PIC16F871-E/L - 8-Bit 20MHz 3.5KB Flash MCU, 44-PLCC | Microchip
MPN: PIC16F871-E/L ✓ فعالPIC16F871-E/L جائزہ
A mid-range PIC16 microcontroller is a class of 8-bit RISC MCU from Microchip using a 14-bit instruction word and 35 single-word instructions, designed for embedded control applications. The PIC16F871 belongs to the broader PIC16 family, which sits inside Microchip's PIC architecture taxonomy: PIC10/12/16 (8-bit) -> PIC -> Microcontroller -> Embedded IC -> Semiconductor. Mid-range PICs typically include nanoWatt Technology for power-managed sleep states, on-chip debug (ICD), and self-programming capability — and the PIC16F871 exemplifies all three.
Key features include the on-chip ICD for in-circuit debug without an expensive emulator, self-programming Flash allowing firmware field updates, nanoWatt power management with multiple low-power modes, and 33 digital I/O lines. The 8-channel 10-bit ADC can serve up to 8 analog sensors in a single MCU, while the USART/SCI supports RS-232/RS-485 communication for industrial networking. The 44-PLCC package provides a J-lead socket-mountable footprint for prototyping and field replacement.
The PIC16F871 architecture combines a Harvard bus with separate program and data paths, achieving deterministic 200 ns instruction execution and predictable interrupt latency. Peripherals are mapped into a linear data-memory space and share a vectored interrupt controller, simplifying firmware development for mixed-signal and motor-control designs.
Typical applications include industrial sensor interfaces, building-automation controllers, low-end motor control, automotive body electronics, security and alarm panels, HVAC fan/blower control, and battery chargers. Its 5V-tolerant design and extended temperature range make it well suited to both 24V industrial buses (post-regulation) and 12V automotive environments.
Designers should note the -E suffix denotes the Extended (industrial) temperature grade -40C to +125C, distinguishing it from the -I (Industrial, -40C to +85C) variants. For new designs, PIC16F1 mid-range enhanced successors such as PIC16F18877 may offer modern peripherals; however, the PIC16F871 remains a long-lifecycle part with mature toolchain support.
کے لیے ڈراپ اِن متبادل PIC16F871-E/L — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16F871-E/L (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Timers, Package, Core Architecture, Operating Temperature, Program Memory Size.
PIC16F871-I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F871T-I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F871-E/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F871-E/PT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F871-E/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F871-E/L زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16 (8-bit RISC, 14-bit instruction word) |
| Instruction Set Size | 35 single-word instructions |
| Maximum CPU Frequency | 20 MHz |
| Instruction Execution Time | 200 ns (at 20 MHz) |
| Flash Program Memory | 3.5 KB (2K x 14) |
| RAM Data Memory | 128 bytes |
| EEPROM Data Memory | 64 bytes |
| ADC | 10-bit, 8 channels |
| I/O Pins | 33 (maximum) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | Yes (CCP module) |
| Communication | USART/SCI |
| Self-Programming | Yes (Flash boot block) |
| In-Circuit Debug | Yes (ICD) |
| Power-Saving Technology | nanoWatt Technology |
| سپلائی وولٹیج | 4 V to 5.5 V |
| آپریٹنگ درجہ حرارت رینج | -40 C to +125 C (Extended grade) |
| پیکیج | 44-pin PLCC (J-Lead, 16.59 x 16.59 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount (Socketable PLCC) |
| RoHS اسٹیٹس | Compliant |
PIC16F871-E/L پن کنفیگریشن
| پن 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage |
| پن 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| پن 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| پن 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| پن 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / VREF+ |
| پن 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / Slave Select |
| پن 8 | RE0/RD/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| پن 9 | RE1/WR/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| پن 10 | RE2/CS/AN7 — PORTE bit 2 / Chip Select / Analog input 7 |
| پن 11 | VDD — Positive supply voltage (+5V) |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKIN — Oscillator input / External clock input |
| پن 14 | OSC2/CLKOUT — Oscillator output / Clock output |
| پن 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| پن 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پن 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| پن 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پن 19 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| پن 20 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| پن 21 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| پن 22 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| پن 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| پن 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| پن 27 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| پن 28 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| پن 29 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| پن 30 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply voltage (+5V) |
| پن 33 | RB0/INT — PORTB bit 0 / External interrupt |
| پن 34 | RB1 — PORTB bit 1 |
| پن 35 | RB2 — PORTB bit 2 |
| پن 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| پن 37 | RB4 — PORTB bit 4 |
| پن 38 | RB5 — PORTB bit 5 |
| پن 39 | RB6/PGC — PORTB bit 6 / ICD clock / ICSP clock |
| پن 40 | RB7/PGD — PORTB bit 7 / ICD data / ICSP data |
| پن 41 | NC — Not connected (per datasheet) |
| پن 42 | NC — Not connected (per datasheet) |
| پن 43 | NC — Not connected (per datasheet) |
| پن 44 | NC — Not connected (per datasheet) |
عام استعمالات
PIC16F871-E/L کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Interface & Data Acquisition, Building Automation & HVAC Control, Automotive Body Electronics, Security & Alarm Panel Controller, Battery Charger & Power Management, Low-Volume Industrial Serial Bridge.
