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PIC16C63-04E/SO

PIC16C63-04E/SO - 8-Bit 4MHz OTP MCU, 7KB, 28-SOIC | Microchip

The Microchip Technology PIC16C63-04E/SO is an 8-bit CMOS OTP microcontroller in the PIC16C6X family, operating at 4 MHz with 7 KB of program memory (4K x 14), 192 bytes of RAM, and 22 digital I/O pins, housed in a 28-pin SOIC (SO) package. It executes 35 single-word RISC instructions, supports a wide operating voltage range of 2.5 V to 6.0 V, and is qualified to an extended industrial temperature grade of -40 °C to +125 °C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and configurable peripheral interfaces such as timers, capture/compare/PWM modules, serial ports, and parallel I/O. Within the broader taxonomy, the PIC16C63 belongs to the 8-bit microcontrollers category, which sits below 16-bit and 32-bit MCUs in compute density but offers the lowest cost and simplest toolchain for embedded control. Its role in a system is to read sensor or user inputs, run deterministic firmware, and drive outputs such as relays, displays, indicators, or communication links. Key features of the PIC16C63-04E/SO include 192 bytes of data RAM, 128 bytes of EEPROM, three timers, a 5-channel 8-bit ADC, a USART for asynchronous and synchronous serial communication, an SPI/I2C synchronous serial port, and a capture/compare/PWM (CCP) module. The wide 2.5 V to 6.0 V supply range simplifies integration into 3.3 V, 5 V, and battery-backed designs, while typical run current of 15 µA at 5 V, 4 MHz, and 1 µA at 3 V, 32 kHz makes the part well suited to power-constrained applications. Architecturally, the PIC16C63 uses a Harvard RISC core with separate program and data buses, single-cycle instruction execution for most opcodes, and a 14-bit instruction word optimized for compact code density. The OTP (one-time programmable) program memory uses windowed EPROM technology, which makes this part particularly suitable for mature production runs where firmware is finalized. Typical applications include industrial control logic, automotive body and chassis subsystems, consumer appliance controllers, sensor signal conditioning front-ends, and embedded communication bridges. When designing with this part, place a 0.1 µF decoupling capacitor close to VDD and consider migrating to a Flash-based PIC16F equivalent for new designs, since OTP parts cannot be reprogrammed in-circuit. The PIC16C63-04E/SO is being phased out in favor of Flash devices in the same 28-pin SOIC footprint. This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a single reference for sourcing and migration decisions.

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PIC16C63-04E/SP

PIC16C63-04E/SP - 8-bit CMOS MCU, 7KB EPROM, 22 I/O | Microchip

The Microchip Technology PIC16C63-04E/SP is an 8-bit RISC CMOS microcontroller built on EPROM/ROM technology, featuring 7KB of program memory (4K x 14), 192 bytes of RAM, and 22 digital I/O pins in a 28-pin SPDIP (SP) package. Operating up to 4 MHz clock speed (the "-04" speed grade), the part supports supply voltages from 4.0V to 5.5V and is qualified for the Extended temperature range (-40C to +125C). The "E" suffix denotes the EPROM windowed ceramic package variant used for prototyping and engineering development. A PIC microcontroller is a low-power, high-performance 8-bit RISC (Reduced Instruction Set Computer) MCU from Microchip's mid-range PIC16 family. PIC MCUs sit at the foundation of embedded control systems, providing deterministic single-cycle instruction execution, on-chip peripherals (timers, USART, capture/compare/PWM), and non-volatile program memory in a single chip. The PIC16C63 belongs to the mid-range PIC16C6X family, which uses EPROM (erasable programmable read-only memory) technology for code storage, allowing code to be erased via an ultraviolet window before reprogramming. This makes PIC16C parts well suited to engineering development, low-volume production, and applications where field firmware updates via UV erase are acceptable. Key features include a fully-static design supporting DC to 20 MHz operation, low-power consumption of 15 uA typical at 5V/4MHz and 1 uA typical at 3V/32kHz, three hardware timers, a USART serial port, 22 I/O pins, and a 14-bit instruction word. The architecture provides only 35 single-word instructions, all of which execute in a single cycle except for program branches (two cycles). Brown-out reset and power-on reset are integrated on chip, and an integrated watchdog timer improves field reliability. The SPDIP-28 (Skinny Plastic DIP) footprint is the industry-standard through-hole 0.3-inch DIP-28 mechanical outline, allowing easy breadboarding and socketed programming. The PIC16C63 is implemented using Microchip's CMOS EPROM/ROM technology with a Harvard architecture - separate program and data buses - enabling simultaneous instruction fetch and data access. The 8-bit ALU, 14-bit instruction width, and 8-level hardware stack provide deterministic real-time control. Compared with 8051-class MCUs, the PIC16C6X family delivers higher MIPS per MHz (4 MIPS at 10 MHz vs typically 1 MIPS for an 8051 at 12 MHz) and lower active current draw, making it attractive for battery-powered and thermally constrained designs. Typical applications include industrial control and automation, automotive body and chassis subsystems, instrumentation, sensor signal conditioning, low-speed serial communication links, and educational/development platforms. The USART peripheral supports RS-232/RS-485 communication, while the CCP module supports PWM output for motor or LED control. The EPROM windowed ceramic package is reserved for development only - high-volume production should migrate to the OTP (one-time programmable) PIC16C63-04/SP variant, which uses the same SPDIP-28 footprint but is lower cost. When designing with the PIC16C63-04E/SP, note that the EPROM windowed ceramic package is significantly more expensive than the OTP plastic variant, so it should be reserved for development and engineering samples. All PIC16C63 speed and temperature variants share the same SPDIP-28 pinout, enabling a single PCB layout to support engineering, prototype, and production builds. Ensure supply voltage is held within 4.0V to 5.5V, with decoupling capacitors placed close to VDD/VSS pins. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select the right variant for development versus production.

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PIC16C63-04I/SP

PIC16C63-04I/SP - 8-Bit 4MHz OTP MCU 7KB | Microchip

The Microchip PIC16C63-04I/SP is an 8-bit CMOS OTP (One-Time Programmable) microcontroller based on the PIC16C PIC RISC architecture, operating at 4 MHz with 7 KB (4K x 14) program memory and 192 bytes of RAM, housed in a 28-pin SPDIP (Skinny Plastic DIP) package. The "I" suffix indicates the industrial temperature grade (-40C to +85C), while "/SP" designates the SPDIP through-hole package. What is a PIC16C OTP microcontroller? A PIC16C-series microcontroller is an 8-bit CMOS RISC MCU from Microchip Technology that uses One-Time Programmable (OTP) EPROM for program storage. The PIC16C63 belongs to the mid-range PIC family, which sits within the broader hierarchy: 8-bit microcontroller -> PIC micro -> PIC16C mid-range -> RISC CPU. The architecture offers 35 single-word instructions with single-cycle execution (200 ns at 20 MHz) except for program branches, which are two-cycle. It is purpose-built for embedded control where deterministic instruction timing and low component cost matter more than on-chip flash reprogrammability. Key features of the PIC16C63-04I/SP include 22 digital I/O pins, an 8-bit timer/counter (TMR0), a 16-bit timer/counter (TMR1), an 8-bit PWM module, a Watchdog Timer (WDT) with its own on-chip RC oscillator, Power-on Reset (POR), Brown-out Reset (BOR), and an analog comparator. The 4 MHz maximum clock speed is set by the "-04" speed suffix, distinguishing it from the -10 (10 MHz) and -20 (20 MHz) variants. The part is designed for 4V to 6V supply operation with low power consumption. Typical applications include industrial control, appliance control, automotive body electronics, sensor interfacing, low-end remote controls, and educational development boards. The 22 I/O pins and built-in PWM make it suitable for motor drive, lighting control, and simple closed-loop analog systems. The OTP memory is appropriate for high-volume production where firmware is fixed and reprogrammability is not required. When designing with this device, ensure your firmware is fully verified before programming because OTP parts cannot be erased and reprogrammed. Use the JW (windowed) ceramic package for prototype development, then move to the SPDIP or SOIC OTP version for production.

