6 / ICSPCLK |
| Pin 10 | RB5 — I/O port B bit 5 |
| Pin 11 | RB4 — I/O port B bit 4 / analog input |
| Pin 12 | RB3 — I/O port B bit 3 |
| Pin 13 | RB2 — I/O port B bit 2 / analog input |
| Pin 14 | RB1 — I/O port B bit 1 / analog input |
| Pin 15 | RB0 — I/O port B bit 0 / INT |
| Pin 16 | VDD — Positive supply (1.8V-3.6V) |
| Pin 17 | RC7 — I/O port C bit 7 / RX/DT |
| Pin 18 | RC6 — I/O port C bit 6 / TX/CK |
| Pin 19 | RC5 — I/O port C bit 5 |
| Pin 20 | RC4 — I/O port C bit 4 |
| Pin 21 | RC3 — I/O port C bit 3 / analog input |
| Pin 22 | RC2 — I/O port C bit 2 / analog input |
| Pin 23 | RC1 — I/O port C bit 1 / analog input |
| Pin 24 | RC0 — I/O port C bit 0 / analog input |
| Pin 25 | RA7 — I/O port A bit 7 / oscillator |
| Pin 26 | RA6 — I/O port A bit 6 / oscillator |
| Pin 27 | VSS — Ground reference (second pad) |
| Pin 28 | VDD — Positive supply (second pad) |
Typical Applications
PIC16LF1776T-I/SS is suitable for 7 applications: LED Lighting Drivers, Switch-Mode Power Supplies (SMPS), Battery Charging Controllers, Ceiling Fan and BLDC Motor Control, IoT Sensor Nodes, General-Purpose Embedded Controllers, TRIAC Dimming and AC Line Sensing.
LED Lighting Drivers
The PIC16LF1776T-I/SS is well-suited for multi-channel LED lighting drivers because it integrates multiple 10-bit DACs (10B), high-resolution PWM modules, and zero-cross detect (ZCD) peripherals for TRIAC dimming compatibility. The 14 KB Flash and 1 KB RAM comfortably host color-mixing or tunable-white firmware, while the 32 MHz CPU enables smooth logarithmic dimming curves. Compared with discrete MCU + external DAC solutions, the on-chip DAC reduces BOM cost and PCB area in constant-current LED bulbs, downlights, and architectural fixtures.
Recommended
Switch-Mode Power Supplies (SMPS)
For digital SMPS designs, the PIC16LF1776T-I/SS brings together on-chip comparators, op-amps, configurable logic cells (CLC), and high-resolution PWM - a complete analog/digital control loop in one IC. At 32 MHz the device executes voltage-mode and peak-current-mode control loops with adequate resolution, while the 1.8V-3.6V LF range suits auxiliary supply rails. Engineers typically use this part for non-isolated buck/boost converters and PFC front-ends below 200W.
Recommended
Battery Charging Controllers
The PIC16LF1776T-I/SS is a strong fit for Li-ion / lead-acid battery chargers that need closed-loop CC/CV control, temperature monitoring, and status display. The on-chip 10-bit ADC and 10-bit DACs handle voltage and current sensing plus reference generation, while the integrated op-amps condition sensor signals without external components. The nanoWatt XLP low-power modes extend standby life in idle chargers, and 1 KB RAM is sufficient for state-machine charge algorithms.
Recommended
Ceiling Fan and BLDC Motor Control
Low-power BLDC and ceiling-fan controllers leverage the PIC16LF1776T-I/SS's PWM, comparator, and zero-cross detect peripherals for back-EMF sensing and trapezoidal commutation. At 32 MHz the MCU generates six-step or sinusoidal commutation timing with fine speed resolution, while on-chip op-amps amplify shunt current signals directly. The 28-SSOP package handles modest thermal dissipation in fan-hub PCBs, and the industrial -40C to +85C range tolerates motor ambient heat.
Recommended
IoT Sensor Nodes
Battery-powered IoT sensor nodes benefit from the PIC16LF1776T-I/SS's nanoWatt XLP sleep currents and on-chip 10-bit ADC for direct sensor interfacing. The 1.8V-3.6V supply matches single-cell Li-ion / 2x AA chemistries, while 1 KB RAM and 14 KB Flash support small protocol stacks (Modbus, custom RF, BLE via external module). The 32 MHz wake-from-sleep time enables responsive event-driven sensing without complex RTOS overhead.
