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PIC10LF320T-I/MC - 8-bit MCU, 448B Flash, 16MHz, 8-DFN | Microchip
PIC10LF320T-I/MC

PIC10LF320T-I/MC - 8-bit MCU, 448B Flash, 16MHz, 8-DFN | Microchip

The Microchip Technology PIC10LF320T-I/MC is an 8-bit PIC microcontroller from the PIC10F family, featuring 448 bytes (256 x 14 words) of Flash program memory, 32 bytes of RAM, and a 16 MHz internal oscillator. Housed in a compact 8-pin DFN (2x3 mm) package, it operates from a 1.8V to 3.6V supply and offers 4 I/O pins, an 8-bit ADC, and integrated peripherals including PWM, Configurable Logic Cells (CLC), Numerically Controlled Oscillator (NCO), Complementary Waveform Generator (CWG), and a temperature indicator. An 8-bit PIC microcontroller is a compact, low-power RISC-based processor widely used in embedded systems for simple control tasks. The PIC10F family belongs to Microchip's 8-bit MCU portfolio, which sits under the broader microcontroller hierarchy: microcontroller -> embedded processor -> semiconductor IC. These devices are favored for their deterministic instruction execution, ultra-low sleep currents, and minimal external component count, making them ideal for cost- and space-constrained applications. Key features of the PIC10LF320T-I/MC include 4 I/O pins, an 8-bit ADC with multiple channel options, and support for in-circuit serial programming (ICSP). The integrated CLC, NCO, and CWG peripherals enable the generation of custom waveforms and logic functions without external components, reducing BOM cost and PCB area. The temperature indicator provides an on-chip analog temperature sensor for system monitoring. The device leverages Microchip's enhanced mid-range 8-bit core, which delivers up to 16 MHz operation (8 MIPS) from a single-cycle instruction pipeline. Its nanoWatt XLP technology provides sleep currents in the nanoampere range, making it well-suited for battery-powered applications. The 8-bit ADC operates from the device supply and supports multiple acquisition modes for sensor interfacing. Typical applications include consumer electronics remote controls, IoT sensor nodes, battery management accessories, LED lighting controllers, and small appliance controls. Its tiny 8-DFN footprint also fits wearables and space-constrained PCB modules. For cost-sensitive designs requiring minimal MCU capability, the PIC10LF320T-I/MC provides a balance of integration and low power consumption. When designing with this part, note that only 4 I/O pins are available; complex peripherals (UART, I2C, SPI) are not natively present but can be implemented in firmware using the CLC/NCO peripherals. Decoupling capacitors (typically 100 nF) should be placed close to VDD, and unused I/O pins should be configured as outputs low to minimize power consumption. This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes to help engineers evaluate the PIC10LF320T-I/MC for space-constrained 8-bit embedded designs not found in a single manufacturer document.

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PIC10LF322-E/P - 8-Bit MCU, 896B Flash, 64B RAM, 4 I/O | Microchip
PIC10LF322-E/P

PIC10LF322-E/P - 8-Bit MCU, 896B Flash, 64B RAM, 4 I/O | Microchip

The Microchip Technology PIC10LF322-E/P is an 8-bit PIC microcontroller from the PIC10F family, featuring 896 bytes of flash program memory (512 x 14 words), 64 bytes of RAM, and 4 I/O pins in an 8-pin PDIP through-hole package. The device operates from 1.8V to 3.6V with a maximum CPU clock of 16 MHz (per the DigiKey listing), delivering low-power 8-bit performance for compact embedded designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and peripherals such as ADCs, timers, and communication interfaces on one die. Within the broader taxonomy, the PIC10LF322 belongs to the 8-bit MCU class, which sits under microcontrollers, embedded processors, and finally semiconductors. The PIC10F32X line specifically targets ultra-compact, low-pin-count applications where PCB real estate is constrained but on-chip intelligence is required. Key features include an integrated 8-bit ADC, PWM module, Configurable Logic Cell (CLC), Numerically Controlled Oscillator (NCO), Complementary Waveform Generator (CWG), and a temperature indicator. According to Microchip documentation, the part also offers a low-power sleep mode ideal for battery-powered designs. The 4 I/O pins make it suitable as a logic-replacement chip with programmable behavior, pin-function remapping, and dedicated peripheral outputs. The architecture is based on Microchip's enhanced mid-range 8-bit core, providing single-cycle instruction execution at 16 MHz (4 MHz instruction cycle). On-chip peripherals such as the NCO and CWG allow precise frequency generation and complementary PWM outputs for power control, while the CLC enables glue-logic replacement without external gates. Typical applications include IoT sensor nodes, wearable electronics, LED lighting controllers, simple motor control, and consumer-electronic logic replacement. The wide 1.8V to 3.6V supply range makes it compatible with single-cell lithium or two-AA battery chemistries without level shifting. When designing with this part, observe the absolute maximum VDD of 3.6V and ensure decoupling (100 nF minimum, 10 uF bulk) is placed within 5 mm of the supply pin. The 4 I/O pins can be remapped to peripherals but cannot be increased; designers requiring more I/O should consider PIC12F or PIC16F families in the same PDIP-8 footprint. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC10LF322-I/P - 8-Bit MCU 896B Flash 16MHz 8-PDIP | Microchip
PIC10LF322-I/P

PIC10LF322-I/P - 8-Bit MCU 896B Flash 16MHz 8-PDIP | Microchip

The Microchip Technology PIC10LF322-I/P is a low-power, 8-bit flash-based microcontroller from the PIC10F family, featuring 896 bytes of flash program memory (512 x 14 words), 64 bytes of RAM, and a 16 MHz internal oscillator, housed in an 8-pin PDIP through-hole package. It integrates a 10-bit ADC with up to 4 channels, a configurable logic cell (CLC), complementary waveform generator (CWG), and multiple timer peripherals, all within the smallest PIC10 footprint. The low-voltage (LF) silicon operates across a 1.8 V to 3.6 V supply range with nanoWatt XLP technology. An 8-bit microcontroller (MCU) is a small, single-chip computer built around an 8-bit data path that integrates a CPU, non-volatile program memory, volatile data RAM, and peripheral blocks such as timers, ADC, and communication interfaces on one silicon die. The PIC10 family occupies the entry-level tier of the Microchip PIC architecture hierarchy, sitting below PIC12, PIC16, PIC18, PIC24, and dsPIC families in both pin count and feature density. These MCUs are optimized for glue logic, simple sensing, and standby-control roles where board space and BOM cost dominate design decisions. The PIC10LF322 differs from earlier PIC10F2xx devices by more than tripling program memory to 896 B, adding hardware CWG and CLC peripherals, integrating a 16 MHz high-speed internal oscillator, and supporting in-circuit serial programming (ICSP) on the same pins used for general I/O. The low-voltage 'L' silicon and F (flash) memory variant combine to give engineers field-upgradeable firmware and ultra-low sleep current (typically under 25 nA in deep sleep), making the part suitable for battery-powered or energy-harvesting designs. Typical applications include battery management for coin-cell devices, LED blink/breathing controllers, simple sensor signal conditioning with ADC, fan or pump speed control using CWG, household appliance user-interface glue, and wearable accessories. The 8-pin PDIP package is widely preferred for breadboarding, hobby projects, and legacy through-hole production where field serviceability is valued over SMT density. When designing with this part, observe the maximum clock of 16 MHz (or 20 MHz per alternate data) and ensure VDD stays within the 1.8 V-3.6 V LF window. The ICSP/ICSPDAT pins (typically GP0/GP1) must be accessible on the production board to allow firmware updates and device programming without desoldering the MCU. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found on a single manufacturer datasheet.

