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PIC12LF1840T-I/SN - 8-bit XLP MCU, 7KB Flash, 32MHz | Microchip
PIC12LF1840T-I/SN

PIC12LF1840T-I/SN - 8-bit XLP MCU, 7KB Flash, 32MHz | Microchip

The Microchip PIC12LF1840T-I/SN is an 8-bit PIC microcontroller from the PIC12F series featuring eXtreme Low Power (XLP) technology, 7KB (4K x 14) of Flash program memory, 256 bytes of EEPROM, and 256 bytes of SRAM, all housed in an 8-pin SOIC (SN) package supplied on tape and reel. The device runs at up to 32 MHz from its internal oscillator and operates across a wide 1.8V to 3.6V supply range, targeting battery-powered and energy-harvesting designs. An 8-bit microcontroller (MCU) is a small single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral interfaces onto a single silicon die. Within the system hierarchy, MCUs sit between discrete logic and full microprocessors, occupying the role of programmable decision-makers in embedded systems. The 8-bit PIC12 family in particular targets compact, cost-sensitive applications where 6 or fewer I/O pins suffice, with variants like the PIC12LF1840 optimized for ultra-low standby current. Key features of the PIC12LF1840 include an enhanced mid-range core with 49 instructions and a 16-level hardware stack, four 10-bit ADC channels with selectable voltage reference, an enhanced Capture/Compare/PWM (ECCP) module, a comparator with selectable voltage reference, an integrated mTouch capacitive sensing module, and a Data Signal Modulator (DSM). Communication interfaces cover MI2C, SPI, and EUSART with auto-baud. Per I/O pin, the device can source or sink up to 25 mA, simplifying direct LED or transistor drive without external buffers. Architecturally, the device pairs a single-cycle ALU with self-read/write Flash, supporting field firmware updates and EEPROM emulation. The internal 32 MHz oscillator is factory-calibrated and selectable down to 31 kHz for low-power timing, while the nanoWatt XLP sleep modes drop current consumption into the nanoampere range - critical for coin-cell and energy-harvesting applications. Typical applications include battery-powered sensor nodes, IoT edge devices, capacitive touch user interfaces, LED lighting controllers, and low-cost consumer electronics. The combination of small footprint, low power, and rich peripherals also makes it suitable for automotive body electronics subsystems and industrial control front-ends. When designing with this part, prioritize decoupling close to VDD, keep analog traces short, and use the ICSP pins (RA0/RA1) carefully to avoid conflicts with high-impedance analog channels. The tape-and-reel -T suffix is intended for high-volume assembly. This page synthesizes verified distributor pricing, drop-in SOIC-8 alternatives, and practical design notes not aggregated on any single manufacturer or distributor page.

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PIC14000-04/SO - 8-Bit Mixed Signal MCU, 7KB OTP, 28-SOIC
PIC14000-04/SO

PIC14000-04/SO - 8-Bit Mixed Signal MCU, 7KB OTP, 28-SOIC

The Microchip PIC14000-04/SO is an 8-bit CMOS OTP-based mixed-signal microcontroller in the PIC14 family, integrating a 4 MHz RISC core with 7 KB (4K x 14) of OTP program memory and 192 bytes of SRAM in a 28-pin SOIC (0.295 inch / 7.50 mm width) package. The device executes instructions in a single 200 ns cycle (except program branches, which take two cycles) from a compact 35-instruction word set, and provides 20 digital I/O pins plus a rich analog front-end tailored for sensor and signal-conditioning tasks. Background: An 8-bit mixed-signal microcontroller is a single-chip computer that combines a CPU, non-volatile program memory (here, One-Time Programmable EPROM), RAM, digital I/O, and on-chip analog peripherals such as ADCs, DACs, references, and current sources. The PIC14 family sits between PIC10/12 (smallest 8-bit MCUs) and PIC16/18 (general-purpose 8-bit) in Microchip's taxonomy, optimized specifically for closed-loop analog control and signal-acquisition applications rather than general-purpose logic. Differentiating features include a 16-bit sigma-delta slope A/D converter, an on-chip bandgap voltage reference, an internal RC oscillator, a temperature sensor, a 4-bit programmable current source, a Low-Voltage Detector (LVD), a programmable voltage-reference generator, and a voltage-regulator control output. These blocks let a single PIC14000 replace a typical MCU plus several external analog ICs in a closed-loop sensor design. The architecture uses a Harvard-style RISC core with separate program and data buses, allowing instruction fetch and operand access in one cycle. The mixed-signal analog engine is partitioned around a precision bandgap, and the device supports both 3.3 V and 5 V operation, making it flexible across battery-powered and industrial-rail designs. Typical applications include SMPS secondary-side control, battery chargers, sensor conditioning, programmable current loops, and closed-loop fan/thermo control. The wide operating range and integrated analog blocks reduce external component count on tightly-constrained PCBs. Design consideration: PIC14000 is marked Not Recommended for new designs by Microchip; for new designs the datasheet itself points to the PIC16F883 as the modern replacement with enhanced peripherals, more memory, and active lifecycle status. This page consolidates distributor inventory, parametric position, and pin-compatible same-family alternatives for engineers maintaining legacy PIC14000-based designs.

