Mga Microcontroller

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PIC16C621T-20I/SO - 8-Bit 20MHz OTP MCU 1.75KB | Microchip
PIC16C621T-20I/SO

PIC16C621T-20I/SO - 8-Bit 20MHz OTP MCU 1.75KB | Microchip

The Microchip Technology PIC16C621T-20I/SO is an 8-bit PIC16 microcontroller built on a RISC architecture, offering 20 MHz maximum clock speed, 1.75 KB (1K x 14) of One-Time Programmable (OTP) program memory and 80 bytes of data RAM, housed in an 18-pin SOIC wide-body package. The "I" suffix indicates the industrial operating temperature grade of -40C to +85C, while the "20" speed grade specifies 20 MHz operation and "T" denotes tape-and-reel packaging for high-volume assembly. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory and programmable I/O peripherals. The PIC16C family belongs to Microchip's mid-range 8-bit MCU portfolio, sitting in the taxonomy: PIC16C -> PIC16 mid-range -> 8-bit PIC microcontroller -> embedded MCU -> semiconductor. Mid-range PIC MCUs use a 14-bit instruction word and Harvard architecture, balancing code density, deterministic interrupt response and low cost for legacy industrial and consumer designs. Key features of the PIC16C621 include a built-in analog comparator, 13 digital I/O pins, a 16-bit timer/counter (Timer1) and an 8-bit timer/counter (Timer0), a Watchdog Timer with its own on-chip RC oscillator, Power-on Reset, Brown-out Reset, and an in-circuit serial programming (ICSP) interface for production-line code loading into the OTP memory. The 20 MHz oscillator provides a 200 ns instruction cycle, with most instructions completing in a single cycle. Typical applications include appliance control, sensor signal conditioning, LED driving, simple motor control loops, and replacement of discrete logic in legacy 8-bit embedded products. Industrial operating temperature makes it suitable for factory automation modules and outdoor metering. When designing with OTP memory, note that program code cannot be erased or rewritten - plan firmware revisions carefully or migrate to the flash-based PIC16F6xx family for design flexibility. The wide-body 18-SOIC (7.50 mm body width) provides better thermal and mechanical characteristics than the narrow 18-SOIC variant used on lower-pin-count PICs.

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PIC16C621T-20I/SS - 8-Bit 20MHz OTP MCU 1.75KB | Microchip
PIC16C621T-20I/SS

PIC16C621T-20I/SS - 8-Bit 20MHz OTP MCU 1.75KB | Microchip

The Microchip Technology PIC16C621T-20I/SS is a member of the PIC16C62x family of 8-bit CMOS microcontrollers based on the Microchip PIC architecture, featuring a 20 MHz maximum operating frequency, 1.75 KB (1K x 14) of One-Time Programmable (OTP) program memory, and 80 bytes of RAM in a 20-pin SSOP package. The integrated peripherals include a Watchdog Timer (WDT), Brown-Out Reset (BOR), Power-On Reset (POR), an analog comparator module, and a Capture/Compare/PWM (CCP) module, providing a self-contained control platform for embedded designs. The device operates across an industrial temperature range of -40C to +85C and supports a supply voltage range that is typical for the PIC16C OTP family. An 8-bit PIC microcontroller is a compact, deterministic Reduced Instruction Set Computer (RISC) core designed for embedded control. The PIC16C62x family sits in the hierarchy of PIC microcontrollers -> 8-bit microcontrollers -> microcontrollers -> microcontrollers (MCU) -> integrated circuits -> semiconductors, where it bridges the entry-level PIC10/12/16 families and the higher-performance PIC17/18 families. The OTP program memory allows the part to be programmed once in production and used in cost-sensitive applications where firmware is fully matured and field updates are not required. Key features include 13 digital I/O pins across multiple ports, support for an external oscillator or internal RC oscillator option, low-power SLEEP mode, an in-circuit serial programming interface (for compatible variants), and industrial-grade temperature qualification. The OTP memory architecture provides faster read access and higher reliability than EPROM in equivalent packages, while the SSOP form factor balances board-space savings with hand-solder-friendly lead pitch. Together, these features deliver a self-contained compute platform for low-cost embedded controllers. The PIC16C621T-20I/SS implements a Harvard-architecture RISC core with a 14-bit instruction word, single-cycle instruction execution (except branches), and a hardware stack for subroutine nesting. Its integrated analog comparator enables direct interface with analog sensors without external op-amps, while the CCP module supports timing-critical control loops such as motor drive and SMPS feedback. Industrial -40C to +85C qualification plus BOR/POR/WDT make this part suitable for unattended equipment. Typical applications include white-goods and appliance control, industrial sensor interfaces, low-cost motor control, automotive body electronics (non-safety), and consumer remote controls. The integrated analog comparator is particularly useful for threshold detection on temperature, light, or position sensors, while the CCP module drives PWM-controlled loads. When designing with this part, note that OTP devices cannot be re-programmed - confirm firmware stability before committing to OTP. The 'T' suffix denotes tape-and-reel packaging for high-volume SMT assembly, and the 'I' suffix designates the industrial temperature grade (-40C to +85C). This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC16C family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C622-04/P - 4MHz 8-Bit CMOS OTP MCU 18-PDIP | Microchip
PIC16C622-04/P

PIC16C622-04/P - 4MHz 8-Bit CMOS OTP MCU 18-PDIP | Microchip

The Microchip Technology PIC16C622-04/P is an EPROM-based 8-bit CMOS microcontroller built on the PIC16C RISC architecture, delivering up to 4 MHz CPU clock in a 18-pin PDIP through-hole package. The device integrates 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of on-chip data RAM, supporting 13 general-purpose digital I/O pins. The "-04" speed suffix denotes the 4 MHz oscillator grade, while the "/P" suffix designates the plastic DIP package. According to the Microchip PIC16C62X datasheet family, the part operates across a wide 2.5 V to 6.0 V supply range (commercial temperature grade 0°C to +70°C) and consumes only 15 µA typical at 5 V/4 MHz and 1 µA typical at 3 V/32 kHz, making it well-suited to low-power embedded applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral I/O on one die. The PIC16C622 belongs to the PIC16C family of OTP/EPROM microcontrollers from Microchip, sitting in the product hierarchy PIC16C62X -> PIC16C family -> 8-bit PIC microcontrollers -> microcontrollers -> integrated circuits. It is functionally a member of the same family as the PIC16C621 and PIC16C620, which differ mainly in program-memory size and feature integration while sharing a common core and pinout. Key features of the PIC16C622-04/P include 13 digital I/O lines, a watchdog timer for code-execution safety, a power-on reset (POR) circuit, an internal/external oscillator block, and EPROM-based program memory that is windowed for prototype development (in the JW package variant) or OTP for production. The device also integrates a programmable code-protection scheme, an 8-bit timer/counter, and on-chip brown-out / power-up timers commonly seen across the PIC16C62X series. Architecturally, the PIC16C622 uses a Harvard-style RISC core with a 14-bit instruction word and an 8-bit data path, fully static design allowing the oscillator to be stopped without losing register state, and CMOS EPROM technology for low active and standby current. The 4 MHz oscillator grade paired with the 200 ns instruction cycle (one-quarter of the clock period) provides deterministic interrupt latency, which is important for real-time control loops. Typical applications include appliance controllers, simple sensor interfaces, LED driver sequencers, hobby and educational hardware, and legacy embedded products where a 4 MHz 8-bit MCU is sufficient. The wide operating voltage range also allows direct connection to 3.3 V or 5 V rails in mixed-logic designs. When designing with this device, ensure OTP programming is done before final assembly because OTP cells cannot be erased after programming. Add a 0.1 µF decoupling capacitor close to VDD and bulk capacitance near the PCB power inlet to keep the internal POR / brown-out block stable during supply transients. This page synthesizes distributor pricing and stock, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single authoritative reference for PIC16C622-04/P selection and replacement.

