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PIC16F687-I/SO - 8-Bit 20MHz Flash PIC MCU, 20-SOIC | Microchip Technology
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 - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
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 - 8-Bit 20MHz 3.5KB Flash MCU, 20-QFN | Microchip
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 - 20MHz 8-bit MCU 3.5KB Flash | Microchip
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 - 14-Pin 8-bit Flash MCU 20MHz | Microchip
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 - 20MHz 8-Bit Flash MCU | Microchip Technology
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 - 8-Bit 20MHz 7KB Flash MCU 14-SOIC | Microchip
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-E/ST - 8-Bit 20MHz Flash MCU | Microchip Technology
PIC16F688-E/ST

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

The Microchip Technology PIC16F688-E/ST is an 8-bit flash-based PIC microcontroller with a 20 MHz operating speed, 7 KB of program memory organized as 4K × 14 words, and a 14-pin TSSOP package. The device includes 256 bytes of RAM according to its distributor listing and is intended for compact embedded-control designs requiring integrated nonvolatile program memory and a low-pin-count surface-mount footprint. A microcontroller is a programmable semiconductor that integrates a CPU, memory, and peripherals on one chip. The PIC16F688 belongs to the PIC16 mid-range family and uses the enhanced mid-range x14 architecture. Within the product hierarchy, it is a flash-based 8-bit embedded controller, combining a RISC-like instruction set, digital I/O, analog functions, and timing resources in a device designed for compact control systems. The verified product information identifies a 20 MHz maximum clock, 7 KB of flash program memory, 256 bytes of RAM, and 12 I/O pins. Microchip’s product page describes the 14-pin family as supporting a 2.0 V to 5.5 V operating range and offering onboard EEPROM data memory. The -E suffix denotes the extended-temperature device family, while /ST identifies the 14-pin TSSOP package configuration. The x14 architecture provides 14-bit program words and a compact instruction set suited to cost-sensitive embedded products. Flash memory permits in-circuit reprogramming, while the integrated EEPROM supports retention of configuration or calibration data. The MCU’s peripheral mix is intended to reduce the number of external components in applications such as industrial controls, instrument panels, simple motor controllers, and compact consumer equipment. Typical uses include monitoring switches and sensors, sequencing external actuators, driving displays, implementing timers, and controlling small electromechanical systems. Its 12 I/O pins make the TSSOP configuration suitable for products that need moderate digital connectivity without requiring a larger leaded package. The 14-pin format also simplifies dense, low-power control boards where board area is constrained. Circuit design should begin with the manufacturer’s pin-description table and the package drawing. Place the decoupling capacitor adjacent to VDD and VSS, route programming and debug signals away from sensitive analog inputs, and confirm that every connected pin remains valid for the selected operating voltage. Review the complete datasheet for electrical limits, oscillator options, peripheral multiplexing, and programming requirements before releasing the PCB. This page combines the verified manufacturer and distributor facts with package guidance, application analysis, and strict drop-in replacement checks. Those engineering-focused details help distinguish a genuine pin-compatible substitution from a device that merely has a similar product name or a different package.

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PIC16F688-I/ML - 8-Bit 20MHz 7KB Flash MCU | Microchip
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 - 8-Bit 20MHz 7KB Flash MCU 14-PDIP | Microchip
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 - 8-Bit 20MHz 7KB Flash MCU | Microchip
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 - 8-bit 20MHz 7KB Flash MCU | Microchip TSSOP-14
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 - 7KB Flash 8-bit MCU, SOIC-14 | Microchip
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 - 8-bit MCU, 7KB Flash, 20MHz, 14-TSSOP | Microchip
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 - 8-Bit 20MHz 7KB Flash MCU | Microchip
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 - 8-Bit 20 MHz Flash MCU | Microchip
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 - 20MHz 8-Bit Flash MCU 7KB | Microchip
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-I/P - 8-bit MCU, 7KB Flash, 20MHz, 20-DIP | Microchip
PIC16F689-I/P

