PIC16F877-04I/PT - 8-bit 4MHz MCU 14KB Flash 44-TQFP | Microchip
MPN: PIC16F877-04I/PT ✓ فعالPIC16F877-04I/PT جائزہ
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals such as timers, communication interfaces, and analog-to-digital converters. The PIC16F877 belongs to the mid-range PIC16 family, sitting within the broader taxonomy of 8-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors. It is widely regarded as one of the most popular learning and prototyping MCUs in the industry, with a 35-instruction RISC core that simplifies code development and debugging.
Key features include 33 digital I/O pins, an 8-channel 10-bit Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a Watchdog Timer, and both synchronous and asynchronous serial ports configurable as SPI or I2C, plus a USART. The device operates from 2.0V to 5.5V across an industrial -40C to +85C temperature range, and supports In-Circuit Serial Programming (ICSP) plus In-Circuit Debugging (ICD) via dedicated pins.
Architecturally, the PIC16F877 employs a Harvard architecture with separate program and data buses, allowing instruction fetch and data access to occur in the same clock cycle. The 14-bit instruction word and 8-bit data path are characteristic of the mid-range PIC16 core, and Microchip provides a mature MPLAB X IDE and XC8 toolchain for firmware development. The 'I' suffix denotes the industrial temperature grade.
Typical applications include industrial control and automation nodes, sensor interface front-ends, educational development boards, low-end data loggers, motor control signal conditioning, and standalone instrumentation. It is also commonly used as a peripheral co-processor in designs where a host processor offloads real-time I/O tasks. The wide operating voltage range allows direct interfacing to 3.3V and 5V system buses with level-shifting minimized by careful pin-group configuration.
When designing with the PIC16F877, ensure the MCLR reset pin is properly biased with the recommended pull-up and decoupling, and that the oscillator configuration bits match the selected crystal or external clock. Because the device's FLASH endurance is typically 1000 erase/write cycles minimum, design code should minimize EEPROM wear through wear-leveling techniques. Adding series resistance on the ICSP/ICD lines helps prevent programming-port damage during in-circuit debugging.
This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in and same-footprint alternatives, and practical design notes not consolidated in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC16F877-04I/PT — 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 PIC16F877-04I/PT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Operating Temperature, Timers, ADC, Core Architecture, Package.
PIC16F877A-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877-04/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877-20/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877-04I/P
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877-04E/PT
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F887-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877-04I/PT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC 8-bit RISC, mid-range |
| Instruction Set | 35 single-word instructions, 14-bit instruction word |
| Program Memory (FLASH) | 14 KB (8K x 14 words) |
| Data SRAM | 368 bytes |
| Data EEPROM | 256 bytes |
| زیادہ سے زیادہ کلاک فریکوئنسی | 4 MHz (4 MHz part, -04 speed grade) |
| Instruction Throughput | 4 MIPS at 4 MHz (1 us/instruction) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Digital I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 2x 8-bit + 1x 16-bit + Watchdog Timer |
| CCP Modules | 2 (Capture / Compare / PWM) |
| Serial Interfaces | SSP (SPI / I2C) + USART |
| آپریٹنگ درجہ حرارت | -40C to +85C (industrial, 'I' grade) |
| پیکیج | 44-pin TQFP (PT) 10x10 mm |
| Programming/Debug | ICSP + ICD (In-Circuit Serial Programming + Debug) |
| ماؤنٹنگ ٹائپ | Surface Mount |
PIC16F877-04I/PT پن کنفیگریشن
| پن 1 | MCLR — Master Clear (reset) input, active low |
