PIC16F876T-20/SO Tech Specifications
Microchip - PIC16F876T-20/SO technical specifications, attributes, parameters and parts with similar specifications to Microchip - PIC16F876T-20/SO

Product Attribute	Attribute Value
Part Number	PIC16F876T-20/SO
Package	-
Description	-
Stock Condition	Get 15940 pcs available quantity at Allelco
Payment	PayPal / TT / Credit Card / Western Union
Allelco Certifications	ESD / ISO 9001 / ISO 13485 / ISO 28000

Product Attribute	Attribute Value
Manufacturer	Microchip Technology
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Parts Introduction

Manufacturer Part Number

PIC16F876T-20/SO

Manufacturer

microchip-technology

Introduction

The PIC16F876T-20/SO is a high-performance, 8-bit microcontroller from Microchip Technology. It features a powerful PIC core, comprehensive peripherals, and flexible memory configuration, making it suitable for a wide range of embedded applications.

Product Features and Performance

8-bit PIC core with up to 20MHz operating speed

14KB (8K x 14) FLASH program memory

256 x 8 EEPROM data memory

368 x 8 RAM

Peripherals include I2C, SPI, UART/USART, Brown-out Detect/Reset, POR, PWM, and WDT

22 I/O pins

5 x 10-bit ADCs

External oscillator support

Product Advantages

Powerful and flexible microcontroller for diverse embedded applications

Comprehensive peripheral set for efficient system integration

Reprogrammable FLASH memory for easy firmware updates

Low power consumption for battery-powered designs

Key Reasons to Choose This Product

Robust and reliable PIC architecture

Extensive peripheral integration for versatile system design

Cost-effective solution for embedded control and monitoring applications

Ease of use and development support from Microchip

Quality and Safety Features

Designed and manufactured to Microchip's high quality standards

Brown-out detection and reset for reliable operation

Operating temperature range of 0°C to 70°C

Compatibility

The PIC16F876T-20/SO is compatible with other PIC16F series microcontrollers, allowing for easy migration and code reuse across projects.

Application Areas

Industrial control and automation

Home appliances and consumer electronics

Automotive and transportation systems

Medical devices and instrumentation

Wireless and IoT applications

Product Lifecycle

The PIC16F876T-20/SO is an active product from Microchip Technology. There are equivalent and alternative models available, such as the PIC16F877A and PIC16F886. For more information on the product lifecycle and available alternatives, please contact our website's sales team.

Frequently Asked Questions(FAQ)

How does the PIC16F876T-20/SO compare to the PIC16F886T-I/SO in terms of program memory and I/O availability for a compact embedded design requiring moderate peripheral integration?: The PIC16F876T-20/SO offers 14KB of FLASH program memory and 22 general-purpose I/O pins within a 28-SOIC package, making it suitable for mid-range applications such as industrial sensors or consumer automation. In contrast, the PIC16F886T-I/SO provides 36KB of FLASH memory and 25 I/O pins, which allows for more complex firmware and additional interface flexibility. While both share similar core architecture and voltage compatibility, the increased memory and I/O count in the PIC16F886T-I/SO may justify its use when future-proofing or handling larger codebases is a priority. However, for designs constrained by board space and power budget, the PIC16F876T-20/SO remains a cost-effective and thermally efficient choice due to lower quiescent current and smaller footprint.

What are the key limitations of using the PIC16F876T-20/SO at the upper end of its operating temperature range, particularly in industrial environments with intermittent thermal cycling?: Operating the PIC16F876T-20/SO at 70°C introduces several considerations related to long-term reliability under thermal stress. While the device is rated for 0°C to 70°C, continuous operation near this threshold can accelerate electromigration effects in internal interconnects, potentially impacting data retention in EEPROM over time. Additionally, external components such as crystal oscillators or decoupling capacitors may exhibit reduced stability or increased drift, indirectly affecting timing-critical peripherals like UART baud rate accuracy. Although the microcontroller itself includes built-in reset monitoring, designers should ensure adequate thermal margin and verify functional performance through accelerated life testing if deployed in harsh environments.

Can the PIC16F876T-20/SO reliably drive inductive loads directly from its GPIO pins without additional circuitry?: No, the PIC16F876T-20/SO cannot safely drive inductive loads—such as relays, solenoids, or motors—directly from its GPIO pins. These loads generate back EMF during turn-off, which can exceed the device’s absolute maximum rating of VDD + 0.3V and cause latch-up or permanent damage. To mitigate this risk, an external flyback diode must be placed across the inductive element, typically in conjunction with a transistor or MOSFET for switching. This approach ensures that the microcontroller operates within safe voltage limits while maintaining control over higher-power loads.

How does the 20MHz maximum operating frequency of the PIC16F876T-20/SO impact real-time control loop performance in motor-driven applications?: With a 20MHz instruction cycle clock (assuming a 4x PLL enabled), the PIC16F876T-20/SO executes one instruction every 0.2 microseconds. For a typical PID control loop requiring 1000 instructions per iteration, this results in a theoretical minimum loop time of 200 microseconds, or a control frequency of 5kHz. While sufficient for many brushed DC motor applications, faster dynamics or sensor fusion tasks may require optimization through interrupt-driven sampling or assembly-level coding. Designers should also account for context-switching overhead and ensure consistent timing despite compiler optimizations.

