Circuitos integrados

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

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

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

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

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

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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PIC16C642T-10/SO

PIC16C642T-10/SO - 8-Bit 10MHz OTP MCU 28-SOIC | Microchip

The Microchip Technology PIC16C642T-10/SO is a member of the PIC16C6x family of 8-bit CMOS microcontrollers based on the enhanced PIC18C0® RISC architecture, housed in a 28-pin SOIC (SO) package with 7 KB (4K x 14 words) of OTP program memory, 176 bytes of RAM, and operating at up to 10 MHz. The 'T' suffix indicates Tape & Reel packaging, the '-10' denotes the 10 MHz maximum clock frequency, and '/SO' specifies the 300-mil wide surface-mount SOIC package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, I/O peripherals, and timers into one IC. The PIC16C6x family sits in the mid-range PIC hierarchy (PIC10/12/14/16/18 families), targeting applications more demanding than baseline PICs but lower-cost than PIC18/dsPIC parts. PIC16C6x devices use One-Time-Programmable (OTP) EPROM, meaning each unit is programmed once at production or in-system, making them cost-effective for high-volume products rather than field reprogramming. Key features include a 10 MHz instruction-cycle oscillator (200 ns instruction time), 22 I/O pins, three timers (TMR0, TMR1, TMR2), a 5-channel 8-bit ADC, a Universal Synchronous Asynchronous Receiver Transmitter (USART), and a watchdog timer. The PIC16C642 specifically features an internal brown-out reset, 8-bit PWM output, and 176-byte data RAM. Operating voltage spans 4.0 V to 6.0 V, making it compatible with TTL and CMOS logic levels, and it is rated for 0 °C to +70 °C commercial operating temperature. The PIC16C642 uses a Harvard architecture with separate program and data buses, a 14-bit instruction word, and a hardware multiplier-free design that delivers deterministic interrupt latency. The enhanced instruction set provides 35 single-cycle instructions, allowing most operations to complete in one instruction cycle. Internal peripherals are mapped to specific I/O pins via device configuration fuses at programming time. Typical applications include industrial control logic, appliance controllers, sensor signal conditioning front-ends, automotive body electronics (non-safety), simple user-interface controllers, and low-cost consumer embedded products. The OTP memory suits high-volume production where firmware is finalized at IC programming. When designing with PIC16C642T-10/SO, ensure your firmware is fully validated before programming because OTP cannot be reprogrammed. Add proper decoupling (0.1 µF + 10 µF bulk) near the VDD pin and keep the OSC1/OSC2 traces short for stable clocking. MCLR must be tied high via a pull-up resistor in normal operation. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found on any single manufacturer or distributor page, providing information gain beyond the PIC16C642 datasheet.

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PIC16C642T-20E/SO

PIC16C642T-20E/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C642T-20E/SO is a member of the PIC16C family of 8-bit CMOS microcontrollers featuring a RISC core, 7KB (4K x 14) of One-Time Programmable (OTP) program memory, 176 bytes of SRAM, and 22 I/O lines, all integrated into a 28-pin SOIC package. It executes instructions at up to 20MHz, delivers a typical instruction cycle time of 200ns, and operates from a 5V supply. A microcontroller (MCU) is a single-chip integrated circuit that combines a CPU core, non-volatile program memory, working RAM, and a configurable set of peripheral modules. Within the broader semiconductor hierarchy, an MCU belongs to the class of programmable logic devices and is itself a subclass of microcomputers designed for embedded control. The PIC16C family is the mid-tier of Microchip's original PIC16C 8-bit portfolio, sitting between the PIC16C5x baseline and the PIC16C7x higher-performance parts. The PIC16C642T-20E/SO integrates an enhanced capture/compare/PWM (ECCP) module, an 8-bit analog-to-digital converter (ADC) with up to 8 input channels, a USART for asynchronous serial communication, and a synchronous serial port that supports SPI and I2C master/slave operation. The device also offers programmable brown-out reset, power-on reset, and a watchdog timer with its own on-chip RC oscillator for enhanced system reliability. Its Harvard architecture separates program and data paths, enabling simultaneous fetch and write operations that yield predictable, deterministic execution timing. Typical applications include industrial control and instrumentation, automotive body and chassis subsystems, smart sensor conditioning nodes, appliance controllers, and remote data acquisition nodes. Its small footprint, wide operating temperature range, and OTP programmability make it especially attractive for low-volume production runs where mask-ROM commitment is not economical. When designing with this part, note that the OTP memory means firmware cannot be field-updated; verify code before programming. Use the in-circuit debugger header or ICD pins for development, and reserve decoupling on VDD/VSS within 1 cm of the package. The PIC16C642T-20E/SO is supplied in tape and reel packaging for high-volume surface-mount assembly. This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16C family and select competitors, and practical design notes that go beyond the manufacturer datasheet to accelerate design-in for engineers.