Recommended
General-Purpose Embedded Controllers
Beyond specialty applications, the PIC16LF1776T-I/SS serves as a versatile general-purpose embedded controller in appliances, HVAC controls, access systems, and small user-interface modules. Its 25+ I/O pins, multiple timers, PWM, and on-chip analog blocks let designers consolidate glue logic and the main MCU into a single IC. The MPLAB X IDE ecosystem, free XC8 compiler, and Microchip application library shorten firmware development for cost-sensitive consumer products.
Recommended
TRIAC Dimming and AC Line Sensing
The PIC16LF1776T-I/SS's zero-cross detect (ZCD) peripheral directly senses AC mains zero crossings, enabling phase-angle TRIAC dimming with predictable synchronization and reduced inrush stress. Combined with 10-bit DAC-driven reference generation and on-chip comparators, the MCU implements closed-loop dimming for retrofit LED lamps without external ZCD optocouplers. The 28-SSOP package fits comfortably inside compact lamp form factors.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1776T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1776-I/SS | PIC16LF1777-I/SS | PIC16LF1778-I/SS | PIC16LF1779-I/SS | PIC16LF1769-I/SS | PIC16LF1768-I/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) |
| CPU Clock (max) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V | 1.8 V - 3.6 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging Format | Tape & Reel | Tube | Tube | Tube | Tube | Tube | Tube |
Key Differentiators
- Largest memory in the 28-SSOP PIC16LF177x family with integrated 10-bit DACs (vs PIC16LF1769-I/SS)
- Industrial temperature grade with tape-and-reel packaging for high-volume assembly (vs PIC16LF1776-I/SS)
- On-chip analog integration (DACs, comparators, op-amps, CLCs) reduces external component count (vs DSPIC33EP128MC502-I/SS)
Design Notes
The PIC16LF1776T-I/SS LF variant operates from 1.8 V to 3.6 V. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 16 and 28 on the 28-SSOP) plus a bulk 10 uF tantalum or ceramic cap on the same rail. Both VSS pins (7 and 27) must be tied to a low-impedance ground plane. Inadequate decoupling is the most common cause of MCU instability, especially when driving PWM outputs that switch high currents on nearby ground traces.
Do not program the configuration bits with the wrong oscillator setting - the LF variant's internal 32 MHz HFINTOSC depends on correct PLL configuration, and a missing PLL enable leaves the CPU at 8 MHz, reducing throughput by 75%. Always use the latest MPLAB X IDE and XC8 compiler version that matches the device family header. Also, MCLR (pin 3, RA3) is input-only and must never be driven as an output - tie it to VDD through a 10 kohm resistor for normal operation, or to ICD for in-circuit debugging.
Route analog signals (ADC inputs, DAC outputs, comparator inputs) away from digital PWM switching traces to minimize coupled noise. Keep analog and digital ground returns separated at the source and joined at a single star point near the MCU's VSS pins. The on-chip 10-bit DACs driving reference nodes should be buffered externally if their load impedance falls below 5 kohm, otherwise output accuracy degrades. Place the ICSP programming header (RB6/RB7) on accessible board edges for field updates.
When using the PIC16LF1776T-I/SS for TRIAC dimming with the zero-cross detect (ZCD) peripheral, route the ZCD input trace near the MCU and away from mains switching nodes. Add an RC snubber at the ZCD pin (typically 1 kohm + 100 pF) to debounce contactor noise. Verify the ZCD interrupt latency in your firmware - missed zero crossings cause visible flicker. For sensorless BLDC motor control using back-EMF comparators, allocate one full PWM period for the ADC acquisition window to avoid comparator race conditions.
Compliance Information
RoHS and lead-free compliance per Microchip product page (PIC16F1776 family). The "/SS" 28-SSOP package is industrial-grade (-40C to +85C), not AEC-Q100 automotive qualified - select PIC16F1776-E/SS or PIC16F1776T-I/SS automotive variants for AEC-Q100 needs. REACH compliance assumed but [DATA_NEEDED] for explicit Microchip statement.
