PIC16LF871-I/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip
Артикул: PIC16LF871-I/P ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $4.77 | $4,77 |
| 10 | $4.31 | $43,10 |
| 100 | $3.86 | $386,00 |
| 500 | $3.49 | $1.745,00 |
| 1.000 | $3.12 | $3.120,00 |
PIC16LF871-I/P Обзор
What is a PIC16 microcontroller? The PIC16 family is Microchip's mid-range 8-bit RISC microcontroller line, sitting between the baseline PIC10/PIC12/PIC16F5x family and the high-performance PIC18/PIC24 families. The mid-range architecture provides 14-bit instruction words, a hardware stack, peripheral-rich I/O, and standardized peripherals (timers, ADC, USART) that have made PIC16 the workhorse MCU for industrial control, consumer appliances, and embedded learning kits for decades.
Key features of the PIC16LF871 include 33 digital I/O pins, a 10-bit ADC with up to 8 input channels, two 8-bit timers plus one 16-bit timer, a USART module for serial communication, an ICD (In-Circuit Debug) interface, and 64 bytes of EEPROM data memory. The part supports self-programming of its flash memory, enabling field firmware updates. The 35 single-word instruction set makes it approachable for engineers transitioning from PIC12/PIC16C5X designs.
From an architectural standpoint, the PIC16LF871 uses Harvard architecture with separate program and data buses, an 8-level hardware stack, and direct/indirect addressing modes. The 200 ns instruction execution at 20 MHz allows deterministic real-time control loops. Internal oscillator and watchdog options, combined with nanoWatt power management, allow sleep currents low enough for always-on sensor applications.
Typical applications include industrial control panels, appliance controls (washing machines, microwave ovens), HVAC thermostats, automotive body modules (non-safety), battery chargers, and educational embedded platforms. The PIC16LF871's combination of low voltage operation, generous I/O count, and proven toolchain (MPLAB X IDE, XC8 compiler) makes it a frequent choice for designs transitioning from legacy PIC16C7X silicon.
When designing with this part, ensure the ICSP/ICD programming header is accessible for production programming and field updates. The 40-pin PDIP package is convenient for prototype and through-hole assembly, but for volume production the TQFP-44 or QFN-44 variants of the same die are recommended to reduce board area and improve thermal performance.
Аналоги без доработки для PIC16LF871-I/P — 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 PIC16LF871-I/P (тот же форм-фактор и посадочное место) — отличается по ADC, Package, Timers, Mounting Type, I/O Pins.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16F871-I/P
✅ Прямая замена✓ В наличии
$3.3 / шт.
Открыть даташит →PIC16LF871-I/PT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16LF871-I/L
✅ Прямая замена✓ В наличии
$4.21 / шт.
Открыть даташит →PIC16LF871T-I/PT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16F884-I/P
✅ Прямая замена✓ В наличии
$2.62 / шт.
Открыть даташит →PIC16LF871-I/P Максимальные параметры и электрические характеристики
| Core | PIC16 8-bit RISC |
| Instruction Set | 35 single-word instructions, 14-bit word |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| EEPROM | 64 bytes |
| CPU Speed | 20 MHz (200 ns instruction cycle) |
| Supply Voltage (LF) | 2.0 V to 5.5 V |
| I/O Pins | 33 |
| ADC | 10-bit, up to 8 channels |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Communication | USART (SCI), I2C/SPI (SSP) |
| Корпус | 40-pin PDIP (DIP-40) |
| Рабочая температура | -40 C to +85 C (industrial, 'I') |
| In-Circuit Debug | ICD supported |
| Self-Programming | Yes (Flash) |
| Статус RoHS | Compliant |
Конфигурация выводов PIC16LF871-I/P
| Контакт 1 | MCLR/VPP — Reset input / programming voltage |
| Контакт 2 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| Контакт 3 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| Контакт 4 | RA2/AN2/VREF- — PORTA bit 2 / ADC input 2 / ADC VREF- |
| Контакт 5 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input 3 / ADC VREF+ |
| Контакт 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Контакт 7 | RA5/AN4/SS — PORTA bit 5 / ADC input 4 / SPI slave select |
| Контакт 8 | RE0/RD/AN5 — PORTE bit 0 / parallel-port RD / ADC input 5 |
| Контакт 9 | RE1/WR/AN6 — PORTE bit 1 / parallel-port WR / ADC input 6 |
| Контакт 10 | RE2/CS/AN7 — PORTE bit 2 / parallel-port CS / ADC input 7 |
| Контакт 11 | VDD — Positive supply |
| Контакт 12 | VSS — Ground |
| Контакт 13 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Контакт 14 | OSC2/CLKOUT — Crystal oscillator output |
| Контакт 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Контакт 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Контакт 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture/compare |
| Контакт 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Контакт 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port data bit 0 |
| Контакт 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port data bit 1 |
| Контакт 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port data bit 2 |
| Контакт 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port data bit 3 |
| Контакт 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Контакт 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Контакт 25 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Контакт 26 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Контакт 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port data bit 4 |
| Контакт 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port data bit 5 |
| Контакт 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port data bit 6 |
| Контакт 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port data bit 7 |
| Контакт 31 | VSS — Ground |
| Контакт 32 | VDD — Positive supply |
| Контакт 33 | RB0/INT — PORTB bit 0 / external interrupt |
| Контакт 34 | RB1 — PORTB bit 1 |
| Контакт 35 | RB2 — PORTB bit 2 |
| Контакт 36 | RB3/PGM — PORTB bit 3 / LVP programming |
| Контакт 37 | RB4 — PORTB bit 4 |
| Контакт 38 | RB5 — PORTB bit 5 |
| Контакт 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Контакт 40 | RB7/PGD — PORTB bit 7 / ICSP data |
Типичное применение
PIC16LF871-I/P подходит для 6 применениеs: Industrial Control Panel, Home Appliance Controller (washing machine, microwave), Battery-Powered Sensor Node, HVAC Thermostat, Educational / Hobbyist Embedded Platform, Automotive Body Module (non-safety).
