PIC16F76-I/SO - 8-Bit 20MHz 14KB Flash MCU 28-SOIC | Microchip
料号： PIC16F76-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.05 | $30.50 |
| 100 | $2.68 | $268.00 |
| 500 | $2.35 | $1,175.00 |
| 1,000 | $2.1 | $2,100.00 |
PIC16F76-I/SO 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control with low power consumption and minimal external components. Within the broader taxonomy, the PIC16F76 sits in the PIC16F mid-range family -> PIC16F7x sub-family -> 8-bit PIC microcontrollers -> microcontrollers (MCU) -> microcontrollers and processors -> semiconductor. The PIC16F7x family is a mid-range architecture that adds a hardware multiplier, a 14-bit instruction word, and enhanced peripherals such as the MSSP and dual PWM modules, while retaining the classic PIC instruction set that simplifies assembler and C code development.
Key features include 14 KB self-programmable Flash with ICD (In-Circuit Debugger) support, an internal 8 MHz oscillator with PLL multiplier for 20 MHz operation, brown-out reset (BOR), a watchdog timer with on-chip RC oscillator, in-circuit serial programming (ICSP), and an extended industrial temperature grade of -40C to +85C as denoted by the "I" suffix. The 28-pin SOIC package makes the part suitable for prototyping, hobbyist, and industrial control boards where through-hole SO sockets or hand-soldered SOIC footprints are used.
Architecturally, the PIC16F76 uses a Harvard RISC core with a 14-bit program word, single-cycle instruction execution except for branches, and a 35-instruction set. The MSSP module supports both SPI master/slave and I2C master/slave modes, enabling communication with sensors, EEPROMs, and display drivers. The USART supports RS-232/RS-485 asynchronous communication as well as a synchronous 9-bit mode for multi-drop industrial protocols.
Typical applications include industrial automation controllers, HVAC and appliance control boards, sensor signal conditioning front-ends, low-end data loggers, simple closed-loop PID control loops, and educational/training embedded platforms. The combination of ADC, PWM, and serial ports covers most general-purpose control tasks.
When designing with this part, place a 0.1 uF decoupling capacitor close to each VDD pin and bulk capacitance on VDD/VSS rails. The analog VREF+ pin must be tied to VDD or driven from a low-noise reference when ADC accuracy is critical, and unused I/O pins should be configured as outputs low to minimize current consumption in sleep mode.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, helping engineers select and source the PIC16F76-I/SO more effectively.
直接替换替代料： PIC16F76-I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16F76-I/SO （相同外形与封装尺寸） ——差异在于 Package, Serial Interfaces, Core Architecture, Program Memory Size, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC16F73-I/SO
✅ 直接替换✓ 有现货
$2.45 / 个
查看数据手册 →PIC16F876A-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F76-I/SO
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →PIC16F76-I/SO 最大额定值与电气特性
| Core Architecture | 8-bit PIC16 Harvard RISC |
| Program Memory | 14 KB Flash (8K x 14 words) |
| RAM | 368 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 20 MHz |
| Instruction Set | 35 instructions, 14-bit word |
| 电源电压 | 2.0 V to 5.5 V |
| Digital I/O Pins | 22 |
| ADC | 5 channels x 8-bit |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | 2 modules |
| Serial Interfaces | MSSP (SPI/I2C), USART/SCI |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | 28-pin SOIC (SO), wide-body, MS-013 |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Programming/Debug | ICSP, ICD support |
PIC16F76-I/SO 引脚配置
| 引脚 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| 引脚 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| 引脚 3 | RA2/AN2/VREF- — Digital I/O / Analog input 2 / ADC VREF- |
| 引脚 4 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / ADC VREF+ |
| 引脚 5 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| 引脚 6 | RA5/AN4/SS — Digital I/O / Analog input 4 / SPI slave select |
| 引脚 7 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| 引脚 8 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| 引脚 9 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| 引脚 10 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 output |
| 引脚 11 | RC2/CCP1 — Digital I/O / CCP1 output |
| 引脚 12 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| 引脚 13 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| 引脚 14 | RC5/SDO — Digital I/O / SPI data out |
| 引脚 15 | RC6/TX/CK — Digital I/O / USART TX / synchronous clock |
| 引脚 16 | RC7/RX/DT — Digital I/O / USART RX / synchronous data |
| 引脚 17 | VSS — Ground reference |
| 引脚 18 | VDD — Positive supply voltage |
| 引脚 19 | RB0/INT — Digital I/O / external interrupt input |
| 引脚 20 | RB1 — Digital I/O |
| 引脚 21 | RB2 — Digital I/O |
| 引脚 22 | RB3/PGM — Digital I/O / low-voltage ICSP programming |
| 引脚 23 | RB4 — Digital I/O |
| 引脚 24 | RB5 — Digital I/O |
| 引脚 25 | RB6/PGC — Digital I/O / ICSP clock |
| 引脚 26 | RB7/PGD — Digital I/O / ICSP data |
| 引脚 27 | VSS — Ground reference (second VSS pin) |
| 引脚 28 | VDD — Positive supply voltage (second VDD pin) |
典型应用
PIC16F76-I/SO 适用于 6 应用s: Industrial Automation Controller, HVAC and Appliance Control Board, Sensor Signal Conditioning Front-End, Low-End Data Logger, Simple Closed-Loop PID Control, Educational and Training Embedded Platform.
