PIC16LF871-I/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip
N.º da peça: PIC16LF871-I/P ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para PIC16LF871-I/P — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16LF871-I/P (mesmo formato e footprint) — diferindo em ADC, Package, Timers, Mounting Type, I/O Pins.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F871-I/P
✅ Drop-In✓ Em estoque
$3.3 / unidade
Ver ficha técnica →PIC16LF871-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16LF871-I/L
✅ Drop-In✓ Em estoque
$4.21 / unidade
Ver ficha técnica →PIC16LF871T-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F884-I/P
✅ Drop-In✓ Em estoque
$2.62 / unidade
Ver ficha técnica →PIC16LF871-I/P Classificações máximas e características elétricas
| 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) |
| Encapsulamento | 40-pin PDIP (DIP-40) |
| Temperatura de operação | -40 C to +85 C (industrial, 'I') |
| In-Circuit Debug | ICD supported |
| Self-Programming | Yes (Flash) |
| Status RoHS | Compliant |
Configuração de pinos do PIC16LF871-I/P
| Pino 1 | MCLR/VPP — Reset input / programming voltage |
| Pino 2 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| Pino 4 | RA2/AN2/VREF- — PORTA bit 2 / ADC input 2 / ADC VREF- |
| Pino 5 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input 3 / ADC VREF+ |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 7 | RA5/AN4/SS — PORTA bit 5 / ADC input 4 / SPI slave select |
| Pino 8 | RE0/RD/AN5 — PORTE bit 0 / parallel-port RD / ADC input 5 |
| Pino 9 | RE1/WR/AN6 — PORTE bit 1 / parallel-port WR / ADC input 6 |
| Pino 10 | RE2/CS/AN7 — PORTE bit 2 / parallel-port CS / ADC input 7 |
| Pino 11 | VDD — Positive supply |
| Pino 12 | VSS — Ground |
| Pino 13 | OSC1/CLKIN — Crystal oscillator input / external clock |
| Pino 14 | OSC2/CLKOUT — Crystal oscillator output |
| Pino 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Pino 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture/compare |
| Pino 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port data bit 0 |
| Pino 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port data bit 1 |
| Pino 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port data bit 2 |
| Pino 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port data bit 3 |
| Pino 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 25 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Pino 26 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Pino 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port data bit 4 |
| Pino 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port data bit 5 |
| Pino 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port data bit 6 |
| Pino 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port data bit 7 |
| Pino 31 | VSS — Ground |
| Pino 32 | VDD — Positive supply |
| Pino 33 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 34 | RB1 — PORTB bit 1 |
| Pino 35 | RB2 — PORTB bit 2 |
| Pino 36 | RB3/PGM — PORTB bit 3 / LVP programming |
| Pino 37 | RB4 — PORTB bit 4 |
| Pino 38 | RB5 — PORTB bit 5 |
| Pino 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 40 | RB7/PGD — PORTB bit 7 / ICSP data |
Aplicações típicas
PIC16LF871-I/P é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LF871-I/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Extended low-voltage operation down to 2.0 V (vs PIC16F871-I/P)
- Same die and pinout in surface-mount packages (vs PIC16LF871-I/PT (TQFP-44))
- 33 I/O pins and 8-channel 10-bit ADC in 40-pin PDIP (vs PIC16F884-I/P)
Notas de projeto
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.
Informações de conformidade
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.
