PIC16F689T-I/SO Tech Specifications
Microchip - PIC16F689T-I/SO technical specifications, attributes, parameters and parts with similar specifications to Microchip - PIC16F689T-I/SO

Product Attribute	Attribute Value
Part Number	PIC16F689T-I/SO
Package	SOIC-20
Description	SOIC-20
Stock Condition	Get 13030 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

Frequently Asked Questions(FAQ)

How does the PIC16F689T-I/SO handle brown-out detection and reset functionality in low-voltage applications, and what are its typical power consumption characteristics during active versus sleep modes?: The PIC16F689T-I/SO includes an integrated Brown-Out Detect (BOD) feature that monitors the supply voltage and triggers a reset if Vdd falls below approximately 2.0V, ensuring system stability during voltage transients. This is particularly valuable in battery-powered designs where undervoltage conditions could corrupt data or cause unpredictable behavior. During normal operation at 5V and 4MHz, the device consumes around 1.5mA, while in Sleep mode it draws only about 30µA, making it suitable for energy-efficient embedded systems. The combination of BOD and low sleep current enables reliable long-life deployments without frequent maintenance.

In what ways can the PIC16F689T-I/SO interface with external sensors using its analog peripherals, and how should ADC sampling be configured for optimal accuracy given its 10-bit resolution and internal reference options?: The PIC16F689T-I/SO features 12 analog-to-digital converter (ADC) channels with 10-bit resolution, allowing direct connection to resistive sensors such as thermistors, potentiometers, and pressure transducers without requiring external amplifiers. It supports both internal voltage references (typically 1.024V or 2.048V) and external references, enabling flexibility depending on required precision. For best accuracy, users should sample with a ≥10µs acquisition time, disable digital input buffers during conversion, and use averaging when measuring noisy signals. At 5V supply, the ADC achieves ±1 LSB integral nonlinearity, which suffices for most industrial control and monitoring applications.

When selecting between the PIC16F689T-I/SO and similar 8-bit MCUs like the PIC16F18326, what key architectural differences impact real-time performance and peripheral integration for I²C-based sensor networks?: While both devices offer comparable core speeds, the PIC16F689T-I/SO uses a legacy Harvard architecture with separate program and data buses, whereas the PIC16F18326 employs a modified Harvard design with enhanced instruction execution efficiency. More critically, the F18326 includes dedicated hardware for advanced analog front ends and higher-speed I²C (up to 1 Mbps), making it preferable for high-frequency sensor polling. Conversely, the F689’s simpler peripheral set and lower cost make it more appropriate for basic I²C sensor arrays where timing constraints are relaxed—ideal for temperature or humidity monitoring in HVAC systems.

What considerations apply when using the PIC16F689T-I/SO in automotive environments subject to wide temperature fluctuations, and how does its operating range compare to industrial-grade alternatives?: The PIC16F689T-I/SO operates from -40°C to +85°C, aligning with standard industrial specifications but falling short of AEC-Q100 qualified parts used in demanding automotive applications. Its internal oscillator maintains ±1% frequency stability over this range, though external crystals may drift beyond specification under thermal stress. For engine control modules or lighting systems requiring extended reliability, engineers often pair it with additional thermal management or opt for automotive-certified variants like the PIC16F15386. However, for non-safety-critical subsystems such as dashboard displays or cabin climate controls, the F689 provides sufficient robustness with minimal redesign effort.

Can the PIC16F689T-I/SO support USB communication natively, or must external components be added to enable host or device functionality?: No, the PIC16F689T-I/SO does not include native USB support. It lacks a USB transceiver block and requires external USB-to-serial bridge chips such as FTDI’s FT232RL or Microchip’s MCP2221A for USB connectivity. Engineers seeking integrated USB should consider the PIC16F1847 family instead. The F689’s UART/USART peripheral remains useful for serial debugging over RS-232 or TTL links, but true USB compliance demands additional circuitry, increasing board space and bill-of-materials complexity.

How does the flash memory organization of the PIC16F689T-I/SO influence firmware development practices, especially regarding erase/write cycles and bootloader implementation?: The PIC16F689T-I/SO contains 7KB of flash memory organized as 4K x 14 bits, meaning each instruction word occupies two bytes. Flash endurance is rated for 10,000 write cycles per sector, so applications frequently updating code regions require wear-leveling techniques or relocation to EEPROM (which offers ~4 million cycles). Bootloaders typically reserve the first 512 bytes for vector tables and interrupt handling, leaving ~6.5KB for user application code. Given the limited RAM (256 bytes), developers must optimize variable usage to avoid stack overflow during flash programming operations triggered via ICSP.

What trade-offs exist between using the internal oscillator versus an external crystal on the PIC16F689T-I/SO when designing clock-sensitive applications like UART baud rate generation?: The PIC16F689T-I/SO’s internal oscillator runs at 20MHz but has a tolerance of ±1%, which limits precise baud rate generation to common rates like 9600 or 115200 bps with acceptable error margins. For stricter requirements—such as 19200 or custom rates—an external 4–20MHz crystal improves accuracy to <0.1%. However, adding a crystal increases component count, power, and PCB layout complexity due to load capacitance matching. Most consumer electronics accept the internal oscillator’s limitations, but industrial instrumentation or communication modules often mandate external timing sources for regulatory compliance and interoperability.

How should decoupling capacitors be sized and placed near the PIC16F689T-I/SO to ensure stable operation under rapid GPIO switching, and what impact does poor power integrity have on ADC measurements?: Place 100nF ceramic capacitors as close as possible to each Vdd and Vss pin (preferably within 5mm), supplemented by a bulk 10µF tantalum or ceramic capacitor near the power entry point. These mitigate high-frequency noise from switching loads and prevent voltage dips during GPIO transitions. Poor decoupling can introduce jitter in the internal oscillator and elevate ADC noise floor by 1–2 LSBs, degrading measurement resolution. In noisy environments, adding ferrite beads or RC filters further isolates digital switching artifacts from analog sections, preserving ADC linearity and reducing spurious readings in precision sensing loops.

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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.

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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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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

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Certifications & Memberships

Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

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PIC16F689T-I/SO

Microchip
41D-PIC16F689T-I/SO

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PIC16F689T-I/SO - Microchip

Specifications

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.