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PIC16C64A-04/L

PIC16C64A-04/L - 8-bit OTP MCU, 4MHz, 3.5KB | Microchip

The Microchip Technology PIC16C64A-04/L is an 8-bit CMOS microcontroller from the PIC16C family featuring a 4MHz maximum clock speed, 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, and 128 bytes of RAM. It is supplied in a 44-pin PLCC (Leaded Chip Carrier) package with 33 digital I/O pins. This part is an industrial-temperature windowed/ceramic variant of the PIC16C64A core, optimized for embedded control applications requiring reliable 8-bit processing with deterministic RISC architecture. Background: An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, memory (ROM/RAM), and programmable I/O peripherals. Within the MCU taxonomy, the PIC16C64A belongs to the PIC16C family, which in turn falls under the broader category of microcontrollers -> embedded processors -> integrated circuits. The PIC architecture uses a Harvard-design RISC CPU with 35 single-word instructions, making it well suited for cost-sensitive, deterministic real-time control. The OTP suffix means the program memory can be written once (mask ROM-like behavior at low NRE cost), making PIC16C64A variants appropriate for medium-volume production. Key features include a high-performance RISC CPU executing most instructions in a single clock cycle, 4MHz operation at 4V-5.5V supply, 33 I/O pins supporting digital I/O, two 8-bit timers and one 16-bit timer/counter, a USART serial port, and low-power operation (less than 2mA typical at 5V/4MHz, with sleep-mode currents under 1uA typical). The device offers multiple interrupt sources and a hardware watchdog timer. Architecturally, the PIC16C64A-04/L uses a Harvard memory structure with separate program and data buses, enabling simultaneous instruction fetch and operand access. Its RISC engine performs most instructions in one instruction cycle (4 oscillator clocks), giving a 4MHz oscillator a 1 MIPS instruction throughput. The wide operating voltage (2.5V-6.0V range across the family) and integrated peripherals (USART, timers, watchdog, capture/compare/PWM) eliminate external glue logic in typical embedded designs. Typical applications include industrial process control, motor control front-ends, automotive body electronics, sensor signal conditioning, keypad/display interfaces, embedded serial-communication nodes, and legacy replacement of older 8051 or HC11 designs where software IP exists for PIC assembly. The windowed ceramic L-package also serves engineering development and prototype builds. Design consideration: When migrating from PIC16C64A-04/L to a flash-memory equivalent (PIC16F877A or PIC16F877), note the pinout is largely compatible but the program memory technology differs. Designers should plan for ICP/ICD programming headers and decoupling (100nF + 10uF) close to VDD/VSS pins to support the 33 simultaneously-switching I/Os. This page synthesizes distributor pricing, OTP vs flash alternatives, and practical design notes beyond what the manufacturer datasheet alone provides.

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PIC16C64A-04/P

PIC16C64A-04/P - 8-Bit 4MHz OTP MCU, 3.5KB, 40-PDIP | Microchip

The Microchip Technology PIC16C64A-04/P is an 8-bit CMOS OTP (one-time programmable) microcontroller in the PIC16C6X mid-range family, operating at up to 4 MHz and housed in a 40-pin PDIP (plastic DIP, 0.600 inch / 15.24 mm) through-hole package. According to the manufacturer datasheet, it integrates 3.5 KB of program memory (2K x 14 words), 128 bytes of RAM, 33 digital I/O lines, and the classic PIC16C RISC core with only 35 single-word instructions to learn. The '04' suffix denotes a 4 MHz maximum clock, while the 'A' revision is an enhanced successor to the original PIC16C64 with improved electrical characteristics and a wider operating voltage range. A PIC microcontroller (Programmable Interface Controller) is a family of 8-, 16-, and 32-bit RISC-based microcontrollers originally developed by Microchip Technology. Within the PIC taxonomy, the PIC16C64A belongs to the mid-range (14-bit instruction word) PIC16C sub-family, which sits between the baseline PIC10/12/16 family and the high-performance PIC17C/PIC18C series. PIC MCUs are categorized as 8-bit microcontrollers (data path), Harvard architecture (separate program and data buses), and are widely used in embedded control due to their deterministic instruction timing, low cost, and ease of programming. Key features of the PIC16C64A-04/P include a fully static CMOS design, wide operating voltage range up to 6.0 V, and very low power consumption — typically 15 uA at 5 V / 4 MHz and as low as 1 uA at 3 V / 32 kHz, making it well suited for battery-backed applications. The device supports both commercial and industrial temperature ranges, includes an integrated Watchdog Timer with its own on-chip RC oscillator, and offers programmable code protection. Peripheral highlights include a Capture/Compare/PWM (CCP) module, a synchronous serial port (SSP) configurable for SPI or I2C, an 8-bit timer/counter (TMR0) with an 8-bit prescaler, a 16-bit timer/counter (TMR1), and an 8-bit timer/counter (TMR2) with period register. Architecturally, the PIC16C64A uses a 14-bit instruction word with a two-stage pipeline, providing single-cycle instruction execution except for program branches which take two cycles. Its Harvard architecture separates the program bus (14 bits wide) from the data bus (8 bits wide), enabling simultaneous instruction fetch and operand read. The Brown-out Reset (BOR) circuit holds the MCU in reset when VDD falls below a programmable threshold, protecting Flash/OTP integrity. An in-circuit debugger (ICD) is supported via the RB6/RB7 pins on most PIC16C6X parts. Typical applications include industrial control panels, automotive body electronics (non-safety), appliance control boards, security system panels, and low-end sensor hubs. The 33 I/O pins comfortably drive multiplexed LED displays, keypads, and relay drivers. When designing with the PIC16C64A-04/P, note that the OTP memory cannot be erased or rewritten — use the PIC16F64 or PIC16C65B flash-based equivalent for prototypes. Also ensure your programmer is set to the enhanced PIC16C6XA configuration; the legacy PIC16C64 settings will not program this device correctly. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16C6X family, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16C64A-04/PQ

PIC16C64A-04/PQ - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C64A-04/PQ is an 8-bit CMOS RISC microcontroller from the PIC16C family, featuring 4 MHz operation, 3.5 KB (2K x 14) of one-time-programmable (OTP) program memory, 128 bytes of RAM, and 33 digital I/O pins, all housed in a 44-pin MQFP (10x10 mm) surface-mount package. Its RISC architecture executes 200 ns single-cycle instructions from only 35 single-word instructions, achieving high throughput at low clock rates, while integrated peripherals include Brown-out Detect/Reset, Power-On Reset (POR), Pulse-Width Modulation (PWM), and a Watchdog Timer (WDT). A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (ROM/RAM), and programmable I/O peripherals on one die, enabling embedded control in applications ranging from washing machines to automotive ECUs. PIC microcontrollers, originally introduced by General Instrument and popularized by Microchip, sit within the broader taxonomy: microcontroller -> embedded controller -> semiconductor IC, and they specifically implement a Harvard RISC architecture with separate program and data buses. Key features of the PIC16C64A-04/PQ include 8-bit data width, 4 MHz maximum clock, 33 I/O pins across multiple ports, synchronous serial port (SSP) supporting SPI and I2C, parallel slave port, two 8-bit timer/counters and one 16-bit timer/counter, and a 14-bit instruction word. The OTP program memory (2K x 14 = 3.5 KB) is one-time programmable and not re-programmable in-circuit, making this part suitable for production runs where field firmware updates are not required. The 04 speed grade specifies a 4 MHz oscillator range, and the PQ suffix denotes the 44-pin Metric Quad Flat Pack (MQFP) package. The industrial/commercial operating temperature range typically covers 0C to +70C for the commercial grade (-04). Because this part is marked "Not Recommended for new designs" by Microchip and a newer version (PIC16C65B) is suggested as a replacement, long-term availability should be confirmed before new design-in. Typical applications include industrial control, appliance control, automotive subsystems (pre-AEC-Q100 era), low-end consumer electronics, and general-purpose embedded logic replacement. Designers should verify the specific OTP blank behavior, oscillator configuration (RC/HS/XT/LP), and programming specifications against the manufacturer datasheet before committing to production. When designing with this device, ensure the MCLR reset circuit, oscillator loading capacitors, and decoupling layout follow the datasheet reference design. Power-supply rise time and Brown-out Reset (BOR) trip points must be considered for reliable startup in noisy environments. Designers should plan ahead for end-of-life sourcing as Microchip has explicitly tagged this part as NRND. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16C family, and practical design notes - information that is not assembled in the manufacturer datasheet alone.

