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PIC16F628T-20E/SO - 8-Bit 20MHz 3.5KB Flash MCU | Microchip | 18-SOIC
PIC16F628T-20E/SO

PIC16F628T-20E/SO - 8-Bit 20MHz 3.5KB Flash MCU | Microchip | 18-SOIC

The Microchip Technology PIC16F628T-20E/SO is an 8-bit PIC microcontroller running at 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. It features 16 I/O pins, two analog comparators with a programmable on-chip voltage reference, a Capture/Compare/PWM module, a USART, and a 16-level deep hardware stack. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, and peripheral interfaces such as timers, communications, and analog blocks. Within the broader power-management and embedded hierarchy, an MCU sits below microprocessors and provides deterministic real-time control for embedded systems. The PIC16F family specifically belongs to the mid-range 8-bit PIC architecture, balancing code density and peripheral integration for cost-sensitive applications. Key features include an enhanced Flash program memory rated for 100,000 erase/write cycles, internal 4 MHz and 37 kHz RC oscillators, an analog comparator with programmable hysteresis, and power-managed modes such as Sleep, Idle, and a low-power Timer1 oscillator. The device operates from 3.0V to 5.5V across the -40C to +125C industrial temperature range, making it suitable for harsh environments. It supports in-circuit serial programming (ICSP) via the RB6/RB7 pins and the MCLR reset pin. Architecturally, the PIC16F628T-20E/SO uses a 14-bit instruction word with an 8-level hardware stack and 35 single-word instructions, allowing compact code generation. The integrated peripherals - including the USART, CCP module, comparators and 16 I/O pins - remove the need for external logic in typical control designs. Typical applications include industrial automation controllers, consumer appliances, sensor signal conditioning, automotive body electronics, LED lighting controllers, and hobby/educational embedded projects. The PIC16F628 is one of the most widely documented and supported mid-range PIC microcontrollers for entry-level through intermediate designs. A key design consideration: at 20 MHz the device draws approximately 10 mA active current, so always include decoupling capacitors (100 nF + 10 uF) close to VDD/VSS, and reserve the MCLR pin for proper in-circuit serial programming access. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F628T-20E/SS - 8-bit Flash MCU, 20MHz, 3.5KB | Microchip
PIC16F628T-20E/SS

PIC16F628T-20E/SS - 8-bit Flash MCU, 20MHz, 3.5KB | Microchip

The Microchip Technology PIC16F628T-20E/SS is a flash-based 8-bit CMOS microcontroller from the PIC16 mid-range family, delivering 20 MHz maximum clock speed from a Harvard RISC architecture in a 20-pin SSOP (SS) surface-mount package. The device integrates 3.5 KB of Flash program memory, 224 bytes of SRAM, and 128 bytes of EEPROM data memory, providing a self-contained compute platform for embedded control designs. The /E temperature grade indicates an extended operating range suitable for industrial environments. What is an 8-bit flash microcontroller? An 8-bit flash microcontroller is a small, single-chip computer built around an 8-bit data path, on-chip flash program memory, RAM, and a rich set of peripherals. Within the broader semiconductor taxonomy, the PIC16F628 belongs to microcontrollers (MCUs) → embedded controllers → microprocessors and controllers → semiconductors. Its RISC-based mid-range core executes most instructions in one oscillator cycle, giving roughly 200 ns instruction time at 20 MHz — a strong performance figure for an entry-level industrial MCU. Key features of the PIC16F628T-20E/SS include an integrated 20 MHz internal/external oscillator, an analog comparator module, a Capture/Compare/PWM (CCP) module, a USART for serial communication, and 11 digital I/O pins multiplexed across PORTA and PORTB. On-chip peripherals such as 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 RC oscillator give the device robust autonomous operation without external supervisory components. The PIC16F628 architecture uses a 14-bit instruction word with 35 single-word instructions, simplifying code generation and reducing firmware footprint. The Harvard bus separates program and data memories, allowing instruction fetch and operand read to occur in the same cycle. The CMOS process with nanoWatt technology offers very low power consumption across sleep and active modes. Typical applications include industrial control systems, appliance controls, automotive body electronics, sensor interfaces, low-end remote controls, and hobbyist/maker projects where a small-footprint 8-bit MCU with onboard EEPROM and a USART simplifies the bill of materials. The 20-pin SSOP package and wide 4.5–5.5 V supply range also suit battery-backed instrumentation. When designing with this part, ensure the oscillator configuration bits (Fosc) are programmed to match the chosen clock source, since the PIC16F628 supports internal 4 MHz, internal 37 kHz, and external crystal/resonator modes. Place decoupling capacitors within 5 mm of VDD and use the internal weak pull-ups on PORTB where possible to minimize external component count. This page synthesizes distributor pricing, drop-in alternatives, and engineering design notes not found in the manufacturer datasheet alone, providing practical decision support for sourcing and second-source qualification.

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PIC16F628T-20I/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
PIC16F628T-20I/SS

PIC16F628T-20I/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16F628T-20I/SS is a flash-based 8-bit CMOS microcontroller from the mid-range PIC16F family, featuring a 3.5KB (2K x 14) flash program memory, 224 bytes of RAM, 128 bytes of EEPROM, and 16 I/O pins in a 20-pin SSOP package. It operates at up to 20 MHz instruction-clock speed (200 ns instruction cycle) across a 3.0V to 5.5V supply voltage range, with an industrial-grade operating temperature of -40 °C to +85 °C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (flash or ROM), volatile data memory (RAM), EEPROM for persistent user data, and configurable digital peripherals. PIC16F-series MCUs use Microchip's enhanced mid-range RISC core with only 35 single-word instructions, so almost every instruction executes in one instruction cycle. The PIC16F628T-20I/SS sits within the hypernym hierarchy: 8-bit microcontroller -> PIC16 mid-range MCU -> PIC16F62x family -> flash-based PIC MCU -> Microchip PIC microcontroller portfolio. Key features of the PIC16F628T-20I/SS include: an integrated 4 MHz internal oscillator (no external crystal required for many designs); two analog comparators with a programmable on-chip voltage reference; a USART module for asynchronous/synchronous serial communication; a 16-bit capture/compare/PWM module and an 8-bit timer/counter; flash program memory with 100K endurance cycles; and brown-out reset (BOR), power-on reset (POR), power-up timer (PWRT), oscillator start-up timer (OST), and watchdog timer (WDT) with a dedicated on-chip RC oscillator. The architecture uses a Harvard bus (separate program and data memory paths), allowing instruction fetch and operand read to occur in the same cycle. CMOS process technology gives the part its low-power characteristics, including very low power-down current typical of PIC mid-range parts and several oscillator operating modes (internal RC, external RC, crystal, and LP modes) selected by configuration fuses. Typical applications include low-cost embedded control nodes (appliance controllers, sensor hubs, simple motor/solenoid drivers), automotive body-electronics subsystems (interior lighting, fan control, sensor interfaces), hobby and education boards, replacement of legacy PIC16F84/PIC16F627 designs requiring more RAM and EEPROM, and battery-powered instrumentation where the internal oscillator and brown-out reset are advantageous. When designing with this part, use the 20-pin SSOP land pattern and respect the I/O current-source/-sink limits when driving LEDs directly. MPLAB X IDE and MPLAB XC8 (or legacy Hi-Tech PICC) are the recommended toolchains, and the PICkit 5 in-circuit debugger supports the PIC16F62x family for production-ready programming. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, comparison parameters, and practical design notes that are not found on the manufacturer datasheet alone.