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PIC16C63-10/SO

PIC16C63-10/SO - 8-Bit 10MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C63-10/SO is an 8-bit CMOS microcontroller from the PIC16C6X family, offering 10 MHz maximum clock speed, 7 KB (4K x 14 words) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O pins in a 28-pin SOIC wide-body package. An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, program memory (ROM/OTP/Flash), data memory (RAM), and peripheral interfaces on a single die. PIC microcontrollers use a Harvard RISC architecture that executes most instructions in a single clock cycle, placing them in the broader taxonomy: microcontroller -> embedded processor -> semiconductor -> integrated circuit. The OTP variant is programmed once and is well suited to cost-sensitive, high-volume production where firmware is fixed. Key features of the PIC16C63-10/SO include 10 MHz operation, a wide supply voltage range of 4.0 V to 6.0 V, 22 I/O lines, integrated capture/compare/PWM and USART peripherals, and very low power consumption (typical 15 uA at 5 V / 4 MHz). The device carries 35 single-word RISC instructions, with all instructions completing in one cycle except program branches which take two. The architecture is fully static, allowing the clock to be stopped without losing internal state. Commercial, Industrial, and Extended temperature grades are available, supporting both benign and harsh operating environments. The 28-SOIC wide (7.50 mm) package balances I/O count with board-friendly surface-mount assembly. Typical applications include appliance control, security and alarm panels, industrial sensor conditioning, automotive body electronics, and general-purpose embedded control boards. The PIC16C6X peripheral set - timers, CCP, USART, and parallel I/O - addresses most small-form-factor control tasks without external glue logic. When designing with this MCU, ensure decoupling is placed within 5 mm of VDD, and that MCLR is pulled up correctly via a resistor and (optionally) a diode to VDD for reliable reset. The OTP memory means firmware must be 100% verified before programming - allocate extra prototype cycles using the windowed (JW) variant during development. This page synthesizes distributor pricing, drop-in alternatives from the same Microchip PIC16C6X family, and practical design notes not found in the standalone manufacturer datasheet - giving engineers a faster path from selection to production.

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PIC16C63-10/SP

PIC16C63-10/SP - 8-Bit 10MHz OTP MCU | Microchip Technology | 28-SPDIP

The Microchip Technology PIC16C63-10/SP is a high-performance 8-bit CMOS microcontroller from the PIC16C family operating at 10 MHz with 7 KB (4K x 14) of one-time programmable (OTP) program memory. It is housed in a 28-pin SPDIP (Skinny Plastic DIP) package and provides 22 digital I/O pins, 192 bytes of RAM, and a rich peripheral mix including a USART/SCI, MSSP (SPI/I2C), two 8-bit timers and one 16-bit timer with capture/compare/PWM, an 8-bit ADC, and a parallel slave port. The device is fabricated in low-power, high-speed CMOS EPROM/ROM technology with a fully static design that supports DC to 20 MHz operation. What is an OTP microcontroller? An OTP (One-Time Programmable) MCU is a microcontroller whose program memory is based on EPROM cells that can be written once and then read indefinitely. In the broader taxonomy, OTP MCUs sit between mask-ROM MCUs (cheapest, factory programmed) and flash-based MCUs (re-programmable in-circuit). OTP parts are favored for low-to-medium volume production where code is stable, no firmware updates are required in the field, and cost-per-unit must remain low. The PIC16C63 specifically belongs to Microchip's mid-range PIC16C6x family, sitting in the hierarchy: 8-bit MCU -> RISC MCU -> PIC -> PIC16C -> PIC16C6x. Key features include wide operating voltage from 2.5 V to 6.0 V (the legacy PIC16C63-10/SP variant is typically used at 4.0-5.5 V), commercial, industrial, and extended temperature ranges, low-power consumption of 5 mA typical at 5 V / 4 MHz and 1 µA typical at 3 V / 32 kHz, and a high-performance RISC CPU with only 35 single-word instructions to learn. All instructions execute in a single cycle except program branches, which take two cycles. The PIC16C63 architecture uses a Harvard RISC core with separate program and data buses, achieving 200 ns instruction execution at 10 MHz. This fast execution, combined with a deterministic interrupt structure and hardware multiply-by-constant support, makes it well-suited for real-time control applications. The integrated MSSP and USART allow flexible serial communication without external glue logic. Typical applications include industrial control, automotive body electronics, sensor interfacing, motor control, smart card readers, security systems, and embedded instrumentation. The wide voltage range and low-power modes also make it suitable for battery-powered or energy-harvesting edge devices. Design consideration: When migrating from PIC16C63 to PIC16F63, note that the Flash-based PIC16F family allows in-circuit re-programming but is not OTP. Designers should always verify pin compatibility through Microchip's PinPack compatibility chart before substitution. This page synthesizes distributor pricing, drop-in alternatives from the same PIC16C family, and practical design notes not found in the manufacturer datasheet alone, helping engineers source and qualify this mature 8-bit MCU.

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PIC16C63-10I/SO

PIC16C63-10I/SO - 8-Bit 10MHz 7KB OTP MCU | Microchip 28-SOIC

The Microchip Technology PIC16C63-10I/SO is an 8-bit CMOS RISC microcontroller from the PIC16C6X family, offering 7KB (4K x 14) One-Time Programmable (OTP) program memory and operating at up to 10 MHz in a 28-pin SOIC (SO) package. It integrates 192 bytes of RAM, 22 general-purpose I/O lines, and three serial communication peripherals (I2C, SPI, and UART/USART) on-chip, with on-board Brown-out Detect, Power-on Reset, Watchdog Timer and PWM capability. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals around an 8-bit data bus. The PIC16C6X family belongs to the wider PICmicro 8-bit family, itself a sub-class of RISC microcontrollers used for embedded control. The PIC16C63 uses a Harvard architecture with a 14-bit instruction word optimized for deterministic single-cycle execution, sitting in the broader product taxonomy: 8-bit MCU -> RISC MCU -> microcontroller -> embedded IC -> semiconductor. Key features of the PIC16C63-10I/SO include 35 single-word instructions (most executed in one instruction cycle, except program branches which take two), an operating speed up to 10 MHz, a wide operating voltage range of 2.5 V to 6.0 V, and three timer modules. Industrial temperature range (-40C to +85C), low power consumption (typical 15 uA at 5 V / 4 MHz and 1 uA at 3 V / 32 kHz), and CMOS EPROM-based OTP memory make the part suited to legacy industrial embedded designs. The architecture uses fully static CMOS logic, which means the clock can be stopped without losing internal state, and supports DC to 10 MHz operation. The integrated peripherals remove the need for external timers, UARTs and watchdog circuits, while the 22 I/O pins allow direct interface to keypads, displays, sensors and communication buses. Typical applications include industrial control systems, motor control, automotive subsystems, consumer electronics, sensor interface boards, and serial-bus bridges. The wide voltage range and integrated peripherals make the PIC16C63 a common choice for legacy 8-bit designs transitioning from PIC16C5X or PIC16C6X OTP prototypes to flash-based midrange PIC16F parts. When designing with this device, note that OTP memory is one-time programmable and cannot be field-updated; for in-application reprogrammability use the flash-based PIC16F63. Ensure the maximum clock frequency of 10 MHz is observed with the chosen oscillator configuration, and follow Microchip's recommended decoupling layout (0.1 uF VDD pin + bulk capacitor) to ensure robust Brown-out Reset behavior. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C63-20/SO

