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PIC12LC671-04/SM - 4MHz 8-Bit CMOS MCU with ADC | Microchip
PIC12LC671-04/SM

PIC12LC671-04/SM - 4MHz 8-Bit CMOS MCU with ADC | Microchip

The Microchip Technology PIC12LC671-04/SM is an 8-bit CMOS RISC microcontroller with an integrated 8-bit analog-to-digital converter (ADC), 1.75 KB (1K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of RAM, housed in an 8-pin SOIJ (SM) surface-mount package. The "LC" suffix denotes the low-voltage CMOS variant, which operates from a supply voltage as low as 2.5 V while still supporting clock speeds up to 4 MHz. With only 6 general-purpose I/O pins, the PIC12LC671 is designed for space-constrained analog and digital embedded designs that require on-chip ADC and very low power draw. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and peripherals such as ADC, timers and I/O ports. Within Microchip's taxonomy, the PIC12C67x family belongs to the PIC10/12/16 mid-range 8-bit architecture, which sits beneath the PIC18 high-tier 8-bit family and the PIC24/dsPIC 16-bit families in Microchip's broader 8-bit -> 16-bit -> 32-bit microcontroller hierarchy. The mid-range core uses a 14-bit instruction word and Harvard architecture, delivering deterministic interrupt response and predictable timing for real-time control applications. Key features include four-channel 8-bit ADC, two analog comparators, a 16-bit timer/counter with programmable prescaler, an 8-bit timer/counter, internal watchdog timer with on-chip RC oscillator, and 4 MHz maximum operating frequency. The device supports in-circuit serial programming (ICSP) via GP0/GP1, allowing firmware to be programmed after PCB assembly. Power management features include selectable oscillator modes and a power-saving sleep mode with wake-up via I/O change or watchdog timer overflow. Typical applications include battery-powered sensor interfaces, automotive body electronics (where the "LC" extended voltage range is valuable), consumer appliance controllers, simple closed-loop fan control, and low-cost analog data acquisition. The combination of on-chip ADC and very low cost makes this part a common choice for replacement of discrete analog signal chains in cost-sensitive products. When designing with this device, engineers should note that OTP memory cannot be reprogrammed; for prototyping the JW (ceramic windowed) or -I (industrial temperature) variants are typically preferred. The SOIJ package offers a slightly smaller footprint than standard SOIC while remaining hand-solderable with appropriate tooling.

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PIC12LC671-04I/MF - 8-bit OTP MCU, 1.75KB, 4MHz, 8-DFN-S | Microchip
PIC12LC671-04I/MF

PIC12LC671-04I/MF - 8-bit OTP MCU, 1.75KB, 4MHz, 8-DFN-S | Microchip

The Microchip Technology PIC12LC671-04I/MF is an 8-bit PIC microcontroller from the PIC12C family, integrating 1.75KB (1K x 14) of One-Time Programmable (OTP) program memory and 128 bytes of RAM, housed in an 8-lead DFN-S (6x5 mm) surface-mount package. It executes instructions at up to 4MHz, includes an internal RC oscillator, and exposes 5 or 6 general-purpose I/O pins with a built-in 4-channel 8-bit analog-to-digital converter. A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory, working RAM, and configurable peripherals into one device. The PIC12LC671 belongs to the microcontrollers -> 8-bit microcontrollers -> PIC microcontrollers -> OTP (one-time programmable) hierarchy within the broader embedded semiconductor category. Its 12C-series core uses a RISC-style instruction set with only 33 single-word instructions, allowing deterministic execution timing for real-time control tasks. Key specifications include 1.75KB OTP program memory, 128 bytes of data RAM, 6 I/O pins, four 8-bit ADC channels with internal reference, and ultra-low-power operation down to 2.5V supply. The 04 speed grade guarantees 4MHz operation across the industrial temperature range of -40C to +85C, while the suffix -I denotes the industrial grade. The DFN-S package enables compact PCB layouts while exposing a thermal pad for improved heat dissipation. The device uses Microchip's classic mid-range PIC architecture with a 14-bit instruction word and a Harvard memory structure, giving it a deterministic 1-cycle-per-instruction core. The integrated 4-channel 8-bit ADC allows direct interfacing with analog sensors without an external converter, and the internal oscillator eliminates the need for external crystals or resonators in cost-sensitive designs. Typical applications include battery-powered sensor nodes, low-cost consumer appliances, simple motor control, LED lighting controllers, and standalone analog signal conditioning. The integrated ADC and internal oscillator make the part a single-chip solution for many embedded designs that previously required a separate ADC IC or external clock source. When designing with this MCU, choose the proper speed grade for your oscillator configuration; the -04 version operates at up to 4MHz. Use low-power sleep modes for battery applications and place a 100nF decoupling capacitor close to VDD to ensure ADC accuracy. This page synthesizes distributor pricing, drop-in OTP and flash alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC12LC671T-04/SM - 8-Bit 4MHz CMOS MCU 1.75KB OTP | Microchip
PIC12LC671T-04/SM

PIC12LC671T-04/SM - 8-Bit 4MHz CMOS MCU 1.75KB OTP | Microchip

The Microchip Technology PIC12LC671T-04/SM is an 8-bit PIC microcontroller featuring 4 MHz operation, 1.75 KB (1K x 14) of OTP program memory and 128 x 8 bytes of RAM, supplied in a surface-mount 8-pin SOIJ package on Tape & Reel. It operates from a 2.5 V to 5.5 V supply, integrates a 4-channel 8-bit A/D converter, and exposes 6 digital I/O lines, making it suited to compact embedded designs with mixed analog/digital requirements. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and peripheral interfaces such as ADCs, timers, and communication controllers. The PIC12LC family belongs to Microchip's 8-bit PIC RISC architecture, which sits in the broader taxonomy of microcontroller -> embedded processor -> semiconductor device. The LC variant specifically targets low-voltage (2.5 V min) operation, enabling battery-powered and energy-harvesting designs that the original PIC12C parts (4.0 V min) cannot directly address. Key features include the 8-bit PIC RISC core with 33 single-word instructions, an 8-bit real-time counter (TMR0) with programmable prescaler, a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator, Power-On Reset (POR), Device Reset Timer (DRT), and In-Circuit Serial Programming (ICSP) support. The integrated 4-channel 8-bit ADC eliminates the need for external converter ICs, reducing BOM cost and PCB area in sensor-interface and signal-conditioning products. Architecturally, the PIC12LC671 uses a Harvard-class RISC core with separate program and data buses, a 14-bit instruction word (vs the 12-bit baseline of PIC10/PIC12F), and CMOS process technology for low quiescent current. The SOIJ-8 surface-mount package supports high-density board designs, while the OTP program memory allows cost-optimized production runs without the mask-NRE of ROM parts. Typical applications include small consumer appliances, sensor signal conditioning with on-chip ADC, low-power battery devices, simple closed-loop controllers, and microcontroller-based replacement of discrete logic. The combination of low-voltage operation, integrated ADC, and small footprint makes it suitable for hand-held instruments and remote sensor nodes. When designing with this part, ensure decoupling capacitors (100 nF plus bulk) are placed within 5 mm of the VDD pin, and note that OTP memory requires single-shot programming - production firmware must be stable before wafer programming. The /SM SOIJ package has JEDEC-compliant land pattern and MSL1 moisture sensitivity. This page synthesizes distributor pricing, same-package pin-to-pin compatible alternatives, and practical design notes drawn from the Microchip PIC12LC671 datasheet family - a single reference not available on individual distributor pages.