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PIC16C64A-04/PT

PIC16C64A-04/PT - 8-bit OTP MCU 4MHz 3.5KB TQFP-44 | Microchip

The Microchip Technology PIC16C64A-04/PT is an 8-bit One-Time-Programmable (OTP) CMOS microcontroller from the PIC16C family, delivering 4 MHz CPU performance, 3.5 KB (2K x 14) of program memory, 128 bytes of RAM, and 33 digital I/O pins in a 44-pin TQFP surface-mount package. The "/PT" suffix designates the TQFP-44 package, while "-04" denotes the 4 MHz maximum oscillator frequency grade. According to the Microchip PIC16C64A datasheet, the device integrates a RISC instruction set, 14-bit wide instructions, an 8-level hardware stack, and a 20-year program retention window. An OTP microcontroller is a non-erasable, field-programmable MCU that retains firmware for the device lifetime after one programming pass. Within the broader taxonomy, the PIC16C64A sits in the 8-bit MCU -> microcontroller -> embedded controller -> semiconductor hierarchy. PIC16C devices use CMOS fabrication for low-power operation (typically < 2 mA active at 4 MHz, < 1 µA standby) and execute most instructions in a single 200 ns instruction cycle at 4 MHz, making them well-suited to deterministic real-time control. Key features include 33 I/O pins with individual direction control, a four-channel 8-bit analog-to-digital converter (ADC) with multiple reference options, three timer/counters (Timer0 with programmable prescaler, Timer1 16-bit, Timer2 with 8-bit period register), a synchronous serial port (SSP) supporting SPI and I2C master/slave, a parallel slave port for external bus expansion, and a watchdog timer with on-chip RC oscillator. The PIC16C64A also provides multiple oscillator modes including RC, XT, HS, and LP, plus an in-circuit serial programming (ICSP) interface for field updates before the OTP window closes. The architecture centers on a Harvard-style RISC CPU with separate program and data buses, a 14-bit program word, and a small instruction set that allows most operations to complete in one instruction cycle. Compared with earlier PIC16C6x parts, the "A" revision refined brown-out detect behavior and refined the ADC sampling path. The PIC16C64A is marked "Not Recommended for new designs" on the Microchip product page, with PIC16C65B cited as the newer version to consider. Typical applications include industrial control front-ends, appliance control boards, motor control signal conditioning, instrumentation sensor interfaces, and embedded control in legacy factory automation. The wide operating voltage range (typically 3.0 V to 6.0 V) and the 33 I/O pins support mixed analog/digital designs where the PIC16C64A acts as a glue controller between sensors, actuators, and a host MCU. When designing with this part, calculate worst-case active and sleep current from the datasheet curves, place decoupling capacitors as close as possible to VDD/VSS pins, and confirm that the chosen oscillator mode matches the external crystal or resonator. For new designs, evaluate the recommended successor (PIC16C65B family) before committing. This page consolidates datasheet specifications, distributor pricing, drop-in same-package alternatives, and practical design notes not assembled on the manufacturer datasheet alone.

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PIC16C64A-04E/PQ

PIC16C64A-04E/PQ - 8-Bit 4MHz OTP MCU, 33 I/O, 44-MQFP | Microchip

The Microchip Technology PIC16C64A-04E/PQ is an 8-bit RISC CMOS one-time-programmable (OTP) microcontroller built on the PIC16C core, offering 4MHz maximum operating frequency, 3.5KB (2K x 14) of EPROM program memory, 128 x 8 bytes of RAM, and 33 digital I/O pins in a 44-pin Metric QFP (MQFP, 10x10 mm) package. According to the manufacturer product page, this device is part of the PIC16C6X family and is flagged "Not Recommended for new designs," with Microchip pointing to the PIC16C65B as the newer replacement for active designs and re-spins. An 8-bit OTP microcontroller (One-Time-Programmable Microcontroller) is a small, low-cost computer-on-a-chip that executes a fixed instruction set on 8-bit-wide data. In the embedded-systems taxonomy, it sits beneath general-purpose microcontrollers, above simple logic controllers, and within the broader class of microcontrollers -> MCUs -> semiconductors. OTP means the program memory can be written exactly once, after which the bit pattern is permanent; this makes OTP MCUs attractive for high-volume, cost-sensitive consumer and industrial products where firmware is stable and field re-programmability is not required. Key features of the PIC16C64A-04E/PQ include a 14-bit wide instruction word, 35 single-word instructions, 200ns instruction execution at 4MHz (5V), an 8-level hardware stack, and integrated peripherals such as Brown-out Detect/Reset, Power-on Reset (POR), Pulse-Width Modulation (PWM), and a Watchdog Timer (WDT). Serial connectivity is supported through I2C and SPI ports. The PIC16C core's RISC architecture with a single-cycle instruction fetch keeps deterministic timing simple for real-time control loops. Architecturally, the device is fully static CMOS, allowing the clock to be slowed to DC for low-power standby, and supports a 4V to 6V operating voltage range. The 33 I/O pins are grouped into ports for easy interfacing with switches, LEDs, keypads, and small sensor arrays; PWM and WDT are integrated to remove external timing components. Typical applications include appliance control, HVAC user-interface panels, simple sensor front-ends, automotive body controllers (predecessor generation), industrial operator panels, and white-goods motor control. The compact 44-MQFP footprint also makes it suitable for retrofit and form-factor-constrained boards where the PIC16 ecosystem is already deployed. When designing with this part, evaluate the supply-rail decoupling strategy (0.1 uF ceramic at VDD/VSS pairs), confirm the I/O sink/source budget against the load, and verify the oscillator configuration matches the in-circuit crystal or resonator. For new designs, prefer the recommended successor PIC16C65B or current-generation PIC16F1xxx Flash MCUs to avoid lifetime-buy pressure on this OTP device. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not available in the bare manufacturer datasheet, giving procurement and engineering teams a single source of truth for lifecycle, fit, and risk assessment.

