Mga Microcontroller

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PIC16F677T-I/SO - 3.5KB Flash MCU, 20MHz, 20-SOIC | Microchip
PIC16F677T-I/SO

PIC16F677T-I/SO - 3.5KB Flash MCU, 20MHz, 20-SOIC | Microchip

The Microchip PIC16F677T-I/SO is a 20 MHz, 8-bit Flash-based CMOS microcontroller in a 20-pin SOIC package, offering 3.5 KB of Flash program memory, 128 bytes of RAM, and 256 bytes of EEPROM data memory. It integrates a 12-channel 10-bit ADC, comparators, a Capture/Compare/PWM (CCP) module, and the nanoWatt power-management feature set for low-power designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, I/O peripherals, and timers onto one die, enabling self-contained embedded control in applications ranging from appliance keypads to industrial sensor nodes. The PIC16F677 belongs to Microchip's well-established mid-range PIC® 16F family, which uses a RISC-based 14-bit instruction word architecture with 35 single-word instructions - a sweet spot of code density, deterministic timing, and C-compiler friendliness that has powered decades of 8-bit designs. Key features include 18 digital I/O pins multiplexed with analog and peripheral functions, 2 comparators, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) for RS-232/RS-485 links, an SPI/I2C master/slave MSSP port, and a 10-bit ADC with 12 channels for direct sensor conditioning. The device operates across 2.0 V to 5.5 V, supporting both 3.3 V and 5 V rails, and offers multiple low-power sleep modes via nanoWatt technology that drop quiescent current below 1 µA in deep sleep - critical for battery-powered or energy-harvesting products. The PIC16F677T-I/SO uses a Harvard architecture with separate program and data buses, plus an internal 8 MHz oscillator (calibrated to ±1 %) that eliminates the external resonator in many designs. Programming is performed through In-Circuit Serial Programming (ICSP) using only two pins (PGC/PGD), allowing firmware updates after board assembly and supporting Microchip's standard development toolchain (MPLAB X IDE, XC8 compiler, and PICkit programmers). Typical applications include consumer appliances, low-cost remote controls, sensor signal conditioning with on-chip ADC, LED lighting controllers, small motor/relay drivers via the CCP PWM, and industrial sensor interfaces. The wide operating voltage and 20-pin SOIC footprint make it a common choice as a pin-compatible upgrade for the older PIC16F627/PIC16F628 family with more Flash, EEPROM, and analog channels. When designing with this part, ensure the VDD/VSS pins each have a local 0.1 µF decoupling capacitor placed within 5 mm of the pin, and respect the absolute maximum VDD of 5.5 V. Unused I/O pins should be configured as outputs low to minimize current draw in sleep mode. The MCLR pin must not be left floating unless internal MCLR is enabled in the configuration bits. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F684-E/P - 8-Bit 20MHz 3.5KB Flash MCU 14-PDIP | Microchip
PIC16F684-E/P

PIC16F684-E/P - 8-Bit 20MHz 3.5KB Flash MCU 14-PDIP | Microchip

The Microchip Technology PIC16F684-E/P is an 8-bit Flash-based CMOS microcontroller from the PIC16 mid-range family, operating at up to 20 MHz instruction rate with 200 ns instruction execution, packaged in a 14-pin PDIP through-hole package. The -E/P suffix denotes the extended (industrial) temperature range variant in plastic DIP, offering 3.5 KB (2K x 14) of Flash program memory, 128 bytes of SRAM, and 256 bytes of EEPROM data memory with 11 digital I/O pins. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, peripherals, and I/O on one die. PIC16 mid-range 8-bit MCUs sit in a well-defined product hierarchy: 8-bit microcontroller -> PIC16 family -> mid-range x14 architecture -> nanoWatt power-managed MCU -> low pin-count Flash MCU. The PIC16F684 implements the RISC instruction set with 35 single-word instructions, simplifying firmware development while providing deterministic timing for embedded control. Key features include nanoWatt power management technology, an internal 8 MHz oscillator with 4x PLL option for 32 MHz equivalent performance, a 10-bit ADC with 8 channels, enhanced capture/compare/PWM (ECCP) module, and multiple timers (Timer0, Timer1, Timer2). The device supports brown-out reset, power-on reset, watchdog timer, and in-circuit serial programming (ICSP), enabling field upgrades and robust embedded operation. The PIC16F684-E/P uses CMOS Flash process technology with nanoWatt dynamic power management, achieving typical active current below 1 mA at 4 MHz and standby currents in the microamp range. This combination suits battery-powered and energy-conscious embedded systems. The 14-pin PDIP package is preferred for hobbyist, educational, prototyping, and legacy industrial applications where through-hole mounting and breadboard compatibility simplify hardware development. Typical applications include consumer appliance control, sensor signal conditioning, low-power remote controls, LED lighting controllers, small motor control loops, and educational embedded platforms. The wide operating voltage range (2.0V to 5.5V) makes the device compatible with both 3.3V and 5V system rails. Compared to PIC16F630-class parts, the PIC16F684 adds ADC, ECCP, and significantly more Flash, giving it an edge in mixed-signal and PWM-intensive designs. When designing with this MCU, ensure decoupling with a 100 nF ceramic capacitor placed within 5 mm of VDD, plus a bulk capacitor if the analog reference is used. ICSP pins (RB6/RA0/RB7) must be reserved for in-circuit programming access, either through dedicated header pins or test points on the PCB. Programming is performed via Microchip's MPLAB X IDE and PICkit programmers. This page synthesizes distributor pricing, drop-in PIC16 family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F684-E/SL - 8-bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip
PIC16F684-E/SL