PIC16C63-20/SO - 8-Bit 20MHz 7KB OTP MCU 28-SOIC | Microchip

The Microchip Technology PIC16C63-20/SO is an 8-bit PIC16C-series CMOS microcontroller built on Microchip's EPROM/ROM-based architecture, running at up to 20 MHz clock speed with 7KB (4K x 14) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O pins, housed in a 28-pin SOIC (SO) wide-body surface-mount package. It combines low power consumption, a wide operating voltage range, and the legacy PIC mid-range instruction set that requires only 35 single-word instructions to learn, with all instructions executing in a single instruction cycle except program branches which take two cycles. According to the Microchip datasheet, the device is a member of the PIC16C6x family and shares its peripheral layout with the PIC16C66 and PIC16C67 OTP/EPROM-based microcontrollers. An 8-bit microcontroller (MCU) is a small single-chip computer built around an 8-bit data bus, integrating a CPU, non-volatile program memory, working RAM, and peripheral interfaces in one package. Within the broader taxonomy, the PIC16C63 belongs to the PIC16C family of EPROM/ROM-based 8-bit MCUs, which sit under the PIC microcontrollers brand umbrella, under the 8-bit microcontroller category, and ultimately under the integrated circuit / semiconductor hierarchy. Microcontrollers are the foundational processing element in embedded systems, where they manage sensors, actuators, communication buses, and user interfaces across industrial, automotive, and consumer products. Key features of the PIC16C63-20/SO include fully static design (allowing the clock to be stopped without losing internal state), a wide operating voltage range of 2.0V to 6.0V, and low-power figures of approximately 15 uA typical at 5V/4 MHz and 1 uA typical at 3V/32 kHz. The device supports commercial, industrial, and extended temperature grades, and provides 22 digital I/O lines, three timer/counters, a USART, and analog comparator peripherals typical of the mid-range PIC16C6x family. The architecture combines a Harvard-style RISC CPU with separate program and data buses, an internal oscillator option, and power-saving SLEEP mode. The OTP program memory enables one-time factory or in-circuit programming, making the device well suited to production volumes where mask-ROM tooling costs cannot be justified. Typical applications include industrial control logic, automotive body and chassis subsystems, appliance controllers, sensor-interface nodes, low-end embedded user interfaces, and legacy equipment retrofits where PIC16C-series code compatibility is required. When designing with the PIC16C63-20/SO, note that the SOIC-28 wide-body package has higher thermal resistance than the SPDIP windowed variant, so for in-circuit emulation or frequent reprogramming the SPDIP/JW package is preferred. Always confirm Vdd decoupling per the manufacturer datasheet typical-application circuit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not consolidated on the manufacturer datasheet.

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PIC16C63-20I/SO

PIC16C63-20I/SO - 8-Bit 20MHz 7KB OTP MCU 28-SOIC | Microchip

The Microchip Technology PIC16C63-20I/SO is an 8-bit CMOS RISC microcontroller from the PIC16CXX family, featuring a 20 MHz clock input, 7 KB (4K x 14) of one-time-programmable (OTP) program memory, and 192 bytes of RAM, housed in a 28-pin SOIC wide-body package. The PIC16C63-20I/SO delivers up to 20 MHz operating speed with 4 V to 5.5 V supply voltage, 22 digital I/O lines, and a high-performance RISC CPU core supporting 14-bit instruction words. What is a PIC16C microcontroller? The PIC16C family is Microchip's classic OTP-programmed mid-range 8-bit microcontroller line built around a Harvard-architecture RISC CPU. The hierarchy is: 8-bit MCU -> PIC16C family -> mid-range core -> embedded control. These devices use a separate program and data bus, an accumulator-based ALU, and a small instruction set (35 single-word instructions), making them deterministic and easy to program in assembly or C. OTP ROM versions like the PIC16C63 are intended for low- to medium-volume production where firmware is stable and field re-programmability is not required, distinguishing them from Flash-based PIC16F parts. Key features include 35 single-word instructions, single-cycle execution for most instructions (program branches take two cycles), an industrial operating temperature range of -40C to +85C (the "I" suffix), an internal RC oscillator option, an analog comparator module, a USART module for asynchronous serial communication, and a synchronous serial port (SSP). The OTP memory is windowless in plastic SOIC packaging; the CDIP windowed variant allows UV erasure for engineering development. The device also integrates a watchdog timer with its own on-chip RC oscillator, three hardware timers (Timer0, Timer1, Timer2), and capture/compare/PWM (CCP) peripherals. Typical applications include industrial control logic, appliance controllers, motor drive interfacing, sensor signal conditioning, and legacy embedded systems requiring OTP-programmed devices. The wide SOIC package and industrial temperature grade make it suitable for factory-floor equipment and instrumentation where reliability under thermal stress is required. When designing with the PIC16C63-20I/SO, note that the device is in production but is being phased out for many designs in favor of Flash PIC16F73 or PIC16F877A drop-in equivalents. The OTP memory means firmware bugs cannot be patched without re-issuing silicon; budget engineering time accordingly. This page synthesizes distributor pricing, drop-in Flash and OTP alternatives from the same PIC16C6X family, and practical engineering notes not found in the manufacturer datasheet alone.

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PIC16C63A-04/SO

PIC16C63A-04/SO - 8-Bit 4MHz OTP MCU, 7KB, 28-SOIC | Microchip

The Microchip Technology PIC16C63A-04/SO is an 8-bit CMOS microcontroller based on the PIC16C family RISC architecture, operating at 4 MHz with 200 ns instruction execution time and packaged in a 28-pin SOIC. It integrates 7 KB (4K x 14) of one-time-programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O pins, making it a mid-range member of the PIC16C6x family designed for embedded control applications requiring deterministic, low-latency firmware execution. What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a single-chip computer that executes instructions on 8-bit-wide data and is the workhorse of low-cost embedded systems. OTP (One-Time-Programmable) memory can be written exactly once and cannot be erased, which makes these parts well-suited to high-volume production where code changes are infrequent. Within the broader taxonomy, the PIC16C63A belongs to: microcontroller -> 8-bit MCU -> PIC16 family -> PIC16C6x sub-family -> CMOS RISC architecture -> semiconductor IC. This hierarchy governs tool selection, peripheral compatibility, and migration paths. Key features of the PIC16C63A-04/SO include a 35-instruction RISC instruction set where only program branches take two cycles, four 8-bit digital I/O ports (PORTA, PORTB, PORTC, plus shared lines), an enhanced USART with baud-rate generator for serial communications, a capture/compare/PWM (CCP) module, a 10-bit analog-to-digital converter, and two 8-bit timers plus one 16-bit timer. Supply voltage spans 4.0 V to 5.5 V and the device draws low operating current, with a power-saving SLEEP mode that halts the oscillator and peripherals. Architecturally, the PIC16C63A uses a Harvard architecture with separate program and data buses, enabling instruction fetch and operand access in a single cycle. The CMOS process delivers low power consumption and high noise immunity. The 28-SOIC package is a wide-body surface-mount format suitable for hand-solderable prototypes and automated assembly lines. Typical applications include industrial control, automotive body electronics, consumer appliances, security and alarm systems, motor control, and instrumentation front-ends. The integrated USART, CCP and 10-bit ADC reduce external component count in many designs. Design considerations: place a 100 nF decoupling capacitor close to VDD and ensure the MCLR pin is pulled high through a resistor for normal operation. OTP memory programming requires the ICSP interface and a programmer such as the MPLAB PM3. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.