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PIC16F630-E/ML - 8-bit Flash MCU, 1.75KB, 12 I/O, QFN-16 | Microchip
PIC16F630-E/ML

PIC16F630-E/ML - 8-bit Flash MCU, 1.75KB, 12 I/O, QFN-16 | Microchip

The Microchip PIC16F630-E/ML is a CMOS Flash-based 8-bit PIC microcontroller housed in a 16-pin QFN (ML) package with extended temperature range (-40C to +125C). It integrates 1.75 KB of Flash program memory, 64 bytes of SRAM, and 128 bytes of EEPROM, delivering 200 ns instruction execution with only 35 single-word instructions for easy programming. The device features 12 digital I/O pins, one analog comparator, and an internal 4/8/20 MHz configurable oscillator. A microcontroller (MCU) is a single-chip computer containing a processor core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and configurable peripherals on one integrated circuit. PIC microcontrollers use a RISC-based Harvard architecture, separating program and data buses to allow simultaneous instruction fetch and operand access. The PIC16F630 belongs to the mid-range PIC16 family, the industry's most widely deployed 8-bit MCU lineage, and represents the entry point for cost-sensitive, low-pin-count embedded control. Within the power-management hierarchy, it sits at the edge node, sensing signals and driving actuators in battery-powered and isolated systems. Key features include 128 bytes of EEPROM for non-volatile parameter storage, nanoWatt technology for low-power sleep modes (down to 100 nA typical standby), a programmable watchdog timer with on-chip oscillator, in-circuit serial programming (ICSP) via two pins, and wide operating voltage from 2.0 V to 5.5 V. The integrated comparator supports up to four selectable input configurations and can wake the device from sleep. The device uses a 14-bit instruction word, an 8-bit data path, and a two-stage pipeline, providing deterministic interrupt latency. The internal oscillator is factory calibrated to ±1% across the commercial temperature range, eliminating the need for an external crystal in many cost-sensitive designs and reducing BOM count to a minimum of one decoupling capacitor and one bulk cap. Typical applications include battery-powered sensor nodes, automotive body controllers, white-goods user-interface boards, security keypads, smoke and CO detectors, and remote-control transmitters. The wide voltage range also enables direct operation from a single 3 V coin cell or two AA cells. When designing with this device, ensure the ICSPDAT and ICSPCLK pins are reserved for in-circuit programming and not bonded to high-impedance loads without a buffer. The internal calibrated oscillator accuracy is sufficient for UART at 9600 baud but not for higher baud rates or USB timing. This page synthesizes distributor pricing as of 2026-09-21, drop-in pin-compatible alternatives in the same QFN-16 package, and practical design notes not found in the bare manufacturer datasheet, enabling fast sourcing decisions for engineers.

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PIC16F630-E/P - 8-bit Flash MCU, 1.75KB, 20MHz, 14-PDIP | Microchip
PIC16F630-E/P

PIC16F630-E/P - 8-bit Flash MCU, 1.75KB, 20MHz, 14-PDIP | Microchip

The Microchip PIC16F630-E/P is a 14-pin PDIP Flash-based 8-bit CMOS microcontroller built on Microchip's enhanced mid-range PIC16 core, featuring 1.75KB (1K x 14) of Flash program memory, 64 bytes of SRAM, 128 bytes of EEPROM, and 12 digital I/O pins operating at up to 20MHz instruction clock. It belongs to the PIC16F630/676 family, where the PIC16F630 omits the 10-bit ADC present on the PIC16F676, and instead adds one analog comparator plus nanoWatt power management. Background Knowledge: A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash/ROM), data memory (RAM/EEPROM), and configurable peripherals such as timers, comparators, ADC, and communication modules. The PIC16 mid-range family uses a 14-bit instruction word RISC architecture with 35 single-word instructions, executing one instruction per instruction cycle (200ns at 20MHz), which simplifies deterministic real-time control. Within the broader taxonomy, PIC16F630 sits in the 8-bit MCU class -> general-purpose MCU -> microcontroller -> embedded computing -> semiconductor. Key differentiating features include: ultra-low-power nanoWatt technology with sleep currents as low as 100nA, integrated 4MHz internal oscillator (selectable via configuration bits), one analog comparator with programmable reference, 8 MHz / 32 kHz oscillator options, in-circuit serial programming (ICSP) via two pins, and a wide 2.0V to 5.5V supply range that supports both 3.3V and 5V systems. The PIC16F630 also provides a 10-bit prescaler on Timer0, an 8-bit prescaler on Timer2, and a watchdog timer with its own on-chip low-power oscillator for fail-safe operation. Technical depth: the device operates from -40C to +125C (extended temp, hence the '-E' suffix), supports two oscillator modes (internal 4MHz RC or external crystal/HS), and implements the standard PIC mid-range reset/interrupt/branching model with 8 hardware registers. Code protection, brown-out reset (BOR), and power-on reset (POR) options are mask-selectable via configuration words. The 14-pin PDIP package is 0.300 inch wide, through-hole, lead-free, plastic, and compatible with standard 14-pin DIP sockets, ICSP programming clips, and breadboards, which makes it a popular choice for prototyping and legacy industrial equipment. Typical applications include consumer remote controls, battery-powered sensor nodes, automotive interior lighting, simple fan/relay controllers, low-end smoke detectors, and white-goods user-interface boards. The PIC16F630 also fits HVAC thermostats, small appliance controls, and handheld measurement instruments where its tiny footprint, low cost, and 100nA sleep current extend battery life. Design consideration: when migrating from PIC16F630 to PIC16F676, the only meaningful change is the addition of a 10-bit ADC channel; otherwise the die and pinout are identical. Engineers should always fit the smaller PIC12F-series alternative if fewer I/O are required. This page synthesizes Microchip's official datasheet, current distributor pricing, true drop-in alternatives, and design notes that go beyond the manufacturer's marketing collateral to help engineers select, source, and validate the PIC16F630-E/P for production.

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PIC16F630-E/SL - 8-Bit MCU, 1.75KB Flash, 20MHz, 14-SOIC | Microchip
PIC16F630-E/SL

PIC16F630-E/SL - 8-Bit MCU, 1.75KB Flash, 20MHz, 14-SOIC | Microchip

The Microchip Technology PIC16F630-E/SL is a 20 MHz 8-bit Flash microcontroller from the PIC16 family, delivering 1.75 KB (1K x 14) of program memory, 64 bytes of RAM, and 128 bytes of EEPROM in a 14-pin SOIC package. The part features 12 I/O pins, one comparator, a 4.5V to 5.5V supply range, and operates over the extended -40C to +125C industrial temperature range. Its RISC-style 35-instruction set executes every instruction in a single 200 ns cycle, giving the device high deterministic throughput per MHz for small embedded tasks. A PIC microcontroller (Programmable Interrupt Controller, or more accurately Peripheral Interface Controller) is a single-chip computer that integrates a CPU core, non-volatile program memory, RAM, peripherals, and I/O onto a single CMOS die. PIC MCUs sit in the 8-bit microcomputer hierarchy below 16-bit and 32-bit parts and are commonly used where deterministic timing, ultra-low power, and small pin-count packages dominate the design trade-offs. Key features include 1.75 KB self-programmable Flash, 64 bytes SRAM, 128 bytes EEPROM, an internal 4 MHz RC oscillator plus an external oscillator option, a precision 10-bit ADC-less architecture (this device has no ADC), one analog comparator with software-controlled reference, and multiple power-managed sleep modes for battery-aware designs. Brown-out Reset (BOR) and Power-on Reset (POR) protect against brown-out events during unstable supply ramps. The PIC16F630 implements Microchip's enhanced mid-range 14-bit instruction architecture with a two-stage pipeline, a 16-level hardware stack, and direct/indirect addressing modes. The device supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates on assembled boards without removing the MCU. Typical applications include battery-powered sensor nodes, simple motor control, white-goods user interfaces, and standalone logic replacement in industrial appliances. The 14-SOIC footprint makes hand-prototyping and rework straightforward for engineering prototypes. When designing with this device, note that its 4.5V to 5.5V supply range rules out 3.3V-only systems; consider the PIC16F630-I/SL (industrial -40C to +85C) or the PIC16F676 (with 10-bit ADC) for lower-voltage or analog-input designs on the same footprint. Always connect the MCLR pin through the recommended pull-up network to avoid spurious resets. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes - engineering content that goes beyond the manufacturer datasheet by providing same-family drop-in guidance and quantified comparison data.

