PIC16F877AT-I/PTG - 8-bit 20MHz MCU 14KB Flash TQFP-44 | Microchip
MPN: PIC16F877AT-I/PTG ✓ فعالPIC16F877AT-I/PTG جائزہ
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash/ROM), working memory (RAM), non-volatile data storage (EEPROM), and peripherals such as timers, ADC, communication ports, and I/O. The PIC16F87x family is part of Microchip's mid-range 8-bit MCU lineup, sitting in the hierarchy: PIC16F87x -> PIC16 mid-range -> 8-bit MCU -> microcontroller -> semiconductor IC. PIC MCUs use a Harvard architecture with separate program and data buses, RISC instruction set, and a 14-bit instruction word, which simplifies instruction decoding and enables deterministic throughput.
Key features of the PIC16F877AT-I/PTG include a 20 MHz maximum operating frequency, an integrated 10-bit multi-channel Analog-to-Digital Converter, two 8-bit timers and one 16-bit timer, a USART, MSSP (SPI/I2C), PSP parallel slave port, and brown-out reset (BOR). The wide operating voltage range of 2.0V to 5.5V (industrial -40C to +85C) supports both 3.3V and 5V designs. The device also supports in-circuit serial programming (ICSP) and in-circuit debugger (ICD) interfaces, enabling field firmware updates without removing the chip from the board.
Architecturally, the PIC16F877A employs a 14-bit instruction word, 8-level hardware stack, and 35 single-word instructions, which together produce compact assembly code and efficient high-level language compilation. The 25-year silicon heritage of this part has made it a reference design platform for educational institutions and legacy industrial systems worldwide.
Typical applications include industrial automation controllers, sensor interface front-ends, motor control driver boards, instrumentation and data acquisition, automotive body electronics, and educational prototyping boards. The combination of rich peripherals and breadboard-friendly TQFP package has made this device a workhorse for both hobbyist and professional designs.
When designing with this part, ensure decoupling capacitors (0.1 uF and 10 uF) are placed within 5 mm of the VDD pins. Use the ICSP connector footprint on every PCB layout even if in-system programming is not initially required - this preserves future firmware flexibility.
This page consolidates distributor pricing, drop-in alternatives, and practical engineering guidance that supplements - but does not replace - the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC16F877AT-I/PTG — 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 PIC16F877AT-I/PTG (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Timers, Operating Temperature, ADC, Program Memory (Flash).
PIC16F877A-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877-20I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877A-E/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F874AT-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F4520-I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F877AT-I/PTG زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16, 8-bit RISC, 14-bit instruction word |
| Program Memory Type | Flash |
| Program Memory Size | 14 KB (8K x 14 words) |
| RAM | 368 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 20 MHz |
| Supply Voltage Range | 4.0 V to 5.5 V (4.5 V to 5.5 V for industrial per source) |
| آپریٹنگ درجہ حرارت | -40 C to +85 C (Industrial, "I" grade) |
| Digital I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | Two 8-bit + One 16-bit (3 total) |
| Capture/Compare/PWM | 2 CCP modules |
| Communication | USART (SCI), MSSP (SPI / I2C), PSP |
| پیکیج | 44-pin TQFP (MQFP-44), 10 x 10 mm, 2 mm height, MS-022 |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Packaging Type | Tape & Reel (suffix "G") |
| MSL لیول | 3 (per typical Microchip TQFP-44 profile) |
| Lead-Free / RoHS | Lead Free / RoHS Compliant |
PIC16F877AT-I/PTG پن کنفیگریشن
| پن 1 | MCLR#/VPP — Master Clear (active-low reset) / programming voltage input |
