PIC16F877T-20I/PT - 20MHz 8-Bit MCU | Microchip Technology
MPN: PIC16F877T-20I/PT ✓ نشطPIC16F877T-20I/PT نظرة عامة
An 8-bit microcontroller is a programmable semiconductor integrated circuit that executes embedded-control instructions using an 8-bit data path. Within the product hierarchy, the PIC16F877 belongs to Microchip’s mid-range PIC16 family, combining general-purpose digital control, Flash program memory, data RAM, and dedicated communication peripherals in one device. The PIC16F877T-20I/PT is therefore more capable than simple 8-bit logic controllers while remaining simpler than many 16- and 32-bit processors.
Key features include 14 KB of Flash program memory, 368 bytes of RAM, 33 I/O pins, and a maximum clock frequency of 20 MHz. Its industrial-temperature designation identifies it for extended-temperature equipment, while the -20 suffix specifies the 20 MHz performance grade. According to the manufacturer product page, the core uses a powerful RISC-based PIC architecture with 35 single-word instructions and 200 ns instruction execution, supporting efficient control loops, timing, and serial-interface handling.
The integrated feature set supports embedded designs that require multiple I/O lines, asynchronous and synchronous serial communication, timers, interrupts, and programmable digital interfaces. A 44-pin TQFP provides substantially more I/O connectivity than smaller 28-pin and 40-pin microcontroller packages, making the device suitable for controller boards where external logic, sensors, relays, communication transceivers, and human-interface circuitry must connect to one controller.
Typical applications include industrial monitoring and control, communication equipment, data acquisition, motor and relay control, instrumentation, and embedded products requiring an extended-temperature 8-bit MCU. The 20 MHz operating speed provides additional timing margin for interrupt-driven control, while 33 I/O pins reduce the need for external I/O expanders. The 14 KB Flash area also allows meaningful embedded code, bootloader logic, and configuration storage within a single device.
Designers should verify the exact peripheral mapping, electrical limits, programming requirements, and timing constraints against the manufacturer datasheet before layout release. A 44-pin TQFP footprint requires adequate copper area and careful fan-out for signal integrity and assembly. The industrial grade should be confirmed for every unverified operating-temperature requirement, and firmware should be validated for all interrupt priorities, peripheral interactions, and communication rates.
This product data consolidates the verified manufacturer and distributor information, distinguishes package and temperature variants, and identifies where drop-in alternatives require careful compatibility review. It also adds practical comparison and selection guidance that is not normally presented together on a distributor listing, helping engineers assess procurement, PCB reuse, and firmware compatibility more efficiently.
بدائل مباشرة لـ PIC16F877T-20I/PT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16F877T-20I/PT (نفس عامل الشكل والبصمة) — يختلف في Architecture, Package, Product Type, Program Memory, Program Memory Type.
PIC16F877T-20/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F877A-20I/PT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F877A-20/PT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F877T-20I/PQ
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F877A-20I/PQ
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F877T-20I/PT الحدود القصوى والخصائص الكهربائية
| Product Type | 8-bit Flash-based PIC Microcontroller |
| أقصى تردد للساعة | 20 MHz |
| Program Memory | 14 KB (8K x 14 words) Flash |
| Data Memory | 368 bytes RAM |
| I/O Pin Count | 33 pins |
| العلبة | 44-TQFP (10 x 10 mm) |
| Architecture | PIC RISC-based 8-bit |
| Instruction Execution | 200 ns |
| Instruction Set | 35 single-word instructions |
| Process Technology | CMOS |
| Program Memory Type | Flash |
| Temperature Grade | Industrial |
| جهد التغذية | 5 V |
| نوع التركيب | Surface Mount |
| Terminal Count | 44 terminals |
| Package Shape | Square |
دليل تكوين أطراف PIC16F877T-20I/PT square
تكوين الأطراف لـ PIC16F877T-20I/PT (حزمة square). تتضمن هذه الدائرة المتكاملة الرقمية GPIO وواجهات الاتصال (UART وSPI وI2C) وأطراف الطاقة. راجع ورقة بيانات الشركة المصنعة لوظائف الأطراف البديلة وخيارات التكوين. ضرورية لتصميم الأنظمة المدمجة وتخطيط PCB.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ PIC16F877T-20I/PT.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
PIC16F877T-20I/PT مناسب لـ 6 التطبيقs: Industrial Monitoring and Control, Communication Gateway Controller, Data Acquisition Front End, Motor and Relay Control, Embedded Instrumentation, HMI and Control Panel.