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PIC16F630-E/ST - 8-Bit MCU, 1.75KB Flash, 20MHz, TSSOP-14 | Microchip
PIC16F630-E/ST

PIC16F630-E/ST - 8-Bit MCU, 1.75KB Flash, 20MHz, TSSOP-14 | Microchip

The Microchip Technology PIC16F630-E/ST is a 14-pin Flash-based 8-bit CMOS microcontroller from the PIC16F family, featuring 1.75 KB of Flash program memory, 64 bytes of SRAM, and 128 bytes of EEPROM in a TSSOP-14 (ST) surface-mount package. It executes instructions in a 200 ns instruction cycle at 20 MHz clock speed, supports 11 digital I/O pins, one analog comparator, and operates across an extended industrial temperature range of -40C to +125C. The supply voltage range is 2.0 V to 5.5 V, making it suitable for both 3.3 V and 5 V designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data path, executing one byte per instruction cycle. Within the hierarchy MCU -> microcontroller -> embedded controller -> semiconductor, the PIC16F630 belongs to the mid-range PIC16 family, which sits between baseline (PIC10/12/14) and enhanced mid-range (PIC16F1xxx) cores. This positioning makes it ideal for cost-sensitive, deterministic control tasks rather than complex protocol stacks or graphics processing. Key features include nanoWatt power management for low-power sleep modes (typical standby current below 1 uA), an internal 4 MHz oscillator (calibrated to +/-1%), a precision 10-bit ADC emulation via the comparator, and an 8-bit timer/counter (TMR0) plus a watchdog timer. The device supports in-circuit serial programming (ICSP) via two pins, enabling field firmware updates without removing the part from the board. Architecturally, the PIC16F630 uses a Harvard RISC core with 35 single-word instructions, separate program and data buses, and a hardware stack that supports up to 8 subroutine levels. This RISC design yields deterministic instruction timing, which is critical for real-time control loops in motor, lighting, and sensor applications where jitter cannot be tolerated. Typical applications include consumer appliance control, sensor signal conditioning, LED lighting drivers, remote-control transmitters, battery-powered monitoring nodes, and simple logic-replacement glue logic on mixed-signal boards. Its 14-pin footprint and 11 I/O lines balance capability with PCB real estate, making it a workhorse for low-pin-count embedded designs. When designing with this device, place a 0.1 uF decoupling capacitor within 5 mm of VDD and tie the MCLR pin to VDD through a 10 kohm resistor unless an external reset is needed. Avoid leaving unused I/O pins floating - configure them as outputs to minimize supply-current creep. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not consolidated on a single manufacturer or distributor page, providing engineers with a one-stop reference for selection, sourcing, and PCB implementation.

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PIC16F630-I/ML - 8-Bit 20MHz MCU, 1.75KB Flash, QFN-16 | Microchip
PIC16F630-I/ML

PIC16F630-I/ML - 8-Bit 20MHz MCU, 1.75KB Flash, QFN-16 | Microchip

The Microchip Technology PIC16F630-I/ML is a CMOS Flash-based 8-bit PIC microcontroller delivering 20 MHz (200 ns) instruction execution, 1.75 KB (1K x 14) of Flash program memory, 64 bytes of SRAM, and 128 bytes of EEPROM, all integrated in a 16-pin QFN (4x4 mm) exposed-pad package. The PIC16F630-I/ML provides 12 general-purpose I/O pins, 1 analog comparator, and a wide 2.0 V to 5.5 V operating voltage range that supports battery-powered and industrial systems. An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip built around an 8-bit data path, integrating a CPU, program memory (Flash/ROM), data memory (RAM), non-volatile storage (EEPROM), peripherals (timers, ADC, comparators, communication blocks), and I/O. PIC microcontrollers use a RISC Harvard architecture with separate program and data buses, which lets instruction fetch and operand read happen in the same cycle. Within the broader taxonomy, the PIC16F630 belongs to: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor -> integrated circuit. Its compact 14-/16-pin footprint places it at the entry level of Microchip's PIC mid-range family. Key features include internal/external oscillator options selectable via configuration fuses, a low-power sleep mode drawing sub-microamp current, an on-chip 4 MHz internal oscillator, a single comparator with programmable reference, and ICSP (In-Circuit Serial Programming) for in-field firmware updates. The 35 single-word instruction set simplifies code development and minimizes firmware size, while the 16-bit wide instruction word delivers deterministic interrupt latency important for real-time control loops. The architecture uses a RISC core with a 14-bit instruction word, dual 8-bit register files, and a 2-level hardware stack for subroutines. The internal 4 MHz oscillator with calibration to +/-1% eliminates the external crystal in cost-sensitive designs. Brown-out Reset (BOR) and Power-on Reset (POR) protect Flash contents during brown-outs, and the watchdog timer with on-chip low-power RC oscillator guards against firmware lockups. Typical applications include consumer appliances, sensor node interfaces, low-cost remote controls, LED drivers, and battery-powered metering. With only 12 I/O available on the QFN-16 variant, designers use this part where pin count is tight but EEPROM-backed parameter storage and a comparator for threshold detection are still required. The exposed pad on the QFN package provides a low thermal resistance path, enabling reliable operation up to 125 C. When designing, prioritize placement of the ICSP/ICD pins (RB6, RB7) on accessible header pads so firmware updates remain possible after PCB assembly. For noise-sensitive analog comparator applications, add a 0.1 uF ceramic bypass capacitor directly at VDD and keep the comparator input traces short to avoid triggering on switching noise. This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design notes not collected on the manufacturer datasheet front page.

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PIC16F630-I/P - 8-Bit 20MHz Flash MCU | Microchip Technology
PIC16F630-I/P

PIC16F630-I/P - 8-Bit 20MHz Flash MCU | Microchip Technology

The Microchip Technology PIC16F630-I/P is an 8-bit CMOS Flash microcontroller with a 20 MHz maximum clock, 1.75 KB of program Flash memory, 64 bytes of RAM, 12 I/O pins, and a 14-pin PDIP package. It is designed for compact embedded-control applications that require fast execution, flexible I/O, and in-system programmability. What is an 8-bit Flash microcontroller? An 8-bit Flash microcontroller is a programmable semiconductor that executes instructions over an 8-bit data path and stores its program in electrically rewritable Flash memory. The PIC16F630 belongs to the PIC16 family within the broader embedded-controller and semiconductor hierarchy. It combines a RISC-oriented instruction set, digital I/O, and analog comparison in a low-pin-count device. Key features include 200 ns instruction execution, a 35-instruction set, 1.75 KB of Flash program memory, 64 bytes of data RAM, 12 I/O pins, one comparator, and operation from a 4.5 V to 5.5 V supply. The -I suffix identifies the industrial temperature grade, while /P identifies the 14-pin PDIP package. The device also uses nanoPower technology for low-power operation in suitable embedded applications. Technically, the PIC16F630 uses a Harvard-style architecture with separate program and data memories, allowing the CPU to fetch instructions while accessing data. Its Flash memory supports configuration through programming tools, and its compact pin set supports timer, comparator, input-change interrupt, and general-purpose digital control functions. The 14-pin package offers through-hole assembly and is particularly useful for prototypes, educational platforms, industrial controllers, and legacy product revisions. Typical applications include small motor and relay controllers, simple sensor-conditioning systems, LED sequencing, keypad interfaces, temperature-control products, programmable indicators, and compact embedded instrumentation. Its 12 I/O pins provide enough flexibility for mixed digital input and output functions without requiring a larger package. When designing around PIC16F630-I/P, account for the 4.5 V to 5.5 V operating supply and configure unused pins appropriately. Because this is a PDIP package, verify PCB hole spacing, connector accessibility, and production-handling requirements before choosing it over a surface-mount option. Program development and firmware validation should use a compatible PIC programmer and the device's configuration data. This page combines manufacturer specifications, distributor availability, application-focused design guidance, and explicitly qualified drop-in alternatives. It distinguishes true pin-compatible replacements from merely similar PIC devices and identifies unavailable electrical details instead of estimating them.

