Circuitos Integrados

PIC16F627AT-E/SO

PIC16F627AT-E/SO - 8-bit Flash MCU, 20MHz, 1.75KB | Microchip

The Microchip Technology PIC16F627AT-E/SO is an 8-bit Flash-based CMOS microcontroller from the PIC16F627A family, offering 1.75KB (1K x 14) of Flash program memory and 224 bytes of RAM, packaged in an 18-pin SOIC (SO) wide-body 300-mil package. The 'A' suffix marks the second-generation silicon, the 'T' suffix denotes tape-and-reel packaging, the 'E' temperature grade designates the extended industrial range of -40C to +125C, and the '/SO' suffix specifies the 18-pin SOIC outline. An 8-bit Flash microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating CPU core, non-volatile Flash program memory, RAM, EEPROM, and a rich set of peripherals into one package. It sits within the hierarchy microcontroller -> embedded controller -> semiconductor IC, and historically defined the low-cost, deterministic, low-power edge-computing class now challenged by 32-bit Cortex-M0 cores. Key features include a 20MHz maximum CPU clock yielding 200ns instruction execution, a Harvard RISC architecture with only 35 single-word instructions, an integrated 4MHz internal oscillator, 128 bytes of EEPROM data memory, a USART for asynchronous serial, a Capture/Compare/PWM (CCP) module, two analog comparators, a programmable voltage reference, and 16 I/O pins with individual direction control. Power is supplied from 2.0V to 5.5V (5V nominal for the /SO variant), and nanoWatt power-management features offer sleep currents in the microamp range. The PIC16F627A core uses a 14-bit instruction word with separate program and data buses, allowing simultaneous fetch and access. Its RISC pipeline executes one instruction per four oscillator cycles, and interrupt handling plus a hardware stack of eight levels simplify real-time firmware. The peripheral set targets analog signal conditioning (comparators + Vref) and digital communication (USART), making it well suited for sensor-interface and motor/relay-control products. Typical applications include consumer appliances, automotive body electronics, industrial control boards, remote controls, security sensor nodes, and battery-powered metering. The 18-pin SOIC provides the smallest footprint variant within the PIC16F627A family, while the 28- and 40-pin siblings add more I/O and analog channels. When designing, validate that the 5V (4.5V-5.5V) supply range of the /SO part matches the system rail, place a 100nF decoupling capacitor within 5mm of VDD, and configure MCLR with the recommended 10k pull-up. The integrated 4MHz oscillator eliminates an external crystal in cost-sensitive designs but trades absolute accuracy for BOM reduction. This page synthesizes current distributor pricing, drop-in alternatives within the SOIC-18 footprint, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F627AT-E/SS

PIC16F627AT-E/SS - 8-bit Flash MCU 1.75KB 20MHz SSOP-20 | Microchip

The Microchip Technology PIC16F627AT-E/SS is a flash-based, 8-bit CMOS microcontroller in the PIC16 family, delivering 20MHz maximum clock speed, 1.75KB (1K x 14 words) of program Flash memory, and 224 bytes of SRAM, all integrated in a 20-pin SSOP package. It supports supply voltages from 3.0V to 5.5V, with the tested operating point at 4.5V to 5.5V, and provides 16 digital I/O lines plus a 10-bit ADC, dual analog comparators, internal 4MHz oscillator, and 128 bytes of EEPROM data memory. The "A" silicon revision adds nanoWatt power management features that dramatically reduce active and sleep currents versus the legacy PIC16F627. What is a PIC16 microcontroller? The PIC16 family sits in the 8-bit RISC microcontroller tier (PIC10/12/16/18/24/32), itself a sub-category of microcontrollers and embedded controllers within integrated circuits. PIC16 devices use a 14-bit instruction word, 35 single-word instruction set, and 200ns instruction execution at 20MHz, designed for cost-sensitive deterministic control where predictable timing matters more than raw throughput. They are positioned between PIC10/12 baseline parts (smaller, lower pin count) and PIC18 mid-range parts (16-bit instruction, more peripherals), giving engineers a balance of capability and code density. Key features include nanoWatt Technology for sub-microamp sleep currents, an internal 4MHz precision oscillator (eliminating external crystal cost), Capture/Compare/PWM (CCP) module, USART for serial communications, and a programmable brown-out reset. The PIC16F627AT-E/SS also integrates a high-performance comparator with programmable reference, watchdog timer with its own on-chip RC oscillator, and an In-Circuit Serial Programming (ICSP) interface for field-upgradable firmware. The architecture combines a Harvard-style program/data bus separation, 8-level deep hardware stack, and direct/indirect addressing modes that simplify C and assembly porting. The "A" generation brings 8MHz internal oscillator precision and enhanced PWM resolution versus older PIC16F627 silicon, making it attractive for designers needing more accurate timing without external components. Typical applications include consumer appliance controls, battery-powered sensor nodes, IR remote controls, LED drivers, small motor controllers, and industrial sensor interfaces. The wide operating voltage range plus nanoWatt sleep makes it a frequent choice for mains-powered and battery-backed products where standby current dominates the energy budget. When designing with this device, budget for ICD/ICSP header pads even on production boards to allow firmware updates and in-field debug; the ICSP pins (RB6/RB7) must be accessible. The 224-byte SRAM and 1.75KB Flash constrain firmware complexity, so design code accordingly or migrate to PIC16F88/PIC16F819 if more memory is needed. This page consolidates distributor pricing tiers, drop-in same-package alternatives from Microchip's PIC16 family, and PCB-level design notes that go beyond what the manufacturer datasheet alone offers, helping engineers shorten the selection cycle.

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PIC16F627AT-I/SO

PIC16F627AT-I/SO - 8-Bit 20MHz MCU 1.75KB Flash SOIC-18 | Microchip

The Microchip Technology PIC16F627AT-I/SO is an 8-bit Flash-based CMOS microcontroller from the PIC16F mid-range family, featuring a 20 MHz maximum clock speed, 1.75 KB of Flash program memory (1K x 14 words), 224 bytes of RAM, and 128 bytes of EEPROM data memory, housed in an 18-pin SOIC package. The "T" suffix denotes a Tape & Reel packaging variant, while "I" indicates the industrial temperature grade (-40C to +85C), and "SO" specifies the 18-pin Small Outline IC package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), non-volatile data storage (EEPROM), and programmable I/O peripherals on one die. The PIC16F627A belongs to the PIC16F family within the broader mid-range PIC architecture hierarchy: PIC16F -> mid-range 8-bit MCU -> RISC microcontroller -> embedded controller. This taxonomy places it above simple digital logic but below 32-bit ARM Cortex-M parts in computational capability, making it ideal for cost-sensitive, deterministic, low-power applications. Key features include the nanoWatt power management technology offering multiple low-power sleep modes (down to 100 nA typical standby current), two analog comparators, a programmable voltage reference, one 16-bit capture/compare/PWM module, a USART for serial communication, and a 4 MHz internal RC oscillator that can reduce or eliminate external clock components. The device supports an operating voltage range of 3.3V to 5.5V and provides 16 digital I/O pins with high-current sink/source capability. Technically, the PIC16F627A executes most instructions in a single 200 ns instruction cycle at 20 MHz (4 MHz oscillator input, 4:1 PLL-equivalent internal division), with a 14-bit instruction word and 8-bit data path. The Harvard architecture separates program and data buses, eliminating fetch bottlenecks. The enhanced flash memory cell supports in-circuit serial programming (ICSP) via two pins (RB6/RB7), enabling field updates and end-of-line calibration without removing the device from the board. Typical applications include appliance control (washing machines, microwave ovens), industrial sensor interfaces, automotive body electronics, security and access control panels, low-cost remote controls, and battery-powered instrumentation. The internal oscillator and on-chip EEPROM reduce BOM cost in space-constrained designs. Design consideration: When migrating firmware between PIC16F627A and PIC16F628A/648A variants, verify the configuration word and address mapping because the larger-flash parts add memory-mapped registers at fixed offsets. Also note that the SOIC-18 footprint is 0.65 mm pin pitch - not compatible with the 2.54 mm DIP-18 footprint without PCB rework. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer datasheet to accelerate sourcing and design decisions.