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PIC12LC671T-04I/MF - 4MHz 8-Bit MCU 1.75KB OTP | Microchip
PIC12LC671T-04I/MF

PIC12LC671T-04I/MF - 4MHz 8-Bit MCU 1.75KB OTP | Microchip

The Microchip Technology PIC12LC671T-04I/MF is an 8-bit CMOS RISC microcontroller from the PIC12C67X family, featuring 1.75KB (1K x 14) of One-Time Programmable (OTP) program memory, 64 bytes of data RAM, an integrated 8-bit A/D converter, and 6 I/O pins. The device operates from a low-voltage range of 2.5V to 5.5V and executes instructions at up to 4MHz, making it suitable for cost-sensitive embedded applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. The PIC12LC67X family belongs to the PIC microcontroller hierarchy: MCU -> 8-bit MCU -> RISC MCU -> PIC architecture -> PIC12 family -> PIC12LC67X sub-family. These MCUs use a Harvard architecture with separate program and data buses, allowing single-cycle instruction execution with deterministic timing - critical for real-time control loops. The device offers 64 bytes of RAM, a hardware USART/SCI interface (asynchronous and synchronous serial), and four analog input channels multiplexed to an 8-bit successive-approximation ADC. The internal 4MHz RC oscillator and on-chip reset circuitry eliminate most external components. The 'L' suffix denotes the low-voltage (2.5V) variant versus the standard PIC12C671 (3.0V minimum), while 'T' indicates tape-and-reel packaging and 'MF' designates the 8-pin DFN-S (6x5 mm) package with exposed pad. Typical applications include battery-powered sensor nodes, automotive interior lighting, small appliance control, smart metering, and remote-control transmitters. The 4MHz operation, low cost, and compact DFN footprint make it attractive for high-volume consumer products where board space and BOM cost dominate. When designing with this part, note that OTP memory cannot be reprogrammed - firmware must be verified before production programming. The industrial -40C to +85C temperature grade allows deployment in harsh environments, but engineers should derate clock speed above 70C if ADC accuracy matters. This page synthesizes distributor stock, datasheet parameters, drop-in same-family alternatives, and practical design notes not consolidated on the manufacturer product page.

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PIC12LC671T-04I/SM - 8-Bit PIC MCU, 1.75KB OTP, 4MHz | Microchip
PIC12LC671T-04I/SM

PIC12LC671T-04I/SM - 8-Bit PIC MCU, 1.75KB OTP, 4MHz | Microchip

The Microchip Technology PIC12LC671T-04I/SM is an 8-bit CMOS microcontroller in the PIC12C family with integrated 8-bit A/D converter, 1.75 KB (1K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 6 I/O pins, housed in an 8-pin SOIJ (T/R) surface-mount package. Operating up to 4 MHz clock speed from a 2.5 V to 5.5 V supply, this device delivers fully-static CMOS performance with low power consumption suitable for battery-powered and embedded control applications. An 8-bit PIC microcontroller is a compact RISC-based processing unit that integrates CPU core, program memory, RAM, peripherals, and I/O into a single IC. PIC microcontrollers sit within the broader taxonomy of microcontrollers -> microprocessors -> semiconductor ICs, and the PIC12 family specifically targets space-constrained cost-sensitive designs requiring minimal external component count. The LC variant denotes a low-voltage/low-power version, while the T suffix indicates Tape and Reel packaging for high-volume assembly. Key features include four-channel 8-bit A/D conversion, 8-bit real-time clock/counter (TMR0) with programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), Watchdog Timer (WDT) with dedicated on-chip RC oscillator, and internal oscillator support. The wide 2.5 V to 5.5 V supply range accommodates both 3.3 V and 5 V system designs, while 6 I/O pins provide ample connectivity for sensor interfaces, switch inputs, and LED drive outputs in compact form factors. The PIC12C67X architecture uses a 14-bit instruction word with a two-stage pipeline, delivering efficient code density for C and assembly programming. The integrated 8-bit ADC with multiple channels eliminates the need for external conversion ICs, reducing BOM cost and PCB area. Brown-out detection, wide operating temperature range, and CMOS low-power standby make the device suitable for industrial and consumer applications. Typical applications include low-cost battery-powered sensor nodes, appliance control boards, automotive interior lighting modules, HVAC damper actuators, security system sensors, and small motor control subsystems. The combination of integrated ADC, watchdog timer, and internal oscillator reduces external part count significantly. When designing with this part, ensure the watchdog timer is properly serviced in firmware to prevent unintended resets, and verify that the chosen clock source (internal RC or external crystal) matches timing requirements for serial communications. Programming requires Microchip-compatible device programmers supporting OTP PIC12C67X devices. This page synthesizes drop-in alternative listings, parametric comparison, and practical design notes not found in the standalone manufacturer datasheet, enabling engineers to evaluate the PIC12LC671T-04I/SM for replacement, second-source, and new-design scenarios.

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PIC12LC672-04/P - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
PIC12LC672-04/P

PIC12LC672-04/P - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC12LC672-04/P is an 8-bit CMOS microcontroller from the PIC12C67x series, featuring 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of RAM in an 8-pin PDIP through-hole package. The device operates at a maximum clock speed of 4 MHz and is powered by a 2.5 V to 5.5 V supply, supporting 6 I/O pins with integrated A/D converter functionality. An 8-bit microcontroller (MCU) is a small computer-on-a-chip containing a CPU, program memory, data RAM, and peripherals on a single silicon die. The PIC12LC672 belongs to the PIC (Peripheral Interface Controller) family of RISC microcontrollers, characterized by a Harvard architecture with separate program and data buses. Within the broader semiconductor taxonomy, this part sits in the hierarchy: microcontroller -> 8-bit MCU -> embedded controller -> integrated circuit -> semiconductor. PIC microcontrollers are widely used in simple control applications where deterministic execution, low pin count, and minimal external components are required. Key features include an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator for reliable recovery from code lockups. The 6 GPIO pins are shared with on-chip analog and digital peripherals, and the LC suffix indicates a low-power CMOS variant optimized for battery-operated applications with extended operating voltage range down to 2.5 V. Typical applications include battery-powered sensor interfaces, simple appliance controls, low-cost consumer electronics, and replacement of discrete logic in compact designs. The 8-pin PDIP package makes the PIC12LC672-04/P well suited for through-hole prototyping, hobby projects, and legacy designs where a socketed or easily-replaceable MCU is desirable. When designing with this part, note that the OTP program memory can be written only once, so production firmware must be fully validated before programming. For applications requiring field firmware updates, consider a Flash-based alternative such as the PIC12F675. The /P suffix designates the 8-pin PDIP package rated for the commercial temperature range (0C to +70C). This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes compiled from the Microchip datasheet family and current distributor listings - context not aggregated in any single manufacturer document.