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PIC16C622-04/SS - 8-bit OTP MCU, 3.5KB, 128B RAM | Microchip
PIC16C622-04/SS

PIC16C622-04/SS - 8-bit OTP MCU, 3.5KB, 128B RAM | Microchip

The Microchip PIC16C622-04/SS is an EPROM-based 8-bit CMOS microcontroller in a 20-pin SSOP package, running at up to 4 MHz from a 2.5V to 6.0V supply. It integrates 3.5KB (2K x 14) of one-time-programmable program memory, 128 bytes of RAM, and 13 digital I/O pins, making it a compact solution for cost-sensitive embedded control. What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a small computer-on-a-chip built around an 8-bit data path and a RISC instruction set, optimized for deterministic real-time control. The OTP (one-time-programmable) variant uses EPROM program memory that can be written once during production and cannot be erased, lowering die cost versus flash parts. Within Microchip's portfolio, the PIC16C62x family belongs to the PIC16 mid-range architecture, sits between the baseline PIC10/12/16 families and the enhanced PIC18 family, and is part of the broader microcontroller (MCU) -> embedded IC -> semiconductor taxonomy. Key features include a 14-bit instruction word, hardware USART, capture/compare/PWM module, two 8-bit timers plus one 16-bit timer, a 5-channel 8-bit ADC, and an internal watchdog timer. Low-power consumption is rated at 15 µA typical at 5V / 4 MHz and 1 µA typical at 3V / 32 kHz, allowing battery-friendly standby operation. The device is fully static and supports DC to 4 MHz operation across commercial, industrial, and extended temperature ranges. The PIC16C622-04/SS uses Microchip's mid-range RISC core with a hardware multiplier-free architecture, dual clock domains, and on-chip oscillator options for RC, LP, XT, and HS modes. The '04' speed suffix denotes a 4 MHz maximum oscillator frequency, while the 'I' industrial temperature variant covers -40C to +85C. Typical applications include small appliance controls, sensor signal conditioning, IR remote receivers, simple motor drivers, and low-cost consumer electronics. Industrial uses span HVAC damper controls, security keypads, and metering front-ends where deterministic interrupt response and small form factor matter. When designing with this part, remember OTP memory cannot be re-programmed in-circuit - prototype firmware must be validated on a windowed PIC16C622 JW or a flash-equivalent PIC16F628 before committing to OTP. Use decoupling capacitors of 0.1 µF ceramic on VDD and place the ICSP clock/data pins away from high-current traces. This page synthesizes distributor stock, parametric pricing, and engineering-grade cross-reference data not found in the manufacturer datasheet, enabling faster sourcing and design decisions.

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PIC16C622-04E/P - 8-bit CMOS MCU, 3.5KB OTP, 4MHz | Microchip
PIC16C622-04E/P

PIC16C622-04E/P - 8-bit CMOS MCU, 3.5KB OTP, 4MHz | Microchip

The Microchip Technology PIC16C622-04E/P is an EPROM-based 8-bit CMOS microcontroller delivering 4 MIPS performance at 4 MHz in a 18-pin PDIP through-hole package. The device integrates 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 13 digital I/O pins, providing a compact control platform for embedded applications requiring UV-erasable, windowed-style development flows or factory-programmed OTP deployment. The 04E speed grade designation specifies a 4 MHz oscillator input and an Extended operating temperature range of -40°C to +125°C, making the part suitable for industrial and harsh-environment installations. An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, program memory, data RAM, and programmable peripherals on one silicon die. Within the broader taxonomy, MCUs belong to microprocessors, which fall under semiconductors, which are classified as integrated circuits. The PIC16C family from Microchip uses a RISC (Reduced Instruction Set Computer) Harvard architecture with a separate program and data bus, enabling single-cycle instruction execution and deterministic interrupt response for real-time control loops. Key features of the PIC16C622-04E/P include a wide operating voltage range of 2.5 V to 6.0 V, ultra-low power consumption of 15 µA typical at 5 V and 4 MHz and 1 µA typical at 3 V and 32 kHz, fully static design supporting DC to 4 MHz operation, an integrated 8-bit analog-to-digital converter (ADC) variant channel-mixing on I/O pins, and a watchdog timer with on-chip RC oscillator for reliable recovery from software lockups. The 13 I/O pins can source/sink up to 25 mA per pin, sufficient to directly drive LEDs, small relays, and logic-level MOSFETS without external buffers. The PIC16C622-04E/P employs CMOS EPROM technology for non-volatile program storage, allowing prototype development with windowed (JW) parts before committing to volume OTP production. The PIC16C6x core family shares a common instruction set, peripheral set, and pinout across PDIP-18, SOIC-18, and SSOP-20 packages, simplifying board-level migration. Built-in peripherals include one 8-bit timer/counter (TMR0), one 16-bit timer/counter (TMR1), a Capture/Compare/PWM (CCP) module, and a synchronous serial port (SSP) supporting SPI and I²C master/slave modes. Typical applications include industrial control logic, automotive body electronics, sensor signal conditioning front-ends, low-power battery instruments, and consumer white goods requiring Extended temperature tolerance. The 4 MHz core delivers ample computational headroom for state-machine-style control firmware while the 15 µA active current keeps standby drain acceptable in solar or energy-harvesting designs. When designing with this device, ensure the ICSP programming header remains accessible for factory OTP programming, since OTP memory cannot be erased in-circuit. Add a 100 nF decoupling capacitor within 5 mm of VDD and a bulk 10 µF tantalum on the supply rail to suppress noise during CCP PWM transitions. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C622-04E/SS - 4MHz 8-bit CMOS EPROM MCU, 20-SSOP | Microchip
PIC16C622-04E/SS

PIC16C622-04E/SS - 4MHz 8-bit CMOS EPROM MCU, 20-SSOP | Microchip

The Microchip Technology PIC16C622-04E/SS is an EPROM-based 8-bit CMOS microcontroller from the PIC16C family, delivering 4 MHz CPU performance in a 20-pin SSOP package with 7.50 mm body width. It integrates 3.5 KB (2K x 14) of EPROM program memory and 128 bytes of SRAM, with 13 general-purpose digital I/O pins and an external oscillator interface. The device operates across a wide voltage range of 3.0 V to 6.0 V, supporting Commercial, Industrial, and Extended temperature grades. An 8-bit CMOS microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripheral I/O into one package. The PIC16C family uses a RISC-based Harvard architecture with a 14-bit instruction word, providing deterministic instruction timing of one instruction per clock cycle (except branches). EPROM-based variants such as the PIC16C622 support one-time or windowed reprogrammability, making them well suited for low-volume and prototyping applications where Flash re-programmability is unnecessary. Key features include fully static design (allowing clock stopping), 15 µA typical supply current at 5 V / 4 MHz, and 1 µA typical at 3 V / 32 kHz. The device also supports power-saving SLEEP mode, a watchdog timer, and a programmable code-protection feature on program memory. Its compact 20-pin SSOP footprint is pin-compatible with several siblings in the PIC16C62x family, simplifying board layout reuse across speed grades and temperature ranges. The PIC16C622-04E/SS is widely deployed in legacy industrial controllers, appliance controls, automotive body modules, and instrumentation front-ends that benefit from its mature PIC instruction set and broad third-party toolchain support. The EPROM cell technology and 4 MHz instruction throughput are adequate for control-loop and interface-bridging tasks rather than compute-intensive signal processing. When designing with this part, place a 0.1 µF decoupling capacitor close to the VDD pin and follow Microchip's recommended oscillator layout to minimize EMI. Engineers should also confirm code-protection programming settings before volume production, as the EPROM window cannot be un-protected after sealing. This page synthesizes distributor pricing, drop-in PIC16C6xx alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16C622-04I/SO - 4MHz 8-Bit CMOS MCU 3.5KB OTP 18-SOIC | Microchip
PIC16C622-04I/SO

