PIC16F871T-I/L - 8-bit 20MHz 3.5KB Flash MCU | Microchip | PLCC-44
Артикул: PIC16F871T-I/L ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $6.05 | $6,05 |
| 10 | $5.44 | $54,40 |
| 100 | $4.81 | $481,00 |
| 500 | $4.25 | $2.125,00 |
| 1.000 | $3.78 | $3.780,00 |
PIC16F871T-I/L Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), non-volatile data memory (EEPROM), and configurable I/O peripherals on a single IC. Within the broader taxonomy, the PIC16F871 belongs to the 8-bit PIC16 mid-range family, which sits under the RISC microcontroller hierarchy, the broader embedded processor category, and ultimately the semiconductor device family. This class of MCUs is widely used for deterministic, low-power embedded control in industrial, consumer, and automotive subsystems where predictable real-time behavior outweighs raw computational throughput.
Key features include 8 channels of 10-bit Analog-to-Digital Conversion (ADC), a USART module for asynchronous serial communication, an MSSP module supporting both SPI and I2C, and 64 bytes of self-programmable EEPROM. The device operates from 4.0V to 5.5V across an industrial -40C to +85C temperature range and supports in-circuit serial programming (ICSP) plus in-circuit debugging (ICD), enabling rapid prototyping and field updates via Microchip's MPLAB ecosystem.
The PIC16F871T-I/L uses Microchip's enhanced mid-range 14-bit instruction architecture with a Harvard-style bus that separates program and data memory, yielding deterministic instruction timing. Built on low-power CMOS FLASH process technology, the device supports multiple oscillator modes including RC, XT, HS, and LP, with nanoWatt-style power management features. The integrated brown-out reset (BOR), watchdog timer (WDT), and programmable code protection enhance reliability in unattended industrial installations.
Typical applications include industrial control systems, sensor interface boards, motor control front-ends, instrumentation data acquisition, building automation nodes, and low-cost consumer embedded devices. The wide I/O count also suits HVAC thermostats, security panels, and small appliances where multiple relays, keypads, and displays must be driven simultaneously.
Designers should budget oscillator margin (HS mode crystals need load capacitance matching) and ensure decoupling capacitor placement adheres to Microchip's recommended layout, with separate analog (AVDD) and digital (VDD) rails when using the ADC.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Аналоги без доработки для PIC16F871T-I/L — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC16F871T-I/L (тот же форм-фактор и посадочное место) — отличается по Core Architecture, I/O Pins, Package, Instruction Execution Time, Operating Temperature.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16F871-I/L
✅ Прямая замена✓ В наличии
$2.75 / шт.
Открыть даташит →PIC16F871-E/L
✅ Прямая замена✓ В наличии
$5.2 / шт.
Открыть даташит →PIC16F871T-E/L
✅ Прямая замена✓ В наличии
$5.85 / шт.
Открыть даташит →PIC16F871T-I/L Максимальные параметры и электрические характеристики
| Product Family | PIC16 mid-range 8-bit MCU |
| Core Architecture | PIC16 enhanced RISC, 14-bit instruction |
| Clock Frequency (Max) | 20 MHz |
| Instruction Cycle | 200 ns (single cycle, except branches) |
| Program Memory | 3.5 KB Flash (2K x 14 words) |
| RAM | 128 bytes |
| EEPROM Data Memory | 64 bytes |
| Supply Voltage (VDD) | 4.0 V to 5.5 V |
| I/O Pins | 33 (5 ports) |
| ADC | 10-bit, 8 channels |
| USART | 1 x Enhanced USART (AUSART) |
| MSSP | 1 (SPI / I2C master-slave) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Рабочая температура | -40 C to +85 C (Industrial) |
| Корпус | 44-pin PLCC (L) - J-Lead, surface mount |
| Статус RoHS | Compliant |
| Programming/Debug | ICSP + ICD via MPLAB |
Конфигурация выводов PIC16F871T-I/L
| Контакт 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Контакт 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Контакт 3 | RA2/AN2/VREF- — PORTA bit 2 / Analog input channel 2 / ADC negative reference |
| Контакт 4 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input channel 3 / ADC positive reference |
| Контакт 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Контакт 6 | RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI slave select |
| Контакт 7 | RE0/RD/AN5 — PORTE bit 0 / Parallel port read / Analog input channel 5 |
| Контакт 8 | RE1/WR/AN6 — PORTE bit 1 / Parallel port write / Analog input channel 6 |
| Контакт 9 | RE2/CS/AN7 — PORTE bit 2 / Parallel port chip select / Analog input channel 7 |
| Контакт 10 | VDD — Positive digital supply (4.0V to 5.5V) |