Industrial Monitoring and Control
The PIC16F877T-20I/PT fits industrial monitoring systems that need extended-temperature operation, 33 I/O pins, and deterministic 8-bit control without the overhead of a higher-performance processor. Its 20 MHz maximum clock supports interrupt-driven sampling and timing, while 14 KB of Flash program memory can hold acquisition routines, alarm logic, and configuration handling. The 368 bytes of RAM provide working memory for current measurements and state variables. Place the controller between sensor conditioning electronics and display, relay, or communications circuitry, and confirm that the industrial-temperature requirement covers the complete equipment enclosure and process environment.
موصى به
Communication Gateway Controller
The PIC16F877T-20I/PT is appropriate for protocol-conversion or communications-hub duties that combine serial interfaces, timing, and control I/O. Its 20 MHz clock provides processing margin for framing, buffering, and supervisory logic, while the 33 available I/O lines can support status indicators, resets, modem control, and multiple peripheral connections. The 14 KB Flash region is suitable for compact protocol stacks or boot logic, and 368 bytes of RAM supports transient packet and status storage. Validate baud-rate accuracy, interrupt latency, and peripheral multiplexing for the selected clock configuration before releasing the communication firmware.
موصى به
Data Acquisition Front End
The PIC16F877T-20I/PT can coordinate sensors, counters, and multiplexed analog front ends in compact data-acquisition equipment. Its 33 I/O pins reduce external logic and allow digital sensors, switches, latch signals, and status outputs to share a controller. At up to 20 MHz, the device can service timed sampling and interrupt-driven transfers, while 14 KB of Flash provides room for calibration tables and acquisition routines. The 368-byte RAM buffer must be sized around the selected sample rate and transfer latency. Analog accuracy and reference quality are determined mainly by external circuitry, so use the MCU for control and data handling rather than as a precision converter.
موصى به
Motor and Relay Control
The PIC16F877T-20I/PT is well suited to compact sequencing and relay-control platforms because it combines a 20 MHz control core with 33 I/O pins. Timers and interrupts can coordinate operating sequences, while the Flash memory retains control firmware and configuration data across power cycles. Its 368 bytes of RAM supports timers, counters, and state-machine variables for typical actuator panels. When driving relays, motors, or solenoids, use suitable driver transistors, isolation, flyback protection, and separate power routing rather than switching inductive loads directly from MCU pins. Validate timing under worst-case interrupt load and confirm that any connected network interface is isolated from switching transients.
موصى به
Embedded Instrumentation
The PIC16F877T-20I/PT can serve as the control core of compact instrumentation where a deterministic 8-bit MCU, multiple I/O pins, and modest program memory are needed. Its 20 MHz operating class supports measurement sequencing, local display updates, key input, and configuration storage, while the industrial-temperature grade supports extended-range equipment when properly qualified. The 14 KB Flash region is appropriate for calibration and self-test routines, and 368 bytes of RAM can hold live readings and UI state. Designers should isolate analog measurement paths from the MCU supply and switching circuitry, then validate display timing and peripheral interaction across voltage and temperature extremes.
