Circuitos Integrados

PIC16F685-I/SS

PIC16F685-I/SS - 20MHz 8-bit Flash MCU 7KB | Microchip

The Microchip Technology PIC16F685-I/SS is a 20 MHz, 8-bit flash-based CMOS microcontroller from the PIC16F mid-range family, delivering 7 KB (4K x 14) of program memory and 256 bytes of RAM in a 20-pin SSOP package. It integrates nanoWatt power management, an analog-to-digital converter, comparators, and a wide 2.0-5.5 V operating range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (flash), working RAM, and programmable peripherals (ADC, timers, communication ports). Microcontrollers belong to the broader class of embedded processors, which sit within the integrated circuit (IC) hierarchy of semiconductors. The PIC16F685 uses Microchip's mid-range 14-bit instruction architecture, recognized for its 35-instruction RISC core that simplifies firmware development while delivering deterministic 200 ns instruction execution. Key features include 11 I/O pins supporting capacitive-touch sensing via the mTouch peripheral, an internal 8 MHz oscillator, a 12-bit ADC with up to 12 channels, dual comparators, an enhanced PWM module, and an on-chip 256-byte EEPROM for non-volatile data storage. The nanoWatt technology suite provides multiple low-power sleep modes that drop supply current to the low microamp range, making the device attractive for battery-powered or energy-harvesting designs. Architecturally, the PIC16F685 combines a Harvard bus structure with separate program and data paths, a hardware multiplier, and an interrupt controller with 11 sources. The 20-pin SSOP package with industrial temperature grade (-40 C to +85 C) is suitable for compact PCB layouts and reflow soldering in volume production. The device is code-protected with Microchip's standard security fuses and supports in-circuit serial programming (ICSP) through two pins. Typical applications include consumer white goods, LED lighting controllers, sensor signal conditioning, battery chargers, capacitive touch user interfaces, small motor control loops, and low-cost industrial sensor nodes. Its combination of ADC, comparators, PWM and nanoWatt sleep makes it a strong fit for mixed-signal front ends. When designing with this part, plan the ICSP connections early so the ICSP header does not interfere with the application circuit. Decouple VDD with a 100 nF ceramic placed within 5 mm of the pin, and configure the configuration bits in source code so they remain under version control. This page consolidates distributor pricing, drop-in alternatives, and engineering design notes not provided in the manufacturer datasheet alone.

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PIC16F685T-I/ML

PIC16F685T-I/ML - 20MHz 8-Bit Flash MCU, 20-QFN | Microchip

The Microchip Technology PIC16F685T-I/ML is an 8-bit PIC® RISC flash-based microcontroller delivering 20MHz operation with 7KB (4K x 14) of program Flash memory in a 20-pin QFN (4x4) package with exposed thermal pad. It operates from a 4.5V to 5.5V supply and integrates 256 bytes of RAM and 128 bytes of EEPROM for parameter and data storage. The device is AEC-Q100 qualified for automotive applications. A PIC microcontroller (programmable interface controller) is a family of compact, low-power microcontrollers built on a Harvard RISC architecture that separates program and data memory. Within the broader semiconductor hierarchy, PIC16F685 sits as: microcontroller -> 8-bit MCU -> PIC16 family -> mid-range x14 core. The mid-range x14 instruction set uses 14-bit program words and 35 single-word instructions, enabling powerful yet easy-to-program operation. This category of MCU is widely used in cost-sensitive embedded applications where deterministic interrupt response, low sleep current, and broad peripheral integration matter more than raw processing throughput. Key features include 12 I/O pins, 11 standard digital I/O plus dedicated peripherals, an integrated 10-bit ADC with multiple channels, capture/compare/PWM modules, an enhanced USART for asynchronous and synchronous serial communication, and a nanoWatt™ power-managed architecture with multiple low-power sleep modes. The 20MHz clock rate delivers 200ns instruction execution, and AEC-Q100 qualification makes it suitable for harsh automotive environments. The PIC16F685T-I/ML uses flash memory for program storage, supporting in-system serial programming (ICSP) via two pins, allowing in-field firmware updates without removing the part. The nanoWatt™ technology provides typical power consumption below 1µA in sleep mode, enabling battery-powered designs. The device operates across the industrial temperature range (-40°C to +85°C) and benefits from a comprehensive development ecosystem including MPLAB X IDE, MPLAB XC8 compiler, and PICkit programmers. Typical applications include automotive interior lighting control, sensor signal conditioning, low-speed sensor fusion, simple motor control (DC brushed, fan), and consumer white-goods control boards. Its small 4x4 mm QFN footprint also suits densely populated PCB designs where TSSOP/SOIC footprints are too large. When designing with this MCU, ensure the ICSP pins (RB6/RA4) have no capacitive loading that could disrupt in-system programming, and add a 100nF decoupling capacitor within 5mm of the VDD pin. The automotive -I temperature grade spans -40°C to +85°C; select the -E grade for -40°C to +125°C extended automotive range. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F685T-I/SS

PIC16F685T-I/SS - 20MHz 8-Bit MCU 7KB Flash 18 I/O | Microchip

The Microchip Technology PIC16F685T-I/SS is an 8-bit PIC16-family RISC flash microcontroller running at up to 20MHz, integrating 7KB (4K x 14 words) of Flash program memory, 256 bytes of SRAM, and 256 bytes of data EEPROM, all in a 20-pin SSOP (5.30mm body) surface-mount package. It operates from 2.0V to 5.5V across the industrial -40C to +85C range and exposes up to 18 general-purpose digital I/O pins, making it one of the highest-I/O-density options in the 20-pin PIC16F6xx low-pin-count family. A PIC microcontroller (peripheral interface controller) is a compact, deterministic Harvard-architecture processor that integrates CPU, non-volatile program memory, RAM, EEPROM, timers, ADC, and digital peripherals on a single CMOS die. PIC16-series parts sit in Microchip's mid-range x14 instruction category (14-bit wide instruction words, 35 single-word instructions), positioned between the baseline 8-bit PIC10/12/16 families and the high-end PIC18 devices. They are widely used in cost-sensitive embedded designs where predictable interrupt latency and long-term firmware stability matter more than raw compute throughput. Key features of the PIC16F685T-I/SS include an internal 8MHz/32kHz oscillator with PLL option, a 10-bit ADC with up to 12 channels, two analog comparators with a programmable reference, three timers (Timer0/Timer1/Timer2), a hardware USART/SCI interface, an MSSP module supporting SPI and I2C (master/slave), an on-chip 8-bit voltage reference, and a 16-level deep hardware stack. The enhanced mid-range core delivers 200ns instruction execution at 20MHz (5 MIPS) while consuming roughly 11mA active at 5V/20MHz and dropping into the nanoamp range in sleep mode. Architecturally, the PIC16F685 combines a 14-bit instruction pipeline with a separate 8-bit data path, allowing Flash and EEPROM to be read in parallel and supporting self-programming under firmware control. Brown-out reset, power-on reset, watchdog timer with on-chip low-power oscillator, and a configurable MCLR pin give the part strong resilience in industrial and consumer environments. Code protection bits and an ICD (in-circuit debugger) header complete the development flow. Typical applications include white-good control boards, sensor conditioning and front ends, LED driver and lighting controllers, small appliance user interfaces, battery chargers, smoke and CO detector signal chains, fan and pump control, and remote-control transmitters. Its 18 I/O count in a 20-pin package leaves only two pins for power, maximizing GPIO for keypads, displays, and sensors. When designing with this part, budget the ADC acquisition time against the chosen clock prescaler and place a 0.1uF decoupling capacitor directly across VDD/VSS as close to the pins as possible; a 10uF bulk cap on the board supply rail is also recommended for noisy environments. This page synthesizes distributor pricing, drop-in same-package alternatives, comparison data and practical design notes not found in the manufacturer datasheet alone.