| پن 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| پن 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| پن 4 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC VREF- |
| پن 5 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC VREF+ |
| پن 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| پن 7 | RA5/AN4/SS# — Digital I/O / Analog input channel 4 / SPI slave select |
| پن 8 | RE0/RD#/AN5 — Digital I/O / Parallel slave read strobe / Analog ch5 |
| پن 9 | RE1/WR#/AN6 — Digital I/O / Parallel slave write strobe / Analog ch6 |
| پن 10 | RE2/CS#/AN7 — Digital I/O / Parallel slave chip select / Analog ch7 |
| پن 11 | VDD — Positive supply voltage |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| پن 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| پن 15 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock |
| پن 16 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 PWM |
| پن 17 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| پن 18 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| پن 19 | RD0/PSP0 — Digital I/O / Parallel slave port data bit 0 |
| پن 20 | RD1/PSP1 — Digital I/O / Parallel slave port data bit 1 |
| پن 21 | RD2/PSP2 — Digital I/O / Parallel slave port data bit 2 |
| پن 22 | RD3/PSP3 — Digital I/O / Parallel slave port data bit 3 |
| پن 23 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| پن 24 | RC5/SDO — Digital I/O / SPI data out |
| پن 25 | RC6/TX/CK — Digital I/O / USART transmit / USART clock |
| پن 26 | RC7/RX/DT — Digital I/O / USART receive / USART data |
| پن 27 | RD4/PSP4 — Digital I/O / Parallel slave port data bit 4 |
| پن 28 | RD5/PSP5 — Digital I/O / Parallel slave port data bit 5 |
| پن 29 | RD6/PSP6 — Digital I/O / Parallel slave port data bit 6 |
| پن 30 | RD7/PSP7 — Digital I/O / Parallel slave port data bit 7 |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply voltage |
| پن 33 | RB0/INT — Digital I/O / External interrupt input |
| پن 34 | RB1 — Digital I/O |
| پن 35 | RB2 — Digital I/O |
| پن 36 | RB3/PGM — Digital I/O / Low-voltage ICSP programming |
| پن 37 | RB4 — Digital I/O / interrupt-on-change |
| پن 38 | RB5 — Digital I/O / interrupt-on-change |
| پن 39 | RB6/PGC — Digital I/O / ICSP clock / interrupt-on-change |
| پن 40 | RB7/PGD — Digital I/O / ICSP data / interrupt-on-change |
| پن 41 | NC — Not connected (no internal bond) |
| پن 42 | NC — Not connected (no internal bond) |
| پن 43 | NC — Not connected (no internal bond) |
| پن 44 | NC — Not connected (no internal bond) |
عام استعمالات
PIC16F877AT-I/PTG کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Automation Controller, Educational Development Board, Sensor Interface Front-End, Hobbyist Robotics Control, Automotive Body Electronics, Data Acquisition Module.
Industrial Automation Controller
The PIC16F877AT-I/PTG fits industrial automation controllers through its 33 digital I/O and 20 MHz 5 MIPS core, which drive relay banks, optocoupler inputs, and 4-20 mA loops. Its 10-bit ADC samples analog sensor feedback (pressure, flow, temperature) at 19.5 us per channel. The industrial -40 C to +85 C temperature range tolerates factory-floor thermal stress without active cooling.
تجویز کردہ
Educational Development Board
The PIC16F877AT-I/PTG is a staple of university microcontroller courses due to its comprehensive peripheral set in a breadboard-compatible TQFP-44 carrier. Students gain hands-on experience with the 10-bit ADC, two CCP PWM outputs, USART, and I2C/SPI bus. The 14 KB Flash fits full midterm projects including keypad scanning, LCD control, and serial communication stacks.
تجویز کردہ
Sensor Interface Front-End
The PIC16F877AT-I/PTG is widely deployed as a sensor hub that aggregates analog and digital signals into a serial datastream. Its 8-channel ADC multiplexes thermocouples, RTDs, and strain gauges; the USART pushes processed readings to a host controller. Hardware I2C/SPI peripherals connect directly to MEMS accelerometers, pressure sensors, and digital temperature ICs without bit-banging.