| Контакт 11 | VSS — Digital ground |
| Контакт 12 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Контакт 13 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Контакт 14 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Контакт 15 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 output |
| Контакт 16 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Контакт 17 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Контакт 18 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Контакт 19 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Контакт 20 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Контакт 21 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Контакт 22 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Контакт 23 | RC5/SDO — PORTC bit 5 / SPI data out |
| Контакт 24 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Контакт 25 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Контакт 26 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Контакт 27 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Контакт 28 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Контакт 29 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Контакт 30 | AVSS — Analog ground (tie to VSS) |
| Контакт 31 | AVDD — Analog positive supply (tie to VDD) |
| Контакт 32 | RB0/INT — PORTB bit 0 / External interrupt input |
| Контакт 33 | RB1 — PORTB bit 1 |
| Контакт 34 | RB2 — PORTB bit 2 |
| Контакт 35 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| Контакт 36 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Контакт 37 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Контакт 38 | RB6/PGC — PORTB bit 6 / ICSP clock / ICD clock |
| Контакт 39 | RB7/PGD — PORTB bit 7 / ICSP data / ICD data |
| Контакт 40 | MCLR/VPP — Master clear reset / Programming voltage input |
| Контакт 41 | NC — Not connected (per datasheet - reserved) |
| Контакт 42 | NC — Not connected (per datasheet - reserved) |
| Контакт 43 | NC — Not connected (per datasheet - reserved) |
| Контакт 44 | NC — Not connected (per datasheet - reserved) |
Типичное применение
PIC16F871T-I/L подходит для 6 применениеs: Industrial Sensor Interface & Data Acquisition, HVAC Thermostat & Building Automation Controller, Small Appliance Motor Control (PWM/PFC Front-End), Security & Alarm Panel Controller, Low-Cost Consumer Embedded Device Control, Instrumentation & Measurement Front-End.
Industrial Sensor Interface & Data Acquisition
The PIC16F871T-I/L fits industrial sensor interface boards because its 8-channel 10-bit ADC multiplexes up to eight analog sensors (temperature, pressure, humidity) at conversion rates up to ~50 ksps per the Microchip datasheet. Its 33 digital I/O lines drive status LEDs, keypad scanning, and relay output banks without external mux. The -40C to +85C industrial temperature range handles factory-floor thermal stress, while the 4.0-5.5 V supply aligns with standard 5 V transducer rails. Using the integrated MSSP SPI/I2C bus, the MCU also acts as a sensor hub forwarding digital data to a host controller. Compared with discrete ADC-plus-MCU designs, this single-chip integration reduces BOM cost by ~30% and PCB area by ~40%.
Рекомендуется
HVAC Thermostat & Building Automation Controller
The PIC16F871T-I/L is an excellent fit for HVAC thermostat and building-automation nodes because its 8-channel 10-bit ADC reads multiple thermistor inputs (room, supply-air, return-air) while the USART module links to a building management system (BMS) over RS-485. Per the Microchip datasheet, the CCP modules generate PWM outputs for variable-speed fan control, and the 64-byte EEPROM stores user setpoints through power cycles. The 200 ns deterministic instruction cycle ensures predictable PID loop timing at 100 ms sample intervals, critical for thermal comfort and energy efficiency. With 33 I/O, the same MCU also drives the LCD display and keypad without external logic.
Рекомендуется
Small Appliance Motor Control (PWM/PFC Front-End)
The PIC16F871T-I/L fits small-appliance motor-control front-ends such as blender speed controls, ceiling-fan regulators, and washing-machine pumps because its two CCP modules deliver complementary PWM outputs to MOSFET driver stages at switching frequencies up to ~20 kHz. The 10-bit ADC samples motor back-EMF or current shunt for closed-loop regulation within the 200 ns instruction cycle. Per the Microchip datasheet, the brown-out reset (BOR) and watchdog timer (WDT) protect against supply sag and code runaway, critical for unattended appliances. The PLCC-44 footprint offers robust mechanical soldering for high-vibration appliance environments.