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PIC16C63A-04/SP

PIC16C63A-04/SP - 8-Bit 4MHz OTP MCU 7KB Flash 28-SPDIP | Microchip

The Microchip Technology PIC16C63A-04/SP is an 8-bit CMOS microcontroller in the PIC16CXX mid-range family, featuring 4 MHz maximum clock speed, 7 KB (4K x 14) of One-Time-Programmable (OTP) program memory, and 192 bytes of RAM, packaged in a 28-pin SPDIP through-hole form factor. The -04 speed suffix designates a 4 MHz oscillator variant designed for commercial 4.0V to 5.5V supply operation and 200 ns instruction cycle execution. According to manufacturer documentation, the PIC16C63A/65B/73B/74B family employs an advanced RISC architecture with 35 single-word instructions, of which all but program branches execute in a single instruction cycle. An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes application firmware stored in non-volatile memory and interfaces with the outside world through digital and analog peripherals. Within the semiconductor taxonomy, the PIC16C63A belongs to the hierarchy: microcontroller -> 8-bit MCU -> RISC MCU -> mid-range MCU -> embedded controller. PIC microcontrollers were among the first commercial RISC MCUs and remain popular for cost-optimised applications thanks to OTP and EPROM variants that ship without factory firmware, allowing the end customer to program code once. Key features of the PIC16C63A-04/SP include 22 digital I/O pins, integrated capture/compare/PWM (CCP) peripherals, a USART serial port for asynchronous and synchronous communications, an SSP module supporting SPI and I2C, and two 8-bit timers plus one 16-bit timer. The device draws only a few milliamps in active mode and offers a power-saving Sleep mode that freezes the CPU clock while allowing interrupts to wake the part. The architecture uses a Harvard bus with separate program and data paths, allowing instruction fetch and operand read to occur in the same cycle. The OTP program memory is implemented in EPROM cells that are erased by exposing the die (windowed packages) or one-time-programmed in windowless plastic packages like this SPDIP. The instruction set is fixed at 35 opcodes, each 14 bits wide, which keeps the assembler surface small for hand-coded firmware. Typical applications for the PIC16C63A-04/SP include industrial control boards, motor drive signal conditioning, automotive body electronics, low-end consumer appliances, sensor interfaces with USART or SPI reporting, and educational development platforms where the OTP part allows students to program and discard many devices cheaply. The wide 4.0V to 5.5V supply range also supports legacy 5V logic rails common in factory automation. When designing with this device, ensure your programmer supports OTP parts (the MPLAB PM3 and ICD programmers support the PIC16C63A family) and that the ICSP interface is routed to a header for in-circuit programming. Note that OTP parts can only be programmed once, so for development prefer the PIC16F63 flash equivalent. This page consolidates distributor pricing, drop-in alternatives, and design guidance not present in the manufacturer datasheet.

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PIC16C63A-04E/SP

PIC16C63A-04E/SP - 8-Bit 4MHz OTP MCU, 7KB Flash, 28-SPDIP

The Microchip Technology PIC16C63A-04E/SP is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family, featuring 7KB of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and a maximum clock speed of 4 MHz, housed in a 28-pin Skinny Plastic DIP (SPDIP) package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals on one die; the PIC mid-range core uses a Harvard RISC architecture with 35 single-word instructions, only one of which (program branch) takes two cycles, while the rest execute in a single instruction cycle. This design simplifies coding while delivering deterministic interrupt latency that is critical for real-time embedded control. Key features of the PIC16C63A-04E/SP include 22 digital I/O pins, three serial communication peripherals (I2C, SPI, and UART/USART), Capture/Compare/PWM (CCP) modules for motor and lighting control, an 8-bit ADC, and Brown-out Detect/Reset plus Power-On Reset (POR) for robust supply supervision. The 'E' suffix designates the Extended industrial temperature range of -40C to +125C, while '04' denotes a 4 MHz maximum oscillator frequency. Architecturally, the PIC16C63A uses a 14-bit instruction word with separate code and data buses, allowing simultaneous instruction fetch and data access. Its CMOS static design means the clock can be stopped and the device put into Sleep mode for ultra-low standby power, making it well-suited for battery-backed or energy-conscious industrial applications. Typical applications include industrial control logic, sensor interface boards, motor control subsystems, automotive body electronics (non-safety), and legacy embedded systems requiring long-term parts continuity. The OTP memory and SPDIP package also make this part attractive for through-hole prototyping and low-volume production runs. When designing with the PIC16C63A-04E/SP, ensure the oscillator circuit uses the correct crystal or resonator values for the chosen clock frequency (4 MHz max), and always place decoupling capacitors within 5 mm of the VDD pins. Because this part is OTP, firmware must be fully validated before programming; for in-system reprogrammability, consider the Flash-based PIC16F73/74 equivalents. This page consolidates distributor pricing, same-family and cross-brand drop-in alternatives, pin-level comparison, and engineering design notes that go beyond what the manufacturer datasheet alone provides.

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PIC16C63A-04E/SS

PIC16C63A-04E/SS - 8-Bit 4MHz CMOS MCU, 7KB OTP, 28-SSOP

The Microchip Technology PIC16C63A-04E/SS is an 8-bit CMOS OTP (One-Time-Programmable) microcontroller from the PIC16CXX mid-range family, operating at a clock speed of 4 MHz and housed in a 28-pin SSOP (Shrink Small Outline Package). It integrates 7KB of program memory, 192 bytes of RAM, and a rich set of peripherals including two 8-bit timers, one 16-bit timer, a USART, MSSP (Master Synchronous Serial Port) supporting both SPI and I2C, and a capture/compare/PWM module. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, memory (program + data), and I/O peripherals, designed for embedded control tasks where deterministic, low-cost processing is required. The PIC16CXX family belongs to Microchip's mid-range architecture, which occupies the middle of the PIC performance hierarchy (below PIC18 enhanced, above PIC10/12/16 base-line) and is known for its compact, RISC-style instruction set of 35 single-word instructions, most executing in one instruction cycle. This architecture delivers high code density and predictable interrupt latency, making it a workhorse of industrial, automotive, and consumer embedded designs since the 1990s. Key features include: wide operating voltage range from 2.5V to 6.0V, 22 digital I/O pins with individual direction control, programmable code protection, power-on reset (POR), brown-out detection, power-saving SLEEP mode, and an in-circuit serial programming (ICSP) interface. The PIC16C63A's CMOS/EPROM-based design supports low-power consumption (15 µA typical at 5V/4 MHz, 1 µA typical at 3V/32 kHz) and a fully static operation that allows clock-down to DC. The Extended (E) temperature range of -40°C to +125°C makes this part suitable for harsh-environment and automotive-grade applications. Internally, the device uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand access in a single cycle. The 14-bit-wide program memory word improves code efficiency compared to traditional 8-bit CISC architectures. The integrated MSSP peripheral supports both SPI (Master/Slave) and I2C (Master/Slave) protocols, eliminating external interface ICs in many designs. The USART provides asynchronous (RS-232/RS-485) and synchronous serial communication, enabling connectivity to sensors, displays, and host processors. Typical applications include industrial control systems, HVAC equipment, automotive body electronics, smart sensors, motor control, and consumer appliance controllers. The 7KB OTP memory is well-suited for cost-sensitive production volumes where firmware is finalized and in-circuit reprogramming is not required in the field. When designing with the PIC16C63A-04E/SS, observe that the OTP variant cannot be re-programmed; for development, use a JW (windowed) package or a Flash-based equivalent such as PIC16F877A. The part requires a stable oscillator source (crystal, resonator, or RC network) and proper decoupling. The 4 MHz maximum clock (denoted by -04 in the part number) targets low-power designs rather than high-speed data processing. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes that complement the official Microchip datasheet for engineers considering the PIC16C63A-04E/SS for new designs or legacy maintenance.

