PIC16F1776-I/SP - 8-bit 32MHz 14KB Flash MCU 28-SPDIP | Microchip
MPN: PIC16F1776-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.79 | $27.90 |
| 100 | $2.35 | $235.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.78 | $1,780.00 |
PIC16F1776-I/SP Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a configurable set of peripheral blocks (ADC, timers, PWM, communication ports). The PIC16F1776 belongs to the broader category of 8-bit microcontrollers, sitting hierarchically between the simplified PIC10/12/16 baseline family and the higher-performance 16-bit dsPIC/PIC24 families. Its enhanced mid-range core with 49 instructions and 14-bit instruction word delivers deterministic real-time response favored in cost-sensitive embedded designs.
Key features of the PIC16F1776-I/SP include up to 28 I/O pins, an internal oscillator, four 16-bit timers, multiple PWM channels with complementary outputs, a 10-bit ADC with computation, three op-amps (Intelligent Analog), two 10-bit DACs, two comparators, and zero-cross detection. It supports up to four 16-bit PWM channels suitable for power-supply and lighting control. The 28-SPDIP package simplifies hand prototyping and rework in lab environments.
From an architecture standpoint, the PIC16F1776 leverages a Harvard RISC core with separate program and data buses, allowing simultaneous instruction fetch and operand access. The on-chip Charge Time Measurement Unit (CTMU) supports capacitive touch and time-of-flight measurements, while the hardware Limit Generator and Slope Compensation blocks offload power-supply control loops from software, dramatically reducing firmware complexity for SMPS designs.
Typical applications include LED lighting drivers, switched-mode power supplies (SMPS), DC-DC converters, battery chargers, brushless DC motor control, and general-purpose industrial sensing. The wide operating voltage (1.8 V to 5.5 V) and integrated op-amps reduce external analog component count.
When designing with this MCU, ensure the ICSP programming header is accessible for field firmware updates. For SMPS designs, use the dedicated 16-bit PWM with programmable dead-band and slope compensation rather than bit-banging in firmware. Adequate decoupling (100 nF + 10 µF) near VDD and AVDD pins is essential to keep ADC readings stable.
This page synthesizes distributor pricing, drop-in PIC16 alternatives, application notes, and practical design guidance not found on the manufacturer datasheet alone, helping engineers evaluate the PIC16F1776-I/SP against modern 32-bit alternatives and find verified same-package drop-in replacements.
Drop-in alternatives for PIC16F1776-I/SP — 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 PIC16F1776-I/SP (same form factor and footprint) — differing in ADC, Package, DAC, Timers, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1776-E/SP
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →PIC16F1778-I/SP
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC16F1716-I/SP
✅ Drop-In✓ In Stock
$0.99 / Unit
View Datasheet →PIC16F1718-I/SP
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16F1769-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1619-I/P
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1776-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Maximum CPU Frequency | 32 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz (1-cycle) / 125 ns at 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Data EEPROM | 128 bytes (per PIC16F177x family) |
| ADC | 10-bit, multiple channels |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | Up to 28 |
| Timers | 4 x 16-bit / 2 x 8-bit |
| PWM Channels | Up to 4 x 16-bit with complementary outputs and dead-band |
| On-chip Operational Amplifiers | 3 x Intelligent Analog op-amps |
| Comparators | 2 |
| 10-bit DAC Modules | 2 |
| Communication Peripherals | I2C, SPI, EUSART with LIN support |
| Package | 28-pin SPDIP (0.300 inch / 7.62 mm row spacing, through-hole) |
| Mounting Type | Through-Hole (DIP) |
| Operating Temperature Range | -40 °C to +85 °C (Industrial, I grade) |
| RoHS Status | Compliant |
PIC16F1776-I/SP Pin Configuration
| Pin 1 | RA3/AN3/C1IN+/C2IN+/C3IN+/OP1-/OP1+ — Bidirectional I/O; analog input; comparator input; op-amp 1 inverting/non-inverting input |
| Pin 2 | RA4/AN4/C1OUT/T0CKI/OP1OUT — Bidirectional I/O; analog input; comparator 1 output; Timer0 clock; op-amp 1 output |
| Pin 3 | RA5/AN5/VCAP/DAC1OUT/OP2-/OP2+ — Bidirectional I/O; analog input; voltage regulator capacitor; DAC1 output; op-amp 2 input |