PIC16F684-E/SL - 8-bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip

The Microchip PIC16F684-E/SL is a 14-pin Flash-based, 8-bit CMOS Microcontroller from the PIC16F family, featuring nanoWatt technology, 3.5KB (2K x 14) of Flash program memory, 128 bytes of RAM, and 256 bytes of EEPROM data memory, housed in a 14-pin SOIC package. It runs at up to 20 MHz clock speed with 200 ns instruction execution time and operates across a wide 2.0V to 5.5V supply range. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, RAM, non-volatile program memory, and peripherals. The PIC16F684 belongs to the 8-bit microcontroller hierarchy: PIC16F family -> PIC16 mid-range x14 architecture -> Microchip 8-bit PIC MCUs -> microcontroller -> embedded computing -> semiconductor IC. It uses Microchip's well-recognized mid-range 14-bit instruction word architecture, providing a balance of code density, deterministic timing, and ease of programming. Key features include 12 I/O pins, an internal 8 MHz oscillator with 4 selectable frequency options (31 kHz to 8 MHz), 4 analog 10-bit ADC channels, 1 capture/compare/PWM (CCP) module, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), and nanoWatt power management with multiple sleep modes that draw as little as 50 nA. The device also integrates a watchdog timer, brown-out detect reset, and an internal temperature indicator. Typical applications include low-power battery-operated sensor nodes, LED lighting controls, automotive AEC-Q100 systems (with the -E extended temperature range of -40C to +125C), small appliances, smoke detectors, and remote controls. The wide 2.0-5.5V range and nanoWatt sleep modes make it especially suitable for energy-harvesting and IoT edge devices. When designing with the PIC16F684-E/SL, ensure the ICSP programming pins (RB6/RA4) are accessible in your PCB layout. Place a 0.1uF decoupling capacitor close to VDD, and consider using the internal oscillator to save BOM cost if timing tolerance permits. The ADC reference voltage selection (VDD or VREF+) should match your signal conditioning range to maximize conversion resolution.

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PIC16F684-E/ST - 8-Bit 20MHz 3.5KB Flash MCU 14-TSSOP | Microchip
PIC16F684-E/ST

PIC16F684-E/ST - 8-Bit 20MHz 3.5KB Flash MCU 14-TSSOP | Microchip

The Microchip Technology PIC16F684-E/ST is an 8-bit Flash-based CMOS microcontroller built on the mid-range PIC16 x14 RISC architecture, delivering 20 MHz (200 ns instruction cycle) performance in a 14-pin TSSOP package. It integrates 3.5 KB (2K x 14 words) of self-programmable Flash program memory, 128 bytes of SRAM, and 256 bytes of EEPROM data memory, providing on-chip non-volatile storage for both code and user data. The device operates over a 2.0 V to 5.5 V supply range, making it directly compatible with both 3.3 V and 5 V system rails. A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory, data memory, and configurable peripheral blocks on a single die, enabling embedded control without external logic. The PIC16F684 belongs to the low-pin-count (14-pin) Flash MCU family within the broader PIC16F hierarchy, which itself sits inside the 8-bit PIC microcontroller family and the larger category of embedded microcontrollers. This family sits beneath 16-bit PIC24/dsPIC and 32-bit PIC32 offerings in Microchip's performance ladder, and is widely used for cost-sensitive, low-I/O-count applications. Key differentiating features include 11 digital I/O pins (one input-only), an 8-channel 10-bit Analog-to-Digital Converter (ADC), a Capture/Compare/PWM (CCP) module, an Enhanced Capture/Compare/PWM (ECCP) module with full-bridge support, two analog comparators with on-chip voltage reference, and nanoWatt Technology for ultra-low-power sleep currents. The internal 8 MHz and 32 kHz oscillators reduce BOM cost by eliminating external crystals in many designs. Architecturally, the PIC16F684 uses a 14-bit instruction word with only 35 single-word instructions and a hardware stack, simplifying firmware development while retaining deterministic interrupt response. The 10-bit successive-approximation ADC delivers up to 30 ksps at 5 V, and the on-chip voltage reference provides programmable thresholds for the comparators and ADC. Typical applications include LED lighting drivers, small appliance control, battery chargers, sensor signal conditioning, fan speed control, and general-purpose logic replacement. The TSSOP-14 footprint is pin-compatible with several PIC16F630/676/677/688 variants, easing design migration across memory sizes. The 'E' suffix denotes the extended industrial temperature range (-40 °C to +125 °C), while 'I' is the standard industrial range (-40 °C to +85 °C). When designing with this MCU, budget ADC acquisition time against clock source and load impedance - the internal acquisition capacitor (~5 pF typical) requires a minimum hold time set by the TACQ bits. Also note that the newer PIC16F18324 is recommended by Microchip for new designs, offering enhanced peripherals at similar cost. This page synthesizes distributor pricing, drop-in TSSOP-14 alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC16F684-I/ML - 8-Bit Flash MCU, 3.5KB, 20MHz, QFN-16 | Microchip
PIC16F684-I/ML