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PIC16C63A-04I/SP

PIC16C63A-04I/SP - 8-Bit OTP MCU, 4MHz, 7KB | Microchip

The Microchip Technology PIC16C63A-04I/SP is an 8-bit CMOS OTP microcontroller in the PIC16CXX mid-range family, delivering 4 MHz CPU performance with 7 KB (4K x 14) of one-time-programmable program memory and 192 bytes of RAM, housed in a 28-pin SPDIP (SP) package. Operating from 2.0 V to 6.0 V across commercial, industrial, and extended temperature ranges, the device consumes only 15 µA typical at 5 V / 4 MHz and as little as 1 µA at 3 V / 32 kHz, making it well suited to power-constrained embedded designs. According to the Microchip datasheet, the PIC16C63A employs an advanced RISC architecture with only 35 single-word instructions, all single-cycle except program branches which take two cycles. The part offers 22 digital I/O pins, three timers (Timer0, Timer1, Timer2), a capture/compare/PWM module, a USART for asynchronous/synchronous serial communication, a synchronous serial port (SSP) supporting SPI and I²C, and an 8-bit ADC with 5 input channels. The 28-SPDIP (SP) package provides robust through-hole mounting for industrial controls, instrumentation, and legacy equipment designs. Typical applications include motor control, sensor interfacing, low-power remote controls, embedded user interfaces, and industrial automation where the wide voltage range and low quiescent current are valued. For new designs, engineers should weigh the OTP nature of this part carefully: PIC16C63A is one-time-programmable and cannot be firmware-updated, so it is best reserved for mature production designs rather than iterative prototyping. Compared to flash-based PIC16F counterparts, the PIC16C63A offers slightly better ESD robustness and radiation tolerance but loses field re-programmability.

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PIC16C63A-04I/SS

PIC16C63A-04I/SS - 8-Bit 4MHz 7KB OTP MCU, SSOP-28 | Microchip

The Microchip Technology PIC16C63A-04I/SS is an 8-bit CMOS RISC microcontroller in the PIC16CXX mid-range family, delivering 4 MHz CPU performance with 7 KB (4K x 14) of one-time-programmable (OTP) EPROM program memory in a 28-pin SSOP (5.30 mm body) surface-mount package. The '04' speed suffix designates a 4 MHz oscillator-grade device, and the 'I' industrial-temperature suffix guarantees operation from -40 °C to +85 °C, with a 4.0 V to 5.5 V supply range per the verified PIC16C63A datasheet. An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, program memory, data RAM, peripherals, and I/O on one die. Within the broader taxonomy it sits under microcontroller -> embedded processor -> semiconductor device. The PIC16C family uses an advanced RISC architecture that exposes 35 single-word instructions, with all instructions completing in one cycle except program branches (two cycles) - this gives the PIC16C63A deterministic execution timing and excellent code density for embedded control tasks. Program memory is implemented in EPROM (erasable PROM, OTP) while data memory uses static RAM. Key features include 192 bytes of data RAM, 22 digital I/O pins, three 8-bit timer/counters, a USART for asynchronous/synchronous serial communication, an SSP module for SPI/I2C, a 5-channel 8-bit ADC, and a programmable watchdog timer with on-chip RC. The PIC16C63A also integrates power-on reset, brown-out reset, and a wide operating voltage range up to 6.0 V, plus low-power consumption (15 µA typical at 5 V / 4 MHz and 1 µA typical at 3 V / 32 kHz) per the PIC16C63A/65B/73B/74B datasheet. Typical applications include industrial control panels, motor control front-ends, smart sensor interfaces, white-goods and appliance controllers, automotive body electronics subsystems, and embedded serial-communication master/slave nodes. The combination of OTP memory, USART, ADC, and 22 I/O makes it a versatile general-purpose MCU for cost-sensitive designs. When designing with the PIC16C63A-04I/SS, ensure the OTP windowless package is acceptable for production volumes (OTP means one-time-only programming - no field firmware updates). Provide a stable decoupling network (0.1 µF + 10 µF) near VDD/VDD2 pins, and respect MCLR/Vpp timing during in-circuit programming via ICSP. Use the PICmicro mid-range reference manual and MPLAB PM3 programmer for development.

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PIC16C63A-20/SO

PIC16C63A-20/SO - 8-Bit 20MHz OTP MCU, 7KB, 28-SOIC | Microchip

The Microchip Technology PIC16C63A-20/SO is an 8-bit CMOS RISC microcontroller from the PIC16CXX mid-range family, delivering 20 MHz (200 ns instruction cycle) performance with 7KB (4K x 14) of One-Time-Programmable (OTP) program memory and 192 bytes of RAM in a 28-pin SOIC (SO) wide-body package. The device integrates 22 digital I/O pins, three timer modules, a USART with addressable SPI/I2C, and operates across the commercial 0 °C to +70 °C temperature range on a 2.5 V to 6.0 V supply. An OTP microcontroller (One-Time-Programmable MCU) is a non-volatile programmable logic device whose program memory can be written exactly once after manufacture using a device programmer; once programmed, the code is permanent. PIC microcontrollers sit within the broader category hierarchy: 8-bit microcontroller -> RISC microcontroller -> microcontroller unit (MCU) -> embedded processing -> semiconductor. The PIC16C63A specifically belongs to Microchip's mid-range PIC16 family using a 14-bit instruction word and 35 single-word instructions, balancing code density with deterministic execution for real-time control tasks. Key features include Harvard architecture with separate program and data buses, interrupt handling with hardware context saving, power-saving SLEEP mode, in-circuit serial programming (ICSP) capability, and a wide operating voltage range suitable for both 3.3 V and 5 V systems. The 28-SOIC package (7.50 mm / 0.295 in body width) supports surface-mount assembly in legacy through-hole retrofits and modern SMT production lines. The PIC16C63A uses Microchip's enhanced mid-range core with a two-stage instruction pipeline, two 8-bit and one 16-bit timer, a capture/compare/PWM module, a synchronous serial port configurable as SPI or I2C, and a USART for asynchronous serial communication. Watchdog timer with on-chip RC oscillator provides system recovery without external components. Typical applications include industrial control panels, appliance controllers, automotive body electronics (pre-CAN era), sensor interfaces, and consumer product embedded logic. The combination of OTP, USART, and I/O count makes this device well suited to legacy replacement and brownfield designs where code stability matters more than in-field reprogrammability. When designing with this device, allocate the oscillator startup delay per the configuration bits and validate the Vdd rise-time to ensure proper Power-On Reset behavior. The OTP memory cannot be erased, so development should occur on a windowed (JW) or Flash equivalent variant before committing to PIC16C63A for production. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, helping engineers source a viable replacement or pin-compatible equivalent for the PIC16C63A-20/SO which Microchip classifies as Not Recommended for new designs.

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PIC16C63A-20/SP

PIC16C63A-20/SP - 8-bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C63A-20/SP is an 8-bit CMOS microcontroller built on the PIC16C family RISC architecture, offering 20 MHz maximum operation, 7 KB (4K x 14) of OTP program memory, and 192 bytes of RAM, all housed in a 28-pin SPDIP package. The device executes instructions in 200 ns cycles using only 35 single-word instructions, supporting 22 digital I/O pins and 5 channels of 8-bit A/D conversion for embedded sensing tasks. An OTP (One-Time Programmable) microcontroller is a non-volatile memory class where the program memory is written once by the user via a device programmer (such as the MPLAB PM3) and cannot be erased or rewritten. OTP sits in the broader taxonomy as a subtype of ROM-based program memory, with siblings EPROM (erasable via UV), EEPROM (electrically byte-erasable), and Flash (electrically block-erasable). Within the PIC16 family hierarchy, the PIC16C63A belongs to the mid-range PIC16 line, which evolved into the PIC16F flash-based successors such as the PIC16F73 and PIC16F73A that share the same 28-pin footprint and peripherals. Key features of the PIC16C63A-20/SP include a 200 ns instruction cycle, three timer modules (Timer0, Timer1, Timer2), two Capture/Compare/PWM (CCP) modules, a Synchronous Serial Port (SSP) configurable for SPI or I2C, an addressable USART for asynchronous serial communication, and a 5-channel 8-bit analog-to-digital converter. The device operates from 4.0 V to 6.0 V supply and is specified over 0 C to +70 C commercial temperature range, with the 20 MHz speed suffix indicating the maximum oscillator frequency. Typical applications for the PIC16C63A-20/SP include industrial control modules, sensor interface boards, low-cost motor control subsystems, and embedded communication bridges that require a deterministic 8-bit controller with hardware USART and SSP. The 22 I/O pins provide ample headroom for keypad, LED, and parallel LCD interfaces, while the integrated ADC removes the need for external analog conversion in measurement nodes. When designing with this part, engineers should note that OTP memory requires device programmers (MPLAB PM3, PICSTART Plus) and cannot be field-upgraded. The 28-SPDIP package is through-hole and supports legacy designs, but for new designs, the Flash-based PIC16F73 or PIC16F73A in the same 28-pin SPDIP is recommended for development flexibility.