| 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 / SPI Slave Select |
| پن 8 | RE0/RD/AN5 — PORTE bit 0 / Read control for parallel slave port / Analog input 5 |
| پن 9 | RE1/WR/AN6 — PORTE bit 1 / Write control for parallel slave port / Analog input 6 |
| پن 10 | RE2/CS/AN7 — PORTE bit 2 / Chip select for parallel slave port / Analog input 7 |
| پن 11 | VDD — Positive supply voltage (+2.0V to +5.5V) |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| پن 14 | OSC2/CLKOUT — Oscillator crystal 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 input/output |
| پن 17 | RC2/CCP1 — PORTC bit 2 / CCP1 input/output |
| 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 (+2.0V to +5.5V) |
| پن 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| پن 34 | RB1 — PORTB bit 1 |
| پن 35 | RB2 — PORTB bit 2 |
| پن 36 | RB3/PGM — PORTB bit 3 / Low-voltage ICSP programming input |
| پن 37 | RB4 — PORTB bit 4 |
| پن 38 | RB5 — PORTB bit 5 |
| پن 39 | RB6/PGC — PORTB bit 6 / ICSP clock input |
| پن 40 | RB7/PGD — PORTB bit 7 / ICSP data input/output |
| پن 41 | VSS — Ground reference |
| پن 42 | VDD — Positive supply voltage (+2.0V to +5.5V) |
| پن 43 | VSS — Ground reference |
| پن 44 | VDD — Positive supply voltage (+2.0V to +5.5V) |
عام استعمالات
PIC16F877-04I/PT کے لیے موزوں ہے 7 ایپلیکیشنs: Industrial Sensor Interface Node, Educational Development Board / Trainer, Standalone Data Logger Front-End, Low-Speed PWM Motor / LED Driver, Peripheral Co-Processor for Host CPU, Automotive Body Electronics (Non-Safety), Appliance Control Module.
Industrial Sensor Interface Node
The PIC16F877-04I/PT is well suited as a sensor interface node in industrial control systems: its 8-channel 10-bit ADC handles multiple analog inputs (temperature, pressure, light) while the SPI/I2C/USART peripherals forward data to a host controller or networked sensor bus. The 4 MHz clock is sufficient for moderate sampling rates up to ~50 kHz aggregate, and the 33 I/O pins drive status LEDs, optocouplers, and relay drivers directly. Industrial -40C to +85C temperature range ensures operation in factory cabinets without derating.
تجویز کردہ
Educational Development Board / Trainer
The PIC16F877-04I/PT has been a mainstay of university microcontroller courses and hobby projects for over two decades, due to its simple 35-instruction RISC core, abundant 14 KB FLASH, and free Microchip MPLAB X + XC8 toolchain. It is the brain of countless trainer boards that include LEDs, push buttons, an LCD, a potentiometer on the ADC, and an ICSP header for in-circuit programming. The 4 MHz part (-04 grade) is the canonical speed for textbook examples and emulator-friendly timing.
تجویز کردہ
Standalone Data Logger Front-End
With 256 bytes of EEPROM, the PIC16F877-04I/PT can buffer timestamped sensor readings before offloading to non-volatile media via SPI (e.g., to an external EEPROM or SD card). The 10-bit ADC is adequate for environmental monitoring (humidity, light, thermistor channels), and the Watchdog Timer guards against firmware lockup in unattended deployments. The 2.0V-5.5V operating range allows direct battery or solar-power supply with no additional regulator at modest duty cycles.
تجویز کردہ
Low-Speed PWM Motor / LED Driver
The two CCP modules of the PIC16F877-04I/PT generate PWM signals for brushed DC motor speed control, fan speed, or LED dimming, while 25 mA source/sink on I/O pins drives small MOSFETs directly. At 4 MHz (250 ns instruction cycle, 1 us/instruction), PWM frequencies up to ~10 kHz with 8-10 bit resolution are easily achievable with proper timer setup. The 33 I/O pins support multiple motor channels and quadrature encoder feedback inputs.
تجویز کردہ
Peripheral Co-Processor for Host CPU
In systems with a high-end host processor (e.g., ARM Cortex-A), the PIC16F877-04I/PT acts as a low-cost co-processor handling real-time I/O housekeeping: keypad scanning, character LCD driving, push-button debouncing, and discrete control outputs. The USART/I2C/SPI ports give it flexible connectivity to the host, and the 14 KB FLASH holds substantial lookup tables and state machines. This offloads interrupt-heavy chores from the host CPU.
