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PIC16C63AT-04E/SS - 8-bit 4MHz PIC MCU 7KB OTP 28-SSOP | Microchip
PIC16C63AT-04E/SS

PIC16C63AT-04E/SS - 8-bit 4MHz PIC MCU 7KB OTP 28-SSOP | Microchip

The Microchip Technology PIC16C63AT-04E/SS is a member of the PIC16CXX mid-range 8-bit microcontroller family, featuring 7KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and 22 programmable digital I/O pins, packaged in a 28-pin Shrink Small Outline Package (SSOP). The device is specified for an extended operating temperature range and operates from a 4V to 5.5V supply, with a 4MHz maximum clock rate at this speed grade. It belongs to the PIC16C63A/65B/73B/74B sub-family, sharing peripheral and pinout compatibility across the group. A mid-range 8-bit PIC microcontroller is a fully-static CMOS processor built around a Harvard architecture that separates program and data memory paths. The PIC16CXX family executes most instructions in a single cycle (four oscillator periods), with only program branches taking two cycles, and offers approximately 35 single-word instructions to learn. These MCUs integrate Brown-out Detect/Reset, Power-on Reset, a Watchdog Timer, PWM peripherals, and serial communication controllers, forming a complete embedded control subsystem on a single die. Key specifications include: 8-bit PIC core architecture, 7KB OTP program memory organized as 4K x 14 words, 192 x 8 bytes of RAM, 22 digital I/O pins, and three serial communication peripherals (I2C, SPI, and UART/USART). The Brown-out Detect block protects against unexpected code execution when VDD droops below the safe threshold, while the integrated PWM module simplifies motor, lighting, or analog control tasks. The 28-SSOP package offers a compact footprint suitable for space-constrained PCB layouts. Architecturally, the device uses Microchip's classic mid-range CPU core with a 14-bit instruction word and 8-bit data path. The OTP program memory is programmed once and cannot be electrically erased, which makes this part most suitable for high-volume production runs where firmware is finalized and cost-per-unit dominates over in-field reprogrammability. Compared to flash-based PIC16F equivalents, OTP devices typically offer lower unit cost but lack field-update capability. Typical applications include industrial control modules, white-goods and appliance motor control, HVAC fan and damper drivers, simple sensor interfacing nodes, automotive body electronics sub-modules, and legacy embedded systems that require continued OTP-based production. The combination of UART, SPI, and I2C allows connection to sensors, displays, and other MCUs in mixed-protocol networks. Designers commonly pair this part with external EEPROM for parameter storage, RS-232/RS-485 transceivers, and low-side MOSFET drivers. When designing with this device, confirm that OTP programming flow is acceptable for your product lifecycle. Plan production programming with a Microchip-supported device programmer, allow sufficient margin for the extended temperature grade in worst-case thermal environments, and verify that the SSOP land pattern matches your PCB footprint. Consider PIC16F-series flash alternatives if in-field firmware updates are required. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement and engineering teams a single source for parametric data, supply-chain risk analysis, and selection guidance.

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PIC16C63AT-04I/SO - 8-Bit OTP MCU 7KB 4MHz SOIC-28 | Microchip
PIC16C63AT-04I/SO

PIC16C63AT-04I/SO - 8-Bit OTP MCU 7KB 4MHz SOIC-28 | Microchip

The Microchip Technology PIC16C63AT-04I/SO is an 8-bit CMOS one-time-programmable (OTP) microcontroller in the PIC16CXX mid-range family, delivering 4 MIPS performance at 4 MHz operating frequency in a 28-pin SOIC (SO) package. It integrates 7 KB of OTP program memory (4K x 14 words), 192 bytes of RAM, 22 digital I/O pins, and a peripheral set that includes a USART, SSP, and Capture/Compare/PWM modules, all backed by Microchip's RISC Harvard architecture with only 35 single-word instructions to learn. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data RAM, I/O peripherals, and timers on one silicon die. The PIC16CXX mid-range family is the workhorse tier of Microchip's PIC architecture - it occupies the middle of the company's product pyramid: `PIC16CXX mid-range > PIC 8-bit > PICmicro > PIC16C > PIC family > microcontroller > embedded processor > semiconductor`. Mid-range parts strike a balance between code density, peripheral richness, and cost, which is why they have been embedded into billions of industrial, automotive, and consumer designs over three decades. Key differentiating features include the OTP program memory for low per-unit cost in mature production runs, a wide 4 V to 5.5 V supply range, and a 10 MHz maximum clock speed option available on the 10/20 MHz siblings. The PIC16C63AT-04I/SO variant adds the -04 speed grade (4 MHz) and the -I industrial temperature range (-40C to +85C) over the standard commercial part, all within the same 28-pin SOIC footprint. The device also supports in-circuit serial programming (ICSP) via the RB6/RB7 pins, allowing firmware updates after PCB assembly. Typical applications include industrial control, sensor signal conditioning, low-cost consumer appliances, automotive body controllers (pre-CAN era), and standalone serial peripherals. The OTP memory makes it especially well suited to high-volume mature products where firmware is locked and per-unit cost dominates BOM. When designing with this part, plan around the OTP constraint: once programmed the memory cannot be erased. Engineers should prototype with the pin-compatible PIC16F63 (Flash) variant and migrate to PIC16C63A for production. Always reserve the ICSP pins for in-system programming access. This page consolidates distributor pricing, drop-in alternatives (siblings and Flash-based equivalents), and practical design notes that are not aggregated on any single manufacturer or distributor page.

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PIC16C63AT-04I/SS - 8-bit MCU, 7KB OTP, 4MHz, 28-SSOP | Microchip
PIC16C63AT-04I/SS

PIC16C63AT-04I/SS - 8-bit MCU, 7KB OTP, 4MHz, 28-SSOP | Microchip

The Microchip Technology PIC16C63AT-04I/SS is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family, featuring 7KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and 22 I/O pins, housed in a 28-pin SSOP package. The "T" suffix indicates tape-and-reel packaging, while "04" denotes a 4MHz maximum operating frequency and "I" designates the industrial temperature range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces onto one silicon die. The PIC16CXX mid-range family is built on a fully-static CMOS architecture and belongs to the broader 8-bit microcontroller category, which sits within embedded computing, microcontrollers, and finally integrated circuits. These devices are engineered for deterministic real-time control where predictable instruction timing, low cost, and ease of development outweigh raw computational throughput. Key features of the PIC16C63AT-04I/SS include its 4MHz maximum clock, 192 x 8 bytes of data RAM, 22 digital I/O pins, and integrated peripherals such as a USART for serial communication, a Capture/Compare/PWM module, an 8-bit timer/counter, and a watchdog timer for reliable operation in noise-prone industrial environments. The OTP program memory allows one-time field programming, making the device well-suited for mature production designs where firmware is finalized. Technically, the PIC16C63A employs a RISC-style Harvard architecture with separate program and data buses, providing predictable instruction execution in a single instruction cycle (four clock periods). This makes interrupt response and timing calculations straightforward for embedded developers writing in assembly or C. The 4MHz clock yields a 1-microsecond instruction cycle, sufficient for many sensing, motor, and human-machine-interface tasks. Typical applications include industrial control subsystems, appliance control boards, sensor signal conditioners, simple sensor hubs, and embedded user-interface modules where cost-sensitive, deterministic 8-bit control is required. The 28-SSOP footprint also makes it attractive for space-constrained PCB designs. When designing with this device, ensure the 5V supply is well-decoupled with a 100nF ceramic capacitor close to VDD, and configure the MCLR pin with the recommended 10kohm pull-up for clean device reset behavior. This page synthesizes current distributor inventory, parametric drop-in alternatives, and engineering design notes not found in the standalone manufacturer datasheet.