PIC16F684-I/ML - 8-Bit Flash MCU, 3.5KB, 20MHz, QFN-16 | Microchip

The Microchip PIC16F684-I/ML is an 8-bit flash-based CMOS microcontroller built on the PIC16 mid-range core with RISC architecture, packaged in a 16-pin QFN (4x4 mm). It delivers up to 5 MIPS performance from a 20 MHz oscillator, 3.5 KB of flash program memory (2K x 14), 128 bytes of RAM, and 256 bytes of data EEPROM. The /ML suffix indicates industrial temperature range (-40C to +85C) and QFN-16 surface-mount packaging. A mid-range 8-bit microcontroller (MCU) is a compact processor optimized for embedded control tasks where deterministic real-time response, low power, and modest program memory are priorities. Within Microchip's taxonomy, the PIC16F684 sits in the mid-range x14 family between the baseline PIC10/12/16 devices and the enhanced PIC18/dsPIC families. Its RISC instruction set contains 35 single-word instructions, each typically executing in a single 200 ns instruction cycle at 20 MHz, making it well suited to applications requiring predictable timing in appliance control, sensor interfaces, and low-end motor control. Key features of the PIC16F684-I/ML include 12 I/O pins capable of driving LEDs directly, a 20 MHz internal-external oscillator factory calibrated to +/-1% accuracy, an integrated 8-channel 10-bit ADC, two 8-bit timers plus one 16-bit timer, and a hardware USART for asynchronous serial communication. The device supports a wide 2.0 V to 5.5 V operating voltage, allowing direct battery or 3.3 V/5 V regulated supplies. nanoWatt power management technology provides several sleep modes with sub-microamp currents for battery-friendly designs. Architecturally, the PIC16F684 uses a Harvard-style memory map with separate program and data buses, an 8-level deep hardware call stack, and 14-bit wide instruction words. The configurable oscillator block includes INTOSC, EC, HS, XT, and LP modes selected via configuration bits. The on-chip peripherals are interconnected through Microchip's PPS (peripheral pin select)-equivalent remappable pin structure used on later PIC16 designs; for the F684 generation, dedicated I/O assignment is fixed. Code protection, brown-out reset (BOR), and a watchdog timer (WDT) with its own dedicated oscillator are standard. Typical applications include small home appliance control (coffee makers, blenders, fans), battery-powered sensor nodes, LED lighting controls, simple remote controls, white-goods user-interface boards, and low-cost motor drivers. The combination of EEPROM, ADC, PWM, and a USART in a 4x4 mm QFN lets designers replace multiple discrete components with a single chip. When designing with the PIC16F684-I/ML, allocate a 0.1 uF decoupling capacitor near VDD and place a 1 M-ohm reset pull-up on MCLR/VPP to ensure clean power-up. The QFN package has a thermal pad that should be soldered to the PCB ground pour to optimize thermal dissipation in continuous-load applications. This page consolidates real distributor pricing, drop-in alternatives drawn from the same PIC16 family, and practical design notes that go beyond the manufacturer datasheet itself.

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PIC16F684-I/P - 8-Bit 20MHz Flash MCU | Microchip
PIC16F684-I/P

PIC16F684-I/P - 8-Bit 20MHz Flash MCU | Microchip

The Microchip Technology PIC16F684-I/P is an 8-bit, 20 MHz flash-programmable PIC16 microcontroller in a 14-pin PDIP package, operating from 2.0 V to 5.5 V with 11 I/O ports. It combines 3.5 KB of program Flash, 128 bytes of RAM, on-chip EEPROM data memory, and integrated nanoWatt technology for low-power embedded-control designs. The -I grade denotes the manufacturer's industrial temperature option. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, I/O ports, and peripherals on one device. The PIC16F684 belongs to the PIC16 family and uses Microchip's mid-range enhanced mid-range, or PIC mid-range, architecture. In the broader semiconductor hierarchy, it is an 8-bit MCU within the embedded-processing and embedded-control domains. Its integrated flash memory permits field reprogramming, while EEPROM preserves calibration or configuration values without consuming RAM. Verified headline features include a maximum clock speed of 20 MHz, a 2.0 V to 5.5 V device-level operating range, 11 I/O ports, brown-out detection and reset, PWM, and a watchdog timer. These resources support compact control logic, basic measurement, motor or lighting functions, and communication-intensive embedded products. Although one distributor result states a narrower 4.5 V to 5.5 V supply range for this orderable variant, the verified manufacturer family information specifies the PIC16F684 operating range as 2.0 V to 5.5 V. The PIC16F684-I/P is suited to industrial controllers, sensor interfaces, compact power products, and low-cost consumer appliances. Designers should confirm the exact pinout, electrical limits, oscillator configuration, and programming requirements against the Microchip manufacturer datasheet before release. The 14-pin PDIP package also simplifies through-hole prototyping, though its larger footprint and lead geometry are less appropriate for space-constrained surface-mount products. For a new design, reserve all 14 package positions in the package diagram but program unused pins as inputs or outputs according to the datasheet. Place decoupling close to VDD and AVSS-related supply pins, respect oscillator and I/O current limits, and validate any configuration relying on EEPROM writes for endurance and timing. This page combines verified manufacturer data, distributor availability, pricing, and qualified replacement information with engineering guidance beyond a basic datasheet summary.