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PIC14000-04/SS - 4MHz 8-bit Mixed Signal MCU 28-SSOP | Microchip
PIC14000-04/SS

PIC14000-04/SS - 4MHz 8-bit Mixed Signal MCU 28-SSOP | Microchip

The Microchip Technology PIC14000-04/SS is an 8-bit CMOS OTP-based mixed-signal microcontroller in a 28-pin SSOP package, integrating a 200 ns instruction-cycle RISC core with a 16-bit sigma-delta A/D converter, 4-bit programmable current source, bandgap voltage reference, internal temperature sensor, LVD (low-voltage detector), voltage-regulator control output, and a programmable reference generator. It delivers 4 MHz maximum clock speed, 7 KB (4K x 14) of OTP program storage, 192 bytes of data RAM, and 20 digital I/O lines, with an operating supply voltage of 2.7 V to 6.0 V across the commercial 0C to +70C range. According to the Microchip PIC14000 datasheet DS40122, the device is a member of the PIC® 14 family of mixed-signal controllers targeting power-supply monitoring and battery-charger analog front-ends. A mixed-signal microcontroller (MSMCU) combines a traditional digital MCU core with high-precision analog peripherals on a single die. In system hierarchies, the PIC14000 belongs to: MCU -> microcontroller -> embedded controller -> semiconductor IC. The PIC® 14 family was specifically designed for closed-loop analog control applications where a discrete MCU plus op-amp + ADC + DAC chain would be too large or expensive. Key differentiating features of the PIC14000-04/SS include its integrated 16-bit sigma-delta A/D converter (eliminating an external precision ADC), a programmable constant-current source for sensor excitation, on-chip bandgap reference with internal temperature sensor for self-monitoring, and LVD plus a voltage-regulator control PWM output that allows the device to act as the brain of a closed-loop switching supply. The 35-instruction RISC core is RISC architecture with Harvard bus and 200 ns instruction execution at 4 MHz. Typical applications include switching power supply control (PFC, battery chargers), closed-loop battery chargers, sensor signal conditioning, programmable current sources, and standalone analog front ends where a low pin-count mixed-signal MCU replaces a larger MCU + external ADC. When designing with this device, ensure the OTP programming step is budgeted into the production flow, as one-time-programmable memory cannot be field-updated. Decouple VDD with a 100 nF ceramic capacitor close to the pin and provide adequate bulk capacitance for the analog reference. This page synthesizes Microchip product-page information, distributor pricing (Mouser, DigiKey), drop-in same-package alternatives from the PIC14000 product family, and practical design notes that go beyond the manufacturer datasheet.

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PIC14000-04I/SO - 8-Bit 4MHz Mixed-Signal MCU | Microchip | 28-SOIC
PIC14000-04I/SO