| Pin 4 | RA6/AN6/OSC2/CLKOUT/OP2OUT — Bidirectional I/O; analog input; oscillator output; clock output; op-amp 2 output |
| Pin 5 | RA7/AN7/OSC1/CLKIN/OP3-/OP3+ — Bidirectional I/O; analog input; oscillator input; op-amp 3 input |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive power supply (1.8V to 5.5V) |
| Pin 8 | RB0/AN12/CCP4/SRI/OP3OUT — Bidirectional I/O; analog input; Capture/Compare/PWM; op-amp 3 output |
| Pin 9 | RB1/AN10/C1IN3-/C2IN3-/C3IN3-/PWM3 — Bidirectional I/O; analog input; comparator input; PWM output 3 |
| Pin 10 | RB2/AN8/PWM2 — Bidirectional I/O; analog input; PWM output 2 |
| Pin 11 | RB3/AN9/C1IN2-/C2IN2-/C3IN2-/PWM1 — Bidirectional I/O; analog input; comparator input; PWM output 1 |
| Pin 12 | RB4/AN11/PWM4 — Bidirectional I/O; analog input; PWM output 4 |
| Pin 13 | RB5/AN13/PWM5 — Bidirectional I/O; analog input; PWM output 5 |
| Pin 14 | RB6/ICSPCLK/ICDCLK — Bidirectional I/O; in-circuit serial programming clock / debug clock |
| Pin 15 | RB7/ICSPDAT/ICDDAT — Bidirectional I/O; in-circuit serial programming data / debug data |
| Pin 16 | RC0/SOSCO/T1CKI — Bidirectional I/O; secondary oscillator output; Timer1 clock input |
| Pin 17 | RC1/SOSCI/CCP2 — Bidirectional I/O; secondary oscillator input; Capture/Compare/PWM 2 |
| Pin 18 | RC2/AN14/PWM6 — Bidirectional I/O; analog input; PWM output 6 |
| Pin 19 | RC3/AN15/PWM7 — Bidirectional I/O; analog input; PWM output 7 |
| Pin 20 | RC4/AN16/PWM8/DAC2OUT — Bidirectional I/O; analog input; PWM output 8; DAC2 output |
| Pin 21 | RC5/AN17/PWM9 — Bidirectional I/O; analog input; PWM output 9 |
| Pin 22 | RC6/AN18/SS/TX/CK — Bidirectional I/O; analog input; SPI slave select; EUSART TX/CK |
| Pin 23 | RC7/AN19/SDI/RX/DT — Bidirectional I/O; analog input; SPI data in; EUSART RX/DT |
| Pin 24 | RE3/MCLR/VPP — Master Clear reset (active low); programming voltage |
| Pin 25 | RA0/AN0/C1IN0-/C2IN0-/C3IN0-/DAC1OUT2 — Bidirectional I/O; analog input; comparator input; DAC1 alt output |
| Pin 26 | RA1/AN1/C1IN1-/C2IN1-/C3IN1-/DAC1REF- — Bidirectional I/O; analog input; comparator input; DAC1 reference negative |
| Pin 27 | RA2/AN2/DAC1REF+/VREF+ — Bidirectional I/O; analog input; DAC1 reference positive; ADC voltage reference |
| Pin 28 | AVDD — Analog power supply (connect to VDD or filtered analog rail) |
Typical Applications
PIC16F1776-I/SP is suitable for 6 applications: LED Lighting Drivers, Switch-Mode Power Supplies (SMPS), Battery Charging Systems, BLDC and DC Motor Control, Industrial Sensing and Process Control, General Purpose Embedded Control.
LED Lighting Drivers
The PIC16F1776-I/SP is purpose-built for LED lighting applications, combining four 16-bit PWM channels with programmable dead-band and three integrated on-chip op-amps. The Intelligent Analog peripherals enable closed-loop current regulation for constant-current LED strings without external transconductance amplifiers. With 32 MHz CPU speed and 1 KB RAM, the MCU implements dimming curves, color-mixing algorithms, and DMX/RDM protocols in firmware. Compared with a discrete 555-timer LED driver, the PIC16F1776-I/SP reduces BOM count and supports field firmware upgrades over ICSP. Operating from 1.8 V to 5.5 V simplifies direct battery-powered lantern designs.
Recommended
Switch-Mode Power Supplies (SMPS)
The PIC16F1776-I/SP is Microchip's flagship PIC16 family MCU for digital SMPS control, integrating the Power Control PWM module with hardware slope compensation. Peak current-mode control of buck, boost, flyback, and SEPIC converters can be implemented with three op-amps closing the voltage and current feedback loops. The 32 MHz CPU bandwidth and 200 ns ADC sampling are sufficient for sub-microsecond control loop updates at 100-500 kHz switching frequencies. Compared with analog UC3842 controllers, the digital approach enables adaptive dead-time, soft-start profiles, and telemetry output via UART or I2C for predictive maintenance.
Recommended
Battery Charging Systems
For lithium-ion, LiFePO4, and lead-acid battery chargers, the PIC16F1776-I/SP's integrated op-amps measure charge current and battery voltage while the 16-bit PWM regulates the buck converter duty cycle. The 10-bit ADC with computation handles CC/CV (constant-current / constant-voltage) charge profiles, and the integrated temperature-indicator module provides battery thermal protection. Compared with a discrete charger using op-amps plus a comparator, the PIC16F1776-I/SP solution achieves higher accuracy and supports chemistry-specific charge algorithms in firmware.