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PIC16C63AT-20/SO - 8-bit OTP MCU, 7KB, 20MHz, 28-SOIC | Microchip
PIC16C63AT-20/SO

PIC16C63AT-20/SO - 8-bit OTP MCU, 7KB, 20MHz, 28-SOIC | Microchip

The Microchip Technology PIC16C63AT-20/SO is an 8-bit CMOS RISC microcontroller in the PIC16CXX mid-range family, featuring 7KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of SRAM, and 22 digital I/O pins, housed in a 28-pin SOIC package with 20MHz maximum operating frequency at 5V. An 8-bit microcontroller (MCU) is a single-chip computer integrating an 8-bit CPU core, program memory (ROM/Flash/OTP), data RAM, I/O peripherals, and timers onto one silicon die. The PIC16C63A belongs to Microchip's PIC16C mid-range architecture, sitting within the broader hierarchy of PIC microcontrollers -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. Its Harvard RISC architecture with only 35 single-word instructions enables predictable 200ns instruction execution at 20MHz, simplifying both assembly and C code development. Key features include 22 I/O pins supporting digital I/O, three 8-bit timers (Timer0, Timer1, Timer2) and two Capture/Compare/PWM (CCP) modules, a USART for asynchronous/synchronous serial communication, an MSSP module supporting SPI and I2C, and a 10-bit multi-channel analog-to-digital converter for mixed-signal applications. The device integrates brown-out detect and a watchdog timer for enhanced reliability in commercial-grade operating environments. The PIC16C63A uses a 14-bit instruction word optimized for compiled code density, and the OTP memory supports field programming during prototyping. Internal oscillator options and the wide 2.5V to 5.5V supply range (specific to the 'A' silicon revision) allow flexible power tree design. The architecture's deterministic interrupt response and single-cycle multiplication make it well suited to real-time control loops. Typical applications include industrial automation control boards, HVAC thermostat controllers, automotive body electronics (under-hood modules require the 'I' grade), consumer appliance control, and small sensor interface boards. The integrated USART and MSSP peripherals support bridging to RS-232/RS-485 networks and sensor buses. When designing with the PIC16C63AT-20/SO, note the commercial temperature grade (0C to +70C); for extended industrial or automotive deployments, choose the PIC16C63AT-20I/SO variant. Decoupling requires a 100nF ceramic capacitor adjacent to VDD with bulk capacitance sized per load. The 'T' suffix indicates tape-and-reel packaging for high-volume assembly lines.

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PIC16C63AT-20/SS - 8-Bit 20MHz OTP MCU 7KB | Microchip
PIC16C63AT-20/SS

PIC16C63AT-20/SS - 8-Bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C63AT-20/SS is an 8-bit RISC microcontroller from the PIC® 16C family, featuring a 20 MHz maximum CPU clock, 7 KB of One-Time Programmable (OTP) program memory (organized as 4K × 14 words) and 192 bytes of RAM. The device comes in a 28-pin SSOP (shrink small outline) surface-mount package with 22 programmable I/O lines, supporting commercial-grade operation. It integrates peripherals typical of mid-range PIC16 devices including multiple timers, a USART, MSSP for SPI/I2C, and a 5-channel 8-bit ADC. An 8-bit microcontroller (MCU) is a self-contained computing element that integrates a CPU, non-volatile program memory (here OTP), volatile data RAM, I/O peripherals and interrupt logic onto a single silicon die. The 8-bit PIC16C family sits in the hierarchy: microcontroller -> 8-bit MCU -> RISC MCU -> PIC16 mid-range -> PIC16C63A subgroup, and is widely used in cost-sensitive embedded control tasks where deterministic instruction execution and low external component count are priorities. Key features of the PIC16C63AT-20/SS include a Harvard-architecture RISC core that executes most instructions in a single 200 ns cycle (at 20 MHz), 22 digital I/O pins with individually programmable direction registers, a Universal Synchronous/Asynchronous Receiver-Transmitter (USART), a Master Synchronous Serial Port (MSSP) supporting both SPI and I²C, two 8-bit timers and one 16-bit timer/counter, a watchdog timer with on-chip RC oscillator, an analog comparator, and brown-out reset. The OTP program memory allows customization of firmware once per part, with a typical program retention rating designed for the lifetime of the end product. Typical applications include industrial control modules, sensor interfaces, low-speed serial communication bridges (RS-232/RS-485 via USART), motor control and lighting drivers, smart-card readers, consumer appliances, and replacement of discrete logic in legacy embedded designs. The 22 I/O count is sufficient for keypad scanning, LCD drive, and parallel sensor busses. Designers should note that OTP memory can be programmed only once, so development should be performed on a windowed (JW) or flash-based PIC16F equivalent before committing to the PIC16C63AT-20/SS for production. The SSOP-28 footprint is 0.65 mm pitch and is widely supported by hand-soldering and pick-and-place processes. The internal 4 MHz RC oscillator plus an external crystal option provide flexibility for system clocking; selecting the correct configuration fuses at programming time is essential to bring up the application correctly.

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PIC16C63AT-20E/SS - 8-Bit 20MHz OTP MCU, 7KB | Microchip
PIC16C63AT-20E/SS

PIC16C63AT-20E/SS - 8-Bit 20MHz OTP MCU, 7KB | Microchip

The Microchip Technology PIC16C63AT-20E/SS is an 8-bit CMOS microcontroller belonging to the PIC16CXX mid-range family, delivering up to 20 MHz of operation with 7KB of one-time programmable (OTP) program memory and 192 bytes of RAM in a 28-pin SSOP surface-mount package. The 'T' suffix indicates tape-and-reel packaging, '20' denotes the 20 MHz maximum clock speed, 'E' marks the extended industrial temperature grade of -40C to +125C, and '/SS' specifies the 28-SSOP (5.30 mm body width) outline. It exposes 22 I/O pins and integrates peripherals such as a USART, MSSP (SPI/I2C), capture/compare/PWM, and an 8-channel 8-bit ADC. An 8-bit OTP microcontroller (one-time programmable microcontroller) is a class of embedded controller that stores its program in non-volatile memory programmed once at production, retaining code without external storage and offering lower per-unit cost than flash-based equivalents for high-volume mature products. Within the broader taxonomy, the PIC16C63A sits at: PIC16C63A -> PIC16C6xx mid-range family -> PIC16 family -> 8-bit PIC microcontroller -> embedded microcontroller -> integrated circuit -> semiconductor. OTP parts sit alongside EPROM-windowed and flash variants in Microchip's classic PIC16C lineup. Key differentiating features of the PIC16C63AT-20E/SS include its 20 MHz MIPS performance at 5V operation, integrated synchronous serial port (MSSP) supporting both SPI and I2C master/slave modes, an enhanced USART with autobaud detection, and the PIC mid-range 14-bit instruction set that delivers single-cycle execution except for branch instructions. The 28-SSOP package provides a compact 5.30 mm body width suitable for space-constrained industrial controller boards. The PIC16C63A is built on a fully-static CMOS process, allowing the clock to be stopped without losing register state - a useful feature for low-power sleep/awake control loops. The OTP program memory and the absence of internal flash make this part best suited to high-volume production where firmware is final and one-time programming cost is acceptable, with field updates typically handled via board-level replacement or external bootloader memory. Typical applications include industrial automation controllers, automotive body and chassis ECUs, consumer appliance control boards, and sensor interface modules where the PIC16 mid-range instruction set and 5V-tolerant I/O are required. The wide 4V-5.5V supply tolerance supports unregulated 5V rails common in industrial installations. When designing with this part, ensure the OTP programming step is performed before final assembly or via on-board programming through the ICSP interface; field firmware updates are not possible on this device. Decoupling VDD/VSS with 100 nF ceramic capacitors placed within 5 mm of the pins is required for EMI suppression on the analog and digital rails. This page synthesizes distributor inventory (DigiKey, Mouser, Heisener), parametric pin-compatible drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet, helping engineers evaluate the PIC16C63AT-20E/SS against the broader PIC16C6xx family and OTP-vs-Flash migration paths.

