PIC16LF1776-I/SS - 8-Bit MCU, 14KB Flash, 10-bit DAC | Microchip
MPN: PIC16LF1776-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.07 | $207.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.45 | $1,450.00 |
PIC16LF1776-I/SS Overview
An 8-bit microcontroller (MCU) is a small computing system on a single integrated circuit that combines a CPU, memory, and peripherals. Within the embedded system hierarchy, an 8-bit MCU belongs to the microcontroller family -> microcomputer -> embedded processor -> semiconductor IC. The PIC16F177X series is positioned as a high-integration intelligent-analog platform targeting LED lighting, power conversion, battery charging, and motor control.
Key features include Core Independent Peripherals (CIPs) such as Complementary Waveform Generators (CWG), Numerically Controlled Oscillator (NCO), Configurable Logic Cells (CLC), and Zero-Cross Detect (ZCD). The 10-bit DAC operates up to 5kSPS with selectable reference sources. The four on-chip op-amps can be configured as rail-to-rail input/output stages with programmable gain, eliminating external analog components in many designs.
Architecturally, the device uses a 14-bit instruction word RISC core with 8-level deep hardware stack and 49 instruction set. The XLP architecture achieves nanoWatt sleep currents below 50 nA typical, making it suitable for battery-powered always-on applications. In-circuit debugging via ICD and programming via ICSP are supported through dedicated pins.
Typical applications include multi-string LED lighting drivers, switch-mode power supply (SMPS) digital control loops, BLDC motor commutation, battery charging profiles, and general-purpose mixed-signal embedded platforms where integration of analog and digital peripherals reduces BOM and PCB area.
When designing with this MCU, allocate proper decoupling (100nF plus 10uF bulk near VDD) and ensure unused op-amp/CWG outputs are terminated per datasheet guidance to avoid parasitic current paths. The 28-SSOP footprint is breadboard-friendly for prototyping but lacks an exposed thermal pad; for >50mA continuous loads, plan copper area carefully.
This page synthesizes distributor pricing from DigiKey, Mouser, Avnet, and LCSC, drop-in pin-compatible same-family alternatives, and practical design considerations not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1776-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 PIC16LF1776-I/SS (same form factor and footprint) — differing in Operating Temperature, Package, Program Memory (Flash), ADC, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1777-I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1776-I/SS
✅ Drop-In✓ In Stock
$2.04 / Unit
View Datasheet →PIC16LF1773-I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1769-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1768-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF1776-I/SS Maximum Ratings & Electrical Characteristics
| Architecture | PIC 8-bit RISC, 14-bit instruction word |
| Family | PIC16F (eXtreme Low Power - XLP) |
| Program Memory (Flash) | 14KB (8K x 14 words) |
| Data Memory (RAM) | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| I/O Pins | 25 (maximum) |
| 10-bit DAC | 1 module (5kSPS) |
| 10-bit ADC | 4 modules |
| 5-bit DAC | 4 modules |
| Op-Amps | 4 on-chip |
| Comparators | Yes |
| PWM Outputs | Multiple (CCP/ECCP) |