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PIC16F627AT-I/SS

PIC16F627AT-I/SS - 8-Bit 20MHz 1.75KB Flash MCU | Microchip | SSOP-20

The Microchip Technology PIC16F627AT-I/SS is an 8-bit CMOS Flash-based microcontroller from the PIC16 mid-range family, featuring a 20MHz CPU clock, 1.75KB (1K x 14) of Flash program memory, 224 bytes of SRAM, and 128 bytes of EEPROM in a 20-pin SSOP (5.30mm height, lead-free) package. It executes instructions in a 200ns instruction cycle, packs Microchip's powerful PIC RISC architecture, and offers 16 I/O pins with a 4.5V to 5.5V single-supply operating range. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and programmable I/O peripherals. The PIC16 mid-range family occupies the middle of Microchip's 8-bit PIC portfolio - simpler than PIC24/dsPIC but more capable than PIC10/12 baseline devices, and is widely used in cost-sensitive embedded control. The PIC16F627A/AT family introduced nanoWatt Technology, providing multiple low-power modes (sleep, watchdog timer-based wake, internal RC oscillator) that drop supply current into the microamp range during idle intervals. Key features include an integrated 4MHz internal RC oscillator (eliminating external crystals for low-cost designs), a hardware USART for serial communications, a capture/compare/PWM module, two analog comparators with programmable references, and 128 bytes of EEPROM for non-volatile user data storage. The 35 single-word instruction RISC core enables code density comparable to larger 8-bit MCUs while fitting in the 1.75KB Flash budget. Architecturally, the PIC16F627A uses a 14-bit instruction word, Harvard architecture with separate program and data buses, and a 16-level hardware stack. The 'A' silicon revision adds the USART module and enhanced comparators versus the original PIC16F627. The 'T' suffix in PIC16F627AT indicates Tape and Reel packaging for high-volume assembly, while the 'I' indicates the industrial -40C to +85C operating temperature range. Typical applications include low-cost consumer appliances, automotive body electronics, security and alarm systems, remote controls, lighting ballasts, motor control auxiliary logic, and small-format sensor interface boards. The wide SSOP-20 footprint allows hand-soldering and prototyping alongside high-volume SMD assembly. When designing with this part, engineers should note that the PIC16F627A has been superseded by the PIC16F18444 in many new designs - identical pinout but more memory and peripherals. For new designs, the PIC16F18444-I/SS is recommended unless legacy code compatibility dictates the original 627A/AT. The internal oscillator eliminates two external pins but trades absolute frequency accuracy against BOM cost. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16F628A/648A family, and practical design considerations not aggregated in a single datasheet view.

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PIC16F627T-04/SS

PIC16F627T-04/SS - 8-bit Flash MCU, 4MHz, SSOP-20 | Microchip

The Microchip Technology PIC16F627T-04/SS is a flash-based 8-bit CMOS RISC microcontroller belonging to the PIC16F62X mid-range family, operating up to 4 MHz clock speed in a 20-pin SSOP package. According to the manufacturer datasheet, the device integrates 1.75 KB of flash program memory, 224 bytes of SRAM, and 128 bytes of EEPROM data memory, and is supported by a 5.0 V nominal supply rail within a 4.5 V to 5.5 V operating range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, non-volatile EEPROM, and peripheral blocks such as timers, comparators, and I/O ports into one package. Microcontrollers sit within the broader semiconductor hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16F62X family uses a Harvard architecture in which program and data buses are separated, allowing instruction fetch and operand read to occur in a single 200 ns instruction cycle at 20 MHz. Key features include 16 I/O pins with individually programmable direction, two analog comparators with programmable on-chip voltage reference, a Watchdog Timer with its own on-chip RC oscillator for reliable operation, Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST). Multiplexed MCLR and programmable weak pull-ups on PORTB further reduce external component count, while an internal 4 MHz RC oscillator enables designs without an external crystal. Architecturally, the device combines a RISC instruction set with only 35 single-word instructions, an 8-level deep hardware stack, and direct, indirect, and relative addressing modes. The CMOS process delivers low power consumption suitable for battery-friendly applications while maintaining the noise immunity needed for industrial environments. Typical applications include appliance control, automotive subsystems, industrial monitoring, remote controls, and low-end consumer products. The wide operating voltage and built-in peripherals also support sensor interfacing and simple closed-loop control. The device is well-suited as a replacement for legacy 8-bit designs that require flash re-programmability rather than one-time programmable (OTP) memory. When designing with this part, ensure decoupling capacitors are placed close to VDD/VSS and that the configuration bits for oscillator selection and watchdog are reviewed before code release. The 'T' suffix in the part number indicates tape-and-reel packaging, and the '04' suffix specifies the 4 MHz maximum operating frequency. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet to help engineers shorten the component selection cycle.

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PIC16F627T-04E/SO

PIC16F627T-04E/SO - 8-bit 4MHz Flash MCU 1.75KB | Microchip

The Microchip Technology PIC16F627T-04E/SO is an 8-bit flash-based CMOS microcontroller from the PIC16F62X family, featuring a 4MHz maximum oscillator frequency, 1.75KB (1K x 14) of flash program memory, 224 bytes of SRAM, and 128 bytes of EEPROM data memory, packaged in an 18-pin SOIC (7.50mm width) with tape-and-reel packaging. Operating from a 2.0V to 5.5V supply with 16 I/O pins, the device delivers 200ns instruction execution time through its RISC-based Harvard architecture. A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable peripherals designed for embedded control tasks. The PIC16F62X family sits within Microchip's mid-range 8-bit portfolio, positioned between baseline (PIC10/12/16) and enhanced mid-range (PIC16F1xxx) families. These MCUs combine deterministic RISC execution with flash-based in-system programmability, making them ideal for cost-sensitive, low-power, real-time control applications. Key features include power-on reset (POR), brown-out detect (BOD), watchdog timer (WDT) with dedicated on-chip RC oscillator, power-up timer (PWRT), oscillator start-up timer (OST), two analog comparators with programmable on-chip voltage reference, programmable weak pull-ups on PORTB, and a multiplexed MCLR pin. The internal comparator module supports programmable input multiplexing from device pins and the internal VREF, allowing flexible analog signal conditioning without external components. Architecturally, the PIC16F627T-04E/SO uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The 14-bit instruction word supports bit-oriented, byte-oriented, and literal operations across 35 single-word instructions. The 'E' suffix indicates the Enhanced temperature range (-40C to +125C), while the 'T' suffix denotes tape-and-reel packaging for high-volume assembly. The '04' speed grade specifies a 4MHz maximum oscillator. Typical applications include appliance control, automotive body electronics (non-safety), industrial sensor interfaces, lighting controllers, remote controls, security systems, low-end motor control, and battery-powered instrumentation. The 16 high-current I/O pins can directly drive LEDs, eliminating driver transistors in many indicator circuits. When designing with this MCU, allocate adequate decoupling (100nF ceramic plus bulk) close to VDD pins and ensure the MCLR pull-up is correctly configured for in-circuit serial programming. The '04' 4MHz speed grade limits instruction throughput to 5MIPS, so real-time loops should be sized accordingly; consider PIC16F628 or PIC16F88 variants if higher performance or more memory is required.