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PIC10LF322T-I/MC - 8-Bit 16MHz MCU 896B Flash | Microchip
PIC10LF322T-I/MC

PIC10LF322T-I/MC - 8-Bit 16MHz MCU 896B Flash | Microchip

The Microchip Technology PIC10LF322T-I/MC is an ultra-low-power, 8-bit flash microcontroller from the PIC® 10F family, running at 16 MHz (maximum 20 MHz) and offering 896B (512 x 14 words) of program Flash memory with 64 bytes of SRAM, housed in an 8-pin DFN (2x3 mm) package. It operates from 1.8V to 3.6V and provides 4 user I/O pins plus 1 input-only pin, with on-chip peripherals including a 10-bit ADC, two 8-bit timers, one 16-bit timer, an enhanced PWM module, and an MSSP supporting SPI and I2C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash or ROM), data memory (RAM), and configurable I/O peripherals on one die. Microcontrollers sit at the lowest tier of embedded computing hierarchy: MCU -> embedded processor -> digital IC -> semiconductor. The PIC10F family specifically targets ultra-compact, cost- and power-sensitive applications where package size and quiescent current dominate the design trade-off rather than processing throughput. Key features of this part include the Mid-Range 8-bit PIC core, nanoWatt XLP technology for sub-microamp sleep currents, an integrated 16 MHz internal oscillator (no external crystal required), and an on-chip 8-bit ADC capable of 8-channel muxed operation. The device also includes a comparator, configurable logic cell (CLC), and PWM module with up to 4 outputs, supporting simple mixed-signal functions without external analog components. Architecturally, the PIC10LF322 uses a Harvard RISC core with separate code and data buses, which improves instruction throughput at low clock rates. The 14-bit instruction word gives 49 single-word instructions including hardware multiply, while the 8-bit data path keeps register pressure low in bit-banging and small-state-machine applications typical of this package class. Typical applications include wearables and fitness bands, IoT sensor nodes, battery-powered remote controls, LED drivers, simple fan controllers, and low-end consumer electronics. The 8-pin footprint is well suited to designs where PCB real estate is measured in square millimeters. When designing with this part, note that the DFN-8 (MC) package has an exposed thermal pad that must be soldered to the PCB ground plane for thermal and electrical performance; bypassing the EP connection can shift ADC readings by several LSBs. This page synthesizes distributor pricing, drop-in alternatives from the PIC10/10F families, and practical layout guidance not found in the standalone manufacturer datasheet.

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PIC10LF322T-I/OT - 8-Bit MCU, 16MHz, 896B Flash | SOT-23-6 | Microchip
PIC10LF322T-I/OT

PIC10LF322T-I/OT - 8-Bit MCU, 16MHz, 896B Flash | SOT-23-6 | Microchip

The Microchip Technology PIC10LF322T-I/OT is an 8-bit PIC10 family microcontroller featuring 896 bytes of flash program memory and 64 bytes of RAM, housed in a 6-pin SOT-23 (OT) surface-mount package. It operates at up to 16MHz from a 1.8V to 3.6V supply and integrates a 3-channel 8-bit ADC, two PWM channels, three timers, watchdog timer, power-on reset, and brown-out reset on-chip. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (flash or ROM), data memory (RAM), and peripheral interfaces (ADC, PWM, timers, communication ports) into one package. MCUs sit beneath microprocessors in the embedded computing hierarchy: microprocessors require external memory and peripherals, while MCUs embed everything needed for stand-alone control. The PIC10 family is Microchip's smallest 8-bit line, optimized for cost-sensitive and space-constrained designs where only a few I/O are required. Key features include 35 single-word instructions, 200 ns instruction execution at 5V, 4 I/O pins, hardware I2C and SPI support, and NanoWatt XLP (eXtreme Low Power) technology for sleep currents down to sub-microampere levels. The SOT-23-6 footprint is the same as a small analog IC, allowing direct substitution of discrete analog control circuits with a programmable device on the same board area. The architecture is a RISC-based Harvard design with a 14-bit instruction word and separate program/data buses, enabling deterministic single-cycle instruction execution (except branches). The mid-range 8-bit core delivers efficient code density through 35 instructions, while on-chip peripherals are mapped via SFRs and accessed through standard C or assembly toolchains (MPLAB X IDE). Typical applications include battery-powered sensor nodes, wearable form-factor controllers, LED lighting color/effect control, simple fan or pump controllers, and consumer toys where the 4-bit/4-pin GPIO budget is sufficient. The LF (low-voltage) variant extends operation down to 1.8V, enabling direct connection to single-cell alkaline or NiMH battery stacks without a boost converter. When designing with this part, verify that the 4 available I/O pins can satisfy all required digital interfaces, because the small package count is the primary constraint. Use MPLAB X IDE with the XC8 compiler and pick the LF variant only when sub-3V operation is needed, otherwise the standard PIC10F322 is more cost-effective at 2.5V-5.5V operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for engineers evaluating the PIC10LF322T-I/OT for space-constrained 8-bit designs.

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PIC12C508-04/P - 8-Bit 4MHz OTP MCU 768B | Microchip
PIC12C508-04/P

PIC12C508-04/P - 8-Bit 4MHz OTP MCU 768B | Microchip

The Microchip Technology PIC12C508-04/P is an 8-bit RISC microcontroller in a through-hole 8-pin PDIP package, featuring 4 MHz maximum operating frequency, 768 bytes (512 x 12) of one-time programmable (OTP) program memory, and 25 bytes of RAM. Built on a fully static CMOS process, it delivers 200 ns instruction execution and operates from 2.5 V to 5.5 V across the industrial -40 C to +85 C range. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and programmable I/O peripherals. The PIC12C508 belongs to the baseline PIC12 family, the simplest tier within Microchip's 8-bit PIC architecture hierarchy: PIC10/12/16/18 baseline and mid-range families -> 8-bit PIC microcontrollers -> microcontroller ICs -> embedded processors -> semiconductors. Baseline PICs use a 12-bit instruction word and a 33-instruction RISC core, which makes them exceptionally easy to program yet powerful enough for simple control loops. Key features include 6 bidirectional I/O pins (GP0-GP5), a watchdog timer with on-chip RC oscillator, power-on reset, power-saving SLEEP mode, and code protection. The 12C508 lacks an analog comparator and A/D converter, distinguishing it from the PIC12C508A revision; it is intended for pure digital glue-logic replacement and simple state-machine duties. The OTP program memory is one-time programmable, which makes this part attractive for low-cost volume production where firmware is finalized. The device uses a Harvard RISC architecture with separate program and data buses, allowing instruction fetch and operand access in the same cycle. Each instruction is a fixed 12-bit word, and 33 single-word single-cycle instructions cover arithmetic, logical, branch, and bit-manipulation operations. The four oscillator modes (LP, XT, HS, RC) let designers trade off cost, frequency, and power across a wide range of applications. Typical applications include battery chargers, timer/counter modules, security systems, low-cost consumer appliances, and any cost-sensitive board that previously used discrete 555/4017 logic. Designers also deploy it in industrial controllers and remote sensor interfaces that benefit from its tiny 8-pin footprint. When designing with this device, allocate one I/O pin as a firmware-programming entry on production boards to enable in-system firmware update via Microchip's ICSP protocol. Remember that OTP memory cannot be erased, so a single programming error on a production batch consumes the part. This page synthesizes distributor pricing, drop-in PIC10/PIC12 alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC12C508-04I/P - 8-bit OTP MCU 4MHz 768B | Microchip PDIP-8
PIC12C508-04I/P