Recommended
BLDC and DC Motor Control
The PIC16F1776-I/SP drives brushless DC (BLDC) and brushed DC motors using its complementary 16-bit PWM outputs with programmable dead-band, eliminating shoot-through in H-bridge configurations. The three on-chip op-amps sample motor phase currents for sensor-less back-EMF or current-sense-based commutation. Operating from 1.8 V to 5.5 V and 32 MHz CPU speed, the MCU runs field-oriented control (FOC) or trapezoidal commutation algorithms in real time. The 28-SPDIP package is preferred for hand-prototyped motor-control boards because each pin is accessible for scope probing during tuning.
Recommended
Industrial Sensing and Process Control
In factory-automation and process-control applications, the PIC16F1776-I/SP provides 10-bit ADC channels for analog sensors, EUSART for Modbus RTU communication, and op-amp signal conditioning on-chip. The 1 KB RAM and 14 KB flash are sufficient for PID control loops, sensor linearization tables, and HMI keypad scanning. With an industrial temperature range of -40 °C to +85 °C (-I grade) and wide 1.8 V to 5.5 V supply tolerance, it operates reliably on 24V-sensor rails with simple LDO regulation. Compared with an ASIC, the PIC16F1776-I/SP allows late-stage firmware customization for OEM-specific I/O mapping.
Recommended
General Purpose Embedded Control
Beyond its specialized analog and SMPS features, the PIC16F1776-I/SP functions as a general-purpose 8-bit MCU for consumer appliances, IoT edge nodes, and hobbyist projects. With 28 I/O, multiple timers, I2C/SPI/EUSART peripherals, and 14 KB flash, it can drive character LCDs, scan keypads, and manage battery-powered peripherals. The 32 MHz CPU speed is adequate for sensor-fusion light-duty tasks. Compared with the PIC16F877A legacy device, the PIC16F1776-I/SP offers higher analog integration at similar cost, making it a drop-in upgrade path for legacy designs that have outgrown the 877A's peripheral set.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1776-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1776-E/SP | PIC16F1778-I/SP | PIC16F1716-I/SP | PIC16F1718-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP (same) | 28-SPDIP (same) | 28-SPDIP (same) | 28-SPDIP (same) |
| Flash Program Memory | 14 KB | 14 KB | 28 KB | 28 KB | 28 KB |
| Data RAM | 1 KB | 1 KB | 2 KB | 2 KB | 2 KB |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Integrated Op-Amps | 3 | 3 | 3 | 0 (no Intelligent Analog op-amps) | 0 |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature (I / E grade) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Three integrated Intelligent Analog op-amps eliminate external analog components (vs PIC16F1716-I/SP)
- Dedicated Power Control PWM with hardware slope compensation (vs PIC16F1718-I/SP)
- 14 KB flash with Intelligent Analog balances cost and capability (vs PIC16F1778-I/SP)
- Industrial temperature grade for harsh environments (vs PIC16F1776-E/SP)
Design Notes
Place a 100 nF decoupling capacitor directly between each VDD/AVDD pair and VSS within 2 mm of the MCU pins. Add a bulk 10 uF tantalum or ceramic capacitor on the main 3.3 V or 5 V rail. The PIC16F1776's analog reference (VREF+) requires a separate 1-10 uF ceramic bypass capacitor if used; insufficient decoupling introduces 50/60 Hz noise on ADC readings.
Estimated: At maximum operating frequency of 32 MHz and 5.5 V supply, the PIC16F1776-I/SP core current is typically around 7-9 mA active, dissipating roughly 50 mW in the 28-SPDIP package. At industrial ambient temperatures the device operates reliably without heatsinking. For sealed enclosures with reduced airflow, verify junction temperature stays below 125 C using Microchip's thermal calculator and worst-case ambient assumptions.
Keep analog signal traces (AN0-AN19, op-amp inputs/outputs) routed away from digital switching lines and PWM outputs to minimize capacitive coupling. Use a ground pour on the top layer stitched to the bottom ground plane via 4-8 vias placed around the MCU. The MCLR pin requires a 10 kohm pull-up to VDD; in noisy industrial environments add a 100 nF capacitor to ground for hardware-reset debounce.
Do not leave the MCLR pin floating - an unbonded MCLR will pick up noise and cause spurious resets. Do not drive PWM outputs into short circuits during programming - configure them as high-impedance in the CONFIG register before ICSP programming. The ADC result is undefined if the input voltage exceeds AVDD; add external clamping diodes when measuring above-rail signals.
For high-speed SPI communications above 4 MHz, use series resistors (22-33 ohm) on CLK and MOSI lines close to the master to dampen ringing. The ICSP programming pins RB6/ICSPCLK and RB7/ICSPDAT can be used for general I/O after reset, but ensure the ICSP header's GND-VDD-MCLR-CLK-DAT line is present for field firmware updates in production hardware.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -I temperature grade only; AEC-Q100 qualification not available in -I grade - choose automotive-qualified PIC16F1776-E/SP or PIC18F family for AEC-Q100 designs.