تجویز کردہ
Automotive Body Electronics (Non-Safety)
Although not AEC-Q100 qualified, the PIC16F877-04I/PT is used in hobby and aftermarket automotive body-electronics applications such as auxiliary lighting controllers, HVAC flaps, gauge displays, and CAN node prototyping (paired with an MCP2515 stand-alone CAN controller and MCP2551 transceiver). Its industrial -40C to +85C range tolerates cabin-temperature operation, and its small 44-pin TQFP package fits behind dashboard trim spaces. Production safety-relevant functions should migrate to AEC-Q100 qualified dsPIC or PIC18 parts.
تجویز کردہ
Appliance Control Module
The PIC16F877-04I/PT fits home appliance controllers for washing machines, microwaves, and air conditioners where 33 I/O pins drive multiplexed 7-segment displays, keypads, triac-fired loads, and triac zero-cross detection circuits. The 10-bit ADC reads temperature, humidity, and current-sensing shunts. The robust PIC instruction set supports complex state machines for sequencing wash cycles, cooking profiles, or HVAC modes while the 2.0V-5.5V range tolerates rectified mains-derived supplies.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16F877-04I/PT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F877A-I/PT | PIC16F877-04/PT | PIC16F887-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same |
| Max Clock Frequency | 4 MHz | 20 MHz (+400%) | 4 MHz (same) | 20 MHz (+400%) |
| FLASH Program Memory | 14 KB | 14 KB (same) | 14 KB (same) | 14 KB (same) |
| Data SRAM | 368 bytes | 368 bytes (same) | 368 bytes (same) | 368 bytes (same) |
| Data EEPROM | 256 bytes | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) |
| Digital I/O Pins | 33 | 33 (same) | 33 (same) | 36 (+9%) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| Supply Voltage | 2.0V to 5.5V | 2.0V to 5.5V (same) | 2.0V to 5.5V (same) | 2.0V to 5.5V (same) |
اہم امتیازی خصوصیات
- Mature, well-documented RISC core with abundant third-party learning resources (بمقابلہPIC16F887-I/PT)
- Industrial temperature grade with proven long-term supply (بمقابلہPIC16F877-04/PT (commercial 0C to +70C))
- Standard 4 MHz speed grade aligns with classic textbook timing (بمقابلہPIC16F877A-I/PT (20 MHz))
ڈیزائن نوٹس
Decouple each VDD pin (11, 32, 42, 44) with a 100 nF ceramic capacitor placed within 5 mm of the pin to a nearby VSS pin. For noise-sensitive analog measurements, add a bulk 10 uF electrolytic capacitor to the supply rail and a ferrite bead if the rail is shared with digital loads. The PIC16F877-04I/PT draws typical supply current of ~5-15 mA active at 4 MHz, but the analog VREF+ and ADC block benefit from a clean reference - apply a dedicated LDO if the system rail is noisy.
Configure the ADCON1 register to set which PORTA/PORTE pins are analog (default after reset is all analog on PORTA, blocking digital I/O). Always specify configuration bits (FOSC, WDTE, PWRTE, BOREN, LVP, CPD, CP, etc.) explicitly in code - using the MPLAB X default config can accidentally enable Low-Voltage Programming (LVP) and leave PORTB unavailable as general I/O. Brown-Out Reset should be enabled in most line-powered designs to prevent undefined behavior during supply dips.
The MCLR pin is sensitive to noise; route the reset circuit (typically 10k pull-up to VDD and a 100 nF to ground) close to the pin. For ICSP programming, place series resistors (typically 10k) on PGC/PGD (RB6/RB7) to allow programming without removing components from the production PCB. Keep the ICSP connector at the board edge to allow probe access without disassembly.
The PIC16F877-04I/PT in the 44-pin TQFP (10x10 mm) package has a thermal resistance theta_JA around 50-60 C/W depending on PCB copper area. At 4 MHz the device typically consumes under 50 mW, so active thermal management is rarely required. However, in sealed enclosures or with output pins sourcing/sinking maximum current (25 mA per pin, 200 mA total package limit), power dissipation can rise and a small copper pour for thermal spreading is recommended.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this part is intended for industrial, consumer, and educational use, not automotive safety applications. Lead-free packaging per Microchip standard since Pb-free transition.