PIC12C508-04I/P - 8-bit OTP MCU 4MHz 768B | Microchip PDIP-8

The Microchip Technology PIC12C508-04I/P is an 8-bit, fully static, EPROM/OTP-based CMOS microcontroller in an 8-pin PDIP package, operating at up to 4 MHz. It integrates 768 bytes (512 x 12) of OTP program memory, 25 bytes of RAM, and 6 I/O pins, with an industrial temperature range of -40C to +85C. A microcontroller (MCU) is a single-chip computer that contains a CPU, non-volatile program memory, RAM, and peripheral I/O. The PIC12C508 belongs to the 8-bit microcontroller category, which is a sub-class of embedded processors within the broader semiconductor taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. RISC-based 8-bit MCUs like the PIC12 family remain widely deployed in cost- and pin-constrained applications. Key features include 33 single-word/single-cycle RISC instructions, a 4 MHz internal oscillator option, an 8-bit timer/counter, a watchdog timer, power-on reset, and in-circuit serial programming (ICSP) capability. The device operates from 2.5V to 5.5V across the industrial temperature range and offers low-power consumption suitable for battery-operated designs. The 4 MHz speed grade supports 1 us instruction execution. Architecturally, the PIC12C508 uses a Harvard-style RISC core with separate code and data buses, providing deterministic single-cycle instruction execution. The OTP program memory (one-time programmable) means code is permanently written at production time, which is typical for high-volume cost-sensitive products. Typical applications include consumer appliances, sensor signal conditioning, simple motor control, automotive subsystems, LED driver controllers, and battery chargers. The 6 I/O pins, while limited, are sufficient for applications with minimal external interfaces. When designing with this device, note that OTP memory cannot be reprogrammed, so code must be fully verified before programming. Designers should also use ICSP for development and production programming to avoid socketed programming complexity. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with the information needed to specify, source, and integrate the PIC12C508-04I/P in volume production.

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PIC12C508-04I/SM - 4MHz 8-bit OTP MCU 8-SOIJ | Microchip
PIC12C508-04I/SM

PIC12C508-04I/SM - 4MHz 8-bit OTP MCU 8-SOIJ | Microchip

The Microchip PIC12C508-04I/SM is an 8-bit, fully static, EPROM/OTP-based CMOS microcontroller from the PIC12C5xx family, operating at 4 MHz with 768 bytes (512 x 12) of OTP program memory in an 8-SOIJ package. An 8-bit microcontroller (MCU) is a small, low-cost computer-on-a-chip that integrates a CPU, memory, and I/O peripherals onto a single silicon die. Within the semiconductor hierarchy, an MCU sits under the broader category of microcontrollers, which themselves fall under Integrated Circuits > Logic ICs. The PIC12C5xx family specifically belongs to Microchip's PIC® (Peripheral Interface Controller) architecture, employing a RISC design with only 33 single-word/single-cycle instructions. This instruction simplicity is a defining feature that reduces development time and allows the device to deliver roughly 2:1 code compression versus competing 8-bit MCUs in its class. The "C" in PIC12C508 denotes the EPROM/OTP (one-time programmable) program memory variant, distinguishing it from later flash-based "F" revisions. Key features of the PIC12C508-04I/SM include 25 bytes of RAM, 6 general-purpose I/O pins, a 4 MHz internal/external oscillator option, and an industrial temperature range of -40°C to +85°C. The "-04" suffix denotes the 4 MHz oscillator speed grade, while "I" indicates industrial temperature grading and "SM" is the 8-SOIJ (Small Outline IC, J-leaded) surface-mount package. The device is fully static, allowing the clock to be stopped without losing register state, and supports a wide operating voltage range of 2.5V to 5.5V, making it tolerant of both 3.3V and 5V logic rails. Technically, the PIC12C508-04I/SM uses a 12-bit instruction word and a 2-stage pipeline that fetches the next instruction while executing the current one, achieving effective throughput of approximately 4 MIPS at 4 MHz. Its Harvard architecture separates program and data memory, eliminating bus contention and improving deterministic interrupt response. The device also features a watchdog timer, power-on reset, brown-out detect (on selected revisions), and a precision 4 MHz RC oscillator option that allows operation without external crystals, saving both board space and BOM cost. Typical applications include low-cost consumer electronics, automotive body controllers, simple sensor interfaces, hobbyist and educational projects, and 8-pin appliances such as LED controllers and battery chargers. The 8-pin footprint is particularly valuable where PCB real estate is severely constrained. When designing with this device, note that OTP memory cannot be reprogrammed, so firmware must be verified before committing to production units. Decoupling capacitors (100 nF) should be placed within a few millimeters of the VDD pin, and unused I/O pins should be configured as outputs to minimize current consumption. This page synthesizes distributor pricing, drop-in-compatible alternatives, and practical design notes from the Microchip datasheet that are not aggregated on any single distributor product page.

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PIC12C508/JW - 8-Bit EPROM MCU 4MHz 768B | Microchip
PIC12C508/JW

PIC12C508/JW - 8-Bit EPROM MCU 4MHz 768B | Microchip

The Microchip Technology PIC12C508/JW is an 8-bit CMOS microcontroller from the PIC12C5XX family, featuring 768 bytes of UV-erasable EPROM program memory (organized as 512 x 12) and 25 bytes of RAM. Housed in an 8-pin CDIP (Ceramic Dual In-line Package) with a quartz window for UV erasure, it operates at up to 4 MHz with a wide 2.5V to 5.5V supply range and delivers 1 microsecond instruction execution. An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating an 8-bit CPU, program memory, data RAM, and peripheral interfaces on a single die. The PIC12C5XX family uses a RISC architecture with only 33 single-word/single-cycle instructions, making the device classifiable within the broader hierarchy: microcontroller -> embedded controller -> integrated circuit -> semiconductor. The JW windowed package variant specifically targets prototyping, development, and field-reprogrammable applications where firmware iteration is required, unlike the OTP (one-time-programmable) plastic PDIP versions intended for production. Key features include 6 I/O pins with individual direction control, Power-On Reset (POR), Watchdog Timer (WDT) with on-chip RC oscillator, code protection, and power-saving SLEEP mode. The PIC12C508/JW's EPROM-based memory enables hundreds of erase/write cycles, distinguishing it from flash-based successors in the PIC12F and PIC16F families. The 4 MHz internal/external oscillator capability and DC to 4 MHz operating speed suit slow-control and timing-deterministic applications. Architecturally, the PIC12C508/JW employs a Harvard architecture with separate program and data buses, a 12-bit instruction word, and 7 special function registers controlling the 25 general purpose registers. This minimal core delivers predictable 1-microsecond per-instruction execution at 4 MHz, ideal for interrupt-driven and state-machine designs where determinism outweighs raw throughput. Typical applications include automotive body controllers, appliance control, low-power remote sensors, security systems, and consumer electronics where a small pin-count, deterministic 8-bit core reduces BOM cost and PCB area. The JW windowed ceramic DIP is favored for engineering builds and educational platforms. When designing with this device, note that the 8-CDIP windowed package is significantly larger than modern SOT or DFN microcontrollers. Confirm your firmware development tools (e.g., MPLAB X IDE) support legacy EPROM parts, and budget for a UV eraser if iterative code development is planned. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application guidance, and engineering design notes not consolidated on the manufacturer datasheet front-matter - information specifically curated for component selection and sourcing decisions.