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PIC16C64A-04E/PT

PIC16C64A-04E/PT - 8-Bit OTP MCU, 3.5KB EPROM, 4MHz, TQFP-44 | Microchip

The Microchip Technology PIC16C64A-04E/PT is an 8-bit RISC CMOS microcontroller based on the PIC16 mid-range architecture, offering 3.5KB (2K x 14) of one-time-programmable (OTP) program memory and 128 bytes of RAM in a 44-pin TQFP (10x10mm) package. It executes most instructions in a single 200 ns cycle at 4 MHz, providing 5 MIPS throughput, and integrates 33 digital I/O lines grouped into five ports (PORTA-PORTE) with programmable direction registers. An 8-bit PIC microcontroller is a Harvard-architecture, RISC-based CMOS device in which program and data memories use separate buses. This separation allows instruction fetch and operand read to occur in the same cycle, giving PIC MCUs their characteristic deterministic execution time. Within the broader taxonomy, the PIC16C64A belongs to the PIC16 family of mid-range microcontrollers, which sits between the baseline PIC10/12/16 families and the high-end PIC18 family, and ultimately under the umbrella of embedded microcontrollers -> microcontrollers -> integrated circuits. The OTP (one-time-programmable) program memory uses EPROM cells, distinct from the flash-based PIC16F series. Key specifications include an external oscillator interface supporting up 4 MHz (4 in the suffix indicates the maximum frequency), an operating voltage range of typically 2.5 V to 6.0 V, and a brown-out reset / power-on reset subsystem. The device integrates a Synchronous Serial Port (SSP) supporting SPI and I²C master/slave modes, a USART for asynchronous serial communication, and three hardware timers (Timer0, Timer1, Timer2) suitable for event counting, input capture, output compare, and PWM generation. Peripherals include a 5-channel 8-bit ADC and a watchdog timer with its own on-chip RC oscillator. The PIC16C64A-04E/PT is well suited to embedded control applications that demand deterministic interrupt latency, simple peripheral set, and legacy code reuse. Typical use cases include industrial control logic, sensor interfacing, motor drive sequencing, and brown-field designs maintaining compatibility with the classic PIC16 mid-range instruction set. A key design consideration when using the PIC16C64A-04E/PT is OTP program memory: once programmed, the device cannot be re-programmed. Engineers should use a windowed (JW) sample for prototype iteration and reserve the OTP -04E/PT for production. The 'E' suffix denotes the industrial temperature grade (-40°C to +125°C). Microchip recommends migrating to PIC16F877A for new designs, as the PIC16C64A has been replaced by PIC16C65B per the manufacturer product page. This page synthesizes drop-in replacement alternatives, parametric comparison data, and application context not aggregated in any single manufacturer or distributor source.

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PIC16C64A-04I/L

PIC16C64A-04I/L - 4MHz 8-Bit OTP MCU 3.5KB | Microchip PLCC-44

The Microchip Technology PIC16C64A-04I/L is an 8-bit CMOS microcontroller in the PIC16C family, featuring 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 33 digital I/O pins in a 44-pin PLCC package (16.59 x 16.59 mm). The device operates at 4 MHz and supports a supply voltage of 4V to 5.5V over the industrial temperature range of -40C to +85C. What is an 8-bit microcontroller? An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash/OTP), data RAM, and peripheral interfaces on one die. The PIC16C family from Microchip uses a RISC (Reduced Instruction Set Computer) architecture with 35 single-word instructions, where all instructions execute in one instruction cycle except program branches (two cycles). The PIC16C64A sits in the hierarchy: 8-bit MCU -> PIC16C family -> PIC16C6X sub-family -> peripheral-rich members with parallel ports and capture/compare/PWM. Key features of the PIC16C64A-04I/L include 33 I/O pins, a 4 MHz maximum clock, three timer/counter modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communication, a capture/compare/PWM (CCP) module, and an 8-bit ADC with up to 8 channels. The wide operating voltage range and low power consumption (typically 15 uA at 5V/4 MHz and 1 uA at 3V/32 kHz) make it suitable for battery-powered and industrial applications. The PIC16C64A uses CMOS EPROM/ROM technology with a fully static design, allowing the clock to be stopped without losing register state. The Harvard architecture separates program and data buses, enabling instruction fetch and operand access in a single cycle. The 8-level hardware stack and interrupt controller handle nested subroutine calls and real-time events. Typical applications include industrial control systems, automotive body electronics, sensor signal conditioning, simple motor control via PWM, smart sensor nodes, and embedded data acquisition. The PIC16C64A is well suited to applications needing moderate I/O count, integrated analog, and reliable serial communication in a through-hole-friendly PLCC package. When designing with this part, note that OTP memory can be programmed only once; for engineering development, use the windowed CERDIP variant. The PLCC-44 package supports both socketed and surface-mount assembly, useful for legacy systems that require field-replaceable MCUs. This page synthesizes distributor pricing, drop-in alternatives within the PIC16C6X family, and practical design notes drawn from the manufacturer datasheet and Octopart cross-references.