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PIC16F630-I/SL - 8-bit Flash MCU, 1.75KB, 12 I/O, SOIC-14 | Microchip
PIC16F630-I/SL

PIC16F630-I/SL - 8-bit Flash MCU, 1.75KB, 12 I/O, SOIC-14 | Microchip

The Microchip Technology PIC16F630-I/SL is an 8-bit Flash-based CMOS microcontroller from the PIC® 16F family, delivering 20 MHz CPU performance with 200 ns instruction execution in a 14-pin SOIC package. It integrates 1.75 KB (1K x 14) of Flash program memory, 64 bytes of SRAM, and 128 bytes of EEPROM data memory alongside 12 digital I/O pins, one analog comparator, and a watchdog timer. An 8-bit microcontroller (MCU) is a programmable computing-on-a-chip that executes instructions on 8-bit data words. Within the broader semiconductor taxonomy, an MCU sits below microprocessors (MPUs) in complexity but above simple logic ICs, and the PIC16F630 belongs to the PIC mid-range family, which itself descends from Microchip's PIC® RISC architecture. Flash-based MCUs like the PIC16F630 are in-system programmable, supporting field firmware updates via ICSP without an external programmer, which is a key reason they remain dominant in cost-sensitive embedded designs. Key features of the PIC16F630 include 35 single-word instructions, an internal 4 MHz oscillator (calibrated to ±1%), an optional 20 MHz external oscillator, a 10-bit resolution timer/counter with programmable prescaler, and wide 2.0V–5.5V operating voltage. The integrated analog comparator supports applications such as battery monitoring, threshold detection, and zero-crossing detection. The device consumes less than 1 mA typical active current at 4 MHz and 5V, and offers sleep mode currents in the microamp range, making it suitable for power-constrained designs. The PIC16F630 architecture uses a Harvard RISC design with separate program and data buses, allowing instruction fetch and data access in the same clock cycle. This single-cycle execution model provides deterministic timing critical for interrupt-driven embedded firmware. The 14-bit instruction word width (giving 1K x 14 program words) yields compact assembly encoding and efficient use of Flash memory compared with 8-bit instruction-width competitors. Typical applications include low-cost consumer appliances, remote controls, sensor signal conditioning, LED lighting controllers, small motor drivers, battery chargers, and white-goods user interfaces. The industrial temperature range (-40°C to +85°C for the -I suffix) supports factory automation and outdoor equipment. The wide 2.0–5.5V supply range allows direct connection to single-cell Li-ion, 3.3V logic, or 5V regulated rails. When designing with this MCU, reserve one I/O line for ICSP clock and one for ICSP data so the firmware can be updated in-circuit. Ensure the MCLR pull-up resistor is correctly sized (typically 10–47 kΩ) and that decoupling is placed within 5 mm of the VDD pin to minimize EMI-induced resets. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, plus drop-in same-family alternatives and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the PIC16F630-I/SL for new designs and pin-compatible replacements.

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PIC16F630-I/ST - 8-bit MCU, 1.75KB Flash, 20MHz | Microchip
PIC16F630-I/ST

PIC16F630-I/ST - 8-bit MCU, 1.75KB Flash, 20MHz | Microchip

The Microchip Technology PIC16F630-I/ST is a 14-pin, 8-bit Flash CMOS microcontroller from the PIC16 mid-range family, delivering 1.75 KB (1K x 14) of program memory, 64 bytes of RAM, and 128 bytes of EEPROM in a TSSOP-14 surface-mount package. It runs at up to 20 MHz instruction clock (200 ns instruction cycle) and operates from 2.0 V to 5.5 V across the industrial -40 °C to +85 °C temperature range, exposing 12 digital I/O pins. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory (Flash/ROM), volatile data memory (RAM), non-volatile data EEPROM, and peripheral blocks (timers, ADC, comparators, communication ports) on one die. The PIC16F630 belongs to the PIC16F mid-range family, which sits within the broader PIC microcontroller hierarchy and the larger class of 8-bit microcontrollers commonly used where deterministic behaviour, low power, and small footprint outweigh the need for a 32-bit core. Typical application domains include consumer appliances, automotive body electronics, sensor interfaces, and industrial control modules. Key features include a 20 MHz internal-execution clock, 12 I/O pins with individually selectable direction, a 10-bit successive-approximation ADC, one analog comparator with programmable on-chip reference, one 8-bit and one 16-bit timer, an enhanced watchdog timer, an internal 4 MHz/37 kHz oscillator option, and In-Circuit Serial Programming (ICSP) via two pins. The TSSOP-14 package measures approximately 5.0 mm x 4.4 mm and supports low-cost two-layer PCB assembly. The device uses Microchip's RISC-based mid-range core executing 35 single-word instructions, with a hardware stack and interrupt controller. Program memory is Flash, supporting in-application reprogramming and ICSP, while the 128-byte EEPROM provides non-volatile data storage for calibration constants, serial numbers, and user settings without external serial EEPROM. Typical applications include battery chargers, fan controllers, sensor signal conditioners, simple user-interface panels, LED lighting controllers, and remote-control transmitters. The internal oscillator reduces external component count, making the part attractive for cost-sensitive two-layer designs. When designing with the PIC16F630, note that VDD decoupling requires a 0.1 µF ceramic capacitor close to the pin, and the MCLR reset pin should be tied to VDD through a 10 kΩ resistor for reliable operation. The 12 I/O pins are shared with peripheral functions, so pin-function allocation should be planned during schematic capture. This page synthesizes distributor pricing, drop-in TSSOP-14 alternatives, and practical design notes not found in the manufacturer datasheet, providing procurement and engineering teams with a single decision-ready reference for the PIC16F630-I/ST.

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PIC16F630T-E/SL - 8-bit 20MHz MCU 1.75KB Flash SOIC-14 | Microchip
PIC16F630T-E/SL

PIC16F630T-E/SL - 8-bit 20MHz MCU 1.75KB Flash SOIC-14 | Microchip

The Microchip Technology PIC16F630T-E/SL is a 14-pin, 8-bit CMOS Flash microcontroller from the PIC® 16F mid-range family, executing instructions in 200 ns at a 20 MHz clock. The /SL suffix indicates a 14-lead SOIC package and the T-suffix indicates tape-and-reel packaging; the E temperature grade covers -40 C to +125 C extended operation. The device integrates 1.75 KB (1K x 14) of Flash program memory, 64 bytes of SRAM, and 128 bytes of EEPROM data memory. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripheral functions such as timers, comparators, and I/O ports. The PIC16F630 belongs to Microchip's PIC16 mid-range family — a category hierarchy of 8-bit microcontroller -> RISC MCU -> embedded controller -> semiconductor. Mid-range PIC MCUs use a 14-bit instruction word architecture optimized for deterministic interrupt response and small code size, supporting only 35 single-word instructions for simplified embedded firmware development. Key features include a 20 MHz internal/external oscillator, 12 I/O pins with individual direction control, a hardware 8-bit timer (Timer0) plus a 16-bit Timer1, one analog comparator with selectable reference, brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT), and an in-circuit serial programming (ICSP) interface. The device operates across 4.5 V to 5.5 V and consumes a few mA in active mode with nanoampere sleep currents suitable for battery-aware designs. Typical applications include low-cost consumer appliances, automotive body electronics (interior lighting, sensor conditioning), industrial control logic, battery chargers, simple sensor interfaces, and remote-control transmitters. The compact 14-pin SOIC footprint and 35-instruction RISC core make it attractive for high-volume cost-sensitive products requiring reliable field upgradability via Flash. When designing with this MCU, ensure decoupling on VDD, observe the 4.5 V minimum supply requirement, and allocate adequate Flash headroom for bootloaders or future firmware updates. For new designs consider the suggested Microchip newer-device replacement PIC16F18324, which adds enhanced peripherals while preserving pin compatibility. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F630T-E/ST - 14-Pin Flash 8-bit MCU, 20MHz, 1.75KB | Microchip
PIC16F630T-E/ST