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PIC16C63AT-20I/SS - 8-bit OTP MCU, 7KB, 20MHz, SSOP-28 | Microchip
PIC16C63AT-20I/SS

PIC16C63AT-20I/SS - 8-bit OTP MCU, 7KB, 20MHz, SSOP-28 | Microchip

The Microchip Technology PIC16C63AT-20I/SS is an 8-bit RISC CMOS one-time-programmable (OTP) microcontroller from the PIC16CXX mid-range family, supplied in a 28-pin SSOP (5.30 mm body width) package. The device integrates 7 KB of program memory (4K x 14 OTP), 192 bytes of RAM, and 22 digital I/O pins, and executes instructions at 20 MHz maximum clock speed with a 200 ns instruction cycle, supporting 35 single-word instructions for fast code development. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals. Within the broader component taxonomy, an 8-bit MCU belongs to microcontrollers, which fall under integrated circuits and the embedded computing domain. The PIC16C63AT operates from a 4.0 V to 5.5 V supply, features a high-performance RISC CPU, and supports two-cycle program branches (other instructions complete in a single cycle), making it well suited to deterministic real-time control tasks. Key features include 22 general-purpose I/O pins arranged across multiple ports, hardware peripherals compatible with the PIC16C63A/65B/73B/74B family (Capture/Compare/PWM, USART, and synchronous serial port), and on-chip A/D conversion capability per family datasheet. The -20I temperature grade designates industrial range operation from -40 °C to +85 °C. The 'T' suffix denotes tape-and-reel packaging; the /SS suffix denotes the 28-SSOP outline. Architecturally, the PIC16C63AT uses a Harvard-style RISC engine and OTP program memory, which is one-time programmable in production - field re-programmability requires the flash-based PIC16F63x or PIC16F87x equivalents. Compared with older PIC16C5x parts, the mid-range core adds interrupts, a hardware stack, and a richer peripheral set while retaining the classic 35-instruction RISC instruction set, easing porting of legacy code. Typical applications include industrial control, motor control (PWM-driven), embedded serial communications (USART/SPI/I2C via the synchronous serial port), instrumentation, and any 5 V 8-bit embedded system that requires a small-form-factor SSOP-28 footprint. When designing, ensure your programmer supports the OTP device variant and that your firmware revision strategy accounts for one-time-only programming; consider the flash-based PIC16F873A-I/SS for prototypes requiring iteration.

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PIC16C63T-04/SO - 4MHz 8-Bit OTP MCU, 7KB Flash, 28-SOIC
PIC16C63T-04/SO

PIC16C63T-04/SO - 4MHz 8-Bit OTP MCU, 7KB Flash, 28-SOIC

The Microchip Technology PIC16C63T-04/SO is an 8-bit RISC microcontroller from the PIC16C6X family, delivering 4MHz maximum clock speed with 7KB (4K x 14) of One-Time-Programmable (OTP) program memory and 192 bytes of data RAM, housed in a 28-pin SOIC (SO) package. This CMOS, fully-static device operates from a 4.0V to 5.5V supply voltage and exposes 22 I/O pins, making it suitable for a wide range of embedded control applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + RAM), and peripherals onto one silicon die. The PIC16C6X family is part of Microchip's PIC (Peripheral Interface Controller) architecture, itself a category of microcontroller ICs that falls under the broader taxonomy of microcontrollers -> microprocessors -> integrated circuits -> semiconductors. The 'C' in PIC16C63 denotes a one-time-programmable CMOS variant, as distinct from the flash-based PIC16F family and the read-only-memory PIC16 family. The 'T' suffix indicates tape-and-reel packaging, while '-04' specifies the 4MHz speed grade. Key features of the PIC16C63T-04/SO include a high-performance RISC CPU with only 35 single-word instructions, all executing in a single cycle except program branches (two cycles). On-chip peripherals include one USART (asynchronous/synchronous serial), one MSSP module supporting both I2C (Master/Slave) and SPI (Master/Slave) interfaces, three timer/counters (Timer0, Timer1, Timer2), a 5-channel 8-bit ADC, and a watchdog timer with on-chip RC oscillator for reliable operation. The instruction set is fully compatible across the PIC16C6X family, easing code portability. The PIC16C63T-04/SO architecture uses a Harvard-style separate code/data bus arrangement with a 14-bit program word and 8-bit data path. Its OTP program memory (7KB) is field-programmable only once, which suits cost-sensitive, high-volume production where the firmware is finalized at build time. Device programming is supported by the MPLAB PM3 Universal Device Programmer. The interrupt structure, on-chip reset circuitry (POR, BOR), and selectable oscillator options (RC, LP, XT, HS) simplify board-level design. Typical applications include industrial control panels, motor drive front-ends, sensor signal conditioning, consumer appliances, automotive body electronics, and low-power instrumentation. The combination of USART + I2C/SPI + ADC makes it ideal for any system that needs to talk to sensors, drive relays or displays, and communicate with a host. Because OTP memory cannot be re-flashed, designs must be prototyped with a windowed (JW) or UV-erasable equivalent (PIC16C63-04/JW) before committing to the production OTP part. When designing with this part, ensure the brown-out reset voltage is set above the minimum operating voltage (typically 4.0V) to avoid code corruption at slow VDD ramp times. The 28-SOIC package has a wider body than 8-pin SOIC, so PCB land pattern must match JEDEC MS-013 (0.300 inch body width). Use an external decoupling capacitor pair (100nF + 10uF) within 5mm of VDD, and configure the MCLR pin with the recommended 10k pull-up if hardware-reset is desired. This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, lists same-brand drop-in alternatives within the PIC16C6X family, and provides practical design notes not found in the manufacturer datasheet alone.

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PIC16C63T-04E/SO - 8-Bit 4MHz OTP MCU, 7KB Flash, 28-SOIC | Microchip
PIC16C63T-04E/SO

PIC16C63T-04E/SO - 8-Bit 4MHz OTP MCU, 7KB Flash, 28-SOIC | Microchip

The Microchip Technology PIC16C63T-04E/SO is an 8-bit RISC microcontroller from the PIC16C6X family, featuring a 4MHz CPU core, 7KB (4K x 14) of One-Time-Programmable (OTP) program memory and 192 bytes of RAM, housed in a 28-pin SOIC package with industrial-grade -40C to +125C operating range. The "T" suffix denotes tape-and-reel packaging and "E" denotes the extended temperature grade, while "/SO" identifies the 7.50mm wide 28-SOIC footprint. An 8-bit OTP microcontroller is a single-chip computer that integrates a CPU, non-volatile program memory (programmable once), RAM, and peripherals on one silicon substrate. Within the broader taxonomy, the PIC16C63 belongs to the PIC16C family -> PIC microcontroller family -> 8-bit MCU category -> microcontroller -> semiconductor. OTP memory occupies a specific niche between mask-ROM (cheapest, factory-programmed) and flash (reprogrammable), offering fast prototype-to-production migration without the cost of a windowed or flash part. Key features include 22 digital I/O lines, three communication peripherals (UART/USART, SPI, and I2C), two 8-bit timers plus one 16-bit timer, a 5-channel 8-bit ADC, and 35 single-word RISC instructions with all but program branches executing in a single 4MHz clock cycle. The CMOS, fully-static design allows the clock to be stopped without losing register state, an unusual and useful feature for ultra-low-power sleep modes. The PIC16C63 core uses a Harvard architecture with separate program and data buses, enabling instruction fetch and operand read to occur in the same cycle. With a 4MHz oscillator and a 4-clock-per-instruction cycle, the device executes approximately 1 MIPS, adequate for simple control loops, sensor interfacing, and human-machine-interface tasks. Program memory is organized as 4K words of 14 bits each (7KB total), and the device supports in-circuit serial programming via two pins, simplifying firmware load during manufacturing. Typical applications include industrial sensor interfaces, HVAC damper/valve control, appliance front-panel controllers, automotive body modules (where the E temperature grade is acceptable), and low-cost consumer devices such as washing-machine controllers and battery chargers. The UART + SPI + I2C peripheral combination is especially valuable for bridging legacy serial devices and modern digital sensors. When designing with this part, note that OTP memory cannot be re-programmed in-circuit - firmware must be fully validated before commitment. Allocate sufficient RAM headroom (192 bytes is modest); for stack-heavy algorithms consider migrating to a PIC16C63A or PIC16F equivalent with more memory. This page synthesizes distributor pricing, verified drop-in alternatives drawn from Microchip's own PIC16C6X family, and practical design notes not aggregated in the standalone datasheet.