PIC16F689-I/P - 8-bit MCU, 7KB Flash, 20MHz, 20-DIP | Microchip

The Microchip Technology PIC16F689-I/P is an 8-bit RISC flash microcontroller in a 20-pin PDIP package, built on Microchip's mid-range x14 architecture and featuring nanoWatt Technology for ultra-low-power operation. It integrates 7KB (4K x 14 words) of flash program memory, 256 bytes of SRAM, and 256 bytes of data EEPROM, while executing instructions at up to 20 MHz from an internal oscillator or external clock source. What is an 8-bit PIC microcontroller? An 8-bit PIC microcontroller is a single-chip computer built around a RISC CPU core with 8-bit wide data paths, on-chip flash program memory, RAM, EEPROM, and a rich set of integrated peripherals. In the broader taxonomy, a PIC16F part belongs to the mid-range 8-bit microcontroller family, which sits under the umbrella of microcontrollers (MCU), and in turn under embedded controllers, microcomputer ICs, and ultimately semiconductors. The PIC16F689 specifically targets low-pin-count (20-pin) cost-sensitive embedded designs. Key features of this device include 18 digital I/O pins, a 12-bit A/D converter with 12 channels, an enhanced USART, an MSSP module supporting SPI and I2C (both Master and Slave), two 8-bit timers and one 16-bit timer, an 8-bit parallel slave port, and an internal voltage reference. A wide 2.0V to 5.5V operating range lets a single design power from a 3.3V or 5V rail. nanoWatt Technology brings idle, sleep, and watchdog-timer based power-saving modes that draw microamp-level currents. Architecturally, the PIC16F689 uses a 14-bit instruction word with a single accumulator (W) and up to 80 instructions, plus hardware stack and interrupt controller. The on-board ICD (In-Circuit Debugger) and ICSP (In-Circuit Serial Programming) interfaces speed firmware development and field firmware upgrades. The 12-bit ADC and internal comparator make mixed-signal interfacing straightforward for sensor-front-end designs. Typical applications include consumer appliance controls, low-end remote controls, sensor interfaces, simple motor controllers, battery chargers, lighting ballasts, and educational / hobbyist projects where the 20-DIP form factor supports breadboarding. Designers often pair it with Microchip's free MPLAB X IDE, XC8 compiler, and MPLAB ICD 3 / PICkit 4 debug tools. When designing with this part, plan the I/O budget carefully: although the chip exposes 18 I/O pins, several are multiplexed with the ICSP, ICD, oscillator, and MCLR functions. Choose an external oscillator or set the INTOSC configuration carefully to free up the OSC1/OSC2 pins for general I/O. Use the built-in EEPROM endurance spec to estimate write-cycle life in data-logging applications. This page synthesizes distributor pricing, drop-in PIC16F family alternatives, and practical design notes that complement - but do not replace - the manufacturer datasheet.

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PIC16F689-I/SO - 8-Bit MCU, 7KB Flash, 20MHz, 20-SOIC | Microchip
PIC16F689-I/SO

PIC16F689-I/SO - 8-Bit MCU, 7KB Flash, 20MHz, 20-SOIC | Microchip

The Microchip Technology PIC16F689-I/SO is a 20-pin, 8-bit Flash-based CMOS microcontroller from the mid-range PIC16 family, running at up to 20 MHz with 7 KB of Flash program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory, housed in a 20-pin SOIC (SO) package. The device integrates 18 digital I/O pins, a 12-channel 10-bit Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) with auto-baud detection, an MSSP module supporting SPI and I2C (master/slave), an internal 8 MHz oscillator, and an Enhanced Capture/Compare/PWM (ECCP) peripheral. It operates from 2.0 V to 5.5 V with nanoWatt power-management technology enabling standby currents below 100 nA. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one package. The PIC16F family specifically belongs to the mid-range 8-bit RISC architecture tier in Microchip's PIC portfolio, positioned between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families. Within the broader IC taxonomy, MCUs sit under microcontrollers -> embedded processors -> digital ICs -> semiconductors. The 14-bit instruction word and 35-instruction RISC core deliver deterministic, single-cycle execution at 200 ns per instruction, while the standardized peripheral set ensures code portability across PIC16F68x family members. Key features of the PIC16F689 include the 10-bit ADC with internal voltage reference, nanoWatt technology for sleep currents below 100 nA, an ultra-low-power wake-up on pin-change interrupt, and a wide 2.0-5.5 V supply range that lets the same part serve 3.3 V and 5 V designs. The integrated EUSART simplifies RS-232/RS-485 bridging, while the MSSP handles SPI/I2C sensor and EEPROM interfacing without external logic. The on-chip 8 MHz internal oscillator eliminates the need for an external crystal in cost-sensitive applications. Technically, the PIC16F689 uses Harvard architecture with separate code and data buses. The 8-level hardware stack and 35 single-word instructions reduce firmware footprint. Debugging is supported through in-circuit serial programming (ICSP) and two hardware breakpoints. The Enhanced Capture/Compare/PWM module provides programmable dead-band control and auto-shutdown for motor drive and lighting control. The device supports 100,000 Flash erase/write cycles and 40-year data EEPROM retention. Typical applications include consumer appliance control panels, low-end sensor nodes, battery-powered instrumentation, LED lighting controllers, automotive body electronics (non-safety), and small motor drivers. The 20-SOIC package allows easy hand-soldering and breadboard prototyping for hobbyist and educational kits. When designing with this part, reserve one I/O pin for the ICSP clock and one for data to retain in-field firmware upgrade capability; omitting this later forces a return-to-factory reprogramming flow. This page synthesizes distributor pricing, drop-in alternatives from the same PIC16 family, application context, and practical design notes not collated in any single manufacturer document.