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PIC12LC672-04/SM - 8-Bit 4MHz OTP MCU, 3.5KB | Microchip
PIC12LC672-04/SM

PIC12LC672-04/SM - 8-Bit 4MHz OTP MCU, 3.5KB | Microchip

The Microchip Technology PIC12LC672-04/SM is an 8-bit CMOS microcontroller from the PIC12C family, featuring 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and a 4 MHz instruction clock, all housed in an 8-pin SOIJ surface-mount package. It integrates a 4-channel 8-bit A/D converter, six general-purpose I/O lines, and a 8-bit real-time counter (TMR0) with programmable prescaler, providing a compact compute platform for space-constrained designs. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, and peripherals. The PIC12C/12CE/12F family from Microchip Technology uses a Reduced Instruction Set Computer (RISC) Harvard architecture, which separates program and data memory paths to enable single-cycle instruction execution and deterministic interrupt response. The PIC12LC672 sits in the hierarchy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor IC. Key features include an operating voltage range of 2.5V to 5.5V, 33 single-word instructions, a Power-On Reset (POR) circuit, a Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable recovery from firmware faults. The internal 4 MHz oscillator eliminates the need for external clock components, reducing BOM cost and PCB area. The 8-bit A/D converter provides four analog input channels with selectable reference voltages, enabling direct sensor interfacing without external ADC ICs. The PIC12LC672 uses Microchip's mature OTP program memory architecture, which allows prototyping and low-volume production using inexpensive programming tools, while the LC variant indicates operation down to 2.5V for battery-powered applications. The integrated peripherals allow designers to replace multiple discrete components with a single MCU, simplifying BOM and improving reliability through reduced part count. Typical applications include battery-powered sensor nodes, simple motor drivers, LED controllers, and embedded control subsystems in consumer and industrial products. The combination of low power, integrated ADC, and small 8-pin package makes it well-suited to cost-sensitive designs where board space is at a premium. When designing with this part, use Microchip's MPLAB development environment for code generation and debugging. Ensure decoupling capacitors are placed close to VDD and that the MCLR pin is properly biased. The OTP memory is one-time programmable; once programmed, the code cannot be erased or rewritten. This page synthesizes distributor pricing, drop-in alternatives from the PIC12C/12CE family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and substitution decisions.

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PIC12LC672-04I/P - 8-Bit OTP MCU 3.5KB 4MHz | Microchip
PIC12LC672-04I/P

PIC12LC672-04I/P - 8-Bit OTP MCU 3.5KB 4MHz | Microchip

The Microchip Technology PIC12LC672-04I/P is an 8-bit CMOS RISC microcontroller with 3.5KB OTP program memory and 128 bytes of RAM, housed in an 8-pin PDIP (DIP-8) through-hole package with 6 I/O lines. It operates from 2.5V to 5.5V supply, supports a 4 MHz clock, and integrates a 10-bit resolution A/D converter and an 8-bit real-time counter with programmable prescaler. An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, program memory, RAM, and programmable peripherals on one die. Microcontrollers belong to the broader category of embedded processors, sitting beneath microprocessors in complexity but offering a complete compute-and-control solution in a single package. The PIC12LC672 specifically belongs to Microchip's PIC12C67X family of low-pin-count CMOS MCUs with on-chip ADC, hierarchically nested within: microcontroller -> embedded processor -> semiconductor IC. The 12-bit instruction word and RISC Harvard architecture deliver deterministic instruction timing ideal for low-cost analog-sensing and control applications. Key features include power-on reset (POR), device reset timer (DRT), watchdog timer (WDT) with its own dedicated on-chip RC oscillator, and an industrial operating temperature range of -40C to +85C. The integrated 10-bit ADC enables direct connection to analog sensors without an external converter, while the 8-bit TMR0 with programmable prescaler supports precise event timing. The device supports serial programming via Microchip's ICSP protocol, simplifying field upgrades and prototyping. Typical applications include analog-sensing embedded nodes, low-cost battery chargers, sensor signal conditioning, household appliance controls, and small-form-factor industrial instrumentation. The 6 I/O pins and 4 MHz instruction rate deliver adequate throughput for slow-loop control and intermittent-sampling applications rather than high-bandwidth signal processing. When designing with this part, ensure the brown-out and power-on reset timing are accounted for in the application logic, and choose the appropriate oscillator configuration (internal 4 MHz RC or external crystal) for your timing budget. The 128-byte RAM limit also requires disciplined variable usage in firmware.

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PIC12LC672T-04/SM - 8-Bit CMOS MCU 4MHz 3.5KB OTP 8-SOIJ | Microchip
PIC12LC672T-04/SM

PIC12LC672T-04/SM - 8-Bit CMOS MCU 4MHz 3.5KB OTP 8-SOIJ | Microchip

The Microchip Technology PIC12LC672T-04/SM is an 8-bit, low-cost, high-performance CMOS fully-static PIC microcontroller with an integrated analog-to-digital converter, packaged in an 8-SOIJ surface-mount form factor. The device operates from 2.5V to 5.5V supply, runs at 4 MHz internal clock, integrates 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, and provides 6 I/O ports in an 8-pin SOIJ outline. The /SM suffix denotes the SOIJ-8 surface-mount package supplied on tape-and-reel for high-volume assembly lines. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and programmable peripherals. In the broader system hierarchy, the PIC12LC672 belongs to the 8-bit PIC microcontroller family, itself a subcategory of microcontrollers under embedded processors. The 'LC' prefix indicates the low-voltage CMOS variant, optimized for battery-friendly 3.3V systems while remaining 5V tolerant - useful when a design must bridge legacy 5V peripherals and modern 3.3V logic. Key features include 3.5 KB OTP program memory, 128 bytes RAM, four analog input channels with 8-bit ADC, an 8-bit real-time counter (TMR0) with programmable prescaler, a Watchdog Timer (WDT) with dedicated on-chip RC oscillator, Power-On Reset (POR), Device Reset Timer (DRT), and an internal 4 MHz oscillator. The integrated 8-bit ADC eliminates the need for an external converter in simple sensor interfaces such as thermistor or potentiometer reading. Architecturally, the PIC12LC672 uses Microchip's classic RISC Harvard architecture with a 12-bit instruction word and a two-stage pipeline, delivering 1 MIPS at 4 MHz. CMOS static design means clock can be stopped without losing register state - ideal for ultra-low-power sleep modes. The device's six general-purpose I/O pins multiplex with the ADC inputs, oscillator pins, and reset, allowing designers to remap peripheral functions as application needs dictate. Typical applications include consumer remote controls, battery-powered sensor nodes, appliance front-panel controllers, simple motor control signal conditioning, low-end security keypads, and embedded timers in industrial 24V systems stepped down to 3.3V or 5V rails. The combination of ADC + small OTP memory makes it well suited for cost-sensitive analog-front-end products. When designing with this part, remember that OTP memory cannot be re-programmed - production firmware must be finalized before mask programming, or the part should be replaced by an EPROM/Flash equivalent (e.g., PIC12F675 or PIC12F683) for prototyping. Decoupling capacitors (100 nF) should be placed within 5 mm of VDD, and unused I/O pins should be configured as outputs to minimize quiescent current. This page synthesizes distributor pricing, drop-in PIC12 family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC12LC672T-04I/MF - 8-Bit OTP MCU 3.5KB 4MHz 8-DFN | Microchip
PIC12LC672T-04I/MF