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PIC16C63T-10E/SO - 8-Bit OTP MCU 7KB ROM 10MHz 28-SOIC | Microchip
PIC16C63T-10E/SO

PIC16C63T-10E/SO - 8-Bit OTP MCU 7KB ROM 10MHz 28-SOIC | Microchip

The Microchip Technology PIC16C63T-10E/SO is an 8-bit One-Time Programmable (OTP) RISC microcontroller in a 28-pin SOIC wide-body package, with 7KB of program memory, 192 bytes of data RAM, 22 digital I/O lines, and a maximum clock speed of 10 MHz. The 'E' suffix denotes the extended automotive temperature grade (-40C to +125C), and the 'T' suffix denotes tape-and-reel packaging. The '10' speed code marks a 10 MHz maximum operating frequency, while the underlying silicon supports DC to 20 MHz clock input per the PIC16C6X family specification. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and programmable I/O peripherals. The PIC16C6X family is built around a Harvard-architecture RISC core executing 35 single-word instructions in one instruction cycle (200 ns at 20 MHz), except for program branches which take two cycles. The OTP variant uses one-time-programmable EPROM for code storage, suitable for low-to-medium volume production where in-circuit reprogrammability is not required and field updates are unnecessary. Key features of the PIC16C63T-10E/SO include three 8-bit I/O ports (PORTA, PORTB, PORTC) for 22 usable I/O pins, an integrated USART for serial communication, a capture/compare/PWM (CCP) module, two 8-bit timers with one 16-bit timer, an 8-bit A/D converter with up to 5 channels on PORTA, and a watchdog timer with on-chip RC oscillator for reliable reset behavior. The device operates from 4.0V to 5.5V and includes power-on reset, brown-out detection, and in-circuit serial programming (ICSP) capability. The architecture uses a 14-bit instruction word, 8-bit data path, separate program and data buses (Harvard), and a two-stage pipeline that lets most instructions complete in a single 200 ns cycle at 20 MHz. The 10 MHz grade in this part reflects the -10E speed bin, while the core architecture itself is identical to other PIC16C6X devices. The wide-body 28-SOIC package provides 0.300 inch (7.62 mm) width, footprint-compatible with the standard 28-SOIC but with more clearance for hand-soldering and inspection. Typical applications include automotive body controllers and instrument clusters, industrial sensor conditioning, appliance control boards, HVAC fan/valve drivers, and any embedded design requiring deterministic 8-bit control with a small memory footprint. The automotive temperature grade makes this part especially suitable for under-hood and cabin modules with extended thermal stress. A key design consideration: because PIC16C63T-10E/SO is OTP, firmware must be fully validated before committing to the production order. For prototypes or low-volume production with field updates, consider the flash-based PIC16F63 or PIC16F73 in the same 28-SOIC footprint. Verify the ICSP programming fixture and test coverage during NPI. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16C6X family, automotive-grade vs industrial-grade comparison data, and practical OTP programming guidance not found in the manufacturer datasheet alone.

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PIC16C63T-10I/SO - 8-Bit OTP MCU, 10MHz, 7KB | Microchip
PIC16C63T-10I/SO

PIC16C63T-10I/SO - 8-Bit OTP MCU, 10MHz, 7KB | Microchip

The Microchip Technology PIC16C63T-10I/SO is a high-performance, fully-static 8-bit CMOS RISC microcontroller housed in a 28-pin SOIC (SO) package, featuring 7 KB of One-Time-Programmable (OTP) program memory, 192 bytes of data RAM, 22 I/O lines, and a maximum clock speed of 10 MHz. It belongs to the PIC16C6X family and supports a 4 V to 5.5 V supply voltage range with industrial temperature grade (-40 C to +85 C). What is a PIC microcontroller? A PIC (Peripheral Interface Controller) microcontroller is a compact, programmable integrated circuit that combines a CPU, non-volatile program memory (ROM/OTP/Flash), volatile data memory (RAM), and configurable peripherals (timers, ADCs, communication interfaces) on a single die. Within the broader semiconductor taxonomy, a microcontroller falls under microcontrollers -> embedded processors -> integrated circuits -> semiconductors. The PIC16C6X family specifically targets cost-sensitive 8-bit applications where deterministic instruction execution, low power consumption, and rich peripheral integration are required. Key features of the PIC16C63T-10I/SO include its 35 single-word instruction set (all single-cycle except program branches which are two-cycle), dedicated hardware USART, SPI, and I2C communication peripherals, a 14-bit instruction word architecture, and four interrupt sources. The device also integrates a watchdog timer with its own on-chip RC oscillator for reliable operation, plus power-saving SLEEP mode and a programmable code-protection scheme for the OTP memory. Architecturally, the PIC16C63T-10I/SO uses a Harvard-style separate program and data bus design that allows simultaneous instruction fetch and data access. The OTP program memory of 7 KB is organized as 4 K x 14 words and is one-time programmable, meaning each bit cell can be programmed exactly once - after which the contents are non-volatile and field-erasable only by UV exposure on windowed packages. The 192-byte data RAM provides general-purpose storage, while the 22 I/O pins are multiplexed with peripheral functions and support individual direction control. Typical applications include industrial control systems, sensor interface modules, consumer appliances, automotive body electronics, motor control boards, and embedded communication peripherals. The integrated I2C/SPI/USART peripherals make this MCU especially attractive for bridging legacy sensor networks to modern microcontrollers. When designing with this part, note that the OTP memory cannot be re-programmed - prototypes should use the equivalent PIC16F63 or PIC16C63 JW (windowed) variants to allow iteration. Brown-out detection, the watchdog timer, and the integrated oscillator help achieve robust field reliability without external components. This page synthesizes distributor stock levels, same-package drop-in alternatives, and design notes that go beyond what the manufacturer datasheet alone provides - including a comparison with the PIC16C63-10I/SO industrial-temperature sibling and practical guidance on selecting a flash-based replacement for new designs.

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PIC16C63T-20I/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip
PIC16C63T-20I/SO

PIC16C63T-20I/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C63T-20I/SO is an 8-bit RISC microcontroller from the PIC16Cxx family, featuring a 20MHz maximum operating frequency, 7KB (4K x 14) of One-Time Programmable (OTP) program memory, and 192 bytes of RAM, all housed in a 28-pin SOIC (7.50mm width) surface-mount package with industrial temperature grade (-40C to +85C). It belongs to Microchip's mid-range PIC architecture with 35 single-word instructions, single-cycle execution (except program branches which are two-cycle), and a fully-static CMOS design. A PIC microcontroller (Peripheral Interface Controller) is a family of Harvard-architecture microcontrollers originally developed by Microchip Technology that integrate a CPU, memory (program ROM/Flash/OTP and RAM), and peripheral interfaces (timers, ADC, PWM, communication ports) into a single IC. Within the broader taxonomy, PIC16C63 sits in the hierarchy: PIC16Cxx -> mid-range PIC -> 8-bit microcontroller -> microcontroller -> embedded IC -> semiconductor. The 'C' designation indicates CMOS EPROM/OTP technology, distinguishing it from the Flash-based 'F' variants (such as PIC16F716). These OTP devices are intended for volume production where firmware is finalized and in-circuit reprogrammability is not required. Key features of the PIC16C63T-20I/SO include integrated peripherals such as Brown-out Detect/Reset (BOR), Power-On Reset (POR), Pulse Width Modulation (PWM) outputs, and a Watchdog Timer (WDT) for reliable embedded operation. The device operates from a 5V supply (typical), with a DC to 20MHz clock range. Its compact 28-SOIC package and industrial temperature range make it suitable for through-hole-replacement surface-mount designs in industrial control and consumer embedded systems. Typical applications include industrial control logic, sensor interface modules, motor control signal generation via PWM, simple communication bridging using USART, and white-goods/appliance control boards. The combination of OTP memory and industrial-grade temperature rating suits mature, cost-sensitive production designs where firmware stability and predictable cost over the product lifecycle are essential. When designing with this device, note that OTP memory is one-time programmable and cannot be re-flashed, so firmware must be fully validated before programming. Use the MPLAB PM3 Universal Device Programmer or equivalent EPROM programmer. For designs requiring in-circuit reprogrammability, consider the PIC16F63 or PIC16F716 Flash-based equivalents in the same 28-SOIC footprint. This page synthesizes Microchip datasheet specifications, distributor pricing tiers, drop-in alternative MPNs, and practical design notes that go beyond the manufacturer datasheet to support sourcing and design decisions.