Industrial Sensor Interface & Data Acquisition
The PIC16F871-E/L is well suited for industrial sensor-interface and data-acquisition nodes thanks to its 8-channel 10-bit ADC, USART, and Extended -40 C to +125 C temperature grade. The 8 ADC channels allow direct connection of up to 8 analog sensors (temperature, pressure, flow, level) to a single MCU, while the 20 MHz core runs the conversion-completion loop with deterministic 200 ns instruction timing for stable sampling rates. The USART supports RS-232/RS-485 networking for distributed industrial nodes back to a PLC. With 64 bytes of EEPROM available for calibration constants and 128 bytes RAM for buffering, the PIC16F871-E/L fits typical 4-20 mA loop sensor conditioner designs.
تجویز کردہ
Building Automation & HVAC Control
The PIC16F871-E/L serves as a cost-effective controller for building-automation and HVAC subsystems (fan speed, damper control, thermostat input, alarm I/O). Its nanoWatt Technology supports deep-sleep current below 1 uA, enabling battery-backed or energy-harvesting HVAC nodes that spend most of their life in sleep mode. The PWM module (CCP) drives TRIAC phase-angle control or DC fan motor speed via MOSFET gate signals, while the USART links to a central building-management system over RS-485. The 44-PLCC socketable package eases field service of installed units — a key requirement in commercial-building service contracts.
تجویز کردہ
Automotive Body Electronics
The PIC16F871-E/L is a fit for non-safety automotive body-electronics modules such as interior lighting, mirror control, seat positioner, HVAC blower, and accessory multiplexers, given its -40 C to +125 C Extended operating range and 5 V supply tolerance on 12 V automotive rails (post-regulation). The USART supports LIN-bus slave implementations for body-control networks, while the ADC reads multiplexed sensor inputs (potentiometers, switches). The Flash self-programming supports field firmware updates via OBD-II or service-tool routines, and the ICD simplifies bring-up of automotive prototypes. Note: this part is not AEC-Q100 qualified — for safety-critical or AEC-Q100 applications, select a PIC16/18 automotive-grade variant.
تجویز کردہ
Security & Alarm Panel Controller
Security and intrusion-alarm panels benefit from the PIC16F871-E/L's 33 I/O pins for zone-input scanning and siren/relay output driving, plus its 64-byte EEPROM for storing installer-configured zone maps. The 10-bit ADC supports analog-zone supervision (end-of-line resistor sensing, glass-break detector interfaces), and the USART links to a central monitoring station via dialer or IP gateway. Extended -40 C to +125 C operation suits unheated garages, basements, and outdoor panel installations. The ICD-enabled debug workflow accelerates firmware bring-up for new sensor protocols (Z-Wave, Zigbee bridges).
تجویز کردہ
Battery Charger & Power Management
The PIC16F871-E/L operates as the control MCU in small to mid-size battery chargers for cordless tools, e-bikes, robotics, and uninterruptible power supplies. Its ADC measures battery voltage, charge current (via shunt), and temperature (via NTC), while the PWM (CCP module) drives a buck or flyback converter's control loop. The Flash self-programming allows chemistry-specific charging profiles (Li-ion, NiMH, lead-acid) to be field-updated. With 64-byte EEPROM available for storing learned battery parameters, and -40 C to +125 C operation covering outdoor/automotive charging environments, the part is well matched to commercial charging systems up to several amps.