Industrial Control Panel
The PIC16LF871-I/P fits industrial control panels thanks to its 33 digital I/O pins that interface directly with relay drivers, optocouplers, and 24 V signal-conditioning front ends while running from 3.3 V internal rails. The 10-bit ADC handles analog sensor inputs (temperature, pressure, current shunt) without external conversion. Its 2.0 V to 5.5 V supply range supports battery-backed RTC and brownout recovery designs in factories.
Рекомендуется
Home Appliance Controller (washing machine, microwave)
The PIC16LF871-I/P is a proven workhorse in washing machines, microwave ovens, and dishwashers where the 40-pin PDIP is easy to assemble and field-service. Its 35-instruction RISC core delivers deterministic real-time control of motors, valves, and display drivers, while the USART/SSP modules connect to user-interface boards and triac-fired heater controls. The industrial -40 C to +85 C rating covers appliance environments.
Рекомендуется
Battery-Powered Sensor Node
Battery-powered sensor nodes benefit from the PIC16LF871-I/P's extended 2.0 V to 5.5 V supply range, allowing direct operation from 2x AA alkaline (3 V nominal) without boost regulation. The nanoWatt sleep modes drop quiescent current into the microamp range, enabling multi-year coin-cell deployments. The 10-bit ADC captures battery voltage and sensor data, while the USART wakes periodically to transmit over a connected radio.
Рекомендуется
HVAC Thermostat
The PIC16LF871-I/P runs HVAC thermostats by reading 10-bit ADC temperature inputs from thermistor or analog sensor bridges, driving triac outputs for heating/cooling stages, and managing the LCD user interface. Its 64-byte EEPROM stores user schedules and calibration values across power cycles. The industrial temperature range ensures reliable operation in attics and equipment closets.
Рекомендуется
Educational / Hobbyist Embedded Platform
The PIC16LF871-I/P remains a staple on educational development boards and hobbyist platforms because its 40-pin PDIP drops into breadboards, its 35-instruction set is easy to teach, and free MPLAB X IDE plus XC8 compiler support it. Students learn timers, ADC, USART, and EEPROM basics on this part before migrating to PIC18 or dsPIC. Its low cost and broad availability make it ideal for university labs.
Рекомендуется
Automotive Body Module (non-safety)
In non-safety automotive body electronics (interior lighting, seat controllers, accessory modules) the PIC16LF871-I/P can interface with LIN slaves via its USART and drive MOSFETs through its I/O pins. The industrial -40 C to +85 C range covers cabin environments, and the 40-pin PDIP is convenient for low-volume accessory modules. For safety-critical ECUs, AEC-Q100-qualified PIC16F variants must be used instead.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16LF871-I/P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16F871-I/P | PIC16LF871-I/PT | PIC16LF871-I/L | PIC16F884-I/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-40 | PDIP-40 (same) | TQFP-44 (different footprint) | PLCC-44 (different footprint) | PDIP-40 (same) |
| Program Memory | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 7 KB Flash |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes |
| Supply Voltage | 2.0 V to 5.5 V | 4.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 4.0 V to 5.5 V |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 33 | 33 | 33 | 33 | 36 |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 14 channels |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Ключевые отличия
- Extended low-voltage operation down to 2.0 V (против PIC16F871-I/P)
- Same die and pinout in surface-mount packages (против PIC16LF871-I/PT (TQFP-44))
- 33 I/O pins and 8-channel 10-bit ADC in 40-pin PDIP (против PIC16F884-I/P)
Заметки по проектированию
Place a 100 nF decoupling capacitor between VDD (pin 11 and pin 32) and VSS (pin 12 and pin 31), routed with short traces to the package pins to suppress switching noise on the analog rails. Add a 10 uF bulk capacitor on the main VDD rail near the MCU. The PIC16LF871 has two VDD/VSS pairs; both must be decoupled to ensure stable operation during ADC conversions.
The MCLR pin (pin 1) must be pulled up to VDD through a resistor (typically 10 kohm) for normal operation. Leaving MCLR floating prevents the MCU from exiting reset. For ICSP programming, route the PGC (pin 39) and PGD (pin 40) signals directly to a programming header without series resistors that exceed 4.7 kohm, otherwise ICSP communication may fail.
When running from 3.3 V or below, confirm any peripherals used have 3.3 V-tolerant variants. The PIC16LF871's I/O pins are 5 V tolerant only when VDD is at 5 V; at 3.3 V supply the I/O pins output a maximum of VDD. For ADC accuracy, enable the ADC in the configuration bits and acquire at least 20 microseconds after channel switching to allow the sample capacitor to settle.
Информация о соответствии
RoHS-compliant per Microchip product page. Industrial -40 C to +85 C temperature range. Not AEC-Q100 qualified; not suitable for safety-critical automotive ECUs.