| Package | 28-pin SSOP (5.30 mm body width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1776-I/SS Pin Configuration
| Pin 1 | RA0/AN0/C1IN+/DAC1OUT/OPA1IN0+ — PORTA bit 0 / Analog input 0 / Comparator 1 non-inverting / 10-bit DAC output / Op-amp 1 input+ |
| Pin 2 | RA1/AN1/C1IN-/DAC1REF+/OPA1IN0- — PORTA bit 1 / Analog input 1 / Comparator 1 inverting / DAC reference / Op-amp 1 input- |
| Pin 3 | RA2/AN2/DAC1REF-/OPA1OUT — PORTA bit 2 / Analog input 2 / DAC reference / Op-amp 1 output |
| Pin 4 | RA3/AN3/VREF+/C1OUT — PORTA bit 3 / Analog input 3 / Voltage reference+ / Comparator 1 output |
| Pin 5 | RA4/AN4/VREF-/C2OUT/T0CKI — PORTA bit 4 / Analog input 4 / Voltage reference- / Comparator 2 output / Timer 0 clock |
| Pin 6 | RA5/AN5/OPA2IN0+ — PORTA bit 5 / Analog input 5 / Op-amp 2 input+ |
| Pin 7 | RA6/AN6/OPA2IN0-/OSC2 — PORTA bit 6 / Analog input 6 / Op-amp 2 input- / Oscillator output |
| Pin 8 | RA7/AN7/OPA2OUT/OSC1 — PORTA bit 7 / Analog input 7 / Op-amp 2 output / Oscillator input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RB0/AN8/CCP4/OPA3IN0+ — PORTB bit 0 / Analog input 8 / CCP4 PWM / Op-amp 3 input+ |
| Pin 11 | RB1/AN9/CWG1FLT/OPA3OUT — PORTB bit 1 / Analog input 9 / CWG fault input / Op-amp 3 output |
| Pin 12 | RB2/AN10/OPA4IN0+ — PORTB bit 2 / Analog input 10 / Op-amp 4 input+ |
| Pin 13 | RB3/AN11/OPA4IN0-/PGM — PORTB bit 3 / Analog input 11 / Op-amp 4 input- / ICSP programming |
| Pin 14 | RB4/AN12/SDA1 — PORTB bit 4 / Analog input 12 / I2C data |
| Pin 15 | RB5/AN13/SCL1 — PORTB bit 5 / Analog input 13 / I2C clock |
| Pin 16 | RB6/ICSPCLK — PORTB bit 6 / In-circuit serial programming clock |
| Pin 17 | RB7/ICSPDAT — PORTB bit 7 / In-circuit serial programming data |
| Pin 18 | VSS — Ground reference (second VSS) |
| Pin 19 | VDD — Positive supply (1.8V-3.6V) |
| Pin 20 | RC0/PWM3 — PORTC bit 0 / PWM3 output |
| Pin 21 | RC1/PWM4 — PORTC bit 1 / PWM4 output |
| Pin 22 | RC2/CCP1/PWM5 — PORTC bit 2 / CCP1 / PWM5 |
| Pin 23 | RC3/CCP2/PWM6 — PORTC bit 3 / CCP2 / PWM6 |
| Pin 24 | RC4/CCP3 — PORTC bit 4 / CCP3 |
| Pin 25 | RC5/CCP5 — PORTC bit 5 / CCP5 |
| Pin 26 | RC6/CCP6/TX/CK — PORTC bit 6 / CCP6 / UART TX / Clock |
| Pin 27 | RC7/CCP7/RX/DT — PORTEC bit 7 / CCP7 / UART RX / Data |
| Pin 28 | MCLR/VPP/RE3 — Master Clear (reset) / Programming voltage / PORTE bit 3 |
Typical Applications
PIC16LF1776-I/SS is suitable for 6 applications: Multi-String LED Lighting Drivers, Switch-Mode Power Supply (SMPS) Digital Control, BLDC and PMSM Motor Control, Battery Charging Profiles (Li-ion / LiFePO4), Industrial Sensor Hub and 4-20mA Transmitter, IoT Sensor Node with Always-On Wake-Up.
Multi-String LED Lighting Drivers
The PIC16LF1776-I/SS is engineered for multi-channel LED lighting applications where its four 5-bit DACs, four 10-bit ADCs, and dedicated slope-compensation logic eliminate external analog ICs. With 14KB Flash and 32MHz CPU, the device runs current-control loops at >10kHz per channel while the XLP deep-sleep mode below 50 nA supports always-on occupancy sensors. The four on-chip op-amps can be configured as rail-to-rail transconductance stages for each LED string, providing closed-loop current regulation across dimming transitions. The 28-SSOP footprint is compact enough for MR16 and PAR-style bulb retrofits, and the 1.8-3.6V VDD range matches single-cell Li-ion or 3.3V regulated supplies commonly used in commercial luminaires.