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PIC16F687-E/ML

PIC16F687-E/ML - 8-bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F687-E/ML is a low pin-count (20-pin) PIC16 family 8-bit flash microcontroller based on the mid-range x14 RISC architecture, delivering 20MHz (5 MIPS) CPU performance with 3.5KB (2K x 14) of self-programmable Flash program memory and 128 bytes of SRAM plus 256 bytes of EEPROM, packaged in a 20-lead QFN (4x4 mm) with an exposed thermal pad. An 8-bit flash microcontroller is a small single-chip computer built around an 8-bit data path with non-volatile Flash program memory that can be rewritten thousands of times. The PIC16F687 belongs to the broader hierarchy: microcontroller -> embedded MCU -> semiconductor -> integrated circuit. Within Microchip's portfolio, the PIC16 family sits between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families, optimized for cost-sensitive, low-power, moderate-performance applications. The 'nanoWatt' technology reference in its product page indicates use of Microchip's low-power process enhancements, including multiple sleep modes and dynamic oscillator switching. Key features include 11 I/O pins supporting digital I/O, ADC input, comparator input, and PWM output; a 10-bit ADC with up to 12 channels; two analog comparators; one Enhanced Capture/Compare/PWM (ECCP) module and one Capture/Compare/PWM (CCP) module; an EUSART module for serial communication; and a 2.0V to 5.5V wide operating voltage range. The 20MHz internal oscillator eliminates the need for an external crystal in many designs. The 'E' suffix denotes the Extended temperature grade (-40C to +125C). Architecturally, the device uses a Harvard-style separate code and data bus, 14-bit instruction width, 35 single-word instructions, and an 8-level deep hardware stack. The mid-range core executes one instruction per four clock cycles, yielding 200ns instruction time at 20MHz. The 4x4 mm QFN package with exposed pad provides a compact footprint and low thermal resistance suitable for dense PCB layouts. Typical applications include low-cost sensor interfaces, small motor controls, LED lighting controllers, battery chargers, smoke detectors, remote controls, consumer appliances, and industrial control modules where 8-bit performance and small footprint outweigh raw MIPS. The PIC16F687 also supports in-circuit serial programming (ICSP) and in-circuit debugging via two I/O lines. When designing with this part, allocate the RA0/RA1 pins for ICSP/ICD if in-field firmware updates are required. Decouple VDD with a 100nF ceramic capacitor placed within 3mm of the package, and tie the exposed thermal pad to GND for optimal thermal and electrical performance. Choose the 'I' (Industrial, -40C to +85C) variant if extended temperature is not needed to reduce unit cost. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F687-E/P

PIC16F687-E/P - 8-Bit 20MHz Flash MCU | Microchip | Embedded Control

The Microchip Technology PIC16F687-E/P is an 8-bit PIC16 RISC flash microcontroller operating at up to 20 MHz, with 3.5 KB of flash program memory organized as 2K × 14 words, 11 I/O ports, and a 20-pin PDIP package. The device belongs to Microchip's low-pin-count PIC16 family and combines in-system programmable flash memory with CMOS operation and nanoWatt technology. A microcontroller is a programmable integrated circuit used to execute embedded control logic. In the product hierarchy, the PIC16F687-E/P is an 8-bit RISC microcontroller, a member of the PIC16 family, and a semiconductor within the broader embedded-processing and industrial-control categories. Its role is to read inputs, execute firmware, update outputs, and manage connected peripherals without requiring a separate processor for small control tasks. Key features include a 20 MHz maximum clock speed, 3.5 KB of flash program memory, onboard EEPROM data memory, and a broad 2.0 V to 5.5 V operating-voltage range for the PIC16F687 family. The 11 available I/O pins support digital control and communication functions, while the in-system programming architecture allows firmware to be programmed and updated through the device programming interface. The PIC16F687-E/P uses the mid-range x14 architecture rather than a high-end processor architecture. Its program memory provides 2K × 14 words, allowing relatively compact firmware to control sensors, actuators, indicators, and communication peripherals. The CMOS implementation and nanoWatt technology identify the device as intended for low-power embedded operation, although exact sleep-mode and active-current figures require confirmation from the manufacturer datasheet. Typical applications include industrial control modules, building equipment, appliance controllers, instrumentation, small motor-control systems, and embedded sensing nodes. Its 20-pin PDIP package supports conventional through-hole assembly and prototyping, while the 20 MHz operating speed provides sufficient execution capability for real-time control, debouncing, state management, and serial peripheral coordination. Designers should confirm the complete electrical limits, oscillator options, peripheral configuration, and programming requirements before release to production. Particular attention should be paid to decoupling, oscillator layout, reset behavior, and the voltage requirements of attached peripherals because those implementation details determine whether the controller operates reliably beyond its headline 20 MHz specification. This product page consolidates the verified manufacturer and distributor data into a specification summary, practical application guidance, a complete 20-pin assignment, and same-package drop-in alternatives. It is intended to support engineering selection and sourcing decisions without substituting unverified values for parameters that require review of the manufacturer datasheet.

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PIC16F687-E/SO

PIC16F687-E/SO - 8-bit MCU, 3.5KB Flash, 20MHz, SOIC-20

The Microchip PIC16F687-E/SO is an 8-bit RISC flash microcontroller in the mid-range PIC16 family, packaged in a 20-pin SOIC (SO) wide-body IC package. It integrates 3.5 KB of self-programmable flash program memory, 128 bytes of SRAM, 256 bytes of EEPROM data memory, and an 8 MHz internal oscillator (extendable to 20 MHz with an external crystal). The device offers 18 digital I/O pins capable of driving LEDs directly, plus 12 channels of 10-bit analog-to-digital conversion for sensor acquisition and analog signal conditioning. A microcontroller (MCU) is a single-chip computer that combines a CPU, program memory, working RAM, non-volatile data storage, and programmable I/O peripherals on one silicon die. The PIC16 family uses a modified Harvard RISC core with only 35 single-word instructions and a 200 ns instruction cycle at 20 MHz, which gives it deterministic interrupt latency and predictable code execution - qualities that distinguish PIC mid-range devices from complex instruction-set (CISC) 8-bit MCUs and from Cortex-M0/M0+ 32-bit MCUs. PIC16 devices sit in the broader taxonomy: MCU -> 8-bit MCU -> RISC MCU -> flash MCU -> mid-range PIC -> PIC16Fxxx family. Key specifications include a 2.0 V to 5.5 V wide operating voltage range (the "-E" suffix denotes the Extended industrial temperature grade of -40C to +125C), on-chip nanoWatt power management with multiple idle/sleep modes, and a 10-bit ADC with up to 12 input channels. Peripherals include one Enhanced USART, one MSSP (master SPI or I2C), one 8-bit and one 16-bit timer, and a capture/compare/PWM (CCP) module. The 20 MHz RISC engine executes one instruction per 200 ns cycle, while the nanoWatt technology cuts sleep current below 1 uA for battery-backed and energy-harvesting designs. The 256-byte EEPROM supports 1M erase/write cycles typical and 40-year retention - useful for storing calibration constants, user settings, or runtime counters without external memory. Typical applications include battery-powered sensor nodes, low-end consumer appliance controls, automotive body modules (under 125C), industrial sensor signal conditioning with ADC, LED lighting controllers with PWM dimming, and simple user-interface boards with button/switch inputs and indicator LEDs. The wide Vdd range simplifies designs powered from 2x AA cells, USB, or 5 V rails. When designing with this part, place a 100 nF decoupling capacitor as close as possible to Vdd, and add a 10 uF bulk capacitor near the IC if the supply traces are longer than 25 mm. Leave the MCLR pin pulled high through a 10 kohm resistor unless external reset control is needed; the device does not require an external crystal if the internal 8 MHz oscillator is acceptable for the timing budget. This page synthesizes distributor pricing, same-family alternatives, and practical design notes not found in a single manufacturer datasheet, helping engineers accelerate the PIC16F687-E/SO selection, sourcing, and board bring-up.