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PIC16C64A-04I/P

PIC16C64A-04I/P - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip PIC16C64A-04I/P is an 8-bit CMOS OTP (One-Time Programmable) microcontroller from the PIC16C family, delivering 4 MHz maximum operating frequency, 3.5 KB (2K x 14) of program memory, and 128 bytes of RAM in a 40-pin PDIP (Plastic DIP) industrial-grade package. The -04I/P suffix denotes the 4 MHz speed grade, industrial temperature range (-40C to +85C), and PDIP through-hole package form factor. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC16C family uses a RISC (Reduced Instruction Set Computer) architecture with only 35 single-word instructions, making it one of the easiest 8-bit MCU families to learn. MCUs sit within the broader embedded-computing hierarchy: microcontroller -> embedded processor -> semiconductor IC. The OTP variant means the program memory is user-programmable exactly once via a device programmer, then becomes read-only, making it suitable for low-cost, high-volume production where firmware is finalized. Key features include 33 digital I/O pins, an 8-bit timer/counter, a 16-bit timer/counter with capture/compare/PWM, an analog comparator, and a synchronous serial port (SSP) supporting SPI and I2C master/slave modes. The PIC16C64A's RISC pipeline executes most instructions in a single instruction cycle (200 ns at 20 MHz, 1 us at 4 MHz), giving deterministic timing suitable for real-time control loops. Power consumption is optimized through sleep mode with wake-up via interrupt or watchdog. Typical applications include industrial control systems, appliance controllers, automotive body electronics, simple sensor interfaces, and replacement of discrete logic circuits. The 40-pin PDIP package remains popular for through-hole prototyping, breadboarding, and educational platforms where socketed or hand-soldered parts simplify development. Industrial-grade temperature qualification supports factory-floor deployment. The newer Microchip PIC16F877A is the recommended Flash-memory successor with the same 40-pin pinout, in-circuit debugging, and 10x more program memory. The legacy PIC16C64A is generally used today only for legacy maintenance or exact BOM-replication tasks where OTP is acceptable. Engineers should confirm long-term availability before designing in this part. This page consolidates distributor pricing, drop-in compatible PIC16C alternatives, and practical design considerations not found in the manufacturer datasheet alone, helping engineers evaluate whether PIC16C64A-04I/P fits their application or whether a Flash-based successor is more appropriate for new designs.

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PIC16C64A-04I/PQ

PIC16C64A-04I/PQ - 4MHz 8-Bit MCU, 3.5KB OTP, MQFP-44 | Microchip

The Microchip Technology PIC16C64A-04I/PQ is an 8-bit CMOS RISC microcontroller from the PIC16CXX mid-range family, featuring 4 MHz maximum clock speed, 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 33 digital I/O lines, housed in a 44-pin Metric Quad Flat Pack (MQFP-44, 10x10 mm) package with industrial temperature grade (-40C to +85C). An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals on one die. Within the broader taxonomy, the PIC16C64A belongs to the RISC microcontroller class -> embedded microcontroller -> microcomputer -> integrated circuit. The 8-bit bus width means data is processed 8 bits at a time; the Harvard-style separate program/data buses accelerate instruction fetch, while the RISC instruction set reduces each instruction to a single 200 ns word at 20 MHz. Key features include 35 single-word instructions, all executing in one instruction cycle except program branches (two cycles), a programmable code protection bit, a watchdog timer with on-chip RC oscillator, and four counter/timer modules. The PIC16C64A integrates a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communication, a 10-bit multi-channel analog comparator subsystem, and a Capture/Compare/PWM (CCP) module. The device operates from 2.5 V to 6.0 V across the industrial temperature range and supports in-circuit serial programming (ICSP) when used with the appropriate programming hardware. The OTP memory is one-time programmable, making this part best suited for mature production designs where firmware is fixed and high-volume programming is performed at the factory. For in-the-field firmware updates, Flash-based PIC16F equivalents are recommended. Typical applications include industrial control systems, automotive body and chassis subsystems, consumer appliance controllers, and embedded sensor interfaces. The wide operating voltage range and robust I/O count also make the PIC16C64A a fit for remote sensor data loggers and human-machine interface (HMI) panels where deterministic real-time response is critical. When designing with this part, note that OTP memory cannot be reprogrammed in-circuit; engineers should plan for a Flash-based PIC16F64A or PIC16F877A migration path during prototyping. A decoupling capacitor of 0.1 uF placed within 5 mm of VDD is recommended, and unused I/O pins should be configured as outputs low to minimize power consumption. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, enabling engineers to make faster BOM decisions for legacy or industrial systems.

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PIC16C64A-04I/PT

PIC16C64A-04I/PT - 8-bit OTP MCU, 3.5KB, 33 I/O | Microchip

The Microchip Technology PIC16C64A-04I/PT is an 8-bit CMOS OTP (One-Time Programmable) microcontroller from the PIC16C family, delivering 4 MIPS performance at 4 MHz and housed in a 44-pin TQFP package. The device integrates 3.5 KB of program memory (2K x 14), 128 bytes of RAM, 33 digital I/O pins, and a rich peripheral set including three timers, a USART, a Capture/Compare/PWM module, and a parallel slave port. It operates across a 2.5V to 6.0V supply range and is specified over the industrial -40C to +85C temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and peripherals on one die. Within the broader taxonomy, MCUs belong to microcontrollers, then embedded processors, then semiconductors. The PIC16C family specifically targets cost-sensitive, low-power, deterministic real-time control tasks and is known for its RISC-like 35-instruction set, single-cycle execution at 4 MHz, and Harvard architecture that separates program and data buses. PIC16C64A-04I/PT fits this niche as an intermediate-density device with enhanced I/O and serial communication capability. Key features of the PIC16C64A-04I/PT include its 33 digital I/O lines distributed across multiple ports, 8-channel 8-bit A/D converter with external reference option, two 8-bit timers plus one 16-bit timer with prescaler, USART for asynchronous and synchronous serial communication, and an 8-bit parallel slave port for external bus interfacing. The OTP memory architecture allows factory or prototype programming, which is cost-effective for low-volume or mature products. Internally, the device uses a 14-bit instruction word, an 8-bit data path, and a two-stage pipeline, providing predictable single-instruction-cycle latency (250 ns at 4 MHz) for time-critical control loops. The integrated Watchdog Timer with its own on-chip RC oscillator adds fault-recovery capability, and the Power-on Reset (POR) and Brown-out Reset (BOR) circuits simplify power-supply design. The device supports in-circuit serial programming (ICSP) via two pins. Typical applications include industrial control panels, appliance control boards, automotive body electronics (non-safety), sensor interface modules, and legacy embedded systems that have already been qualified on the PIC16C architecture. The wide 2.5-6.0V supply tolerance allows direct connection to 5V or 3.3V rails, and the 33 I/O count suits systems with multiple digital sensors, keypads, or LED arrays. When designing with this part, note that the 'I' suffix denotes the industrial temperature range and the 'PT' suffix denotes the 44-pin TQFP package. The 4 MHz speed grade is appropriate for systems that do not need the higher 20 MHz capability. Because this is an OTP device, code is permanently locked after programming; consider PIC16F64 (Flash) or PIC16C65B for reprogrammable variants during development. This page synthesizes distributor stock levels, parametric comparisons, and practical design notes for the PIC16C64A-04I/PT, providing engineering context beyond the manufacturer datasheet.

