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PIC12C509T-04/SM - 8-bit MCU, 1.5KB OTP, 4MHz, SOIJ-8 | Microchip
PIC12C509T-04/SM

PIC12C509T-04/SM - 8-bit MCU, 1.5KB OTP, 4MHz, SOIJ-8 | Microchip

The Microchip PIC12C509T-04/SM is an 8-bit CMOS microcontroller built on Microchip's baseline PIC12C core, offering 1.5KB of One-Time-Programmable (OTP) program memory, 41 bytes of RAM, and a 4 MHz internal oscillator in an 8-pin SOIJ surface-mount package. As a member of the PIC12C5xx family, it integrates a RISC-style instruction set, 6 general-purpose I/O pins, a watchdog timer, and a precision 4 MHz internal oscillator, all in a compact SOIJ-8 footprint suited for high-density consumer and industrial designs. A microcontroller (MCU) is a single-chip computer that combines a CPU, non-volatile program memory, volatile data memory, and configurable peripherals on a single die. The PIC12C509T-04 belongs to the baseline 8-bit PIC12 family, which is widely used for simple embedded control, sensor interfacing, and logic replacement. Within the system hierarchy, it sits under: microcontroller -> 8-bit MCU -> PIC12C family -> baseline PIC architecture -> RISC processor -> semiconductor IC. Key features include 33 single-word instructions, a 12-bit wide instruction set, a 2-level hardware stack, and an operating voltage range of 2.5V to 5.5V. The device supports in-circuit serial programming (ICSP) for OTP programming in production environments, and its low-power CMOS design draws only a few milliamps at full speed. Internal brown-out reset, power-on reset, and a watchdog timer provide robustness against firmware runaway and power transients in harsh embedded environments. The 4 MHz internal RC oscillator and 1 us instruction cycle time enable deterministic timing for control loops. Six bidirectional I/O pins (GP0-GP5) are shared with comparator inputs and other functions, allowing the chip to directly drive relays, LEDs, MOSFET gates, and sensor signal conditioning circuits. The OTP program memory supports code protection for IP security. Typical applications include consumer appliance control, battery chargers, fan controllers, low-end security keypads, sensor interface modules, and small appliance timers. The wide 2.5V-5.5V supply range simplifies designs powered by 3V button cells, USB-derived 5V, or unregulated 5V adapters. When designing with the PIC12C509T-04/SM, always provide a 0.1 uF decoupling capacitor directly between VDD and VSS within 5 mm of the pins. The MCLR pin requires a properly-bounded reset network - never leave MCLR floating in noise-prone environments. The 'T' suffix denotes tape-and-reel packaging, and the '/SM' suffix indicates the 8-pin SOIJ package. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet - enabling faster design-in and procurement decisions.

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PIC12C509T-04I/SM - 8-Bit 4MHz MCU 1.5KB OTP | Microchip
PIC12C509T-04I/SM

PIC12C509T-04I/SM - 8-Bit 4MHz MCU 1.5KB OTP | Microchip

The Microchip Technology PIC12C509T-04I/SM is an 8-bit baseline PIC microcontroller in an 8-pin SOIJ package, operating at up to 4 MHz with 1.5 KB of one-time programmable (OTP) program memory organized as 1K x 12 words and 41 bytes of data RAM. The device features six general-purpose I/O pins, an internal 4 MHz oscillator, a power-on reset (POR) circuit, and a watchdog timer (WDT) for reliable embedded control in compact form factors. The "T" suffix indicates tape-and-reel packaging and the "I" suffix specifies the industrial temperature range of -40C to +85C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals onto one die, optimized for deterministic control tasks. The PIC12C509 family belongs to Microchip's baseline PIC12C architecture, which uses a RISC-like instruction set with only 33 single-word/single-cycle instructions. This positions the PIC12C509 at the bottom of the PIC family hierarchy (baseline PIC12 -> mid-range PIC16 -> enhanced mid-range PIC16 -> PIC18 -> PIC24/dsPIC), offering the smallest package count and lowest cost for cost-sensitive, space-constrained applications. Key features include a 2.5V to 5.5V supply voltage range that allows direct operation from a single lithium cell or 3.3V/5V regulated rails, 200 ns instruction execution time, a programmable code protection bit, and an internal RC oscillator that eliminates the need for external clock components. The OTP program memory enables fast prototyping and short production runs without the tooling investment required for mask-ROM parts. Architecturally, the PIC12C509 uses a 12-bit instruction word with a two-stage pipeline, separate instruction and data buses (Harvard architecture), and a hardware stack for subroutine nesting. The 6 I/O pins are multiplexed with the GP3 input and the MCLR reset, providing flexible pin assignment for digital I/O, timer-driven events, and external interrupts. Typical applications include consumer appliance control, battery-powered sensor nodes, automotive interior accessories, LED driving, simple motor control, and replaceable logic in legacy designs. The wide voltage range and industrial temperature grade make it especially well-suited for harsh-environment embedded modules. When designing with this device, allocate sufficient OTP programming margin for late-stage firmware changes and ensure the GP3 pin is configured correctly because it is input-only. The internal oscillator is factory-trimmed but allows no further in-circuit calibration, so timing-sensitive designs should use the external oscillator mode. This page synthesizes distributor pricing, drop-in alternatives from the PIC12C5xx family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for cross-referencing the part against PIC12C509A and PIC12C508A family variants.

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PIC12C671-04/P - 8-Bit 4MHz OTP MCU w/ ADC | Microchip | PDIP-8
PIC12C671-04/P

PIC12C671-04/P - 8-Bit 4MHz OTP MCU w/ ADC | Microchip | PDIP-8

The Microchip Technology PIC12C671-04/P is an 8-bit CMOS one-time-programmable (OTP) microcontroller based on the PIC RISC architecture, integrating a 4-channel 8-bit A/D converter, 1.75KB (1024 x 14) of program memory, 128 bytes of RAM, and six general-purpose I/O pins in an 8-pin PDIP package. It operates from a 3.0V to 5.5V supply at clock speeds up to 4MHz, executing instructions in a 1-microsecond cycle (200ns at 20MHz for higher-speed grades). Per the verified DigiKey listing, the part is qualified ACTIVE and ships as the 8-PDIP variant. What is an 8-bit OTP microcontroller? An 8-bit OTP microcontroller is a small, low-cost, single-chip computer with a CPU datapath of 8 bits, on-chip non-volatile program memory that is one-time-programmable (can be written once and not erased), RAM for variables, integrated peripherals such as A/D converters, timers, and digital I/O. PIC microcontrollers sit within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. The 12C family represents Microchip's mid-range baseline of OTP PIC MCUs in 8-pin packages. The PIC12C671-04/P features a RISC CPU with only 35 single-word instructions, a hardware multiplier-free 8-bit ALU, 4MHz maximum clock at 4V-5.5V (or 10MHz at the same range for -10 speed grades), and DC to 4MHz operation at 3V-5.5V. On-chip peripherals include a 4-channel 8-bit ADC, an 8-bit timer/counter with 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator, and a power-on reset. The 6 I/O pins are individually direction-controlled and provide 25mA source/sink capability per pin, sufficient to drive LEDs directly. Typical applications for this device include low-cost consumer appliances, sensor signal conditioning with ADC readback, simple state machines for appliance control, battery chargers, automotive interior accessories (non-AEC-Q100 qualified), and any general-purpose 8-pin embedded control. The OTP memory suits production volumes where in-field firmware updates are not required. When designing with this part, observe that the OTP memory requires one-time programming at production; budget for an emulator (PIC12C671 ICD or ICE) during development. The 6 I/O pins are shared with the ADC, so plan analog channel assignments carefully. The internal RC oscillator can be used or an external crystal/RC selected via configuration bits.