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PIC16F689T-I/ML - 8-bit 20MHz 7KB Flash MCU | Microchip
PIC16F689T-I/ML

PIC16F689T-I/ML - 8-bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F689T-I/ML is an 8-bit flash-based CMOS microcontroller from the PIC16F mid-range family, featuring a 20 MHz internal oscillator, 7 KB (4K x 14) of Flash program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory, packaged in a 20-pin QFN (ML, 4x4 mm) with an exposed thermal pad. It provides 18 digital I/O pins, supports a wide operating voltage range of 2.0 V to 5.5 V, and integrates nanoWatt power-management technology for sleep currents as low as 50 nA typical. 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 programmable peripheral interfaces on one die. PIC16F-series mid-range MCUs use Microchip's enhanced 14-bit instruction set architecture (ISA), which sits between 8-bit baseline PIC10/12 and 16-bit PIC24/dsPIC families. Within the power-management hierarchy, an MCU combines compute, memory, and I/O control into one package, replacing discrete logic in embedded systems. Key features include a 10-bit ADC with 12 channels, two 8-bit and one 16-bit timers, an enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART) with auto-baud, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C (master/slave), and an on-board 20 MHz internal oscillator with factory calibration to within +/-1%. The PIC16F689 also integrates a high-performance comparator, programmable brown-out reset (BOR), and an in-circuit serial programming (ICSP) interface. The QFN-20 package has a low thermal resistance and is suitable for space-constrained designs. Architecturally, the PIC16F689 employs a Harvard-style memory structure (separate program and data buses), a 14-bit wide instruction word, and a hardware stack eight levels deep for subroutine nesting. The internal 20 MHz oscillator eliminates the need for an external crystal in most cost-sensitive applications, while the nanoWatt technology dynamically adjusts clock and peripheral activity for sleep-current-sensitive battery applications. Typical applications include consumer appliances, sensor signal conditioning, low-cost motor control, battery-powered instruments, lighting controls, and small-form-factor IoT edge nodes. The wide voltage range and internal oscillator make the device well suited to battery-operated designs, while the integrated ADC and EUSART simplify sensor-interface firmware. When designing with the PIC16F689, ensure that exposed pad (EP) on the QFN is properly soldered to the PCB ground plane for thermal dissipation and electrical performance. Programming requires a Microchip PICkit, ICD, or compatible ICSP programmer; ensure MCLR is pulled high through a resistor for normal operation. The internal oscillator can drift over temperature; for UART timing-critical applications, use an external crystal or the PLL-stable configuration. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F689T-I/SO - 8-bit 20MHz 7KB Flash MCU | Microchip
PIC16F689T-I/SO