PIC14000-04I/SO - 8-Bit 4MHz Mixed-Signal MCU | Microchip | 28-SOIC

The Microchip PIC14000-04I/SO is a 28-pin 8-bit mixed-signal microcontroller based on the PIC RISC architecture, featuring a 4 MHz CPU, 7 KB (4K x 14) OTP program memory and 192 bytes of SRAM, housed in an industrial-grade 28-SOIC package. The /SO suffix denotes the SOIC surface-mount package with industrial temperature grade (-40C to +85C). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals onto one silicon die. PIC MCUs use a RISC-based Harvard architecture, which separates program and data memory paths to allow simultaneous instruction fetch and operand access. The PIC14xx family extends this architecture with on-chip analog peripherals such as an 8-bit ADC, voltage reference, comparators, and a switched-capacitor bandgap, making the PIC14000 specifically a 'mixed-signal controller' rather than a pure digital MCU. Key features include 35 single-word instructions, all executing in a single cycle except program branches (which take two cycles), 200 ns instruction execution time at 20 MHz, 20 programmable digital I/O pins, 5 external interrupts, 6 internal interrupts, and an 8-bit ADC with 8 channels. The device supports multiple power-saving SLEEP modes and wakes via interrupt or reset. The 28-SOIC package provides 0.295 inch (7.50 mm) body width suitable for hand-soldering and reflow profiles in industrial designs. The PIC14000 architecture combines a RISC core with integrated analog blocks: an 8-bit successive-approximation ADC, an on-chip voltage regulator, programmable gain stages, and charge-balancing measurement circuitry. This analog integration allows direct interface to sensors such as thermocouples and bridge-type transducers without external signal conditioning. Typical applications include battery charging controllers, battery capacity monitoring, smart battery management, precision data logging, and standalone sensor signal conditioning. The device's combination of low-power SLEEP modes and on-chip analog makes it a fit for portable and energy-harvesting products where PCB area and BOM cost dominate. When designing with this part, note that the PIC14000 is OTP (one-time programmable) and is marked by Microchip as 'Not Recommended for new designs' (NRND). For new designs, select PIC16F or PIC18 families. The /SO package is compatible with standard SOIC-28 footprints but requires careful thermal and EMI layout around the analog inputs.

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PIC14000-20/SS - 8-Bit 20MHz Mixed-Signal MCU, 7KB OTP, 28-SSOP | Microchip
PIC14000-20/SS

PIC14000-20/SS - 8-Bit 20MHz Mixed-Signal MCU, 7KB OTP, 28-SSOP | Microchip

The Microchip PIC14000-20/SS is an 8-bit mixed-signal CMOS microcontroller built on the PIC14 architecture, integrating a high-performance RISC CPU with on-chip analog peripherals in a 28-pin SSOP package. Key headline parameters: 20 MHz maximum clock, 7 KB (4K x 14) OTP program memory, 192 bytes RAM, and 20 digital I/O pins. The device is specified for commercial-grade 0C to +70C operation. A mixed-signal microcontroller combines a digital microcontroller core with integrated analog peripherals such as ADCs, DACs, voltage references, and current sources on a single silicon die. This category, often called a Programmable Mixed Signal Controller (PMSC), sits within the broader hierarchy of microcontroller -> embedded controller -> semiconductor IC. Mixed-signal MCUs are widely used in closed-loop control, sensor signal conditioning, and power-management applications where a few analog channels are needed without the cost of a separate ADC chip. The PIC14000 integrates a 16-bit Sigma-Delta slope ADC, an on-chip temperature sensor, a bandgap voltage reference, a 4-bit programmable current source, a programmable reference generator, a low-voltage detector (LVD), and a voltage regulator control output. This analog integration reduces bill-of-materials count in closed-loop systems. The PIC RISC architecture executes instructions in 200 ns at 20 MHz, with all instructions single-cycle except program branches (two-cycle), and only 35 single-word instructions to learn. Typical applications include SMPS primary-side control, battery chargers, sensor signal conditioning, programmable current sources, industrial process controllers, and intelligent power management modules. The combination of OTP program memory, internal oscillator, and integrated voltage regulation makes the PIC14000 suited for cost-sensitive industrial designs. Designers should note that the PIC14000 is flagged as Not Recommended for new designs by Microchip. Existing designs may continue using the part, but new projects should evaluate PIC16 or PIC18 alternatives from Microchip's current portfolio. Decoupling, analog ground isolation, and adequate PCB thermal relief around the SSOP-28 pad are recommended for the 28-SSOP package. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC14000-20I/SP - 8-Bit 20MHz Mixed-Signal MCU | Microchip
PIC14000-20I/SP