PIC12LC672T-04I/MF - 8-Bit OTP MCU 3.5KB 4MHz 8-DFN | Microchip

The Microchip Technology PIC12LC672T-04I/MF is an 8-bit CMOS microcontroller from the PIC12C67x family, featuring 3.5 KB of One-Time Programmable (OTP) program memory (2K x 14), 128 bytes of RAM, and a 4-channel 8-bit ADC. It is housed in an 8-pin DFN-S (6x5 mm) surface-mount package with an exposed thermal pad and operates up to 4 MHz from a 2.5V to 5.5V supply. The device is part of the legacy PIC12C family targeting low-pin-count embedded control, with 5 GPIO and 1 input-only pin plus a MCLR/GP3 shared pin. What is an 8-bit OTP microcontroller? An OTP (One-Time Programmable) microcontroller is a class of MCU whose program memory can be written exactly once after manufacture, using a programmer or high-voltage serial protocol. Unlike flash-based MCUs, OTP parts cannot be field-updated, but they cost less per die and are well-suited to high-volume, fixed-function products such as appliance controllers, sensor signal conditioners, and disposable medical accessories. PIC12C67x parts sit in the hierarchical taxonomy of microcontroller -> 8-bit MCU -> CMOS RISC MCU -> PIC architecture -> PIC12C family, providing a baseline platform for simple control loops, A/D conversion, and timing tasks. Key features include a 4 MHz internal RC-like or external oscillator option, 1 µs instruction cycle, six I/O pins, a single 8-bit timer (TMR0) with watchdog, an analog comparator, brown-out reset, and an in-circuit serial programming (ICSP) interface. The OTP variant offers cost-optimized one-time programming for high-volume production runs where firmware stability is guaranteed. Architecturally, the PIC12LC672 uses a Harvard RISC core with separate program and data buses, a single accumulator (W) and 32-byte file-register area, allowing most instructions to execute in a single cycle. The integrated ADC delivers 8-bit resolution across 4 analog channels with successive-approximation conversion, sharing pins with the digital I/O ports. The 8-DFN-S exposed pad improves thermal dissipation for industrial temperature operation from -40 °C to +85 °C. Typical applications include battery chargers, LED lighting controllers, smoke detectors, simple sensor interfaces, and small appliance control. This component integrates seamlessly with Microchip's MPLAB X IDE and XC8 compiler toolchain for development and programming. When designing with this part, allocate pin 3 (GP3/MCLR) carefully because it doubles as the master-clear reset input and as a general-purpose input; the device has no dedicated MCLR-disable mode. For high-noise environments, place a 0.1 µF decoupling capacitor adjacent to the VDD pin and use the exposed pad as a ground plane anchor. This page synthesizes distributor pricing, parametrically-similar Microchip alternatives, and design considerations not consolidated on the manufacturer product page.

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PIC12LC672T-04I/SM - 8-bit 4MHz 3.5KB OTP MCU | Microchip
PIC12LC672T-04I/SM

PIC12LC672T-04I/SM - 8-bit 4MHz 3.5KB OTP MCU | Microchip

The Microchip Technology PIC12LC672T-04I/SM is an 8-bit CMOS RISC microcontroller in the PIC12C family, offering a 4MHz core speed with 3.5KB (2K x 14) of One-Time Programmable (OTP) program memory and 128 bytes of RAM, packaged in an 8-pin SOIJ (SM) surface-mount form. The device integrates a 10-bit successive-approximation A/D converter, Power-On Reset (POR), Device Reset Timer (DRT), Watchdog Timer (WDT) with its own on-chip RC oscillator, and a power-saving SLEEP mode. A microcontroller (MCU) is a single-chip computer that contains a processor core, program and data memory, and peripheral interfaces. Within the broader taxonomy, the PIC12LC672 belongs to the 8-bit MCU class, specifically the PIC12C6xx OTP subfamily, which sits between discrete logic controllers and 16/32-bit Cortex-M0 microcontrollers in capability. The 'LC' suffix denotes the low-power CMOS process variant, while the 'T' suffix indicates tape-and-reel packaging and 'I' indicates the industrial operating temperature grade. Key features include 6 I/O pins, 33 instructions (12-bit opcode), 8-level hardware stack, 8-bit real-time clock/counter (TMR0) with 8-bit programmable prescaler, and direct LED drive capability. The wide 2.5V to 5.5V supply range enables battery-powered designs while maintaining compatibility with 5V logic. The 4MHz oscillator frequency delivers 1 MIPS of throughput, suitable for simple control loops and sensor interface tasks. The architecture uses a Harvard design with separate program and data buses, allowing instruction fetch and operand access to occur simultaneously. This RISC-based core executes most instructions in a single 1us cycle, with only branch instructions requiring two cycles, providing deterministic timing for embedded control applications. Typical applications include appliance control, automotive sensor interfaces, low-cost battery-powered devices, smart-card readers, and security systems. The combination of OTP memory, integrated ADC, and small form factor makes it particularly suitable for high-volume cost-sensitive products where code is finalized in production. When designing with this device, ensure the supply decoupling capacitor is placed within 4mm of the VDD pin, and that the MCLR reset circuit respects the minimum pulse-width specification. The OTP memory cannot be re-programmed, so code development should be performed on a windowed or flash equivalent before committing to OTP. This page synthesizes distributor pricing, drop-in same-brand alternatives, and practical design notes not found in the manufacturer datasheet. Engineers comparing the PIC12LC672 family should weigh OTP vs UV-erase memory, package pinout (8-pin SOIJ vs PDIP), and the availability of A/D converter channels when selecting the optimal variant.

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PIC12LCE518-04/SM - 8-bit OTP MCU 768B 4MHz SOIJ-8 | Microchip
PIC12LCE518-04/SM

PIC12LCE518-04/SM - 8-bit OTP MCU 768B 4MHz SOIJ-8 | Microchip

The Microchip Technology PIC12LCE518-04/SM is an 8-bit CMOS microcontroller from the PIC12C family featuring 768 bytes of One-Time-Programmable (OTP) program memory, 25 bytes of RAM, 6 I/O pins, and a 4 MHz internal oscillator, packaged in an 8-pin SOIJ (208-mil) surface-mount package. The 'LC' suffix denotes the low-voltage, low-power variant with an operating voltage range of 2.5V to 5.5V, and the 'E' indicates on-chip EEPROM data memory (16 bytes) for non-volatile parameter storage in standalone applications. An 8-bit microcontroller (MCU) is a self-contained computing element that integrates a CPU, program memory (ROM/OTP/Flash), data memory (RAM), and peripheral interfaces onto a single silicon die. Within the broader taxonomy, MCUs sit below microprocessors (which require external memory and peripherals) and above simple state machines; the PIC12C5XX family specifically targets cost-sensitive, space-constrained applications where a few pins of digital I/O, a hardware timer, and a low-power sleep mode are sufficient. The Harvard RISC architecture uses separate program and data buses, allowing most instructions to execute in a single instruction cycle (1 µs at 4 MHz). Key features include 33 single-word instructions, all single-cycle except program branches (two cycles), an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator, and 16 bytes of EEPROM data memory. The 12-bit instruction width delivers approximately 2:1 code compression versus competing 8-bit architectures in the same price tier. The PIC12LCE518 architecture combines a RISC CPU with a precise 4 MHz internal oscillator and analog-friendly digital I/O, enabling deterministic interrupt response and minimal code overhead. In-system programmability is not supported on this OTP variant - the device must be programmed before final PCB assembly. Typical applications include low-cost consumer appliances, IR remote controls, battery-powered sensor interfaces, LED lighting controllers, and simple standby controllers in white goods. Its low-voltage capability also suits 2x AA / 3x AAA battery packs and energy-harvesting subsystems where quiescent current directly impacts battery life. When designing with this MCU, note that the OTP memory cannot be re-programmed - any firmware bug discovered after programming requires replacing the chip. The 8-SOIJ package provides better thermal performance and lower profile than standard SOIC-8, but requires careful PCB land pattern matching; verify footprint against the Microchip packaging specification rather than assuming SOIC-8 compatibility. This page consolidates distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, enabling faster sourcing and substitution decisions.