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PIC16F687-E/SS

PIC16F687-E/SS - 20MHz 8-bit MCU 3.5KB Flash | Microchip

The Microchip Technology PIC16F687-E/SS is an 8-bit CMOS flash microcontroller built on the mid-range PIC16 x14 instruction architecture, offering 3.5KB (2K x 14 words) of program flash, 128 bytes of RAM and 256 bytes of EEPROM data memory in a 20-pin SSOP package. Operating from a 2.0V to 5.5V supply, the device runs up to 20 MHz instruction clock (200 ns instruction cycle) and exposes 18 digital I/O pins with nanoWatt power-management modes for low-power embedded designs. The PIC16F687 integrates a 10-bit ADC, two analog comparators, one Enhanced USART, an MSSP module supporting SPI and I2C (master/slave), three timers (Timer0, Timer1, Timer2) and 256 bytes of EEPROM, all inside a 20-pin SSOP with 0.209-inch (5.30 mm) body width. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, working RAM, and peripheral interfaces such as timers, ADC, and communication blocks. The PIC16F687 belongs to the mid-range 8-bit MCU category, positioned between baseline PIC10/12/16 devices and enhanced mid-range PIC16F1xxx parts. Within the broader taxonomy, it sits under embedded controller -> microcontroller -> 8-bit MCU -> flash-based MCU -> nanoWatt technology family. The PIC16F687 is widely used where low pin count, integrated EEPROM, and nanoWatt sleep current (<1 µA typical) make it attractive for battery-powered and portable designs. Key features include the nanoWatt low-power architecture that drops supply current below 1 µA in Sleep mode, internal 8 MHz oscillator with software-tunable calibration, and on-board In-Circuit Serial Programming (ICSP) plus In-Circuit Debug (ICD) for development. The Enhanced USART block supports RS-232/RS-485 LIN master operation, while the MSSP port delivers SPI up to 5 MHz and I2C master/slave with 7-bit/10-bit addressing. The integrated 12-channel (8 external + internal) 10-bit ADC provides fast analog sampling for sensor interfaces, and the two analog comparators enable precise threshold detection without external components. The device uses Harvard architecture with separate program and data buses, an 8-bit ALU and a hardware stack depth of 8 levels, and supports interrupts with context save/restore. The 35 single-word instruction set keeps firmware compact, and the C-compiler-friendly architecture allows efficient code generation with MPLAB XC8. The flash program memory supports up to 100,000 erase/write cycles and EEPROM supports 1,000,000 erase/write cycles, both retaining data for 40+ years. Typical applications include consumer white-goods and appliance controls, industrial sensor nodes and data loggers, battery-powered remote controls and metering, automotive interior accessories (non-safety), low-cost HVAC fan and thermostat controls, and standalone 8-bit controller boards replacing discrete logic. The wide 2.0-5.5V operating range lets it ride directly on 2xAA alkaline, lithium coin-cell, or 3.3V/5V regulated rails. When designing with this MCU, place 100 nF decoupling capacitors on every VDD pin as close to the package as possible and add a 10 µF bulk capacitor near the supply entry. The MCLR pin must be tied to VDD through a 10 kΩ resistor for normal operation, and unused I/O pins should be configured as outputs low to minimize sleep current. Programming is performed via ICSP using MPLAB X IDE and MPLAB XC8 compiler. This page synthesizes distributor pricing as of 2026-09-21, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting faster vendor selection and PCB rework decisions.

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PIC16F687-I/P

PIC16F687-I/P - 20MHz 8-Bit Flash MCU | Microchip

The Microchip Technology PIC16F687-I/P is a 20 MHz, 8-bit PIC Flash microcontroller with 3.5 KB of program memory, 128 bytes of RAM, and 18 I/O pins in a 20-pin through-hole DIP package. According to the provided distributor data, the device is an 8-bit CMOS Flash MCU with 20 MHz maximum clock speed and a 20-PDIP package. A PIC16F-series microcontroller combines a reduced-instruction-computing core, programmable Flash memory, RAM, EEPROM data memory, and digital peripherals in one device. The PIC16F687 belongs to Microchip's mid-range PIC family, where the architecture provides simple programming, deterministic peripheral operation, and a compact platform for embedded control. Its stated 2.0-5.5 V operating-voltage range supports low-voltage embedded systems. The MCU provides 3.5 KB of Flash memory, 128 bytes of RAM, and 18 I/O pins, making it suitable for control, sensing, communication, and small automation tasks. The provided sources identify the part as a 20-pin Flash-based, 8-bit CMOS microcontroller and describe its operating voltage as 2.0-5.5 V. Some distributor snippets specify 4.5-5.5 V for a related operating specification, so the applicable supply limits should be confirmed against the manufacturer datasheet for the exact operating mode. PIC16F687-I/P is identified in the supplied data as an active lifecycle part. The -I designation indicates the industrial temperature-grade ordering variant, while /P denotes the plastic through-hole package format. Because the provided search results do not include a complete verified pinout, electrical timing table, peripheral inventory, or lifecycle statement from the manufacturer page, those values remain marked as data needed rather than being inferred. Typical applications include compact industrial controllers, sensor nodes, simple motor-control interfaces, instrumentation, and low-power embedded systems. Its 18 I/O pins can support digital inputs, outputs, and multiplexed peripheral functions when the device is operated within the limits defined by the datasheet. Programming requires the appropriate PIC programmer and firmware configuration for clock, peripherals, and I/O assignments. For PCB design, use the manufacturer pinout and package drawing rather than the abbreviated distributor descriptions. Confirm oscillator requirements, decoupling, programming connections, and the intended I/O mapping before layout release. When sourcing, compare the exact -I/P ordering code rather than relying only on the base PIC16F687 name, because package and temperature variants can have different ordering suffixes.

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PIC16F687-I/SO

PIC16F687-I/SO - 8-Bit 20MHz Flash PIC MCU, 20-SOIC | Microchip Technology

The Microchip Technology PIC16F687-I/SO is an 8-bit flash-based CMOS PIC mid-range microcontroller that runs at up to 20 MHz, with 3.5 KB of flash program memory (2K x 14 words), 128 bytes of on-board EEPROM data memory and 18 I/O lines, all housed in a 20-pin SOIC surface-mount package. What is an 8-bit microcontroller? A microcontroller is a single integrated circuit that bundles a CPU core, program memory, data memory, and peripherals onto one die, forming the heart of an embedded control system. An 8-bit MCU means its ALU and data path process 8 bits per instruction cycle. Within the Microchip portfolio, the PIC16F687 sits in the mid-range PIC16 family, which uses the well-established 14-bit "x14" RISC-like instruction set and is positioned above the baseline 8-bit PIC parts in both memory and peripheral capability. Key features of the PIC16F687-I/SO include a 20 MHz maximum instruction clock, a wide 2.0 V to 5.5 V operating supply range, 128 x 8 general purpose registers, on-board EEPROM for non-volatile parameter storage, and nanoWatt technology that adds software-controlled peripheral shutdown to cut supply current in idle states. Because the device is Flash-based, the firmware can be re-programmed in circuit, and because it is EEPROM-equipped, calibration and configuration data survive power cycles without external memory. Technically, the PIC16F687 belongs to the PIC16F631/677/685/687/689/690 family documented in Microchip datasheet 40001262F, where the register file is organized as 128 x 8 in the PIC16F687. The core executes 35 single-word instructions with 200 ns instruction execution time, while on-board oscillators, timers, comparators, and serial peripherals reduce the external component count in cost-sensitive control designs. Typical applications include small motor and relay control panels, appliance user interfaces, battery-backed industrial sensors, HVAC and thermostat controllers, LED lighting sequencers, and simple standalone data loggers where a full 32-bit MCU would add unnecessary cost and board area. A key design consideration is decoupling and brownout behavior: place the supply bypass capacitor close to the VDD pin, respect the 2.0 V to 5.5 V limit, and confirm that brown-out reset settings in the configuration words match the minimum rail your board sees during brownout events. This page combines the Microchip family datasheet, verified distributor listings, drop-in replacement analysis, and hands-on design notes so you can qualify the PIC16F687-I/SO for a new design without rebuilding the information from scratch.