PIC14000-20I/SP - 8-Bit 20MHz Mixed-Signal MCU | Microchip

The Microchip Technology PIC14000-20I/SP is a 28-pin programmable mixed-signal controller from the PIC® 14 family, integrating an 8-bit RISC CPU core with analog peripherals in a 28-SPDIP through-hole footprint. The device executes instructions at 20 MHz with a 200 ns instruction cycle, providing 7 KB (4K x 14) of OTP program memory, 192 bytes of SRAM, and 20 digital I/O lines. The PIC14000 belongs to the broader PIC microcontroller family (8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC). As an 8-bit mixed-signal MCU it combines a CPU, on-chip analog, and power-management peripherals in a single die, eliminating the need for external ADC and reference ICs in cost-sensitive analog control loops. Key features include an on-chip temperature sensor, a bandgap voltage reference, an internal RC oscillator, a Sigma-Delta slope A/D converter, a 4-bit programmable current source, an LVD (Low Voltage Detector), a voltage-regulator control output, and a programmable reference generator. The 35-instruction RISC ISA keeps code authoring simple, and only program-branch instructions take two cycles; every other single-word instruction executes in one cycle. The OTP program memory supports low-volume production, while the 192-byte SRAM and 8 hardware registers suit small closed-loop control tasks. The integrated Sigma-Delta slope A/D, current source, and bandgap reference let designers build closed-loop analog control (e.g., battery chargers, temperature regulators, current sources) with no external ADC chip. The on-chip LVD and regulator-control output simplify power-supply supervision and switching-converter interface, while the integrated analog blocks reduce BOM count and PCB area. Typical applications include battery chargers, switched-mode power supply controllers, temperature regulators, programmable current sources, smart battery management, and industrial process-control loops where the integrated analog front-end eliminates a separate ADC IC. When designing with this part, allocate OTP programming time during prototyping and verify the Sigma-Delta slope converter's sampling-rate limit against the closed-loop bandwidth you require; for higher throughput consider an external SAR ADC or migrate to PIC16/18 families. This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering notes beyond the Microchip datasheet summary, giving buyers and hardware engineers a single decision-ready reference.

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PIC14000-20I/SS - 7KB EPROM 8-bit MCU | Microchip SSOP-28
PIC14000-20I/SS

PIC14000-20I/SS - 7KB EPROM 8-bit MCU | Microchip SSOP-28

The Microchip Technology PIC14000-20I/SS is an 8-bit CMOS OTP-based mixed-signal microcontroller in a 28-pin SSOP package. Per the manufacturer datasheet, the device integrates a 7 KB EPROM program memory (4K x 14), 192 bytes of RAM, and 20 digital I/O lines, executing instructions in 200 ns at a 20 MHz clock. It belongs to Microchip's PIC® 14 product family and was specifically engineered for programmable mixed-signal control applications. A microcontroller (MCU) is a single-chip computer that contains a processor core, memory, and programmable I/O peripherals. The PIC architecture uses a RISC-based Harvard design with separate program and data paths, allowing most instructions to execute in one instruction cycle. The PIC14 family sits between the PIC16 and PIC12F sub-families in Microchip's lineup, targeting applications that need more analog integration than baseline PIC16 devices while keeping the pin count modest. Key features of the PIC14000-20I/SS include an on-chip temperature sensor, a bandgap voltage reference, an internal oscillator, a Sigma-Delta slope A/D converter, a 4-bit programmable current source, a low-voltage detector (LVD), a voltage-regulator control output, and a programmable reference generator. This integrated analog front end lets a single chip replace several external analog components, which is the defining characteristic of the PIC14 series. The industrial-grade operating range is -40 °C to +85 °C, suitable for factory and outdoor equipment. Typical applications include battery chargers, smart battery management, sensor conditioning, switching power supply control loops, and process control transmitters. Each application exploits the combination of the Sigma-Delta converter (for high-resolution slow signals like thermistors), the programmable current source (for 4-20 mA loop excitation), and the bandgap reference (for ratiometric measurements). When designing with this device, allocate oscillator configuration time before A/D conversion begins, and follow the datasheet's decoupling guidance (typically 0.1 µF VDD pin capacitor plus bulk capacitance) to keep the Sigma-Delta converter noise floor low. The PIC14000 is now in Microchip's "Not Recommended for new designs" status, so designers of new products should evaluate the modern PIC16F or PIC18 successors.

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PIC14000/JW - 8-Bit 4MHz Mixed-Signal MCU, 7KB EPROM, 28-CerDIP
PIC14000/JW