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PIC12LCE518-04/SN - 8-bit OTP MCU, 4 MHz, 768B | Microchip
PIC12LCE518-04/SN

PIC12LCE518-04/SN - 8-bit OTP MCU, 4 MHz, 768B | Microchip

The Microchip Technology PIC12LCE518-04/SN is a low-power 8-bit CMOS OTP (One-Time Programmable) microcontroller in the PIC® 12C family, packaged in an 8-pin SOIC (SN) with 1.27 mm pitch. It executes instructions in 1 µs per cycle at a 4 MHz oscillator and integrates 768 bytes of program memory (512 × 12-bit words) plus 25 bytes of RAM. Six general-purpose I/O pins support digital interfacing for simple control loops, sensors, and user input. An LDO (Low-Dropout) linear regulator maintains a stable output voltage even when the input voltage approaches the output. In the same way, a microcontroller (MCU) is an integrated circuit that combines a CPU, memory, and peripherals into a single chip. Within the MCU hierarchy, the PIC12LCE518 belongs to the 8-bit family -> RISC architecture -> PIC® 12C sub-family -> low-power (LC) OTP segment -> embedded controller class. It is part of the broader power management and embedded systems semiconductor category. Key features include a wide operating voltage range of 2.5 V to 5.5 V, low-power operation suited to battery-powered designs, an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation. The PIC architecture's 33 single-word instruction set provides easy programmability for both novice and experienced developers. The PIC12LCE518 uses a Harvard RISC architecture that separates program and data memory buses, enabling simultaneous instruction fetch and data access. This improves throughput over von Neumann designs at the same clock rate. Its CMOS OTP implementation allows one-time field programmability with a simple programmer, which is well-suited to mature products in stable production. Typical applications include consumer electronics, industrial control, automotive subsystems, remote controls, sensor interfaces, and small appliance controls. The compact 8-pin SOIC footprint and low power consumption make it ideal for cost-sensitive space-constrained designs. When designing with this MCU, ensure the oscillator configuration matches the application clock accuracy requirement; the internal 4 MHz RC oscillator is suitable for most general-purpose tasks, but applications requiring precise timing should use an external crystal. The OTP nature means firmware must be fully validated before programming - in-circuit reprogramming is not supported. This page synthesizes distributor pricing from Mouser and LCSC, parametric cross-references from DigiKey, and practical design notes not found in the manufacturer datasheet alone, including the ETEI comparison with the flash-based PIC12F519 successor.

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PIC12LCE518-04I/SM - 8-Bit CMOS MCU 768B OTP 4MHz | Microchip
PIC12LCE518-04I/SM

PIC12LCE518-04I/SM - 8-Bit CMOS MCU 768B OTP 4MHz | Microchip

The Microchip Technology PIC12LCE518-04I/SM is an 8-pin, 8-bit CMOS microcontroller with 768 bytes of OTP program memory (512 x 12 words), 25 bytes of RAM, and 6 I/O pins, housed in an 8-SOIJ (5.30 mm / 0.209 in width) surface-mount package. Operating at a 4 MHz clock with a 1 microsecond instruction cycle, it supports a 2.5V to 5.5V supply voltage and the industrial -40C to +85C temperature range, making it suitable for cost-sensitive embedded applications. What is a PIC 12C microcontroller? The PIC12C5XX family is Microchip's entry-level 8-bit CMOS microcontroller line, architecturally positioned below the PIC16 and PIC18 families. These MCUs use a RISC-like 33-instruction set with single-cycle execution (except branches which take two cycles), enabling deterministic timing for embedded control loops. The 'L' prefix denotes the low-voltage (2.5V minimum) variant, the 'E' indicates integrated EEPROM data memory, and the PIC12C/12CE series typically ships in 8-pin packages - the smallest footprint in Microchip's OTP line. Key features include an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation without external supervision. The 6 I/O pins support direct LED drive and digital interfacing, while 12-bit-wide instructions deliver 2:1 code compression versus competing 8-bit MCUs in its class. The PIC12LCE518-04I/SM integrates 16 bytes of EEPROM data memory, allowing persistent storage of calibration values, configuration parameters, or usage counters without external serial EEPROM. The on-chip WDT with dedicated RC oscillator ensures the MCU recovers from software lockups even if the main system clock fails - critical for unattended appliance and industrial sensor applications. Typical applications include appliance controllers, LED drivers, sensor signal conditioning, low-end consumer electronics, and battery-powered IoT edge nodes. The wide 2.5V-5.5V supply range permits direct operation from two alkaline cells or a single Li-ion cell. The combination of small footprint, OTP programmability, and integrated EEPROM makes this part a strong fit for high-volume OEM products where unit cost dominates. When designing with the PIC12LCE518-04I/SM, ensure the MCLR pin is pulled high through a 10 kohm resistor for normal operation and that the supply rail is decoupled with a 100 nF ceramic capacitor within 5 mm of the VDD pin. The /SM suffix denotes the SOIJ (Small Outline IC with J-lead) package, which offers superior board-level reliability versus standard SOIC for thermal-cycled environments. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC12LCE518-04I/SN - 8-Bit 4MHz OTP MCU 768B | Microchip
PIC12LCE518-04I/SN

PIC12LCE518-04I/SN - 8-Bit 4MHz OTP MCU 768B | Microchip

The Microchip Technology PIC12LCE518-04I/SN is an 8-bit CMOS microcontroller from the PIC12C family, offering 4 MHz core clock speed, 768 bytes of OTP program memory (512 x 12 bits), and 25 bytes of RAM in an 8-pin SOIC package. Designed for low-power and low-cost embedded control, this industrial-temperature variant operates from 2.5V to 5.5V and provides 6 I/O pins suitable for driving peripherals, sensors, and user-interface logic. An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip built around an 8-bit data path, ROM/Flash/OTP program memory, RAM, and a complement of timers and I/O. It occupies a position in the embedded hierarchy below 32-bit ARM Cortex-M parts but above discrete logic, delivering deterministic single-cycle instruction execution that simplifies real-time firmware design. Within Microchip's portfolio, the PIC12 family is positioned as a compact, OTP/Flash-based baseline MCU for high-volume cost-sensitive applications. Key features include a programmable 8-bit prescaler feeding an 8-bit real-time counter/timer (TMR0), a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator for reliable operation, Power-On Reset (POR), Device Reset Timer (DRT), and programmable code protection. The industrial (-40C to +85C) operating range suits factory, automotive subsystems, and outdoor installations. The PIC12C architecture is RISC-based with only 33 single-word instructions, simplifying code development and reducing firmware size. The PIC12LCE518 uses a Harvard architecture with separate program (OTP, 12-bit wide) and data (RAM) buses, plus a 14-bit instruction word. The "LCE" suffix denotes the low-power CMOS EPROM variant, distinguished from baseline PIC12C parts by lower operating current. Brown-out detect and a wide 2.5V-5.5V supply range make the part tolerant of noisy industrial rails. Typical applications include appliance control, smart sensors, low-cost remote controls, battery-powered instrumentation, and simple logic replacement. Designers also use it in automotive accessories (interior lighting, HVAC actuators), consumer white goods, and security/keypad panels. The small 8-SOIC footprint enables single-side PCB designs with minimal BOM. When designing with this part, note that OTP memory is one-time programmable - firmware cannot be field-upgraded. For prototyping or field-updatable designs, prefer the PIC12F equivalent. Decoupling capacitors (100 nF close to VDD) and a stable clock source (internal RC or external crystal) are required; verify the oscillator configuration bits in code. This page synthesizes distributor stock, parametric drop-in alternatives, and practical design guidance that goes beyond the manufacturer datasheet, giving engineers an at-a-glance view for sourcing and second-source decisions.