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PIC12C508A-04/P - 8-bit 4MHz OTP MCU 768B | Microchip | DIP-8
PIC12C508A-04/P

PIC12C508A-04/P - 8-bit 4MHz OTP MCU 768B | Microchip | DIP-8

The Microchip Technology PIC12C508A-04/P is an 8-bit CMOS RISC microcontroller in a 8-pin PDIP package, featuring 4MHz maximum oscillator frequency, 768 bytes (512 x 12) of One-Time-Programmable (OTP) program memory, and 25 bytes of RAM, engineered for cost-sensitive embedded applications. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals. The PIC12C508A belongs to the 8-bit microcontroller category, which uses an 8-bit data path. Within the broader hierarchy, it sits as: PIC12C508A -> PIC12C5xx family -> PIC architecture -> 8-bit MCU -> microcontroller -> embedded computing IC. This MCU variant uses CMOS process technology with EPROM/OTP-based program storage, distinguishing it from Flash-based 8-bit MCUs that allow multiple reprogram cycles. Key features include 33 single-word/single-cycle instructions, 1 microsecond instruction execution time at 4MHz, 6 general-purpose I/O pins, a hardware 8-bit timer (TMR0) with 8-bit programmable prescaler, watchdog timer with on-chip RC oscillator, power-on reset, and in-circuit serial programming (ICSP) capability. The device also offers 4 oscillator options: RC, LP, XT, and HS, providing flexibility across low-power and high-speed applications. Power consumption is typically under 2 mA active at 5V/4MHz and below 1 microamp in sleep mode. The PIC12C508A-04/P employs a Harvard RISC architecture with separate program and data buses, and 12-bit wide instructions yielding 2:1 code compression over comparable 8-bit CISC controllers. The -04 speed suffix designates 4MHz operation, and the /P suffix indicates a PDIP-8 (300 mil) through-hole package. Operating voltage spans 2.5V to 5.5V across commercial and industrial temperature ranges (0C to +70C for commercial, -40C to +85C for industrial). The OTP nature of program memory means firmware is programmed once via Microchip's MPLAB ecosystem and cannot be field-updated. Typical applications include appliance control modules, LED driver controllers, simple sensor interfaces, low-end consumer electronics, and battery-powered devices. Its small 8-pin footprint and 33-instruction RISC core suit designs where PCB real estate is constrained and code volume is below 768 bytes. The device is widely deployed in cost-sensitive mass-production units. Design consideration: Because the program memory is OTP, a burned device cannot be reprogrammed, so engineers should always verify code with a development-friendly equivalent (such as the PIC12F508 with Flash memory) before committing to OTP volume production. The /P 8-pin PDIP variant is also ideal for through-hole prototyping and hobby projects. This page consolidates distributor pricing, pin-compatible drop-in alternatives, and practical design considerations that go beyond the manufacturer datasheet summary.

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PIC12C508A-04/SM - 8-Bit 4MHz OTP MCU, 8-SOIJ | Microchip
PIC12C508A-04/SM

PIC12C508A-04/SM - 8-Bit 4MHz OTP MCU, 8-SOIJ | Microchip

The Microchip Technology PIC12C508A-04/SM is an 8-bit, RISC-based CMOS microcontroller from the PIC12C5xx family, packaged in an 8-lead Small Outline IC (SOIJ) form factor. It executes instructions in a single 1 us cycle (4 MHz oscillator) and integrates 768 bytes of One-Time-Programmable (OTP) program memory (512 x 12 words), 25 bytes of general-purpose RAM, and six general-purpose I/O pins within an extremely compact 8-pin footprint. Operating from 3.0 V to 5.5 V across the commercial 0 C to +70 C range, the PIC12C508A is one of the smallest OTP microcontrollers Microchip has ever offered. What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a single-chip computer that processes data in 8-bit chunks and is the workhorse of cost-sensitive embedded control. OTP (One-Time-Programmable) memory can be written exactly once, which lowers die cost versus Flash and suits high-volume, fixed-function products. Within the hierarchy: microcontroller -> embedded controller -> semiconductor, the PIC12C5xx family sits at the small-footprint, low-pin-count tier aimed at replacing discrete logic and small electromechanical timers. Key differentiating features include: (1) only 33 single-word, single-cycle instructions, enabling extremely compact code; (2) 8-bit timer/counter (TMR0) with 8-bit prescaler; (3) internal 4 MHz RC oscillator option eliminating the external crystal in many designs; (4) watchdog timer with on-chip RC oscillator for reliable reset behavior; and (5) in-circuit serial programming (ICSP) capability even on the 8-pin package. Each instruction executes in 1 microsecond at 4 MHz, yielding roughly 1 MIPS performance. Architecturally, the PIC12C508A uses a Harvard-style RISC core with separate program and data buses, an 8-level deep hardware stack, and a 2-level instruction pipeline. This is sufficient for state machines, simple sensor conditioning, and logic-replacement tasks, but it is not designed for USB, Ethernet, or display interfaces. The CMOS process gives very low power consumption (typically < 2 mA active, < 1 uA standby), enabling battery-friendly designs. Typical applications include appliance timers, fan/HVAC controls, security-system keypads, IR remote-control transmitters, battery chargers for low-end consumer goods, automotive body controllers (when paired with the I-grade variant), and small consumer toys. The wide operating voltage range makes it suitable for both 3.3 V and 5 V rails, and the SOIJ package is friendly to wave-solder and reflow profiles. When designing in this part, pay attention to the OTP-only nature: code must be 100 percent verified before programming, since there is no way to re-flash a defective unit. Always budget the GP3/MCLR shared-pin behaviour and ensure adequate decoupling on VDD (0.1 uF) close to the package. OTP programming reduces unit cost versus Flash in volume production, but increases development risk for prototypes. This page synthesizes distributor stock levels, drop-in same-package alternatives from the PIC12C5xx/12F5xx family, and practical PCB design notes that go beyond the information found in the standalone manufacturer datasheet.

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PIC12C508A-04E/P - 8-bit 4MHz OTP MCU, 8-PDIP, Extended Temp | Microchip
PIC12C508A-04E/P

PIC12C508A-04E/P - 8-bit 4MHz OTP MCU, 8-PDIP, Extended Temp | Microchip

The Microchip Technology PIC12C508A-04E/P is an 8-bit CMOS OTP-based PIC microcontroller delivering 4 MHz instruction execution from 33 single-word RISC instructions in an 8-pin PDIP through-hole package. It integrates 768 bytes (512 x 12) of OTP program memory, 25 bytes of RAM, and 6 general-purpose I/O pins, with a 4 MHz internal/external clock domain suited for compact logic-replacement designs. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory (ROM/OTP/Flash), data RAM, and peripheral set. Within the broader hierarchy, the PIC12C508A belongs to the PIC12C5xx family of 8-bit microcontrollers -> the Microchip PIC microcontroller family -> the 8-bit MCU class -> the microcontroller category -> the embedded processing semiconductor class. The 'C' suffix denotes CMOS OTP process, the 'A' marks a die-revision upgrade, the '04' specifies the 4 MHz speed grade, 'E' marks the extended temperature range (-40C to +125C), and '/P' indicates the PDIP-8 package. Key features include a 1 microsecond instruction cycle (4 MHz oscillator divided by 4), an 8-bit timer/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 without external components. Programmable code protection is supported and 1,000,000 erase/write cycles endurance is rated. Architecturally, the PIC12C508A employs a RISC Harvard architecture with separate program and data paths, enabling single-cycle instruction execution except for branches. The CMOS OTP process delivers low static power consumption, and the in-circuit serial programming (ICSP) interface enables firmware updates via two pins, simplifying prototyping. Typical applications include logic replacement (replacing discrete 555/4017 circuits with one chip), appliance controllers, white-goods user interfaces, low-end automotive body electronics, remote-control transmitters, sensor signal conditioning, simple PWM/sequence generators, and battery-powered devices where the 8-pin footprint and low pin count fit the application. When designing with this device, note that OTP is one-time-programmable: firmware must be fully verified before burn. For extended temperature operation ensure the 'E' suffix part is specified; the standard '04/P' variant operates only 0C to +70C. The 6 I/O pins share package pins with VDD/VSS/GP3-only, so multi-function pin assignment requires careful review against the pinout. This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives, and practical design considerations not consolidated on any single datasheet.