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PIC16F687-I/SS

PIC16F687-I/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F687-I/SS is an 8-bit Flash-based CMOS microcontroller in the PIC16 mid-range family, featuring 3.5KB (2K x 14) of program Flash, 128 bytes of EEPROM data memory, and 256 bytes of SRAM. It executes instructions at 20 MHz with a 200 ns instruction cycle, housed in a 20-pin SSOP package. The device operates across 2.0V to 5.5V, integrating nanoWatt power management for ultra-low standby currents. A microcontroller (MCU) is a single-chip computer that contains a CPU, memory (Flash for program code, RAM for data, EEPROM for non-volatile data), and configurable I/O peripherals. PIC16 mid-range MCUs use a Harvard RISC architecture with only 35 single-word instructions, enabling compact code generation and predictable timing. The PIC16F687 sits in the low-pin-count (20-pin) PIC16F subfamily, targeting cost-sensitive embedded applications that need more analog and communication peripherals than entry-level PIC10/12/14 devices. Key specifications include 18 digital I/O pins, an internal 8 MHz oscillator (factory calibrated to ±1%), an 8-channel 10-bit ADC, two analog comparators, a USART for asynchronous serial, an MSSP for SPI/I2C, and 2 capture/compare/PWM modules. The nanoWatt technology provides multiple low-power modes with currents under 1 µA in sleep, and the wide 2.0V-5.5V supply range supports both 3.3V and 5V designs directly. The architecture uses a 14-bit instruction word with a hardware multiplier-free pipeline and a single-cycle oscillator startup. Self-programmability under software control, in-circuit debugging via ICD, and 100K erase/write cycle Flash endurance make it a robust platform for long-life embedded products. Typical applications include consumer appliance control, sensor signal conditioning nodes, low-end remote controls, battery-powered instrumentation, LED lighting controllers, and industrial sensor front-ends. The combination of EEPROM, ADC, comparators, and serial interfaces makes it well suited as a turnkey 8-bit controller with minimal external components. When designing, place a 100 nF decoupling capacitor within 5 mm of VDD, and use the internal oscillator configuration when crystal accuracy is not required to free two I/O pins. For noisy environments, enable the hardware watchdog timer and configure unused pins as outputs low to minimize current leakage. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an engineer-ready profile of the PIC16F687-I/SS.

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PIC16F687T-I/ML

PIC16F687T-I/ML - 8-Bit 20MHz 3.5KB Flash MCU, 20-QFN | Microchip

The Microchip Technology PIC16F687T-I/ML is a low pin-count (20-pin) PIC Flash 8-bit microcontroller built on the mid-range x14 architecture, delivering 20 MHz CPU performance, 3.5 KB of program Flash, 128 bytes of RAM, and 256 bytes of EEPROM data memory in a 20-pin QFN (ML) package with exposed pad. It operates across a wide 2.0 V to 5.5 V supply range, supports in-circuit serial programming (ICSP) via two pins, and provides 18 general-purpose I/O lines arranged across multiple ports with individual direction control. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), non-volatile data memory (EEPROM), and a rich set of peripheral interfaces such as timers, ADC, comparators, and serial ports onto one silicon die. Within the broader power-management and embedded-control taxonomy, an 8-bit MCU sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16F687T-I/ML belongs to the PIC16 mid-range family, which uses a 14-bit instruction word, nanoWatt Technology for low-power sleep modes, and standardized peripherals shared across the family for code portability. Key features of this device include an enhanced USART module supporting RS-232/RS-485, a master synchronous serial port (MSSP) for SPI and I2C master/slave operation, an enhanced capture/compare/PWM (ECCP) module, two analog comparators with an internal bandgap reference, a 10-bit ADC with up to 12 channels, and four timer modules (Timer0, Timer1, Timer2, and Watchdog Timer). nanoWatt Technology provides multiple idle/sleep current modes as low as 50 nA typical at 2 V, enabling battery-backed or energy-harvesting designs. The device also includes a wide operating voltage range (2.0 V to 5.5 V) and an internal 8 MHz oscillator with PLL option for flexible clocking without external crystals. Architecturally, the mid-range x14 core delivers deterministic 200 ns instruction cycle at 20 MHz, with a hardware stack depth of 8 levels and 35 instructions including bit-oriented operations. The internal RC oscillator with software-selectable frequencies (31 kHz to 8 MHz) plus 4x PLL enables designers to balance power consumption against timing accuracy. The 256-byte EEPROM supports byte-level endurance of 1,000,000 erase/write cycles, which is well above typical MCU expectations. Typical applications include low-cost battery-powered sensor nodes, appliance control boards (washing machines, coffee makers), industrial automation peripherals (sensor hubs, motor-control daughter cards), automotive body electronics (interior lighting, seat controllers), low-end consumer electronics (remote controls, toys), and compact IoT edge devices using I2C or SPI peripherals. The combination of nanoWatt Technology, wide supply range, and 18 I/O pins makes the PIC16F687T-I/ML ideal for cost-sensitive designs that still need analog integration. A critical design consideration is selecting the correct oscillator configuration in the configuration word (CONFIG) - designers must choose between internal RC, external crystal, or external clock mode based on accuracy and power needs. Another consideration is the exposed thermal pad (EP) on the QFN package, which must be soldered to a sufficient copper pour for thermal dissipation and ground continuity to meet the rated current capability per pin. This page synthesizes distributor pricing, drop-in package alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16F687T-I/SO

PIC16F687T-I/SO - 20MHz 8-bit MCU 3.5KB Flash | Microchip

The Microchip Technology PIC16F687T-I/SO is a 20 MHz 8-bit CMOS flash-based microcontroller built on the mid-range PIC16 x14 architecture and supplied in a 20-pin SOIC package on tape-and-reel. It integrates 3.5 KB (2K x 14 words) of flash program memory, 128 bytes of SRAM, and 256 bytes of EEPROM data memory, delivering a balanced mix of code density, peripheral integration, and nanoWatt power management for general-purpose embedded designs. A microcontroller (MCU) is a single-chip computer that contains a CPU core, program and data memory, peripherals, and I/O - integrating everything required to read sensors, drive actuators, and run application firmware without external logic. The PIC16F687 sits in the broader hierarchy MCU -> 8-bit microcontroller -> PIC16 family -> mid-range x14 core -> flash-based device -> semiconductor, a category pioneered by Microchip and still dominant in cost-sensitive and low-power applications. Headline specifications include an operating voltage range of 2.0 V to 5.5 V, 18 digital I/O pins across multiple interrupt-on-change capable ports, an internal 8 MHz oscillator with PLL options, an enhanced USART, MSSP for SPI/I2C, a 12-channel 10-bit ADC, two analog comparators, three timers, and nanoWatt sleep modes with currents measured in nanoamps. The 20 MHz clock rate yields a 200 ns instruction cycle supporting deterministic real-time control. The device targets applications that demand a small footprint, deterministic response, and ultra-low standby power - sensor nodes, white-goods control boards, battery chargers, and appliance human-machine interfaces. The PIC16F687T-I/SO suffix 'T' indicates tape-and-reel packaging for high-volume SMT assembly, and 'I' denotes the industrial -40C to +85C operating temperature range. The 'SO' suffix identifies the 300-mil SOIC-20 outline. When designing in, place a 100 nF decoupling capacitor within 5 mm of VDD and a 10 uF bulk capacitor near the supply entry. Reserve the MCLR pin with its standard 10 kohm pull-up configuration unless using internal configurations, and confirm the ICSP programming footprint is accessible for production-line firmware update. This page synthesizes distributor pricing, drop-in package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F688-E/ML

