PIC16F1776T-I/SO - 8-Bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16F1776T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.27 | $227.00 |
| 500 | $1.99 | $995.00 |
| 1,000 | $1.71 | $1,710.00 |
PIC16F1776T-I/SO Overview
A PIC microcontroller (Programmable Interface Controller) is a Harvard-architecture RISC processor widely used in embedded designs for lighting, power conversion, motor control, and general-purpose I/O. The PIC16F1776 sits within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The 'XLP' designation indicates ultra-low-power operation, with sleep currents often below 100 nA, making this part suited to battery-powered applications.
Key features of the PIC16F1776 include a 32MHz maximum CPU clock, 14KB Flash, up to 1024 bytes RAM, integrated op-amps, 10-bit ADC with computation, multiple 16-bit PWMs, complementary waveform generators, and a wide operating voltage range. The device provides configurable logic cells, slope compensation for power supply designs, and high-current I/O capable of directly driving LEDs and FETs.
The architecture combines a 49-instruction RISC core with peripheral pin select (PPS) for flexible pin mapping, allowing engineers to remap digital peripherals to multiple I/O pins. With its high level of analog/digital integration, the PIC16F1776 consolidates what would otherwise require several external components in lighting, battery charger, and motor drive designs.
Typical applications include LED lighting control, switched-mode power supply (SMPS) controllers, battery charging systems, DC-DC converters, motor control, and general-purpose embedded control. The 28-SOIC package is a widely supported surface-mount format suitable for hand-soldering and reflow assembly.
When designing, note that the 'T' suffix indicates tape-and-reel packaging for high-volume assembly, and the 'I' denotes the industrial temperature grade of -40C to +85C. PPS configuration must be locked in firmware before any peripheral pin change takes hold.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16F177x family, and practical design notes for SMPS and LED control applications not all collated on the manufacturer datasheet.
Drop-in alternatives for PIC16F1776T-I/SO — 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 PIC16F1776T-I/SO (same form factor and footprint) — differing in ADC, Core Architecture, Package, Data EEPROM, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1776-I/SO
✅ Drop-In✓ In Stock
$1.81 / Unit
View Datasheet →PIC16F1776-I/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.78 / Unit
View Datasheet →PIC16F1773-I/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16F1769-I/SO
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F1768-I/ML
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1709-I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.38 / Unit
View Datasheet →PIC16F1776T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (enhanced mid-range) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (RAM) | 1 KB (1024 bytes) |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Package | 28-SOIC (0.295", 7.50mm width) |
| ADC | 10-bit, multi-channel |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Packaging | Tape & Reel (T) |
| Family | PIC16F177x XLP |
PIC16F1776T-I/SO Pin Configuration
| Pin 1 | RA1/AN1/OPA1IN0+ — Analog input / op-amp input / GPIO |
| Pin 2 | RA2/AN2/OPA1OUT — Analog / op-amp output / GPIO |
| Pin 3 | RA3/AN3/OPA1IN1- — Analog / op-amp inverting input / GPIO |
| Pin 4 | RA4/AN4/OPA2IN3+ — Analog / GPIO / op-amp input |
| Pin 5 | RA5/AN5/OPA2OUT — Analog / op-amp output / GPIO |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1/RA7 — Crystal oscillator input / GPIO |
| Pin 8 | OSC2/RA6 — Crystal oscillator output / GPIO |
| Pin 9 | RC0 — GPIO / digital peripheral |
| Pin 10 | RC1 — GPIO / digital peripheral |
| Pin 11 | RC2 — GPIO / digital peripheral |
| Pin 12 | RC3 — GPIO / digital peripheral |
| Pin 13 | RC4 — GPIO / digital peripheral |
| Pin 14 | RC5 — GPIO / digital peripheral |
| Pin 15 | RC6 — GPIO / digital peripheral |
| Pin 16 | RC7 — GPIO / digital peripheral |
| Pin 17 | RB0 — GPIO / digital peripheral / interrupt |
| Pin 18 | RB1 — GPIO / digital peripheral / interrupt |
| Pin 19 | RB2 — GPIO / digital peripheral / interrupt |
| Pin 20 | RB3 — GPIO / digital peripheral / interrupt |
| Pin 21 | RB4 — GPIO / digital peripheral / interrupt |
| Pin 22 | RB5 — GPIO / digital peripheral / interrupt |
| Pin 23 | RB6/ICSPCLK — GPIO / ICSP clock |
| Pin 24 | RB7/ICSPDAT — GPIO / ICSP data |
| Pin 25 | VDD — Positive supply (2.3V-5.5V) |
| Pin 26 | AVDD — Analog positive supply |
| Pin 27 | AVSS — Analog ground |
| Pin 28 | MCLR/VPP/RE3 — Master clear / programming voltage / GPIO |
Typical Applications
PIC16F1776T-I/SO is suitable for 6 applications: LED Lighting Control, Switched-Mode Power Supply (SMPS), Battery Charging Management, DC-DC Converter Control, Motor Control (BLDC, Stepper), General-Purpose Embedded Control.
LED Lighting Control
The PIC16F1776's 16-bit PWM with complementary waveform generator and 10-bit ADCC make it ideal for LED lighting drivers requiring dimming and color-mixing. The integrated slope-compensation hardware simplifies constant-current buck/boost LED topology. With 14KB Flash it supports DMX, DALI, or proprietary lighting protocols. Operating from 2.3V-5.5V, the device suits battery-powered fixtures; XLP sleep below 100 nA preserves standby battery. In a 50W RGBW fixture, the part directly drives four 16-bit PWM channels and samples feedback current via ADCC for closed-loop regulation.