موصى به
HMI and Control Panel
The PIC16F877T-20I/PT provides enough I/O and Flash memory for a human-machine interface controller built around buttons, indicators, displays, and external switches. The 33 I/O lines simplify direct connection of panel controls, and the 20 MHz clock allows responsive interrupt-driven key scanning and display multiplexing. Its 368-byte RAM supports menu state, debounce counters, and temporary formatted data, while the 14 KB Flash area accommodates UI code, diagnostics, and boot handling. Use the MCU with suitable display drivers and logic-level buffers, and account for ESD protection, connector stress, and grounding on panels connected to field wiring.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16F877T-20I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16F877T-20/PT | PIC16F877A-20I/PT | PIC16F877A-20/PT | PIC16F877T-20I/PQ | PIC16F877A-20I/PQ |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10 x 10 mm) | 44-TQFP (10 x 10 mm) | 44-TQFP (10 x 10 mm) | 44-TQFP (10 x 10 mm) | 44-TQFP (10 x 10 mm) | 44-TQFP (10 x 10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Architecture | 8-bit PIC RISC-based | 8-bit PIC RISC-based | 8-bit PIC RISC-based | 8-bit PIC RISC-based | 8-bit PIC RISC-based | 8-bit PIC RISC-based |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 14 KB Flash (8K x 14 words) | 14 KB Flash (8K x 14 words) | 14 KB Flash (8K x 14 words) | 14 KB Flash (8K x 14 words) | 14 KB Flash (8K x 14 words) | 14 KB Flash (8K x 14 words) |
| Data Memory | 368 bytes RAM | 368 bytes RAM | 368 bytes RAM | 368 bytes RAM | 368 bytes RAM | 368 bytes RAM |
| I/O Pins | 33 pins | 33 pins | 33 pins | 33 pins | 33 pins | 33 pins |
| Temperature Grade | Industrial | Commercial | Industrial | Commercial | Industrial | Industrial |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
أبرز الفروقات
- Industrial-temperature ordering option (مقابلPIC16F877T-20/PT)
- Original 44-pin TQFP package implementation (مقابلPIC16F877-20I/PT)
- Established PIC16F877 device continuity (مقابلPIC16F877A-20I/PT)
- 20 MHz speed grade with substantial I/O capacity (مقابلPIC16F877T-20/PT)
ملاحظات التصميم
Treat the 44-TQFP footprint as a component-specific PCB library object and verify it against the manufacturer package drawing before release. Check pad dimensions, solder-mask expansion, paste volume, and courtyard clearance rather than assuming that every 44-pin TQFP is mechanically identical. Preserve access to programming, reset, clock, and debug-related signals. Because the verified web excerpts do not provide a complete package pin table, do not use the pinout from a 40-pin DIP or another PIC16F877 package as a substitute.
Separate sensitive measurement and communication paths from relay, motor, and switching-supply return currents. Follow the manufacturer datasheet for the required 5 V decoupling network and place local bypass components at the supply pins with a short, low-loop current path. Check input voltage, I/O injection limits, and output-drive loading against the actual board. If the 20 MHz operating point shares a board with switching circuitry, validate the complete supply ripple and transient response on hardware rather than relying only on the nominal 5 V rating.
Do not substitute PIC16F877-20I/PT for PIC16F877T-20I/PT merely because their core and memory specifications appear similar: the verified listings identify different package formats. Likewise, the non-I PIC16F877T-20/PT may not satisfy an industrial ambient-temperature requirement. For any proposed replacement, verify the exact package drawing, pin names, electrical limits, peripheral set, configuration words, programming method, and existing firmware compatibility. A successful electrical connection is not sufficient if the product qualification assumes industrial temperature.
Route the oscillator and decoupling connections ahead of functional signals, and keep switching-node copper away from sensitive control traces. Use a stable ground reference and short return paths for communications and timer inputs. The 33 I/O pins simplify board partitioning, but output toggling rates can couple into adjacent nets; inspect high-speed edges with an oscilloscope and consider series damping where required. Validate external bus timing and peripheral interrupt behavior at the intended 20 MHz clock configuration.
معلومات الامتثال
The supplied verified excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status for this exact ordering code. AEC-Q100 is not applicable because the verified data identifies an industrial-temperature MCU rather than an automotive-qualified device.