PIC14000/JW - 8-Bit 4MHz Mixed-Signal MCU, 7KB EPROM, 28-CerDIP

The Microchip Technology PIC14000/JW is an 8-bit programmable mixed-signal microcontroller IC operating at 4 MHz with 7KB (4K x 14) UV-erasable EPROM program memory, 192 bytes of RAM, and 20 I/O pins in a 28-pin ceramic DIP (CerDIP) windowed package. It is built around the PIC14 architecture using a RISC core with only 35 single-word instructions and 200 ns instruction execution time. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripheral interfaces on one die. The PIC family of microcontrollers uses a Harvard architecture RISC core, where program and data memories are physically separate, enabling faster instruction fetch and deterministic execution. The PIC14 sub-family is a programmable mixed-signal line that adds analog peripherals (slope A/D, bandgap reference, programmable current source, LVD, voltage regulator control output) to the standard digital PIC core, making it suitable for sensor signal conditioning and closed-loop control. Key features of the PIC14000/JW include an 8-channel slope A/D converter for low-frequency analog measurement, a 4-bit programmable current source for sensor excitation, an internal oscillator, an on-chip temperature sensor, a bandgap voltage reference, a Low-Voltage Detector (LVD), and a voltage regulator control output. The device supports 6 internal interrupts and 5 external interrupts, and operates from 4.5V to 5.5V across the commercial temperature range. The JW suffix indicates a windowed ceramic package, which allows UV erasure for development and reprogramming of the EPROM. Compared with OTP and Flash variants, the JW package is intended for prototyping, education, and low-volume engineering use where program memory must be repeatedly re-written. Typical applications include industrial sensor signal conditioning, battery charging controllers, closed-loop fan/thermostat control, and mixed-signal front-ends for instrumentation. The device is also widely used in engineering education because the JW windowed package supports repeated erase/program cycles for code experimentation. When designing with the PIC14000/JW, note that the ceramic DIP package is through-hole only, and the EPROM window must be covered during operation to prevent accidental UV erasure from ambient light. Program memory is limited to 4K words of 14-bit instructions, so code must be optimized for footprint. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer product page alone.

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PIC14000T-04/SO - 8-Bit 4MHz Mixed-Signal MCU, 7KB OTP, 28-SOIC
PIC14000T-04/SO

PIC14000T-04/SO - 8-Bit 4MHz Mixed-Signal MCU, 7KB OTP, 28-SOIC

The Microchip Technology PIC14000T-04/SO is a member of the PIC® 14 family of 8-bit CMOS mixed-signal microcontrollers, integrating on-chip analog peripherals around a 4 MHz RISC core with 7 KB (4K x 14) of One-Time-Programmable (OTP) program memory. Housed in a 28-pin SOIC (SO) package on tape-and-reel, the part is rated for the commercial temperature grade and operates from 3.3 V / 5 V rails with 200 ns instruction execution and a 35-word instruction set. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and a set of peripherals; the PIC14 line extends that template with analog peripherals such as a sigma-delta A/D slope converter, on-chip temperature sensor, bandgap voltage reference, 4-bit programmable current source, low-voltage detector (LVD), voltage regulator control output, and programmable reference generator. The PIC14000 thus sits in the hierarchy: MCU -> 8-bit microcontroller -> mixed-signal MCU -> PIC14 family -> CMOS OTP-based RISC. Key differentiating features include an on-chip temperature sensor and bandgap reference that eliminate external analog conditioning, an internal oscillator that reduces external component count, and a 4-bit programmable current source targeted at sensor excitation. The 7 KB OTP allows field-programmed code, while 35 single-word instructions keep the learning curve minimal for code development. The 28-SOIC package supports hand-soldering and standard 0.05-inch-pitch PCB footprints, suiting both prototyping and small-volume production. Architecturally, the PIC14000 combines a Harvard RISC core with sigma-delta analog front-end, achieving A/D conversion by oversampling rather than using a conventional successive-approximation register (SAR). The 200 ns instruction cycle (5 MHz effective clock / 4 MHz oscillator with internal 4x divider) gives roughly 5 MIPS throughput, and the 35-word instruction set is fully orthogonal. Industrial-grade silicon supports reliable operation in harsh environments. Typical applications include battery chargers with on-chip current source and temperature-compensated voltage reference, sensor-conditioning front-ends (thermocouple/RTD excitation), closed-loop fan-speed and motor-speed controllers, smart battery management with LVD-driven cutoff, and low-cost mixed-signal instrumentation. The 28-SOIC variant suits through-hole-style hand rework and 0.05" prototype boards. When designing with the PIC14000T-04/SO, allocate code space carefully within the 7 KB OTP budget, since OTP cannot be erased. Add a 0.1 uF decoupling capacitor close to VDD, and route the MCLR/VPP pin through a 10 kohm pull-up to allow in-circuit serial programming. This page synthesizes distributor pricing, drop-in PIC14000 family alternatives, application reference circuits, and practical design notes not consolidated on the manufacturer product page or distributor listings.