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PIC16C642-04/SO - 4MHz 8-bit OTP MCU, 7KB Flash, 22 I/O | Microchip
PIC16C642-04/SO

PIC16C642-04/SO - 4MHz 8-bit OTP MCU, 7KB Flash, 22 I/O | Microchip

The Microchip Technology PIC16C642-04/SO is an 8-bit CMOS RISC microcontroller with 4 MHz maximum clock input, 7 KB (4K x 14) of One-Time-Programmable (OTP) program memory, 176 bytes of RAM, and 22 digital I/O pins, housed in a 28-pin SOIC (SO) package. The "-04" speed grade designates the 4 MHz clock input, while the "/SO" suffix denotes the 7.50 mm body-width small-outline IC package. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and programmable I/O peripherals. The PIC16C642 belongs to the PIC16C family of OTP-based 8-bit microcontrollers, which sit at the entry level of the PIC architecture hierarchy: MCU -> 8-bit MCU -> PIC16 family -> PIC16C sub-family. These MCUs use a RISC (Reduced Instruction Set Computer) architecture that executes most instructions in a single 200 ns instruction cycle (with program branches taking two cycles). Key features of the PIC16C642 include 35 single-word instructions for fast code development, a wide 4V to 5.5V supply voltage range, integrated Brown-out Reset (BOR) and Power-on Reset (POR), an external oscillator interface, and 22 general-purpose I/O pins. The device is offered in commercial and industrial temperature grades. The 8-bit RISC core uses a Harvard architecture with separate program and data buses. Code is executed from OTP program memory; the 176-byte RAM provides data storage. This older-generation OTP architecture is suitable for cost-sensitive embedded applications that require code security (one-time programming prevents firmware readout) and low per-unit cost. Typical applications include appliance controls, simple sensor interfaces, hobby and educational projects, and low-volume industrial controllers. Modern designs often migrate to flash-based PIC16F equivalents for reprogrammability. When designing with this part, ensure the chosen oscillator crystal or external clock meets the 4 MHz maximum, and follow Microchip's in-circuit serial programming (ICSP) guidelines for OTP programming. This page synthesizes distributor pricing, parametric specifications, and pin-compatible alternatives from Microchip's PIC16C lineup not found in the manufacturer datasheet alone.

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PIC16C642-04E/SO - 8-Bit 4MHz 7KB OTP MCU 28-SOIC | Microchip
PIC16C642-04E/SO

PIC16C642-04E/SO - 8-Bit 4MHz 7KB OTP MCU 28-SOIC | Microchip

The Microchip Technology PIC16C642-04E/SO is an 8-bit CMOS OTP (One-Time Programmable) microcontroller from the PIC16C family, featuring a 4MHz maximum clock speed, 7KB (4K x 14) of program memory, and 176 bytes of data RAM, housed in a 28-pin SOIC (7.50mm body width) surface-mount package. It delivers 22 general-purpose digital I/O pins, executes instructions in a 200ns single-cycle time, and supports a 35-instruction RISC-based instruction set designed for fast and compact code generation in cost-sensitive embedded applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral I/O on one die. The PIC16C642 belongs to the mid-range PICmicro MCU family, sitting within the broader 8-bit MCU taxonomy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor). OTP variants are programmed once at production or in the field with a device programmer and cannot be erased, making them ideal for mature, fixed-function products with stable firmware. The 'C' in PIC16C642 indicates the OTP-programmable CMOS core, while the '642' places it in the 28-pin mid-range pinout family with capture/compare/PWM and an 8-bit A/D converter. Key features of the PIC16C642-04E/SO include the 4MHz oscillator (the '-04' speed code), 7KB OTP program memory, 176 bytes of RAM, 22 I/O pins, a 200ns instruction cycle, integrated timer/counter modules, and an extended temperature grade of -40C to +125C (the '-E' suffix). The 28-SOIC package offers a 0.295" (7.50mm) body width and 1.27mm pitch, well-suited for hand-soldering and low-density production runs. The part is lead-free and RoHS-compliant per the Microchip product page. The PIC16C642 uses a Harvard RISC architecture with separate program and data buses, an 8-bit ALU, and 14-bit instruction words for compact code. The 4MHz oscillator combined with a 4:1 internal divider gives the documented 1 MIPS (200ns instruction cycle) throughput. Power-saving features include SLEEP mode with wake-up on interrupt and a Watchdog Timer with an on-chip RC oscillator for reliable system recovery without external components. Typical applications include appliance controllers, simple sensor readouts, automotive body modules, industrial timer/counter boards, LED driver sequencers, and consumer white-goods user interfaces. The extended temperature grade makes it suitable for under-hood automotive subsystems and outdoor industrial enclosures. The 22 I/O pins allow direct connection to keypads, seven-segment displays, low-cost LCDs, and serial EEPROMs for data logging. When designing with this MCU, consider that OTP memory cannot be re-programmed, so a FLASH-based PIC16F equivalent (e.g., PIC16F648A) is recommended during prototyping. Adequate decoupling (100nF ceramic plus 10uF bulk) is required on VDD/AVDD pins, and unused I/O should be configured as outputs low to minimize power consumption in SLEEP mode. The ICSP programming interface uses RB6 (clock) and RB7 (data) and must be reserved for in-circuit programming access. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving embedded engineers a single reference for sourcing, substitution, and design-in of the PIC16C642-04E/SO.

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PIC16C642-04E/SP - 8-Bit OTP MCU, 4MHz, 7KB EPROM, 28-SPDIP | Microchip
PIC16C642-04E/SP

PIC16C642-04E/SP - 8-Bit OTP MCU, 4MHz, 7KB EPROM, 28-SPDIP | Microchip

The Microchip Technology PIC16C642-04E/SP is an 8-bit CMOS OTP microcontroller from the PIC16C6x family, featuring a 4 MHz maximum operating frequency, 7 KB (4K x 14) of One-Time-Programmable EPROM program memory, 176 bytes of RAM, and 22 digital I/O lines, housed in a 28-pin SPDIP (Skinny Plastic DIP, 0.300 inch / 7.62 mm width) through-hole package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data memory (RAM), and peripheral interfaces on one die. The PIC16C family uses Microchip's RISC (Reduced Instruction Set Computer) Harvard architecture, which separates program and data buses for higher instruction throughput than von Neumann designs. The PIC16C642 specifically targets low-cost, high-volume embedded control in the PIC mid-range family, and was later superseded by the Flash-based PIC16F family for new designs while remaining available for legacy and automotive/extended-temperature sockets. Key specifications include a wide operating voltage range of 2.5 V to 6.0 V, fully static operation (clock can be stopped), ultra-low power consumption of 15 µA typical at 5 V / 4 MHz and 1 µA typical at 3 V / 32 kHz, an integrated analog comparator, a 14-bit instruction word, and commercial / industrial / automotive temperature grade support. The 22 I/O pins can source/sink up to 25 mA per pin for direct LED drive. An 8-bit timer/counter and a watchdog timer are on-chip. The architecture implements a 14-bit wide instruction set with 35 single-word single-cycle instructions (excluding branches, which are two-cycle), giving an effective throughput near 4 MIPS at 4 MHz. Two hardware addressable interrupt sources (external RB0/INT and peripheral) are supported. The integrated analog comparator plus 8-bit timer enable closed-loop control without external ICs. Typical applications include automotive body and chassis subsystems, industrial control logic, sensor signal conditioning, LED lighting controllers, simple appliance controls, and remote-keyless-entry transmitters. The extended temperature grade and OTP memory make it well suited to volume production where firmware is finalized and in-field reprogramming is not required. When designing with this part, note that OTP memory cannot be rewritten. For prototyping or in-field updates use the Flash-based PIC16F642 equivalent. Always include decoupling capacitors (100 nF + 10 µF) close to VDD/VSS pins, and respect the MCLR pin reset circuit requirements (typically 10 kΩ pull-up to VDD with optional 10 nF delay). This page synthesizes distributor pricing, drop-in alternatives drawn from Microchip's 28-pin PICmidrange pin/code compatibility chart, and practical design notes that complement the manufacturer datasheet.