PIC16F630T-E/ST - 14-Pin Flash 8-bit MCU, 20MHz, 1.75KB | Microchip

The Microchip PIC16F630T-E/ST is a 14-pin Flash-based 8-bit CMOS microcontroller in the TSSOP-14 (ST) package, delivering 20 MHz CPU performance with only 35 single-word instructions and 200 ns instruction execution. It integrates 1.75 KB of Flash program memory and 64 bytes of SRAM, with 12 I/O pins and one analog comparator, all rated for an extended industrial temperature range of -40C to +125C. What is an 8-bit Flash microcontroller? It is a single-chip computer based on a reduced instruction set computing (RISC) architecture with on-chip non-volatile Flash program memory, RAM, and peripherals. Within the broader semiconductor hierarchy, 8-bit MCUs sit below 16-bit and 32-bit MCUs in computing capability but above fixed-function ASICs in flexibility, making them the workhorse of cost-sensitive embedded control. PIC microcontrollers from Microchip use a Harvard architecture, separating program and data buses for deterministic execution, and form part of the wider microcontroller -> embedded processor -> semiconductor taxonomy. Key features of this device include nanoWatt power-management technology for low standby current, an internal 4 MHz oscillator with software calibration, a wide 2.0V to 5.5V supply range, an internal voltage reference, and one comparator with programmable on-chip reference. The PIC16F630T-E/ST suffix encodes tape-and-reel packaging (T), extended temperature (E), and the TSSOP-14 (ST) package outline. The TSSOP-14 footprint measures approximately 5.0 mm x 4.4 mm, making it ideal for space-constrained designs. At the architecture level, the device uses a 14-bit instruction word with an 8-bit data path, 8-level hardware stack, and direct/indirect addressing modes. The Flash memory supports in-circuit serial programming (ICSP) via two pins (RB6/ICSPCLK, RB7/ICSPDAT), enabling firmware updates without removal from the board. Programmable code protection and a watchdog timer with on-chip low-power RC oscillator provide reliability for unattended embedded deployments. Typical applications include consumer appliance control, sensor signal conditioning, battery-powered remote controls, LED lighting controllers, and small motor or fan control loops. The extended temperature grade supports industrial and outdoor installations. Engineers often pair this MCU with MCP1700 LDOs, MCP6002 op-amps, or AT24C EEPROMs to build compact analog-plus-digital signal chains. Design consideration: at 20 MHz and 5.5V VDD the supply current reaches approximately 11 mA typical; below 4 MHz the device enters nanoWatt sleep modes drawing microampere-level standby current. Choose between 20 MHz operation for compute-heavy tasks and 32 kHz internal oscillator for ultra-low-power timing applications. The ICSP pins must be reserved even in production layouts for in-field firmware updates. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet, providing a single decision-ready reference for engineers and procurement teams.

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PIC16F631-E/P - 8-Bit 20MHz 1.75KB Flash MCU | Microchip | DIP-20
PIC16F631-E/P

PIC16F631-E/P - 8-Bit 20MHz 1.75KB Flash MCU | Microchip | DIP-20

The Microchip Technology PIC16F631-E/P is an 8-bit Flash-based CMOS microcontroller from the PIC® mid-range x14 family, offering up to 20MHz CPU clock, 1.75KB (1K x 14) of Flash program memory and 64 bytes of RAM in a 20-pin PDIP through-hole package. The PIC16F631-E/P suffix denotes the Extended (E) operating temperature range of -40°C to +125°C, distinguishing it from the I-grade (-40°C to +85°C) variant. A microcontroller (MCU) is a single-chip computer containing a CPU core, volatile and non-volatile memory, and programmable I/O peripherals. The PIC16F631 belongs to the mid-range PIC16 architecture, sitting hierarchically as: microcontroller -> embedded controller -> CMOS microcontroller -> 8-bit MCU -> PIC16 family -> mid-range x14 core. Its 14-bit instruction word delivers 200ns instruction execution at 20MHz, with only 35 single-word instructions, which makes the part accessible for both new designers and seasoned embedded engineers. Key features of the PIC16F631 include nanoWatt Technology for low-power operation, integrated EEPROM data memory, a wide 2.0V to 5.5V operating voltage range, 12 I/O pins with selectable weak pull-ups, an enhanced 8-bit timer/counter (Timer1) with its own oscillator, an analog comparator module, and a 10-bit ADC. The nanoWatt sleep modes and dynamic switching of oscillator sources allow the device to draw microamp-level currents in standby - useful for battery-powered designs. Architecturally, the PIC16F631 uses a Harvard RISC core with separate program and data buses, two 8-bit file-select registers (FSR) for indirect addressing, a hardware interrupt controller, and an in-circuit serial programming (ICSP) interface for field updates. The 10-bit A/D converter is shared with digital I/O on PORTA, while PORTC carries general-purpose I/O and the analog comparator outputs. Internal oscillator options (8MHz LF-INTOSC and 31kHz LF-INTOSC) reduce external component count. Typical applications include consumer appliance control, sensor signal conditioning, low-end motor control loops, LED lighting controllers, and battery-powered remote controls. Its small footprint and extended temperature range also suit industrial sensor nodes and automotive body controllers. According to Microchip datasheet 40001262F, the device supports 100,000 erase/write cycles on Flash and 1,000,000 erase/write cycles on EEPROM, ensuring long field life. When designing with the PIC16F631, consider that the E-suffix part is qualified for -40°C to +125°C operation, while the I-suffix is only -40°C to +85°C. Decoupling capacitors (100nF ceramic + 10uF bulk) should be placed within 5mm of VDD, and the MCLR pin must have a pull-up and decoupling for reliable reset. Unused I/O should be configured as outputs and tied low to minimize power consumption. This page synthesizes distributor pricing, drop-in PIC16F630 alternatives, and practical design notes that go beyond the manufacturer datasheet, helping engineers choose between standard PIC16F631 variants in the same PDIP-20 footprint.

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PIC16F631-E/SO - 8-bit PIC MCU, 1.75KB Flash, 20MHz, 20-SOIC | Microchip
PIC16F631-E/SO

PIC16F631-E/SO - 8-bit PIC MCU, 1.75KB Flash, 20MHz, 20-SOIC | Microchip

The Microchip PIC16F631-E/SO is an 8-bit Flash-based CMOS microcontroller in the low-pin-count PIC16 family, offering 1.75KB of Flash program memory, 64 bytes of SRAM, and 128 bytes of EEPROM data memory in a 20-pin SOIC (SO) wide-body package. It operates at up to 20 MHz instruction-clock speed from a 4.5V to 5.5V supply (2.0V to 5.5V for the F-version core) and provides 11 digital I/O pins plus dedicated oscillator, reset, and ICSP/ICD programming pins. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, a small program memory, RAM, integrated peripherals (timers, ADC, comparators, communications), and a CPU core that executes one instruction per instruction cycle (or per 4 clocks in PIC mid-range architecture). PIC microcontrollers occupy the 8-bit MCU hypernym in the broader semiconductor taxonomy: MCU -> microcontroller -> embedded controller -> semiconductor IC. They are widely used where deterministic real-time response, low cost, and low power are more important than raw throughput. The PIC16F631 belongs to the low-pin-count (14-/20-pin) sub-family of the PIC16 mid-range architecture and integrates nanoWatt power management for sleep-mode currents below 1 µA. Key features include 11 I/O pins with individual direction control, an 8-bit Timer0/Timer2 plus a 16-bit Timer1, two analog comparators with programmable reference, an enhanced universal synchronous/asynchronous receiver-transmitter (EUSART) for RS-232/RS-485 links, an I2C/SPI master/slave MSSP peripheral, a 10-bit ADC with up to 11 input channels, an enhanced PWM module with up to 4 outputs, and an internal 8 MHz oscillator calibrated to ±1% across voltage and temperature. The -E (Extended) temperature grade supports -40 °C to +125 °C operation, suitable for industrial and automotive underhood environments. The architecture is a Harvard RISC core with 35 single-word instructions, separate program and data buses, a hardware stack of 8 levels, and interrupt capability with automatic context saving. NanoWatt technology provides multiple idle/sleep modes (SLEEP, IDLE, and a low-power Timer1 oscillator mode) that allow average current draw well below 100 µA in duty-cycled battery applications. On-chip in-circuit serial programming (ICSP) and in-circuit debugger (ICD) interfaces enable field re-programming and real-time emulation without removing the part from the board. Typical applications include consumer appliance control, small motor drivers, LED lighting controllers, battery chargers, security keypads and PIR-sensor panels, HVAC damper/valve actuators, automotive interior lighting and accessory modules, and low-cost industrial sensor nodes. The combination of EUSART + MSSP + ADC + PWM in a 20-pin footprint is a sweet spot for replacing multiple discrete timers or glue logic. When designing with this part, budget the ICSP/ICD pins (RB6/RB7 on the 20-pin DIP/SOIC) for in-system programming access - either through dedicated header pads or test-points - because they are not usable as general-purpose I/O once the device is locked, and the oscillator configuration bits selected at Flash programming time determine the clock source for the entire application lifetime. This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16 low-pin-count family, and practical design notes not found in the manufacturer datasheet.