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PIC16C63A-20/SS

PIC16C63A-20/SS - 8-Bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C63A-20/SS is an 8-bit CMOS mid-range microcontroller built on the PIC16CXX RISC architecture, featuring a 20 MHz clock speed, 7 KB (4K x 14) of one-time programmable (OTP) program memory, and 192 bytes of RAM, all packaged in a 28-pin SSOP (SS) form factor. The device delivers 200 ns instruction execution and is engineered for embedded control tasks that demand deterministic response with minimal firmware complexity. It exposes 22 digital I/O lines and supports both parallel and serial peripheral interfaces for flexible system integration. A mid-range PIC microcontroller is a class of 8-bit RISC processor that balances code density, peripheral integration, and cost, sitting between baseline PIC10/12/16 devices and the higher-performance PIC18 family. These MCUs use a 14-bit instruction word and Harvard bus topology, allowing simultaneous instruction fetch and data access. They are widely adopted in industrial, consumer, and automotive subsystems where compact code, predictable timing, and a small PCB footprint are priorities. Key features include a wide operating voltage range from 2.5 V to 6.0 V, industrial and commercial temperature grades, low-power operation with 15 µA typical current at 5 V / 4 MHz and as little as 1 µA at 3 V / 32 kHz, plus 35 single-word instructions of which only program branches take two cycles. The PIC16C63A integrates dual analog comparators, a USART, and a synchronous serial port (SSP) supporting SPI and I2C master/slave modes, enabling direct connectivity to sensors, EEPROMs, displays, and other microcontrollers without external glue logic. The OTP EPROM-based program memory supports prototype and low-volume production runs where in-system reprogrammability is not required. Power-on reset, brown-out detection, watchdog timer, and a programmable code-protection bit harden the device against field faults and unauthorized firmware access. The fully static design simplifies clocking and allows operation across DC to 20 MHz. Typical applications include industrial control panels, motor drive front-ends, sensor conditioning interfaces, low-cost consumer appliances, and instrumentation front-ends. Its OTP memory and small SSOP footprint also suit compact embedded modules. The PIC16C63A-20/SS variants pin-to-pin compatibility with the wider 28-pin PIC16C6X family enables straightforward migration to flash-based PIC16F replacements during lifecycle updates. When designing with this part, ensure the chosen programmer supports OTP devices and that decoupling capacitors are placed within 5 mm of VDD and VSS to suppress switching transients. Note that OTP parts cannot be reprogrammed in-circuit, so engineering samples should be allocated for code bring-up before committing to production volumes.

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PIC16C63A-20E/SO

PIC16C63A-20E/SO - 8-bit 20MHz OTP MCU, 7KB ROM, SOIC-28 | Microchip

The Microchip PIC16C63A-20E/SO is an 8-bit CMOS microcontroller from the PIC16 family, featuring 7KB of one-time-programmable (OTP) program memory organized as 4K x 14, 192 bytes of RAM, and 22 I/O pins. It operates at 20MHz with a 200ns instruction cycle, packaged in a 28-pin SOIC (SO) wide-body form factor. The "-20" suffix indicates the 20MHz speed grade, while "E" denotes the extended industrial temperature range of -40°C to +125°C. An 8-bit PIC microcontroller is a RISC-based CMOS MCU that uses a Harvard architecture with separate program and data buses. The PIC16C series belongs to the mid-range PIC family, offering 35 single-word instructions, hardware multiply, and interrupt-driven peripherals. PIC microcontrollers sit within the broader category of microcontrollers (MCU) -> embedded controllers -> semiconductors, and dominate cost-sensitive embedded applications due to their deterministic instruction timing, low power consumption, and mature toolchain ecosystem centered on MPLAB X IDE. Key features include 128 bytes of EEPROM data memory, dual capture/compare/PWM (CCP) modules, an asynchronous serial port (USART/SCI), a synchronous serial port (SSP) supporting SPI and I²C, an 8-channel 8-bit ADC, two 8-bit timers (TMR0/TMR2) and one 16-bit timer (TMR1), and a watchdog timer with its own on-chip RC oscillator. The device supports in-circuit serial programming (ICSP) via two pins, enabling field updates without removing the chip from the board. Architecturally, the PIC16C63A uses a 14-bit instruction word with a 2-stage pipeline, allowing most instructions to execute in a single 200ns cycle at 20MHz. Its Harvard bus structure enables simultaneous instruction fetch and data access, improving throughput compared to von Neumann MCUs at the same clock rate. The 8-bit ADC uses successive approximation and shares pins with digital I/O, offering 8 channels of analog input. The CCP modules support PWM output, capture for frequency measurement, and compare for timed event generation. Typical applications include industrial control systems, motor control interfaces, smart sensor hubs, automotive body electronics, appliance control boards, and consumer product embedded controllers. The wide SOIC-28 footprint also makes it suitable for hand-soldered prototypes and breadboard-friendly designs. When designing with this part, note that OTP variants cannot be erased and re-programmed - they are intended for production runs where firmware is final. Use the PIC16F63A flash equivalent during development. The "E" temperature grade supports -40°C to +125°C operation, making the part suitable for outdoor, automotive, and industrial environments. This page synthesizes distributor pricing, drop-in PIC16C63A-20 family alternatives, and practical design notes not found in the manufacturer datasheet alone. The PIC16C63A is marked Not Recommended for New Designs by Microchip, so consult the PIC16F877A or PIC18F equivalents for new product development.

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PIC16C63A-20E/SS

PIC16C63A-20E/SS - 8-Bit 20MHz 7KB OTP MCU | Microchip

The Microchip Technology PIC16C63A-20E/SS is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family with 7KB (4K x 14) of one-time-programmable (OTP) program memory and 192 bytes of RAM. It executes instructions at a 20 MHz clock rate, offers 22 digital I/O pins, and operates from a 4.0 V to 5.5 V supply in a 28-pin SSOP (5.30 mm body width) package. Key features include a high-performance RISC CPU with only 35 single-word instructions, single-cycle instruction execution except for program branches (two cycles), and a fully static design supporting low-power operation. The device integrates a 10-bit ADC module, USART, MSSP (SPI/I2C), two 8-bit timers plus one 16-bit timer, and a watchdog timer with on-chip oscillator. Typical low-power figures from the family datasheet are 15 uA typical at 5 V / 4 MHz and 1 uA typical at 3 V / 32 kHz. The PIC16C63A family supports commercial, industrial, and extended temperature ranges, and it is qualified for 100K erase/write-cycle OTP endurance. Typical applications include industrial control, sensor signal conditioning, motor control front-ends, low-power embedded controllers, and communication bridges using USART or MSSP. The wide operating voltage range and 22 I/O pins accommodate mixed designs by connecting digital I/O, a UART, and an SPI or I2C peripheral on the same MCU. When designing with this device, ensure that the program memory is supplied at memory within the 28-SSOP footprint, decoupling capacitors are placed close to VDD/VSS pins, and the MCLR pin has the correct pull-up network. For production programming, use a Microchip programmer such as MPLAB PM3 to write the OTP array once. This page synthesizes distributor pricing, drop-in alternatives from Microchip and Atmel PIC/AVR families, and practical design notes not collected in the manufacturer datasheet.