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PIC14000T-04/SS - 7KB OTP 8-Bit MCU 20 I/O 28-SSOP | Microchip
PIC14000T-04/SS

PIC14000T-04/SS - 7KB OTP 8-Bit MCU 20 I/O 28-SSOP | Microchip

The Microchip Technology PIC14000T-04/SS is an 8-bit CMOS mixed-signal microcontroller based on Microchip's PIC architecture, offering 7KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and 20 digital I/O pins in a 28-pin SSOP package. The core runs at 4 MHz with a 200 ns instruction execution time, and the part is supplied in Tape & Reel (T) packaging for high-volume assembly lines. A PIC microcontroller is a RISC-based 8-bit microcontroller family manufactured by Microchip Technology, widely used in embedded control applications. It belongs to the broader hierarchy of microcontrollers -> microprocessors -> integrated circuits -> semiconductors. PIC MCUs are characterized by their Harvard architecture, single-cycle instruction execution (except branches), and a small instruction set (typically 35 single-word instructions for the mid-range family), making them popular for low-cost, low-power, deterministic control tasks. Key features of the PIC14000T-04/SS include 7KB OTP program memory, 192 bytes of RAM, 20 I/O pins, an integrated Slope A/D converter (a unique analog front-end in the PIC14xxx family), a commercial operating temperature range of 0 C to +70 C, and surface-mount SSOP-28 packaging. The architecture provides 14-bit wide instructions and supports all single-cycle instructions except program branches (two cycles), giving predictable timing for real-time control loops. The PIC14000 family is differentiated from standard mid-range PICs by its mixed-signal capabilities, including the on-chip Slope A/D converter that allows direct interfacing with resistive sensors (thermistors, RTDs, bridge sensors) without external ADC components. This makes it particularly suitable for sensor-conditioning applications where PCB real estate and BOM cost are critical. Typical applications include industrial sensor signal conditioning, battery chargers, SMPS control loops, HVAC damper/actuator control, and consumer appliance controllers. The integrated Slope A/D simplifies analog front-end design in cost-sensitive embedded products. When designing with this device, note that the OTP program memory is one-time programmable - firmware must be fully verified before production programming. The 28-SSOP package is hand-solderable with care but is best assembled by reflow; the commercial 0 C to +70 C temperature range limits the part to indoor and benign-environment applications. This page synthesizes distributor pricing, 28-SSOP drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC14000T-04I/SO - 8-bit Mixed Signal MCU 7KB OTP | Microchip
PIC14000T-04I/SO

PIC14000T-04I/SO - 8-bit Mixed Signal MCU 7KB OTP | Microchip

The Microchip Technology PIC14000T-04I/SO is an 8-bit CMOS OTP-based mixed-signal microcontroller from the PIC14 family, delivering 4 MHz performance in a 28-pin SOIC (SO) package. Built on Microchip's PIC RISC architecture with only 35 single-word instructions, the device executes instructions in 200 ns and most instructions complete in a single oscillator cycle, except program branches which take two cycles. The 'T' suffix denotes tape-and-reel packaging, while 'I' indicates the industrial temperature grade (-40C to +85C), and the '04' speed designation corresponds to the 4 MHz oscillator. Mixed-signal microcontrollers integrate analog and digital peripherals on a single die, eliminating the external ADC, DAC, op-amps, and comparator circuitry that traditional 8-bit MCUs require. The PIC14000 family belongs to Microchip's PIC14 sub-family and sits between the baseline PIC10/12/16 families and the mid-range PIC18 family in the taxonomy, specifically targeting motor control, power conversion, and analog signal conditioning where on-chip comparators, PWMs, and ADCs reduce BOM cost and PCB area. Key features include 7 KB (4K x 14) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, 20 digital I/O pins, an integrated multi-channel 8-bit ADC, operational amplifiers, comparators, and PWM modules. Supply voltage spans 4.5V to 5.5V (with some references showing 3.3V/5V operation), making the part compatible with both 3.3V and 5V system designs. The wide instruction set, RISC architecture, and integrated analog peripherals enable compact, deterministic code for closed-loop control applications. The PIC14000 architecture combines a Harvard-bus RISC core with on-chip analog blocks - including programmable gain amplifiers and comparators - tightly coupled to the digital engine. This integration allows real-time feedback control without CPU overhead from external SPI or I2C peripherals, improving control-loop latency for motor-drive and switch-mode power applications. Typical applications include switched-mode power supplies (SMPS), uninterruptible power supplies (UPS), battery chargers, motor control (BLDC and stepper), fluorescent and HID ballasts, and analog signal conditioning front-ends. The integrated analog front-end also suits industrial sensor signal chains where 8-bit resolution is acceptable. When designing with this device, allocate OTP programming time during manufacturing because OTP cannot be re-programmed in-circuit. Provide adequate decoupling (0.1 uF ceramic plus 10 uF bulk) on VDD, and route analog references (VREF+, VREF-) with ground guarding to preserve ADC accuracy. Industrial temperature parts are recommended for outdoor or factory-floor deployments. This page synthesizes distributor pricing, drop-in alternates within the PIC14 family, and practical design notes beyond what the manufacturer datasheet alone provides.