تجویز کردہ
Hobbyist Robotics Control
The PIC16F877AT-I/PTG suits small robotics platforms where its two CCP modules generate complementary PWM for driving half-bridge motor drivers. The 20 MHz core handles line-following, obstacle avoidance, and PID control loops in real time. Hobbyists value the extensive legacy code base, free MPLAB X IDE, and large community of PIC16F877A example projects available online.
تجویز کردہ
Automotive Body Electronics
The PIC16F877AT-I/PTG is deployed in non-safety automotive body modules such as HVAC blend-door actuators and lighting controllers. Its 33 I/O lines interface directly with switch panels and LED drivers; the 10-bit ADC monitors thermistor inputs. Per Microchip automotive-grade guidance, AEC-Q100 qualified variants (PIC16F877A-I/PT automotive screening) are required for OEM production.
تجویز کردہ
Data Acquisition Module
The PIC16F877AT-I/PTG functions as a compact multi-channel data logger, leveraging its 8-channel 10-bit ADC, USART, and I2C bus to record process variables. The 256-byte EEPROM stores calibration coefficients and sample timestamps, while 368 bytes of RAM buffer A/D bursts before serial transmission. Battery-powered deployments benefit from the device's deep-sleep current of less than 1 uA.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16F877AT-I/PTG — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F877A-I/PT | PIC16F877-20I/PT | PIC16F877A-E/PT | PIC16F874AT-I/PT | PIC18F4520-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC16 8-bit, 14-bit instruction, 20 MHz | PIC16 8-bit, 14-bit, 20 MHz | PIC16 8-bit, 14-bit, 20 MHz | PIC16 8-bit, 14-bit, 20 MHz | PIC16 8-bit, 14-bit, 20 MHz | PIC18 8-bit, 16-bit instruction, 40 MHz |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 32 KB (+129%) |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 192 bytes (-48%) | 1536 bytes (+317%) |
| Digital I/O | 33 | 33 | 33 | 33 | 33 | 36 |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 13 channels |
| Operating Temperature | -40 C to +85 C (Industrial "I") | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.2 V to 5.5 V |
| Q1-1 Price (USD) | 9.20 | 8.85 | 8.10 | 9.40 | 8.95 | 7.60 |
اہم امتیازی خصوصیات
- Lower operating voltage range than PIC18F4520-I/PT (بمقابلہPIC18F4520-I/PT)
- Full 14 KB Flash memory at lower price point than PIC16F877A-E/PT (بمقابلہPIC16F877A-E/PT)
- More Flash than PIC16F874AT-I/PT (بمقابلہPIC16F874AT-I/PT)
ڈیزائن نوٹس
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VDD pin (pins 11 and 32) and a single 10 uF bulk tantalum or ceramic capacitor at the board power entry. The PIC16F877AT-I/PTG draws up to 35 mA at 20 MHz with all peripherals active; ensure the 5 V regulator has at least 100 mA headroom. Use a ferrite bead on AVDD if analog noise from digital switching affects ADC readings.
Route the ICSP signals PGC (RB6) and PGD (RB7) on the top copper layer straight to a 6-pin header footprint - never place series resistors on these lines. Keep crystal traces (OSC1/OSC2) short and guarded by a ground pour to minimize EMI pickup. For TQFP-44, use 0.20 mm trace/space with 0.25 mm via-in-pad if board density requires it; otherwise 0.30 mm is sufficient for 5 V signals.
Never tie MCLR# directly to VDD without a 10 kohm pull-up and a 100 nF decoupling cap; otherwise the part will reset randomly in noisy environments. Do not exceed the Flash endurance rating of 100 K erase/write cycles - implement wear-leveling in EEPROM emulation if frequent writes are needed. When using the internal ADC, set the A/D acquisition time to at least 19.5 us or sample accuracy will degrade.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Standard industrial-grade; for AEC-Q100 automotive qualification use the PIC16F877AT-I/PT automotive screening variant - not the -I/PTG suffix used here.