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PIC12C508A-04I/P - 8-bit 4MHz OTP MCU 768B | Microchip
PIC12C508A-04I/P

PIC12C508A-04I/P - 8-bit 4MHz OTP MCU 768B | Microchip

The Microchip Technology PIC12C508A-04I/P is an 8-bit CMOS microcontroller based on Microchip's Enhanced PIC16C5X RISC core, packaged in an 8-pin PDIP through-hole package. The device integrates 768 bytes (512 x 12 words) of One-Time-Programmable (OTP) program memory, 25 bytes of RAM, and 6 general-purpose I/O pins, executing instructions at a 1 microsecond per instruction cycle when clocked at 4 MHz. Operating voltage spans 2.5V to 5.5V, making it compatible with both 3.3V and 5V rails commonly found in industrial and appliance designs. What is a PIC12C5XX microcontroller? The PIC12C5XX family from Microchip Technology represents a class of low-cost, high-performance 8-bit fully-static CMOS microcontrollers built on a RISC architecture with only 33 single-word single-cycle instructions. Within the taxonomy, PIC microcontrollers belong to the broader category of microcontrollers (MCUs) -> embedded controllers -> semiconductor ICs. This minimalist instruction set, combined with a Harvard memory architecture, gives the PIC12C508A deterministic interrupt latency and predictable timing - qualities valued in automotive, appliance, and consumer products where code simplicity is paramount. Key features of the PIC12C508A-04I/P include an internal 4 MHz RC oscillator (with the -04 speed designation), an on-chip power-on reset, a watchdog timer with its own on-chip RC oscillator for reliable operation without external components, and code protection to prevent unauthorized memory reads. The 8-pin PDIP form factor is the most user-friendly package for prototyping and low-volume production, accepting standard DIP sockets and breadboards. Technically, the device uses a 12-bit instruction word that is byte-addressable through a 7+2 special function register + 25 general purpose register file. Power consumption is rated in the microamp range during sleep mode with the watchdog timer active, and the device supports in-circuit serial programming (ICSP) for production-line firmware loading even after the OTP window has been sealed. Typical applications include automotive sensor interfaces, appliance controls (washing machines, microwaves), security keypads, simple sensor conditioning, battery chargers, and low-cost consumer products. The industrial temperature range (-40C to +85C) is indicated by the 'I' suffix in the part number. Designers should note that OTP memory can only be programmed once - development should use the PIC12C508A-04/P (extended temperature, no 'I' suffix denotes commercial 0C to +70C) or a Flash-based pin-compatible PIC10F200/202/220/222 for prototyping. The 6 I/O pins share functions with the comparator, timer, and ICSP interfaces, so careful pin allocation is required. This page synthesizes distributor inventory, same-brand drop-in alternatives, and practical design notes that are not aggregated in a single manufacturer datasheet, giving engineers a faster path to sourcing and validation.

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PIC12C508A-04I/SM - 8-bit 4MHz OTP MCU, 8-SOIJ | Microchip
PIC12C508A-04I/SM

PIC12C508A-04I/SM - 8-bit 4MHz OTP MCU, 8-SOIJ | Microchip

The Microchip Technology PIC12C508A-04I/SM is an 8-bit, fully-static CMOS microcontroller built on the PIC® 12C RISC architecture, offered in an 8-pin SOIJ package. It executes 33 single-word/single-cycle instructions, delivers 1 µs instruction execution at 4 MHz, and integrates 768 bytes of OTP program memory (512 x 12) and 25 bytes of general-purpose RAM. The device operates from 3 V to 5.5 V and is rated for the industrial temperature range of −40 °C to +85 °C. A microcontroller (MCU) is a single-chip computer containing a CPU, program and data memory, and I/O peripherals. MCUs sit within the broader taxonomy of embedded processors -> microcontrollers -> 8-bit microcontrollers -> CMOS RISC microcontrollers. The 12-bit program word width and Harvard bus architecture of the PIC12 family are deliberately simple, enabling deterministic timing and very small silicon footprints for cost-sensitive embedded applications. Key features include an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler, a Watchdog Timer (WDT) with its own on-chip RC oscillator, Power-On Reset (POR), Device Reset Timer (DRT), and programmable code protection. The internal 4 MHz oscillator eliminates external timing components, freeing all eight pins for application use. The SOIJ-8 footprint allows direct reflow soldering on standard SMT lines. The architecture separates program memory (12-bit OTP) from data memory (8-bit-wide registers), enabling single-cycle instruction fetch and decode. The reduced 33-instruction RISC instruction set simplifies code generation, while the 200 ns minimum instruction cycle at 4 MHz (when derived from the internal RC oscillator divided appropriately) provides ample throughput for glue-logic replacement, sequencer, and protocol-translation tasks. Typical applications include low-cost consumer appliance control, sensor-interface front-ends, automotive interior accessories, industrial timing and sequencing, and PIC12C508 pin-compatible upgrades. The wide operating voltage window supports both 3.3 V and 5 V rails commonly found in mixed-signal systems, allowing the part to coexist with low-power sensors and 5 V relay drivers. When designing with this device, pay attention to OTP one-time programmability — once blown, code cannot be changed. For prototyping or field-upgradable designs, choose the Flash-based PIC12F508 successor (same pinout, larger memory, in-circuit serial programming). Decoupling the VDD pin with a 0.1 µF ceramic capacitor adjacent to the package is recommended for stable internal RC operation. This page synthesizes distributor pricing, pin-compatible same-family alternatives, and practical design notes not aggregated on the manufacturer datasheet, enabling faster sourcing decisions for engineers migrating legacy PIC12C508A designs to current production.

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PIC12C508A/JW - 8-bit EPROM MCU, 4MHz, 768B, UV | Microchip
PIC12C508A/JW

PIC12C508A/JW - 8-bit EPROM MCU, 4MHz, 768B, UV | Microchip

The Microchip Technology PIC12C508A/JW is an 8-bit CMOS RISC microcontroller housed in an 8-pin ceramic CDIP (JW) windowed package, designed for prototype and development use of one-time-programmable (OTP) PIC12C508A code. It executes instructions in a 1-microsecond cycle at 4 MHz and is based on the Enhanced PIC16C5X core with 33 single-word, single-cycle instructions. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and programmable I/O peripherals. The PIC12C508A belongs to the 8-bit microcontrollers -> PIC microcontrollers -> PIC12C family product hierarchy. It targets cost-sensitive embedded applications where a minimal 8-pin footprint and predictable deterministic execution are required. The /JW windowed package is specifically intended for erasing the EPROM via UV light during code development and prototyping, not for production deployment. Key features include 768 bytes of EPROM program memory (512 x 12), 25 bytes of RAM, 6 programmable I/O lines, an internal 4 MHz RC oscillator, an internal power-on reset, a watchdog timer, and power-saving SLEEP mode. The device operates from 2.5V to 5.5V across commercial 0C to +70C (this JW variant) and consumes less than 2 mA at 5V, 4 MHz. It is pin-compatible with the PIC12C508, PIC12CE518, and PIC12F508/509 Flash families, simplifying code migration during product transitions. The PIC12C508A uses a Harvard RISC architecture with separate program and data buses, a 12-bit wide instruction word delivering 2:1 code compression over typical 8-bit CISC controllers, and a hardware stack only two levels deep. The reduced instruction set and deterministic timing simplify real-time control firmware and embedded interrupt handling. The integrated MCLR/GP3 pin serves dual functions as master clear and general-purpose I/O with interrupt capability. Typical applications include low-cost appliance controllers, sensor signal conditioning, intelligent sensor front-ends, simple PWM LED drivers, automotive body modules (industrial grade variants), and educational/development kits where the EPROM window allows iterative code erase/reprogram cycles. Designers evaluating firmware before committing to OTP PIC12C508A-04/P or flash PIC12F508-I/P production parts use the JW package in the design phase. When designing with this MCU, ensure the GP3/MCLR pin is properly biased because it serves as both master clear and I/O. The device lacks an on-chip UART or ADC, so designers requiring analog or serial communication must add external components or migrate to the PIC12F675/683 Flash family with integrated peripherals. The JW ceramic windowed package is significantly more expensive than the plastic PDIP production version and should not be used in final production. This page synthesizes distributor pricing, drop-in package-compatible alternatives (PIC12C508A-04/P, PIC12F508-I/P), and practical design guidance not found in the manufacturer datasheet alone.