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PIC16C64A-10/L

PIC16C64A-10/L - 8-Bit 10MHz OTP MCU 3.5KB 44-PLCC | Microchip

The Microchip Technology PIC16C64A-10/L is an 8-bit CMOS microcontroller from the PIC16C6X family operating at 10 MHz, integrating 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 33 digital I/O pins in a 44-pin PLCC (J-lead, windowed ceramic) package. It uses a high-performance RISC CPU core with only 35 single-word instructions, fully-static operation, and supports DC-10 MHz clock input with a 4V-6V supply voltage range. The OTP program memory and ceramic windowed package allow verification via UV erasure during development, although production parts ship with the window sealed. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals. The PIC16C64A belongs to the 8-bit MCU category (bit-width: 8-bit), specifically the legacy OTP/EPROM-based sub-family, sitting within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16C6X family uses a Harvard architecture with separate program and data buses, enabling single-cycle instruction execution for most opcodes and deterministic timing for embedded control loops. The 35-instruction RISC instruction set minimizes code complexity and learning curve, while 14-bit-wide instructions improve code density over 12-bit PIC cores. Key differentiating features include 33 I/O pins supporting direct LED or relay drive (each pin can source/sink up to 25 mA), two 8-bit and one 16-bit timer/counter modules, a synchronous/asynchronous serial port (USART/SCI), a parallel slave port (PSP) for external bus interfacing, and a 5-channel 8-bit Analog-to-Digital Converter (ADC) on the PIC16C65A sibling (note: the PIC16C64A does not include ADC). The wide operating voltage (2.5V-6.0V) and low power consumption (15 uA typical at 5V/4 MHz, 1 uA typical at 3V/32 kHz) make this device suitable for both battery-powered and line-powered applications. The PIC16C64A architecture uses CMOS EPROM technology with a fully-static design (clock can be stopped without losing state), brown-out reset protection, watchdog timer with on-chip RC oscillator for reliable operation, and a programmable code-protection mechanism for IP security. This mature mid-range PIC architecture has been deployed for decades in industrial control, automotive subsystems, and consumer appliances. Typical applications include industrial control systems, motor control (low-side drive), sensor interfaces with USART communication, simple HMI panels, and legacy embedded products. The PIC16C64A is rated NRND (Not Recommended for New Designs); Microchip recommends the PIC16C65B or PIC16F877A for new designs, but the PIC16C64A remains widely available for maintenance of installed equipment. When designing with this device, designers should note that the OTP memory cannot be reprogrammed in-circuit - programming must be done with a device programmer before insertion. The ceramic windowed package allows UV erasure for development cycles. Decoupling capacitors (0.1 uF ceramic) should be placed close to VDD/VSS pins, and the MCLR reset pin should be pulled high via a 10 kohm resistor for normal operation.

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PIC16C64A-10/P

PIC16C64A-10/P - 8-Bit 10MHz OTP MCU 3.5KB DIP-40 | Microchip

The Microchip PIC16C64A-10/P is an 8-bit CMOS microcontroller built on the PIC16C core, offering 3.5KB of one-time programmable (OTP) program memory, 128 bytes of RAM, and 33 digital I/O lines in a 40-pin PDIP package. The device runs at a maximum clock of 10 MHz, delivering 200 ns instruction execution through the RISC-based PIC architecture. Operating from 4.0V to 6.0V, it targets cost-sensitive embedded control designs. What is a microcontroller (MCU)? A microcontroller is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable I/O peripherals. Within the broader taxonomy, the PIC16C64A sits in the 8-bit MCU class (8-bit -> microcontroller -> embedded processor -> semiconductor). Its RISC core uses only 35 single-word instructions, making it friendly for assembly and C developers. OTP memory allows the device to be programmed once and retained for the life of the product. Key features include five 8-bit I/O ports, three hardware timers, a USART, a synchronous serial port (SSP) supporting SPI/I2C, an 8-bit parallel slave port, and dual analog comparators. The instruction set executes every instruction in a single cycle except program branches (two cycles), which keeps interrupt latency predictable. Power consumption is approximately 15 µA typical at 5V/4 MHz and as low as 1 µA at 3V/32 kHz, enabling battery-friendly designs. The PIC16C64A architecture uses Harvard memory buses - separate program and data paths - so instruction fetch and operand access occur in one cycle. This contrasts with Von Neumann MCUs that share a bus. The wide operating range (commercial/industrial/extended temperature) and windowed ceramic variants make the family useful in both production deployments and engineering development where UV-erasable versions speed iteration. Typical applications include industrial control boards, motor drive front-ends, smart sensor interfaces, and legacy consumer electronics. Designers value the PIC16C64A-10/P for its deterministic timing, mature toolchain (MPASM, MPLAB), and pin compatibility with newer flash-based siblings such as the PIC16F74. When designing with this part, reserve a 4.7 kΩ pull-up on MCLR and decouple VDD with a 100 nF plus 10 µF bulk capacitor near the package. Because the OTP memory cannot be erased, verify firmware in a windowed (JW) ceramic variant or a flash-based sibling during development before committing to OTP for volume.