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PIC14000T-04I/SS - 8-bit 4MHz 7KB OTP MCU 28-SSOP | Microchip
PIC14000T-04I/SS

PIC14000T-04I/SS - 8-bit 4MHz 7KB OTP MCU 28-SSOP | Microchip

The Microchip Technology PIC14000T-04I/SS is an 8-bit CMOS mixed-signal microcontroller based on the PIC14 architecture, delivering 4 MHz (200 ns instruction cycle) CPU performance with 7 KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and 20 general-purpose I/O pins in a 28-pin SSOP package. The "T" suffix denotes tape-and-reel packaging, the "04" denotes the 4 MHz maximum clock, the "I" denotes the industrial temperature grade (-40C to +85C), and the "/SS" suffix denotes the 28-SSOP package. What is a PIC Mixed-Signal Microcontroller? A mixed-signal microcontroller integrates an analog front-end (typically 8- or 10-bit ADC, comparators, op-amps, voltage references, and current sources) alongside a digital CPU core on a single die. The PIC14000 was Microchip's first dedicated SMPS (switched-mode power supply) and power-conversion controller MCU, with the analog peripherals specifically designed for closed-loop digital control of buck, boost, flyback, and SEPIC converters. Key features include a 14-bit instruction word optimized for compact code density (only 35 single-word instructions to learn), all single-cycle except program branches which take two cycles, and integrated peripherals that include an 8-bit ADC, dual comparators, and PWM modules suitable for digital power conversion loops. The 28-SSOP surface-mount package has a 0.209" (5.30 mm) body width and supports industrial-grade operation across -40C to +85C. Architecturally, the PIC14000 combines a RISC-style Harvard CPU with purpose-designed SMPS peripherals, allowing firmware engineers to implement digital compensation, soft-start, and adaptive dead-time control for high-frequency switching converters. The OTP program memory is one-time programmable in volume production but is also windowed or flash-reprogrammable on related die variants, supporting iterative development. Typical applications include digitally controlled switch-mode power supplies, battery chargers, LED drivers with dimming control, DC-DC converter primary-side controllers, power-factor correction (PFC) stages, and industrial motor-control auxiliary rails. The 20 GPIO pins are sufficient for synchronous rectifier drive, fault signaling, and I2C/SPI-based telemetry to a host controller. When designing with this device, allocate the 192-byte RAM carefully; digital compensation loops, look-up tables, and ADC averaging can exhaust it quickly. Use the OTP programming window during prototyping to iterate the firmware, then move to volume OTP programming for production. Per the Microchip PIC14000 family datasheet, derating of the internal oscillator is required for SMPS loops sensitive to timing jitter. This page synthesizes distributor pricing, drop-in SSOP-28 alternatives, and SMPS-loop design considerations not found in the standalone manufacturer datasheet.

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PIC14000T-20/SO - 8-bit 20MHz OTP MCU, 7KB | Microchip
PIC14000T-20/SO

PIC14000T-20/SO - 8-bit 20MHz OTP MCU, 7KB | Microchip

The Microchip Technology PIC14000T-20/SO is an 8-bit RISC mixed-signal microcontroller from the PIC14 family, operating at 20 MHz with 7 KB (4K x 14) of One-Time Programmable (OTP) program memory and 192 bytes of RAM, housed in a 28-pin SOIC (SO) wide-body package. It executes instructions in 200 ns and is supported by a compact 35-instruction set, balancing throughput with programming simplicity. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and peripherals. Within the wider taxonomy, the PIC14000 belongs to the 8-bit MCU family -> RISC architecture -> Harvard architecture -> PIC14 series -> mixed-signal microcontroller, ultimately classified as an embedded semiconductor. Its mixed-signal heritage distinguishes it from general-purpose 8-bit MCUs because it ships with on-chip analog peripherals tailored for sensor-driven and signal-conditioning applications. Key features include 20 I/O pins, 20 MHz maximum clock speed, 4.5 V to 5.5 V single-supply operation, 7 KB OTP program memory, 192 x 8 bytes of data RAM, and integrated peripherals such as an 8-channel 8-bit ADC, comparators, and a slope ADC. The wide-body 28-SOIC package (0.295 in / 7.50 mm width) supports standard surface-mount reflow processes and is fully RoHS compliant. The architecture follows Microchip's RISC design with a 14-bit instruction word for code density. Technically, the PIC14000T-20/SO is built on CMOS technology with 200 ns instruction execution and uses OTP memory for program storage. The integrated mixed-signal peripherals - including op-amps, comparators, and timers - allow direct interface to analog sensors without extensive external analog components. The device targets cost-sensitive, mixed-signal applications where integration reduces BOM count. Typical applications include smoke detectors, security systems, sensor signal conditioning, battery chargers, motor control feedback loops, and small industrial control boards. The 20 MHz clock and on-chip analog peripherals make it well-suited for systems that must process analog signals in real time without a dedicated external ADC. When designing with this MCU, pay attention to the OTP memory constraint - once programmed the part cannot be erased, so production-grade firmware verification must be completed on a windowed (UV-erasable) or flash-based prototype before committing. Ensure that the 28-SOIC wide-body footprint matches your PCB land pattern, and that decoupling and ADC reference design follow Microchip's mixed-signal layout guidelines. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical mixed-signal design notes not found in the manufacturer datasheet alone, helping engineers select and source the part with confidence.