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PIC16F627T-20/SS

PIC16F627T-20/SS - 8-bit Flash MCU 1.75KB 20MHz SSOP20 | Microchip

The Microchip Technology PIC16F627T-20/SS is an 8-bit flash-based CMOS microcontroller from the PIC16F62X family, featuring 1.75 KB of Flash program memory, 224 bytes of SRAM, and 128 bytes of EEPROM, packaged in a 20-pin SSOP (5.30 mm width) with tape-and-reel packaging. It executes instructions at up to 20 MHz from a 4.5 V to 5.5 V supply and integrates 16 digital I/O pins, two analog comparators with a programmable on-chip voltage reference, a USART module, and a capture/compare/PWM (CCP) peripheral. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working RAM, peripherals, and I/O on one die. The PIC16F62X family uses a Harvard RISC architecture, meaning program and data buses are physically separate, allowing simultaneous instruction fetch and operand access. This design delivers deterministic throughput (one instruction per instruction cycle, except for branches) which is attractive for hard-real-time control loops in industrial and automotive subsystems. Microcontrollers sit in the broader hierarchy: MCU -> embedded controller -> processing subsystem -> electronic system. Key features of the PIC16F627T-20/SS include 16 I/O pins with individually programmable direction, high-current sink/source capable of directly driving LEDs, a Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST), Brown-out Detect (BOD), and a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator for fail-safe recovery. Programmable weak pull-ups on PORTB reduce external component count, while the internal 4 MHz RC oscillator enables designs without an external crystal. The 35-instruction RISC instruction set simplifies code generation and code-density optimization. In-system programming via ICSP allows firmware updates after PCB assembly. The 20 MHz clock supports a 200 ns instruction cycle, well-suited to bit-banging protocols, PWM generation for motor or LED dimming, and USART baud rates up to several hundred kbps. Typical applications include low-cost remote controls, appliance front panels, sensor interface nodes, small motor control boards, LED lighting controllers, and battery-powered instruments. The wide 5 V supply range and integrated peripherals reduce BOM cost in space-constrained consumer designs. When designing with this MCU, select an appropriate oscillator configuration (internal RC vs external crystal) early because it affects timing accuracy. The 'T' suffix denotes tape-and-reel packaging for high-volume SMT assembly, and the '20' suffix indicates the 20 MHz maximum clock speed grade. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design considerations compiled from the manufacturer datasheet and authorized distributors as of 2026-09-21.

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PIC16F627T-20E/SO

PIC16F627T-20E/SO - 8-Bit 20MHz PIC MCU, 1.75KB Flash | Microchip

The Microchip PIC16F627T-20E/SO is an 8-bit Flash-based CMOS microcontroller from the PIC16F62X family, operating at up to 20 MHz with 1.75 KB (1K x 14) of Flash program memory, 224 bytes of SRAM and 128 bytes of EEPROM data memory, housed in a tape-and-reel 18-pin SOIC package. The -20E suffix denotes 20 MHz maximum clock speed with the Extended industrial temperature grade, and the /SO suffix identifies the 18-lead SOIC wide-body SMD package. It is supplied from a single 3.0 V to 5.5 V rail (the -20E variant operates across 4.5 V to 5.5 V per the PIC16F62X family specification). What is a PIC microcontroller? A PIC (Peripheral Interface Controller) microcontroller is a compact, self-contained computer-on-a-chip built around a Harvard RISC architecture, where program and data buses are physically separated to allow simultaneous instruction fetch and operand read. Microcontrollers sit at the bottom of the embedded computing hierarchy - they integrate CPU, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), non-volatile data memory (EEPROM), and a fixed set of peripherals into a single IC. They are a category of microcontrollers and a member of the broader embedded processor family. Key features of the PIC16F627T-20E/SO include 16 bidirectional I/O pins with individually programmable direction, an enhanced Mid-Range 8-bit core with 14-bit instructions, two analog comparators with a programmable on-chip voltage reference (CVREF), a USART module for asynchronous/synchronous serial communication, and a CCP module for capture/compare/PWM. The device also integrates a Brown-out Detector (BOD), Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST) and a Watchdog Timer (WDT) with its own dedicated internal RC oscillator for reliable operation. Programmable weak pull-ups on PORTB and a multiplexed MCLR pin simplify board design. Architecturally, the PIC16F62X family uses a 14-bit instruction word, an 8-level deep hardware stack, and direct, indirect and relative addressing modes. The device supports INTOSC, EC, RC, HS and XT oscillator modes, giving designers flexibility to trade off cost, EMI and accuracy. The internal 4 MHz and 37 kHz RC oscillators further reduce bill-of-materials cost. Typical applications include appliance control, security and access systems, remote controls, industrial automation (sensor interfacing, relay drivers), automotive body electronics (comfort, lighting, mirror modules), low-end consumer electronics, and battery-powered instrumentation. The wide operating voltage and integrated analog peripherals make the part especially attractive for cost-sensitive designs that need a small BOM and robust on-chip protection features. When designing with this part, budget approximately 1.5 V of headroom on the analog comparators and confirm that CCP/USART pin assignments do not collide with the analog comparator inputs. Decouple VDD/VSS with a 100 nF ceramic capacitor placed within 5 mm of the pins. This page synthesizes distributor pricing, drop-in alternatives and practical design notes that are not present in the raw Microchip datasheet, making it easier to evaluate the part for new designs and second-source decisions.

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PIC16F627T-20E/SS

PIC16F627T-20E/SS - 8-bit 20MHz 1.75KB Flash MCU | Microchip

The Microchip Technology PIC16F627T-20E/SS is an 8-bit RISC flash-based CMOS microcontroller in a 20-pin SSOP package operating at up to 20 MHz, integrating 1.75 KB (1K x 14) of Flash program memory, 224 bytes of RAM, and 128 bytes of EEPROM data memory. The "E" suffix designates the Extended industrial temperature range of -40C to +125C, while the "T" indicates Tape and Reel packaging and "-20" denotes the 20 MHz maximum oscillator frequency. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a configurable set of peripheral blocks (timers, ADC, communication ports, GPIO). The PIC16F627 belongs to Microchip's mid-range PIC16 family built on a Harvard architecture, in which program and data buses are separate to allow instruction fetch and operand read in a single cycle. Within the broader taxonomy, the PIC16F627 sits as: microcontroller -> 8-bit MCU -> flash MCU -> RISC MCU -> embedded controller. Key features include 16 I/O pins with individual direction control, two analog comparators with programmable on-chip voltage reference, a Universal Synchronous/Asynchronous Receiver/Transmitter (USART) module, an internal 4 MHz oscillator with software calibration, a Watchdog Timer (WDT) with its own on-chip RC oscillator, Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT), and Oscillator Start-up Timer (OST). High current sink/source capability allows direct LED drive from the I/O pins, eliminating external drivers in many human-interface designs. The PIC16F627 employs a 14-bit instruction word and a RISC pipeline capable of most instructions executing in one instruction cycle (200 ns at 20 MHz). The Harvard bus, 35 single-word instructions, and 8-level deep hardware stack deliver deterministic interrupt latency, which makes the device suitable for real-time control loops such as motor commutation and sensor polling. Internal phase-locked loop options and the calibrated 4 MHz internal oscillator reduce external component count. Typical applications include appliance control (washing machines, microwave ovens, coffee makers), battery chargers, remote controls, small industrial sensors, automotive body electronics (non-safety), and low-cost consumer products. The combination of internal oscillator, comparator module, and small SSOP footprint makes it well suited to space-constrained designs that still need deterministic interrupt behavior. When designing with this part, note that the "E" temperature grade is essential for outdoor, automotive under-hood, or industrial environments. Place decoupling capacitors (100 nF plus 10 uF bulk) within a few millimeters of VDD/VSS pins, and respect the in-circuit serial programming (ICSP) pin assignments (RB6/RB7 for ICSPCLK/ICSPDAT) when laying out the PCB. This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the same PIC16F62X family, and practical design considerations not collected in the manufacturer datasheet alone.