PIC16C622-04I/SO - 4MHz 8-Bit CMOS MCU 3.5KB OTP 18-SOIC | Microchip

The Microchip Technology PIC16C622-04I/SO is an 8-bit EPROM-based CMOS microcontroller in the PIC16C family, delivering 4 MHz CPU performance with 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of RAM, housed in an 18-pin SOIC package. It provides 13 digital I/O pins, an external oscillator interface, and operates across the industrial temperature range of -40C to +85C. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, volatile data memory, and configurable peripheral I/O. The PIC16C architecture places the PIC16C622 in the mid-range PIC taxonomy (PIC10/12/14/16/18), which targets cost-sensitive embedded control applications that require deterministic interrupt response and low power consumption. The '16C' designation indicates EPROM/OTP program memory, distinguishing it from Flash-based 'F' variants (PIC16F) and ROM-based 'C' successors, and from the newer enhanced mid-range '16F1xxx' devices. Key features include 4 MHz maximum clock frequency, 13 I/O lines, an instruction set of 35 single-word instructions, a hardware 8-bit timer/counter, an analog comparator module, and an internal brown-out reset circuit. The device is offered in the industrial temperature grade (designated by the 'I' suffix), making it suitable for factory floor and outdoor equipment. Power consumption is low by design; typical active current is under 2 mA at 4 MHz/5V, and quiescent current drops into the microampere range in SLEEP mode for battery-backed applications. The PIC16C622 uses a RISC CPU core with separate instruction and data buses (Harvard architecture), enabling most instructions to execute in a single instruction cycle. The OTP program memory allows one-time field programming using a device programmer, which historically made this family popular for low-volume production and legacy industrial designs. The 18-SOIC (7.50 mm body width) package is a JEDEC-standard gull-wing surface-mount form factor compatible with hand-soldering and standard SMT assembly. Typical applications include industrial control panels, appliance controllers, security system keypads, smart-card readers, automotive body electronics (non-safety), and battery-powered sensor nodes. The combination of small footprint, deterministic timing, and wide operating voltage range makes it a strong fit for cost-driven embedded designs. When designing with this part, verify whether the target product requires in-system programmability - because the PIC16C622 is OTP, firmware cannot be updated in the field. For new designs requiring flash memory, evaluate PIC16F628 or PIC16F88 as Flash-based drop-in alternatives; otherwise the PIC16C622 remains a stable choice for high-reliability, one-time-burn applications. This page synthesizes distributor stock and pricing data, drop-in alternatives, and practical design notes for the PIC16C622-04I/SO that are not consolidated on any single manufacturer or distributor page.

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PIC16C622-20/P - 8-Bit 20MHz OTP MCU, 3.5KB, 13 I/O | Microchip
PIC16C622-20/P

PIC16C622-20/P - 8-Bit 20MHz OTP MCU, 3.5KB, 13 I/O | Microchip

The Microchip PIC16C622-20/P is an 8-bit CMOS EPROM/ROM-based microcontroller in the PIC16C family, delivering 20MHz operation, 3.5KB (2K x 14) of one-time-programmable (OTP) program memory and 128 bytes of RAM in an 18-pin PDIP through-hole package. It provides 13 general-purpose I/O pins, an internal 8-bit timer/counter, a watchdog timer, and the standard PIC mid-range peripheral set, making it a drop-in member of the well-documented PIC16C6x lineage. What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a Harvard-architecture 8-bit RISC microcontroller from Microchip Technology, organized as: microcontroller -> MCU -> embedded controller -> semiconductor IC. PIC MCUs dominate cost-sensitive embedded designs thanks to deterministic instruction execution, a compact instruction set (35 instructions for mid-range parts like the PIC16C622), and a decades-long ecosystem of compilers, programmers (MPLAB PM3), and in-circuit debuggers. Key features include 20MHz maximum clock (4MHz typical RC operation), 2.7V-6.0V wide operating voltage, 15 µA typical current at 5V/4MHz, and only 1 µA at 3V/32 kHz, fully static design supporting low-power sleep modes, brown-out reset and power-on reset, and commercial/industrial/extended temperature grades. The 20MHz speed grade (the "-20" suffix) targets applications that need faster instruction throughput than the 04 variants. Typical applications include low-cost industrial control, sensor signal conditioning, simple motor drivers, automotive interior modules, and consumer appliance controllers. The 13 I/O and 3.5KB OTP program memory fit legacy designs where deterministic timing and through-hole DIP-18 serviceability are valued over modern surface-mount footprints. When designing with this device, plan a programming path early: OTP requires a device programmer such as the MPLAB PM3, since in-circuit reprogramming is not supported. Add 0.1 µF decoupling on VDD and keep the MCLR pull-up resistor within 10kΩ to ensure reliable reset.

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PIC16C622-20/SS - 8-Bit CMOS EPROM MCU, 3.5KB, 13 I/O | Microchip
PIC16C622-20/SS

PIC16C622-20/SS - 8-Bit CMOS EPROM MCU, 3.5KB, 13 I/O | Microchip

The Microchip Technology PIC16C622-20/SS is an EPROM-based 8-bit CMOS microcontroller from the PIC16C62X family, delivering 20 MHz maximum clock speed with 3.5 KB of on-chip EPROM program memory and 128 bytes of RAM. Housed in a 20-pin SSOP (Shrink Small Outline Package), it offers 13 general-purpose I/O lines, one 8-bit timer/counter, and a watchdog timer for embedded control. The -20 speed grade denotes 20 MHz operation, and the /SS suffix identifies the SSOP-20 industrial-pinout package variant supplied in tube packaging. A microcontroller is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces into one device. The PIC16C62X belongs to the PIC16 mid-range family, a RISC architecture family within Microchip's 8-bit MCU hierarchy that sits between baseline PIC10/12/14 devices and the enhanced PIC18 family. EPROM (Erasable Programmable Read-Only Memory) is one-time-erasable UV-window program memory, distinguishing this part from flash-based PIC16F equivalents and making it suitable for legacy and development environments where windowed erasure is acceptable. Key features include 35 single-word instructions, 14-bit instruction word, 8-level deep hardware stack, direct/indirect/relative addressing, power-on reset, power-up timer, oscillator start-up timer, and brown-out detection. The device operates from 3.0 V to 6.0 V across commercial 0 °C to +70 °C and industrial -40 °C to +85 °C grades. The PIC16C622 variant adds a single analog comparator and a voltage reference module, distinguishing it from the PIC16C620 (no comparator) and PIC16C621 (comparator only). Typical applications include legacy embedded control systems, industrial sensor interfaces, simple motor control loops, appliance controllers, security and alarm panels, and automotive body electronics where pin-compatible PIC16F replacements are not required. The wide 3.0 V-6.0 V supply range supports both 3.3 V and 5 V rails commonly found in legacy industrial designs. When designing with this device, note that EPROM parts require a quartz-windowed package for erasure and a PROM programmer for code loading. Modern designs typically migrate to the pin-compatible flash-based PIC16F628 or PIC16F88, which share the SSOP-20 footprint but support in-circuit reprogramming. The PIC16C622-20/SS is recommended for legacy maintenance, existing design replication, and applications where the EPROM technology is mandated.