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PIC12C508AT-04E/SM - 8-bit 4MHz OTP MCU, 768B, 6 I/O | Microchip
PIC12C508AT-04E/SM

PIC12C508AT-04E/SM - 8-bit 4MHz OTP MCU, 768B, 6 I/O | Microchip

The Microchip Technology PIC12C508AT-04E/SM is an 8-bit, RISC-architecture CMOS microcontroller (MCU) with 4 MHz maximum clock speed, 768 bytes (512 × 12) of one-time programmable (OTP) program memory, and 25 bytes of data RAM, packaged in an 8-pin SOIJ (SM) with extended temperature grade support. An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, program memory, data RAM, and I/O peripherals in a small form factor. The PIC12C508AT belongs to Microchip's PIC12C family, which sits inside the broader 8-bit PIC microcontroller hierarchy (8-bit MCU → microcontroller → embedded controller → semiconductor). These MCUs are widely used in cost-sensitive, space-constrained, and deterministic-control designs where low power and a minimal instruction set are more valuable than raw throughput. Key features include 33 single-word instructions, 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 on-chip RC oscillator, programmable code protection, and an operating voltage range of 2.5 V to 5.5 V (extended). The part supports six general-purpose I/O pins and offers 1,000,000 erase/write cycles per the device family rating. Architecturally, the PIC12C508AT uses Harvard-style separate program and data paths with a 12-bit instruction word, enabling 200 ns instruction execution at 4 MHz. The OTP program memory (EPROM) is written during production or in-system once, supporting small-to-medium volume embedded products. The on-chip watchdog timer with its dedicated internal RC oscillator guarantees reliable operation even if the main system clock is disrupted, which is essential in industrial and automotive environments. Typical applications include low-cost consumer appliances, sensor signal conditioning, LED lighting controllers, automotive body electronics (subsystems), small motor control, and remote-control transmitters. The wide 2.5 V-5.5 V supply range and extended operating temperature range allow the part to drop into battery-powered and harsh-environment designs. When designing with this device, allocate sufficient time for OTP programming during pilot builds because OTP memory cannot be reprogrammed in-circuit. Always enable the watchdog timer in firmware and consider the EPROM device lifecycle (typically 1,000,000 erase/write cycles) when planning field updates. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers an at-a-glance comparison for sourcing and second-source planning.

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PIC12C508AT-04E/SN - 8-bit OTP MCU, 768B, 4MHz, SOIC-8 | Microchip
PIC12C508AT-04E/SN

PIC12C508AT-04E/SN - 8-bit OTP MCU, 768B, 4MHz, SOIC-8 | Microchip

The Microchip Technology PIC12C508AT-04E/SN is an 8-bit CMOS OTP-based microcontroller in an 8-pin SOIC package, operating at up to 4 MHz with 768 bytes (512 x 12) of program memory and 25 bytes of RAM. It uses a 12-bit instruction word PIC RISC architecture delivering 1 microsecond instruction execution with only 33 single-word instructions. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable I/O peripherals. The PIC12C508A belongs to the Microchip PIC10/12 family of small-form-factor 8-pin controllers, positioned within the broader category of microcontrollers -> microprocessors -> embedded computing -> semiconductors. These compact MCUs are the lowest-cost entry point into the PIC ecosystem and are widely deployed as glue logic replacement, sensor interface controllers, and standalone timed-control supervisors. Key features include 6 bidirectional I/O pins, an 8-bit real-time counter (TMR0) with an 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), a Watchdog Timer (WDT) with its own dedicated on-chip RC oscillator, programmable code protection, and 1,000,000 erase/write cycles typical endurance. The extended (-40C to +125C) operating temperature range and 3.0V-5.5V supply range make it suitable for harsh industrial environments. The PIC12C5XX architecture implements Harvard-style separate program/data paths with a 12-bit instruction word, achieving approximately 2:1 code compression over typical 8-bit microcontrollers. Its baseline core omits hardware interrupts, prioritizing code density and deterministic timing over peripheral integration - the result is a low-cost deterministic engine for tightly looped timing or state-machine tasks. Typical applications include appliance control, automotive sensor interfaces, simple sensor signal conditioning, low-cost timing controllers, and small logic replacements where an MCU adds flexibility at lower BOM cost than discrete logic. The 4 MHz internal RC option enables a clockless BOM in cost-sensitive designs. When designing, ensure Vdd decoupling uses a 0.1uF ceramic capacitor placed within 5 mm of the Vdd pin. MCLR must be tied to Vdd through a pull-up if not used externally to prevent spurious resets. With only six usable I/O, careful pin budgeting at the schematic stage is critical. This page synthesizes distributor pricing, drop-in alternatives, pin-by-pin replacement guidance, and design notes not found aggregated in the manufacturer datasheet.

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PIC12C508AT-04I/SN - 8-bit OTP MCU, 768B, 4MHz, 8-SOIC | Microchip
PIC12C508AT-04I/SN

PIC12C508AT-04I/SN - 8-bit OTP MCU, 768B, 4MHz, 8-SOIC | Microchip

The Microchip Technology PIC12C508AT-04I/SN is a baseline PIC12 family 8-bit CMOS OTP-based microcontroller that delivers 1 microsecond instruction execution in an 8-pin SOIC package. It integrates a PIC RISC CPU core running at 4 MHz with 768 bytes (512 x 12) of OTP program memory, 25 bytes of RAM, and 6 I/O pins, all powered from a 3.0V to 5.5V supply. The "-04" suffix indicates 4 MHz maximum oscillator frequency, the "T" indicates tape and reel packaging, and the "I" denotes the industrial temperature grade of -40C to +85C. A PIC12C5xx-class microcontroller belongs to the 8-bit microcontroller family, which in turn sits within the broader category of microcontrollers (MCUs) and embedded controllers in semiconductor systems. These 8-bit MCUs are widely used in cost-sensitive, low-pin-count applications because they combine a compact footprint with deterministic RISC execution and a small, easy-to-learn instruction set. The PIC12C5xx uses only 33 single-word instructions and provides 2:1 code compression over typical 8-bit CISC competitors, allowing small OTP programs to deliver meaningful control functionality. Key features of the PIC12C508AT-04I/SN include the 4 MHz internal/external oscillator option, six general-purpose digital I/O pins, a power-on reset (POR) circuit, a watchdog timer (WDT) with on-chip RC oscillator, a programmable code protection mechanism, and an in-circuit serial programming (ICSP) interface. The device offers low power consumption with typical sleep current in the microamp range and supports operating voltages from 3.0V to 5.5V. The 12-bit wide instruction word and Harvard architecture allow single-cycle instruction fetch and execution. Architecturally, the PIC12C508A combines a RISC engine with separate program and data buses (Harvard architecture), enabling simultaneous instruction fetch and data access. The OTP program memory uses 12-bit-wide words, providing efficient encoding for the 33-instruction RISC set. On-chip peripherals include an 8-bit real-time timer/counter (TMR0), a watchdog timer with its own dedicated RC oscillator, and a power-on reset generator, eliminating many external components and reducing BOM cost. Typical applications include appliance control, automotive body electronics (after market), industrial control, intelligent instrumentation, remote transmitters, security systems, and small consumer products such as LED drivers, fan controllers, and battery chargers. The 8-pin footprint makes it suitable for space-constrained PCB designs where simple, deterministic logic replacement is required. When designing with this part, note that OTP memory is one-time programmable, so code must be fully verified before production programming. Decoupling capacitors (typically 0.1 uF ceramic) should be placed close to VDD, and unused I/O pins should be configured as outputs to minimize power consumption. For new designs, evaluate the PIC10F200/PIC10F202 or PIC12F508 flash-based equivalents, which support in-circuit reprogramming and may reduce development time. This page synthesizes distributor pricing, drop-in OTP and flash-replacement alternatives, and practical design notes not found in the manufacturer datasheet alone. Engineers can use the comparison table and design notes below to evaluate the PIC12C508AT-04I/SN against modern flash alternatives.