Recommended
Switched-Mode Power Supply (SMPS)
The PIC16F1776 is purpose-built for SMPS controllers with built-in slope compensation, peak current mode control, and high-resolution 16-bit PWM. It can implement peak current mode buck, boost, SEPIC, and flyback topologies without external analog ICs. The integrated op-amps close the current feedback loop, and ADCC performs fast cycle-by-cycle current sensing. 32MHz CPU allows real-time control loops up to ~250kHz switching frequency. In a 24V-to-5V/2A isolated flyback, the PIC16F1776 replaces a dedicated SMPS controller plus MCU combination.
Recommended
Battery Charging Management
For Li-ion, lead-acid, or NiMH battery chargers, the PIC16F1776 combines ADCC for current/voltage sense with 16-bit PWM for charge profile control. The integrated op-amps build constant-current/constant-voltage loops, while Configurable Logic Cells (CLC) implement hardware safety interlocks. XLP low-power modes support sleep-and-wake chargers with months of standby. The 14KB Flash accommodates CC-CV profiles, temperature compensation, and SMBus/I2C host interface. In a multi-cell Li-ion charger, it terminates on -dV/dt or timer, with 0.5% voltage accuracy from the 10-bit ADCC.
Recommended
DC-DC Converter Control
Synchronous and asynchronous DC-DC converter designs benefit from the PIC16F1776's high-speed PWM and on-chip op-amps that sense inductor current. The device's configurable logic cells enable hardware-driven synchronous rectification timing, and CLC can implement programmable dead-time control. The 32MHz core supports 4th-order digital compensators. With wide VDD range (2.3V-5.5V), the same firmware runs on 3.3V and 5V buses. For a 60W synchronous buck at 500kHz switching, the part performs digital voltage positioning and adaptive voltage scaling.
Recommended
Motor Control (BLDC, Stepper)
PIC16F1776's six 16-bit PWM outputs natively drive three-phase BLDC bridges with complementary switching and dead-band control. The on-chip op-amps condition back-EMF signals from the motor windings, while CLC implements hardware commutation triggers. 32MHz CPU runs sensorless FOC algorithms at reasonable rates. 14KB Flash stores tuning tables and fault-handling. The 28-SOIC footprint suits compact motor-driver PCBs for fans, pumps, and small appliances. In a 24V BLDC fan, the part performs closed-loop RPM control with stall detection.
Recommended
General-Purpose Embedded Control
Beyond power and lighting, the PIC16F1776 functions as a flexible general-purpose MCU for industrial sensor interfaces, IoT edge nodes, and human-machine interfaces. Its 25 I/O pins, PPS configurability, and 32MHz speed fit sensor aggregation, keypad scanning, and UART/SPI/I2C bridging. XLP modes support coin-cell applications with years of battery life. The 14KB Flash and 1KB RAM are sufficient for small RTOS or state-machine designs. In a process-control module, the part aggregates thermocouples, drives relays, and reports via Modbus over UART.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1776T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1776-I/SO | PIC16F1773-I/SO | PIC16F1769-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295") | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Flash Memory | 14 KB | 14 KB | 7 KB | 8 KB |
| RAM | 1 KB | 1 KB | 512 bytes | 1 KB |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| ADC | 10-bit ADCC | 10-bit ADCC | 10-bit ADCC | 10-bit ADC |
| Integrated Op-Amps | Yes (multiple) | Yes (multiple) | Yes (reduced) | Limited |
| 16-bit PWM | Yes | Yes | Yes | Yes |
| Approx. Unit Price (1pc) | $2.85 | $2.85 | $2.20 | $2.40 |
Key Differentiators
- Highest Flash in PIC16F177x SOIC family (vs PIC16F1773-I/SO)
- Integrated op-amps and slope compensation (vs PIC16F1769-I/SO)
- XLP ultra-low-power sleep modes (vs PIC16F1709-I/SO)
Design Notes
Place a 0.1uF ceramic bypass capacitor as close as possible to VDD pin (pin 25) and a 10uF bulk capacitor on AVdd (pin 26). Use separate analog and digital ground planes joined at a single point near AVss (pin 27). Keep crystal traces short and surrounded by ground. Pin 1 indicator: dot at top-left of 28-SOIC. PPS remapping must be configured before peripherals can use non-default pins; lock PPS in firmware before critical functions.
At maximum 32MHz and 5.5V, the PIC16F1776T-I/SO dissipates under 50mW. Estimated: theta_JA for 28-SOIC is ~70 C/W in still air. At 85C industrial temperature max and 50mW dissipation, junction rises ~3.5C above ambient - well within the 150C TJ max. No heatsink required; standard copper pour is sufficient.
Do not leave ICSPDAT/ICSPCLK (RB6/RB7) floating in production - add 10k pull-ups. Ensure MCLR (pin 28) has a 10k pull-up to VDD; the in-circuit serial programming requires proper MCLR rise time. Avoid driving op-amp outputs beyond the rail - the integrated op-amps have rail-to-rail outputs but limited output current. When using ADCC in burst-averaging mode, allow acquisition time before triggering.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free (Pb-free) packaging. Not AEC-Q100 qualified - PIC16F1776T-I/SO targets industrial and consumer markets.