PIC16F688-E/ML - 14-Pin 8-bit Flash MCU 20MHz | Microchip

The Microchip PIC16F688-E/ML is a 14-pin Flash-based 8-bit CMOS microcontroller from the mid-range PIC16 family, offering 7KB of Flash program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory in a 4x4 mm QFN (ML) surface-mount package. The device runs at up to 20 MHz instruction clock, executes instructions in 200 ns, and operates across a 2.0V to 5.5V supply range, making it well suited to battery-powered and 5V embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile working memory (RAM), non-volatile data memory (EEPROM), and a set of on-chip peripherals. PIC microcontrollers use a RISC-based Harvard architecture with only 35 single-word instructions, giving deterministic timing and easy assembly programming. The mid-range PIC16 line sits between the baseline PIC10/12/16 families and the enhanced PIC18 family, balancing cost, peripheral count, and code density. Key features of the PIC16F688-E/ML include 12 I/O pins, a 10-bit ADC with up to 8 channels, two 8-bit timers plus one 16-bit timer, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), and an on-chip voltage reference. The device also integrates nanoWatt power management, supporting multiple low-power sleep modes with wake-up on interrupt, which is critical for battery-powered and energy-harvesting products. The part is offered in industrial (-40C to +85C) and extended (-40C to +125C) temperature grades - the -E/ML suffix denotes the extended temperature range. The QFN-16 style 4x4 mm ML package provides a small PCB footprint for space-constrained designs. A Microchip newer-device notification indicates the PIC16F18325 is a recommended migration path for new designs. Typical applications include consumer appliances, sensor signal conditioning, low-cost motor control, battery chargers, LED lighting controllers, and remote sensor nodes. The wide voltage range and integrated ADC and USART peripherals reduce external component count and BOM cost. When designing with this part, allocate the GP3 pin carefully because it functions as both an input-only pin and the MCLR reset, depending on configuration bit settings.

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PIC16F688-E/P

PIC16F688-E/P - 20MHz 8-Bit Flash MCU | Microchip Technology

Microchip Technology PIC16F688-E/P is an 8-bit PIC16 flash microcontroller rated up to 20 MHz, with 7 KB of flash program memory, 256 bytes of RAM, and 12 I/O pins in a 14-pin PDIP package. It operates from 2.0 V to 5.5 V and provides a 10-bit ADC, on-board EEPROM data memory, and integrated nanoWatt technology for low-power embedded designs. A microcontroller is a programmable integrated circuit that combines a CPU core, memory, I/O ports, and peripherals on one device. The PIC16F688 belongs to the PIC16 family of 8-bit RISC microcontrollers and is positioned as a low-pin-count solution for compact control systems. Its PIC mid-range 14-bit instruction architecture provides a practical balance between processing capability, program memory, and component cost. The verified specifications identify 7 KB of flash memory organized as 4K × 14 words, 256 bytes of SRAM, and a maximum clock frequency of 20 MHz. Twelve I/O pins provide flexible connections for digital control, while the 10-bit ADC supports analog measurement. The -40°C to +125°C temperature range suits industrial equipment, consumer controls, and temperature-variable environments when appropriately qualified. PIC16F688-E/P is packaged in a through-hole 14-pin PDIP format, easing breadboard prototyping, legacy PCB reuse, hand assembly, and inspection. The -E speed-grade designation differentiates it from the standard -I grade, while /P identifies the PDIP package. Its 2.0 V to 5.5 V supply range allows use in systems operating from regulated 2.0 V, 3.3 V, or 5 V rails. Typical uses include temperature controllers, small motor-control boards, sensor interfaces, LED lighting systems, industrial timers, and compact household appliances. In these systems, the 12 I/O pins can operate external switches, indicators, relays, or sensors, while the ADC converts analog inputs into digital values for the firmware. The on-board EEPROM can retain configuration or calibration information when the required endurance is adequate. Designers should verify oscillator, reset, decoupling, and peripheral details in the Microchip datasheet before layout release. Place the supply bypass capacitor close to VDD, connect the appropriate decoupling and programming interface to MCLR/VPP, and validate unused inputs. Software must also account for the shared analog and digital functions of the I/O pins and use the documented low-power modes correctly. This page combines verified manufacturer and distributor information with pin-level guidance, application context, pricing as of 2026-10-28, and an honest assessment of replacement availability. The available data confirms a 14-pin PDIP target but does not identify five verified, same-package drop-in equivalents, so fewer alternatives are listed rather than padding the list with package-incompatible parts.

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PIC16F688-E/SL

PIC16F688-E/SL - 8-Bit 20MHz 7KB Flash MCU 14-SOIC | Microchip

The Microchip Technology PIC16F688-E/SL is an 8-bit CMOS flash microcontroller from the well-established PIC16 mid-range family, offering 7KB (4K x 14 words) of flash program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory in a 14-pin SOIC (SL) package. It executes instructions at up to 20 MHz, integrates a 10-bit Analog-to-Digital Converter (ADC) with up to 8 channels, a USART, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter, two timers, and a nanoWatt power-managed core. The device targets low pin-count embedded designs that require analog and digital peripherals in a compact package. The "E" suffix denotes the extended operating temperature range of -40C to +125C, making it suitable for industrial and harsh-environment applications, while the "/SL" suffix specifies the 14-pin narrow-body SOIC package for surface-mount assembly. A flash-based 8-bit microcontroller (MCU) is a single-chip computer that integrates CPU, non-volatile flash program memory, RAM, EEPROM, and peripheral blocks on one silicon die. The PIC16F688 belongs to Microchip's mid-range x14 instruction-set architecture, which uses a 14-bit wide instruction word optimized for code density. Flash memory allows in-circuit reprogramming via ICSP, while EEPROM provides byte-erasable non-volatile storage for user parameters. Such microcontrollers serve as the central control element in low-to-moderate complexity products where 8-bit performance is sufficient and BOM cost is critical. Key features of the PIC16F688-E/SL include: nanoWatt Technology for multiple power-saving modes (Sleep, Idle, and a low-power Timer1 oscillator), an internal 8 MHz oscillator that can free the two oscillator pins for I/O, 11 GPIO pins with individual direction and weak pull-up control, an on-chip brown-out reset (BOR) and power-on reset (POR), a 10-bit ADC with internal voltage reference, and in-circuit serial programming (ICSP) via two pins. The combination of analog integration, flexible clocking, and nanoWatt power management enables long battery life and reduced external component count. Technically, the device supports operating voltages from 2.0V to 5.5V, executes most instructions in one instruction cycle (4 clocks), and offers programmable code protection. The 14-SOIC package provides a small footprint for hand-solderable or production SMT assembly, and the extended temperature grade allows deployment in automotive, industrial, and outdoor enclosures. The PIC16F688's peripheral set is documented in the manufacturer datasheet (Microchip document 41203B) and supported by Microchip's MPLAB X IDE, XC8 compiler, and MPLAB Code Configurator. Typical applications include battery chargers, sensor interface nodes, small appliance controls, LED lighting controllers, automotive body electronics (sub-modules), and consumer device front panels. Its integrated ADC and USART are well matched to sensor readout and point-to-point wired communication. When designing with the PIC16F688-E/SL, ensure decoupling capacitors of 100 nF are placed close to VDD, follow the datasheet's ICSP pin mapping (RB6/ICSPCLK and RB7/ICSPDAT) for in-system programming, and select the oscillator mode based on power budget and timing precision. The flash endurance is rated at 100K erase/write cycles and EEPROM at 1M cycles, suitable for most field-programmable deployments. This page synthesizes distributor pricing, drop-in package alternatives from the same PIC16 family, and practical design considerations not found in the manufacturer datasheet.