Industrial Automation Controller
The PIC16F76-I/SO fits industrial automation controllers by combining a deterministic 20 MHz PIC RISC core with the PIC16F7x peripheral set needed for sensor interfacing and actuator drive. Its 5-channel 8-bit ADC reads 0-5 V analog signals from temperature, pressure, and flow transducers directly without external signal conditioning, while the 2 CCP/PWM modules generate the 1-25 kHz PWM outputs commonly required to drive DC motors, solenoids, and triac-gated AC loads. The 22 digital I/O pins handle discrete inputs from limit switches and pushbuttons and drive relays, optocouplers, and 7-segment displays with software-debounced firmware. The MSSP supports SPI to digital potentiometers and I2C to EEPROM and RTC chips, and the USART handles RS-232 or RS-485 communication with PLCs, HMIs, and supervisory SCADA nodes. The industrial -40C to +85C temperature grade and 2.0-5.5 V supply range tolerate harsh factory floor conditions.
推荐
HVAC and Appliance Control Board
The PIC16F76-I/SO suits HVAC and appliance control boards because it integrates the analog, timing, and communication peripherals that white-goods and climate controllers require. The 8-bit ADC samples thermistor or RTD inputs to measure evaporator, condenser, and ambient temperatures, and the CCP/PWM outputs drive variable-speed blower fans, compressor inverter stages, and expansion valves with closed-loop PID control implemented in firmware. The MSSP operating in I2C mode reads indoor air-quality sensors and EEPROM-backed user settings, while the USART connects to wall thermostats or wireless modules. The 14 KB of Flash holds complete state-machine control logic plus user-interface code, and the 256 bytes of EEPROM retain last-mode, setpoint, and fault-log values across power cycles. The wide 2.0-5.5 V supply tolerates rectified 24 VAC transformer rails common in HVAC systems.
推荐
Sensor Signal Conditioning Front-End
The PIC16F76-I/SO is a good fit as a sensor signal-conditioning front-end for low-bandwidth analog and digital sensors that need local preprocessing before forwarding data to a host. Its 5-channel 8-bit ADC reads 0-5 V outputs from resistive bridge sensors, LDRs, and thermistors, while the MSSP in SPI mode connects to digital accelerometers, gyroscopes, or 24-bit sigma-delta ADCs that demand higher resolution than the on-chip converter. The 14 KB Flash accommodates linearization lookup tables, moving-average filters, and piecewise calibration routines, and the 368 bytes of RAM store multiple sensor channels between transmission bursts. The 20 MHz CPU executes one instruction per 200 ns cycle, which is more than enough to oversample, filter, and packetize sensor data at kilohertz rates. The 28-pin SOIC (SO) wide-body package is hand-solderable and easy to prototype on perforated board.
推荐
Low-End Data Logger
The PIC16F76-I/SO works as the core of a low-end data logger where 14 KB of Flash is enough to hold file-system wear-leveling and timestamp routines, and 368 bytes of RAM buffers the current record before flushing to external storage. The MSSP in SPI mode writes data blocks to an SD card or serial Flash, while a separate I2C line reads a real-time clock chip for timestamping each sample. The 8-bit ADC with 5 channels records temperature, humidity, voltage, and current at intervals programmed by the user, and the USART streams live readings to a PC for visualization. The brown-out reset and watchdog timer protect the device in unattended deployments, and the 256 bytes of EEPROM store configuration parameters such as sample rate, channel enable mask, and calibration coefficients that survive power loss.