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PIC16F627T-20I/SO

PIC16F627T-20I/SO - 8-bit PIC MCU 1.75KB Flash 20MHz SOIC-18 | Microchip

The Microchip PIC16F627T-20I/SO is an 8-bit Flash-based CMOS microcontroller from the PIC16F62X family, delivering up to 20 MHz instruction execution in a surface-mount SOIC-18 package. It integrates 1.75 KB of Flash program memory and 224 bytes of RAM, plus 128 bytes of EEPROM, with 16 I/O pins supporting direct LED drive and individual direction control. The device is specified for an industrial temperature range of -40C to +85C and a supply voltage of 3.0 V to 5.5 V. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a configurable set of peripheral blocks such as timers, comparators, communication interfaces, and general-purpose I/O. Within the broader semiconductor taxonomy, microcontrollers belong to the embedded processor category, which itself sits under digital logic ICs and integrated circuits. PIC microcontrollers use a Harvard architecture with separate program and data buses, a RISC instruction set, and are well known for low power consumption, deterministic timing, and a small footprint that suits cost-sensitive embedded designs. Key features of the PIC16F627T-20I/SO include two on-chip analog comparators with a programmable voltage reference, a Watchdog Timer with its own dedicated RC oscillator, Brown-Out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST). Multiplexed MCLR, programmable weak pull-ups on PORTB, and an internal RC oscillator reduce external component count. Compared with baseline PIC16 devices, this family adds a Universal Synchronous/Asynchronous Receiver-Transmitter (USART) for serial communication, making it suitable for point-to-point and multidrop links. Typical applications include appliance controls, sensor signal conditioning front-ends, LED lighting controllers, simple motor or fan control, automotive body and accessory modules, and remote control transmitters. The combination of analog comparators, internal oscillator, and USART is well matched to products that need a few serial commands in and a few discrete outputs out, without paying for a larger MCU. When designing with this part, allow at least 100 nF of bypass capacitance close to VDD and AVSS, and reserve the MCLR pin as a reset input rather than repurposing it as I/O if reset stability matters. The internal 4 MHz RC oscillator can reduce BOM cost but external crystal accuracy is recommended for USART timing.

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PIC16F627T-20I/SS

PIC16F627T-20I/SS - 8-bit 20MHz MCU, 1.75KB Flash, SSOP-20

The Microchip Technology PIC16F627T-20I/SS is a RISC-based 8-bit Flash microcontroller from the PIC16F62X family, operating at up to 20 MHz with 1.75 KB (1K x 14) of program memory and 224 bytes of RAM, housed in a 20-pin SSOP (shrink small outline) package. The "T" suffix denotes tape-and-reel packaging, "20" specifies the 20 MHz maximum clock, "I" indicates the industrial temperature range (-40C to +85C), and "/SS" denotes the SSOP-20 package. What is an 8-bit Flash microcontroller? An 8-bit Flash microcontroller is a single-chip computer that integrates a CPU, non-volatile Flash program memory, RAM, and peripherals on one die. Flash memory enables in-circuit reprogramming, which differentiates Flash MCUs from older OTP (one-time-programmable) or ROM-only devices. Within the broader taxonomy, the PIC16F627 belongs to: microcontroller (MCU) -> 8-bit MCU -> Flash MCU -> PIC16 family -> PIC16F62X sub-family. These devices typically serve as cost-effective embedded controllers in appliances, sensors, and small consumer products. The PIC16F627T-20I/SS delivers 16 programmable I/O pins with individual direction control, high-current sink/source capable of directly driving LEDs, two analog comparators with a programmable on-chip voltage reference, a 10-bit PWM module, and a USART for serial communication. Built-in reliability features include Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST), Brown-out Detect (BOD), and a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator for safe operation. Architecturally, the PIC16F62X family uses a Harvard architecture that separates program and data buses, allowing simultaneous instruction fetch and data access. This, combined with a 14-bit instruction word and a single-cycle ALU, achieves near 1:1 MIPS-to-MHz efficiency. The supply voltage range of 2.0V to 5.5V supports both 3.3V and 5V system designs, with a maximum DC current of 25 mA per I/O pin. Typical applications for the PIC16F627T-20I/SS include small appliance control, sensor signal conditioning, automotive interior accessories, security system panels, IR remote control transmitters, low-end consumer electronics, battery chargers, and LED lighting controllers. The combination of analog comparators, PWM, and USART makes it well-suited for closed-loop control tasks where a full DSP is unnecessary. When designing with this MCU, choose the internal 4 MHz RC oscillator for cost-sensitive designs, or an external crystal for timing-critical serial communication. Decoupling capacitors (100 nF plus 10 uF) should be placed within 5 mm of the VDD pin. For in-system programming, the ICSP interface uses RB6 (clock) and RB7 (data) shared with general-purpose I/O. This page synthesizes distributor pricing, same-brand drop-in alternatives from the PIC16F62X and PIC16F62XA families, and practical design notes not consolidated in the Microchip datasheet PDF. Engineering decisions across these parameters directly affect BOM cost, board space, and long-term firmware portability.

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PIC16F628-04/P

PIC16F628-04/P - 8-Bit 4MHz 3.5KB Flash MCU | Microchip DIP-18

The Microchip Technology PIC16F628-04/P is an 8-bit Flash-based CMOS microcontroller in the PIC16F mid-range family, offered in an 18-pin PDIP (DIP-18) through-hole package with 3.5KB (2K x 14 words) of program Flash, 224 bytes of RAM, and 128 bytes of EEPROM. The "-04" speed grade designates a 4 MHz maximum oscillator input, supporting a 200 ns instruction cycle, while the "/P" suffix identifies the plastic DIP-18 package. The device is built around Microchip's enhanced PIC16 RISC core with 35 single-word instructions, an 8-level deep hardware stack, and dual internal comparators plus a USART module. A PIC microcontroller (MCU) is a compact, self-contained computer-on-a-chip integrating an 8-bit CPU, non-volatile Flash program memory, RAM, EEPROM data memory, and configurable digital I/O on a single die. PIC16 mid-range parts (PIC16 -> PIC microcontroller family -> 8-bit MCU -> microcontroller -> embedded processor) target cost-sensitive, deterministic embedded designs where predictable instruction timing, low power, and ease of programming with the free MPLAB X IDE outweigh the throughput of 32-bit Cortex-M devices. Key features of the PIC16F628-04/P include 16 digital I/O pins with independent direction control, two analog comparators, a capture/compare/PWM (CCP) module, an enhanced USART for serial communications, an internal 4 MHz oscillator option, and a wide operating voltage range of 3.0 V to 5.5 V. The device consumes very low quiescent current in Sleep mode (typically < 1 uA) and supports in-circuit serial programming (ICSP) through two pins, eliminating the need for a separate programmer socket. Architecturally, the PIC16F628 uses a Harvard design with separate program and data buses, a hardware multiplier-free ALU, and direct register-mapped I/O that gives the core its signature deterministic 1-cycle instruction execution except for branches. The 4 MHz speed grade limits the oscillator input frequency to 4 MHz (8 MHz internal /2) but the same silicon is offered in -20 variants for 20 MHz operation, and pin-compatible upgrades include the PIC16F628A-I/P with the enhanced nanowatt silicon and 20 MHz maximum frequency. Typical applications include low-cost consumer appliances, hobbyist and educational projects, simple motor and lighting controllers, battery-powered sensor nodes, and legacy industrial replacement boards. The DIP-18 package remains popular for breadboarding, training kits, and through-hole production runs where field serviceability is valued. When designing with this MCU, derate oscillator frequency below 4 MHz to ensure timing margins across temperature, and reserve the ICSPDAT/ICSPCLK pins (RB7/RB6) so the device can be reprogrammed on the board without removing it. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, and is verified against Microchip's published PIC16F628 datasheet.