What trade-offs exist between using internal versus external oscillators with the PIC16F876T-20/SO, especially regarding system stability and calibration accuracy?: The PIC16F876T-20/SO supports both internal RC oscillators (INTOSC) and external crystal/resonator configurations. Using the internal oscillator simplifies PCB layout and reduces component count but introduces frequency tolerance of ±2% to ±5%, depending on calibration. External crystals offer superior stability (±10–50 ppm) and are preferable for precision timing applications like UART baud generation or RTC functions. However, they increase bill-of-materials cost and require additional load capacitors and routing considerations. For battery-powered systems where startup time matters, the internal oscillator enables faster wake-from-sleep transitions.

Is it feasible to upgrade firmware stored in FLASH on the PIC16F876T-20/SO via a standard serial interface without removing the device from the circuit?: Yes, the PIC16F876T-20/SO supports in-system programming (ISP) using the ICSP protocol over two lines—PGD and PGC—typically implemented via UART-to-serial adapter or dedicated programmer hardware. This allows firmware updates without physical removal, provided the target board maintains proper power supply during programming and avoids contention on shared lines. Care must be taken to disable interrupts and protect critical variables during erase/write cycles due to flash memory block granularity (typically 512-byte pages). Microchip’s MPLAB X IDE supports this workflow with appropriate device configuration bits set for bootloader compatibility.

What precautions should be taken when designing the power supply rail for the PIC16F876T-20/SO to prevent brown-out resets during transient voltage drops?: The PIC16F876T-20/SO features a programmable brown-out detect (BOD) module that monitors VDD and triggers a reset if voltage falls below a user-defined threshold—commonly set to 2.0V or 2.7V depending on application requirements. To avoid nuisance resets, designers should implement adequate bulk capacitance (e.g., 10µF tantalum or ceramic) near the VDD pin and minimize trace inductance. Additionally, a low-dropout regulator (LDO) with fast transient response is recommended when sourcing current from switching supplies. Proper grounding practices and decoupling of each power rail pin with 0.1µF ceramic capacitors further enhance noise immunity and stabilize internal analog subsystems like the ADC.

How does the 10-bit ADC on the PIC16F876T-20/SO perform in terms of effective resolution and noise immunity when sampling slow-changing sensor signals?: The PIC16F876T-20/SO integrates a 10-bit successive approximation ADC with 5 channels, providing a nominal resolution of 1mV at 5V full scale. In practice, however, noise from digital switching or poor analog grounding often reduces effective resolution to 8–9 bits for slowly varying inputs unless proper filtering is applied. For improved accuracy, designers should use oversampling techniques (e.g., averaging 16 samples) and ensure analog input paths are isolated from noisy digital traces. Internal sample-and-hold circuitry requires a minimum acquisition time (~20µs) before conversion begins, so timing must be coordinated with ADC enable sequences.

Why might a designer choose the SOIC-28 package variant of the PIC16F876T-20/SO over smaller footprint alternatives like TSSOP or QFN?: The PIC16F876T-20/SO in 28-SOIC (7.5mm width) provides optimal pin accessibility and solder joint reliability for manual assembly and prototyping environments. Compared to TSSOP or QFN packages, SOIC offers easier inspection under magnification and greater tolerance for minor placement misalignment during reflow. While QFN variants reduce board area by up to 30%, they require careful thermal pad management and expose more sensitive areas to ESD. For production volumes where testability and repairability matter, the SOIC package justifies its slightly larger footprint.

What role does the watchdog timer play in enhancing system robustness when using the PIC16F876T-20/SO in unattended operation?: The integrated Watchdog Timer (WDT) on the PIC16F876T-20/SO acts as a failsafe mechanism that resets the microcontroller if software execution stalls due to infinite loops, unhandled interrupts, or stack overflows. Configured typically with a 16ms to 64s timeout, it forces a controlled restart, preventing hung states in remote installations. To maximize effectiveness, the main application loop must periodically clear the WDT flag (CLRWDT instruction); failure to do so triggers a reset. This feature significantly increases system uptime in battery-powered or embedded monitoring applications where human intervention is impractical.

How does the EEPROM memory in the PIC16F876T-20/SO compare functionally and electrically to FLASH memory in terms of write endurance and access speed?: The PIC16F876T-20/SO contains 256 bytes of EEPROM memory dedicated to non-volatile data storage such as calibration values or configuration flags. Unlike FLASH program memory, EEPROM supports byte-level writes and has a typical endurance of 100,000 cycles, whereas FLASH blocks are erased at page level (512 bytes) and endure around 10,000 cycles. EEPROM write operations require higher voltage internally and take longer (~4ms per byte) compared to read accesses (~200ns), so frequent updates should be buffered to minimize wear. Both memories retain data indefinitely without power, but EEPROM is preferred for infrequently changing parameters.