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PIC16C64A-10/PT

PIC16C64A-10/PT - 8-Bit 10MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C64A-10/PT is an 8-bit CMOS microcontroller from the PIC16C6x family, featuring a 10MHz maximum operating frequency, 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of RAM, housed in a 44-pin TQFP (10x10 mm) surface-mount package. The /PT suffix denotes the 44-pin TQFP industrial tray packaging variant of this legacy PIC microcontroller. As an OTP device, it is intended for low-volume, cost-sensitive production runs where in-circuit reprogrammability is not required. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, non-volatile data EEPROM, and a set of peripheral modules into one package. Within the broader PIC family, the PIC16C64A belongs to the mid-range PIC16 architecture, which is itself a subset of the 8-bit Harvard-architecture MCU category. This places the part in a lineage that runs: PIC16C64A -> PIC16C6x family -> PIC16 mid-range architecture -> 8-bit PIC microcontroller -> embedded MCU -> semiconductor. The mid-range architecture delivers roughly a 5x performance improvement over the earlier PIC16C5x baseline through a 14-bit instruction word, an 8-level hardware stack, and interrupt-driven peripheral control. Key features include 33 digital I/O pins across PORTA through PORTE, three timer modules (Timer0, Timer1, Timer2), a USART module for asynchronous/synchronous serial communications, and a Parallel Slave Port. The device operates from a 2.5V to 6.0V supply and is qualified for the 0C to +70C commercial temperature range. The TQFP-44 package is suitable for standard SMT assembly lines and offers a manageable footprint for hand-solderable prototypes. Typical applications include industrial control logic, embedded sensor interfaces, low-cost consumer electronics, motor control peripherals, and pre-production engineering builds that target a later flash-based PIC16F design. Designers frequently start with the PIC16C64A for cost-down OTP production after firmware is locked, then transition to PIC16F variants for flexibility during development. When designing with this device, note that OTP memory cannot be erased - firmware must be fully validated on a flash equivalent (such as PIC16F877A) before committing to the PIC16C64A for production. The /PT TQFP package requires a 0.8mm lead pitch layout, which is straightforward but demands reflow profile control. According to the Microchip PIC16C6X datasheet, the device is marked "Not Recommended for new designs" and Microchip recommends the PIC16C65B or the flash-based PIC16F877A as modern successors. This page synthesizes distributor pricing (LCSC: $4.2074 as of 2026-09-17), drop-in same-package alternatives, and practical design migration notes not aggregated in the manufacturer datasheet alone.

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PIC16C64A-10E/L

PIC16C64A-10E/L - 8-bit OTP MCU 3.5KB 10MHz 44-PLCC | Microchip

The Microchip Technology PIC16C64A-10E/L is an 8-bit CMOS microcontroller from the PIC16C6X family, featuring 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, 33 digital I/O pins, and a 10 MHz maximum operating frequency, all housed in a 44-pin PLCC package. The "/L" suffix designates the leadless PLCC (Plastic Leaded Chip Carrier) form factor, while "-10E" specifies the 10 MHz speed grade and the Extended temperature range (-40C to +125C). Operating voltage spans 2.5 V to 6.0 V across commercial, industrial, and extended grades. What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a class of MCU whose program memory can be written only once after manufacture using an external programmer. OTP MCUs sit hierarchically between mask-ROM devices (cheapest at high volume but require full mask commitment) and Flash MCUs (re-programmable, higher cost per bit). They are widely used in mature consumer appliances, automotive sub-systems, and industrial controllers where firmware is finalized and unit cost dominates. The PIC16C6X family specifically pioneered the RISC architecture in low-cost 8-bit microcontrollers. Key features include a fully-static CMOS design allowing DC to 10 MHz clock input, low power consumption of 15 uA typical at 5 V / 4 MHz and only 1 uA typical at 3 V / 32 kHz, an 8-bit timer/counter with 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator for reliable operation, and a Capture/Compare/PWM (CCP) module. The 14-bit instruction word enables compact code, and only 35 single-word instructions need to be learned. The PIC16C64A-10E/L uses a Harvard architecture with separate program and data buses plus a 14-bit instruction set, an 8-level deep hardware stack, and direct, indirect, and relative addressing modes. The device supports in-circuit serial programming (ICSP) via two pins, eliminating the need for a socketed programmer. Brown-out reset circuitry protects against low-Vdd code corruption. Typical applications include industrial control logic boards, appliance controllers, automotive body electronics, security alarm panels, and sensor interface modules. The wide 2.5 V to 6.0 V operating range also supports battery-backed instrumentation and 5 V industrial bus nodes. When designing with this MCU, reserve the MCLR/Vpp pin for in-circuit programming access and place a 10 kohm pull-up on it for normal operation. Decouple VDD with 0.1 uF ceramic as close to the pins as possible, and avoid long traces on OSC1/OSC2 to reduce EMI susceptibility. Brown-out detection must remain enabled for code integrity in noisy industrial environments. This page synthesizes current distributor pricing, drop-in compatible PLCC alternatives, and practical design notes for engineers sourcing the PIC16C64A-10E/L, complementing the official Microchip datasheet with comparison and selection content not found in any single manufacturer document.