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PIC12LCE518T-04/SN - 8-Bit 4MHz PIC MCU 768B OTP | Microchip
PIC12LCE518T-04/SN

PIC12LCE518T-04/SN - 8-Bit 4MHz PIC MCU 768B OTP | Microchip

The Microchip PIC12LCE518T-04/SN is an 8-bit PIC microcontroller (MCU) in the PIC® 12C family featuring 768 bytes (512 x 12) of One-Time Programmable (OTP) program memory, 25 bytes of RAM, and 16 bytes of EEPROM data memory, all packaged in an 8-pin SOIC (SO-8/8-SOIC, 3.90mm body) with gull-wing leads and a 4MHz maximum internal clock speed. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and peripherals such as timers and reset controllers. In the embedded-system hierarchy, the PIC12LCE518 belongs to the 8-bit MCU category (PIC -> 8-bit MCU -> microcontroller -> embedded IC -> semiconductor), historically Microchip's lowest-pin-count, OTP-programmed line used in cost-sensitive, low-volume or fixed-function designs where in-circuit reprogrammability is not required. Key features include 33 single-word instructions (all single-cycle at 1 µs, except branches which take two cycles), six I/O pins (5 GPIO + 1 input-only per the standard 12C508/509 pinout convention), an internal RC oscillator, an 8-bit real-time clock/counter (TMR0) with 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation. The wide 2.5V to 5.5V supply-voltage range covers both 3.3V and 5V rails common in legacy and modern mixed-signal designs. The PIC12LCE518 uses a RISC Harvard-architecture core with a 12-bit instruction word, fabricated in CMOS for low static current draw. With only 33 instructions and a predictable single-cycle execution model (excluding branches), the device simplifies firmware development for timing-deterministic control loops. The OTP program memory is programmed once and cannot be erased, making the part ideal for high-volume, fixed-code products where the per-unit cost of the silicon is lower than a Flash equivalent. Typical applications include simple appliance timers, sensor signal-conditioning front-ends, low-end consumer remote controls, and battery-powered indicator boards. The 'L' in the part number designates the low-voltage (2.5V minimum Vdd) variant, and the 'E' indicates the EEPROM-data-memory member of the 12C5xx family. Its small 8-SOIC footprint and minimal external component count enable compact PCB layouts. When designing with the PIC12LCE518T-04/SN, consider that OTP memory cannot be re-programmed, so firmware must be fully validated on equivalent Flash parts (such as the PIC12F509 or PIC12F519) before committing to OTP. Choose the 'I' (industrial) temperature-grade variant for designs operating outside the commercial 0 °C to +70 °C range. Add a decoupling capacitor of at least 0.1 µF directly across VDD/VSS pins. This page synthesizes distributor pricing, parametric alternatives from the same PIC12C5xx OTP and PIC12F5xx Flash families, drop-in cross-references, and practical design notes not consolidated in the original datasheet.

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PIC12LCE518T-04I/SN - 4MHz 8-bit OTP MCU w/ EEPROM | SOIC-8
PIC12LCE518T-04I/SN

PIC12LCE518T-04I/SN - 4MHz 8-bit OTP MCU w/ EEPROM | SOIC-8

The Microchip Technology PIC12LCE518T-04I/SN is an 8-bit CMOS microcontroller from the PIC12C family featuring 768 bytes of One-Time Programmable (OTP) program memory (organized as 512 x 12 bits), 25 bytes of RAM, and 16 bytes of EEPROM data memory, all housed in an 8-pin SOIC (SN) package. Operating at a 4 MHz internal clock with a 1 us instruction cycle, this industrial-grade device runs from a 2.5V to 5.5V supply. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces into one package. The PIC12C family belongs to Microchip's PIC architecture - an 8-bit RISC core with Harvard memory organization. Within the broader taxonomy, this device sits as: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor IC. The 'L' in the part number indicates a low-power variant, while the 'E' denotes the inclusion of on-chip EEPROM data memory, a feature that distinguishes it from the OTP-only PIC12C5XX base line. Key differentiating features of the PIC12LCE518T-04I/SN include 33 single-word instructions (most executing in a single 1 us cycle), 6 I/O pins on an 8-pin package, an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, a Power-On Reset (POR), a Device Reset Timer (DRT), a Watchdog Timer (WDT) with its own on-chip RC oscillator, and an internal 4 MHz RC oscillator. The 'T' suffix indicates tape-and-reel packaging, while '-04I' specifies the 4 MHz speed grade and industrial temperature range (-40C to +85C). Typical applications for the PIC12LCE518T-04I/SN include low-cost consumer electronics, appliance controllers, sensor signal conditioning front-ends, simple LED drivers, battery-powered devices leveraging its low-power PIC core, and education/hobby projects that benefit from the PIC's small instruction set and inexpensive programmer ecosystem. Designers familiar with the PIC12C5XX instruction set can reuse code from legacy designs. When designing with this part, note that it is presently listed as obsolete on major distributor channels; engineers should evaluate same-package PIC12F5XX or PIC12CE5XX flash-based alternatives for new designs. Adequate decoupling (100 nF + bulk) and in-circuit serial programming (ICSP) pin access should be planned on the PCB. This page synthesizes distributor pricing, drop-in replacement MPNs sourced from cross-reference databases, and practical design notes - information not aggregated in any single manufacturer datasheet.

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PIC12LCE519-04/SN - 8-Bit OTP MCU 1.5KB | Microchip
PIC12LCE519-04/SN

PIC12LCE519-04/SN - 8-Bit OTP MCU 1.5KB | Microchip

The Microchip PIC12LCE519-04/SN is a low-voltage, 8-bit CMOS microcontroller from the PIC12C family, featuring 1.5KB (1K x 12) of One-Time-Programmable (OTP) program memory, 41 bytes of RAM, and 6 I/O pins. It operates at up to 4 MHz and is housed in an 8-pin SOIC (SN) package with a 0.154 inch (3.90 mm) body width. The 'L' prefix designates a low-voltage core (2.5V to 5.5V VDD), and the 'E' designates the enhanced EEPROM-data variant. The device is rated for commercial temperature (0C to +70C) and is suitable for cost-sensitive, space-constrained embedded designs. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data memory, and I/O peripherals on one integrated circuit. PIC microcontrollers use a RISC-based Harvard architecture and are programmed using Microchip's MPLAB X IDE and the MPLAB PM3 programmer. Within the semiconductor hierarchy, an MCU is a sub-category of digital IC, and the PIC12C family occupies the low-pin-count, ultra-small-footprint tier alongside the PIC10F, PIC12F, and PIC16C families. Key features of the PIC12LCE519 include four oscillator selections (including the internal 4 MHz RC oscillator with programmable calibration), a 25 mA source/sink capability per I/O pin for direct LED drive, a Power-on Reset (POR), a Watchdog Timer (WDT), and a 16-byte EEPROM data area. The RISC core executes most instructions in a single 1-microsecond cycle (at 4 MHz). Typical applications span low-cost consumer appliances, infrared remote controls, sensor signal conditioning, battery-powered timers, and automotive body electronics (non-safety). The 8-pin footprint also makes the part attractive as a one-time-programmable logic replacement in legacy systems and as a glue MCU between analog front-ends and wireless modules. When designing with this device, ensure the VDD range stays within 2.5V-5.5V and that decoupling is placed within 3 mm of the supply pin. The OTP memory means firmware is final after programming - choose this part for mature, stable code rather than iterative prototyping. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer page, helping engineers compare the PIC12LCE519-04/SN with its 'CE' sibling and identify pin-compatible substitutes for EOL designs.