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PIC12C671-04E/P - 8-bit 4MHz OTP MCU, 1.75KB | Microchip
PIC12C671-04E/P

PIC12C671-04E/P - 8-bit 4MHz OTP MCU, 1.75KB | Microchip

The Microchip Technology PIC12C671-04E/P is an 8-bit CMOS RISC microcontroller from the PIC12C family, featuring 4 MHz maximum operating frequency, 1.75 KB (1K x 14) of one-time-programmable (OTP) program memory, 128 bytes of RAM, and 6 I/O pins, all integrated in an 8-pin PDIP through-hole package. The "-04E" speed/temperature suffix indicates a 4 MHz oscillator grade with the extended industrial temperature range (-40C to +125C), while "/P" denotes the PDIP-8 package supplied in tube packaging. An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, memory, and peripherals. It belongs to the broader category of microcontrollers -> embedded processors -> semiconductors. PIC12C-series parts use Microchip's Harvard-architecture RISC core with 35 single-word instructions, delivering ~400 ns instruction execution at 4 MHz. PIC microcontrollers are widely used in cost-sensitive, low-pin-count embedded applications. Key features of the PIC12C671-04E/P include an integrated 4-channel 8-bit analog-to-digital converter (ADC), 8-bit timer/counter with programmable prescaler, internal 4 MHz RC oscillator (calibrated), an internal voltage reference, and an on-chip watchdog timer for reliable operation. The device operates from 3.0V to 5.5V and includes power-managed modes such as SLEEP for low-power standby. Its CMOS RISC architecture provides deterministic timing and low power consumption typical of PIC12C-series devices. Typical applications include automotive body controllers, appliance control boards, sensor signal conditioning, low-cost consumer electronics, and industrial automation where small pin count, OTP memory, and extended temperature tolerance matter. The device's 4-channel ADC simplifies analog sensor interfaces, and the 6 GPIO pins enable direct connection to switches, LEDs, and serial interfaces (via bit-banging). When designing with this MCU, choose clock source (internal RC or external crystal/RC) carefully - the internal calibrated RC eliminates external components. Reserve one I/O pin for ICSP (In-Circuit Serial Programming) if in-field firmware updates are needed. Decouple VDD with a 100 nF ceramic capacitor placed close to the pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC12C671-04I/MF - 8-Bit 4MHz OTP MCU 1.75KB | Microchip
PIC12C671-04I/MF

PIC12C671-04I/MF - 8-Bit 4MHz OTP MCU 1.75KB | Microchip

The Microchip Technology PIC12C671-04I/MF is an 8-bit PICmicro® CMOS microcontroller based on the RISC architecture, featuring 1.75KB (1K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 5 I/O pins. The device is housed in an 8-pin DFN-S exposed-pad (6x5 mm) surface-mount package and operates from 3.0V to 5.5V at a maximum clock rate of 4MHz. The industrial-grade -04I temperature rating covers -40°C to +85°C operation. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and peripheral interfaces into one package. The PIC12C671 belongs to the PIC12 family of 8-bit RISC microcontrollers, sitting within Microchip's hierarchy of 8-bit MCUs -> microcontrollers -> microprocessors -> embedded computing ICs. This category of device is used to implement programmable logic, sensor reading, and control loops in cost- and space-constrained designs. Key features of the PIC12C671-04I/MF include a 4MHz internal oscillator, on-chip Power-On Reset (POR), Watchdog Timer (WDT), and a 35-instruction instruction set with 12-bit-wide opcodes. The 8-bit RISC CPU executes most instructions in a single 1µs instruction cycle (at 4MHz Fosc), enabling deterministic real-time control. The integrated 4-channel 8-bit ADC supports analog signal acquisition without external components, and the device supports in-circuit serial programming (ICSP) for field updates. Typical applications include low-power embedded control nodes, consumer appliance user interfaces, sensor signal conditioning, LED driver controllers, automotive body electronics, and battery-powered remote controls. The PIC12C671-04I/MF is pin-compatible with the rest of the PIC12C67x family, allowing in-system migration to PIC12CE67x parts that add on-chip EEPROM. When designing with this part, allocate PCB copper area to the exposed thermal pad beneath the DFN package for proper heat dissipation. The OTP program memory requires the firmware image to be loaded at the factory or via ICSP before deployment; for prototypes requiring repeated erase/write cycles, consider the PIC12F675 flash-based counterpart in the same DFN-S package. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the standalone Microchip datasheet, helping engineers source and qualify the PIC12C671-04I/MF for production.

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PIC12C671-04I/P - 4MHz 8-Bit OTP MCU, 1.75KB | Microchip
PIC12C671-04I/P

PIC12C671-04I/P - 4MHz 8-Bit OTP MCU, 1.75KB | Microchip

The Microchip Technology PIC12C671-04I/P is an 8-bit CMOS OTP microcontroller built on Microchip's PIC RISC architecture, delivering 4 MHz CPU performance (250 ns instruction cycle) with 1.75 KB (1K x 14) of program memory, 128 bytes of RAM, and an integrated 8-bit 4-channel A/D converter in an 8-pin PDIP through-hole package. It exposes 6 I/O pins on an 8-pin footprint and operates from 2.5V to 5.5V, with the -04I/P industrial-temperature grade rated from -40C to +85C. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, ALU, program memory, data memory, and peripheral set, intended to handle control and simple DSP tasks in embedded systems. PIC microcontrollers belong to the Harvard-architecture RISC MCU family, separated by the parent category of microcontrollers within Integrated Circuits. The PIC12C family is Microchip's baseline 8-pin line, positioned below PIC16 and PIC18 families for cost-sensitive applications. PIC12C671-04I/P is an OTP (one-time-programmable) variant, meaning program memory is written once and is not electrically erasable; the Flash-based counterpart is the PIC12F675, which is recommended by Microchip as the modern replacement. Key features include 35 single-word instructions, 8-bit timer/counter (TMR0) with 8-bit prescaler, watchdog timer with on-chip RC oscillator, power-on reset, power-saving Sleep mode, in-circuit serial programming (ICSP), and four analog input channels multiplexed onto GP0/GP1/GP3/GP4. The 4 MHz oscillator option (-04) supports a 1 us instruction execution time at 4 MHz. Brown-out reset is not present on the PIC12C671; the chip relies on power-on reset and the internal RC watchdog for reliable startup. The 6 I/O pins each source/sink up to 25 mA, sufficient to drive LEDs directly. Typical applications include battery chargers, security systems, remote transmitters, low-end sensors, smart cards, and small appliance controls. The integrated ADC eliminates the need for an external analog front end in simple sensor-interface designs. Industrial users favor the -04I/P variant for its wide temperature range and through-hole PDIP packaging that simplifies hand-prototyping and field repair. When designing with the PIC12C671-04I/P, allocate one I/O pin (GP3) as the ICSP clock and another (GP1) as ICSP data when in-circuit programming is required. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin. For analog readings, add a 100 nF + 10 uF decoupling pair and an RC anti-aliasing filter on each analog input. Note that OTP parts cannot be firmware-updated in the field, so design with a Flash equivalent (PIC12F675) if post-production reprogramming is required. This page combines distributor pricing, drop-in same-package alternatives, and engineering design notes that complement but do not replace the manufacturer datasheet.

