PIC16F871T-E/L - 8-bit 20MHz Flash MCU, 44-PLCC | Microchip
Артикул: PIC16F871T-E/L ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $8.1 | $81,00 |
| 100 | $7.2 | $720,00 |
| 500 | $6.5 | $3.250,00 |
| 1.000 | $5.85 | $5.850,00 |
PIC16F871T-E/L Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral interfaces such as timers, ADC, communication ports, and GPIO. PIC microcontrollers use a Harvard RISC architecture that separates program and data buses, enabling single-cycle instruction fetch and deterministic timing. The PIC16F871 sits in Microchip's mid-range x14 family, hierarchically classified as: microcontroller -> 8-bit MCU -> PIC16 mid-range -> Flash MCU -> mixed-signal MCU with on-chip ADC.
Key features include 8 channels of 10-bit Analog-to-Digital conversion, a USART module for asynchronous/synchronous serial communication, an MSSP module supporting SPI and I2C (master/slave), a 16-bit capture/compare/PWM module, two 8-bit timers, a watchdog timer with dedicated on-chip RC oscillator, in-circuit serial programming (ICSP) via two pins, and nanoWatt technology for dynamic power management. The device operates from 4.0 V to 5.5 V with low-power sleep and idle modes suitable for battery-backed designs.
Architecturally, the PIC16F871 employs an enhanced mid-range core with a 14-bit wide program word and 8-bit data path. Its flash program memory supports self-programming under firmware control, allowing field updates without external programmers. The integrated 10-bit ADC with 8 input channels provides adequate resolution for sensor signal acquisition in industrial control loops. On-chip peripherals provide sub-microsecond timing precision and bus protocols.
Typical applications include industrial control and automation, HVAC sensor interfaces, motor control for small stepper/brushless DC drives, automotive body and interior electronics, instrumentation and metering, low-cost user-interface panels, and home appliance control boards. The wide operating temperature range supports automotive underhood and outdoor industrial deployments.
When designing with this MCU, ensure decoupling: place one 100 nF ceramic capacitor per power pin within 2 mm of the package, plus a bulk 10 uF tantalum at the regulator output. The MCLR reset pin requires a 10 kohm pull-up to VDD; do not leave it floating. For ICSP, dedicate dedicated pads for PGD/PGC so a debugger can be attached without board rework.
This page synthesizes distributor pricing, package-specific drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet, enabling faster BOM validation and second-source qualification for PIC16F871 designs.
Аналоги без доработки для PIC16F871T-E/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-E/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-I/L
✅ Прямая замена✓ В наличии
$3.78 / шт.
Открыть даташит →PIC16F871T-E/L Максимальные параметры и электрические характеристики
| Core Architecture | PIC16 mid-range 8-bit RISC (Harvard) |
| Program Memory Size | 3.5 KB (2K x 14) Flash |
| RAM Size | 128 bytes |
| EEPROM Size | 64 bytes |
| Maximum Clock Speed | 20 MHz |
| Instruction Execution Time | 200 ns at 20 MHz |
| Instruction Set Size | 35 single-word instructions |
| I/O Pins | 16 |
| Supply Voltage (VDD) | 4.0 V to 5.5 V |
| ADC | 10-bit, 8 channels |
| Timers | 1 x 16-bit, 2 x 8-bit |
| Communication Interfaces | USART, MSSP (SPI/I2C) |
| Корпус | 44-pin PLCC (J-lead), MO-047 |
| Рабочая температура | -40C to +125C (E = Extended) |
| ICSP / Debug | Yes (2-wire ICSP) |
| Power-Saving Modes | nanoWatt (Sleep, Idle, Watchdog off) |
| Lead-Free / RoHS | Yes |
Конфигурация выводов PIC16F871T-E/L
| Контакт 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage |
| Контакт 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Контакт 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Контакт 4 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Контакт 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input channel 3 / ADC VREF+ |
| Контакт 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Контакт 7 | RA5/AN4/SS — PORTA bit 5 / Analog input channel 4 / SPI Slave Select |
| Контакт 8 | AVSS — Analog ground |
| Контакт 9 | AVDD — Analog positive supply |
| Контакт 10 | VDD — Digital positive supply |
| Контакт 11 | VSS — Digital ground |
| Контакт 12 | OSC1/CLKIN — Oscillator input / external clock input |
| Контакт 13 | OSC2/CLKOUT — Oscillator 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 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Контакт 19 | RC5/SDO — PORTC bit 5 / SPI data out |
| Контакт 20 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Контакт 21 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Контакт 22 | RB0/INT — PORTB bit 0 / External interrupt |
| Контакт 23 | RB1 — PORTB bit 1 |
| Контакт 24 | RB2 — PORTB bit 2 |
| Контакт 25 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| Контакт 26 | RB4 — PORTB bit 4 |
| Контакт 27 | RB5 — PORTB bit 5 |
| Контакт 28 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Контакт 29 | RB7/PGD — PORTB bit 7 / ICSP data |
| Контакт 30 | NC — Not connected |
| Контакт 31 | NC — Not connected |
| Контакт 32 | NC — Not connected |
| Контакт 33 | NC — Not connected |
| Контакт 34 | RD0 — PORTD bit 0 |
| Контакт 35 | RD1 — PORTD bit 1 |
| Контакт 36 | RD2 — PORTD bit 2 |
| Контакт 37 | RD3 — PORTD bit 3 |
| Контакт 38 | RD4 — PORTD bit 4 |
| Контакт 39 | RD5 — PORTD bit 5 |
| Контакт 40 | RD6 — PORTD bit 6 |
| Контакт 41 | RD7 — PORTD bit 7 |
| Контакт 42 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input channel 5 |
| Контакт 43 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input channel 6 |
| Контакт 44 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input channel 7 |
Типичное применение
PIC16F871T-E/L подходит для 6 применениеs: Industrial Sensor Interface Board, HVAC Climate Control Module, Automotive Interior Lighting Controller, Small Stepper Motor Drive Controller, Home Appliance User Interface, Instrumentation and Metering Front-End.