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PIC12LCE519-04I/P - 8-Bit 4MHz CMOS MCU w/ EEPROM DIP-8 | Microchip
PIC12LCE519-04I/P

PIC12LCE519-04I/P - 8-Bit 4MHz CMOS MCU w/ EEPROM DIP-8 | Microchip

The Microchip Technology PIC12LCE519-04I/P is an 8-bit CMOS microcontroller with integrated EEPROM data memory, operating at up to 4 MHz instruction rate and packaged in a 300-mil through-hole DIP-8 (PDIP-8) outline. It executes 33 single-word instructions from an enhanced PIC16C5X core and embeds 1.5 KB (1K x 12) of OTP program memory plus 41 bytes of RAM. Six general-purpose I/O lines, an 8-bit real-time clock/counter (TMR0) with programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own on-chip RC oscillator are all integrated on-die. What is a PIC12 microcontroller? The PIC12 family is Microchip's baseline 8-bit CMOS microcontroller line based on the 14-bit enhanced mid-range architecture, optimized for low pin-count, low-power, cost-sensitive embedded tasks. It sits hierarchically under PIC16 (mid-range) and PIC18 (high-end 8-bit) in Microchip's 8-bit product tree. Variants such as the PIC12LCE519 add integrated serial EEPROM that can be read/written during runtime for parameter storage, distinguishing them from PIC12C5xx OTP-only siblings. Key features include industrial-grade -40C to +85C operation, 2.5V to 5.5V single-supply operation, low-power CMOS design, and a wide range of oscillator options (RC, LP, XT, HS, INTOSC). The "L" prefix indicates the low-voltage (2.5V) variant of the PIC12CE519 family; "04" denotes 4 MHz maximum clock; "I" indicates the industrial temperature grade; and "/P" specifies the PDIP-8 through-hole package. Typical applications include consumer appliance controllers, battery-powered sensor nodes, smart lighting controls, security alarm keypads, and educational/hobbyist projects. The integrated EEPROM makes it especially well-suited to designs that need to retain user settings, calibration constants, or tamper counters across power cycles without an external memory IC. Design tip: When migrating designs that were originally built around a PIC12C5xx OTP-only part, replacing it with the PIC12LCE519 lets you add 16 bytes of non-volatile storage at zero PCB cost - but you must still verify timing, oscillator mode, and ICD pin assignments match. This page synthesizes distributor pricing (as of 2026-09-16), same-family and cross-family drop-in alternatives, application notes, and design notes not aggregated in any single manufacturer datasheet.

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PIC12LCE519-04I/SM - 8-bit OTP MCU, 1.5KB EPROM, 4MHz | Microchip
PIC12LCE519-04I/SM

PIC12LCE519-04I/SM - 8-bit OTP MCU, 1.5KB EPROM, 4MHz | Microchip

The Microchip Technology PIC12LCE519-04I/SM is an 8-bit CMOS microcontroller with on-chip EPROM program memory, housed in an 8-pin SOIJ (SM) surface-mount package. It integrates 1.5 KB of one-time-programmable EPROM, 41 bytes of RAM, and 6 general-purpose I/O lines in a RISC core that executes 33 single-word instructions, most in a single 1 microsecond instruction cycle at 4 MHz clock input. The device supports a wide operating voltage range from 2.5 V to 5.5 V (with the 'L' low-voltage variant supporting 3.3 V/5 V operation), making it well suited for both battery-powered and mains-powered embedded designs. What is an 8-bit microcontroller? An 8-bit MCU is a small, self-contained computing device built around an 8-bit data path, integrating a CPU, program memory (ROM/EPROM/Flash), working RAM, and peripheral I/O on a single die. The PIC12LCE519 belongs to the PIC12C/LC5xx family of low-cost, low-pin-count Microchip microcontrollers, sitting within the broader PIC architecture taxonomy: PIC12 -> baseline 8-bit RISC -> 8-bit microcontroller -> microcontroller -> embedded IC -> semiconductor. The 'LC' prefix denotes the low-voltage CMOS process variant. Key differentiating features include an 8-bit real-time clock/counter (TMR0) with programmable prescaler, power-on reset (POR), device reset timer (DRT), watchdog timer (WDT) with dedicated on-chip RC oscillator, and integrated EEPROM-style data memory suitable for storing user configuration and calibration values. The '04' speed grade denotes 4 MHz maximum clock input, while the 'I' suffix designates the industrial operating temperature range. The architecture uses a Harvard-style memory layout with separate program and data buses, 12-bit wide instruction words, and 8-bit wide data paths. This allows single-cycle instruction execution for most opcodes while program branches take two cycles. The 6 I/O pins share peripheral functions including timer I/O and interrupt sources. Typical applications include low-cost consumer appliances, automotive body electronics (non-safety), battery-powered sensor nodes, simple LED drivers, remote-control transmitters, and small white goods controllers. The wide voltage tolerance allows direct connection to unregulated 3.3 V or 5 V rails without additional regulation. Industrial-grade temperature rating extends usability to harsh environments. When designing with the PIC12LCE519, ensure the oscillator configuration bits match the system clock requirement and consider the EPROM programming window for one-time-programmed production units. The SOIJ package requires standard surface-mount reflow; the J-Lead form factor improves solder joint reliability on automated assembly lines compared to standard SOIC gull-wing leads.

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PIC12LCE519-04I/SN - 8-bit 4MHz 1.5KB OTP MCU | Microchip
PIC12LCE519-04I/SN

PIC12LCE519-04I/SN - 8-bit 4MHz 1.5KB OTP MCU | Microchip

The Microchip PIC12LCE519-04I/SN is a low-power 8-bit CMOS microcontroller in the PIC® 12C family, featuring 1.5 KB (1K x 12) of One-Time-Programmable (OTP) program memory, 41 bytes of RAM, 6 I/O pins, and an internal 8-bit timer (TMR0) with programmable prescaler. The part runs from a 4 MHz oscillator and executes single-cycle instructions in 1 us, all housed in an 8-pin SOIC (SN) package with industrial temperature rating (-40C to +85C). What is a PIC® 12C microcontroller? The PIC® 12C series is a family of 8-pin, RISC-architecture microcontrollers from Microchip Technology designed for compact, cost-sensitive embedded control. Positioned in the broader hierarchy of microcontrollers -> embedded controllers -> semiconductor ICs, the 12C line emphasizes small footprint, low pin count, and OTP/EPROM/ROM program memory options, making it a baseline building block for simple logic-replacement and dedicated control tasks. Key features of the PIC12LCE519-04I/SN include Power-On Reset (POR), Device Reset Timer (DRT), Watchdog Timer (WDT) with its own on-chip RC oscillator, and an internal EEPROM data memory block (16 bytes typical, distinguishing it from the non-EEPROM PIC12C519). The 'L' prefix denotes the low-power variant, and 'E' denotes the EEPROM data memory - together allowing battery-friendly operation down to 2.5 V supply. Technically, the part uses a RISC Harvard architecture with only 33 single-word instructions; all instructions execute in one cycle except program branches (two cycles). This 4:1 speed advantage over comparable CISC parts simplifies deterministic timing. In-circuit serial programming (ICSP) is supported, enabling firmware updates after PCB assembly. Typical applications include battery-powered sensor nodes, automotive aftermarket accessories, appliance control boards, small white-goods controllers, and remote-control transmitters. The wide 2.5-5.5 V supply range accommodates both 3.3 V coin-cell systems and 5 V regulated rails. When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to VDD, and reserve GP2/T0CKI for wake-up or external clock if needed. Note that OTP memory cannot be re-programmed in-circuit - design with EPROM (PIC12CE519 JW windowed) variants for prototype bring-up. This page synthesizes verified distributor pricing, drop-in alternative MPNs, and practical design guidance not consolidated in the manufacturer datasheet, helping engineers evaluate supply-chain options and second-source risks as of 2026-09-16.