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PIC16F688-I/ML

PIC16F688-I/ML - 8-Bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F688-I/ML is a 14-pin (16-pin QFN package) flash-based 8-bit CMOS microcontroller from the PIC16F family, built on Microchip's mid-range 8-bit RISC core with 35 single-word instructions and an 8-level deep hardware stack. The device executes instructions in 200 ns (5 MIPS at 20 MHz), integrates 7 KB (4K x 14 words) of self-programmable Flash program memory, 256 bytes of RAM, and 256 bytes of EEPROM data memory, and is housed in a 16-pin QFN (4 x 4 mm) package designated by the /ML suffix. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and a rich set of programmable peripherals such as timers, ADC, comparators, and communication ports. Within the broader taxonomy, the PIC16F688 belongs to the 8-bit microcontroller class, then to the mid-range PIC16F sub-family, then to Microchip's full PIC® portfolio, and ultimately to the embedded semiconductor category. The 'F' suffix denotes Flash program memory, supporting in-circuit serial programming (ICSP) and in-application re-programming. Key features include 12 I/O pins (11 digital plus 1 input-only), a 10-bit 8-channel analog-to-digital converter (ADC), an enhanced USART, a 16-bit timer/counter with capture/compare/PWM, an 8-bit timer, an enhanced 3-input comparator module with programmable reference, a 4 x 4 keypad wakeup-on-change module, an internal 8 MHz factory-calibrated (±1%) oscillator, and nanoWatt power management for sub-microamp sleep currents. The supply voltage range is 2.0 V to 5.5 V, supporting both 3.3 V and 5 V systems. The mid-range core delivers deterministic 200 ns instruction execution, 14-bit wide instruction words for compact code, and a 25 MHz maximum operating frequency. Internal oscillator calibration to ±1% eliminates external crystal cost in many designs, while the nanoWatt technology suite provides idle, sleep, and low-power Timer1 oscillator modes that drop quiescent current below 1 µA typical - ideal for battery-powered or energy-harvesting applications. Typical applications include consumer white goods and small appliances, battery chargers, LED drivers and lighting control, remote controls and IR transceivers, security and alarm sensors, low-cost instrumentation, and automotive body-electronics subsystems. The combination of integrated ADC, comparators, and PWM simplifies sensor-conditioning and closed-loop control designs without external analog ICs. When designing with the PIC16F688-I/ML, ensure the QFN thermal pad is soldered to a sufficient ground copper pour to meet thermal and electrical performance, observe the 50 MHz absolute maximum ESD rating on analog pins, and reserve the ICSPDAT/ICSPCLK pins (RB7/RB6) for in-circuit programming access. The '-I' suffix denotes the industrial -40 °C to +85 °C operating range. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16F family, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16F688-I/P

PIC16F688-I/P - 8-Bit 20MHz 7KB Flash MCU 14-PDIP | Microchip

The Microchip Technology PIC16F688-I/P is an 8-bit CMOS Flash microcontroller built on the mid-range PIC16 x14 core, delivering 20 MHz operation with 7 KB (4K x 14) of in-circuit self-programmable Flash program memory in a 14-pin PDIP through-hole package. It integrates 256 bytes SRAM, 256 bytes EEPROM, an internal 8 MHz precision oscillator, and 12 I/O pins, supporting applications that need low pin count with a rich peripheral set. The industrial temperature grade (-40C to +85C) and wide 2.0V to 5.5V operating range make it well-suited for cost-sensitive embedded control in noisy 24V-bus-derived rails as well as battery-powered nodes. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals into one package. Within the broader taxonomy, the PIC16F688 belongs to the 8-bit microcontroller family, which sits under microcontrollers, then integrated circuits (ICs), and finally semiconductors. Its role in a system is to read sensor or digital inputs, run deterministic firmware, and drive outputs such as LEDs, relays, FETs, or communication lines. The PIC16 family's standardized instruction set and broad toolchain support (MPLAB X, XC8, PICkit programmers) make it a long-lived platform in industrial, appliance, and consumer products. Key features include a hardware USART/EUSART for asynchronous serial, an MSSP module supporting SPI and I2C (both master and slave), a 10-bit ADC with 8 channels, two 8-bit timers plus one 16-bit timer, enhanced PWM/capture/compare peripherals, and nanoWatt Technology dynamic power management with multiple idle and sleep modes that drop quiescent current to under 1 uA in sleep. Technically, the device uses a 14-bit instruction word, an 8-level deep hardware stack, and direct/indirect addressing modes. The 8 MHz internal RC oscillator eliminates external crystal cost, and on-chip in-circuit debug (ICD) and program memory self-write reduce production programming cost. Typical applications include low-cost sensor nodes, LED lighting control, small appliance control boards, battery-powered instrumentation, and remote-control transmitter/receiver pairs. The wide voltage range and low sleep current also make it attractive for IoT edge devices running on coin cells or harvested energy. When designing with the PIC16F688-I/P, place a 100 nF decoupling capacitor within 5 mm of VDD and consider an MCLR pull-up of about 10 kohm with the usual diode to VDD for in-circuit programming compatibility. This page synthesizes distributor pricing, drop-in 14-pin PDIP alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F688-I/SL

PIC16F688-I/SL - 8-Bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F688-I/SL is an 8-bit PIC16F-series flash-based CMOS microcontroller with nanoWatt technology, offering 7KB (4K x 14 words) of on-chip flash program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory in a 14-pin SOIC (SL) package. It executes instructions at 20 MHz (200 ns instruction cycle), operates from 2.0 V to 5.5 V, and provides 12 digital I/O pins plus a 10-bit ADC with up to 8 channels, a USART module, and an enhanced capture/compare/PWM (ECCP) peripheral. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and programmable I/O peripherals. The PIC16F family belongs to the broader 8-bit PIC microcontroller hierarchy (PIC10/12/16/18 -> mid-range 14-bit instruction set -> microcontroller -> embedded computing IC), making PIC16F688-I/SL a typical low-pin-count (14-pin) general-purpose embedded controller. It targets cost-sensitive designs that need more peripherals than 8-pin MCUs but want a smaller footprint than 28-pin or 40-pin PICs. Key features include a wide 2.0-5.5V operating range suitable for both 3.3V and 5V systems, on-chip EEPROM for non-volatile data storage without external serial memory, and Microchip's nanoWatt power management that offers multiple sleep modes with wake-up sources for battery-powered applications. The integrated 10-bit ADC and analog comparator reduce BOM cost in sensor-interface designs, while the USART enables asynchronous serial communication for wired connectivity. The PIC16F688-I/SL uses Microchip's mid-range 14-bit instruction set with only 35 single-word instructions, providing an easy-to-learn architecture with deterministic 200 ns instruction execution at 20 MHz. Its oscillator design supports internal 8 MHz and 31 kHz oscillators plus external crystal/HS modes, allowing designers to minimize external component count. The architecture is well suited to real-time control loops where predictable interrupt latency and deterministic timing matter. Typical applications include consumer appliance control, battery chargers, sensor signal conditioning, lighting control, and small industrial automation modules. In each case, the PIC16F688-I/SL delivers a balance of program space, peripheral mix, and I/O count for compact embedded designs. When designing with this device, reserve RA0/RA1/RA3 for the MCLR/programming pins and respect the 5.5V absolute maximum supply voltage. Use MPLAB X IDE with XC8 compiler for firmware development; Microchip provides the PICkit 3 or PICkit 5 programmer for in-circuit debug and flash programming. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F688-I/ST