Recommended
Switch-Mode Power Supply (SMPS) Digital Control
The PIC16LF1776-I/SS delivers robust digital control for SMPS topologies including buck, boost, flyback, and PFC converters. Its Complementary Waveform Generator (CWG) outputs dead-band-controlled switching waveforms up to 100kHz, the NCO provides high-resolution frequency synthesis for synchronous rectifiers, and the four 5-bit DACs generate slope compensation for peak-current-mode control. The four 10-bit ADCs sample feedback signals (Vout, Iprimary, temperature) at >100kSPS aggregate. At 32MHz/8MIPS, the device has bandwidth for two-pole-two-zero compensators and valley-mode switching. The integrated four op-amps condition primary-side current-sense and secondary-side voltage feedback, eliminating external analog components and reducing the BOM.
Recommended
BLDC and PMSM Motor Control
The PIC16LF1776-I/SS supports sensorless and Hall-sensor BLDC motor commutation using its Configurable Logic Cells (CLC), CWG, and on-chip op-amps for back-EMF zero-cross detection. With 14KB Flash the firmware fits trapezoidal, sinusoidal, or field-oriented control (FOC) tables. The four 10-bit ADCs read three phase currents plus DC-bus voltage at synchronous sample points aligned to the PWM, while the 32MHz CPU executes Park/Clarke transforms in <2us per cycle. The 1.8-3.6V supply rail suits low-voltage fan, pump, and small-drone BLDC drives; pair with an external gate driver such as the MCP8024 for the 3-phase inverter stage.
Recommended
Battery Charging Profiles (Li-ion / LiFePO4)
The PIC16LF1776-I/SS implements CC/CV charging algorithms for single and multi-cell Li-ion / LiFePO4 battery packs with its integrated 10-bit DAC for reference voltage programming and four ADCs for Vbat, Icharge, Vtemp, and pack ID. The 256-byte EEPROM stores cell-chemistry parameters and cycle-count logs, while the 14KB Flash accommodates profile tables for multiple battery chemistries. XLP deep-sleep below 50 nA keeps the charger quiescent when no source is connected, and the 1.8-3.6V VDD supports direct USB or regulated solar-panel input rails. The CLC blocks can implement windowed current-sense comparators and over-temperature protection, reducing discrete logic in compact charger modules.
Recommended
Industrial Sensor Hub and 4-20mA Transmitter
The PIC16LF1776-I/SS functions as an industrial sensor-conditioning hub, digitizing strain-gauge, RTD, and thermocouple signals with its four on-chip op-amps and four 10-bit ADCs. The 10-bit DAC drives the 4-20mA current loop via an external NPN/P-MOSFET pair. Industrial-grade -40C to +85C operation is supported. The 32MHz CPU executes 2nd-order linearization polynomials and HART-like FSK modulation. The 28-SSOP package is footprint-compatible with established 4-20mA transmitter boards, simplifying retrofits where the LF supply range (1.8-3.6V) is preferred for loop-powered designs with intrinsic safety constraints.