Industrial Sensor Interface Board
The PIC16F871T-E/L's 8-channel 10-bit ADC makes it a strong fit for industrial sensor aggregation boards that read multiple analog transducers (temperature, pressure, level) and forward them over a serial link. Operating from 4.0-5.5 V, the MCU integrates cleanly with 5 V analog front-ends without level shifters. Its 128 B SRAM is sufficient for FIFO buffering of 10 Hz sensor streams, and the USART module drives RS-485 transceivers directly. At 20 MHz, the 200 ns instruction cycle closes ADC-threshold control loops well under 1 ms, fast enough for closed-loop HVAC and process control duty. Placed between the 5 V rail and a 4x20 LCD, the device runs the typical application firmware from datasheet 39614D unmodified. Designers benefit from ICSP for in-system calibration updates without removing the board from the panel.
Рекомендуется
HVAC Climate Control Module
The PIC16F871T-E/L targets HVAC wall thermostats and air-handler controllers that combine temperature/humidity sensing with relay/PWM outputs for fan and damper drives. Its nanoWatt sleep mode reduces quiescent current below 1 uA between sensor samples, enabling battery-backed operation during power loss. The 16-bit CCP module generates the PWM signals for variable-speed blower motors, while the 8-bit timer ticks the control loop. At 5 MIPS, the firmware can scan inputs, debounce buttons, drive an LCD, and run a PI controller concurrently. The Extended -40C to +125C temperature grade supports attic, rooftop, and outdoor air-handler installations. Typical designs use the MSSP (I2C) port to attach an EEPROM for setpoint storage and the USART for optional Wi-Fi module interconnect.
Рекомендуется
Automotive Interior Lighting Controller
Automotive interior and courtesy lighting uses the PIC16F871T-E/L to drive multiple LED strings with smooth PWM dimming while monitoring door-switch and ambient-light inputs. The Extended -40C to +125C grade is essential for cabin electronics that experience dashboard thermal extremes. The PIC16F871T-E/L's 16-bit CCP and 8-bit timer pair deliver 10-bit PWM resolution at 100 Hz, well below the flicker-fusion threshold for human vision. Its 16 GPIO pins comfortably accommodate 8 LED drivers plus 8 input buttons or switches. The MSSP (SPI) port interfaces with an LED driver like the TLC5940 for higher channel counts, while the USART provides LIN-bus connectivity via an external transceiver. The 3.5 KB Flash is more than enough for chase-pattern firmware plus LIN diagnostics.
Рекомендуется
Small Stepper Motor Drive Controller
Stepper and brushless-DC motor controllers in printers, copiers, and small appliances use the PIC16F871T-E/L to generate the commutation and acceleration profile while monitoring end-point feedback. With 5 MIPS at 20 MHz, the firmware can execute microstepping commutation tables at rates above 10 kHz without timing jitter, holding torque ripple low. The 16-bit CCP timer produces the precise step pulse train, while the MSSP (SPI) port attaches an external stepper driver such as the DRV8834 for current control. The MCU's 8 ADC channels read back current sense, position, and temperature for closed-loop control. The Extended temperature grade supports motor-mounted PCBs. Typical design follows the datasheet 39614D CCP+PWM reference firmware with custom acceleration ramps in C using the XC8 compiler.
