PIC16F1776-I/SP - 8-bit 32MHz 14KB Flash MCU 28-SPDIP | Microchip
MPN: PIC16F1776-I/SP ✓ Hoạt độngPIC16F1776-I/SP Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1776-I/SP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F1776-I/SP (cùng hình factor và footprint) — khác nhau ở Package, ADC, DAC, Timers, Operating Temperature.
PIC16F1776-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1778-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1716-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1718-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1769-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1619-I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1776-I/SP Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 28-pin SPDIP (0.300 inch / 7.62 mm row spacing, through-hole) |
| Kiểu lắp đặt | Through-Hole (DIP) |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C (Industrial, I grade) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F1776-I/SP
| Chân 1 | RA3/AN3/C1IN+/C2IN+/C3IN+/OP1-/OP1+ — Bidirectional I/O; analog input; comparator input; op-amp 1 inverting/non-inverting input |
| Chân 2 | RA4/AN4/C1OUT/T0CKI/OP1OUT — Bidirectional I/O; analog input; comparator 1 output; Timer0 clock; op-amp 1 output |
| Chân 3 | RA5/AN5/VCAP/DAC1OUT/OP2-/OP2+ — Bidirectional I/O; analog input; voltage regulator capacitor; DAC1 output; op-amp 2 input |
| Chân 4 | RA6/AN6/OSC2/CLKOUT/OP2OUT — Bidirectional I/O; analog input; oscillator output; clock output; op-amp 2 output |
| Chân 5 | RA7/AN7/OSC1/CLKIN/OP3-/OP3+ — Bidirectional I/O; analog input; oscillator input; op-amp 3 input |
| Chân 6 | VSS — Ground reference |
| Chân 7 | VDD — Positive power supply (1.8V to 5.5V) |
| Chân 8 | RB0/AN12/CCP4/SRI/OP3OUT — Bidirectional I/O; analog input; Capture/Compare/PWM; op-amp 3 output |
| Chân 9 | RB1/AN10/C1IN3-/C2IN3-/C3IN3-/PWM3 — Bidirectional I/O; analog input; comparator input; PWM output 3 |
| Chân 10 | RB2/AN8/PWM2 — Bidirectional I/O; analog input; PWM output 2 |
| Chân 11 | RB3/AN9/C1IN2-/C2IN2-/C3IN2-/PWM1 — Bidirectional I/O; analog input; comparator input; PWM output 1 |
| Chân 12 | RB4/AN11/PWM4 — Bidirectional I/O; analog input; PWM output 4 |
| Chân 13 | RB5/AN13/PWM5 — Bidirectional I/O; analog input; PWM output 5 |
| Chân 14 | RB6/ICSPCLK/ICDCLK — Bidirectional I/O; in-circuit serial programming clock / debug clock |
| Chân 15 | RB7/ICSPDAT/ICDDAT — Bidirectional I/O; in-circuit serial programming data / debug data |
| Chân 16 | RC0/SOSCO/T1CKI — Bidirectional I/O; secondary oscillator output; Timer1 clock input |
| Chân 17 | RC1/SOSCI/CCP2 — Bidirectional I/O; secondary oscillator input; Capture/Compare/PWM 2 |
| Chân 18 | RC2/AN14/PWM6 — Bidirectional I/O; analog input; PWM output 6 |
| Chân 19 | RC3/AN15/PWM7 — Bidirectional I/O; analog input; PWM output 7 |
| Chân 20 | RC4/AN16/PWM8/DAC2OUT — Bidirectional I/O; analog input; PWM output 8; DAC2 output |
| Chân 21 | RC5/AN17/PWM9 — Bidirectional I/O; analog input; PWM output 9 |
| Chân 22 | RC6/AN18/SS/TX/CK — Bidirectional I/O; analog input; SPI slave select; EUSART TX/CK |
| Chân 23 | RC7/AN19/SDI/RX/DT — Bidirectional I/O; analog input; SPI data in; EUSART RX/DT |
| Chân 24 | RE3/MCLR/VPP — Master Clear reset (active low); programming voltage |
| Chân 25 | RA0/AN0/C1IN0-/C2IN0-/C3IN0-/DAC1OUT2 — Bidirectional I/O; analog input; comparator input; DAC1 alt output |
| Chân 26 | RA1/AN1/C1IN1-/C2IN1-/C3IN1-/DAC1REF- — Bidirectional I/O; analog input; comparator input; DAC1 reference negative |
| Chân 27 | RA2/AN2/DAC1REF+/VREF+ — Bidirectional I/O; analog input; DAC1 reference positive; ADC voltage reference |
| Chân 28 | AVDD — Analog power supply (connect to VDD or filtered analog rail) |
Ứng dụng tiêu biểu
PIC16F1776-I/SP phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1776-I/SP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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) |
Bảo phân biệt quan trọng
- Three integrated Intelligent Analog op-amps eliminate external analog components (vsPIC16F1716-I/SP)
- Dedicated Power Control PWM with hardware slope compensation (vsPIC16F1718-I/SP)
- 14 KB flash with Intelligent Analog balances cost and capability (vsPIC16F1778-I/SP)
- Industrial temperature grade for harsh environments (vsPIC16F1776-E/SP)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