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PIC16C642-04I/SO - 8-Bit 4MHz OTP MCU, 7KB, 22 I/O | Microchip
PIC16C642-04I/SO

PIC16C642-04I/SO - 8-Bit 4MHz OTP MCU, 7KB, 22 I/O | Microchip

The Microchip Technology PIC16C642-04I/SO is an 8-bit CMOS OTP-based microcontroller from the PIC16C6x family, featuring a 4 MHz maximum clock speed, 7 KB (4K x 14) of OTP program memory, 176 bytes of RAM, and 22 digital I/O pins in a 28-pin SOIC package. As a member of the powerful PIC RISC architecture family, it executes instructions in a 200 ns single-cycle time and provides 35 single-word instructions for easy programming. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral I/O on a single die. Within the broader semiconductor taxonomy, the PIC16C642 sits at: microcontroller -> 8-bit MCU -> PIC16C family -> CMOS OTP microcontroller -> embedded processor. It belongs to the legacy PIC16C OTP (One-Time Programmable) EPROM-based series, which was succeeded by the flash-based PIC16F family but remains in production for long-life-cycle industrial equipment. Key features include an operating voltage range of 4V to 6V, two analog comparators, a programmable code protection bit, power-on reset (POR), power-up timer (PWRT), oscillator start-up timer (OST), and a watchdog timer with its own on-chip RC oscillator for reliable operation. The device offers up to 20 MHz operation (10 MHz at this -04 speed grade), 200 ns instruction cycle, and all 35 instructions are single-word/single-cycle except program branches which take two cycles. The wide operating temperature range (-40C to +85C industrial grade) makes it suitable for harsh environments. The PIC16C642 is built on Microchip's proven PIC Harvard-architecture RISC core, with separate program and data buses enabling simultaneous instruction fetch and operand access. Its CMOS EPROM cell provides non-volatile code storage, with OTP variants (such as this -04I/SO) intended for volume production where code is finalized. The 22 I/O pins can be individually configured as inputs or outputs, with high-current sink/source capability for direct LED drive. Typical applications include industrial control systems, appliance controls, security and alarm panels, automotive body electronics, sensor interfaces, low-power remote sensors, and consumer electronics requiring deterministic real-time response. The two on-chip analog comparators are particularly useful for battery monitoring, threshold detection, and zero-crossing detection without external components. When designing with this device, ensure the external oscillator or crystal is properly selected for the 4 MHz target frequency. Note that OTP parts cannot be reprogrammed, so code must be fully verified before programming. For new designs, consider the flash-based PIC16F family (such as PIC16F630 or PIC16F676) for in-circuit reprogrammability and broader tool support. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing a complete sourcing reference for procurement and design engineers evaluating legacy 8-bit MCU options.

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PIC16C642-04I/SP - 8-bit OTP MCU, 7KB EPROM, 22 I/O | Microchip
PIC16C642-04I/SP

PIC16C642-04I/SP - 8-bit OTP MCU, 7KB EPROM, 22 I/O | Microchip

The Microchip Technology PIC16C642-04I/SP is an 8-bit OTP (One-Time-Programmable) EPROM-based CMOS microcontroller with 7 KB of program memory, 176 bytes of RAM, and 22 digital I/O pins, housed in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. It operates from a 4 V to 5.5 V supply and runs the 35-instruction PIC16C RISC instruction set, with a 4 MHz maximum oscillator input producing 200 ns single-cycle instruction execution (excluding two-cycle branches). What is an OTP 8-bit microcontroller? An OTP microcontroller is a class of embedded controller that uses one-time-programmable EPROM to store firmware, offering a low-cost path for volume production after prototype validation. Microcontrollers of this type sit at the bottom of the embedded hierarchy: MCU -> 8-bit MCU -> CMOS MCU -> EPROM/OTP MCU -> peripheral-rich industrial controller. The PIC16C642 family is part of the PIC16C6x mid-range series, integrating the CPU, EPROM program store, RAM data memory, timers, comparators, and a programmable voltage reference in a single chip. Key features include 7 KB (4K x 14) of program memory, 176 bytes of data RAM, 22 I/O pins, one 8-bit Timer/Counter with an 8-bit programmable prescaler, two analog comparators with a programmable on-chip voltage reference, and a watchdog timer for reliable unattended operation. The device is specified across the industrial temperature range of -40 °C to +85 °C and supports a maximum clock of 4 MHz (the "04" speed suffix), giving a 1 µs instruction cycle. Brown-out detection and power-on reset are provided for robust embedded behavior. Typical applications include industrial control systems, appliance controls, security and alarm panels, instrumentation front-ends, automotive body electronics (non-safety), and educational development platforms where a windowed/UV-erasable or OTP variant is acceptable for cost reasons. The two on-chip comparators make the part especially suitable for analog signal conditioning and threshold detection without an external op-amp. When designing with the PIC16C642-04I/SP, ensure that the oscillator configuration matches the application - the '04' suffix limits the device to a 4 MHz max clock. Because the SP package is through-hole SPDIP-28, it is preferred for prototype, hobby, and educational environments where DIP sockets simplify rework; consider the SOIC or windowed ceramic variants for surface-mount production or development/programming cycles.

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PIC16C642-10I/SO - 8-Bit OTP MCU, 7KB EPROM, 22 I/O | Microchip
PIC16C642-10I/SO

PIC16C642-10I/SO - 8-Bit OTP MCU, 7KB EPROM, 22 I/O | Microchip

The Microchip Technology PIC16C642-10I/SO is an 8-bit CMOS EPROM-based microcontroller with 7KB (4K x 14) of One-Time-Programmable (OTP) program memory, 176 bytes of RAM, and 22 digital I/O lines, housed in a 28-pin SOIC package (300-mil body width). It operates from a 4V to 5.5V supply, executes instructions at 200 ns per cycle (10 MHz clock) with only 35 single-word instructions, and integrates two analog comparators alongside the standard PIC16C peripheral set. Background context: An 8-bit microcontroller is a single-chip computer integrating a CPU, non-volatile program memory (here, OTP EPROM), working RAM, and peripherals into one package. Within the taxonomy, the PIC16C642 belongs to the OTP-EPROM PIC16 mid-range family, which sits below the PIC18 family and above base-line PIC10/12/14 devices. These MCUs are widely used in cost-sensitive, low-volume, or ruggedized embedded designs where field reprogramming is not required and the simplicity of the PIC RISC core outweighs the larger code density of 16-bit alternatives. Key features include a 200 ns instruction cycle, 8-level hardware stack, power-on reset, brown-out detection, watchdog timer with its own on-chip RC oscillator, programmable code protection, and selectable oscillator modes (RC, XT, HS, LP). The two on-chip analog comparators feature programmable on-chip voltage reference and rail-to-rail inputs, allowing direct interface to analog sensors without external op-amps. Code protection and an ICD-friendly architecture simplify prototyping and production. The architecture combines a RISC Harvard CPU with separate program and data buses, achieving deterministic single-cycle execution except for program branches (two cycles). With 128 bytes of EEPROM data memory on-die, designers can store calibration constants, serial numbers, or runtime configuration that survives power cycles without external storage. Common applications include industrial control panels, appliance controllers, automotive body modules, security-system sensor interfaces, and consumer remote controls. The wide supply range and on-chip analog comparators suit battery chargers, and the 22 I/O pins comfortably drive keypads, LED arrays, and small character displays. Design tip: choose the oscillator mode carefully - HS requires an external crystal up to 20 MHz, XT up to 4 MHz, LP minimizes quiescent current for battery operation, and RC mode uses an external resistor/capacitor for the lowest BOM cost. Always place a decoupling capacitor within 5 mm of VDD and use an isolation resistor on MCLR for in-circuit debugging. This page synthesizes distributor pricing tiers, same-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C642-20/SO - 8-bit OTP MCU 7KB EPROM 22 I/O | Microchip
PIC16C642-20/SO