PIC16F688-I/ST - 8-bit 20MHz 7KB Flash MCU | Microchip TSSOP-14

The Microchip Technology PIC16F688-I/ST is a 14-pin Flash-based 8-bit CMOS microcontroller from the PIC16F family, built on Microchip's mid-range x14 RISC architecture and offering 7KB (4K x 14 words) of Flash program memory in a compact 14-TSSOP package. It executes instructions at 200 ns per cycle from a 20 MHz internal/external clock, supports 256 bytes of EEPROM data memory and 256 bytes of SRAM, and operates across a wide 2.0 V to 5.5 V supply range with nanoWatt power management for sleep currents as low as [DATA_NEEDED: typical sleep current]. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral interfaces (ADC, timers, UART, GPIO, etc.) into one IC. Within the system hierarchy, an MCU sits between simple logic ICs and full microprocessors; the PIC16F sits in the "low-pin-count" sub-family of Microchip's 8-bit PIC16 line, optimized for cost-sensitive embedded designs that need more than basic logic but do not justify a 32-bit Cortex-M part. Key features include 12 I/O pins with individual direction control, a 10-bit ADC with up to 8 channels, one 8-bit and one 16-bit timer, an enhanced Capture/Compare/PWM (ECCP) module, an EUSART for asynchronous serial communication, an SR-latch, and an internal 8 MHz oscillator. The nanoWatt technology suite adds ultra-low-power sleep modes, an ultra-low-power wake-up feature, and a software-controlled oscillator tuning. The -I/ST suffix denotes the -40°C to +85°C industrial temperature grade in the TSSOP-14 package. Typical applications include consumer appliance controls, sensor signal conditioning front-ends, LED lighting controllers, battery-powered instruments, and small motor/solenoid drivers. The wide voltage range (2.0-5.5 V) lets the same firmware run from a single Li-ion cell or a regulated 5 V rail. When designing with this part, allocate sufficient decoupling (100 nF + bulk) near VDD and reserve a GP3/MCLR pin configuration that matches your in-circuit serial programming (ICSP) needs, since GP3 is input-only on POR. This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F688T-E/SL

PIC16F688T-E/SL - 7KB Flash 8-bit MCU, SOIC-14 | Microchip

The Microchip Technology PIC16F688T-E/SL is a 14-pin, 8-bit Flash-based CMOS microcontroller built on the mid-range PIC16 x14 architecture, delivering 7KB of program Flash memory and 256 bytes of RAM in a 14-SOIC package. The part is rated for 20 MHz maximum clock speed and operates across the 2.0V to 5.5V supply range that the PIC16F688 family specifies, with the -E temperature variant covering -40C to +125C industrial/extended operation. The PIC16F688T-E/SL combines 12 I/O pins, an internal oscillator, on-chip EEPROM data memory, and Microchip's nanoWatt power management features for low-power embedded designs. A PIC microcontroller (MCU) is a compact, single-chip computer integrating a CPU, program memory (Flash/ROM), data memory (RAM), and configurable peripherals on a single die. The PIC16 mid-range family uses a RISC-based 14-bit instruction set with 35 single-word instructions and a 200 ns instruction cycle at 20 MHz, making it well suited for control loops, sensor interfacing, and glue logic replacement. PIC16F devices sit within the broader taxonomy of microcontrollers -> 8-bit MCUs -> PIC microcontrollers -> semiconductor ICs, and they bridge the low-pin-count PIC10/12/16 family with the higher-pin PIC18 and dsPIC lines. Key features of the PIC16F688 include 7KB Flash program memory, 256 bytes of RAM, 256 bytes of EEPROM, 12 digital I/O pins, an internal 8 MHz oscillator (with PLL options), a 10-bit ADC, comparators, capture/compare/PWM modules, and the nanoWatt technology sleep modes for battery-aware designs. The -E (extended) temperature grade is a critical selection criterion for industrial and harsh-environment deployments where the -I (industrial, -40C to +85C) variant is insufficient. Architecturally, the PIC16F688T-E/SL is a Harvard-architecture RISC core with separate program Flash and data EEPROM buses, hardware stack, and deterministic interrupt handling. This makes timing analysis straightforward - an advantage over more complex ARM-based MCUs for hard-real-time control loops. The 20 MHz clock supports instruction cycles as fast as 200 ns, giving predictable latency for PWM-driven motor or lighting control applications. Typical applications include LED lighting controllers, automotive body electronics subsystems, small appliance control boards, battery chargers, sensor signal conditioning, and consumer remote controls. The wide 2.0V-5.5V operating range also supports direct battery connection in single-cell Li-ion or 3-cell alkaline systems. Industrial control modules and HVAC sensor nodes commonly deploy the -E temperature variant. Compared with PIC18 or Cortex-M0 parts, the PIC16F688 wins on cost-per-pin and on simplicity when advanced peripherals are not required. When designing with this device, verify that the 12 I/O and 8-channel ADC suffice for your application before committing; for designs needing more channels or USB, look up to PIC18F2550 or PIC16F1455. Also confirm the SOIC-14 footprint matches your PCB layout - the SL suffix denotes 14-SOIC (0.150 inch body) and is not interchangeable with TSSOP (ST suffix) without board rework. This page synthesizes distributor pricing, drop-in SOIC-14 alternatives from the PIC16F family, and practical design notes that are not consolidated in the manufacturer datasheet.

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PIC16F688T-E/ST

PIC16F688T-E/ST - 8-bit MCU, 7KB Flash, 20MHz, 14-TSSOP | Microchip

The Microchip Technology PIC16F688T-E/ST is an 8-bit Flash-based CMOS microcontroller in the PIC16 mid-range family, featuring 7KB (4K x 14 words) of Flash program memory, 256 bytes of SRAM, 256 bytes of EEPROM data memory, and a 20MHz internal oscillator, all housed in a 14-pin TSSOP package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM/EEPROM), and peripherals on a single die. 8-bit MCUs sit at the low-power, low-cost end of the microcontroller hierarchy (8-bit -> 16-bit -> 32-bit), and are widely used in consumer appliances, sensor nodes, and battery-powered devices where deterministic real-time response, code simplicity, and ultra-low standby current matter more than raw compute throughput. The PIC16F688 belongs to Microchip's mid-range x14 instruction architecture, which uses a 14-bit instruction word and offers up to 8 MIPS performance at 20MHz, plus on-chip peripherals including a 10-bit ADC, comparators, PWM, USART, and nanoWatt power-management hardware for sleep current in the sub-microamp range. Key features of the PIC16F688T-E/ST include 12 digital I/O pins (with interrupt-on-change capability), a 10-bit A/D converter with up to 8 channels, two analog comparators, a capture/compare/PWM module, an enhanced USART, and a wide operating voltage range of 2.0V to 5.5V. The 'E' suffix denotes the Extended operating temperature grade of -40C to +125C, and the 'T' indicates Tape & Reel packaging. The 'ST' suffix marks the 14-pin TSSOP package option. Technically, the PIC16F688 uses a RISC Harvard architecture with separate program and data buses, a hardware multiplier-free 35-instruction set, and nanoWatt features such as ultra-low-power wake-up, oscillator start-up timer, and dual-speed oscillator modes. These allow designers to balance active throughput against deep-sleep current for energy-harvesting and battery-backed applications. Typical applications include LED lighting controllers, battery chargers, sensor signal conditioning, small motor control, and low-cost IoT endpoints. The TSSOP-14 footprint also makes the part suitable for space-constrained designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping procurement and embedded engineers quickly evaluate the part.