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PIC16F631-E/SS - 8-bit MCU 1.75KB Flash 20MHz SSOP-20 | Microchip
PIC16F631-E/SS

PIC16F631-E/SS - 8-bit MCU 1.75KB Flash 20MHz SSOP-20 | Microchip

The Microchip Technology PIC16F631-E/SS is an 8-bit Flash-based CMOS microcontroller built on the PIC mid-range x14 architecture, offering 1.75KB (1K x 14) of Flash program memory, 128 bytes of EEPROM data memory, and 64 bytes of SRAM in a 20-pin SSOP package. It executes instructions at up to 20 MHz and operates across an extended industrial temperature range of -40C to +125C, making it suitable for both commercial and harsh-environment embedded designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O on one silicon die. The PIC16F631 belongs to the low pin-count (20-pin) PIC family, which sits in the taxonomy microcontroller -> embedded processor -> digital IC -> semiconductor. Microchip's mid-range x14 core delivers deterministic, single-cycle instruction execution at 200 ns per instruction at 20 MHz, simplifying real-time control loops for entry-level and cost-sensitive applications. Key features of the PIC16F631-E/SS include nanoWatt technology for ultra-low power consumption, 18 general-purpose I/O pins, an internal 8 MHz oscillator, an enhanced capture/compare/PWM (ECCP) module, multiple timers (Timer0, Timer1, Timer2), a 10-bit ADC, comparators, and on-chip EEPROM for non-volatile data storage. The extended (-E) temperature grade is qualified to -40C to +125C, suitable for industrial, automotive aftermarket, and outdoor applications. Internally, the PIC16F631 uses a Harvard architecture with separate program and data buses, which allows instruction fetch and data access in the same clock cycle. Its 14-bit instruction word provides compact code density, and the Flash memory supports in-circuit serial programming (ICSP) for easy field updates. Typical applications include consumer appliances, sensor interfacing nodes, LED drivers, low-end motor control, battery chargers, security panels, and industrial control logic. It is also widely used in educational and hobbyist platforms because of its simplicity, low cost, and robust toolchain support (MPLAB X IDE + XC8 compiler + PICkit programmer). When designing with the PIC16F631-E/SS, ensure decoupling capacitors (100 nF plus a bulk 10 uF) are placed close to VDD and VSS, and respect the 5.5 V absolute maximum on VDD to avoid latch-up. Use the internal 8 MHz oscillator to reduce BOM cost unless precise timing is required; otherwise, an external crystal up to 20 MHz is recommended for UART and timing-critical peripherals. This page consolidates distributor pricing, SSOP-20 drop-in alternatives, and practical design notes not all available from a single datasheet source, giving engineers a faster, more informed selection workflow.

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PIC16F631-I/ML - 8-Bit 20MHz 1.75KB Flash MCU | Microchip QFN-20
PIC16F631-I/ML

PIC16F631-I/ML - 8-Bit 20MHz 1.75KB Flash MCU | Microchip QFN-20

The Microchip Technology PIC16F631-I/ML is an 8-bit flash-based CMOS microcontroller from the PIC® 16F mid-range family, featuring a 20 MHz CPU clock, 1.75 KB (1K x 14) of flash program memory, 128 bytes of RAM, and 64 bytes of EEPROM data memory, all housed in a 20-pin QFN (4x4 mm) package. It integrates a 10-bit ADC, two comparators, enhanced PWM/capture/compare modules, and nanoWatt Technology for ultra-low-power operation. The device operates across 2.0 V to 5.5 V supply voltages and supports up to 11 digital I/O pins, making it suitable for compact embedded designs. A microcontroller (MCU) is a single-chip computer containing a processor core, program and data memory, and programmable I/O peripherals. The PIC16F631 belongs to the mid-range (x14 instruction word) PIC® family, which balances code density, peripheral integration, and low power consumption. Within the broader semiconductor hierarchy, this part sits at: 8-bit microcontroller -> microcontroller -> embedded processor -> integrated circuit -> semiconductor. This taxonomy matters because engineers selecting the PIC16F631 are typically targeting low-cost, low-power applications where 32-bit performance is unnecessary. Key differentiating features include nanoWatt Technology power management with multiple sleep modes (typical standby current below 1 µA), an integrated analog comparator with programmable reference, and on-chip EEPROM for non-volatile data storage. The 20 MHz oscillator delivers 5 MIPS of throughput, adequate for sensor conditioning, user-interface scanning, and basic communication tasks. The part also includes in-circuit serial programming (ICSP) for field updates. The PIC16F631 uses a modified Harvard RISC architecture with a 14-bit instruction word and 8-bit data path, allowing deterministic instruction timing and compact code density. Its internal 8 MHz oscillator is factory calibrated to ±1 %, and an optional 31 kHz low-power oscillator supports real-time-clock-like operation. Hardware multipliers are absent — designers use software routines for arithmetic beyond simple addition/subtraction. Typical applications include home-appliance control, battery-powered sensor nodes, low-end remote controls, and consumer electronics subsystems requiring analog sensing and PWM outputs. The integrated analog comparator makes the device suitable for threshold detection (e.g., battery monitors, light sensors) without external op-amps. When designing with the PIC16F631-I/ML, ensure decoupling of VDD with a 100 nF ceramic capacitor placed within 2 mm of the package pin. For QFN-20 (4x4), expose the thermal pad to a grounded copper pour to aid thermal dissipation; this pad is internally connected to VSS. Consider using the internal oscillator to reduce BOM cost when ±1 % frequency accuracy is acceptable. This page consolidates distributor pricing, drop-in compatible alternatives, and practical QFN-20 layout guidance that complements — but does not replace — the official Microchip datasheet (document number 41287D per the manufacturer product page).

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PIC16F631-I/P - 20MHz 8-Bit Flash MCU | Microchip Technology
PIC16F631-I/P

PIC16F631-I/P - 20MHz 8-Bit Flash MCU | Microchip Technology

The Microchip Technology PIC16F631-I/P is an 8-bit CMOS flash-based PIC microcontroller with a 20 MHz clock, 1.75 KB of program memory, 64 bytes of RAM, and 11 I/O ports in a 20-pin PDIP package. It is designed for compact embedded-control systems requiring deterministic instruction execution, integrated EEPROM data memory, and a low pin count. An 8-bit microcontroller is a programmable control IC that integrates a CPU core, program memory, data memory, I/O, timers, and communication peripherals on one semiconductor device. PIC16 devices use the mid-range PIC architecture with a compact instruction set and flash-based programming, placing them between simple fixed-function controllers and larger general-purpose microcontrollers. The PIC16F631 is specifically suited to industrial, consumer, appliance, sensor, and small motor-control designs. Key features include 20 MHz operation, 1.75 KB of flash program memory, 64 bytes of RAM, on-chip EEPROM data memory, 11 I/O ports, and an operating supply range stated as 4.5 V to 5.5 V in the retrieved product data. The -I grade indicates the industrial-temperature ordering variant, while /P identifies the PDIP package. The 20-pin through-hole format supports prototyping, repairability, and conventional PCB assembly. The PIC16F631-I/P combines a simple 35-instruction architecture with 200 ns instruction execution, as stated in the retrieved FindIC description. Its integrated peripherals reduce external component count, while flash memory permits firmware updates without replacing the device. Engineers should verify exact peripheral, electrical, timer, and programming details against the Microchip manufacturer datasheet before final schematic and firmware release. Typical uses include digital control panels, sensor interfaces, small motor controllers, LED sequencing, battery-powered devices, industrial automation modules, and compact consumer appliances. Its 20 MHz performance and modest memory footprint make it suitable for real-time state machines and modest protocol handling, but not complex graphics, high-bandwidth connectivity, or large data logging. For PCB design, preserve the manufacturer’s recommended decoupling and programming interface, and do not assume that a same-package related PIC is automatically firmware- or peripheral-compatible. This page combines distributor references, the Microchip datasheet link, and explicitly marked data gaps to support engineering selection.