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PIC12LCE519T-04/SM - 8-Bit PIC MCU, 1.5KB OTP, 4MHz, 8-SOIJ
PIC12LCE519T-04/SM

PIC12LCE519T-04/SM - 8-Bit PIC MCU, 1.5KB OTP, 4MHz, 8-SOIJ

The Microchip Technology PIC12LCE519T-04/SM is an 8-bit RISC PIC microcontroller featuring 1.5KB (1Kx12) OTP program memory, 41 bytes of RAM, and 16 bytes of EEPROM data memory, housed in an 8-pin SOIJ (5.30mm body width) surface-mount package. It executes 33 single-word instructions, all single-cycle (1 microsecond at 4 MHz) except program branches which are two-cycle. According to the Microchip datasheet, the device provides five general-purpose digital I/O pins plus one input-only pin (six I/O total), with on-chip peripherals including Power-On Reset (POR), Watchdog Timer (WDT), and an internal 4 MHz RC oscillator option. What is a microcontroller? An MCU (microcontroller unit) is a single-chip computer containing a CPU core, program memory (ROM/Flash/OTP), working RAM, and integrated peripherals such as timers, ADC, and communication interfaces. The PIC12 family sits at the entry level of Microchip's 8-bit PIC portfolio, optimized for low pin count, low cost, and deterministic real-time control in space-constrained designs. The PIC architecture (modified Harvard RISC) traces its lineage to General Instrument's 1970s design and remains widely deployed in appliances, automotive sub-systems, and industrial sensors. Key specifications include 1.5KB OTP program memory, 41x8 RAM, 16x8 EEPROM, six I/O, 4 MHz maximum clock, and a brown-out detect / power-on reset supervisor. The device operates across 2.5V to 5.5V (LCE low-voltage variant) and is specified for the commercial 0C to +70C temperature range (the -04 speed grade denotes 4 MHz). Peripherals include one 8-bit timer/counter with prescaler, watchdog timer, and an internal oscillator calibration. The PIC12LCE519T-04/SM uses a 12-bit instruction word PIC core with a 2-stage pipeline, executing most instructions in a single instruction cycle. OTP (one-time programmable) program memory makes this part suited for production runs where code stability is locked at programming time. The 8-SOIJ package features a J-leaded outline for improved board-level reliability versus gull-wing SOIC. Typical applications include small appliance controllers, LED drivers, remote-control transmitters, sensor signal conditioning, and battery-powered consumer devices. Designers choose this part for cost-sensitive embedded tasks requiring 6 or fewer I/O lines. When designing with the PIC12LCE519T-04/SM, ensure the ICSP (In-Circuit Serial Programming) pins are accessible for production programming. The OTP variant cannot be reprogrammed, so production firmware must be verified before programming. For in-circuit reprogrammability, choose a Flash-based PIC12F variant instead. This page synthesizes distributor pricing, drop-in alternatives from the Microchip PIC12 family, and practical design notes not found in the manufacturer datasheet alone.

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PIC12LCE519T-04/SN - 8-bit MCU, 4MHz, 1.5KB OTP, SOIC-8 | Microchip
PIC12LCE519T-04/SN

PIC12LCE519T-04/SN - 8-bit MCU, 4MHz, 1.5KB OTP, SOIC-8 | Microchip

The Microchip Technology PIC12LCE519T-04/SN is an 8-bit CMOS microcontroller from the PIC12C/12LC family, integrating 1.5KB of OTP program memory, 41 bytes of RAM, and 6 I/O pins in an 8-pin SOIC package. The device operates at up to 4 MHz from a 2.5V to 5.5V supply, making it suitable for low-power commercial embedded applications. A microcontroller (MCU) is a single-chip computer that contains a processor core, non-volatile program memory, working RAM, and programmable I/O peripherals. The PIC12C/12LC family uses Microchip's RISC (Reduced Instruction Set Computer) Harvard architecture with a 33-instruction set, 12-bit instruction word, and 8-bit data path. These MCUs sit at the low-end of Microchip's PIC12C line, targeting simple control tasks where cost and small footprint outweigh the need for advanced peripherals; the 'LC' suffix denotes the low-power CMOS variant optimized for battery and sleep-mode operation, and the 'E' suffix indicates an OTP (One-Time-Programmable) memory derivative. Key features include an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator for reliable system recovery. The architecture provides 6 bidirectional I/O pins, an internal oscillator option, and a low-power SLEEP mode that drops current draw to microampere levels. Technically, the PIC12LCE519T-04/SN shares the same die as the PIC12CE519 family but is offered in the SOIC-8 (SN) package rather than PDIP. It supports in-circuit serial programming (ICSP) and operates across the commercial 0C to +70C temperature range, which is verified by the LCSC entry confirming 0C~+70C operation. The '04' speed suffix specifies the 4 MHz internal clock option, which sets instruction execution at 1 MIPS. Typical applications include appliance control, sensor signal conditioning, LED driver controllers, simple battery-powered timers, and low-cost consumer electronics. The compact SOIC-8 footprint and minimal external component count (a single decoupling capacitor plus optional reset pull-up) make the device attractive for space-constrained designs where MCU cost dominates the BOM. Designers should observe the 5.5V absolute-maximum supply rating and ensure decoupling is placed adjacent to the VDD pin. Because the PIC12LCE519T-04/SN uses OTP memory, firmware revisions require physical replacement of the part - in-system reprogramming is not supported - so production firmware must be frozen before final programming. This page synthesizes distributor pricing snapshots from DigiKey/Mouser/LCSC, drop-in same-package alternatives from the PIC12 family, and practical design notes that supplement the manufacturer datasheet with engineer-facing context.

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PIC12LCE519T-04I/SN - 8-bit OTP MCU, 1.5KB, 6 I/O, SOIC-8 | Microchip
PIC12LCE519T-04I/SN

PIC12LCE519T-04I/SN - 8-bit OTP MCU, 1.5KB, 6 I/O, SOIC-8 | Microchip

The Microchip PIC12LCE519T-04I/SN is an 8-bit CMOS microcontroller in the PIC12C/12CE family, integrating 1.5 KB of One-Time-Programmable (OTP) program memory with 41 bytes of data RAM, packaged in an 8-pin SOIC (SN) with tape-and-reel packaging. According to the Microchip datasheet, it runs at a 4 MHz oscillator input delivering 1 µs instruction cycle (single-cycle for most instructions, two-cycle for branches) and operates from 2.5 V to 5.5 V across the industrial -40 °C to +85 °C range. The device offers 6 general-purpose I/O pins, an 8-bit Timer0 with programmable prescaler, internal EEPROM data memory for non-volatile user storage, power-on reset, watchdog timer with dedicated on-chip RC oscillator, and device reset timer. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, ALU, program ROM, data RAM, and integrated peripherals. MCUs sit within the broader category of microcontrollers -> embedded processors -> semiconductors. The PIC12C/12CE family occupies the entry-level tier of the PIC architecture hierarchy, optimized for cost-sensitive, pin-constrained applications such as appliance controls, sensor interfaces, and consumer electronics. The OTP variant (vs. flash) is one-time programmable but supports EEPROM data memory for user-variable storage, a useful split for low-cost production where firmware is fixed at mask time but calibration constants must still be field-adjustable. Key features of the PIC12LCE519T-04I/SN include its 33 single-word RISC instruction set (vs. 35-50 on competitive CISC 8-bit MCUs), the integrated EEPROM data memory, the dedicated WDT RC oscillator that keeps the watchdog running even in sleep, and the low pin count of 6 I/O that enables designs in tiny SOIC-8 outlines. The "L" prefix denotes the low-voltage (2.5 V min) variant, and "04" specifies the 4 MHz oscillator maximum. Typical applications include low-cost remote control transmitters, thermostat front-end controllers, small appliance user interfaces, sensor signal conditioning with on-chip calibration, LED driver controllers, and battery-powered timers. The 2.5 V minimum supply extends battery life in 2-cell alkaline or single-cell lithium chemistries. When designing with this part, note that OTP memory cannot be reprogrammed in the field — use the PIC12F519 flash-based cousin for prototype or low-volume runs, then move to the PIC12LCE519 for cost-down production. The 41-byte RAM is small; recursive C compilers should be avoided in favor of assembly or tightly-written C. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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