PIC16F689T-I/SO - 8-bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F689T-I/SO is an 8-bit PIC16 mid-range RISC Flash microcontroller with 7KB (4K x 14) program memory, 256 bytes of EEPROM data memory, and 18 general-purpose I/O pins in a 20-pin SOIC package, supplied on Tape and Reel. It executes instructions at a 200 ns cycle time from a 20 MHz internal oscillator and integrates nanoWatt power-management technology for low quiescent-current operation across a 2.0V to 5.5V supply range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM/EEPROM), I/O peripherals and a clock source. The PIC16F689 belongs to the mid-range x14 architecture family - a reduced-instruction-set (RISC) core with 14-bit instruction words, 35 single-word instructions, and standardized peripheral mappings across family members. Within the broader semiconductor taxonomy, an MCU is a sub-class of microcontroller -> embedded processor -> semiconductor IC, optimized for deterministic, low-cost control tasks rather than application processing. Key features include enhanced Capture/Compare/PWM (ECCP) modules, up to 11 channels of 10-bit Analog-to-Digital Conversion (ADC), an on-chip comparator, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), and a Master Synchronous Serial Port (MSSP) supporting SPI and I2C. The nanoWatt feature set provides multiple idle and sleep modes with typical currents well below 1 µA, extending battery life in standby applications. The device operates across the industrial temperature range of -40°C to +85°C. Architecturally, the PIC16F689T-I/SO combines Harvard bus structure, separate instruction and data paths, and peripheral pin-select (PPS) limited flexibility typical of mid-range PIC devices. Its 20-pin count positions it above 14-pin PIC16F688-class parts (12 I/O) but below 28-pin PIC16F690-class parts (more memory, more peripherals) - making it a balance point for cost-sensitive embedded control designs. Typical applications include consumer appliance control, LED lighting controllers, sensor signal conditioning, battery-powered instrument front-ends, automotive interior subsystems (non-safety-critical), industrial sensor hubs, and small-form-factor IoT edge nodes where the 2.0-5.5V supply range is compatible with single-cell Li-ion or 2xAA battery chemistries. Design tip: the 20-pin SOIC footprint is shared across PIC16F685, PIC16F687, PIC16F688, PIC16F689 and PIC16F690 family members, enabling pin-compatible migration when memory or peripheral requirements scale up or down within a product family. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, parametric comparisons, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16F690-E/ML - 8-bit PIC MCU, 7KB Flash, 20MHz, 20-QFN | Microchip
PIC16F690-E/ML

PIC16F690-E/ML - 8-bit PIC MCU, 7KB Flash, 20MHz, 20-QFN | Microchip

The Microchip Technology PIC16F690-E/ML is an 8-bit Flash-based CMOS PIC microcontroller in a 20-pin QFN (4x4 mm) package, running at up to 20 MHz with 7 KB (4K x 14) of program Flash and 256 bytes of RAM. The extended (-E) temperature grade is rated for -40C to +125C operation, while the standard -I grade spans -40C to +85C. The device is qualified to operate across 2.0V to 5.5V supply rails and includes on-chip EEPROM data memory, an integrated 10-bit ADC, and nanoWatt power management for sleep-mode current in the microamp range. What is a PIC16 mid-range microcontroller? The PIC16 family is Microchip's mid-range 8-bit RISC architecture with a 14-bit instruction word (x14), positioned between the baseline PIC10/12/16 families and the enhanced PIC18 line. MCUs in this class typically combine a small footprint (8 to 64 pins), low power consumption, on-chip peripherals (ADC, comparators, PWM, USART, I2C, SPI), and Flash self-programmability, making them widely used for embedded control in appliances, sensor nodes, and white goods. They sit within the broader hierarchy of microcontroller -> embedded controller -> semiconductor IC. Key features of the PIC16F690 include 18 digital I/O pins with interrupt-on-change capability, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), MSSP supporting both SPI and I2C (master/slave), a 10-bit ADC with up to 12 channels, two analog comparators, three timers, and an internal 8 MHz oscillator. The QFN-20 footprint measures only 4x4 mm, enabling dense PCB layouts for space-constrained designs. Code protection, a wide operating voltage range, and nanoWatt sleep modes support battery-friendly designs. Typical applications for the PIC16F690-E/ML include white-goods and small-appliance control boards, low-cost sensor signal conditioning nodes, LED lighting controllers, battery chargers, HVAC actuators, and consumer remote/keypad interfaces. The integrated EUSART and MSSP also suit it for protocol-bridge or simple supervisory roles in industrial sub-assemblies. When designing with this device, ensure proper decoupling (100 nF ceramic close to VDD) and respect the in-circuit serial programming (ICSP) pin assignments. The QFN exposed pad must be soldered to a copper pad for thermal and electrical grounding. The extended temperature grade (-E) makes the PIC16F690-E/ML particularly suited to under-hood automotive and outdoor installations.

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PIC16F690-E/P - 8-bit 20MHz 7KB Flash MCU, 20-PDIP | Microchip
PIC16F690-E/P