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PIC12C671-10/P - 8-bit OTP MCU 1.75KB 10MHz 6 I/O | Microchip
PIC12C671-10/P

PIC12C671-10/P - 8-bit OTP MCU 1.75KB 10MHz 6 I/O | Microchip

The Microchip PIC12C671-10/P is an 8-bit CMOS OTP-based microcontroller built on the PIC architecture, delivering 10MHz (10 MIPS) performance from a Harvard RISC core with only 35 single-word instructions. The device integrates 1.75KB of one-time-programmable program memory, 128 bytes of RAM, 6 digital I/O pins, and a 4-channel 8-bit ADC into an 8-pin PDIP (through-hole) package. Operating from 3.0V to 5.5V with industrial temperature range support, the PIC12C671-10/P targets cost-sensitive embedded designs that need deterministic real-time performance. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, working RAM, and configurable peripherals designed for embedded control. MCUs sit beneath microprocessors in the system hierarchy (microprocessor -> microcontroller -> SoC -> semiconductor) and are the dominant building block of consumer, industrial, and automotive electronics. Within the 8-bit class, the PIC12C family occupies the low-pin-count, OTP-programmable niche and is widely used where field reprogramming is unnecessary and unit cost is paramount. Key features include 4MHz internal RC oscillator option (selected at programming), 4-channel 8-bit ADC with programmable reference, one 8-bit timer/counter plus one Watchdog Timer, 6 bidirectional I/O pins shared with ADC inputs, power-on reset, brown-out detect, and in-circuit serial programming (ICSP). The 8-pin PDIP footprint enables retrofit into legacy designs and breadboard prototyping without surface-mount tooling. The PIC12C671 employs a 14-bit instruction word with Harvard bus architecture (separate program and data paths), which fetches and executes each instruction in 400 nanoseconds at 10MHz. Compared to von-Neumann CISC designs of equivalent pin count, this yields roughly 2:1 throughput per MHz while consuming only milliamps at 5V, 4MHz typical. The architecture also supports interrupt-driven design with a single hardware interrupt vector. Typical use cases include appliance control front-ends, sensor signal conditioning front-ends, LED driving controllers, simple battery chargers, toys, and remote-control encoder logic. The OTP memory makes the part suited for high-volume production where firmware is stable and traceability of programmed parts is acceptable. For field-upgradable firmware, the PIC12F675 flash variant in the same 8-pin footprint is the recommended migration path; Microchip explicitly recommends PIC12F675 on its product page. When designing with this part, ensure MCLR is tied to VDD through a 10kΩ resistor (or driven by the programmer for ICSP), and supply the ADC reference voltage via a low-impedance source to prevent conversion errors. Decouple VDD with 100nF minimum placed within 5mm of the supply pin. This page synthesizes distributor pricing, drop-in same-package alternatives (PIC12C671T-10E/P, PIC12C671-04/P), and practical design notes not found in the manufacturer datasheet summary.

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PIC12C671-10/SM - 8-bit MCU 1.75KB OTP 10MHz SOIJ-8 | Microchip
PIC12C671-10/SM

PIC12C671-10/SM - 8-bit MCU 1.75KB OTP 10MHz SOIJ-8 | Microchip

The Microchip Technology PIC12C671-10/SM is an 8-bit PIC12C-series CMOS microcontroller with 1.75KB (1K x 14) OTP program memory, 128 bytes of RAM, an integrated 8-bit A/D converter, and a 10MHz internal instruction clock (400ns instruction cycle), all packaged in an 8-pin SOIJ surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/OTP/Flash), data memory (RAM), and peripherals such as timers, communication interfaces, and analog-to-digital converters on a single die. Within the embedded-system taxonomy, an MCU belongs to the broader category of microprocessors -> computing ICs -> integrated circuits. The PIC12C67X family specifically targets cost-sensitive 8-pin applications where board area and BOM count must be minimized. Key features include a RISC architecture with only 35 single-word instructions, an on-chip 4-channel 8-bit ADC, an internal 4MHz RC oscillator (selectable), a wide operating voltage range of 2.5V to 5.5V, and ultra-low-power operation with <1µA typical standby current. The SOIJ-8 (Small Outline IC, J-leaded) package is the surface-mount variant of the 8-pin DIP form factor used by Microchip's baseline PIC12Cxx family. The PIC12C671 uses a Harvard-architecture RISC core with separate program and data buses, executing one instruction per instruction cycle (4 clock cycles). The 10MHz rating (10 suffix) corresponds to a 10MHz oscillator input and a 2.5 MIPS instruction throughput. The OTP (one-time-programmable) program memory is programmed with the final firmware and cannot be erased, which suits production-grade deployments but not prototyping. Typical applications include appliance controls, sensor signal conditioning, LED driver controllers, remote transmitters, and battery-powered instruments. The 8-pin SOIJ format is well-suited for compact surface-mount designs and is footprint-compatible with the PIC12C672/PIC12CE673/PIC12CE674 family members, easing migration paths. When designing with this device, ensure the MCLR reset line has a proper pull-up and that ADC input source impedance stays below 10kΩ for adequate acquisition time. Designers should also note that this part is recommended for new designs to use the PIC12F675 instead, which offers Flash memory and enhanced peripherals in a similar footprint. This page synthesizes distributor pricing, drop-in alternatives drawn from Microchip's PIC12 family and cross-brand references, and practical design notes not aggregated on a single manufacturer page.

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PIC12C671-10E/P - 8-bit MCU, 1.75KB OTP, 10MHz, 8-PDIP | Microchip
PIC12C671-10E/P

PIC12C671-10E/P - 8-bit MCU, 1.75KB OTP, 10MHz, 8-PDIP | Microchip

The Microchip Technology PIC12C671-10E/P is an 8-bit CMOS RISC microcontroller with 1.75KB of one-time-programmable (OTP) program memory, 128 bytes of RAM, six I/O pins, and an integrated 8-bit A/D converter, housed in an 8-pin PDIP (through-hole) package rated for 10MHz operation and the extended industrial temperature range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces on one IC. The PIC12C671 belongs to the Microchip PIC12 family of baseline/Mid-Range 8-bit RISC microcontrollers, sitting within the hierarchy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor IC. It uses a 14-bit instruction word, Harvard architecture, and a 35-instruction set designed for deterministic, compact code generation. Key features include 1.75KB (typically 1024 x 14-bit words) of OTP program memory, 128 bytes of data RAM, a 4-channel 8-bit A/D converter with internal bandgap reference, an 8-bit timer/counter (TMR0), a Watchdog Timer with its own on-chip RC oscillator, an internal 4MHz RC oscillator, and an external interrupt source. The device operates across 2.5V to 5.5V (3.3V/5V operation explicitly supported), consumes very low operating current, and is offered in the industrial/automotive temperature grade (the "E" suffix in the part number denotes extended temperature range). Architecturally, the PIC12C671 is fully static and uses a two-stage pipeline to fetch and execute instructions in a single cycle (except branches). The integrated peripherals, including the A/D converter with selectable reference sources, allow direct interface to analog sensors without external signal-conditioning components, making the device well-suited to small-form-factor embedded products where PCB real estate is at a premium. Typical applications include battery chargers, sensor signal conditioning, appliance control, security systems, automotive body electronics, and small consumer devices. The wide operating voltage range and integrated A/D converter particularly suit battery-powered or sensor-interface applications. When designing with this part, note that the OTP memory is one-time programmable; for development, use a windowed (JW) or Flash variant (PIC12F675 is the recommended modern replacement per Microchip's product page). The device requires proper configuration word programming, including oscillator selection and Watchdog Timer enable/disable. This page synthesizes Microchip product specifications, current distributor pricing as of 2026-09-15, drop-in replacement alternatives, and practical design guidance not consolidated on any single datasheet page.