Рекомендуется
Home Appliance User Interface
Washing machines, dishwashers, and microwave ovens use the PIC16F871T-E/L for keypad scanning, LCD driving, and rotary-encoder input while sharing the bus with a host controller. The 16 GPIO pins comfortably accommodate 4x4 key matrices plus an LCD enable and buzzer. Its nanoWatt sleep mode drops standby power below 1 uA when the appliance is off, meeting EU eco-design standby limits. Operating from 5 V, the MCU pairs directly with character LCD modules without level translation. The MSSP (SPI or I2C) port attaches a host microcontroller or BLE module for app connectivity. The Extended temperature grade supports kitchen environments where internal temperatures exceed 70C. Firmware follows the datasheet 39614D GPIO debounce and interrupt-on-change examples.
Рекомендуется
Instrumentation and Metering Front-End
Digital panel meters, energy monitors, and laboratory instrumentation use the PIC16F871T-E/L to acquire analog signals and display them on local readouts. The 8-channel 10-bit ADC supports multi-range voltmeters, current shunts, and thermocouple inputs with cold-junction compensation. At 20 MHz, ADC conversion completes in approximately 30 us, allowing up to 30 kSamples/s aggregate throughput for transient capture. The 16-bit CCP module generates precision timing for frequency counters, and the USART streams measurement logs to a host PC. The 64-byte EEPROM stores calibration constants that the firmware applies to raw ADC readings. The 44-pin PLCC package is socket-friendly for field recalibration, a feature valued in legacy test equipment.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16F871T-E/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-I/L |
|---|---|---|---|---|
| Package | 44-pin PLCC (J-lead) | 44-pin PLCC - same | 44-pin PLCC - same | 44-pin PLCC - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | PIC16 mid-range 8-bit | PIC16 mid-range 8-bit | PIC16 mid-range 8-bit | PIC16 mid-range 8-bit |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash / RAM / EEPROM | 3.5 KB / 128 B / 64 B | 3.5 KB / 128 B / 64 B | 3.5 KB / 128 B / 64 B | 3.5 KB / 128 B / 64 B |
| I/O Pins | 16 | 16 | 16 | 16 |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C |
| Packaging Format | Tape & Reel (T) | Tube | Tube | Tape & Reel |
| Lifecycle Status | Active | Active | Active | Active |
| Approx. Unit Price (qty 1, USD) | 8.95 | 8.50 | 9.20 | 8.10 |
Ключевые отличия
- Tape-and-reel packaging with extended temperature grade for SMT production (против PIC16F871-I/L)
- 10-bit ADC with 8 input channels integrated (против PIC16F870)
- 44-pin PLCC package for socketed field-serviceable designs (против PIC16F873)
Заметки по проектированию
Decoupling is mandatory. Place a 100 nF ceramic capacitor (X7R) within 2 mm of every VDD/VSS pair (PLCC pins 10/11 and the analog supply pins 9/8). Add a bulk 10 uF tantalum or low-ESR ceramic at the regulator output. Per Microchip datasheet 39614D, the analog supply AVDD must not exceed VDD by more than 0.3 V; otherwise the ADC reference can be corrupted and ESD clamps stressed. Keep analog and digital grounds joined at a single point near the MCU.
Do not leave MCLR floating - tie it to VDD through a 10 kohm pull-up and add a 100 nF cap to ground for noise immunity. The PGD/PGC pins (RB7/RB6) must be reachable by an ICSP probe; reserve a 2x3 pin header or test pads, and avoid loading them with more than 50 pF. For low-voltage programming, leave RB3/PGM unconnected or pulled low. Forgetting the MCLR pull-up is the #1 reason PIC MCUs fail to start in production boards.
Route the crystal traces (OSC1/OSC2) short, symmetric, and surrounded by a ground guard ring to minimize EMI pickup. Keep clock traces away from analog ADC inputs to avoid crosstalk. For high-noise environments, use a 4-layer PCB with a solid ground plane under the MCU. Estimated: for a 20 MHz fundamental crystal, traces longer than 5 mm can introduce 50-100 mV of overshoot; series-termination at the driver pin (typically 22 ohm) helps.
When the PIC16F871T-E/L drives the USART to a long cable or RS-485 bus, add a 100 ohm series resistor and an optional TVS diode at the connector. The MSSP (SPI) port can run up to several MHz; keep traces matched within 10 mm on SCK, SDO, and SDI to avoid sub-frame skew. The I2C bus requires pull-ups sized for the total capacitance: estimated 2.2 kohm for 400 kHz with under 100 pF bus length, and 4.7 kohm for 100 kHz.
The 44-pin PLCC package has a theta_JA of approximately 45-55 C/W on a 4-layer PCB with no dedicated thermal copper. Estimated: continuous 20 MHz operation at 5.5 V draws ~25 mA active (~140 mW), producing a 7-8 C rise above ambient - well within the -40C to +125C operating range. For sealed enclosures with no airflow, derate clock speed or add thermal copper to keep Tj below 100 C.
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; the Extended (-E-) temperature grade supports automotive interior use, but underhood applications require a Q1 variant or additional qualification testing. Lead-free (Pb-free) and halogen-free per Microchip material declaration.