Are there any known errata or silicon limitations associated with early revisions of the PIC16F876T-20/SO that could affect UART communication stability?: Certain early silicon revisions of the PIC16F876 (pre-Cx) exhibited occasional framing errors in asynchronous UART mode under specific baud rates and clock configurations due to oscillator drift or divider rounding inaccuracies. While Microchip has not mandated revision-specific part numbers for the T-20/SO variant, designers are advised to verify behavior at boundary conditions—such as 115200 baud with a 20MHz external clock—by validating with actual hardware rather than relying solely on simulation. Implementing software baud rate detection and error checking adds resilience against transient mismatches.

What considerations apply when cascading multiple peripherals like SPI devices with the PIC16F876T-20/SO in a daisy-chain topology?: When connecting multiple SPI slaves in series with the PIC16F876T-20/SO, attention must be paid to propagation delay accumulation and signal integrity on MOSI/MISO lines. Each added device introduces parasitic capacitance, potentially degrading rise times beyond the 20MHz clock edge requirements. Pull-up resistors on MISO lines help maintain high-state levels but increase power consumption. Additionally, the limited RAM (368 bytes) constrains buffering large datasets; thus, chunked transfers with minimal overhead are preferable. Firmware must also manage CS (chip select) signaling carefully to avoid bus contention during handshakes.

How does the absence of an on-chip voltage reference impact analog measurements made by the ADC on the PIC16F876T-20/SO?: The PIC16F876T-20/SO lacks a dedicated internal voltage reference, meaning the ADC uses VDD as its reference by default. This ties measurement accuracy directly to power supply stability—a fluctuation of 5% in VDD causes a corresponding 5% error in all ADC readings. For precise applications, an external precision reference (e.g., 2.048V or 4.096V) should be connected to the Vref+ pin, though this requires additional components and limits flexibility. Without external referencing, temperature compensation or periodic recalibration becomes necessary to correct for supply variations.

What factors determine whether the PIC16F876T-20/SO can support a custom bootloader for field updates?: Implementing a bootloader on the PIC16F876T-20/SO is feasible only if sufficient FLASH remains after allocating space for the main application. With 14KB total memory, reserving 2–4KB for a bootloader leaves ~10–12KB for user code. The bootloader must reside in the reset vector area and handle erase/write cycles safely while preserving existing data. Communication protocols like UART or I2C require dedicated pins and interrupt handling, which must coexist with other peripherals. Successful deployment depends on robust error recovery and validation checksums to prevent bricking during failed updates.

How does the moisture sensitivity level (MSL) classification of MSL 1 for the PIC16F876T-20/SO influence handling procedures during PCB assembly?: Classified as MSL 1, the PIC16F876T-20/SO is exempt from special storage or baking requirements and can be exposed to ambient humidity indefinitely without degradation, provided soldering occurs within 168 hours of opening the moisture barrier bag. This simplifies inventory management for high-volume production but still mandates anti-static precautions during handling. As with all surface-mount components, proper preheat profiling during reflow prevents thermal shock, especially important given the device’s moderate operating temperature range and potential sensitivity to rapid cooling.

What design constraints arise from the 8-bit data path width when implementing floating-point arithmetic with the PIC16F876T-20/SO?: Due to its 8-bit architecture, the PIC16F876T-20/SO lacks native hardware support for 16-bit or 32-bit operations, requiring software emulation for floating-point calculations. Multi-byte multiplications, divisions, and trigonometric functions consume significant CPU cycles—often exceeding 1000 instructions—and drastically increase execution time compared to 16-bit MCUs. Memory bandwidth is also constrained by limited RAM, making efficient variable management essential. For applications involving sensor fusion or advanced control algorithms, fixed-point approximations or lookup tables are typically used instead of IEEE 754 compliance.

How does the REACH and RoHS compliance status of the PIC16F876T-20/SO impact global market deployment and supply chain planning?: The PIC16F876T-20/SO meets RoHS3 standards, eliminating restricted substances such as lead, mercury, and cadmium, and is classified as REACH unaffected, indicating no SVHC (substance of very high concern) content above regulatory thresholds. These certifications facilitate unrestricted distribution in the EU, North America, and other regulated markets, reducing customs delays and audit overhead. Suppliers can confidently source this component without additional documentation requests, streamlining procurement for consumer electronics, medical devices, and automotive sub-components where environmental regulations are stringent.

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

Write a Review

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

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PIC16F876T-20/SO

Microchip
41D-PIC16F876T-20/SO

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PIC16F876T-20/SO - Microchip

Specifications

Parts Introduction

Manufacturer Part Number

Manufacturer

Introduction

Product Features and Performance

Product Advantages

Key Reasons to Choose This Product

Quality and Safety Features

Compatibility

Application Areas

Product Lifecycle

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

Solid diode for power rectification. Works well in switching circuits.

Compact FPGA with good performance. Suitable for basic signal processing tasks.

Reliable I/O expander. Works well in embedded control applications.

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

Write a Review

Shipment

Delivery Time

Delivery Cost

Delivery Method

QC (Quality Warranty)

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Packaging

Electrostatic Discharge Protection and Handling

Certifications & Memberships

PIC16F876T-20/SO

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Please refer to the English Version as our Official Version.