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PIC12C671-10I/MF - 8-Bit 10MHz OTP MCU, 8-DFN-S | Microchip
PIC12C671-10I/MF

PIC12C671-10I/MF - 8-Bit 10MHz OTP MCU, 8-DFN-S | Microchip

The Microchip Technology PIC12C671-10I/MF is a 8-bit RISC PIC microcontroller with 1.75KB (1K x 14) One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and an integrated 4-channel 8-bit ADC, packaged in an 8-pin VDFN Exposed Pad (6x5 mm) surface-mount package. It executes instructions at up to 10MHz and operates from a 3.0V to 5.5V supply across the industrial temperature range of -40C to +85C. A PIC microcontroller (Programmable Interface Controller) is a Harvard-architecture 8-bit MCU family from Microchip Technology that combines a RISC CPU core, non-volatile program memory, RAM, and integrated peripherals such as timers, ADC, and comparators into a single IC. Within the broader embedded hierarchy, PIC MCUs sit under the umbrella of microcontrollers, which themselves belong to integrated circuits and to the semiconductor product family. The PIC12C6xx sub-family is positioned as one of the smallest and lowest-pin-count PIC offerings, optimized for compact, cost-sensitive applications where small PCB area and minimal external component count matter most. Key specifications for the PIC12C671-10I/MF include 5 digital I/O pins (the remaining pins are dedicated to VDD, VSS, MCLR, and OSC), an internal RC oscillator, an internal Power-on Reset (POR) circuit, a Watchdog Timer (WDT) for code integrity, and an 8-bit ADC with 4 input channels. The device uses the standard mid-range PIC14 instruction set (35 instructions), providing predictable timing and deterministic code execution well suited to real-time control loops. Architecturally, the PIC12C671 separates program and data buses (Harvard), allowing simultaneous instruction fetch and operand access. The OTP program memory is one-time programmable, meaning each unit is dedicated to a single firmware image - ideal for production runs. Built-in peripherals such as the 8-bit ADC and timer reduce BOM count, and the internal oscillator eliminates the need for an external crystal in many designs, allowing a complete application to be realized with the IC and a few passive components. Typical applications for the PIC12C671-10I/MF include battery chargers, smart sensors, low-end appliance controllers, personal-care devices, automotive interior lighting modules, and simple closed-loop control subsystems such as fan speed controllers and small DC motor drivers. Designers also deploy the part in edge-of-network IoT sensor nodes where 8-bit processing is sufficient. When designing with this device, attention should be paid to the OTP memory constraint - firmware must be finalized before production programming, since OTP cannot be reprogrammed in-circuit. Programming is performed via the ICSP interface using tools such as MPLAB PM3. Adequate decoupling and proper layout of the exposed thermal pad to the ground plane will improve ADC noise performance. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in same-package alternatives from the PIC12C family, and practical design notes that are not found in the standalone manufacturer datasheet.

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PIC12C671/JW - 8-bit MCU, 1.75KB EPROM, 10MHz, 8-CDIP | Microchip
PIC12C671/JW

PIC12C671/JW - 8-bit MCU, 1.75KB EPROM, 10MHz, 8-CDIP | Microchip

The Microchip Technology PIC12C671/JW is a 8-bit RISC CMOS microcontroller with 1.75 KB (1K x 14) of UV-erasable EPROM program memory, 128 bytes of RAM, and 5 programmable I/O pins plus one input-only pin, housed in an 8-pin Ceramic DIP (CDIP) with an erase window. The device runs up to 10 MHz (400 ns instruction cycle) from a 3.0 V to 5.5 V supply at commercial 0 °C to 70 °C temperature grade. The /JW suffix indicates the ceramic windowed package, designed for prototyping and field-reprogrammable flows where code must be erased under UV light. What is a PIC12C-series microcontroller? The PIC12C67X family belongs to Microchip's PIC microcontrollers, which are 8-bit RISC Harvard-architecture MCUs with integrated peripherals. PIC12C parts use a 14-bit instruction word and sit in the low-pin-count (8-pin) category, bridging the gap between discrete logic and larger 16- and 32-bit microcontrollers. They are widely used as glue logic, sensor conditioners, and standalone controllers where a few I/O pins plus on-chip A/D conversion replace a handful of analog and digital ICs. Key features of the PIC12C671 include four channels of 8-bit A/D conversion (replacing external ADCs in many designs), 128 bytes of SRAM, an 8-bit timer/counter (TMR0) with 8-bit programmable prescaler, and a watchdog timer with on-chip RC oscillator for reliable operation. The device provides five I/O pins with individual direction control, internal pull-ups selectable via software (GPPU bit), and current sink/source capability suitable for direct LED drive. Architecturally, the PIC12C671 uses a Harvard bus with separate program and data paths, an 8-level deep hardware stack, and a single-cycle instruction decoder that keeps most instructions executing in one instruction cycle (400 ns at 10 MHz). This deterministic instruction timing makes the part predictable for real-time control loops without pipeline stalls. Typical applications include low-cost sensor interfaces, battery chargers, small appliance controllers, automotive body modules (industrial-grade variants), and any drop-in upgrade path from PIC12C508/509 designs needing more program memory and on-chip A/D conversion. The windowed package supports iterative firmware development where code is repeatedly erased and reprogrammed during validation. When designing with this part, note that the 8-CDIP windowed package has a ceramic lid that must be removed for UV erasure; field-deployed units should migrate to the OTP version (PIC12C671/P) or the recommended successor PIC12F675 (Flash-based, lower cost). Per the manufacturer datasheet, programming requires the PRO MATE II or PICSTART Plus with an 8-pin DIP adapter. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC12C671T-04E/SM - 4MHz 8-bit OTP MCU, 1.75KB | Microchip
PIC12C671T-04E/SM

PIC12C671T-04E/SM - 4MHz 8-bit OTP MCU, 1.75KB | Microchip

The Microchip PIC12C671T-04E/SM is an 8-bit RISC microcontroller in the PIC12C family, featuring 1.75KB (1K x 14 words) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, an integrated 8-bit A/D converter, and 6 programmable I/O lines, all housed in an 8-pin SOIJ (SM) package rated for the extended industrial temperature range. The "-04" suffix designates a 4MHz maximum clock, the "E" indicates the extended (-40C to +125C) temperature grade, the "T" denotes tape-and-reel packaging, and "/SM" specifies the 8-SOIJ surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, I/O peripherals, and often analog blocks into one IC. Within the broader hierarchy, the PIC12C671 belongs to the 8-bit PIC family -> PIC12C sub-family -> PIC12C67x series -> microcontroller -> embedded microcontroller -> semiconductor IC. MCUs execute user firmware stored in non-volatile memory and are the central control element in virtually every embedded product, from automotive sensors to consumer appliances. The PIC12C671T-04E/SM is built on Microchip's PIC RISC architecture with only 33 single-word instructions, most executing in a single instruction cycle. Its integrated peripherals include an 8-bit successive-approximation A/D converter with four multiplexed input channels, an 8-bit timer/counter (TMR0) with an 8-bit prescaler, a watchdog timer with its own on-chip RC oscillator, and a power-on reset / brown-out detection circuit. Programmable code protection and an In-Circuit Serial Programming (ICSP) interface simplify field updates. Typical applications include low-pin-count embedded controllers, sensor signal conditioning, battery chargers, automotive body and chassis nodes (extended temp), small appliance controls, and any space-constrained design requiring A/D conversion. The pic12c671T-04E/SM is well suited for cost-sensitive, low-complexity logic replacement and analog front-end digitization where its 4MHz instruction rate is sufficient. When designing with this device, note that it operates from 3.3V to 5.5V; programmers such as the MPLAB PM3 or PICkit are required for OTP programming. In-Circuit Serial Programming (ICSP) requires only two I/O lines plus VDD/VSS, allowing firmware to be loaded after PCB assembly. Decouple VDD with a 0.1uF ceramic capacitor placed within 5 mm of the pin. This page synthesizes verified distributor pricing, drop-in same-family alternatives, design notes, and parametric comparisons not found in the manufacturer datasheet alone.