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PIC16F628-04/SO

PIC16F628-04/SO - 4MHz 8-bit Flash MCU 3.5KB | 18-SOIC

The Microchip Technology PIC16F628-04/SO is a flash-based 8-bit CMOS microcontroller from the PIC® 16F mid-range family, delivering 4 MHz CPU performance with 200 ns instruction execution in an 18-pin SOIC wide-body package. It integrates 3.5 KB of flash program memory (2K x 14), 224 bytes of RAM, 128 bytes of EEPROM data memory, and 16 digital I/O pins. The device supports operating voltages from 3.3 V to 5.5 V (extended) and 4.5 V to 5.5 V (standard), with two analog comparators and a hardware USART for serial communication. A mid-range 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, memory, and peripherals. The PIC16F62X architecture is classified within the taxonomy: 8-bit MCU -> mid-range MCU -> RISC microcontroller -> embedded controller -> semiconductor. The "F" suffix indicates flash memory, allowing in-circuit reprogramming. This category of device is widely used in cost-sensitive embedded designs where deterministic execution, low power, and simple peripheral integration outweigh the need for high clock speed. Key features include the 35-instruction RISC instruction set, single-cycle execution (except branches), interrupt handling, power-on reset, brown-out detection, a watchdog timer with dedicated oscillator, and a programmable code protection mechanism. Compared with earlier PIC16C5X parts, the 16F628 adds flash memory, internal oscillator calibration, and on-chip EEPROM, eliminating external program memory and reducing BOM cost for small embedded nodes. Typical applications span consumer electronics, appliance controls, security keypads, sensor interfaces, small motor drives (gate-driven, with external FETs), lighting controllers, and hobby/educational platforms such as the PICkit 1 baseline development environment. Pin-compatible migration paths within the PIC16F62X family allow designers to scale flash, RAM, and peripherals without PCB rework. When designing with this part, pay attention to the analog-comparator input impedance and the USART baud-rate error at low clock frequencies. Use a 4 MHz crystal or the calibrated internal 4 MHz oscillator to free board space, and reserve the MCLR pin with a 10 kΩ pull-up if in-circuit serial programming (ICSP) is needed. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not consolidated in the manufacturer datasheet, giving engineers an at-a-glance engineering summary for sourcing and migration decisions.

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PIC16F628-04E/P

PIC16F628-04E/P - 8-Bit 4MHz PIC MCU, 3.5KB Flash | Microchip

The Microchip Technology PIC16F628-04E/P is a FLASH-based 8-bit CMOS microcontroller from the PIC16F62X family, delivering up to 4 MIPS performance in an 18-pin PDIP through-hole package. The device integrates 3.5KB (2K x 14 words) of program Flash, 224 bytes of RAM, and 128 bytes of EEPROM data memory, all in a 35-instruction RISC core with only 35 single-word instructions to learn. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for embedded control tasks such as sensor reading, actuator driving, and protocol handling. Within the broader semiconductor taxonomy, MCUs belong to the microcontroller family -> embedded processor -> integrated circuit. The PIC16F62X mid-range family sits between Microchip's baseline PIC10/12/16 architectures and its enhanced PIC18 devices, providing a balance of low cost, deterministic interrupt handling, and easy migration across 6-to-100 pin packages. Key features of the PIC16F628-04E/P include 16 programmable digital I/O pins, two analog comparators, a USART module, an internal 4 MHz RC oscillator, and a Capture/Compare/PWM (CCP) module. The on-chip peripherals reduce BOM cost and PCB area by eliminating external timing, communication, and comparator components. Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST), and a Watchdog Timer (WDT) with its own dedicated RC oscillator ensure reliable operation in electrically noisy environments and during power transients. The architecture uses a Harvard-design RISC core with separate program and data buses, allowing simultaneous instruction fetch and operand access. The wide operating voltage range of 3.0V to 5.5V (the "-04E" extended temperature grade spans -40C to +125C) makes the device suitable for industrial, automotive aftermarket, and consumer products where supply rails vary and temperature swings are wide. Typical applications include HVAC thermostat control, small appliance motor control, remote sensor nodes, lighting controllers, security keypads, and low-cost industrial sensor interfaces. The combination of on-chip EEPROM and USART allows engineers to add calibration data storage and wired serial communication without an external EEPROM or transceiver IC. When designing with this part, ensure the MCLR pin is tied to VDD through the recommended 10 kohm pull-up if hardware reset is not required, and verify that the chosen 4 MHz instruction rate (DC = 4 MHz spec; the "04" suffix) matches the timing budget; the "20" speed-grade variant runs up to 20 MHz / 5 MIPS for time-critical loops. This page synthesizes distributor pricing, drop-in 18-PDIP alternatives (same package, pin-to-pin compatible), and practical design notes not consolidated on the manufacturer datasheet or single distributor listing.

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PIC16F628-04E/SO

PIC16F628-04E/SO - 8-bit 4MHz Flash MCU, 3.5KB, 18-SOIC | Microchip

The Microchip Technology PIC16F628-04E/SO is an 8-bit flash-based CMOS microcontroller from the PIC® 16F family, running up to 4MHz internal instruction execution and packaged in an 18-pin SOIC (SO). It integrates 3.5KB (2K x 14 words) of flash program memory, 224 bytes of RAM, and 128 bytes of EEPROM data memory in a single chip, with 16 digital I/O lines that can sink or source enough current to drive LEDs directly. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, programmable I/O peripherals, and supporting analog or communication blocks. The PIC16F628 sits inside the broader PIC16 mid-range family, which in turn belongs to the 8-bit microcontroller category that includes competitors such as the Atmel AVR ATtiny series and the 8051 family; these MCUs occupy the entry-level tier of the embedded system hierarchy (MCU -> microcontroller -> embedded processor -> semiconductor IC). Key features include an internal 4MHz RC oscillator with calibration, programmable brown-out detect (BOD), a watchdog timer (WDT) with its own on-chip RC oscillator for reliable operation, power-on reset (POR), power-up timer (PWRT) and oscillator start-up timer (OST), an analog comparator module with programmable on-chip voltage reference and programmable input multiplexing, programmable weak pull-ups on PORTB, in-circuit serial programming (ICSP), and low-voltage programming support. The 'E' suffix denotes an extended automotive temperature grade of -40C to +125C. The PIC16F628 uses Microchip's enhanced mid-range 8-bit RISC architecture with only 35 single-word instructions, allowing most instructions to execute in a single instruction cycle (200 ns at 20 MHz, 1 us at 4 MHz). Its Harvard architecture separates program and data buses, and the device supports both internal and external oscillator modes plus software-selectable low-speed clock operation. Typical applications include automotive body and chassis electronics, appliance controls, industrial sensor interfaces, low-end remote controls, and hobbyist/educational projects that benefit from the PIC's mature toolchain (MPLAB X IDE, XC8 compiler, PICkit programmers). The internal RC oscillator and on-chip EEPROM simplify BOM by eliminating external timing and non-volatile storage parts. When designing with this device, note that the 'E' temperature grade makes it suitable for -40C to +125C environments but the '04' speed grade limits operation to 4 MHz; for 20 MHz designs choose the PIC16F628-20/SO. Always reserve the MCLR pin or use the internal MCLR configuration, and follow Microchip AN529 for migration paths to PIC16F628A or PIC16F18444 if extended peripherals or longer product life are required. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond a raw restatement of the manufacturer datasheet, helping engineers select, source, and qualify the PIC16F628-04E/SO for production.