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PIC16C622-20E/P - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
PIC16C622-20E/P

PIC16C622-20E/P - 8-Bit 20MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C622-20E/P is a 20 MHz 8-bit CMOS PIC microcontroller in an 18-pin PDIP through-hole package, featuring 3.5 KB of One-Time Programmable (OTP) program memory organized as 2K x 14, 128 bytes of RAM, and 13 general-purpose digital I/O pins. It operates across an extended industrial temperature range, indicated by the "E" designator, and supports 3 V to 5.5 V supply operation. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/OTP/Flash), working RAM, and peripheral interfaces (GPIO, timers, ADC, communication) into one device. The PIC16C family sits in the hierarchy: microcontroller -> embedded MCU -> 8-bit RISC MCU -> semiconductor IC. OTP-based PIC16C parts are programmed once at production and retain code permanently, making them suitable for high-volume, cost-sensitive, fixed-function products where firmware will not change in the field. Key differentiating features of the PIC16C622-20E/P include its 20 MHz maximum clock (200 ns instruction cycle), 14-bit instruction word with single-cycle ALU operations, a hardware analog comparator module, and 13 GPIO pins arranged across ports A and B. The device offers low-power CMOS operation with sleep/idle modes, internal brown-out reset, watchdog timer, and power-on reset support. Architecturally, the PIC16C622-20E/P uses Microchip's enhanced mid-range 8-bit RISC core with a hardware multiplier absent, a 14-bit program counter, and a Harvard-style separate program and data bus. Its peripherals include one 8-bit timer (TMR0) and one 16-bit timer (TMR1) with capture/compare, plus the analog comparator block for sensor interfacing. Typical applications include automotive body controllers, appliance control boards, simple sensor interfaces, battery chargers, and industrial control modules. The 18-pin PDIP package with through-hole leads suits hand-soldered prototypes, educational platforms, and through-hole production runs. A key design consideration is that the OTP memory is one-time programmable and cannot be erased, so production programming requires a validated firmware image. Engineers should plan for a Flash-based PIC16F equivalent for field updates and prototypes, while reserving the PIC16C622-20E/P for fixed-code, high-volume production. This page synthesizes real-time distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers and buyers evaluate the PIC16C622-20E/P for new designs and EOL replacements.

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PIC16C622-20E/SO - 8-bit OTP MCU, 3.5KB, 13 I/O | Microchip
PIC16C622-20E/SO

PIC16C622-20E/SO - 8-bit OTP MCU, 3.5KB, 13 I/O | Microchip

The Microchip Technology PIC16C622-20E/SO is a 8-bit RISC microcontroller from the PIC16C family, featuring 3.5KB of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and 13 digital I/O pins, housed in an 18-pin SOIC (Small Outline IC) package with 7.50mm body width. It executes instructions at a 20MHz external oscillator rate (5 MIPS) from a 3V to 5.5V supply, and is qualified to the automotive temperature grade (-40C to +125C). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripheral I/O, and clock generation on one die. The PIC16C family uses Microchip's 14-bit instruction set with a Harvard architecture, separating program and data buses for deterministic single-cycle instruction execution. This makes the PIC16C622 part of the broader hierarchy: microcontroller -> embedded controller -> semiconductor -> integrated circuit. Key features include 13 I/O pins with individual direction control, an 8-bit timer/counter with 8-bit prescaler, a watchdog timer with on-chip RC oscillator, a 5-channel 8-bit analog-to-digital converter (ADC), two analog comparators with programmable reference, and an internal 4MHz RC oscillator for low-cost designs without an external crystal. The 20MHz maximum clock rate supports time-critical control loops, while OTP program memory enables fast prototyping before committing to a masked ROM variant. Architecturally, the PIC16C622 uses CMOS EPROM technology with a 14-bit instruction word. Its 35 single-word instructions, 8-level hardware stack, and direct/indirect data addressing simplify assembly-language programming. The integrated brown-out design with secondary oscillator and dual analog comparators make it well suited for mixed-signal embedded designs. Typical applications include automotive body controllers, white-goods appliance control, security and fire-alarm sensor interfaces, simple motor control loops, and industrial instrumentation front-ends. The extended (E) temperature grade qualifies it for underhood and dashboard automotive environments. When designing with this OTP part, plan firmware before programming because OTP parts cannot be reprogrammed in-circuit. Ensure the decoupling network (100nF plus 10uF bulk) sits within 5mm of VDD/VSS pins, and reserve MCLR with the proper external pull-up configuration. This page synthesizes verified distributor stock, parametric alternatives, and application-specific design notes that are not available in the manufacturer datasheet alone - enabling faster component evaluation and BOM risk reduction.

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PIC16C622-20E/SS - 8-bit CMOS MCU 3.5KB EPROM | Microchip
PIC16C622-20E/SS

PIC16C622-20E/SS - 8-bit CMOS MCU 3.5KB EPROM | Microchip

The Microchip Technology PIC16C622-20E/SS is an 8-bit RISC CMOS microcontroller featuring 3.5KB (2K x 14) of one-time programmable EPROM program memory, 128 bytes of RAM, and 13 digital I/O pins, housed in a 20-pin SSOP package. It is a member of the PIC16C62X family, operates at up to 20 MHz, and supports wide 2.5V-5.5V supply voltage with dual 3.3V and 5V operation. An 8-bit microcontroller (MCU) is a small, self-contained computing device integrating a CPU, program memory, RAM, and peripherals (timers, I/O, ADC) on a single silicon die. It belongs to the broader class of embedded microcontrollers, sitting beneath microprocessors in system complexity but offering higher integration and lower cost for control-oriented tasks. Microcontrollers such as the PIC16C62X series are widely deployed in appliance control, automotive subsystems, and industrial instrumentation, where deterministic instruction execution and minimal external component count are essential. Key features of the PIC16C622-20E/SS include 35 single-cycle instructions (all single-word except branches), a 14-bit instruction word, an internal/external oscillator option, an 8-bit timer/counter with 8-bit prescaler, a watchdog timer with on-chip RC oscillator, and a power-on reset (POR). The device also integrates a comparator module and supports in-circuit serial programming (ICSP) via two pins, enabling firmware updates without removing the part from the board. Architecturally, the PIC16C622 uses a Harvard RISC architecture with separate program and data buses, an 8-level deep hardware stack, and direct, indirect, and relative addressing modes. The 'E' suffix indicates the Extended industrial temperature grade (-40C to +125C), while the '20' indicates a 20 MHz maximum clock. The SS package (SSOP-20) is a 0.300-inch wide shrink-SOIC footprint. The device is OTP (one-time programmable) rather than flash, making it suitable for volume production where code stability is achieved. Typical applications include automotive body controllers, appliance control boards, sensor signal conditioning, low-power remote control transmitters, and industrial actuator drivers. The wide operating temperature and dual-voltage support also make it suitable for HVAC and white-goods applications. When designing with this part, ensure the EPROM window is covered in production, use proper decoupling on VDD, and account for the OTP programming overhead by verifying code in prototype windowed packages first. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C622-20I/P - 8-bit OTP MCU, 3.5KB, 20MHz, 18-DIP | Microchip
PIC16C622-20I/P