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PIC16C64A-10E/PT

PIC16C64A-10E/PT - 8-Bit 10MHz 3.5KB OTP MCU | Microchip

The Microchip Technology PIC16C64A-10E/PT is an 8-bit RISC microcontroller from the PIC16C family featuring 3.5KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and 33 digital I/O pins, all housed in a 44-pin TQFP (10x10 mm) package. It executes instructions at a 10 MHz clock rate and operates across a 2.5V to 6.0V supply range, with the "E" suffix denoting the extended industrial temperature grade of -40C to +125C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces. Within the broader semiconductor taxonomy, an MCU sits under microprocessor units, then digital ICs, then integrated circuits. The PIC16C64A belongs to the mid-range PIC16C class, which uses a Harvard RISC architecture with separate program and data buses, allowing instruction fetching and data access to occur in the same cycle for predictable deterministic timing. Key features include 14-bit wide instruction words for compact code density, a hardware multiply option in selected parts, two 8-bit timer/counters with optional prescalers, a 16-bit timer/counter, an 8-bit parallel slave port, a USART serial port, and a watchdog timer with its own on-chip RC oscillator for fail-safe operation. The 33 I/O pins can source/sink up to 25 mA each, making the device suitable for direct LED and relay driving without external buffers. Architecturally, the PIC16C64A uses a 35 single-word instruction set with most instructions executing in a single 200 ns instruction cycle at 10 MHz (4 clocks per cycle). Its 8-level deep architecture plus hardware stack provides interrupt-driven response. OTP memory requires a one-time programming step during production, distinguishing it from Flash-based PIC16F successors. Typical applications include industrial control panels, motor control, HVAC fan controllers, automotive body electronics (non-safety), appliance control boards, and embedded instrumentation. The wide 2.5V to 6V operating range accommodates both 3.3V and 5V system designs. When designing, plan OTP programming flow carefully - OTP cannot be erased, so code must be validated on a windowed/Flash equivalent before production programming.

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PIC16C64A-10I/L

PIC16C64A-10I/L - 10MHz 8-Bit OTP MCU 3.5KB | PLCC-44 | Microchip

The Microchip Technology PIC16C64A-10I/L is an 8-bit RISC microcontroller in the PIC16C family, delivering 10 MIPS of throughput at a 10 MHz clock and housed in a 44-pin PLCC (16.59x16.59 mm) package. The part integrates 3.5 KB of one-time-programmable (OTP) program memory (2K x 14 words), 128 bytes of data RAM, and 33 digital I/O lines organized across multiple ports. It operates from 4.0 V to 5.5 V across the industrial -40C to +85C temperature range and is fabricated in low-power CMOS EPROM/ROM technology. An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes application firmware stored in on-chip non-volatile memory and interfaces with peripherals through digital and analog I/O. The PIC16C family uses a Harvard-architecture RISC core in which program and data memories are separate, the program store is word-addressed (14-bit instructions here), and most instructions complete in a single clock cycle. Within the broader taxonomy, this device is a microcontroller -> embedded processor -> programmable logic device -> semiconductor IC. It sits one tier below 16-bit PIC24 and dsPIC parts and is suitable where deterministic cycle counting, low BOM cost, and OTP/EPROM-based code storage are acceptable. Key differentiating features of the PIC16C64A-10I/L include 35 single-word instructions, a fully static design (clock can be halted), interrupt capability with a context-saving hardware stack, and on-chip peripherals such as a 16-bit timer/counter with a prescaler, an 8-bit timer/counter, a synchronous serial port (SSP) supporting SPI and I2C master/slave modes, a parallel slave port (PSP) for external bus expansion, an 8-bit ADC variant option, and a watchdog timer with its own on-chip RC oscillator for reliable brown-out recovery. From an architectural perspective, the device separates program and data buses (Harvard), uses a 14-bit instruction word to keep code density high, and provides direct, indirect, and relative addressing modes. Power consumption is typically < 2 mA at 5 V / 4 MHz and < 1 uA in standby with the watchdog disabled, which enables battery-backed designs. The 10 MHz -10 speed grade pairs with industrial-temperature silicon, while faster -20 variants are available for commercial applications. Typical applications include industrial control panels, motor-driver front-end controllers, instrumentation and metering, embedded sensor hubs, automotive body/comfort modules, low-cost consumer appliances, and legacy PIC16C5X/PIC16C6X upgrade platforms where pin-compatible drop-in replacements are needed. Engineers frequently migrate to PIC16F or PIC18 Flash parts for new designs but keep the OTP PIC16C64A for cost-sensitive, code-frozen production. Design consideration: the 'I' suffix denotes the industrial temperature grade (-40C to +85C); choose the 'E' (extended -40C to +125C) variant for under-hood automotive use. OTP memory can be programmed only once; allow a windowed ceramic package (-JW) version for prototype code iteration, then move to plastic OTP for volume production. This page synthesizes distributor pricing, application-aligned design notes, drop-in alternative MPNs from the same PIC16C family, and practical thermal/programming guidance not consolidated in any single Microchip document.

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Productos (38.000+)

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

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

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

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

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

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

PIC16C642T-10/SO - 8-Bit 10MHz OTP MCU 28-SOIC | Microchip

PIC16C642T-20E/SO - 8-Bit 20MHz OTP MCU 7KB | Microchip

PIC16C64A-04/L - 8-bit OTP MCU, 4MHz, 3.5KB | Microchip

PIC16C64A-04/P - 8-Bit 4MHz OTP MCU, 3.5KB, 40-PDIP | Microchip

PIC16C64A-04/PQ - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

PIC16C64A-04/PT - 8-bit OTP MCU 4MHz 3.5KB TQFP-44 | Microchip

PIC16C64A-04E/PQ - 8-Bit 4MHz OTP MCU, 33 I/O, 44-MQFP | Microchip

PIC16C64A-04E/PT - 8-Bit OTP MCU, 3.5KB EPROM, 4MHz, TQFP-44 | Microchip

PIC16C64A-04I/L - 4MHz 8-Bit OTP MCU 3.5KB | Microchip PLCC-44

PIC16C64A-04I/P - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

PIC16C64A-04I/PQ - 4MHz 8-Bit MCU, 3.5KB OTP, MQFP-44 | Microchip

PIC16C64A-04I/PT - 8-bit OTP MCU, 3.5KB, 33 I/O | Microchip

PIC16C64A-10/L - 8-Bit 10MHz OTP MCU 3.5KB 44-PLCC | Microchip

PIC16C64A-10/P - 8-Bit 10MHz OTP MCU 3.5KB DIP-40 | Microchip

PIC16C64A-10/PT - 8-Bit 10MHz OTP MCU 3.5KB | Microchip

PIC16C64A-10E/L - 8-bit OTP MCU 3.5KB 10MHz 44-PLCC | Microchip

PIC16C64A-10E/PT - 8-Bit 10MHz 3.5KB OTP MCU | Microchip

PIC16C64A-10I/L - 10MHz 8-Bit OTP MCU 3.5KB | PLCC-44 | Microchip