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PIC16F628-04E/SS

PIC16F628-04E/SS - 4MHz 8-bit Flash MCU 3.5KB SSOP-20 | Microchip

The Microchip Technology PIC16F628-04E/SS is an 8-bit flash-based CMOS microcontroller from the PIC16F mid-range family, operating at up to 4 MHz with 3.5 KB (2K x 14) of program memory, housed in a 20-pin SSOP package. The device integrates 224 bytes of RAM, 128 bytes of EEPROM, 16 digital I/O lines, and on-chip peripherals including two analog comparators with programmable voltage reference, a Capture/Compare/PWM module, USART, and three timers. An 8-bit microcontroller is a single-chip computer that processes data 8 bits at a time using a Harvard or von Neumann architecture; the PIC16F family specifically uses a RISC-based Harvard core with separate program and data buses. Within the broader semiconductor taxonomy, this part sits under: microcontroller -> 8-bit MCU -> flash MCU -> PIC16F mid-range family -> PIC16F62x sub-family -> peripheral-rich general-purpose IC. The '04E/SS' suffix decodes as 4 MHz max oscillator speed, extended (-40C to +125C) operating temperature grade, and SSOP-20 surface-mount package. Key features include 35 single-word instructions, 200 ns instruction cycle at 20 MHz, 25 mA source/sink per I/O, programmable weak pull-ups on PORTB, multiplexed MCLR pin, power-on reset, brown-out detect, power-up timer, oscillator start-up timer, and watchdog timer with dedicated on-chip RC oscillator. The 16 I/O pins can directly drive LEDs without external drivers. Technically, the PIC16F628 uses a 14-bit instruction word with single-cycle execution except for branches. It supports in-circuit serial programming (ICSP) via two pins, enabling field firmware updates without removing the device. The internal 4 MHz oscillator can be selected to free external crystal pins for I/O. Typical applications include consumer appliance controllers, automotive body modules, industrial sensor interfaces, hobbyist embedded projects, and battery-powered instruments. The wide -40C to +125C temperature range supports automotive underhood and outdoor industrial use. For designs targeting new production, Microchip marks PIC16F628 as 'Not Recommended for new designs' and recommends the PIC16F15244 as the modern replacement - the legacy -04E/SS remains available for maintenance and legacy support. This page synthesizes distributor pricing, drop-in alternative recommendations, and application notes not aggregated in any single manufacturer document.

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PIC16F628-04I/P

PIC16F628-04I/P - 8-Bit 4MHz PIC MCU 3.5KB Flash | Microchip

The Microchip PIC16F628-04I/P is an 8-bit RISC PIC microcontroller featuring a PIC16 CPU core, 3.5KB (2K x 14) of Flash program memory, 224 bytes of SRAM, and 128 bytes of EEPROM data memory, packaged in a through-hole 18-pin PDIP. It operates at a maximum clock speed of 4MHz from a 3.0V to 5.5V supply and offers 16 digital I/O pins, one USART, and a 10-bit ADC subsystem via the comparator and Capture/Compare/PWM (CCP) module. What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is an 8-bit RISC microcontroller family from Microchip Technology, designed around a Harvard-architecture CPU with separate program and data buses. PIC microcontrollers integrate a CPU, non-volatile Flash program memory, data RAM, EEPROM, and configurable peripherals into a single chip. The PIC16F mid-range family targets cost-sensitive embedded applications requiring deterministic performance, low power, and small footprint, sitting between the baseline PIC10/12 families and the enhanced PIC18 family in capability. Key features of the PIC16F628-04I/P include 4MHz internal/external oscillator operation, internal 4MHz RC oscillator, programmable brown-out reset (BOR), low-voltage programming, 128 bytes of EEPROM for non-volatile parameter storage, and 16 I/O pins with individual direction control. The device supports In-Circuit Serial Programming (ICSP) via two pins, enabling firmware updates without removing the part from the board. An on-chip voltage reference and 10-bit ADC-compatible comparator module simplify analog signal acquisition. The architecture uses a 14-bit instruction word with single-cycle execution for branch instructions and two-cycle for most others. The device includes two 8-bit timers (Timer0, Timer2) and one 16-bit timer (Timer1), a Capture/Compare/PWM (CCP) module, a hardware USART for asynchronous/synchronous serial, and a synchronous serial port (SSP) supporting SPI and I2C. Power-down current drops to the low microampere range when SLEEP is invoked. Typical applications include HVAC thermostat controls, security and alarm panels, remote controls, sensor interface modules, automotive interior lighting, low-end industrial control, and any general-purpose 5V embedded design where 3.5KB of Flash and 16 I/O pins are sufficient. The wide 3.0V to 5.5V range supports both 3.3V and 5V systems. When designing with the PIC16F628-04I/P, ensure decoupling capacitors (100nF + 10uF) are placed within 5mm of VDD/VSS pins, MCLR is tied to VDD through a 10k resistor with optional decoupling, and unused I/O pins are configured as outputs low to minimize power consumption. The device is offered in a 300-mil PDIP-18 package and is not recommended for new designs; Microchip suggests migrating to the PIC16F18444 or PIC16F628A family for new projects. This page synthesizes distributor pricing, drop-in alternative MPNs from Microchip's same-package family, and practical PCB design notes that are not consolidated in any single manufacturer datasheet.

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PIC16F628-04I/SO

PIC16F628-04I/SO - 8-bit 4MHz Flash MCU 3.5KB | Microchip

The Microchip Technology PIC16F628-04I/SO is an 8-bit PIC® mid-range flash-based microcontroller running at 4 MHz, packaged in an 18-pin SOIC (SO) outline and qualified for the industrial -40°C to +85°C temperature range. According to the Microchip product page and DigiKey listing, the device integrates 3.5 KB (2K x 14) of flash program memory, 224 bytes of SRAM, 128 bytes of EEPROM, and 16 digital I/O pins with high-current sink/source capability for direct LED drive. What is a PIC16 mid-range flash microcontroller? The PIC16 family is Microchip's classic 8-bit RISC architecture designed around a 14-bit instruction word, 35 single-word instructions and 200 ns instruction execution. Within the broader taxonomy it sits below 16-bit PIC24/dsPIC parts and 32-bit PIC32 SAM devices, and it targets cost-sensitive, deterministic embedded control where ARM Cortex-M0/M0+ is unnecessary. The 04I speed grade ("-04") denotes a 4 MHz oscillator maximum and the "I" suffix denotes industrial temperature grade. Key features include two analog comparators with a programmable on-chip voltage reference, a USART module for asynchronous serial communication, a capture/compare/PWM (CCP) peripheral, two 8-bit timers plus one 16-bit timer, and 10-bit resolution PWM. The flash program memory is in-circuit serial programmable (ICSP) via two pins, allowing field firmware updates without removing the device from the board. Power-on reset, brown-out reset, watchdog timer and power-saving SLEEP mode are all on-chip. The PIC16F628 architecture uses a Harvard-design RISC core with separate program and data buses, internal 4 MHz oscillator and an external oscillator option. The device replaces the older PIC16F84 footprint-compatible parts while adding hardware USART, comparators and a wider instruction set, making it a popular upgrade for legacy designs. Typical applications include remote control transmitters, HVAC thermostat controls, small appliance controllers, sensor signal conditioning, battery chargers and automotive interior accessories. The 16 I/O count and SOIC-18 footprint also make it a fit for hand-held instrumentation where PCB area is constrained. When designing, ensure the Vdd range of 3.0 V to 5.5 V and adequate bulk decoupling; place a 100 nF ceramic close to Vdd and a 10 µF electrolytic on the supply rail. For ICSP programming, reserve pins RB6 and RB7 and do not load them with low-impedance circuitry that prevents in-circuit programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F628-20/P