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PIC16C63A-20I/ML

PIC16C63A-20I/ML - 8-Bit 20MHz 7KB OTP MCU 28-VQFN | Microchip

The Microchip Technology PIC16C63A-20I/ML is an 8-bit CMOS RISC microcontroller from the PIC16CXX mid-range family, delivering 7KB (4K x 14) of one-time-programmable (OTP) program memory, 192x 8 bytes of RAM, and 22 digital I/O pins in a 28-pin VQFN exposed-pad (ML) package operating at up to 20 MHz clock speed. A PIC microcontroller (MCU) is a compact programmable processor that integrates CPU core, non-volatile program memory, working RAM, and peripherals on a single die. PIC16C-series MCUs sit in Microchip's mid-range taxonomy (base PIC -> PIC16C mid-range -> PIC16C6x/7x family -> PIC16C63A), targeting cost-sensitive embedded control with 35 single-word instructions, single-cycle execution except program branches, and DC to 20 MHz operating speed (200 ns instruction cycle). They belong to the broader class of 8-bit microcontrollers and, more generally, embedded microcontrollers within power management and digital control systems. Key features of the PIC16C63A include three timer modules (Timer0 8-bit with 8-bit prescaler, Timer1 16-bit with prescaler that can increment during SLEEP via external crystal/clock, and Timer2 8-bit), an analog comparator module, a synchronous/asynchronous serial port (USART/SCI), and a parallel slave port on selected variants. The device operates over the industrial temperature range (-40C to +85C) denoted by the 'I' suffix, supports an external oscillator source, and includes power-managed SLEEP mode for low-power designs. The architecture uses Harvard-style separate program/data buses, a 14-bit wide instruction word, and an 8-bit data path, allowing deterministic single-cycle instruction execution. This RISC design delivers high throughput per MHz while keeping the instruction set compact enough for assembly or C programming under MPLAB IDE and MPLAB XC8. Code compatibility within the 28-pin PIC16CXX pin family enables drop-in migration across the PIC16C62/65/73/74 sub-families. Typical applications for the PIC16C63A-20I/ML include industrial control interfaces, sensor signal conditioning front-ends, low-to-medium-speed serial communication bridges (USART), keypad and LED scanning, and general-purpose embedded controllers where OTP programmability and proven PIC16C toolchain support outweigh flash reprogramming convenience. The 28-VQFN exposed-pad package suits space-constrained boards requiring modest thermal dissipation. When designing with the PIC16C63A, remember that OTP memory cannot be re-programmed in-circuit, so use a JW (windowed) variant or PIC16F-series equivalent during development and qualification. Ensure the exposed pad is soldered to a sufficient copper area for the package's heat-sinking objective. This page synthesizes distributor availability, drop-in pin-compatible alternatives from the 28-pin PIC16CXX family, and practical design notes not aggregated in a single source by the manufacturer datasheet.

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PIC16C63A-20I/SO

PIC16C63A-20I/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C63A-20I/SO is an 8-bit CMOS OTP (One-Time-Programmable) microcontroller from the PIC® 16C family, integrating 7KB of program memory (4K x 14 words), 192 bytes of RAM, and 22 digital I/O lines in a 28-pin SOIC package. It operates from 4.0V to 5.5V with a maximum clock rate of 20 MHz, delivering 200 ns instruction execution through the PIC RISC architecture and a fixed 35-instruction set. The industrial temperature grade spans -40°C to +85°C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile data memory, and configurable peripheral I/O on one die. PIC microcontrollers sit in the 8-bit RISC MCU category within the broader hierarchy of microcontroller -> embedded processor -> semiconductor device. The PIC16C6x family specifically targets cost-sensitive, deterministic embedded control applications, blending Harvard architecture, OTP program memory, and low-power CMOS design with extensive peripheral integration. Key features include five 8-bit I/O ports (PORTA-PORTE), a USART for serial communication, an MSSP module supporting SPI and I²C, two 8-bit timers plus one 16-bit timer with capture/compare/PWM, a 10-bit multi-channel analog-to-digital converter, and an 8-bit parallel slave port. The wide operating voltage (to 6.0V) and three temperature grades (commercial, industrial, extended) support deployment across consumer, industrial, and automotive under-hood environments. Internally, the PIC16C63A uses a 14-bit instruction word with a single-cycle fetch (200 ns at 20 MHz) and a two-cycle pipeline for program branches. An 8-level deep hardware stack, watchdog timer with its own on-chip RC oscillator, and brown-out reset circuitry add fault resilience. Power-saving SLEEP mode draws microamp-level current while retaining RAM, enabling battery-backed applications. Typical applications include appliance control, automotive subsystems, industrial sensors and actuators, remote keyless entry, and smart-card readers. Pin-compatibility across the PIC16C63/63A/65B/73B/74B family lets designers scale code size and peripheral mix without PCB rework. When designing with this OTP MCU, plan code and programming flow early; OTP parts cannot be re-flashed and require windowed ceramic variants (e.g., JW package) for prototype iteration. Verify supply chain continuity, as PIC16C OTP devices are mature parts with Microchip's "Not Recommended for new designs" (NRND) status - existing designs are supported, but new product introductions should evaluate the flash-based PIC16F7x successor family.

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PIC16C63A-20I/SP

PIC16C63A-20I/SP - 8-Bit 20MHz OTP MCU 7KB Flash | Microchip

The Microchip Technology PIC16C63A-20I/SP is an 8-bit CMOS microcontroller built on EPROM/OTP technology, operating at up to 20 MHz with 7 KB (4K x 14) of program memory and 192 bytes of RAM, housed in a 28-pin SPDIP (SP) through-hole package. It delivers 22 digital I/O pins, a 20 MHz clock speed, and operates from 2.5 V to 6.0 V supply, targeting cost-sensitive embedded control applications that require one-time-programmable code storage. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals onto one die. PIC microcontrollers use a RISC Harvard architecture with 35 single-word instructions and a 200 ns instruction execution time, executing most instructions in one instruction cycle except for program branches which take two. This instruction set and architecture make PIC MCUs well-suited for deterministic real-time control in industrial, consumer, and automotive subsystems. Key features of the PIC16C63A include 7 KB OTP program memory, 192 bytes of RAM, 22 I/O pins, three timers (Timer0, Timer1, Timer2), a USART module for serial communication, and a Capture/Compare/PWM (CCP) module. The -20I industrial temperature range covers -40°C to +85°C, and the device includes power-on reset, brown-out detection, watchdog timer with on-chip RC oscillator, and an in-circuit serial programming (ICSP) interface. Low-power consumption is rated at 15 µA typical at 5 V / 4 MHz and 1 µA typical at 3 V / 32 kHz, supporting battery-backed applications. The PIC16C63A uses CMOS EPROM cell technology for non-volatile program storage, requiring a quartz-windowed package variant (e.g., PIC16C63A/JW) for UV erasure and re-programming during prototyping. The /SP SPDIP-28 footprint is pin-compatible with PIC16C62B, PIC16C63, and PIC16C73A in the same family, simplifying PCB reuse across legacy PIC designs. Designers should note that OTP parts cannot be reprogrammed; pre-programmed parts are typically ordered for production while windowed samples are used for code development. Typical applications include industrial control loops, sensor interface boards, low-speed serial communication bridges (RS-232/RS-485), motor control signal conditioning, and legacy embedded designs that originated on the PIC16C family. Designers migrating from PIC16C63A to a flash-based alternative (PIC16F73 or PIC16F873A) gain in-system reprogrammability at the cost of OTP write-once security. When designing with this part, ensure decoupling capacitors (0.1 µF ceramic) are placed within 5 mm of VDD/VDD2 and VSS pins, and that MCLR is properly pulled up to VDD through a 10 kΩ resistor to avoid spurious resets. The ICSP interface uses RB6 (clock) and RB7 (data); reserve these pins for programming access or use them only when ICSP is not required. This page synthesizes distributor pricing, drop-in PIC16C family alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16C63A-20I/SS