Recommended
IoT Sensor Node with Always-On Wake-Up
The PIC16LF1776-I/SS is ideal for battery-powered IoT sensor nodes where the XLP nanoWatt technology extends coin-cell life into years. Deep-sleep currents below 50 nA with RTCC allow periodic wake-up to sample, transmit via a companion radio module, and re-enter sleep within milliseconds. The 14KB Flash accommodates small MQTT-SN or LoRaWAN stack handlers, and the four 10-bit ADCs read multiple analog sensors (temperature, humidity, gas) in sequence. The 1.8-3.6V VDD range matches single-cell Li-ion or 2xAA alkaline, and the 28-SSOP is hand-solder-friendly for prototype builds. The CLC can wake the CPU on a comparator threshold crossing without CPU intervention, saving additional power.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1776-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1777-I/SS | PIC16F1776-I/SS | PIC16LF1773-I/SS | PIC16LF1769-I/SS | PIC16LF1768-I/SS |
|---|---|---|---|---|---|---|
| Brand | 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 |
| Program Memory (Flash) | 14 KB | 28 KB | 14 KB | 7 KB | 14 KB | 7 KB |
| Data Memory (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 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum Frequency | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| On-Chip Op-Amps | 4 | 4 | 4 | 3 | 4 | 3 |
| 10-bit ADC Modules | 4 | 4 | 4 | 3 | 4 | 3 |
| XLP Deep-Sleep Current | ~25 nA (typical) | ~25 nA | ~50 nA | ~25 nA | ~25 nA | ~25 nA |
| Approx. 1k Price (USD) | $1.45 | $1.65 | $1.55 | $1.30 | $1.45 | $1.30 |
Key Differentiators
- Higher Flash density than sibling PIC16LF1769 (vs PIC16LF1769-I/SS)
- Wider supply voltage range than LF prefix alternative (vs PIC16LF1768-I/SS)
- Four on-chip op-amps eliminate external analog ICs (vs PIC16LF1507-I/SS)
Design Notes
Place a 100nF ceramic decoupling capacitor within 3mm of each VDD pin (pin 19 plus any second VDD on variant packages) and a 10uF bulk capacitor on the same node. For battery applications with peak transient currents up to 50mA during ADC burst sampling, the 10uF bulk prevents VDD droop below 1.8V minimum. For extremely low-power sleep operation, also place a 100nF on the MCLR/VPP pin (pin 28) to prevent spurious resets during wake-up transitions.
The 28-SSOP package has a thermal resistance (theta_JA) of approximately 90-100 C/W, limiting continuous power dissipation to under 100mW at room temperature without copper pour. For applications driving GPIO at full 25mA source/sink per pin, derate by 50% when all PORTs switch simultaneously. For LED driving applications that dissipate >50mW continuous through the MCU, use a 1-square-inch copper flood under the SSOP exposed area or migrate to a QFN variant for better heat-sinking.
Route the ICSP programming pins (RB6/ICSPCLK, RB7/ICSPDAT) directly to a 2x3 0.1-inch programming header to ensure in-circuit debugging works in production. Keep the trace length under 50mm to avoid programming errors. Place the programming header at the board edge for easy access. Decouple MCLR with a 10k pull-up to VDD plus a 100nF capacitor for clean reset behavior - never leave MCLR floating or the MCU may enter reset on EMI events.
When migrating between PIC16LF1776-I/SS and PIC16F1776-I/SS, note the LF version's 3.6V maximum VDD - applying 5V will damage the LF device. Verify the supply rail before swapping. Also note that pins 1-8 share analog and digital functions; configure the ANSELx register to disable analog on pins used as digital GPIO, otherwise input thresholds and output drive strength are degraded. Reference datasheet 40001824D section 17 for full pin-mux configuration.
For SMPS and motor-control applications, route the analog ground (VSS_AVDD if used) separately from the digital power ground. The PIC16LF1776-I/SS uses pin 9 and pin 18 as VSS; tie both directly to a single ground plane with a short trace to a star-point near the analog op-amp supply decoupling. Keep switching-node traces (CWG outputs on PORTC) at least 3mm away from the analog op-amp inputs on PORTA to minimize coupled noise that degrades ADC readings by 1-2 LSBs.
Compliance Information
RoHS and REACH compliant per Microchip product environmental compliance program. Not AEC-Q100 qualified - choose AEC-Q100 equivalent from PIC16F1776-I/SS automotive family for vehicle applications. Lead-free and halogen-free (Microchip Green compliance per product datasheet).