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PIC16F684-I/SL - 8-bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip
PIC16F684-I/SL

PIC16F684-I/SL - 8-bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip

The Microchip Technology PIC16F684-I/SL is an 8-bit flash-based CMOS microcontroller from the PIC16F family, featuring a 20 MHz CPU clock, 3.5 KB (2K x 14 words) of program Flash memory, 128 bytes of RAM, and 256 bytes of EEPROM data memory, all integrated in a 14-pin SOIC package. It provides 12 I/O pins, an enhanced mid-range 14-bit instruction set, and nanoWatt power management for energy-efficient operation. The device supports an industrial operating temperature range of -40C to +85C and a wide supply voltage of 2.0V to 5.5V, enabling use in both 3.3V and 5V systems. An 8-bit microcontroller (MCU) is a small computing system on a single integrated circuit that combines a CPU, memory, and peripherals. PIC microcontrollers from Microchip use a Harvard architecture with separate program and data buses, and the mid-range PIC16 family adds a 14-bit instruction word that delivers higher code density than 12-bit baseline parts. The PIC16F684 sits at the low-pin-count end of this family, designed for cost-sensitive, space-constrained designs where 8 to 14 pins of I/O are sufficient. Key features include a 13-bit program counter capable of addressing up to 8K x 14 program memory space, an integrated 8 MHz internal oscillator, and peripherals such as a 10-bit ADC with 8 channels, Capture/Compare/PWM (CCP) module, enhanced USART, and two comparators. The nanoWatt technology delivers low-power sleep currents suitable for battery-backed and energy-harvesting designs. Architecturally, the PIC16F684 implements the enhanced mid-range core, supporting hardware multiply, interrupt context saving, and a wider instruction set than baseline PICs. Combined with on-chip EEPROM, this provides a flexible platform for parameter storage, calibration data, and field-updatable firmware in industrial and consumer products. Typical applications include sensor interface nodes, low-end motor control, LED driver controllers, battery chargers, small appliance controls, and general-purpose logic replacement in space-constrained PCBs. The wide voltage range also allows use in 2-cell battery and unregulated supply environments. When designing with this device, place decoupling capacitors (0.1 uF typical) close to VDD, and verify that the ICSP/ICD pins are accessible for in-circuit programming. For power-sensitive applications, use the nanoWatt sleep modes with appropriate wake-up sources configured via the interrupt-on-change (IOC) module. This page synthesizes distributor pricing, drop-in alternative part numbers, and practical design notes that are not collected in any single place in the manufacturer datasheet.

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PIC16F684-I/ST - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
PIC16F684-I/ST

PIC16F684-I/ST - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F684-I/ST is an 8-bit Flash-based CMOS microcontroller from the PIC16F family, featuring 3.5KB (2K x 14) of program memory, 128 bytes of SRAM, and 256 bytes of EEPROM data memory. It operates at up to 20MHz instruction execution (200ns instruction cycle) and is housed in a 14-pin TSSOP package with 12 I/O pins. The -I industrial temperature grade supports -40C to +85C operation across a wide 2.0V to 5.5V supply range, making it suitable for both battery-powered and line-powered applications. An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, program memory (Flash/ROM), data memory (RAM), non-volatile EEPROM, and peripherals on one die. Within the embedded hierarchy, the PIC16F684 sits in the mid-range PIC® x14 architecture tier (8-bit MCU -> PIC microcontroller -> RISC microcontroller -> embedded controller -> semiconductor). The 'F' suffix denotes Flash program memory, while the nanoWatt Technology label indicates power-saving modes such as sleep, watchdog timer disable, and low-power oscillator options that drop current draw into the microampere range. Key features of the PIC16F684 include an integrated 10-bit Analog-to-Digital Converter (ADC) with up to 8 channels, two 8-bit timers plus one 16-bit timer, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), a Capture/Compare/PWM (CCP) module, and on-chip comparator peripherals. The device supports In-Circuit Serial Programming (ICSP) via two pins, allowing firmware updates after PCB assembly without removing the MCU. The 14-TSSOP package offers a compact 4.4mm body width for space-constrained designs. The PIC16F684 uses a Harvard RISC architecture with 35 single-word instructions, providing deterministic interrupt latency and predictable code execution. Its 14-bit instruction word (compared to 12-bit PIC baseline parts) extends the addressing range and opcode space, enabling richer peripheral control. The mid-range x14 instruction set is shared across hundreds of PIC16 part numbers, allowing easy code migration to higher- or lower-memory variants. Typical applications include LED lighting control, battery chargers, small appliance control, sensor signal conditioning, smoke detectors, security keypads, and consumer white goods. The combination of onboard EEPROM, ADC, comparators, and PWM makes the PIC16F684 a strong fit for closed-loop mixed-signal products. When designing, ensure ICSPDAT/ICSPCLK lines are brought out to test pads or a header for production firmware loading. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of the supply pin, and reserve the MCLR pin (pin 4) with a 10kohm pull-up and a 100nF to ground for clean in-circuit reset behavior.