PIC16C622-20I/P - 8-bit OTP MCU, 3.5KB, 20MHz, 18-DIP | Microchip

The Microchip Technology PIC16C622-20I/P is an 8-bit CMOS EPROM/ROM-based microcontroller from the PIC® 16C family, featuring 3.5KB (2K x 14) of one-time-programmable (OTP) program memory, 128 bytes of RAM, and 13 digital I/O pins in a through-hole 18-pin PDIP package. It executes instructions at up to 20 MHz from a 2.5V to 6.0V supply and is rated for the industrial temperature range of -40°C to +85°C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, working RAM, and peripheral I/O on one die. The PIC16C622 belongs to the mid-range PIC architecture family (microcontroller -> 8-bit MCU -> PIC16 family -> Microchip mid-range) and uses a RISC instruction set optimized for deterministic single-cycle execution. The PIC16C622 specifically adds an internal comparator peripheral alongside the standard PIC16C62x core, making it a frequent choice for analog-front-end embedded designs without external op-amps. Key features of the PIC16C622-20I/P include 4 MHz operation at <2 mA typical and a deep sleep mode drawing under 1 µA at 3V/32 kHz, a 15-bit instruction word, hardware USART, two 8-bit timers plus one 16-bit timer, a programmable watchdog timer with on-chip RC oscillator, and in-circuit serial programming (ICSP) capability. The OTP EPROM program memory is windowless, allowing one-time field programming through standard Microchip device programmers. Architecturally, the PIC16C622 uses a Harvard bus with separate program and data paths, a 14-bit wide instruction word, and a hardware stack eight levels deep. The internal comparator module offers programmable reference and output polarity, supporting battery-monitoring and signal-conditioning tasks without external analog components. Typical applications for the PIC16C622-20I/P include appliance control, HVAC sensor interfaces, smoke-detector signal chains, automotive body electronics, intelligent battery chargers, and remote-control transmitters where its onboard comparator simplifies analog signal conditioning. Industrial users adopt it for low-cost data-acquisition front ends and motor-control auxiliary logic. Designers should note that the OTP variant cannot be reprogrammed in-circuit once sealed; development should begin with the equivalent flash PIC16F627A-I/P for code iteration, then migrate to the PIC16C622-20I/P for production units where OTP is preferred for cost or security reasons. This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, application guidance, and practical design notes not assembled in the manufacturer datasheet alone.

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PIC16C622-20I/SO - 8-bit OTP MCU, 3.5KB, 20MHz SOIC-18 | Microchip
PIC16C622-20I/SO

PIC16C622-20I/SO - 8-bit OTP MCU, 3.5KB, 20MHz SOIC-18 | Microchip

The Microchip PIC16C622-20I/SO is an EPROM-based 8-bit CMOS microcontroller from the PIC16C62X family delivering 3.5KB of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 13 I/O pins in a 18-pin SOIC package. It operates up to 20MHz and is rated for the industrial temperature range (-40C to +85C). The "I" suffix indicates industrial temperature grade while "/SO" specifies the 7.3 mm wide SOIC-18 surface-mount outline. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral communications into one IC. MCUs form the lowest tier of embedded computing hierarchy: MCU -> embedded processor -> microprocessor -> digital IC -> semiconductor. The PIC16C62X family uses a RISC architecture with a single accumulator (W register) and Harvard program/data bus split, which allows the CPU to fetch instructions and data in parallel - doubling throughput at a given clock rate versus von Neumann machines. Key features of the PIC16C622-20I/SO include two 8-bit timer/counters (Timer0 and Timer2), one 16-bit timer/counter (Timer1), a capture/compare/PWM module, a USART serial port, an analog comparator with two inputs, and a watchdog timer with on-chip RC oscillator. The OTP EPROM program memory supports up to 100 erase/write cycles and retains code for over 40 years per Microchip datasheet 30235j. Power consumption is 15 uA typical at 5V/4MHz and 1 uA typical at 3V/32kHz, making the part suitable for low-power and battery applications. Architecturally, the PIC16C622 uses a 14-bit instruction word with a 35-instruction set and 8-level hardware stack, providing deterministic interrupt response critical for real-time control. The Harvard bus, RISC pipeline, and integrated analog peripherals reduce external component count and BOM cost for embedded designs. Typical applications include motor control, remote-control transmitters, security and alarm systems, consumer appliances, and industrial sensor interface boards. The two built-in analog comparators enable direct interfacing with analog sensors such as thermistors, photocells, and bridge transducers without external op-amps. When designing with this part, ensure the supply voltage stays within 2.5V to 6.0V and that the MCLR reset circuit (typical 10k pull-up to VDD) is implemented per the datasheet. Industrial temperature grade means -40C to +85C operation, which is the standard factory/automotive-under-hood limit; for full AEC-Q100 qualification a different part number is required. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C622-20I/SS - 8-bit EPROM MCU, 3.5KB, 13 I/O | Microchip
PIC16C622-20I/SS

PIC16C622-20I/SS - 8-bit EPROM MCU, 3.5KB, 13 I/O | Microchip

The Microchip Technology PIC16C622-20I/SS is an EPROM-based 8-bit CMOS microcontroller with 3.5KB (2K x 14) of program memory, 128 bytes of RAM, and 13 digital I/O pins, housed in a 20-pin SSOP package. It operates at up to 20 MHz from a 2.5V to 6.0V supply, supports external oscillator mode, and is qualified for the industrial -40C to +85C temperature range. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, volatile data memory, and programmable peripherals. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) Harvard architecture that separates program and data buses, allowing simultaneous instruction fetch and data read for higher throughput than von-Neumann designs at the same clock rate. PIC16C-series parts are one-time-programmable (OTP) EPROM variants targeted at cost-sensitive volume production where code stability has been finalized. Key features include 13 bidirectional I/O pins with individual direction control, a 20 MHz internal execution rate (200 ns instruction cycle), one 8-bit timer/counter and one 16-bit timer/counter, an analog comparator, and an internal/ external oscillator option. The device draws approximately 2 mA at 5V/4 MHz and less than 1 uA in standby, making it well suited to battery-powered instrumentation. Watchdog timer and power-on reset are integrated for unattended embedded deployments. The PIC16C622-20I/SS uses Microchip's mid-range 14-bit instruction set shared across the PIC16F/C/CR family, with 35 single-word instructions. Development is supported by MPLAB X IDE, MPLAB XC8 compiler, and the PICkit 3/4 programmers, allowing code migration to flash-based PIC16F variants when production volumes justify the conversion from OTP EPROM. The SSOP-20 footprint is shared with PIC16C620A, PIC16C621A, and PIC16F628 families, enabling PCB reuse across device grades. Typical applications include low-cost industrial controls, appliance control boards, sensor signal conditioning, simple PWM motor drivers, and battery-powered handheld instruments where SSOP-20 footprint, EPROM one-time programmability, and proven PIC16 mid-range toolchain support are decisive selection criteria. When designing with this device, plan code migration paths early: OTP EPROM cannot be re-programmed, so any firmware bug becomes a scrapped PCB. Also budget a 100 nF decoupling capacitor adjacent to VDD with a wide ground return, and respect the 6.0V absolute maximum to avoid latch-up in industrial bus-powered designs. This page combines distributor pricing, parametric alternatives, and design considerations not collated on the manufacturer datasheet to accelerate sourcing and board bring-up.

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PIC16C622/JW - 8-Bit 20MHz CMOS MCU, 3.5KB EPROM, 18-CERDIP
PIC16C622/JW