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PIC12C508T-04/SM - 8-Bit 4MHz OTP MCU 768B | Microchip
PIC12C508T-04/SM

PIC12C508T-04/SM - 8-Bit 4MHz OTP MCU 768B | Microchip

The Microchip PIC12C508T-04/SM is an 8-bit RISC microcontroller in the PIC12C5xx family, offering 4 MHz maximum operating frequency, 768 bytes of One-Time-Programmable (OTP) program memory (organized as 512 x 12-bit words), and 25 bytes of RAM in a compact 8-pin SOIJ surface-mount package. It is the tape-and-reel packaging variant of the PIC12C508-04/SM with identical silicon and electrical characteristics. An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, program memory (ROM/EPROM/Flash/OTP), data RAM, and peripheral interfaces such as I/O ports, timers, and sometimes comparators or ADCs. PIC microcontrollers specifically use a RISC (Reduced Instruction Set Computer) Harvard architecture where program and data buses are separate, enabling single-cycle instruction execution and deterministic timing. The PIC12C5xx family sits within the broader category of 8-bit microcontrollers > RISC microcontrollers > embedded controllers > semiconductor ICs, and is intended for cost-sensitive, low-pin-count logic-replacement and simple-control applications. Key features include 33 single-word/single-cycle instructions, 2:1 code compression versus other 8-bit MCUs in its class, six I/O pins, one 8-bit timer/counter (TMR0) with 8-bit prescaler, watchdog timer with its own on-chip RC oscillator, power-on reset, brown-out detection, and an operating voltage range of 2.5 V to 5.5 V. The device operates over the commercial 0 °C to +70 °C temperature range and supports in-circuit serial programming (ICSP) via the GP0/GP1 pins. Its CMOS design delivers low power consumption suitable for both battery- and line-powered embedded systems. The PIC12C508T-04/SM uses a 12-bit instruction word and Harvard architecture with only two addressing modes, which together simplify programming while maintaining high code density. Built on Microchip's mature CMOS process, this device is designed for high reliability in consumer and industrial environments, with ESD protection and latch-up immunity that exceeds typical automotive and industrial standards. The 8-SOIJ package provides a compact 3.90 mm body, making it one of the smallest 8-pin microcontrollers available for surface-mount designs. Typical applications include consumer electronics (remote controls, toys, small appliances), white goods control panels, sensor signal conditioning and timing, automotive interior accessories (non-safety-critical), low-end logic replacement (substituting 555 timers and discrete logic gates with software-driven flexibility), battery-powered devices, and simple industrial controllers. Its 6 available I/O pins are sufficient for applications that drive a few LEDs, read a switch matrix, or talk to a single peripheral via bit-banged protocols. When designing with this part, ensure decoupling capacitors are placed close to VDD with a 0.1 µF ceramic recommended. Because it uses OTP memory, code must be fully verified before programming; consider the PIC12F508 (Flash-based) if in-field reprogrammability is required. Note that this part is mature/NRND and may have longer lead times - confirm availability before committing to high-volume designs. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC12C508T-04E/SM - 8-Bit 4MHz OTP MCU 768B | Microchip
PIC12C508T-04E/SM

PIC12C508T-04E/SM - 8-Bit 4MHz OTP MCU 768B | Microchip

The Microchip Technology PIC12C508T-04E/SM is an 8-bit, fully-static CMOS microcontroller in the PIC12C5xx family, housed in an 8-pin SOIJ surface-mount package. It integrates a 33-instruction RISC core running at 4 MHz, 768 bytes (512 x 12) of One-Time Programmable (OTP) program memory, and 25 bytes of data RAM, making it a compact, low-cost solution for simple embedded control tasks. What is an 8-bit OTP microcontroller? An 8-bit OTP MCU is a small single-chip computer that executes one instruction per clock cycle through a reduced-instruction-set core, where program memory is written once at production or in-circuit and cannot be electrically erased. The PIC12C5xx family sits in the hierarchy: 8-bit microcontroller -> RISC microcontroller -> embedded MCU -> semiconductor. It is designed for cost-sensitive, space-constrained applications where a full flash-based MCU would be overkill. Key features include a 4 MHz maximum operating frequency, 2.0 V to 5.5 V supply range, an integrated 8-bit timer/counter (TMR0) with 8-bit programmable prescaler, watchdog timer with its own on-chip RC oscillator, power-on reset (POR), device reset timer (DRT), and selectable 4 MHz or 37 kHz internal oscillator modes. The PIC12C508T-04E/SM operates across the extended -40°C to +125°C temperature range. The device uses a 12-bit instruction word architecture yielding a 2:1 code compression advantage over competing 8-bit MCUs, allowing more functional code in 768 bytes of OTP than most peers. With only 33 single-word/single-cycle instructions, the learning curve is short and interrupt latency is deterministic. Typical applications include consumer electronics remote controls, sensor interface front-ends, LED driver controllers, small appliance control boards, battery chargers, and low-end industrial control modules where minimal BOM and small footprint matter most. When designing with this part, note that the OTP memory cannot be reprogrammed in the field - choose the PIC12C508A flash-based variants or the PIC10F/12F series for development or in-field updates. The '04' speed suffix denotes the 4 MHz internal oscillator; the 'E' suffix denotes the extended temperature grade. This page synthesizes distributor pricing, verified drop-in alternatives, application context, and design considerations not aggregated in the manufacturer datasheet alone.

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PIC12C509-04/P - 8-Bit 4MHz OTP MCU 1.5KB | Microchip
PIC12C509-04/P

PIC12C509-04/P - 8-Bit 4MHz OTP MCU 1.5KB | Microchip

The Microchip Technology PIC12C509-04/P is an 8-bit CMOS one-time-programmable (OTP) microcontroller from the baseline PIC12C family, packaged in a 8-pin PDIP through-hole format. It executes instructions in 200 ns at a 4 MHz clock rate and integrates 1.5 KB (1K x 12) of OTP program memory, 41 bytes of data RAM, and 6 general-purpose I/O pins on an 8-pin footprint. An 8-bit microcontroller is a single-chip computer that processes data in 8-bit-wide chunks using a Harvard or modified-Harvard architecture; in the Microchip taxonomy it sits under the PIC family, which is itself a sub-family of microcontrollers, embedded controllers, and ultimately standard ICs. OTP variants are programmed once by the user or contract manufacturer, in contrast to flash-based PICs that allow field re-programming, which makes them attractive for low-cost, high-volume, fixed-function applications. Key features include a RISC core with 33 single-cycle instructions, a programmable 4 MHz internal/external oscillator option, a watchdog timer with its own on-chip RC oscillator for reliable recovery, power-saving Sleep mode, and a wide operating voltage range of 2.5 V to 5.5 V. The 8-pin footprint gives 6 usable I/O lines plus VDD and VSS, with each I/O capable of sourcing up to 25 mA for direct LED drive. The device is qualified for the standard 0 °C to +70 °C commercial temperature range (the -04 speed grade and /P PDIP suffix) and is RoHS-compliant. Typical applications span low-cost consumer appliances, hobby/educational projects, simple sensor interfaces, and replacement of discrete logic. Designers should leave enough PCB area for the through-leads and apply decoupling capacitors within 5 mm of VDD/VSS; the MCLR pin must be tied high through a resistor for normal operation and pulled low only for in-circuit serial programming.