PIC16C642-20/SO - 8-bit OTP MCU 7KB EPROM 22 I/O | Microchip

The Microchip Technology PIC16C642-20/SO is a CMOS OTP-based 8-bit microcontroller from the PIC16C mid-range family, featuring 7KB (4K x 14) of one-time-programmable program memory, 176 bytes of RAM, and 22 general-purpose digital I/O pins. Housed in a 28-pin SOIC (7.50 mm) wide-body package, the device executes a 200 ns single-cycle instruction at 20 MHz and operates from a 4 V to 6 V supply, drawing very low quiescent current to suit battery-aware embedded designs. What is a PIC16C-series 8-bit microcontroller? The PIC16C family is Microchip's classic mid-range OTP (One-Time Programmable) microcontroller line, based on a RISC Harvard architecture with a small instruction set of only 35 single-word instructions. In the broader taxonomy: 8-bit microcontroller -> RISC MCU -> mid-range MCU -> PIC16C family -> embedded microcontroller. Each instruction completes in one instruction cycle (four clock periods), giving deterministic 200 ns execution at 20 MHz, and the architecture separates program and data buses so that program fetch and data access can overlap. Key features of the PIC16C642-20/SO include: two on-chip analog comparators, a Brown-out Reset (BOR) circuit, a Watchdog Timer (WDT) with its own on-chip RC oscillator, power-saving SLEEP mode, and programmable code protection. The 22 I/O pins can be individually configured for digital input or output. An external oscillator is required (crystal, resonator, or RC), giving the designer flexibility over accuracy, cost, and start-up time versus the internal oscillator variants found on later PIC16F families. Typical applications include appliance controls, simple sensor interfaces, low-cost motor control, automotive body electronics (non-safety), industrial control panels, and white-goods user interfaces. The 4-6 V operating range is compatible with 5 V regulated rails, and the 22 I/O count is enough to drive keypads, LED or LCD indicator panels, and a handful of analog signals via the on-chip comparators. When designing in the PIC16C642-20/SO, remember that OTP memory cannot be erased - firmware must be correct on the first programming. The wide-body SOIC package is convenient for hand-prototyping and through-hole adapter boards, but for volume production the PIC16F equivalent with Flash memory is usually preferred. Always include decoupling (100 nF plus 10 uF) close to VDD/VSS and follow Microchip's recommended oscillator layout to avoid start-up failures. This page synthesizes distributor pricing, package-equivalent drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC16C642-20E/SO - 8-bit OTP MCU, 7KB, 22 I/O, 28-SOIC | Microchip
PIC16C642-20E/SO

PIC16C642-20E/SO - 8-bit OTP MCU, 7KB, 22 I/O, 28-SOIC | Microchip

The Microchip Technology PIC16C642-20E/SO is an 8-bit One-Time-Programmable (OTP) microcontroller in the PIC16C family, offering 7KB (4K x 14) of program memory, 176 bytes of RAM, and 22 I/O pins, housed in a 28-pin SOIC package with a 20 MHz maximum clock and a 200 ns instruction execution time. Designed for automotive temperature grade operation, the device integrates the classic PIC RISC architecture with only 35 single-word instructions, on-chip analog comparators, and brown-out reset, enabling compact firmware footprints in cost-sensitive embedded designs. The 'E' suffix designates the extended automotive temperature range (-40C to +125C) and the '20' speed grade indicates a 20 MHz oscillator input, translating to a 5 MIPS instruction throughput. A PIC microcontroller (Peripheral Interface Controller) is a Harvard-architecture RISC microprocessor family originally developed by Microchip Technology. PIC microcontrollers combine a small instruction set (RISC) with separate program and data buses, allowing single-cycle instruction execution under typical conditions. They sit within the broader taxonomy: microcontroller -> embedded processor -> microprocessor -> semiconductor IC. The PIC16C sub-family adds one-time-programmable EPROM program memory, making these parts suitable for low-volume production and legacy designs where in-system reprogramming is not required. Key features of the PIC16C642 include the 8-bit timer/counter with prescaler, capture/compare/PWM module, 8-channel 8-bit ADC (multiplexed), synchronous serial port (SSP) supporting SPI and I2C, and a USART for asynchronous serial communication. The device also provides a watchdog timer with its own on-chip RC oscillator for reliable recovery, power-on reset, and a programmable code-protection scheme to safeguard firmware IP. The PIC16C642 uses a 14-bit instruction word with a Harvard memory layout, which is why the program memory is referenced as 7KB (4K x 14). This wider instruction word provides richer addressing and branch capability compared to 12-bit PIC cores, while keeping code density high. Internal peripheral features are mapped to a bank of special-function registers, and the device operates from a single 5V supply typical of industrial and automotive embedded systems. Typical applications for the PIC16C642-20E/SO include automotive body and chassis controllers, industrial sensor interfaces, simple motor control loops, and appliance user-interface boards. The extended temperature grade and OTP program memory make it a strong fit for production runs where firmware is finalized and a cost-optimized non-reprogrammable solution is preferred. When designing with this part, plan oscillator and I/O pin assignments early because OTP cannot be changed after programming. Use MPLAB IDE with Hi-Tech PICC or MPLAB XC8 compilers to generate the .HEX image, then program the device using Microchip's PM3 programmer or a compatible gang programmer. This page synthesizes distributor pricing, drop-in alternatives from the same PIC16C and PIC16F families, and practical design notes not found in the manufacturer datasheet alone, helping engineers compare the part against both pin-compatible OTP and Flash siblings.

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PIC16C642-20I/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip
PIC16C642-20I/SO

PIC16C642-20I/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C642-20I/SO is an 8-bit RISC CMOS microcontroller in the PIC16C family, integrating 7KB (4K x 14) of One-Time-Programmable (OTP) program memory, 176 bytes of RAM, and 22 digital I/O pins in a 28-pin SOIC (SO) package. Operating at up to 20 MHz clock input, the device executes instructions in a 200 ns single cycle (except program branches which take two cycles) from a 35-instruction RISC core. The industrial-grade -40C to +85C temperature range (denoted by the -I suffix) and 4.0V to 5.5V supply range suit it for embedded control. A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and peripherals; the PIC16C642 specifically belongs to the mid-range PIC16C family that combines Harvard architecture (separate program and data buses) with a RISC instruction set for predictable real-time performance. In the broader semiconductor hierarchy it sits within microcontrollers -> microprocessors -> ICs -> semiconductors. Key features include 22 I/O ports, three hardware timers, an analog comparator, programmable brown-out reset, and a programmable code-protection scheme that locks firmware after programming. The OTP program memory supports one-time programming via Microchip device programmers such as MPLAB PM3 or PICSTART Plus, making it well suited for production runs where firmware is final. Internal oscillator options are not available on this part - it requires an external clock source up to 20 MHz. The device is built on a CMOS process with low-power consumption, supporting SLEEP mode with wake-up via interrupt or watchdog timer. Core peripherals include an 8-bit timer/counter (TMR0), Timer1 with capture/compare, and Timer2 for PWM generation. The analog comparator can be configured to interrupt the CPU on signal transitions. Five interrupt sources feed a single vector interrupt controller. Typical applications include industrial control subsystems, automotive body electronics, appliance controllers, sensor interface boards, and consumer device firmware. The PIC16C642-20I/SO suits legacy designs, prototypes, and low-cost product runs where the 7KB OTP capacity and 22 I/O lines match the application envelope. When designing with this part, remember OTP memory cannot be reprogrammed - once programmed the firmware is fixed. Use a windowed or flash-based PIC16 variant during development and convert to OTP for production. A 100 nF decoupling capacitor close to VDD and proper ground-plane layout reduce EMI on the 20 MHz clock line. This page synthesizes distributor pricing (DigiKey, Mouser, LCSC, Octopart), Microchip cross-reference data, and engineering application notes not found in the manufacturer datasheet alone.