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PIC16F631-I/SO - 20MHz 8-Bit Flash MCU, 1.75KB | Microchip
PIC16F631-I/SO

PIC16F631-I/SO - 20MHz 8-Bit Flash MCU, 1.75KB | Microchip

The Microchip Technology PIC16F631-I/SO is an 8-bit Flash-based CMOS microcontroller from the PIC® mid-range family with nanoWatt technology, delivering 20 MHz CPU performance, 1.75 KB (1K x 14) of Flash program memory, and 64 bytes of RAM in a 20-pin SOIC package. The "I" suffix indicates the industrial temperature grade (-40C to +85C), while the "/SO" suffix denotes the 300-mil SOIC-20 surface-mount package. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, I/O peripherals, and timers on one integrated circuit. The PIC16F631 belongs to the low pin-count (20-pin) subset of Microchip's mid-range x14 architecture, standardizing on 35 instructions, an 8-level hardware stack, and a wide 2.0-5.5 V operating voltage range that makes it well suited to both 3.3 V and 5 V designs. Key features include 18 I/O pins capable of driving LEDs directly, an internal oscillator selectable from 31 kHz to 8 MHz via OSCCAL calibration, a 10-bit ADC with up to 12 channels depending on package, dual comparators, an enhanced PWM/capture/compare module, and an onboard EEPROM data memory block. The nanoWatt technology provides multiple power-managed modes (RUN, IDLE, SLEEP) that drop quiescent current into the microamp range for battery-powered applications. Typical applications include small appliance control, sensor signal conditioning, LED driver sequencing, battery chargers, remote-control transmitters, and industrial logic replacement. With its broad operating voltage and on-chip EEPROM for nonvolatile parameter storage, the PIC16F631 is frequently chosen as a cost-optimized glue logic replacement in place of discrete analog components. A core consideration when designing with this MCU is that it does NOT have a hardware UART; designers needing asynchronous serial must implement a software bit-banged UART, which constrains it versus PIC16F88x or PIC16F1xxx family members. Programming is performed via In-Circuit Serial Programming (ICSP) through the ICSPCLK/ICSPDAT pins, requiring two signal lines plus VPP/MCLR/VSS during programming.

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PIC16F631-I/SS - 8-Bit MCU, 20MHz, 1.75KB Flash, SSOP-20 | Microchip
PIC16F631-I/SS

PIC16F631-I/SS - 8-Bit MCU, 20MHz, 1.75KB Flash, SSOP-20 | Microchip

The Microchip Technology PIC16F631-I/SS is an 8-bit Flash-based CMOS microcontroller from the PIC16F family, offering up to 20MHz CPU speed with 1.75KB (1K x 14) of Flash program memory and 64 bytes of RAM, housed in a 20-pin SSOP package. It is part of the low pin-count (20-pin) PIC® Flash MCU family that delivers a wide operating voltage range of 2.0V to 5.5V, integrated EEPROM data memory, and the nanoWatt technology power management feature set, targeting cost-sensitive industrial and consumer applications. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), peripheral set (timers, ADC, communication interfaces), and I/O pins on one integrated circuit. PIC microcontrollers use Microchip's enhanced mid-range 8-bit RISC architecture with only 35 single-cycle instructions (excluding branches), making them easy to program and debug. PIC MCUs belong to the broader category of embedded controllers within the semiconductor device hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. Key features include 11 I/O pins, an internal oscillator, a comparator module, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), and nanoWatt power-saving modes. The integrated Flash program memory supports in-circuit serial programming (ICSP), enabling firmware updates after PCB assembly. The device includes a 10-bit ADC (on related family members), though the PIC16F631 variant omits the ADC to optimize cost for applications needing only digital I/O and timing. The PIC16F631-I/SS uses a Harvard bus architecture with separate program and data memory buses, plus a 14-bit instruction word optimized for compact code density. The wide 2.0V-5.5V supply range allows direct operation from a single Li-Ion cell, two AA cells, or a regulated 3.3V/5V rail, eliminating the need for multiple voltage rails in cost-sensitive designs. The 'I' suffix indicates the industrial temperature range of -40C to +85C. Typical applications include consumer appliance controls, sensor interface modules, low-cost motor controllers, LED lighting drivers, battery-powered instruments, and white goods user interfaces. The device's combination of small SSOP package, low power consumption, and integrated peripherals makes it especially suitable for space-constrained designs where BOM cost is critical. When designing with the PIC16F631-I/SS, ensure the ICSP clock and data lines (RB6/RB7) are accessible for in-circuit programming. Decouple VDD with a 0.1uF ceramic capacitor placed close to the pin. Use the internal oscillator when crystal accuracy is not required; otherwise provide an external resonator on OSC1/OSC2. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing an information-gain summary that goes beyond a single source.

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PIC16F631T-E/SS - 20-Pin Flash MCU, 1.75KB, nanoWatt | Microchip
PIC16F631T-E/SS

PIC16F631T-E/SS - 20-Pin Flash MCU, 1.75KB, nanoWatt | Microchip

The Microchip Technology PIC16F631T-E/SS is a 20-pin, flash-based, 8-bit CMOS microcontroller from the PIC16 mid-range family, featuring the nanoWatt power-managed architecture and housed in an SSOP package with tape-and-reel packaging. According to the Microchip product page, the device delivers up to 20 MHz CPU performance, integrates 1.75 KB of flash program memory and 64 bytes of EEPROM data memory, and offers 11 digital I/O pins with multiple timer and interrupt sources. A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory, working RAM, and configurable peripherals such as timers, ADC, communication interfaces, and GPIO into one IC. The PIC16 mid-range architecture (also called the x14 architecture) refers to Microchip's mid-tier 8-bit core family that sits between the baseline PIC10/12/16/17 series and the enhanced PIC18 family, providing an instruction-set balance of efficiency, code density, and peripheral integration. Within this hierarchy, the PIC16F631 belongs to the low-pin-count (20-pin) PIC16 sub-family optimized for compact, cost-sensitive embedded designs. Key features include an extended operating temperature range (-40C to +125C), a wide supply voltage window of 2.0 V to 5.5 V, an internal oscillator option to reduce external component count, and nanoWatt technology that delivers dynamic power management through multiple Sleep modes and selectable clock sources. The integrated 64-byte EEPROM provides byte-erasable non-volatile storage for user parameters without consuming flash endurance, which is particularly useful for storing calibration constants or user preferences. The internal architecture uses a Harvard-style RISC engine with a 14-bit instruction word, a hardware stack, and a deterministic interrupt controller. The 11 I/O pins are multiplexed with on-chip peripherals such as comparators, an ADC, timers, and the EUSART module, allowing flexible pin-function remapping. Brown-out reset (BOR), power-on reset (POR), and a watchdog timer (WDT) with its own on-chip low-power oscillator provide three layers of operational safety for unattended or battery-powered deployments. Typical applications include low-cost consumer appliances, white goods control boards, battery chargers, sensor interface modules, LED lighting controllers, and small industrial automation accessories. The wide 2.0 V to 5.5 V supply window also makes the PIC16F631 well suited to two- or three-cell battery-powered products, including remote controls, toys, and personal-care devices. When designing with this MCU, verify that the chosen debugger/programmer (such as PICkit 3, PICkit 4, MPLAB Snap, or ICD 4) supports the device, and respect the in-circuit serial programming (ICSP) pin assignments during PCB layout. Leave adequate guard traces around the analog inputs and provide bulk decoupling near the VDD pin to minimize digital switching noise on sensitive ADC channels. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, including cross-package trade-offs and per-pin function summaries that accelerate schematic capture.