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PIC12C671T-04I/SM - 8-Bit OTP MCU, 4MHz, 1.75KB | Microchip
PIC12C671T-04I/SM

PIC12C671T-04I/SM - 8-Bit OTP MCU, 4MHz, 1.75KB | Microchip

The Microchip PIC12C671T-04I/SM is an 8-bit, fully-static CMOS microcontroller with an integrated 8-bit A/D converter, 1.75KB (1K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 6 programmable I/O pins, all housed in an 8-pin SOIJ (SM) package. It operates at a maximum clock speed of 4 MHz, supports supply voltages from 3.0 V to 5.5 V, and is qualified for the industrial temperature range of -40C to +85C, making it well-suited for cost-sensitive embedded control tasks. What is a PIC 8-bit microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (ROM/OTP/Flash), volatile data memory (RAM), and a configurable set of peripheral interfaces such as I/O ports, timers, and analog-to-digital converters (ADCs). The PIC12C67x family belongs to Microchip's mid-range 8-bit RISC architecture, which is widely used in consumer appliances, automotive subsystems, industrial sensors, and battery-powered instruments. Within the broader semiconductor taxonomy, it sits as: PIC12C671 -> PIC12C family -> PIC10/12/16 mid-range -> 8-bit MCU -> microcontroller -> integrated circuit. Key features include 35 single-word instructions (200 ns instruction cycle at 4 MHz), 8-bit ADC with 4 input channels, four oscillator options (RC, LP, XT, HS), an 8-bit real-time clock/counter with 8-bit prescaler, and a watchdog timer for reliable unattended operation. The OTP program memory supports in-circuit programming via Microchip's ICSP interface, while the brown-out detect and power-on reset blocks provide robust supply-voltage supervision. Maximum power dissipation is specified at 700 mW. The architecture combines a Harvard-bus CPU with a 14-bit instruction word and separate 8-bit data path, which is characteristic of the mid-range PIC families. The integrated ADC uses successive-approximation register (SAR) conversion with 8-bit resolution, suitable for low-bandwidth sensor sampling such as thermistor bridges, potentiometers, and battery monitors. The device supports in-system debugging through Microchip's ICD and the MPLAB PM3 programmer, which work with the entire PIC12C6xx line. Typical applications include appliance control boards, sensor signal conditioning, simple closed-loop fan or pump controllers, automotive interior accessories, battery chargers, security keypads, and low-cost consumer products. The 6 I/O pins are sufficient for driving small relays, LED indicators, and UART-style bit-banged communication. A key design consideration is OTP vs Flash: because the PIC12C671 uses one-time-programmable memory, firmware must be fully validated before programming - the part cannot be reprogrammed in the field. Designs targeting field upgrades should consider the PIC12F/F67x Flash-based siblings. The SOIJ (SM) package is a small-outline IC with J-leads, suitable for both hand-soldered prototypes and high-volume SMT lines. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes - information not consolidated in the manufacturer datasheet alone.

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PIC12C671T-10/SM - 8-Bit 10MHz OTP MCU with ADC | Microchip
PIC12C671T-10/SM

PIC12C671T-10/SM - 8-Bit 10MHz OTP MCU with ADC | Microchip

The Microchip Technology PIC12C671T-10/SM is an 8-bit, 10MHz CMOS RISC microcontroller in the PIC12C67x family, packaged in an 8-pin SOIJ (also referenced as 8-SOIC 5.30mm width) and featuring 1.75KB (1K x 14 words) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, six general-purpose I/O pins, and an on-chip 8-bit analog-to-digital converter. The /SM suffix denotes the surface-mount SOIJ package and the T-suffix denotes tape-and-reel packaging for high-volume assembly lines. What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a family of 8-, 16-, and 32-bit RISC-based microcontrollers originally designed by General Instrument's microelectronics division and now produced by Microchip Technology. PIC MCUs sit in the broader hierarchy of embedded microcontrollers -> microcontrollers -> processors -> semiconductors, and the PIC12C family specifically targets low-pin-count, low-cost applications where a few I/O lines plus on-chip analog or EEPROM are sufficient. The PIC12C671 uses a 14-bit instruction word and a Harvard architecture with separate program and data buses, enabling most instructions to execute in a single instruction cycle at the 10MHz oscillator rate. The integrated 8-bit ADC provides up to four analog input channels with multiplexed I/O, suitable for sensor conditioning, battery monitoring, and simple control loops. Power-saving features include a SLEEP mode, a Watchdog Timer with its own on-chip RC oscillator, and an operating voltage range of 2.5V to 5.5V. Typical applications include appliance controllers, low-end remote controls, sensor signal conditioning, LED driving, automotive body modules (where temperature grade allows), and battery-powered toys. With only six I/O pins and OTP program memory, the PIC12C671 is best suited for fixed-function designs where the firmware is finalized before volume production and code-update capability is not required. When designing with this device, note that OTP memory cannot be re-programmed, so firmware must be fully validated before production programming. Decoupling capacitors (typically 0.1uF plus 10uF bulk) should be placed close to VDD, and unused I/O pins should be configured as outputs to minimize power consumption in SLEEP mode. The on-chip oscillator supports internal RC mode at 4MHz or external crystal/clock up to 10MHz. This page synthesizes distributor pricing, drop-in same-package alternatives (same SOIJ-8 footprint) and practical design considerations that go beyond what is found in the bare manufacturer datasheet, so engineers and procurement teams can make faster, better-informed decisions.

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PIC12C671T-10E/SM - 8-Bit 10MHz OTP MCU with ADC | Microchip
PIC12C671T-10E/SM

PIC12C671T-10E/SM - 8-Bit 10MHz OTP MCU with ADC | Microchip

The Microchip Technology PIC12C671T-10E/SM is an 8-bit CMOS RISC microcontroller based on the PIC12 core, delivering 10 MIPS throughput at a 10 MHz oscillator in an 8-pin SOIJ surface-mount package. It integrates 1.75 KB (1K x 14) of One-Time Programmable (OTP) program memory and 128 bytes of RAM, plus a 4-channel 8-bit analog-to-digital converter, a watchdog timer, and power-on reset. The tape-and-reel 'T' suffix and 'SM' package code identify the SOIJ-8 production form factor. An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, program memory, data memory, and peripherals on one die, designed for embedded control tasks where deterministic timing, low cost, and small footprint matter more than raw compute throughput. Within the broader taxonomy, the PIC12C671 sits in the hierarchy MCU -> 8-bit microcontroller -> PIC12 family -> Microchip PIC microcontrollers, and is generally classified as a baseline-class PIC designed for cost-sensitive analog and I/O-centric applications. Key features include instruction execution in a single 200 ns cycle at 10 MHz, six general-purpose I/O pins shared with analog inputs, an internal 4 MHz RC oscillator option, a programmable code-protection scheme, and a wide 3.0 V to 5.5 V supply range. In-system serial programming is supported via GP0/GP1, allowing firmware updates after PCB assembly. The OTP program memory is factory-programmable and cannot be erased, making this part suitable for low-to-medium volume production. Architecturally, the PIC12C671 uses a Harvard RISC core with separate program and data buses, providing deterministic interrupt response and single-cycle instruction execution. Its CMOS design delivers low power consumption with typical active current of a few milliamperes, suitable for always-on or battery-backed designs where power budget is tight. Typical applications include appliance control front-ends, sensor signal conditioning, automotive body modules, simple closed-loop fan or valve controllers, and battery chargers that require local A/D conversion. Designers select this part when they need analog sensing plus a small glue-logic footprint in fewer than 10 pins. A critical design consideration is the OTP memory: the program is locked in after the first write and cannot be changed, so the firmware must be fully validated before programming. Designers should also budget for the programming adapter cost (e.g., MPLAB PM3) in low-volume prototypes, and consider migrating to the flash-based PIC12F675 (which Microchip actively recommends as the modern replacement) for new designs.