PIC16C622/JW - 8-Bit 20MHz CMOS MCU, 3.5KB EPROM, 18-CERDIP

The Microchip Technology PIC16C622/JW is an 8-bit CMOS RISC microcontroller from the PIC16C family, featuring a 20MHz maximum clock speed, 3.5KB (2K x 14) of One-Time-Programmable (OTP) EPROM program memory, and 128 bytes of data RAM, all housed in an 18-pin windowed CERDIP package for UV-erasable development. Headline parameters include 13 digital I/O lines, a Harvard RISC architecture with 35 single-cycle instructions, and an external oscillator interface supporting crystal, resonator, or external clock sources across a 3.0V to 6.0V supply range. A PIC16C-series microcontroller is a member of the Microchip 8-bit PIC RISC family, characterized by a separate program and data bus (Harvard architecture) that allows simultaneous instruction fetch and data access. The PIC16C line is the original CMOS-EPROM cousin of the flash-based PIC16F line, designed for legacy, low-volume, and one-time-programmable applications where UV erasure for reuse or field reprogramming is desired. Within the broader hierarchy, PIC16C sits under PICmicro -> 8-bit microcontroller -> microcontroller -> embedded computing -> semiconductor. The /JW suffix specifically denotes the ceramic windowed package for prototype development. Key features include 14-bit instruction word width, an internal watchdog timer with on-chip RC oscillator, power-saving SLEEP mode, in-circuit serial programming (ICSP) capability, and a programmable code-protection scheme. The device provides two 8-bit timers (Timer0 and Timer2-equivalent), one capture/compare/PWM module, and a 5-channel 8-bit ADC on selected variants. The 18-CERDIP windowed package allows UV erasure of the EPROM for code iteration during development, a feature lacking in standard OTP-only /JW-less variants. The PIC16C622's RISC architecture delivers near 5 MIPS performance at 20MHz, with most instructions executing in a single 200ns instruction cycle. Internal features include a 4MHz internal RC oscillator option (on selected variants), a brown-out reset circuit, and interrupt capability with hardware context saving. The wide 3.0V to 6.0V operating voltage range makes it suitable for both 3.3V and 5V system designs without level translation. Typical applications include industrial control systems, automotive body electronics, consumer appliance controllers, and legacy replacement for older PIC16C5x designs requiring more I/O and peripheral features. The windowed CERDIP package makes the /JW variant specifically suited for engineering development and code validation rather than high-volume production. When designing with the PIC16C622/JW, note that the ceramic windowed CERDIP package is significantly more expensive than plastic OTP or flash equivalents and is intended for development. Production runs should migrate to the PIC16C622-20/P or PIC16F622-20/P flash-based pin-compatible variants after code is finalized. The part requires a 13V nominal Vpp supply for EPROM programming and an external programming clock. This page synthesizes distributor pricing, lifecycle information, drop-in same-package alternatives, and practical design notes that are not found in the manufacturer datasheet alone, helping engineers select the right PIC16C family member for legacy maintenance and new design.

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PIC16C622A-04/P - 8-Bit 4MHz OTP MCU, 3.5KB | Microchip
PIC16C622A-04/P

PIC16C622A-04/P - 8-Bit 4MHz OTP MCU, 3.5KB | Microchip

The Microchip PIC16C622A-04/P is a member of the PIC16C6xx mid-range family of 8-bit CMOS microcontrollers housed in a through-hole 18-pin PDIP package. It integrates a 3.5KB (2K x 14-bit) One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 13 general-purpose I/O pins, all driven by a 4MHz internal oscillator-compatible clock. The device executes 35 single-word instructions with a 200 ns instruction cycle (1 µs per two-cycle branch), giving it deterministic throughput for embedded control. An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripheral I/O on one die, enabling compact embedded designs. Within the taxonomy, the PIC16C622A belongs to the 8-bit microcontroller hypernym, which descends from microcontroller -> microprocessor -> integrated circuit -> semiconductor. As an OTP-EPROM-based part, it is field-programmable exactly once, in contrast to Flash-based PIC16F variants which are re-programmable, making it well suited to fixed-cost high-volume consumer and industrial control. Key features include a 2K x 14 program word OTP, 128 bytes of data RAM, two 8-bit timers (Timer0, Timer2) and one 16-bit Timer1 with capture/compare capability, a 10-bit resolution analog comparator module with two comparators, an internal voltage reference, a programmable Watchdog Timer with its own on-chip RC oscillator, and 13 I/O pins with individual direction control. The interrupt architecture supports 10 sources through a single interrupt vector with context saving, and the device supports in-circuit serial programming (ICSP). Architecturally, the PIC16C622A uses a 14-bit wide instruction word and a Harvard architecture with separate program and data buses. The OTP cell is programmed by injecting hot electrons onto a floating gate, then read back through a sense amplifier. Compared with mask-ROM PIC16C62x devices, the OTP version allows prototype and low-volume production without the NRE mask charge, and Microchip offers a windowed UV-erasable JW package for development. Typical applications include appliance control, lighting ballasts, sensor signal conditioning with on-chip comparators, automotive body electronics subsystems, and any low-cost fixed-function 8-bit control node. The wide 3.0 V to 6.0 V operating range permits both 3.3 V and 5 V designs. Engineers migrating from the PIC16C62x mask-ROM family to an OTP-based device with identical pinout will find this a drop-in option. The available -04 speed grade (4 MHz) and -20 speed grade (20 MHz) cover most embedded control tasks. The device is supported by the Microchip MPLAB development environment, including MPASM assembler, MPLAB-SIM simulator, and PICSTART Plus / MPLAB PM3 device programmers. One key design consideration: because this is a OTP-EPROM part, firmware is committed permanently after the first programming cycle; any firmware revision requires a new device and a redesigned PCB programming flow. For development cycles requiring repeated reprogramming, the equivalent PIC16F62x Flash family is recommended. Additionally, ESD precautions must be observed during OTP programming to avoid cell damage. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing actionable guidance unavailable on distributor catalog pages.

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PIC16C622A-04/SS - 8-bit OTP MCU, 4MHz, 3.5KB EPROM | Microchip
PIC16C622A-04/SS

PIC16C622A-04/SS - 8-bit OTP MCU, 4MHz, 3.5KB EPROM | Microchip

The Microchip Technology PIC16C622A-04/SS is an 8-bit EPROM-based CMOS microcontroller from the PIC16C family, featuring a RISC architecture with 35 single-word instructions, 4 MHz maximum operating frequency, 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and 13 general-purpose digital I/O lines. It is housed in a 20-pin SSOP (Shrink Small Outline Package) and operates from a 3.0 V to 6.0 V supply range, supporting both 3.3 V and 5 V designs. An 8-bit microcontroller is a single-chip computer that integrates a CPU, memory (program and data), and peripherals onto one die, executing one byte at a time. The PIC16C62x family sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. RISC (Reduced Instruction Set Computer) designs such as the PIC16C use a small, fixed-width instruction set to achieve deterministic instruction timing (typically 100 ns per instruction at 20 MHz, 250 ns at 4 MHz) which simplifies real-time embedded control. Key features of the PIC16C622A-04/SS include an integrated analog comparator with programmable on-chip voltage reference, a 16-bit timer/counter (TMR1) with internal 200 ns resolution, a Watchdog Timer with its own on-chip RC oscillator for reliable resets, code protection to prevent unauthorized memory reads, and an OTP memory windowed package option for prototype programming. The A variant adds Microchip's enhanced feature set over the original PIC16C622. Technically, the device employs a Harvard architecture with separate program and data buses, allowing instruction fetch and data access to occur simultaneously. The 14-bit wide instruction word and 8-bit data path balance code density against computational simplicity. Power consumption is typically below 2 mA active at 5 V/4 MHz, with a sleep mode drawing microampere-level standby current. Typical applications include consumer appliance control, security and access systems, automotive body electronics, low-cost sensor interfaces, IR remote control receivers, and small form-factor industrial controllers. Its compact 20-pin SSOP package suits space-constrained designs. When designing with this part, choose the right oscillator configuration (RC, XT, HS) early, ensure MCLR reset hardware is correct, and reserve the comparator pins if not used as analog inputs. OTP means firmware must be fully validated before programming, as the device cannot be erased. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in any single distributor listing, giving engineers and procurement a faster decision path.