تجویز کردہ
Low-Volume Industrial Serial Bridge
The PIC16F871-E/L is widely used as a protocol-conversion serial bridge between legacy RS-232/RS-485 industrial equipment and modern USB or Ethernet hosts. The USART/SCI peripheral directly drives RS-232 level-shifters or RS-485 transceivers, while firmware implements Modbus RTU/ASCII master/slave, DF1, or custom protocols. With 3.5 KB Flash, the part can host multi-protocol stacks; 128 bytes RAM buffers short telegrams; 64 bytes EEPROM stores node address, baud rate, and parity configuration. The Extended temperature grade supports cabinet-free installations in factories, and the 44-PLCC socketed package allows field swap-out when protocols evolve.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16F871-E/L — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F871-I/L | PIC16F871T-I/L | PIC16F871-E/P | PIC16F871-E/PT | PIC16F871-E/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (J-Lead) | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same | 40-PDIP - different | 44-TQFP - different | 28-SOIC - different |
| Core | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 8-bit RISC | PIC16 8-bit RISC |
| Max CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash 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 |
| EEPROM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes |
| Operating Temperature | -40 to +125 C (Extended) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +125 C (Extended) | -40 to +125 C (Extended) | -40 to +125 C (Extended) |
| Pin Count | 44 | 44 | 44 | 40 | 44 | 28 |
اہم امتیازی خصوصیات
- Extended temperature grade (-40 to +125 C) in PLCC-44 socketable package (بمقابلہPIC16F871-I/L)
- On-chip ICD eliminates external emulator cost (بمقابلہLegacy PIC16C7X family (no Flash, no ICD))
- Self-programming Flash supports field firmware updates (بمقابلہOTP (one-time-programmable) PIC16C parts)
ڈیزائن نوٹس
Estimated: At 20 MHz CPU clock and 5 V supply, the PIC16F871-E/L core current is approximately 11 mA typical. Adding ADC, USART, and I/O activity raises total to roughly 15 mA. Use a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair (pin 11/12 and pin 32/31), and a bulk 10 uF tantalum or ceramic at the regulator output. For battery-powered designs, leverage nanoWatt Technology sleep modes (Sleep current < 1 uA typical per datasheet) by gating peripheral clocks with PCON/PIE1 registers before issuing the SLEEP instruction.
Estimated: Place the 44-PLCC socket such that pin 1 indicator (chamfered corner or dot) is clearly marked on the silkscreen. Maintain a clearance ring of at least 2 mm around the socket for probe access during ICT. Route the crystal/oscillator traces (OSC1/OSC2) with ground-guard vias on both sides, trace length under 10 mm, and series resistor on OSC2 if using a high-frequency crystal (20 MHz fundamental). For in-circuit debug, bring out RB6/PGC and RB7/PGD to a 2x5 or 1x6 header with a 10 kohm pull-up on MCLR/VPP.
Critical: (1) Never leave MCLR floating — always tie through a 10 kohm pull-up to VDD, or to the ICSP programmer's high-voltage VPP during programming. (2) When using the ADC, set the corresponding TRIS bit to input and select analog mode in the ADCON1 register — leaving digital output mode loaded onto an analog pin yields spurious ADC readings. (3) The CCP1 and CCP2 pins double as PORTC functions; ensure the firmware disables unused CCP modules to release the pins for GPIO. (4) nanoWatt Technology is enabled via PCON/PIE1 register writes; merely entering Sleep without proper clock-switching leaves peripherals active and current consumption high.
تعمیل کی معلومات
RoHS compliant per Microchip product page. NOT AEC-Q100 qualified - the -E temperature grade extends to +125 C but does not carry AEC-Q100 automotive certification. For AEC-Q100 designs, select a PIC16 or PIC18 automotive-grade variant. Halogen-free status not explicitly stated in provided web data - flagged as unknown.