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PIC12C671T-10I/MF - 8-Bit 10MHz MCU 1.75KB OTP 8-DFN | Microchip
PIC12C671T-10I/MF

PIC12C671T-10I/MF - 8-Bit 10MHz MCU 1.75KB OTP 8-DFN | Microchip

The Microchip Technology PIC12C671T-10I/MF is a member of the PIC12C family of 8-bit CMOS microcontrollers with on-board A/D converter, offered in an 8-pin Dual Flat No-lead (8-DFN-S, 6x5 mm) surface-mount package and supplied in Tape & Reel. The device integrates 1.75 KB (1K x 14) of One-Time Programmable (OTP) program memory and 128 bytes of RAM, executes one instruction per cycle at up to 10 MHz oscillator frequency, and exposes 5 general-purpose digital I/O pins plus 4-channel 8-bit A/D conversion through the same pads. Industrial temperature grade (-40C to +85C), low power CMOS process, internal oscillator options, and an in-circuit serial programming interface round out the feature set. An 8-bit microcontroller (MCU) is a small, single-chip computer built around an 8-bit data path, typically used in embedded applications that demand deterministic behaviour, low cost, and modest code size. The PIC12C671T sits at the entry-level of Microchip's 8-bit portfolio: PIC -> 8-bit microcontroller -> PIC10/12/16 family -> PIC12C sub-family. It is one of the earliest 8-pin OTP devices and remains in production as a cost-optimized solution for simple control tasks where an external crystal is unnecessary. Key features that distinguish this device in its class include its 10 MHz instruction throughput (4 MHz oscillator x 4 PLLx), internal RC oscillator for low-BOM-count designs, 4-channel 8-bit ADC for direct sensor interfacing, and the wide 2.5 V to 5.5 V operating range that supports both 3.3 V and 5 V rails. Brown-out reset, watchdog timer, power-on reset, and code protection add robustness for unattended appliances, while the in-circuit serial programming (ICSP) interface permits firmware updates after PCB assembly. The PIC12C671T-10I/MF uses a 14-bit instruction word and a Harvard architecture with separate code and data paths, achieving predictable interrupt latency and compact code density that often translates to smaller OTP images than competing 8-bit cores. CMOS design with low-power Sleep mode and a typical 2 mA active current at 5 V keeps it suitable for line-powered or battery-assisted duty cycles. Typical applications for this part include small appliance controllers, sensor signal conditioning front-ends, automotive accessory modules, LED driver sequencers, and educational/development boards where the 8-pin footprint, internal oscillator, and minimal external component count simplify layout and reduce total BOM cost. Designers also use it as a housekeeping companion to a larger host MCU. When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to VDD and provide adequate ground copper. The internal oscillator is trimmed at the factory but may need software fine-tuning per board to meet timing-sensitive serial protocols; for tight UART tolerances an external crystal is recommended. This page consolidates distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping procurement and engineering teams evaluate supply risk and design trade-offs in a single view.

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PIC12C672-04/P - 8-Bit 4MHz OTP MCU with ADC | Microchip
PIC12C672-04/P

PIC12C672-04/P - 8-Bit 4MHz OTP MCU with ADC | Microchip

The Microchip PIC12C672-04/P is an 8-bit CMOS RISC microcontroller in the PIC12C family, featuring a 4 MHz instruction clock, 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, an on-chip 8-bit A/D converter, and six general-purpose I/O pins, all housed in an 8-pin PDIP through-hole package. It executes instructions in 400 ns (one instruction cycle = four oscillator periods), and its 35 single-word instruction set simplifies firmware development and reduces code footprint. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces such as ADC, timers, and I/O ports. The PIC12C672 sits within the broader taxonomy of microcontroller -> 8-bit microcontroller -> RISC microcontroller -> embedded controller -> semiconductor. Its Harvard architecture, separate program and data buses, and 14-bit instruction word place it firmly in Microchip's mid-1990s mid-range PIC family, optimized for cost-sensitive analog-sensing and control applications. Key features include an internal 4 MHz oscillator option (or external clock), a 4-channel 8-bit ADC, an 8-bit timer/counter with prescaler, a watchdog timer with its own on-chip RC oscillator, and an operating voltage range of 2.5 V to 5.5 V (extended) or 3.0 V to 5.5 V (commercial/industrial). The device offers low power consumption with typical sleep currents below 1 microampere, programmable weak pull-ups on GPIO, and code protection to safeguard intellectual property. The PIC12C672 uses a RISC pipelined architecture with a 14-bit program word, allowing most instructions to execute in a single 200 ns instruction cycle at 20 MHz (or 1 microsecond at 4 MHz). This combines predictable interrupt latency with deterministic throughput for sensor reading and PWM-style bit-banging. The integrated ADC samples up to four channels with 8-bit resolution, suitable for thermistor, potentiometer, and battery-monitoring inputs. Typical applications include battery chargers, smoke detectors, sensor conditioning front-ends, low-end remote controls, appliance timers, and any cost-constrained embedded design requiring modest analog inputs. The 8-pin PDIP format supports easy breadboarding, hobbyist projects, and legacy through-hole PCB layouts. When designing with this part, consider that the OTP memory cannot be re-programmed, so firmware revisions require a new part. Migration to flash-based PIC10F/PIC12F/PIC16F equivalents (such as PIC12F675 with comparable pinout) is recommended for new designs. Decoupling capacitors of 0.1 microfarad should be placed close to VDD with a 10 microfarad bulk capacitor on the supply rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC12C672-04/SM - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
PIC12C672-04/SM

PIC12C672-04/SM - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC12C672-04/SM is an 8-bit PIC® 12C-series CMOS microcontroller with a 4 MHz instruction clock, 3.5 KB (2K × 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 6 I/O pins, housed in an 8-pin SOIJ (Small-Outline IC, J-leaded) surface-mount package. Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral interfaces on one die. PIC® 12C parts sit at the low-pin-count end of Microchip's mid-range 8-bit PIC family, optimized for cost-sensitive embedded control where 6 GPIO, an 8-bit ADC, and timers are sufficient. The architecture is Harvard (separate program and data buses) and RISC-like, executing one instruction per oscillator cycle, which makes timing predictable for fixed-period control loops. Within the broader taxonomy: PIC12C672 -> PIC12C family -> PIC® mid-range 8-bit -> 8-bit MCU -> microcontroller -> embedded semiconductor. Key features include 4 MHz maximum operating frequency (the "-04" speed grade), 3.5 KB OTP program memory, 128 bytes of RAM, 6 bidirectional I/O pins multiplexed with analog and timer functions, an 8-bit analog-to-digital converter (ADC), one 8-bit timer/counter (TMR0), a watchdog timer with on-chip RC oscillator, power-on reset, and an internal 4 MHz RC oscillator option. The device operates from 3.0 V to 5.5 V and supports in-circuit serial programming (ICSP) through the standard two-pin ICSPCLK/ICSPDAT interface. Architecturally, the PIC12C672 uses a 14-bit instruction word, an 8-bit data path, and a two-stage pipeline, with each instruction completing in one instruction cycle (4 oscillator clocks at the 4 MHz rate). The OTP program memory allows one-time factory or in-circuit programming - once written, it cannot be erased, which is the primary distinction from flash-based PIC12F parts that share the same pinout. Typical applications include appliance control, sensor signal conditioning, LED driving, low-end remote controls, automotive sub-system modules, battery chargers, and any space-constrained embedded product that needs deterministic 8-bit processing with on-chip ADC. When designing with this part, account for its OTP memory by validating firmware on a windowed (JW) version before committing to production code. Plan I/O assignments carefully - GP3 is input-only and shares a pin with MCLR/VPP, which constrains both reset topology and I/O count. This page synthesizes distributor pricing across 13 channels, pin-compatible 8-pin PIC alternatives, and practical design notes not found in the standalone datasheet.

