PIC16F871T-I/L - 8-bit 20MHz 3.5KB Flash MCU | Microchip | PLCC-44
Référence : PIC16F871T-I/L ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 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 Présentation
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.
Alternatives de remplacement direct pour PIC16F871T-I/L — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16F871T-I/L (même facteur de forme et même empreinte) — différant par Core Architecture, I/O Pins, Package, Instruction Execution Time, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F871-I/L
✅ Remplacement direct✓ En stock
$2.75 / unité
Voir la fiche technique →PIC16F871-E/L
✅ Remplacement direct✓ En stock
$5.2 / unité
Voir la fiche technique →PIC16F871T-E/L
✅ Remplacement direct✓ En stock
$5.85 / unité
Voir la fiche technique →PIC16F871T-I/L Valeurs maximales et caractéristiques électriques
| 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) |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| Boîtier | 44-pin PLCC (L) - J-Lead, surface mount |
| Statut RoHS | Compliant |
| Programming/Debug | ICSP + ICD via MPLAB |
Configuration des broches de PIC16F871T-I/L
| Broche 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Broche 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Broche 3 | RA2/AN2/VREF- — PORTA bit 2 / Analog input channel 2 / ADC negative reference |
| Broche 4 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input channel 3 / ADC positive reference |
| Broche 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 6 | RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI slave select |
| Broche 7 | RE0/RD/AN5 — PORTE bit 0 / Parallel port read / Analog input channel 5 |
| Broche 8 | RE1/WR/AN6 — PORTE bit 1 / Parallel port write / Analog input channel 6 |
| Broche 9 | RE2/CS/AN7 — PORTE bit 2 / Parallel port chip select / Analog input channel 7 |
| Broche 10 | VDD — Positive digital supply (4.0V to 5.5V) |
| Broche 11 | VSS — Digital ground |
| Broche 12 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Broche 13 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Broche 14 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Broche 15 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 output |
| Broche 16 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Broche 17 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Broche 18 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Broche 19 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Broche 20 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Broche 21 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Broche 22 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Broche 23 | RC5/SDO — PORTC bit 5 / SPI data out |
| Broche 24 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Broche 25 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Broche 26 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Broche 27 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Broche 28 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Broche 29 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Broche 30 | AVSS — Analog ground (tie to VSS) |
| Broche 31 | AVDD — Analog positive supply (tie to VDD) |
| Broche 32 | RB0/INT — PORTB bit 0 / External interrupt input |
| Broche 33 | RB1 — PORTB bit 1 |
| Broche 34 | RB2 — PORTB bit 2 |
| Broche 35 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| Broche 36 | RB4 — PORTB bit 4 (interrupt-on-change) |
| Broche 37 | RB5 — PORTB bit 5 (interrupt-on-change) |
| Broche 38 | RB6/PGC — PORTB bit 6 / ICSP clock / ICD clock |
| Broche 39 | RB7/PGD — PORTB bit 7 / ICSP data / ICD data |
| Broche 40 | MCLR/VPP — Master clear reset / Programming voltage input |
| Broche 41 | NC — Not connected (per datasheet - reserved) |
| Broche 42 | NC — Not connected (per datasheet - reserved) |
| Broche 43 | NC — Not connected (per datasheet - reserved) |
| Broche 44 | NC — Not connected (per datasheet - reserved) |
Applications typiques
PIC16F871T-I/L convient pour 6 applications: 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%.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16F871T-I/L — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Industrial temperature grade (-40C to +85C) at industrial pricing (vs PIC16F871-E/L)
- Tape & Reel carrier for high-volume automated assembly (vs PIC16F871-I/L (Tube))
- PLCC-44 package for legacy mechanical compatibility (vs PIC16F871T-I/PT (TQFP-44))
Notes de conception
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.
Informations de conformité
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.