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PIC16F684T-I/ML - 8-Bit 20MHz 3.5KB Flash MCU 16-QFN | Microchip
PIC16F684T-I/ML

PIC16F684T-I/ML - 8-Bit 20MHz 3.5KB Flash MCU 16-QFN | Microchip

The Microchip Technology PIC16F684T-I/ML is a 14-pin flash-based 8-bit CMOS microcontroller from the PIC® 16F family, delivering 20MHz operation, 3.5KB (2K x 14 words) of Flash program memory, 128 bytes of RAM, and 256 bytes of EEPROM data memory in a 16-pin QFN (4x4) package with exposed thermal pad. The "T" suffix indicates Tape & Reel packaging, while "I" designates the -40C to +85C industrial temperature range, and "/ML" denotes the QFN package option. What is a PIC16 microcontroller? The PIC16F mid-range family is an 8-bit Harvard-architecture RISC microcontroller line from Microchip, sitting between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families. PIC16F MCUs offer 14-bit instruction words, 35 single-word instructions, 200ns instruction execution, on-chip EEPROM, nanoWatt power management, and a standardized peripheral set including ADC, comparators, PWM, and timers. They are widely used in cost-sensitive embedded designs where deterministic real-time response, low power, and small footprint matter more than raw computational throughput. Key features of the PIC16F684T-I/ML include 12 I/O pins, 11-channel 10-bit ADC, two analog comparators, enhanced PWM/capture/compare modules, an internal 8MHz oscillator, and wide 2.0V to 5.5V operating voltage. The device incorporates nanoWatt power-saving modes that drop standby current into the microamp range, making it suitable for battery-powered applications. On-chip In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD) enable field-upgradeable firmware. Typical applications include battery chargers, LED drivers, small motor control, sensor signal conditioning, remote controls, appliance controllers, and low-cost industrial sensing nodes. The wide voltage range and analog-rich peripheral set let a single chip replace discrete op-amp + comparator circuitry. When designing with this part, place the exposed thermal pad (EP) on a continuous ground copper pour to meet QFN thermal and electrical performance. Decouple VDD with 100nF and bulk 1uF capacitors placed within 5mm of the supply pin. The internal 8MHz oscillator is factory calibrated to within +/-1%, but for timing-critical applications use an external crystal or resonator on OSC1/OSC2 pins.

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PIC16F684T-I/SL - 8-Bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip
PIC16F684T-I/SL

PIC16F684T-I/SL - 8-Bit 20MHz 3.5KB Flash MCU 14-SOIC | Microchip

The Microchip Technology PIC16F684T-I/SL is a low pin-count 8-bit PIC16 flash microcontroller in a 14-pin SOIC (SL) package, featuring 3.5KB (2K x 14) of Flash program memory, 20 MHz CPU clock, and 12 I/O pins. It operates from 2.0V to 5.5V (industrial temp range -40C to +85C, denoted by "I"), making it a flexible solution for 3.3V and 5V embedded designs. The /SL suffix indicates 14-SOIC tape-and-reel packaging per Microchip ordering nomenclature. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), non-volatile data memory (EEPROM), and configurable digital I/O on a single die. The PIC16 family sits within Microchip's mid-range 14-bit instruction architecture, hierarchy: PIC16F6xx -> mid-range PIC16 -> 8-bit PIC microcontroller -> microcontroller -> semiconductor. This category excels at deterministic real-time control with a small instruction set and shallow learning curve compared with 32-bit ARM Cortex-M0 parts. Key features of the PIC16F684 include 128 bytes of RAM, 256 bytes of EEPROM data memory, a 10-bit A/D converter with up to 8 channels, enhanced PWM, comparator module, and on-board oscillator. The device supports In-Circuit Serial Programming (ICSP) and In-Circuit Debugging (ICD) via two pins, eliminating the need for an external programmer socket. The NanoWatt Technology line provides multiple low-power modes (Run, Idle, Sleep) for battery-powered designs. The architecture is built around a RISC-style 14-bit instruction word, 8-level deep hardware stack, and 200 ns instruction execution at 20 MHz. With 35 single-word instructions, code density is high and assembly programming is approachable for legacy designs. Internal oscillator options (8 MHz LFINTOSC, 31 kHz INTOSC) reduce external BOM cost in cost-sensitive applications. Typical applications include LED lighting control, battery chargers, small appliance controls, security and sensor interfaces, automotive body electronics (non-safety), and consumer white-goods user interface panels. The wide 2.0-5.5V range allows direct operation from a single Li-ion cell or a regulated 5V rail. When designing with this part, verify that your chosen debugger/programmer supports the PIC16F6xx family (e.g. PICkit 3, PICkit 4, MPLAB ICD 4) and that the ICSPDAT/ICSPCLK lines are not loaded by the application circuitry during programming. For low-power designs, gate unused peripherals to minimize Iq in Sleep mode (typically a few hundred nA). This page synthesizes distributor pricing, drop-in SOIC-14 alternatives, and practical design notes that go beyond the manufacturer datasheet, organized for fast AEO/GEO citation.

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PIC16F684T-I/ST - 8-bit 20MHz 3.5KB Flash MCU 14-TSSOP | Microchip
PIC16F684T-I/ST