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PIC12C509-04/SM - 8-Bit 4MHz OTP MCU | Microchip | 8-SOIC
PIC12C509-04/SM

PIC12C509-04/SM - 8-Bit 4MHz OTP MCU | Microchip | 8-SOIC

The Microchip Technology PIC12C509-04/SM is an 8-bit CMOS OTP-based microcontroller operating at up to 4 MHz, integrating 1.5 KB (1K x 12) of One-Time-Programmable program memory, 41 bytes of RAM, and 6 general-purpose I/O pins in an 8-lead SOIJ (SOIC-8, 5.30 mm body width) surface-mount package. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, a compact instruction set, on-chip program memory, working RAM, and configurable I/O. The PIC12C509 belongs to Microchip's foundational PIC12C sub-family of 8-pin mid-range devices, occupying the hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC12 family -> PIC12C5xx OTP series -> semiconductor. These devices are favored for legacy designs, cost-sensitive consumer products, and applications where Flash reprogrammability is not required. Key features include 25 mA source/sink capability per I/O pin (sufficient to drive small relays, LEDs, or power MOSFET gates directly), four selectable oscillator modes including a factory-calibrated internal 4 MHz RC oscillator, on-chip Power-on Reset (POR), and an instruction execution time of 1 microsecond at 4 MHz. The device is supported by a 33 single-word instruction set optimized for code density, and its 8-pin footprint enables compact PCB designs. The PIC12C509 uses a Harvard-architecture RISC core with separate program and data buses. The 12-bit-wide instruction word delivers a typical 2:1 code compression over competing 8-bit architectures, allowing more functionality in the constrained 1.5 KB OTP. The OTP memory is programmed once via Microchip's ICSP (In-Circuit Serial Programming) interface and is not erasable; for field-updatable designs, the PIC12F509 (Flash-based successor) is recommended. Typical applications include small appliance control (coffee makers, fans, remote-control toys), low-end sensor signal conditioning, simple LED drivers, and replacement of discrete logic glue in legacy industrial systems. The wide operating temperature range (commercial 0C to +70C) supports indoor commercial and light-industrial use. When designing with this device, ensure that the selected oscillator mode is compatible with the application timing budget. Because the program memory is OTP, firmware must be fully validated before committing to production programming. The internal 4 MHz RC oscillator is factory-calibrated, eliminating external crystal components in cost-sensitive designs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes compiled from manufacturer datasheets and authorized distributor listings, providing information gain beyond what a single datasheet or catalog entry offers.

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PIC12C509-04E/P - 8-bit OTP MCU, 1.5KB, 4MHz, PDIP-8 | Microchip
PIC12C509-04E/P

PIC12C509-04E/P - 8-bit OTP MCU, 1.5KB, 4MHz, PDIP-8 | Microchip

The Microchip Technology PIC12C509-04E/P is a member of the PIC12C 8-bit CMOS microcontroller family, featuring a 12-bit instruction word, 1.5 KB of One-Time-Programmable (OTP) program memory, 41 bytes of RAM, and six general-purpose digital I/O pins operating from a 4 MHz internal RC oscillator (extended temperature grade) inside an 8-pin PDIP (0.300 inch / 7.62 mm pitch) through-hole package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral interfaces onto one silicon die. Within the broader taxonomy, the PIC12C509 sits at the bottom of the 8-bit RISC microcontroller hierarchy: microcontroller -> 8-bit MCU -> RISC MCU -> PIC architecture -> Microchip PIC12 sub-family -> PIC12C509 part. PIC12C devices are widely used as glue logic, timers, low-cost controllers, and OTP-based fixed-function modules where flash reprogrammability is not required. Key specifications of the PIC12C509-04E/P include a 4 MHz maximum operating frequency, a 1 us instruction cycle time (4 MHz oscillator / 4), 1.5 KB OTP program memory organized as 1K x 12 words, 41 bytes of data RAM, six I/O pins with 25 mA source/sink drive capability per pin, four oscillator selections (including the factory-calibrated internal 4 MHz RC), and Power-on Reset (POR). The "E" suffix designates the extended temperature range of -40C to +125C, while the "04" indicates the 4 MHz speed grade. Architecturally, the PIC12C509 uses Microchip's classic PIC RISC core with a two-stage pipeline and a single accumulator (W register). It supports 33 single-word instructions, has eight special function registers mapped into a small data RAM bank, and features a 5-bit GPIO port shared with the internal oscillator and MCLR functions. A watchdog timer with its own on-chip RC oscillator is optional for safety-critical applications. Typical applications include low-cost appliance control, sensor interface modules, battery chargers, LED controllers, and replacement of discrete logic in space-constrained designs. The extended temperature range allows use in automotive underhood environments and outdoor industrial equipment. Because the part is OTP rather than Flash, it is best suited to high-volume production where firmware is final and stable, rather than iterative prototyping. When designing with this device, allocate sufficient decoupling (a 0.1 uF ceramic on VDD close to the pin) and reserve the MCLR/VPP pin for in-circuit programming or tie it to VDD through a 10 kohm resistor for normal operation. Note that the PIC12C509 series has been succeeded by Flash-based PIC10F/PIC12F families for new designs; choose PIC12C509-04E/P only when matching an existing OTP BOM. This page synthesizes distributor stock data, drop-in alternatives from the PIC12C509 family, and practical design notes not found in the bare datasheet. All pricing reflects market conditions as of 2026-09-14.

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PIC12C509-04E/SM - 8-bit MCU 1.5KB OTP 4MHz SOIJ-8 | Microchip
PIC12C509-04E/SM

PIC12C509-04E/SM - 8-bit MCU 1.5KB OTP 4MHz SOIJ-8 | Microchip

The Microchip Technology PIC12C509-04E/SM is an 8-bit PIC12-series RISC microcontroller with 1.5 KB (1K x 12) One-Time-Programmable (OTP) program memory, 41 bytes of RAM, and 6 I/O pins, running at 4 MHz from a 2.5 V to 5.5 V supply in an 8-pin SOIJ (SM) surface-mount package. The "-04E" suffix indicates a 4 MHz internal oscillator speed grade and the "E" extended temperature range of -40 °C to +125 °C, while the "/SM" suffix denotes the SOIJ-8 (5.30 mm body) tube-packaged variant. An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, non-volatile program memory, RAM, and peripherals (timers, I/O, watchdog, reset) optimized for embedded control tasks. PIC12-series microcontrollers sit at the low end of Microchip's 8-bit PIC® family hierarchy: PIC12 -> PIC10/12/16/18 -> 8-bit PIC -> 8-bit microcontroller -> embedded MCU. They are valued for low cost, small footprint, and ease of use in cost-sensitive applications such as appliance control, sensor signal conditioning, and simple glue logic replacement. Key features of the PIC12C509-04E/SM include a Harvard RISC architecture with 33 single-word instructions and a 12-bit instruction word, an internal 4 MHz RC oscillator (no external crystal required), one 8-bit timer (TMR0) plus a Watchdog Timer (WDT), Power-On Reset (POR), 6 general-purpose digital I/O pins (5 true I/O plus 1 input-only), and brown-out-free low-power operation. The OTP program memory enables one-time factory or in-circuit programming, lowering unit cost relative to Flash-based MCUs. Typical applications include low-cost consumer appliance controllers (rice cookers, coffee machines, fans), sensor interfaces, LED driving, battery-powered timer circuits, and replacement of discrete logic or 555 timers. The wide 2.5 V to 5.5 V supply range allows direct operation from 3.3 V or 5 V rails without level shifting. The extended -40 °C to +125 °C temperature grade also makes this part usable in industrial environments. When designing with the PIC12C509-04E/SM, note that OTP memory cannot be re-programmed; for development, Microchip recommends the PIC12F509 Flash equivalent in the same 8-pin footprint. Decoupling VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin is essential. Reset is internal - no external MCLR pull-up is required when using the internal POR. This page synthesizes distributor pricing, drop-in OTP and Flash alternatives, and practical design notes not found in the bare manufacturer datasheet. Compare before committing to the OTP-only variant for production volumes.

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