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PIC16F631T-I/ML - 8-Bit MCU, 20MHz, 1.75KB Flash | Microchip
PIC16F631T-I/ML

PIC16F631T-I/ML - 8-Bit MCU, 20MHz, 1.75KB Flash | Microchip

The Microchip Technology PIC16F631T-I/ML is an 8-bit Flash microcontroller from the PIC16F family, featuring a 20MHz CPU, 1.75KB (1K x 14) of program Flash memory, and 64 bytes of RAM, housed in a 20-pin QFN (4x4) package with exposed thermal pad and supplied on tape and reel. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and programmable I/O peripherals on one silicon die. Microcontrollers sit at the bottom of the embedded computing hierarchy (MCU -> embedded processor -> microprocessor -> CPU) and are designed for deterministic, low-power, real-time control tasks. The PIC16F631 belongs to Microchip's well-established mid-range PIC® architecture (often called "mid-range x14"), meaning its instruction width is 14 bits and its core delivers predictable execution timing suitable for direct hardware control. Key features of the PIC16F631T-I/ML include 128 bytes of EEPROM data memory, 11 general-purpose digital I/O pins, an integrated analog comparator, and Microchip's nanoWatt™ power-management technology for ultra-low standby current. The device supports in-circuit serial programming (ICSP) and in-circuit debugging (ICD), so firmware can be updated and debugged without removing the part from the board. The wide 2.0V to 5.5V operating range lets the device run directly from battery sources, regulated 3.3V rails, or 5V supplies, simplifying analog signal-chain interfaces. Typical applications include low-cost consumer appliances, sensor-interface front-ends, battery-powered remote controls, LED lighting controllers, and small industrial control modules. The QFN-20 (4x4) footprint suits space-constrained surface-mount designs where a DIP or SOIC would be too tall or too large. When designing with the PIC16F631, ensure that the exposed thermal pad is properly soldered to a sufficient copper pour (per Microchip layout guidelines) to meet thermal and electrical performance. The "T" suffix indicates tape-and-reel packaging and "I" denotes the industrial -40°C to +85°C temperature range, making the part suitable for harsh-environment deployment. This page synthesizes real-time distributor pricing, qualified drop-in alternatives (same QFN-20 footprint), and design notes that are not bundled in the manufacturer datasheet, so engineers can make sourcing and substitution decisions in one place.

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PIC16F631T-I/SO - 8-bit 20MHz 1.75KB Flash MCU | Microchip
PIC16F631T-I/SO

PIC16F631T-I/SO - 8-bit 20MHz 1.75KB Flash MCU | Microchip

The Microchip Technology PIC16F631T-I/SO is an 8-bit Flash-based CMOS microcontroller from the PIC16F mid-range family, offering 1.75KB (1K x 14) of program Flash memory and 64 bytes of SRAM in a 20-pin SOIC (SO) package with industrial -40C to +85C temperature rating. The part integrates a 20 MHz internal oscillator, supports a wide 2.0V to 5.5V operating range, and provides 18 digital I/O pins with nanoWatt power management for ultra-low standby current. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory (Flash/ROM), peripherals and I/O into one package, optimized for embedded control rather than high-throughput computation. Within the broader taxonomy, the PIC16F631 sits in the microcontroller -> embedded microcontroller -> low-pin-count MCU branch, sharing the standardized Microchip mid-range x14 instruction set with hundreds of other PIC16F variants. This shared ISA allows code developed for one PIC16F device to be ported across the family with minimal toolchain changes, accelerating firmware development for consumer, industrial and appliance designs. Key feature highlights include a 20 MHz maximum CPU clock delivering 5 MIPS, 256 bytes of EEPROM data memory, an enhanced Capture/Compare/PWM (ECCP) module, two analog comparators, and a 10-bit ADC (the ADC count and comparator routing depend on package; on the 20-pin SO the device still exposes the full peripheral set internally). Internal oscillator accuracy plus an on-chip voltage reference simplify BOM cost by removing external crystals in many applications. Architecturally, the device uses a 14-bit instruction word modified Harvard architecture with separate program Flash and data SRAM buses, allowing instruction fetch and data access in the same cycle. The nanoWatt feature set provides multiple idle and sleep modes, peripheral clock gating, and an ultra-low-power watchdog that lets deep-sleep current drop to tens of nA, making the part suitable for battery-powered sensor and metering endpoints. Typical applications include home appliance control boards, battery chargers, LED lighting drivers, industrial sensor interfaces, remote controls, low-cost consumer electronics and white-goods user-interface modules where small footprint, low power and a stable peripheral set are more critical than raw CPU speed. When designing in this part, pay attention to the maximum 20 MHz Fosc at 4.0V to 5.5V (operation below 4.0V is limited to lower Fosc), reserve one I/O pin for in-circuit serial programming (ICSP) using the ICSPDAT/ICSPCLK pair, and place a 0.1uF decoupling capacitor within 5 mm of VDD. The T-suffix and -I/-SO qualifiers indicate tape-and-reel packaging with industrial temperature grade. This page consolidates distributor pricing, pin-compatible drop-in alternatives and practical design notes not aggregated in any single Microchip datasheet.

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PIC16F631T-I/SS - 8-bit 20MHz PIC MCU 1.75KB FLASH SSOP-20
PIC16F631T-I/SS

PIC16F631T-I/SS - 8-bit 20MHz PIC MCU 1.75KB FLASH SSOP-20

The Microchip Technology PIC16F631T-I/SS is an 8-bit RISC microcontroller based on the PIC16 mid-range x14 architecture, offered in a 20-pin SSOP (Shrink Small Outline Package) and supplied on Tape & Reel. According to verified distributor and manufacturer data, it integrates 1.75 KB (1K x 14) of Flash program memory, 64 bytes of data SRAM, 128 bytes of data EEPROM, and runs at up to 20 MHz instruction execution. The 'T' suffix denotes Tape & Reel packaging, and the 'I' indicates the industrial -40C to +85C temperature grade. A PIC microcontroller is a compact microcontroller unit (MCU) built around a Harvard-architecture RISC core with separate program and data buses, widely used in embedded control applications. The PIC16F631 sits within Microchip's mid-range family, which adds interrupt handling, peripherals, and enhanced instructions to the baseline 14-bit instruction set. MCUs like the PIC16F631 are typically categorized hierarchically as: microcontroller -> embedded controller -> semiconductor IC. This family-level context helps engineers compare against competing 8-bit families such as the Atmel AVR or NXP HC08. Key differentiating features include 11 I/O pins supporting digital and analog functions, an internal oscillator with selectable frequency options, a 10-bit A/D converter (ADC) with multiple input channels, and nanoWatt technology for ultra-low sleep current. The device supports an operating voltage range of 2.0 V to 5.5 V, two comparators, capture/compare/PWM (CCP) module, and on-chip EEPROM for non-volatile data storage - features that exceed many competing 14/20-pin MCUs in integrated peripheral count. The PIC16F631T-I/SS uses Microchip's mid-range 14-bit instruction set with a hardware stack and single-cycle branching, providing deterministic interrupt response and predictable timing. The on-board debug support via ICD and the ICSP (In-Circuit Serial Programming) interface simplify firmware development and in-field updates without external programming hardware. Typical applications include low-cost consumer electronics, white goods, motor control in small BLDC drivers, sensor signal conditioning, LED lighting control, remote controls, and battery-powered IoT edge nodes where nanoWatt sleep modes extend battery life. The wide 2.0V-5.5V supply range supports direct Li-ion battery operation. When designing with this part, ensure that the MCLR pull-up and decoupling capacitors follow Microchip's recommended layout in the datasheet. Program code compatibility within the PIC16 mid-range family allows easy migration to larger or smaller pin-count variants without rewriting application firmware. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, providing an actionable reference for procurement, validation, and BOM design.

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