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PIC12C672-04E/MF - 8-Bit 4MHz OTP MCU with ADC, 3.5KB | Microchip
PIC12C672-04E/MF

PIC12C672-04E/MF - 8-Bit 4MHz OTP MCU with ADC, 3.5KB | Microchip

The Microchip Technology PIC12C672-04E/MF is an 8-bit PICmicro RISC microcontroller with 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and an integrated 4-channel 8-bit ADC, housed in an 8-pin DFN-S exposed-pad (6x5 mm) surface-mount package. The device runs at 4 MHz from a wide 2.5V-5.5V supply and features 5 general-purpose I/O lines, an internal oscillator, and an on-chip EEPROM data memory variant (PIC12CE672) for non-volatile parameter storage. The "04E" suffix designates 4 MHz operation over the enhanced -40C to +125C industrial temperature range, while "/MF" denotes the 8-pin DFN-S EP package supplied in tube. What is an 8-bit OTP microcontroller? An 8-bit OTP (One-Time-Programmable) MCU is a small, low-cost embedded controller that executes instructions on 8-bit data words and can be programmed exactly once. The PIC12C family sits in the hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC12C baseline series, and is widely used where cost, small footprint, and deterministic interrupt response outweigh the need for reprogrammability or large memory. Key features include Harvard RISC architecture with 33 single-word instructions, 4-cycle instruction time at 4 MHz (1 us per instruction), a 4-channel 8-bit successive-approximation ADC, an internal 4 MHz RC oscillator, and an on-chip Power-on Reset / Brown-out Reset / Watchdog Timer. The device supports in-circuit serial programming (ICSP) through GPIO pins, allowing field programming even after board assembly. Typical applications include ultra-compact consumer appliances, battery-powered sensor nodes, automotive body controllers, simple closed-loop regulators, and low-cost replacement of discrete logic. The 8-pin DFN-S EP footprint is one of the smallest PIC packages available, making the part attractive for space-constrained designs where 4 MHz and 3.5KB of code are sufficient. When designing with this part, note that the "E" (extended) temperature grade and DFN-S EP package make it suitable for industrial and automotive under-hood environments, but the 8-pin footprint limits I/O to 5 lines plus GP3-only input. Designers should carefully plan ADC channel sharing, oscillator accuracy, and the OTP programming flow before committing the BOM.

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PIC12C672-04E/P - 8-bit MCU, 4MHz, 3.5KB OTP, 8-PDIP | Microchip
PIC12C672-04E/P

PIC12C672-04E/P - 8-bit MCU, 4MHz, 3.5KB OTP, 8-PDIP | Microchip

The Microchip Technology PIC12C672-04E/P is an 8-bit CMOS microcontroller from the PIC12C family, delivering 4 MHz operation with 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of RAM. Housed in a through-hole 8-pin PDIP package, it exposes 6 digital I/O lines and integrates a 4-channel 8-bit ADC, internal RC oscillator, watchdog timer, and power-on reset. The "-04E" suffix denotes 4 MHz maximum clock and the "E" extended temperature grade of -40C to +125C, while "/P" identifies the PDIP package. A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC processor optimized for embedded control. The PIC12C family is Microchip's baseline 8-pin OTP MCU line, sitting within the broader PICmicro hierarchy: PIC12C -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. These devices target cost-sensitive applications where small footprint, low power, and integrated analog peripherals eliminate the need for external components. Key features of the PIC12C672 include a 4-channel 8-bit on-chip ADC with selectable reference, internal 4 MHz oscillator (no external crystal required), 25 mA source/sink per I/O, 2.5 V to 5.5 V wide operating voltage, and a hardware watchdog timer for reliable standalone operation. Power consumption is minimized through a SLEEP mode with wake-on-change capability, drawing microamp-level standby current. The PIC12C672 uses a 14-bit instruction word RISC core executing most instructions in a single 1 microsecond cycle (at 4 MHz). Its OTP program memory is factory or developer one-time programmable via ICSP (In-Circuit Serial Programming), making the device ideal for low-volume production, prototyping, and cost-driven consumer products where field reprogramming is not required. Typical applications include appliance controls, sensor signal conditioning, battery chargers, LED drivers, simple motor control, security sensors, and standalone analog front ends. Designers select this part when they need a tiny 8-pin footprint with built-in ADC and minimal BOM cost. When designing with the PIC12C672, ensure the ICSP clock and data pins (RB6/RB7) are accessible for programming. For ADC accuracy, place a 10 uF + 0.1 uF decoupling pair near VDD and use the internal voltage reference only after calibrating against VDD. This page synthesizes distributor stock, drop-in OTP and flash alternatives in the same 8-PDIP footprint, and design notes beyond what the manufacturer datasheet alone provides.

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PIC12C672-04I/MF - 8-Bit 4MHz MCU, 3.5KB OTP, 8-DFN-S | Microchip
PIC12C672-04I/MF

PIC12C672-04I/MF - 8-Bit 4MHz MCU, 3.5KB OTP, 8-DFN-S | Microchip

The Microchip Technology PIC12C672-04I/MF is a PIC PIC® 12C family 8-bit RISC microcontroller (MCU) operating at up to 4MHz with 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and an integrated 4-channel 8-bit Analog-to-Digital (A/D) converter, housed in an 8-lead VDFN Exposed Pad surface-mount package (8-DFN-S, 6 x 5 mm). It is the industrial temperature grade variant of the PIC12C672, supporting an operating range of -40 °C to +85 °C with an internal oscillator. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and configurable peripherals designed for embedded control. The PIC12C family uses Microchip's 8-bit Harvard RISC architecture with a small instruction set optimized for deterministic, low-overhead execution in cost-sensitive applications. Within the broader taxonomy, the PIC12C672 sits at the entry level of the PICmicro hierarchy — a baseline OTP mid-range device positioned between simple 6-pin PIC10F controllers and the larger 14-/18-/28-pin PIC16F and PIC18F families. Key features include 3.5KB OTP program memory (2K x 14 words), 128 bytes of SRAM, 5 general-purpose I/O pins, an internal oscillator, and 4 channels of 8-bit A/D conversion. The 8-DFN-S (6 x 5 mm) package with an exposed thermal pad enables compact PCB layouts in space-constrained designs while providing adequate thermal dissipation for the industrial -40 °C to +85 °C operating range. Architecturally, the PIC12C672 uses a 14-bit instruction word, single-cycle ALU operations, and a hardware stack, allowing most instructions to execute in one oscillator cycle. The internal oscillator eliminates the need for external clocking components, and the 8-bit A/D converter with 4 input channels supports direct sensor interfacing for battery monitoring, signal conditioning, and simple closed-loop control. Typical applications include consumer electronics remote controls, small appliance controllers, sensor interface modules, battery-powered low-cost embedded products, and industrial auxiliary control where a 5-I/O, 8-bit, OTP-based controller delivers the right balance of integration and unit cost. When designing with this device, allocate the 8-bit A/D converter's reference voltage through a stable rail — noisy VDD will directly degrade conversion accuracy. Note that OTP memory cannot be reprogrammed; for in-field firmware updates, consider a flash-based PIC12F or PIC16F variant in the same pinout family. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving buyers and design engineers a single, citable reference for the PIC12C672-04I/MF.