PIC16F628-20/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F628-20/P is an 8-bit Flash-based CMOS microcontroller from the mid-range PIC16 family, delivering 20 MHz maximum clock speed with 200 ns instruction execution and only 35 single-word instructions. Housed in an 18-pin PDIP (Plastic Dual-In-Line Package) with through-hole mounting, the device integrates 3.5 KB (2K x 14) of Flash program memory, 224 bytes of RAM, and 128 bytes of EEPROM data memory, with 16 digital I/O pins across PORTA and PORTB. What is an 8-bit Flash microcontroller? An 8-bit Flash microcontroller is a single-chip computer that fetches, decodes, and executes 8-bit-wide instructions from non-volatile Flash program memory, providing in-system reprogrammability via ICSP. The PIC16F628 belongs to the mid-range PIC16 family, which sits between the baseline PIC10/12/16 family and the enhanced PIC18 family in Microchip's taxonomy. As a member of the broader category of microcontrollers (MCU) > microcomputer > embedded processor > semiconductor, the PIC16F628 combines on-chip peripherals, RISC architecture, and Flash storage to replace discrete logic in embedded designs. Key features include an integrated 4 MHz internal oscillator (selectable), Power-on Reset (POR), Power-up Timer (PWRT), Oscillator Start-up Timer (OST), Brown-out Detect (BOD), Watchdog Timer (WDT) with its own on-chip RC oscillator, multiplexed MCLR pin, programmable weak pull-ups on PORTB, and a USART module for serial communication. The device operates from 3.0V to 5.5V and supports in-circuit serial programming (ICSP) for field upgrades. Architecturally, the PIC16F628 uses a Harvard-style RISC core with separate program and data buses, enabling simultaneous instruction fetch and operand access for predictable 200 ns cycle times at 20 MHz. The on-chip peripherals are accessed through a memory-mapped register architecture, with interrupt handling driven by a 14-bit instruction word and a hardware stack. Compared to legacy ROM-based PICs, the Flash implementation enables low-volume prototyping without mask charges. Typical applications include consumer appliance control, HVAC thermostat logic, industrial sensor conditioning, automotive interior accessories, remote controls, and battery-powered instrumentation. The wide supply range (3.0V-5.5V) makes the part equally suitable for 5V industrial systems and 3.3V battery-operated designs. When designing with this MCU, ensure decoupling capacitors of 0.1 uF are placed close to VDD, and that the MCLR pin is properly biased with a 10 kohm pull-up to VDD for normal operation. For low-power modes, consult the SLEEP instruction and oscillator switching options documented in the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including supply-chain lifecycle flags and verified 18-pin PDIP drop-in equivalents.

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PIC16F628-20E/P

PIC16F628-20E/P - 8-bit MCU 20MHz 3.5KB Flash DIP-18 | Microchip

The Microchip Technology PIC16F628-20E/P is an 8-bit PIC16-family CMOS Flash microcontroller (MCU) running at 20 MHz with 3.5 KB (2K x 14) of Flash program memory, 224 bytes of SRAM and 128 bytes of EEPROM, housed in an 18-pin PDIP (DIP-18) through-hole package. It integrates 16 general-purpose I/O pins, a 10-bit ADC-free analog comparator block, two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM (CCP) module, a USART, and on-chip peripherals including Brown-out Detect, Power-on Reset, Power-up Timer, Watchdog Timer with its own RC oscillator, and programmable weak pull-ups on PORTB. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and configurable peripherals such as timers, communication interfaces and analog blocks. Within the broader taxonomy, a microcontroller belongs to the integrated circuit (semiconductor) family and specifically to the embedded-control sub-category. The PIC16F628 sits in Microchip's mid-range PIC16F6xxx family of 8-bit Harvard-architecture MCUs, which target low-cost, low-power general-purpose embedded control in industrial and consumer equipment. Key features of this part include 20 MHz maximum clock (200 ns instruction cycle), 4.5-5.5 V single-supply operation, internal 4 MHz and 37 kHz RC oscillators, hardware USART for serial communication, and 100,000 erase/write cycle Flash endurance. The 'E' suffix denotes the Enhanced (-40C to +125C) industrial operating temperature range, and '20' denotes the 20 MHz speed grade. Architecturally, the device uses a RISC instruction set with 35 single-word instructions, a 14-bit instruction word, an 8-level hardware stack, and Harvard-separated program and data buses. Power-saving features include SLEEP mode, internal oscillator options, and programmable code protection. Compared with newer PIC16F1xxx parts, the PIC16F628 trades peripheral richness for simplicity and low cost. Typical applications include appliance control, sensor-interface front ends, LED drivers, small motor-control boards, hobby/education platforms, and legacy industrial replacement designs. Its DIP-18 through-hole package also makes it popular for breadboard prototyping, university labs, and field-service repairs where socketed parts simplify replacement. Because Microchip marks the family 'Not Recommended for new designs', the part is best suited to maintenance of existing installations rather than new platform starts. When designing with this device, place a 100 nF decoupling capacitor within 5 mm of VDD and a bulk capacitor on the MCLR/VPP reset line if in-circuit programming is required. Use the internal oscillator when PCB area or BOM cost must be minimized, but select an external crystal when timing accuracy or USART baud-rate stability matters. The DIP-18 footprint also enables hand-soldered rework without hot-air equipment.

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PIC16F628-20E/SO

PIC16F628-20E/SO - 8-bit 20MHz PIC MCU 3.5KB Flash | Microchip

The Microchip Technology PIC16F628-20E/SO is an 8-bit flash-based PIC16 family microcontroller operating at up to 20 MHz, integrating 3.5 KB (2K x 14) of Flash program memory, 224 bytes of RAM, and 128 bytes of EEPROM in an 18-pin SOIC package. The 'E' suffix denotes the extended (-40C to +125C) operating temperature range, while the 'SO' package code identifies the 300-mil small-outline IC, supplied in tube packaging for production-line assembly. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), non-volatile data storage (EEPROM), and configurable digital and analog peripherals onto one die. PIC16-series MCUs belong to Microchip's mid-range 8-bit RISC architecture family, sitting within the broader PIC10/12/16 mid-range hierarchy that spans 6 to 100 pins and supports migration with little code change. They are widely used as drop-in 8051 and other 8-bit MCU replacements where deterministic timing, low cost, and proven toolchain support are priorities. Key features include 16 I/O pins with individual direction control, high-current sink/source for direct LED drive, two analog comparators with a programmable on-chip voltage reference (VREF) module, programmable input multiplexing from device and reference inputs, and comparator outputs available externally. The part integrates power-on reset (POR), power-up timer (PWRT), oscillator start-up timer (OST), brown-out detect (BOD), watchdog timer (WDT) with its own on-chip RC oscillator, multiplexed MCLR pin, and programmable weak pull-ups on PORTB for noise-immune digital I/O. Architecturally the device uses a 14-bit instruction-word Harvard RISC core with a single accumulator (W) and 4-bank RAM/Flash/EEPROM addressing, plus an 8-level deep hardware stack. Instruction cycles execute in 4 clock periods, giving 200 ns per instruction at 20 MHz. The CMOS process keeps typical active current around 2 mA at 4 MHz and standby current under 1 uA with the WDT enabled, making it suitable for battery-powered or always-on designs. Typical applications include appliance control boards, sensor signal conditioning with on-chip comparators, automotive body and lighting subsystems, hobbyist and educational projects, simple SMPS housekeeping, low-end motor control, and replacement of legacy 16F84A/PIC16C84 designs where extra peripherals and Flash memory are needed. Designers transitioning from PIC16F84A can use the same instruction set with expanded address space and additional on-chip peripherals. When designing with this MCU, observe the supply voltage range of 3.0 V to 5.5 V (Flash operation) and decouple VDD with at least 0.1 uF plus 10 uF bulk capacitance near the package. The MCLR reset pin typically requires a 10 kohm pull-up to VDD; add a transient suppressor if the pin is exposed to board-level ESD. For new designs, prefer the PIC16F628A successor which adds internal oscillator, ICD debugging and additional peripherals while keeping the same pinout. This page synthesizes distributor pricing, drop-in compatible same-family alternatives, and practical PCB/temperature design notes not found in the manufacturer datasheet alone.