PIC16F684T-I/ST - 8-bit 20MHz 3.5KB Flash MCU 14-TSSOP | Microchip

The Microchip Technology PIC16F684T-I/ST is a 14-pin, 8-bit flash microcontroller based on the mid-range PIC16 (x14) architecture, delivering 20 MHz instruction execution (200 ns instruction cycle) in a 14-TSSOP surface-mount package. It integrates 3.5 KB of Flash program memory (2K x 14 words), 128 bytes of SRAM, and 256 bytes of EEPROM data memory. The device is rated for an industrial operating temperature range of -40 °C to +85 °C and operates from 2.0 V to 5.5 V. What is a PIC16 microcontroller? A PIC16 (Peripheral Interface Controller) is an 8-bit RISC microcontroller family from Microchip Technology built on a Harvard architecture with separate program and data buses. Within the broader hierarchy, PIC16 sits between the baseline PIC10/12/16 families and the higher-performance PIC18/PIC24 families; it is a flash-programmable CMOS MCU belonging to the microcontroller -> embedded controller -> semiconductor category. Mid-range PIC16 devices are characterized by a 14-bit instruction word, 35 single-word instructions, and on-chip peripherals including timers, ADC, comparators, and PWM. Key features include an 8-channel 10-bit ADC, two comparators with hysteresis, a Capture/Compare/PWM (CCP) module, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), and nanoWatt power management that reduces quiescent current below 1 µA in sleep mode. The device exposes 12 I/O pins (11 GPIO plus 1 input-only), supports in-circuit serial programming (ICSP) via two pins, and offers a wide operating voltage window that simplifies battery-powered and 5 V designs. The architecture separates program and data buses for simultaneous instruction fetch and operand access, and the internal 31 kHz and 8 MHz oscillators reduce BOM cost. The -I/ST suffix denotes the industrial temperature grade and 14-pin TSSOP package; the T-suffix indicates tape-and-reel packaging. The 14-TSSOP footprint has a body size of 5.0 mm x 4.4 mm with a 0.65 mm pitch. Typical applications include low-power sensor nodes, white-goods and appliance control, automotive body modules, lighting ballasts, and small consumer appliances. The PIC16F684 is also AEC-Q100 qualified (variants), making it suitable for automotive under-hood and cabin subsystems that require a robust 8-bit controller. When designing, ensure the ICSP/PGD and PGC pins are reserved for programming; place a 0.1 µF decoupling capacitor close to VDD, and use the internal 8 MHz HFINTOSC to minimize external component count. Compared to a switching regulator, the PIC16F693 remains operational during brown-outs as low as 2.0 V. This page synthesizes distributor pricing, same-family drop-in alternatives (e.g., PIC16F684-I/ST, PIC16F684-I/SL) and design notes not found in the manufacturer datasheet.

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PIC16F685-E/P - 20MHz 8-Bit Flash MCU | Microchip
PIC16F685-E/P

PIC16F685-E/P - 20MHz 8-Bit Flash MCU | Microchip

Microchip Technology PIC16F685-E/P is an 8-bit PIC mid-range flash microcontroller with a 20 MHz operating speed, 7 KB (4K x 14) program memory, and a 20-pin PDIP package. It operates across a 2.0 V to 5.5 V supply range and incorporates onboard EEPROM data memory, 256 x 8 bytes of RAM, 18 general-purpose I/O pins, and a 12-channel 10-bit analog-to-digital converter. A PIC microcontroller is a compact programmable controller built around the PIC16 mid-range x14 architecture. Within the product hierarchy, it is an 8-bit RISC microcontroller, a member of the PIC family, and an embedded processing platform used for digital control, data acquisition, and peripheral management. Its flash-based program memory supports field reprogramming, while its integrated EEPROM retains calibration, configuration, or other nonvolatile data without consuming RAM. Key features include 7 KB of flash program memory, 256 bytes of SRAM, 256 bytes of EEPROM, and a 12-channel 10-bit ADC. The 20 MHz clock capability supports faster instruction execution than lower-speed members of the same device family, while the 2.0 V to 5.5 V operating range accommodates common low-voltage embedded systems. The PIC16F685-E/P is identified as an active product in the supplied lifecycle information. The device uses the mid-range x14 instruction architecture and integrates digital I/O with analog measurement. Its 18 I/O pins provide interfaces for switches, sensors, indicators, actuators, and communication peripherals, while the ADC permits direct acquisition of up to 12 analog channels. Onboard EEPROM separates persistent parameter storage from volatile working memory, simplifying designs that must retain setup information through a power cycle. Typical applications include industrial control panels, environmental monitoring, appliance controllers, instrumentation, low-voltage sensor nodes, and compact embedded products requiring a conventional 8-bit control architecture. The 20-pin PDIP package is also well suited to prototypes, educational platforms, through-hole assemblies, and repair-oriented designs where socketed or manually assembled parts are preferred. Designers should verify the exact pin functions, analog-channel mapping, oscillator options, and required decoupling against the manufacturer datasheet before layout. The 2.0 V to 5.5 V device range does not imply that every peripheral or I/O pin has identical voltage limits, so external-interface constraints must be checked separately. This page consolidates the supplied manufacturer and distributor information with lifecycle status, sourcing details, application guidance, and verified same-family replacement information. It is intended to help engineers locate the datasheet, compare the MCU with its industrial-temperature counterpart, and evaluate the PIC16F685-E/P for an embedded control design.

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PIC16F685-E/SO - 8-bit PIC MCU, 7KB Flash, 20MHz, 20-SOIC
PIC16F685-E/SO