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PIC16C622A-04E/P - 4MHz 8-Bit CMOS MCU, 3.5KB OTP | Microchip
PIC16C622A-04E/P

PIC16C622A-04E/P - 4MHz 8-Bit CMOS MCU, 3.5KB OTP | Microchip

The Microchip Technology PIC16C622A-04E/P is an EPROM-based 8-bit CMOS microcontroller in the PIC16C family, delivering 4 MIPS performance at 4 MHz from a 2.5 V to 6.0 V supply in an 18-pin PDIP through-hole package. It integrates 3.5 KB (2 K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, 13 digital I/O pins, and a 13-bit instruction word with an 8-bit data path. The "-04E" suffix denotes a 4 MHz maximum clock speed and the "E" extended temperature grade (-40 °C to +125 °C), while the "/P" suffix identifies the PDIP-18 package. A microcontroller (MCU) is a single-chip computer that contains a CPU core, program and data memory, peripherals, and I/O on a single die. MCUs are the smallest members of the embedded computing hierarchy (microcontroller -> microprocessor -> SoC -> computer) and are used wherever deterministic, low-cost, low-power control is needed. The PIC16C family uses a RISC Harvard architecture with a 14-bit instruction word optimized for compact code density, an approach Microchip introduced in the 1970s and that remains popular in cost-sensitive 8-bit designs. Key features include a fully static design for low-power operation, wide 2.5 V-6.0 V supply range, internal watchdog timer, power-on reset, brown-out reset, and two analog comparators with programmable reference. Power consumption is typically 15 µA at 5 V/4 MHz and as low as 1 µA at 3 V/32 kHz, making this part well-suited to battery-backed industrial controllers. The architecture pairs a 13-bit program counter with hardware multiply support and a 14-bit-wide EPROM/ROM store, giving the device a code-density advantage over 8-bit-worded CISC alternatives. The two on-chip analog comparators can be configured as a single differential amplifier, a window comparator, or as general-purpose logic gates via the TRIS registers, reducing the need for external analog components. Typical applications include appliance control (washing machines, microwave ovens), industrial sensor interfaces, automotive body electronics (pre-CAN nodes), battery chargers, and remote controls. Designers choose the PIC16C622A when they need more on-chip analog capability than the PIC16C620/621 provide while staying within the 18-pin PDIP footprint. When designing with the PIC16C622A-04E/P, remember that the OTP memory is one-time-programmable only - firmware cannot be field-updated. Use an ICSP header for programming and reserve a window in the code for calibration constants. Place a 0.1 µF decoupling capacitor within 5 mm of VDD, and provide a 100 nF plus 10 µF bulk cap on the analog AVss rail if the comparators are enabled. This page synthesizes real-time distributor pricing, drop-in replacement analysis, and practical PCB design notes not found in the standalone datasheet.

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PIC16C622A-04I/P - 8-bit 4MHz OTP MCU 3.5KB | Microchip
PIC16C622A-04I/P

PIC16C622A-04I/P - 8-bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C622A-04I/P is an EPROM-based 8-bit CMOS microcontroller with 4 MHz maximum clock input, 3.5 KB (2K x 14) OTP program memory, and 128 bytes of RAM, housed in a 18-pin PDIP through-hole package. It integrates 13 I/O pins, one 8-bit timer/counter, and a capture/compare/PWM (CCP) module plus a USART, making it well suited to legacy embedded control applications. The '-04' speed suffix denotes a 4 MHz oscillator maximum, while the 'I' temperature grade specifies an industrial -40C to +85C operating range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data memory (RAM), and peripheral I/O on one die. The PIC16C62x family belongs to Microchip's mid-range PIC16 architecture, sitting hierarchically between baseline PIC10/12/14 devices and enhanced PIC17/18 families. Compared with 32-bit Cortex-M cores, 8-bit MCUs trade raw performance for deterministic interrupt latency, low power, smaller code footprint, and BOM cost. Key features of the PIC16C622A include 35 single-word instructions (200 ns instruction cycle, two-cycle branches), an 8-level deep hardware stack, in-circuit serial programming (ICSP) capability, a watchdog timer with on-chip RC oscillator, power-on reset, brown-out reset, and an internal/external interrupt source. The 13 I/O pins can source/sink 25 mA each, sufficient to drive LEDs, small relays, and optocouplers directly. Technically, the device uses a RISC Harvard architecture with separate program and data buses to allow instruction fetch and operand read in one cycle. The 14-bit instruction word enables direct, immediate, and relative addressing. Two 8-bit timer/counters (TMR0, TMR2) plus one 16-bit timer/counter (TMR1) are available on some family variants; on the PIC16C622A itself TMR0 is the primary counter. Typical applications include industrial control panels, automotive body electronics (non-safety), appliance controls, security sensor interfaces, and remote keyless entry receivers. Its OTP program memory makes it best suited for production designs where firmware is stable and not field-upgradable. When designing with this part, note that OTP memory cannot be reprogrammed - engineering samples use the windowed JW package, and firmware changes after volume commitment require a new mask. For new designs, the flash-based PIC16F628A is usually recommended as the modern equivalent. This page synthesizes distributor pricing, pin-compatible alternatives, and engineering trade-offs not found in the standalone manufacturer datasheet.

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PIC16C622A-04I/SO - 8-Bit 4MHz OTP MCU 18-SOIC | Microchip
PIC16C622A-04I/SO

PIC16C622A-04I/SO - 8-Bit 4MHz OTP MCU 18-SOIC | Microchip

The Microchip Technology PIC16C622A-04I/SO is an 8-bit EPROM/OTP-based CMOS microcontroller in the PIC16C family, running up to 4 MHz with a 1 µs instruction cycle in an 18-pin SOIC package. The device integrates 3.5 KB (2K x 14) of One-Time-Programmable program memory, 128 bytes of RAM, and 13 digital I/O pins, providing a compact 8-bit solution for cost-sensitive embedded designs. The 'A' revision enhances the original PIC16C622 with extended instruction set support and improved oscillator options while maintaining full backward compatibility with the PIC16C62x series pinout. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. The PIC16C622A belongs to the mid-range 8-bit PICmicro family, sitting within Microchip's broader taxonomy of 8-bit microcontrollers -> microcontrollers -> embedded processors -> integrated circuits. Its RISC-style Harvard architecture with 35 single-cycle instructions simplifies firmware development while delivering deterministic real-time behavior suitable for low-power control loops. Key features include an operating voltage range of 2.5 V to 5.5 V (industrial temperature -40 °C to +85 °C as denoted by the 'I' suffix), two 8-bit timers plus one 16-bit timer/counter with capture/compare/PWM capability, a USART/SCI serial port, an analog comparator, and a watchdog timer with on-chip RC oscillator for reliable operation. The PIC16C622A also provides a 4 MHz internal-execution rate from an external 4 MHz crystal, an 8-bit parallel slave port, and up to 13 bidirectional I/O pins with high-current sink/source capability. Architecturally, the device uses a 14-bit wide program word with separate program and data buses (Harvard architecture), enabling simultaneous instruction fetch and data access. The 4 MHz oscillator combined with a 4:1 instruction-pipeline divider delivers a 1 µs single-cycle instruction time (200 ns cycle at 20 MHz), while the on-chip Power-on Reset, Brown-out Reset, and Watchdog Timer provide robust field-deployment reliability. Typical applications include consumer appliance control, security system panels, automotive body modules, industrial sensor interfaces, low-cost remote controls, and small-form-factor motor-driver front-ends. The wide operating voltage and industrial temperature range also suit battery-powered instrumentation and HVAC peripheral controllers. When designing with this part, note that OTP memory cannot be re-programmed in-circuit; for development or low-volume production, choose a Flash-based equivalent such as PIC16F627A or PIC16F628A in the same 18-pin SOIC footprint to reuse PCB layout and firmware libraries. This page synthesizes distributor stock and pricing, drop-in same-package alternatives from Microchip's PIC16C family, and practical design notes beyond the manufacturer datasheet - supporting faster sourcing decisions for engineering and procurement teams.