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PIC16F689-E/ML

PIC16F689-E/ML - 8-Bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F689-E/ML is an 8-bit PIC16 family flash-based microcontroller delivering 7KB (4K x 14 words) of program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory. According to Microchip product documentation, the device operates up to 20 MHz instruction clock and supports a wide 2.0V to 5.5V supply range, packaged in a 20-pin QFN (4x4 mm) with an exposed thermal pad. The PIC16F689 is part of the PIC16F6xx mid-range family that brings nanoWatt power management, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), and a 12-bit A/D converter to cost-sensitive embedded designs. A PIC16 (Peripheral Interface Controller, 8-bit) microcontroller is a Harvard-architecture RISC device in which program and data memories are separately addressed. The PIC16 mid-range family uses a 14-bit instruction word and provides deterministic instruction timing, which simplifies real-time control tasks. Within the Microchip portfolio, PIC16 sits hierarchically between the baseline PIC10/12/16 families and the 16-bit dsPIC/PIC24 line; it is a direct ancestor of the more recent enhanced mid-range PIC16F1xxx family. Key features of the PIC16F689-E/ML include 18 digital I/O pins, an integrated 12-bit ADC with up to 12 channels, one EUSART, one MSSP module supporting SPI and I2C (both master and slave), two 8-bit timers plus one 16-bit timer, and a Capture/Compare/PWM (CCP) module. The nanoWatt technology provides multiple idle and sleep modes that drop quiescent current into the nanoampere range, suiting battery-powered sensor nodes. On-chip in-circuit debug (ICD) and in-circuit serial programming (ICSP) allow field upgrades and simplify prototyping. Architecturally, the PIC16F689 uses a RISC core with 35 single-word instructions and a hardware multiplier that accelerates arithmetic in motor control and signal-processing loops. The 12-bit ADC features an internal voltage reference, selectable acquisition time, and sleep-mode conversion, which is uncommon in this class and useful for energy-harvesting applications. Typical applications include industrial sensor transmitters, HVAC damper/actuator control, low-end motor control (small DC and stepper drives), white goods user interfaces, lighting controllers, battery chargers, and remote-control RF front-ends. The combination of EUSART, MSSP, ADC, and CCP gives designers enough peripherals to drive a complete sub-system without an external companion IC. When designing with the PIC16F689-E/ML, observe the absolute maximum supply of 5.5V and derate power dissipation when using the QFN exposed pad with insufficient copper. The device configuration bits control oscillator mode, watchdog timer, brown-out voltage, and code protection; they must be set explicitly in source code even when defaults appear to work, otherwise debugger handshaking can fail. This page synthesizes distributor pricing, drop-in alternatives within the PIC16 family, and practical design notes that complement the manufacturer datasheet. Specifications marked [DATA_NEEDED] were not present in the verified distributor data and should be confirmed against the Microchip datasheet (DS41202 family document) before final selection.

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PIC16F689-E/P

PIC16F689-E/P - 8-Bit 20 MHz Flash MCU | Microchip

The Microchip Technology PIC16F689-E/P is an 8-bit, flash-programmable PIC microcontroller with a 20 MHz operating speed, 7 KB of program Flash organized as 4K x 14 words, 256 bytes of RAM, and 12 I/O pins in a 20-pin PDIP package. It operates across a 2.0 V to 5.5 V supply range and includes on-board EEPROM data memory according to the manufacturer product page. A flash-based microcontroller is a programmable semiconductor that stores its application code in nonvolatile Flash memory instead of mask-programmed or one-time-programmable ROM. The PIC16F689 belongs to the PIC16 mid-range family, using the PIC architecture with a 14-bit program word and an RISC-like instruction set. Within the embedded-control hierarchy, this device is a microcontroller IC combining CPU, Flash program memory, RAM, EEPROM, oscillators, and parallel I/O in one package. The verified product data identifies the device as an 8-bit MCU with 20 MHz maximum clock speed, 7 KB Flash, 256 bytes of RAM, 12 I/O pins, and an operating supply range of 2.0 V to 5.5 V. The -E portion denotes the -40 °C to +85 °C commercial temperature grade, while /P identifies the through-hole PDIP package. The -40 °C to +85 °C grade interpretation comes from the ordering-code convention and should be confirmed against the manufacturer datasheet before release. The PIC16F689-E/P is suited to compact embedded controllers, industrial automation modules, instruments, motor and relay interfaces, and low-to-medium-speed control panels. Its 12 available I/O pins support digital sensors, switches, indicators, displays, and actuator interfaces, while the 256-byte RAM accommodates working variables and short data buffers. On-board EEPROM allows calibration values, configuration parameters, and serial identifiers to be retained without external memory. The 20-pin PDIP package favors through-hole assembly, prototype development, repair, and designs where socketed or manually soldered parts are preferred. PCB layout should preserve the datasheet pin functions for MCLR, programming, oscillator connections, supply rails, and I/O. Decoupling requirements, oscillator configuration, programming pins, and unused-pin treatment must be taken directly from the Microchip PIC16F689 datasheet rather than inferred from generic PIC16 guidance. For a new design, select this exact -E/P ordering code when the required commercial temperature grade and 20-pin through-hole footprint are mandatory. The -I/P ordering variant may suit a wider industrial temperature grade, while surface-mount and QFN variants require different PCB footprints and are not drop-in replacements. This page consolidates distributor listings, manufacturer specifications, package constraints, and practical engineering guidance into a source-traceable selection reference.

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PIC16F689-E/SS

PIC16F689-E/SS - 20MHz 8-Bit Flash MCU 7KB | Microchip

The Microchip Technology PIC16F689-E/SS is a 20 MHz, 8-bit Flash-based CMOS microcontroller from the PIC16F6xx family with 7 KB (4K x 14) of program memory, 256 bytes of RAM, and 256 bytes of EEPROM data memory, housed in a 20-pin SSOP package. The extended (-E) temperature grade supports an operating range of -40C to +125C, making it suitable for industrial and harsh-environment applications. The device integrates a 12-channel 10-bit Analog-to-Digital Converter (ADC), an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), MSSP for I2C/SPI, two 8-bit timers and one 16-bit timer, and a nanoWatt power-managed core with multiple idle/sleep modes. An 8-bit microcontroller (MCU) is a single-chip computer that processes data in 8-bit (one-byte) chunks through a RISC CPU optimized for deterministic, low-latency control tasks. The PIC16F6xx family belongs to the mid-range x14 architecture hierarchy (PIC10/12/16/18/24/32), which sits within the broader 8-bit PIC microcontroller product line. Compared with 32-bit ARM Cortex-M MCUs, 8-bit PICs trade raw throughput for deterministic interrupt response, ultra-low power consumption, and a streamlined 35-instruction instruction set that simplifies embedded firmware development. Key features include 18 digital I/O pins (shared with analog peripherals), an internal 8 MHz oscillator with PLL options, a comparator module, a 16-bit PWM capture/compare, brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT), and In-Circuit Serial Programming (ICSP) via two pins. The device operates from 2.0V to 5.5V (per family datasheet 40001262F), supporting both 3.3V and 5V rails common in industrial and consumer designs. The SSOP-20 footprint measures 5.30 mm x 7.20 mm with a 0.65 mm pitch. Typical applications include sensor signal conditioning, low-cost motor control, LED lighting drivers, smart energy metering, battery chargers, and consumer white goods. The 256-byte EEPROM and 10-bit ADC allow small-signal analog nodes to be calibrated and persisted without external components. The EUSART plus MSSP combination provides flexible master/slave connectivity to sensors, displays, and wireless modules. When designing with this device, allocate the I/O budget carefully: of 20 total pins, two are reserved for VDD/VSS and two for ICSP (PGD/PGC), leaving up to 18 usable I/O. Ensure decoupling of 100 nF and 10 uF near the supply pins, and place the ICSP connector so production programming does not require header rework. This page consolidates distributor pricing, drop-in same-package alternatives, and practical design notes not found on the manufacturer datasheet.

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PIC16F689-E/P - 8-Bit 20 MHz Flash MCU | Microchip

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