Рекомендуется
Security & Alarm Panel Controller
The PIC16F871T-I/L is well suited as the main controller in residential or light-commercial security panels because 33 I/O lines scan up to 16 zone inputs, drive 8 siren/relay outputs, and interface with keypads and LCDs without external mux ICs. Per the Microchip PIC16F871 datasheet, the USART links to a central monitoring station via dialer or GSM modem, while the EEPROM retains user codes and event logs through power loss. The industrial -40C to +85C temperature range ensures operation in unheated closets or attic spaces, and the integrated ICD debug port accelerates field firmware updates during installation.
Рекомендуется
Low-Cost Consumer Embedded Device Control
The PIC16F871T-I/L targets low-cost consumer embedded products like coffee makers, rice cookers, and washing-machine user-interface boards because its 3.5 KB Flash holds complete application firmware for most user-interface tasks and its 33 I/O scan matrix keypads and drive 7-segment or character LCDs directly. Per the Microchip datasheet, the 64-byte EEPROM stores user preferences (brew strength, timer presets) across power cycles. The PLCC-44 package provides robust through-hole-style mechanical reliability for hand-soldered prototype and small-batch production at the $6.05 unit-price point.
Рекомендуется
Instrumentation & Measurement Front-End
The PIC16F871T-I/L is a good fit for low-cost bench instrumentation (digital multimeters, panel meters, lab data loggers) because its 10-bit ADC digitizes voltage/current/resistance readings with adequate accuracy for entry-level instruments, and the USART streams data to a PC at 9600-115200 baud for logging. Per the Microchip datasheet, the 8-channel ADC multiplexes multiple measurement ranges via analog switches, while the integrated EEPROM stores calibration constants. The PLCC-44 package fits legacy through-hole instrument chassis where mechanical robustness matters more than PCB density.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16F871T-I/L — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16F871-I/L | PIC16F871-E/L | PIC16F871T-E/L | PIC16F871T-I/PT | PIC16F871-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin PLCC (L) | 44-pin PLCC (L) - same | 44-pin PLCC (L) - same | 44-pin PLCC (L) - same | 44-pin TQFP (PT) - different footprint | 44-pin TQFP (PT) - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Clock Speed (Max) | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| Packaging Carrier | Tape & Reel | Tube | Tube | Tape & Reel | Tape & Reel | Tube |
Ключевые отличия
- Industrial temperature grade (-40C to +85C) at industrial pricing (против PIC16F871-E/L)
- Tape & Reel carrier for high-volume automated assembly (против PIC16F871-I/L (Tube))
- PLCC-44 package for legacy mechanical compatibility (против PIC16F871T-I/PT (TQFP-44))
Заметки по проектированию
Decouple the PIC16F871T-I/L VDD pin with a 100 nF ceramic capacitor placed within 5 mm of the IC pin, and add a bulk 10 uF tantalum or aluminum electrolytic capacitor near the supply input. For ADC accuracy, separate AVDD/AVSS from VDD/VSS using ferrite beads or a 10 ohm resistor, and decouple AVDD with its own 100 nF capacitor. This layout follows Microchip's PIC16F871 datasheet Section 14 (DC Characteristics) recommendations and prevents digital switching noise from coupling into the analog reference.
Do not leave the MCLR pin floating - either tie it to VDD through a 10 kohm pull-up resistor with a 100 nF capacitor to ground for brown-out protection, or configure it as a digital input via the configuration register. Floating MCLR is a common cause of unexplained resets. Also, configure the unused PORT pins as outputs and tie them to ground to minimize current consumption in sleep mode per the PIC16F871 datasheet Section 10 (Power-Managed Modes).
When using HS (high-speed) oscillator mode above 8 MHz, place the crystal or resonator within 10 mm of the OSC1/OSC2 pins and route the oscillator traces over a continuous ground plane to minimize EMI. The PIC16F871 datasheet specifies load capacitance values for each crystal frequency range (e.g., 15-33 pF for 20 MHz). Match the load capacitors to the crystal's rated CL per the manufacturer's datasheet, otherwise startup failures or frequency drift will occur.
Информация о соответствии
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the PIC16F871 family is targeted at industrial/consumer, not automotive. Lead-free (Pb-free) reflow profile per JEDEC J-STD-020.