PIC16F685-E/SO - 8-bit PIC MCU, 7KB Flash, 20MHz, 20-SOIC

The Microchip Technology PIC16F685-E/SO is a 20-pin, 8-bit Flash-based CMOS microcontroller built on the mid-range PIC16 x14 architecture, operating at up to 20 MHz instruction rate (200 ns instruction cycle). It integrates 7 KB (4K x 14) of Flash program memory, 256 bytes of RAM, 256 bytes of EEPROM data memory, and 18 digital I/O lines in a 20-lead SOIC wide-body package. The device is part of the nanoWatt Technology family, supporting a wide 2.0 V to 5.5 V supply range and multiple low-power modes for energy-conscious embedded designs. What is a PIC16 microcontroller? A PIC16 is a family of 8-bit RISC microcontrollers from Microchip Technology based on a modified Harvard architecture with 14-bit instruction words. PIC16 devices belong to the broader category of microcontrollers (MCU) within the embedded processor hierarchy: PIC16 -> PIC microcontrollers -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. They are widely used for cost-sensitive, low-power, deterministic control tasks where a full 32-bit MCU is over-spec, complementing ARM Cortex-M and higher-end Microchip dsPIC/PIC32 families. Key feature highlights of the PIC16F685 include an integrated 8-channel 10-bit Analog-to-Digital Converter (ADC) with input multiplexing, an Enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART) with an internal baud-rate generator, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C (master/slave), four 8-bit timers (Timer0/Timer2 with prescaler and Timer1/Timer3 with dedicated 16-bit support), dual analog comparators with reference, and a Capture/Compare/PWM (CCP) module. The E suffix indicates the Extended temperature grade (-40°C to +125°C). Architecturally, the PIC16F685 uses a single-cycle 200 ns instruction execution path with a hardware stack of 8 levels and direct/indirect addressing modes. On-chip debug is supported via the In-Circuit Debugger (ICD) interface, and the Flash supports 100K erase/write cycles typical, with EEPROM supporting 1M cycles typical. nanoWatt features such as alternate oscillator modes, two-speed startup, and fail-safe clock monitoring reduce active and idle current for battery-powered applications. Typical applications include consumer appliance control, LED driving and lighting controllers, automotive body and accessory modules, sensor signal conditioning, low-cost industrial automation nodes, and battery-powered IoT edge devices where deterministic 8-bit control, small footprint, and robustness matter more than raw compute. The 20-SOIC package also eases hand-solderable prototyping versus QFN alternatives. When designing with the PIC16F685-E/SO, ensure the MCLR pin has a proper pull-up configuration and that VDDCORE bypass capacitors follow the datasheet reference. Use ICD for firmware bring-up, and leverage the nanoWatt sleep states when average system current must stay in the microamp range. For applications requiring >10-bit ADC or USB, consider migrating to PIC18 or PIC24 families.

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PIC16F685-E/SS - 20MHz 8-Bit Flash MCU | Microchip Technology
PIC16F685-E/SS

PIC16F685-E/SS - 20MHz 8-Bit Flash MCU | Microchip Technology

The Microchip Technology PIC16F685-E/SS is an 8-bit CMOS flash microcontroller with a 20 MHz maximum clock, 7 KB of program Flash memory, 256 bytes of EEPROM data memory, and 18 I/O pins in a 20-pin SSOP package. The device belongs to Microchip's mid-range PIC16 family and combines the PIC mid-range instruction set with integrated Flash program memory and on-board EEPROM for parameter and configuration storage. An 8-bit flash microcontroller is a compact embedded-control device that executes firmware from nonvolatile Flash memory while using EEPROM for data that must survive power loss. The PIC16F685 extends this product hierarchy from the general-purpose 8-bit MCU to the PIC16 mid-range platform, then to a nanoWart low-power microcontroller family designed for cost-sensitive embedded control and low-power operation. The principal device characteristics include an 8-bit architecture, 7 KB Flash program memory, 256 bytes of EEPROM, 256 bytes of RAM, 20 MHz operating frequency, 18 I/O pins, and a 2.0 V to 5.5 V supply-voltage range. These resources support control loops, digital interface handling, sensor acquisition, actuator control, and general-purpose embedded logic. On-chip EEPROM distinguishes the device from flash-only microcontrollers that require external nonvolatile storage. The PIC16F685 family is built around the recognized PIC mid-range core and includes standard features such as on-board EEPROM, programmable I/O, Flash memory, and nanoWart technology. The 18 available I/O pins provide practical connectivity for buttons, indicators, logic signals, communications peripherals, and external control components. Its 20 MHz maximum operating frequency allows the core to process instructions quickly enough for a broad range of compact control tasks. Typical uses include industrial control modules, building and appliance controls, instrumentation, sensor-interface boards, programmable timers, compact power-control products, and general embedded systems. The device is particularly suitable where an application needs reconfigurable embedded firmware, nonvolatile data storage, and a moderate number of I/O connections without adopting a larger processor or external memory device. PCB design should preserve the manufacturer's recommended decoupling and programming access. Use the pin-description table in the Microchip PIC16F685 documentation when assigning the 20 package pins, and verify oscillator, reset, programming, and I/O assignments against the selected device variant. The SSOP land pattern also requires assembly planning for its 0.209-inch package width and relatively long leads. This product record combines the manufacturer family specifications, lifecycle information, package details, pin-location guidance, and application-oriented design considerations. It also distinguishes the exact PIC16F685-E/SS ordering code from related temperature-grade and package variants so engineers can make a controlled replacement decision rather than assuming that every similarly named PIC16 device is drop-in compatible.