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PIC16F628-20E/SS

PIC16F628-20E/SS - 8-bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F628-20E/SS is an 8-bit flash-based CMOS microcontroller from the PIC16 family, delivering 20MHz operation, 3.5KB (2K x 14) of flash program memory, 224 bytes of RAM, and 128 bytes of EEPROM in a 20-pin SSOP package. It implements Microchip's enhanced mid-range RISC architecture with only 35 single-word instructions, supporting 200ns instruction execution at the rated 20MHz clock. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (ROM/Flash), data memory (RAM), and integrated peripherals such as timers, communication interfaces, and I/O ports. The PIC16 family occupies the 8-bit mid-range tier of Microchip's PIC hierarchy (PIC10/12/14/16/18 -> 8-bit MCU -> microcontroller -> semiconductor) and is targeted at cost-sensitive embedded control where deterministic interrupt latency and low power are valued. This part falls under Microchip's PIC16 mid-range product line. Key features include 16 I/O pins, an internal 4MHz precision oscillator (selectable), two analog comparators, a USART module, a capture/compare/PWM (CCP) module, brown-out detect (BOD), power-on reset (POR), power-up timer (PWRT), oscillator start-up timer (OST), watchdog timer (WDT) with its own RC oscillator, and in-circuit serial programming (ICSP). The 'E' suffix denotes the extended industrial temperature grade of -40C to +125C. Programmable weak pull-ups on PORTB and code protection round out the feature set. The device operates from 3.0V to 5.5V (the '04' variant) or 4.5V to 5.5V at the full 20MHz speed grade. CMOS technology with nanoWatt power management enables very low standby current (typical < 1uA). The Harvard bus architecture separates program and data memory to allow simultaneous fetch and read/write in a single instruction cycle. Typical applications include industrial control, automotive body electronics, smart sensors, consumer appliances, remote controls, low-cost data loggers, and battery-powered instrumentation. The extended temperature range makes the PIC16F628-20E/SS well suited to harsh environments where commercial-grade parts would fail. When designing with this MCU, note that the 'E' temperature grade requires verification of the analog comparator and internal oscillator behavior at extreme temperatures. Designers migrating from the older PIC16F84 will find similar peripheral mapping but with substantially more memory and a richer peripheral set.

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PIC16F628-20I/P

PIC16F628-20I/P - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F628-20I/P is an 8-bit flash-based CMOS microcontroller from the PIC® mid-range family, operating at up to 20 MHz with 3.5KB (2K x 14 words) of on-chip flash program memory and 224 bytes of RAM, housed in a 18-pin PDIP (P) through-hole package. It integrates 16 digital I/O pins, an internal 4 MHz oscillator, a USART, a capture/compare/PWM module, two analog comparators, and 128 bytes of EEPROM data memory on a single die, eliminating many external components commonly needed on legacy PIC designs. What is a PIC16 mid-range microcontroller? A PIC16F-series microcontroller is an 8-bit RISC CMOS MCU built on Microchip's Harvard architecture. Within the semiconductor hierarchy it sits under: microcontroller -> 8-bit MCU -> mid-range PIC16 family -> flash-programmable MCU. It executes a single instruction per clock cycle (200 ns at 20 MHz), has a 14-bit instruction word, and is programmed using the PIC16 instruction set. Key features include: 20 MHz maximum clock with 200 ns instruction cycle; 3.5KB flash program memory; 224 bytes SRAM; 128 bytes EEPROM; 16 I/O pins with individually configurable direction; an internal 4 MHz RC oscillator; a hardware USART for serial communication; two on-chip analog comparators with programmable reference; one Capture/Compare/PWM (CCP) module; and an ICD (In-Circuit Debugger) interface. The architecture is based on a 14-bit instruction word with 35 single-word instructions, a hardware multiplier is absent, and the device uses a von-Neumann-style data path with Harvard program/data memory separation. The integrated analog comparators and PWM make the part suitable for closed-loop control without external ICs. Typical applications include HVAC fan and damper control, small appliance controllers, automotive interior lighting and body electronics, security and alarm panels, low-cost remote sensor transmitters, and hobby/education platforms where the classic 18-pin PIC footprint is expected. The 18-pin PDIP package remains the most familiar form factor for breadboard-based prototyping. When designing, note that the "I" suffix indicates the industrial temperature grade (-40C to +85C). The 20 MHz speed grade requires VDD of 4.5V-5.5V; below 4.5V the oscillator cannot reliably hit 20 MHz. Place a 100 nF decoupling capacitor within 5 mm of VDD and a 10 uF bulk capacitor near the package. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F628-20I/SO

PIC16F628-20I/SO - 8-Bit 20MHz PIC MCU 3.5KB Flash | Microchip

The Microchip Technology PIC16F628-20I/SO is a mid-range PIC16 family 8-bit CMOS flash microcontroller featuring a 20 MHz maximum clock speed, 3.5 KB (2K x 14) of Flash program memory, and 224 bytes of RAM, all housed in an 18-pin SOIC package. Built on the well-known PIC RISC architecture, the PIC16F628 executes instructions in 200 ns and supports only 35 single-word instructions, making it powerful yet easy to program. The device operates from 3.0 V to 5.5 V and provides 16 digital I/O pins across two ports, plus integrated peripherals such as the USART, capture/compare/PWM modules, comparators, and an internal oscillator. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash), data memory (RAM), and peripheral interfaces into one IC. MCUs sit at the bottom of the embedded-computing stack: they execute firmware, drive GPIO pins, and service interrupts from analog and digital peripherals. Within that stack, PIC microcontrollers belong to the 8-bit RISC MCU family, an architecture category that prioritizes deterministic instruction timing and low-power operation over raw computational throughput. The PIC16F628 is the iconic mid-range member of this family, widely adopted in industrial control, automotive subsystems, and hobbyist projects. Key features of the PIC16F628-20I/SO include the Flash-based program memory that enables in-circuit serial programming (ICSP), an internal 4 MHz oscillator with software-selectable calibration, dual analog comparators, a 10-bit PWM module with capture/compare, a hardware USART for asynchronous serial communication, and a programmable brown-out reset. Per the manufacturer datasheet, the device supports 100,000 erase/write cycles on its Flash memory and retains data for more than 40 years. The PIC16F628-20I/SO leverages an enhanced Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The 35-instruction RISC set is fully orthogonally addressable, so any register can act as an accumulator, which simplifies compiler design and minimizes code density. The device integrates multiple low-power modes (SLEEP, RC_RUN) that drop quiescent current below 1 microampere for battery-friendly designs. Typical applications include industrial control boards, appliance controls, automotive body modules, low-end consumer electronics, and remote sensor platforms that need moderate compute at minimum power. For new designs, Microchip recommends the PIC16F15244, since this PIC16F628 is flagged as Not Recommended for New Designs (NRND) on the official product page. When designing with the PIC16F628-20I/SO, plan around the 18-pin SOIC package: the device multiplexes analog inputs onto digital I/O, so care is needed when routing traces that share comparator and ADC pins. Always include decoupling capacitors on VDD and use the ICSP header for firmware updates. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in any single manufacturer datasheet.

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PIC16F628-20/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip

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PIC16F628-20E/SO - 8-bit 20MHz PIC MCU 3.5KB Flash | Microchip

PIC16F628-20E/SS - 8-bit 20MHz 3.5KB Flash MCU | Microchip

PIC16F628-20I/P - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

PIC16F628-20I/SO - 8-Bit 20MHz PIC MCU 3.5KB Flash | Microchip