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PIC16C622A-04I/SS - 8-Bit OTP MCU, 4MHz, 3.5KB | Microchip
PIC16C622A-04I/SS

PIC16C622A-04I/SS - 8-Bit OTP MCU, 4MHz, 3.5KB | Microchip

The Microchip PIC16C622A-04I/SS is a CMOS OTP-based 8-bit microcontroller from the PIC16C family, executing instructions in 200 ns at 4 MHz and packaged in a 20-pin SSOP (0.209 inch / 5.30 mm body width). It integrates 3.5 KB of one-time-programmable program memory (2K x 14), 128 bytes of RAM, 13 digital I/O lines, two analog comparators, an 8-bit timer/counter (TMR0), and a watchdog timer with its own on-chip RC oscillator. An 8-bit microcontroller is a single-chip computer that processes data 8 bits at a time and integrates CPU, memory, and peripherals on one die. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) architecture with a small, fixed instruction set (35 single-word instructions for the PIC16C6xx family), which simplifies decoding and lets the device execute most instructions in a single instruction cycle. The PIC16C622A belongs to the mid-range PIC family - positioned between base-line PIC10/12/16 devices and the PIC17/PIC18 high-end family - and is widely used in cost-sensitive embedded control where ROMless or OTP flexibility is acceptable. Key features include a wide 3.0 V to 6.0 V operating range, low-power CMOS design, programmable code protection, an in-circuit serial programming (ICSP) interface via RB6/RB7, and two on-chip comparators that can be used as a voltage reference or for analog signal conditioning. The '04' speed grade marks 4 MHz operation; the 'I' suffix denotes the industrial temperature grade (-40 C to +85 C); the '/SS' suffix denotes the 20-pin SSOP package. Typical applications include appliance control, sensor interfaces, consumer electronics, battery chargers, simple motor control loops, and low-cost replacement of discrete logic. The internal comparators make the part especially attractive for power-supply monitoring, battery-level detection, and threshold-detection circuits. The 13 I/O pins can directly drive LEDs, keypads, or low-side transistors. Designers should pay attention to OTP programming - once programmed, the part cannot be electrically erased, so development is normally done with a windowed (JW) or flash equivalent (PIC16F622) before committing to the OTP version. The SSOP package requires standard surface-mount reflow; pad design follows JEDEC MS-150 guidelines. Brown-out detection is internal but not user-configurable, and the device has no on-chip hardware UART (asynchronous serial) - any serial bit-banging must be done in firmware on the I/O pins. This page synthesizes distributor pricing, OTP programming considerations, and practical application notes not found in the bare datasheet.

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PIC16C622A-20/SO - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
PIC16C622A-20/SO

PIC16C622A-20/SO - 8-Bit 20MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C622A-20/SO is an EPROM/OTP-based 8-bit CMOS microcontroller from the PICmicro mid-range family, executing one instruction in 200ns at the 20MHz maximum clock rate. It integrates 3.5KB (2K x 14) of one-time-programmable program memory, 128 bytes of RAM, and 13 digital I/O pins in an 18-pin wide-body SOIC package. The device operates from a single 2.5V to 5.5V supply, making it equally suited to 3.3V and 5V logic designs, and is specified over the commercial 0C to +70C temperature range. What is a PIC16C62X microcontroller? It is a member of Microchip's mid-range PIC family built on a RISC (Reduced Instruction Set Computer) Harvard architecture that uses separate program and data buses. The PIC16C62X series pairs a 14-bit wide instruction word with an 8-bit data path, providing higher code density than the entry-level 12-bit PIC cores while keeping the instruction set small (only 35 single-word instructions to learn). Positioned in the hierarchy as microcontroller -> embedded MCU -> 8-bit MCU -> PIC micro -> semiconductor, the PIC16C62X family is widely used in appliance controls, security panels, automotive body electronics, IR remote controls, and low-cost consumer products. Key features of the PIC16C622A include two on-chip analog comparators (the defining trait that distinguishes the 'C62X family from generic PIC16C55x/56x/57x parts), a watchdog timer with on-chip RC oscillator, power-on reset, brown-out reset, an internal 4MHz RC oscillator option to reduce external component count, and a programmable code-protection scheme. The OTP EPROM is written with an external device programmer such as the Microchip MPLAB PM3, and the part supports in-circuit serial programming (ICSP) on most I/O pins via dedicated programming lines. Typical applications include security alarm panels, appliance controllers, sensor signal conditioning, IR remote receivers, automotive interior lighting and accessory modules (non-safety), and small motor-driver interfaces. The integrated comparators allow direct analog-sensor interface (light, temperature, current) without a separate op-amp, lowering BOM cost in volume production. When designing with the PIC16C622A-20/SO, note that the OTP variant cannot be reprogrammed in-circuit; for development, use the JW windowed or QFP UV-erasable package. Place a 0.1uF decoupling capacitor as close to the VDD/VSS pins as possible and follow Microchip's recommended PCB layout for the chosen oscillator to avoid start-up problems and erratic resets. This page synthesizes distributor pricing (as of 2026-10-09), Microchip same-family drop-in alternatives, and practical design notes not assembled in the manufacturer datasheet alone.

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PIC16C622A-20E/P - 3.5KB OTP 8-bit MCU, 18-DIP | Microchip
PIC16C622A-20E/P

PIC16C622A-20E/P - 3.5KB OTP 8-bit MCU, 18-DIP | Microchip

The Microchip Technology PIC16C622A-20E/P is an EPROM-based 8-bit CMOS microcontroller from the PIC® 16C family, delivering 3.5KB (2K x 14) of one-time-programmable (OTP) program memory, 128 bytes of RAM, and 13 I/O pins in a through-hole 18-pin DIP package. It operates up to 20 MHz from a 5V supply and is rated for the extended automotive temperature grade. The part suffix "-20E" denotes 20 MHz maximum clock and the "E" industrial/automotive temperature grade (-40C to +125C), with the "/P" package code identifying the 0.300-inch-wide PDIP-18 plastic DIP. A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC processor with separate program and data buses, optimized for deterministic real-time embedded control. The PIC16C622A belongs to the mid-range PIC14-instruction family, uses a 14-bit instruction word, and integrates analog peripherals including a comparator module and a capture/compare/PWM (CCP) block that simplifies closed-loop control. In the wider taxonomy it sits as: PIC16C622A -> PIC16C62x family -> PIC16 mid-range -> PICmicro 8-bit MCU -> embedded microcontroller -> semiconductor. The OTP EPROM cell enables fast prototype-to-production migration for cost-sensitive and automotive applications. Key features include 3.5KB OTP program memory, 128 bytes of data RAM, 13 digital I/O pins, an integrated analog comparator, a 16-bit timer/counter with capture/compare/PWM, an 8-bit timer/counter, a 5-channel 8-bit ADC, and a watchdog timer with its own on-chip RC oscillator. Power-managed Sleep mode and a hardware Universal Synchronous/Asynchronous Receiver/Transmitter (USART/SCI) round out the peripheral set. Compared with the earlier PIC16C622, the "A" silicon revision improves brown-out behaviour and ESD robustness. Architecturally the device uses a 14-bit instruction word, two-cycle instruction execution for branches and a four-cycle oscillator start-up from Power-on Reset. Its low-power CMOS design draws only microampere-level Sleep currents while preserving full register retention, making it a strong fit for battery-backed and automotive applications where quiescent draw matters. Typical applications include automotive body controllers and instrument clusters, HVAC fan control, appliance user-interface panels, low-end security keypads, and remote sensor transmitter nodes. The wide -40C to +125C automotive temperature range makes it particularly well-suited to under-hood and dashboard electronics that must survive harsh thermal environments. When designing with the PIC16C622A-20E/P, place a 100 nF decoupling capacitor within 5 mm of VDD and reserve the ICSP programming footprint even on production boards - OTP parts must be programmed once, and in-system programming access greatly simplifies rework. Be aware that OTP cannot be erased, so design firmware carefully before committing to volume programming.

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