PIC16C63A-20I/SS - 8-Bit 7KB MCU 20MHz OTP 28-SSOP | Microchip

The Microchip PIC16C63A-20I/SS is an 8-bit CMOS one-time-programmable (OTP) microcontroller from the PIC16CXX mid-range family, delivering 20 MHz clock input and 7 KB (4K x 14 words) of program memory in a 28-pin SSOP package. The device is built on Microchip's RISC architecture with 35 single-word instructions, providing 200 ns instruction cycle execution and DC to 20 MHz operating speed. Industrial temperature grade (-40C to +85C), 22 I/O pins, 192 bytes of data RAM, and 4.0 V to 5.5 V supply voltage complete the headline specifications. An 8-bit OTP microcontroller is a single-chip computer built around an 8-bit data path and non-volatile one-time-programmable program memory; the OTP memory window is pre-programmed during manufacture and cannot be erased by UV or electrically, which suits low-volume, cost-sensitive, or field-deployed applications where firmware is finalized before deployment. The PIC16C63A sits within the broader hierarchy: 8-bit microcontroller -> microcontroller unit (MCU) -> embedded controller -> semiconductor. Its mid-range RISC core reduces code size and execution time relative to legacy CISC architectures while keeping the instruction set small enough for hand-assembled firmware. Key features include a Harvard architecture with separate program and data buses, eight hardware interrupt sources, two 8-bit timer/counters plus one 16-bit timer/counter, a 10-bit multi-channel analog-to-digital converter (ADC) with up to 5 input channels, USART/SCI communications, and I2C/SPI peripherals for synchronous serial. On-chip watchdog timer, brown-out reset, power-on reset, and a 5-bit PORTA digital I/O port provide robust embedded control without auxiliary components. The 28-SSOP industrial package offers a compact 5.30 mm body width, gulled-wing surface-mount terminations, and the standard SSOP pinout used across the PIC16C6x family for layout reuse. Typical applications include industrial control and sensor conditioning, motor drive signal conditioning, appliance controllers, automotive body electronics sub-modules, smart sensor interfaces, and embedded communications bridges that require a simple, deterministic 8-bit controller rather than a 32-bit application processor. The OTP memory suits high-volume consumer and industrial systems where firmware is locked at production and field reprogramming is not required; flash-based PIC16F equivalents are available when in-application reprogrammability is needed. Design consideration: at 20 MHz the instruction cycle is 200 ns; branches take two cycles. Provide a clean 5 V rail with decoupling capacitors near VDD/VSS pins and verify the oscillator start-up time at cold temperature to ensure reliable reset. Industrial temperature grade parts rated -40C to +85C suit most indoor and sheltered outdoor deployments. This page synthesizes distributor pricing, drop-in alternatives within the PIC16C family, and practical design notes that go beyond the standard Microchip datasheet contents.

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PIC16C63A/JW

PIC16C63A/JW - 8-Bit 20MHz 7KB EPROM MCU, 28-CDIP | Microchip

The Microchip Technology PIC16C63A/JW is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family, featuring a 20 MHz maximum clock speed and 7 KB (4K x 14) of UV-erasable EPROM program memory, housed in a 28-pin windowed ceramic DIP (CDIP-28) package. The /JW suffix specifically identifies the windowed, UV-erasable ceramic DIP variant used for development and prototyping, as opposed to the OTP plastic variants. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC16CXX family employs a RISC (Reduced Instruction Set Computer) architecture that uses only 35 single-word instructions, making assembly programming unusually simple for an 8-bit core. Within the broader taxonomy, PIC16C63A is a mid-range PIC microcontroller, itself a sub-family of the PIC microcontrollers (8-bit), which sit within the larger class of embedded microcontrollers and ultimately the semiconductor power management and embedded processing hierarchies used across nearly every electronic product category. Key differentiating features include fully-static operation (clock can be stopped to save energy), 192 bytes of data RAM, 22 digital I/O lines, a hardware USART for asynchronous serial links, an MSSP module (SPI / I2C), and a 20 MHz clock input that delivers 200 ns instruction execution. The PIC16C63A runs from a 2.5 V to 6.0 V supply and consumes only about 15 uA typical at 5 V, 4 MHz and 1 uA typical at 3 V, 32 kHz, making it well suited to low-power embedded designs. Typical applications include industrial control systems, instrumentation front panels, sensor interfaces, motor-control co-processors, low-cost consumer appliances, and educational/development platforms where UV-erasable windowed parts remain preferred for iterative code changes. The /JW windowed ceramic package also makes the part useful for low-volume prototype runs and code-development workbenches where the chip must be erased and reprogrammed many times. A key design consideration is that the /JW package is through-hole ceramic and targets bench use rather than high-volume SMT manufacturing. For production designs, design engineers should plan to migrate code to the OTP (-04/-10/-20 speed grades in plastic SO, SP, or SS packages) once firmware is frozen. Because the PIC16C63A is from the C-series EPROM family, RoHS compliance varies by specific package and is generally not lead-free on the /JW package. This page synthesizes distributor availability and pricing, drop-in compatible PIC16CXX mid-range alternatives in the same windowed CDIP-28 footprint, and practical engineering notes - a combination of information not available on the manufacturer datasheet alone.

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PIC16C63-04E/SO - 8-Bit 4MHz OTP MCU, 7KB, 28-SOIC | Microchip

PIC16C63-04E/SP - 8-bit CMOS MCU, 7KB EPROM, 22 I/O | Microchip

PIC16C63-04I/SP - 8-Bit 4MHz OTP MCU 7KB | Microchip

PIC16C63-10/SO - 8-Bit 10MHz OTP MCU 7KB | Microchip

PIC16C63-10/SP - 8-Bit 10MHz OTP MCU | Microchip Technology | 28-SPDIP

PIC16C63-10I/SO - 8-Bit 10MHz 7KB OTP MCU | Microchip 28-SOIC

PIC16C63-20/SO - 8-Bit 20MHz 7KB OTP MCU 28-SOIC | Microchip

PIC16C63-20I/SO - 8-Bit 20MHz 7KB OTP MCU 28-SOIC | Microchip

PIC16C63A-04/SO - 8-Bit 4MHz OTP MCU, 7KB, 28-SOIC | Microchip

PIC16C63A-04/SP - 8-Bit 4MHz OTP MCU 7KB Flash 28-SPDIP | Microchip

PIC16C63A-04E/SP - 8-Bit 4MHz OTP MCU, 7KB Flash, 28-SPDIP

PIC16C63A-04E/SS - 8-Bit 4MHz CMOS MCU, 7KB OTP, 28-SSOP

PIC16C63A-04I/SP - 8-Bit OTP MCU, 4MHz, 7KB | Microchip

PIC16C63A-04I/SS - 8-Bit 4MHz 7KB OTP MCU, SSOP-28 | Microchip

PIC16C63A-20/SO - 8-Bit 20MHz OTP MCU, 7KB, 28-SOIC | Microchip

PIC16C63A-20/SP - 8-bit 20MHz OTP MCU 7KB | Microchip

PIC16C63A-20/SS - 8-Bit 20MHz OTP MCU 7KB | Microchip

PIC16C63A-20E/SO - 8-bit 20MHz OTP MCU, 7KB ROM, SOIC-28 | Microchip

PIC16C63A-20E/SS - 8-Bit 20MHz 7KB OTP MCU | Microchip

PIC16C63A-20I/ML - 8-Bit 20MHz 7KB OTP MCU 28-VQFN | Microchip

PIC16C63A-20I/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip

PIC16C63A-20I/SP - 8-Bit 20MHz OTP MCU 7KB Flash | Microchip

PIC16C63A-20I/SS - 8-Bit 7KB MCU 20MHz OTP 28-SSOP | Microchip

PIC16C63A/JW - 8-Bit 20MHz 7KB EPROM MCU, 28-CDIP | Microchip