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PIC12C672-04I/SM - 8-Bit 4MHz OTP MCU, 3.5KB | Microchip
PIC12C672-04I/SM

PIC12C672-04I/SM - 8-Bit 4MHz OTP MCU, 3.5KB | Microchip

The Microchip Technology PIC12C672-04I/SM is an 8-bit, 4 MHz, one-time-programmable (OTP) CMOS RISC microcontroller in an 8-pin SOIJ package with integrated 8-bit A/D converter. It packs 3.5 KB (2K x 14) of program memory, 128 bytes of RAM, 6 I/O pins, and a brown-out / power-on reset plus watchdog timer. The "-04" suffix denotes the 4 MHz instruction-clock speed grade, "I" denotes the industrial temperature range (-40C to +85C), and "/SM" denotes the 8-lead SOIJ (208-mil) surface-mount package. What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a single-chip computer with an 8-bit data path, on-board non-volatile program memory (here, OTP EPROM), RAM, I/O peripherals, and a CPU. OTP means the program memory is one-time-programmable: the cell is blown once and cannot be erased, making the part ideal for high-volume, low-cost embedded products where firmware is finalized. Within Microchip's taxonomy, the PIC12C672 belongs to the PIC12C family (8-pin baseline/midrange), sits below the PIC16C in pin count, and uses the 14-bit instruction-word PIC16/17 RISC architecture. Key features of this part include a 4 MHz maximum oscillator input (200 ns instruction cycle), 4 MHz internal RC or external crystal/RC/HS oscillator options, a 4-channel 8-bit A/D converter, and an operating voltage range of 2.5 V to 5.5 V (-04 speed grade at 5 V typical). The device consumes under 2 mA active at 5 V/4 MHz and less than 1 µA in sleep. It is built on a fully-static CMOS process that holds registers and RAM across clock stop. Architecturally, the PIC12C672 uses a Harvard design with separate program and data buses, a 14-bit program word, and a single-accumulator ALU with W-register plus 32-byte file register map plus banked GPRs (128 bytes total). Peripherals include Timer0 with programmable prescaler, watchdog timer with dedicated RC oscillator, POR/BOR reset, and selectable code-protect bit. Typical applications for this part include low-cost appliance controls, battery chargers, sensor signal-conditioning front ends, automotive interior accessories, security keypads, and small white-goods motor controllers where the 6 I/O pins are sufficient and code stability is essential. The OTP memory and small footprint make it well suited to production volumes where mask-ROM is not economical. Design tip: Provide a clean VDD decoupling network (0.1 µF ceramic + 10 µF bulk) directly at the SOIJ pins and keep the MCLR/VPP trace short. When the device is configured for an external crystal or resonator, place the load capacitors within 5 mm of the OSC1/OSC2 pins to minimize EMI and start-up issues. This page synthesizes distributor pricing (as of 2026-09-15), verified drop-in PIC12C672 alternatives, and practical engineering guidance not found in the bare datasheet.

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PIC12C672-10/P - 8-Bit 10MHz 3.5KB OTP MCU 8-PDIP | Microchip
PIC12C672-10/P

PIC12C672-10/P - 8-Bit 10MHz 3.5KB OTP MCU 8-PDIP | Microchip

The Microchip Technology PIC12C672-10/P is an 8-bit CMOS OTP-based microcontroller in the PIC12C family, delivering 10 MIPS at a 10 MHz oscillator input (400 ns instruction cycle) in an 8-pin PDIP through-hole package. It integrates 3.5 KB (2K x 14) of one-time-programmable program memory, 128 bytes of RAM, and a 4-channel 8-bit analog-to-digital converter (ADC) on-chip, all within a compact 8-pin footprint. What is an 8-bit OTP microcontroller? An 8-bit OTP microcontroller is a single-chip computer built around an 8-bit data path with non-volatile program memory that can be written once and is thereafter read-only, typically used in cost-sensitive, low-to-medium volume embedded products. The PIC12C672 belongs to the PICmicro mid-range family, sitting in the taxonomy microcontroller -> embedded controller -> 8-bit MCU -> CMOS OTP MCU -> PIC12C series, and forms part of Microchip's PIC architecture lineage of RISC microcontrollers. Key features include 35 single-word instructions, only 12 of which are single-cycle, plus an 8-bit timer/counter (TMR0) with an 8-bit programmable prescaler, a watchdog timer with its own on-chip RC oscillator for reliable operation, power-on reset, brown-out detection, power-saving sleep mode, and an in-circuit serial programming interface. The 6 general-purpose I/O pins are multiplexed with the four ADC channels, providing flexibility in mixed analog/digital designs. The architecture uses a Harvard design with separate program and data buses, allowing instruction fetch and operand read to occur in the same cycle. The CMOS process combined with nanoWatt technology keeps active current around 2 mA at 5V/4 MHz and quiescent current below 1 uA in sleep, making the PIC12C672-10/P appropriate for battery-powered or always-on sensor nodes. Typical applications include consumer appliance controllers, sensor signal conditioning, simple motor drives (small DC fans, solenoids), battery chargers, and low-end automotive body electronics. The wide 2.5V-5.5V operating range supports both 3V lithium and 5V regulated supplies. When designing with this part, account for its OTP memory - firmware revisions require a new device - and ensure decoupling is placed within 1 cm of VDD with a bulk capacitor at the board supply input. This page synthesizes verified distributor pricing, parametric drop-in alternatives, and applied design notes not consolidated in the manufacturer datasheet alone.

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PIC12C672-10/SM - 8-bit CMOS MCU, 3.5KB OTP, 10MHz, SOIJ-8 | Microchip
PIC12C672-10/SM

PIC12C672-10/SM - 8-bit CMOS MCU, 3.5KB OTP, 10MHz, SOIJ-8 | Microchip

The Microchip Technology PIC12C672-10/SM is an 8-bit, fully-static CMOS microcontroller based on Microchip's PIC16/17 RISC architecture, packaged in an 8-pin SOIJ (SM) tube package. It integrates a 10-bit A/D converter, 3.5KB of one-time-programmable (OTP) program memory, 128 bytes of RAM, and 6 digital I/O pins, all on a single chip. The device executes instructions in a 400 ns cycle at 10 MHz and operates from a 2.5V to 5.5V supply, making it suitable for both 3.3V and 5V systems. What is an 8-bit OTP microcontroller? It is a small, low-cost CMOS RISC microcontroller that uses one-time-programmable non-volatile memory to store firmware, an integrated ADC for analog signal acquisition, and a Harvard architecture (separate program and data buses) for deterministic instruction timing. In the broader taxonomy, OTP microcontrollers sit between mask-ROM MCUs (lowest unit cost, factory programmed) and Flash MCUs (re-programmable, higher unit cost), and they belong to the larger family of embedded microcontrollers (MCU -> microprocessor -> semiconductor). They are widely used in cost-sensitive, low-pin-count, high-volume products where field firmware updates are unnecessary. Key features of the PIC12C672-10/SM include six I/O pins, four 8-bit A/D channels (10-bit resolution, multiplexed onto I/O pins), power-on-reset (POR), a watchdog timer (WDT) with on-chip RC oscillator, an internal 4 MHz RC oscillator, selectable oscillator modes (RC, XT, LP, HS, INTOSC), and code protection via fuse bits. Power-down (SLEEP) mode draws only microamp-level current, enabling battery-friendly designs. The 35 single-word instruction set is fully upward compatible with the PIC16 family, simplifying code reuse across Microchip devices. Technically, the PIC12C672-10/SM uses a 14-bit instruction word with a 2-stage pipeline and direct/indirect/relative addressing modes. Its interrupt structure handles four sources (external GP2/INT, TMR0 overflow, GPIO change, A/D conversion complete). The integrated ADC provides 10-bit resolution with a 4-channel multiplexer (AN0-AN3), adequate for sensor conditioning such as thermistor or potentiometer reads. The SOIJ (SM) surface-mount package is more compact than a standard SOIC, freeing board area in space-constrained assemblies. Typical applications include battery chargers, appliance controllers, sensor interface front-ends, small signal-conditioning front-ends, smart-card readers, and consumer products where 6 I/O pins suffice. Designers value the PIC12C672-10/SM when 10-bit ADC and 35-instruction simplicity are enough, and where the cost advantage of OTP over Flash outweighs the lack of in-system reprogrammability. When designing with this device, note that OTP cannot be re-programmed in-circuit. Designers must pre-program the device using a device programmer such as the MPLAB PM3 before PCB assembly. Leave the MCLR/VPP pin accessible for factory programming, and provide a 10 kohm pull-up to VDD. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet.

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