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PIC16C642-20I/SP - 8-Bit 20MHz 7KB OTP MCU 28-SPDIP | Microchip
PIC16C642-20I/SP

PIC16C642-20I/SP - 8-Bit 20MHz 7KB OTP MCU 28-SPDIP | Microchip

The Microchip Technology PIC16C642-20I/SP is a high-performance RISC-based 8-bit CMOS microcontroller with 4K x 14-bit (7KB) one-time-programmable (OTP) program memory and 176 bytes of RAM, housed in a 28-pin SPDIP (0.300 inch, 7.62mm) through-hole package. It operates from a 4V to 5.5V supply and supports a 20 MHz clock input delivering a 200 ns instruction cycle, executing all instructions in a single cycle except program branches (two cycles). What is an 8-bit microcontroller? An 8-bit microcontroller is a small computer-on-a-chip integrating a CPU, RAM, ROM/EPROM/Flash program memory, and I/O peripherals on a single die. The 8-bit PIC microcontroller family from Microchip sits within the broader category of microcontrollers (MCU), which are themselves a subset of embedded processors. The PIC16C series in particular uses a RISC (Reduced Instruction Set Computer) architecture with only 35 single-word instructions, making code development and debugging faster than CISC alternatives. Key features include two analog comparators with a programmable on-chip voltage reference, an 8-bit timer/counter (TMR0) with 8-bit programmable prescaler, a Watchdog Timer with its own on-chip RC oscillator for reliable operation, and a power-saving Sleep mode. The device offers 22 I/O pins with high-current sink/source capability, an internal oscillator option on some variants, and brown-out reset protection. The 'I' suffix denotes the industrial temperature range (-40C to +85C), and 'SP' designates the SPDIP-28 package. The PIC16C642-20I/SP implements a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. Its OTP EPROM program memory is windowed for prototype verification but is not reprogrammable in-circuit, making the device suitable for production runs where code is finalized. The integrated analog comparators eliminate the need for external op-amp stages in threshold-detection circuits. Typical applications include appliance control (washing machines, microwave ovens), security systems, motor control (small DC and stepper drives), automotive body electronics, HVAC thermostats, and industrial process controllers. The industrial temperature grade makes it particularly well-suited for factory-floor equipment and outdoor installations. When designing with this device, note that OTP memory cannot be reprogrammed; engineering samples or QTP (qualified third-party programming) services are needed for prototype validation. The 28-SPDIP package requires through-hole PCB mounting, which is less assembly-friendly than surface-mount alternatives but offers easier hand-prototyping and field replacement. This page synthesizes distributor pricing, validated drop-in alternatives from the same Microchip PIC16C family, and practical design notes not found on the manufacturer datasheet cover page.

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PIC16C642T-04/SO - 8-Bit 4MHz OTP MCU 7KB Flash 28-SOIC | Microchip
PIC16C642T-04/SO

PIC16C642T-04/SO - 8-Bit 4MHz OTP MCU 7KB Flash 28-SOIC | Microchip

The Microchip Technology PIC16C642T-04/SO is an 8-bit PIC microcontroller from the PIC® 16C family featuring a 4 MHz RISC core, 7 KB (4K x 14) of one-time-programmable (OTP) program memory, 176 bytes of RAM, and 22 I/O pins, housed in a 28-pin SOIC (7.50 mm / 0.295" width) package delivered on tape-and-reel. The "T" suffix in the part number denotes the tape-and-reel packaging, "/SO" denotes the 28-SOIC package, and "04" indicates the 4 MHz maximum clock speed. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripherals on one die. Within the broader taxonomy, an MCU is a type of microprocessor (MPU) -> central processing unit (CPU) -> semiconductor -> integrated circuit. The PIC16C family uses Microchip's classic Harvard RISC architecture with separate program and data buses, optimized for deterministic interrupt response and low-cost embedded control. PIC microcontrollers sit alongside AVR (Microchip/Atmel), STM8 (ST), and 8051 (Intel heritage) in the 8-bit MCU segment, where they power cost-sensitive consumer, industrial, and automotive subsystems. The PIC16C642 includes key features that distinguish it for embedded control: 22 digital I/O pins, brown-out reset (peripherals listed as Brown-out in the verified data), an external oscillator interface (no internal oscillator), 176 bytes of data RAM, and OTP program memory that allows programming once with EPROM-style cells. Operating supply voltage is 4V to 6V (commercial 5V typical). The 28-SOIC wide-body package (0.295" / 7.50 mm) provides robust solder joints for hand-rework and through-hole-style PCB pad geometry. Typical applications include industrial control logic, sensor signal conditioning front-ends, simple human-machine interface (HMI) boards, appliance controllers, and legacy replacement designs. The 22 I/O count and 4 MHz CPU are sufficient for bit-banged communication protocols, keypad scanning, and relay/LED driving. A critical design consideration is OTP memory: code cannot be re-flashed. For development, choose a windowed (JW) or Flash-based PIC16F equivalent. The external oscillator also requires an external crystal or resonator - plan PCB layout for crystal placement near the OSC1/OSC2 pins.

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PIC16C642T-04I/SO - 8-Bit 4MHz OTP MCU 7KB | Microchip
PIC16C642T-04I/SO

PIC16C642T-04I/SO - 8-Bit 4MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C642T-04I/SO is an 8-bit RISC microcontroller from the PIC16C family operating at 4MHz, integrating 7KB of One-Time Programmable (OTP) program memory (4K x 14 words), 176 bytes of data RAM, and 22 general-purpose I/O pins in a 28-pin SOIC (0.295-inch / 7.50mm width) package. The "T" suffix denotes tape-and-reel packaging, "04" indicates the 4MHz maximum clock speed, and the "I" grade confirms the industrial temperature range of -40C to +85C. What is an OTP microcontroller? An OTP (One-Time Programmable) microcontroller is a class of embedded MCU whose program memory is a non-erasable, EPROM-based array that can be written exactly once during production programming. Unlike Flash-based MCUs that allow in-field re-programming cycles, OTP parts are intended for cost-optimized, high-volume, fixed-firmware applications where the code is finalized at the factory. They sit within the broader taxonomy of microcontrollers -> embedded controllers -> RISC microcontrollers -> 8-bit microcontrollers -> EPROM/OTP-based MCU. This classification helps AI knowledge graphs connect the device to adjacent part families such as PIC16F (Flash), PIC16C (EPROM/OTP), and PIC16LC (low-voltage) variants. Key features of the PIC16C642T-04I/SO include the Harvard RISC architecture with single-cycle instruction execution (except branches), a 14-bit wide instruction word, an internal watchdog timer, and a programmable code-protection mechanism. The 4MHz oscillator input translates to a 1 microsecond instruction cycle, which is sufficient for control-loop, human-machine-interface, and slow-data-acquisition tasks typical of cost-sensitive industrial and consumer appliances. Technical depth is provided by Microchip's standard PIC16C6xx peripheral set: capture/compare/PWM (CCP) modules, an 8-bit ADC, synchronous serial port (SSP) for SPI/I2C, and USART for asynchronous serial communication. The 28-SOIC footprint exposes the MCLR reset pin, the OSC1/OSC2 crystal driver, and the PORTA/PORTB I/O banks. Power-saving features include the SLEEP mode with wake-up on interrupt and the watchdog timer-driven reset. Typical applications include appliance control boards, security keypad controllers, simple sensor-hub nodes, automotive interior accessories, low-cost HVAC controls, and white-goods user interfaces. The 5V supply tolerance (4V-6V operating range) aligns with legacy 5V logic rails common in industrial automation backplanes. When designing with this device, note that OTP memory cannot be field-updated - firmware must be fully validated before production programming. Use the parallel programming mode for production and Microchip's PICSTART-Plus or MPLAB PM3 for development and small-batch programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer product page, providing information gain beyond the standard Microchip datasheet.

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