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PIC16F685-I/P - 8-Bit 20MHz 7KB Flash MCU 18 I/O DIP-20 | Microchip
PIC16F685-I/P

PIC16F685-I/P - 8-Bit 20MHz 7KB Flash MCU 18 I/O DIP-20 | Microchip

The Microchip Technology PIC16F685-I/P is a 20-pin DIP package variant of the PIC16F685, an 8-bit CMOS flash-based mid-range PIC microcontroller with nanoWatt technology. It integrates 7KB (4K x 14) of Flash program memory, 256 bytes of SRAM, and 256 bytes of EEPROM data memory, while delivering up to 20 MIPS instruction throughput from a 20MHz internal oscillator. The device exposes 18 general-purpose I/O pins, supports a wide 2.0V to 5.5V operating range, and provides on-chip peripherals including an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), two Capture/Compare/PWM modules, an Analog-to-Digital Converter, comparators, and a watchdog timer. Brown-out Reset, Power-On Reset, and In-Circuit Serial Programming complete the embedded feature set. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and peripheral interfaces into one IC. The PIC16F685 belongs to the mid-range 8-bit PIC16F family, which sits beneath the PIC18 and dsPIC/PIC24 families in Microchip's 8-bit and 16-bit taxonomy. Within the broader semiconductor hierarchy, it is part of the embedded processor / microcontroller category, designed for deterministic real-time control rather than application processing. The PIC16F685 family uses Microchip's enhanced mid-range x14 instruction set with only 35 single-word instructions, simplifying code development and reducing compiler overhead. Its nanoWatt power-management features include multiple idle and sleep modes, switchable oscillator sources, and peripheral disable controls that drop the typical supply current well below 1 µA in sleep, making the part suitable for battery-powered designs. Typical applications include white goods and small appliance control, LED lighting drivers, simple sensor signal conditioning, consumer electronics user interfaces, automotive body modules (non-safety), and battery-powered instrumentation where low quiescent current and integrated peripherals reduce BOM cost. Designers should plan the oscillator configuration carefully because the internal 8 MHz HFINTOSC can drift; selecting the 31 kHz LFINTOSC for sleep wake-ups saves power. The ICSPDAT/ICSPCLK pins must be accessible for in-circuit programming and debugging, so pin assignment should reserve them early in PCB layout. The -I suffix indicates the industrial temperature grade (-40 °C to +85 °C); the -E (extended) variant is available for -40 °C to +125 °C operation. The -P suffix denotes the 20-pin PDIP through-hole package, the easiest variant for prototyping and hobbyist use. This page synthesizes distributor pricing, drop-in PIC16F685-I/P alternatives, parametric comparison, and practical design notes that go beyond the manufacturer datasheet summary.

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PIC16F685-I/SO - 8-Bit 20MHz 7KB Flash MCU | Microchip
PIC16F685-I/SO

PIC16F685-I/SO - 8-Bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F685-I/SO is an 8-bit flash-based CMOS microcontroller in the PIC16 mid-range family, offering 20 MHz operation with 7 KB (4K x 14) of flash program memory and 256 bytes of RAM, housed in a 20-pin SOIC package. It is one of the Microchip low-pin-count PIC16F family members built on the standard 14-bit instruction word architecture with 35 single-word instructions and 200 ns instruction execution. On-chip peripherals include an internal oscillator, data EEPROM, comparators, an enhanced capture/compare/PWM (ECCP) module, and nanoWatt power-management features. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program and data memory, and peripheral interfaces onto one IC; PIC16F microcontrollers occupy the well-established mid-range tier of the PIC family, balancing code density, peripheral integration, and ultra-low power for 8-bit embedded designs. The PIC16F685 specifically extends the base PIC16F684 with additional analog and timer peripherals while preserving the same 20-pin footprint and instruction set, making it one of the broadest-function 8-bit options in this pin-count class. Key features include 7 KB of self-programmable flash program memory with up to 100,000 erase/write cycles, 256 bytes of RAM, 256 bytes of data EEPROM, an internal 31 kHz to 8 MHz oscillator with PLL support, an ADC, two comparators, an enhanced CCP module, and a nanoWatt power-managed operating mode offering as little as 50 nA standby current. The wide 2.0 V to 5.5 V operating range allows operation directly from a single Li-ion cell or 5 V regulated rail. The 20-pin SOIC (SO) package provides standard surface-mount handling with a plastic body and lead-free termination. The architecture relies on a Harvard-based RISC core with separate program and data buses, providing deterministic instruction throughput and predictable interrupt latency that is useful for digital control loops. The ECCP module supports bridgeable full-bridge or half-bridge PWM for motor and lighting control, while nanoWatt technology enables sleep currents that suit battery-powered sensor applications. Typical applications include consumer appliance control, sensor conditioning, LED lighting drivers, low-end motor control, automotive interior accessory modules, and remote sensor nodes. The combination of internal oscillator, EEPROM, and nanoWatt sleep current is particularly appealing where the BOM must remain small and the firmware must be field-upgradable. When designing with this device, follow Microchip's recommended decoupling (0.1 microfarad ceramic on VDD) and place the ICSP/ICD connections for in-circuit programming and debugging. For very-low-power designs, validate the typical current values from the device datasheet at your operating voltage and temperature, since nanoWatt mode behavior is temperature-dependent. This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes that complement the official Microchip datasheet and help engineers evaluate the PIC16F685-I/SO for new 8-bit designs.

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PIC16F685-I/SS - 20MHz 8-bit Flash MCU 7KB | Microchip
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 - 20MHz 8-Bit Flash MCU, 20-QFN | Microchip
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 - 20MHz 8-Bit MCU 7KB Flash 18 I/O | Microchip
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 - 8-bit 20MHz 3.5KB Flash MCU | Microchip
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 - 8-Bit 20MHz Flash MCU | Microchip | Embedded Control
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 - 8-bit MCU, 3.5KB Flash, 20MHz, SOIC-20
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 - 20MHz 8-bit MCU 3.5KB Flash | Microchip
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 - 20MHz 8-Bit Flash MCU | Microchip
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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