推荐
Simple Closed-Loop PID Control
The PIC16F76-I/SO is well suited to simple closed-loop PID controllers for motor speed, temperature, flow, and position systems where the 8-bit ADC and dual CCP/PWM peripherals form a complete analog-input/PWM-output loop. The 20 MHz CPU executes PID update rates above 1 kHz with the classic PIC instruction set, while 368 bytes of RAM comfortably hold setpoint, process variable, error, integral, and derivative terms plus runtime state. The MSSP in SPI or I2C mode connects to digital feedback encoders or external DACs, and the USART reports loop telemetry to a host controller. The brown-out reset protects the loop from low-voltage glitches, and the watchdog timer recovers from firmware lockups that could drive an actuator to a hazardous state. Industrial temperature grade allows outdoor or cabinet-mounted operation.
推荐
Educational and Training Embedded Platform
The PIC16F76-I/SO serves as an educational and training embedded platform because of its simple 35-instruction PIC16 mid-range architecture, robust peripheral set, and a wide ecosystem of Microchip development tools, application notes, and student textbooks. The 14 KB Flash holds complete example projects including ADC sampling, PWM motor control, SPI EEPROM access, I2C sensor reading, and USART serial communication, while 368 bytes of RAM supports introductory data-structure exercises. The ICSP and ICD interfaces let students program and debug the device directly from MPLAB X without removing the chip from the board, and the 28-pin SOIC wide-body package is hand-solderable for laboratory kits. The 2.0-5.5 V supply is forgiving of USB-powered or battery-powered student workstations, and the industrial temperature grade supports outdoor robotics projects.
推荐
推荐产品汇总
工程参考数据： PIC16F76-I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16F73-I/SO | PIC16F876A-I/SO | PIC16F76-I/SO |
|---|---|---|---|---|
| Package | 28-pin SOIC (SO) | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory (Flash) | 14 KB | 7 KB | 14 KB | 14 KB |
| RAM | 368 bytes | 192 bytes | 368 bytes | 368 bytes |
| EEPROM | 256 bytes | 0 bytes (none) | 256 bytes | 256 bytes |
| Maximum CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC Resolution / Channels | 8-bit / 5 channels | 8-bit / 5 channels | 10-bit / 8 channels | 8-bit / 5 channels |
| CCP/PWM Modules | 2 | 2 | 2 | 2 |
| Serial Interfaces | MSSP (SPI/I2C) + USART | MSSP (SPI/I2C) + USART | MSSP (SPI/I2C) + USART | MSSP (SPI/I2C) + USART |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
关键差异点
- EEPROM on-chip for non-volatile parameter storage （对比 PIC16F73-I/SO)
- Upgrade path to 10-bit ADC without PCB changes （对比 PIC16F876A-I/SO)
- Industrial temperature grade with wide supply range （对比 PIC16F73-I/SO)
设计说明
Place a 0.1 uF decoupling capacitor within 5 mm of each VDD pin (pins 18 and 28) and a bulk capacitor of at least 10 uF on the VDD/VSS rails to suppress switching transients from the internal clock and I/O transitions. For ADC applications, add a 10 uF bulk plus 0.1 uF ceramic on the AVCC/AVSS pair to keep analog references clean. The PIC16F76-I/SO draws up to approximately 25 mA active at 20 MHz and 5 V and falls below 5 uA in sleep mode with the watchdog disabled.
Route the OSC1/OSC2 crystal traces as short and symmetric as possible with a ground guard ring if the part runs from a high-frequency external crystal, since trace capacitance detunes the load capacitors. Keep the MCLR reset trace short and place its pull-up resistor close to the pin. Analog traces (AN0-AN4) should be routed away from digital switching lines and the crystal to prevent ADC noise coupling; the VREF+ pin must be tied to a low-impedance clean source when ADC accuracy is critical.
Do not confuse the 28-pin SOIC wide-body (SO, 300-mil) with the 28-pin SSOP (SS) or 28-pin QFN (ML); only the SO variant carries the -I/SO suffix. When migrating from PIC16F73 firmware, recompile for the smaller 7 KB Flash map and 192 byte RAM layout, and recheck the EEPROM usage because the PIC16F73 has no on-chip EEPROM. In-circuit serial programming (ICSP) requires the RB6/PGC and RB7/PGD pins to be reachable; do not load these with heavy capacitance that slows the programming clock edge.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C denoted by the -I suffix.