PIC16F690-E/P - 8-bit 20MHz 7KB Flash MCU, 20-PDIP | Microchip

The Microchip Technology PIC16F690-E/P is an 8-bit PIC16 family flash microcontroller built on the mid-range 14-bit instruction core, offered in a 20-pin PDIP through-hole package. It combines a 20 MHz CPU clock with 7 KB of Flash program memory, 256 bytes of RAM, and 256 bytes of EEPROM data memory, integrating 12 digital I/O, 10-bit ADC, two comparators, capture/compare/PWM, USART, I²C/SPI, and nanoWatt power management. According to the Microchip product page and DigiKey listing, the part operates across the 2.0 V to 5.5 V range that defines the entire low-pin-count PIC16F family. What is a low-pin-count PIC16F microcontroller? It is a class of 8-bit Harvard-architecture microcontrollers from Microchip that implement the mid-range x14 instruction set, optimized for cost-sensitive embedded designs that need compact code, on-chip EEPROM, and flexible peripherals. PIC16F parts sit in the hierarchy microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC, and they are widely deployed where PIC16F687, PIC16F88, or PIC16F628A were used previously. Key features integrate over the 20 MHz CPU clock, 14-bit instruction word, 8-level hardware stack, 25-pin equivalent I/O with 12 dedicated GPIO, 10-bit 8-channel ADC with internal voltage reference, two analog comparators, one enhanced USART (AUSART), MSSP for I²C/SPI master-slave, 10-bit PWM, and a nanoWatt power-managed sleep mode drawing less than 50 nA typical. The on-chip debug and ICSP header keeps in-system programming simple. The architecture pairs a RISC ALU with separate code and data buses, single-cycle instruction execution except for branches, and Brown-out Reset (BOR) plus Power-on Reset (POR). Compared to earlier PIC16C/F parts the 690 adds a linear addressable EEPROM, more PWM channels, and the AUSART module, supporting more motor and sensor applications. Typical applications include appliance control panels, sensor conditioning front-ends, small motor control loops, battery-powered metering, automotive body controllers (AEC-Q100 industrial temperature grade), and low-cost serial-bridge or signal-conditioning PCBs. When designing with this part, ensure decoupling of VDD with 100 nF plus 10 µF bulk as close as possible to the pins, and keep the ICSP clock/data traces short to avoid coupling noise. The internal 8 MHz oscillator can free the two OSC pins for I/O in space-constrained boards. This page combines distributor pricing, drop-in alternatives, and practical design guidance beyond what the manufacturer datasheet or distributor catalog pages provide.

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PIC16F690-E/SO - 8-Bit 20MHz 7KB Flash MCU | Microchip | SOIC-20
PIC16F690-E/SO

PIC16F690-E/SO - 8-Bit 20MHz 7KB Flash MCU | Microchip | SOIC-20

The Microchip Technology PIC16F690-E/SO is an 8-bit PIC16 mid-range flash microcontroller delivering 20 MHz CPU performance with 7 KB (4K x 14) of Flash program memory, packaged in a 20-pin SOIC (0.295 inch, 7.50 mm body width). It combines an enhanced mid-range 14-bit instruction set with nanoWatt power management, making it a workhorse for low-cost embedded designs. A PIC16 microcontroller is an 8-bit RISC flash MCU family built around a Harvard architecture with a small, deterministic instruction set (35 single-word instructions), on-chip Flash for program storage, EEPROM for non-volatile data, and a rich set of peripherals in a compact 20-pin footprint. Within the broader taxonomy, the PIC16F690 sits in the microcontrollers hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC16 mid-range family -> nanoWatt technology node -> surface-mount SOIC package. Key specifications include 256 bytes of SRAM, 256 bytes of EEPROM data memory, 18 digital I/O pins, an internal 8 MHz oscillator, a 12-channel 10-bit ADC, enhanced USART, MSSP (I2C/SPI), two 8-bit and one 16-bit timers with capture/compare, and 2.0V-5.5V operating voltage. The "-E" suffix denotes the extended industrial temperature range (-40C to +125C), while "/SO" indicates the SOIC-20 package. Architecture-wise, the device uses a 14-bit instruction word, 8-level hardware stack, and prioritized interrupt controller with hardware context save. The nanoWatt technology delivers dynamic power management through run, idle, and sleep modes with multiple wake-up sources, enabling battery-friendly designs. Typical applications include consumer appliance control, sensor signal conditioning, low-end motor control (small DC fans, solenoids), battery chargers, security/entry systems, and small industrial controllers. Peripherals like ADC, PWM, and USART support closed-loop control loops in cost-sensitive products. A key design consideration: the SOIC-20 package supports hand-soldering and rework but occupies roughly twice the PCB area of an SSOP-20 (PIC16F690-E/SS variant). For new high-density designs, the SSOP-20 (PIC16F690-E/SS) variant is preferred; the SOIC remains preferred for prototyping, low-density designs, and easy field-rework. This page synthesizes distributor pricing, drop-in package variants, and design guidance beyond what is in the standalone Microchip datasheet. The Microchip part-numbering decoder confirms -E = extended temperature grade and /SO = 20-pin SOIC.

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