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PIC14000T-20/SS - 8-Bit 20MHz 7KB OTP MCU | Microchip
PIC14000T-20/SS

PIC14000T-20/SS - 8-Bit 20MHz 7KB OTP MCU | Microchip

The Microchip Technology PIC14000T-20/SS is an 8-bit PIC microcontroller built on the PIC14 architecture, featuring a 20MHz maximum clock speed, 7KB (4K x 14) of One-Time Programmable (OTP) program memory, and 192 bytes of RAM, all integrated into a 28-pin SSOP package supplied on tape and reel. Designed for mixed-signal applications, it executes instructions in 200ns (single cycle, except program branches which are two cycles), supports only 35 single-word instructions, and is manufactured in CMOS for low power consumption. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and integrated peripherals such as timers, A/D converters, and communication interfaces. The PIC14 family sits between the baseline PIC10/12 series and the mid-range PIC16 family, offering a RISC instruction set, deterministic execution timing, and OTP or flash program memory for embedded control. Microcontrollers serve as the decision-making core of virtually every embedded product, replacing discrete logic with software-defined behavior. Key features of the PIC14000T-20/SS include the 8-bit PIC RISC core, 7KB OTP program memory suitable for production-volume firmware, 192 bytes of data RAM for variable storage, a 20MHz clock providing 5 MIPS throughput, and an industrial-grade operating temperature range suitable for commercial embedded designs. The SSOP-28 package (5.30mm body width) provides a compact surface-mount footprint compatible with standard 0.65mm-pitch land patterns. From a technical depth perspective, the PIC14000 integrates mixed-signal peripherals including A/D conversion channels and analog comparators alongside the digital core, making it suitable for sensor-interface and control applications. The OTP memory allows one-time programming during manufacturing, offering lower per-unit cost than flash for high-volume production runs. Typical applications include industrial automation controllers, sensor signal conditioning, consumer electronics interfaces, motor control sub-systems, and mixed-signal embedded products. Its combination of analog and digital peripherals on one die simplifies BOM for cost-sensitive designs. When designing with the PIC14000T-20/SS, ensure the development toolchain matches the OTP variant (PIC14000 OTP parts require a compatible programmer; firmware must be finalized before programming). Decoupling capacitors of 0.1uF should be placed close to VDD/VSS pairs to maintain analog performance. This page synthesizes distributor stock, parametric specifications, drop-in replacement candidates, and practical design notes not consolidated on the manufacturer product page, providing an engineer-ready reference for sourcing and second-sourcing decisions.

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PIC14000T-20I/SO - 8-Bit Mixed Signal MCU 7KB OTP 28-SOIC | Microchip
PIC14000T-20I/SO

PIC14000T-20I/SO - 8-Bit Mixed Signal MCU 7KB OTP 28-SOIC | Microchip

The Microchip Technology PIC14000T-20I/SO is an 8-bit CMOS OTP-based mixed-signal microcontroller in the PIC® 14 family, packaged in a 28-pin SOIC (SO) with industrial temperature grade. It executes instructions in 200 ns at a 20 MHz clock input, integrates 7 KB of OTP program memory organized as 4K x 14 bits, and includes 192 x 8 bytes of RAM for data and stack operations. The device is built around Microchip's PIC RISC architecture and offers only 35 single-word instructions, with all instructions executing in a single cycle except program branches which require two cycles. A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC processor optimized for embedded control, widely deployed in automotive, industrial, and consumer applications. The PIC14000 sits within the broader hierarchy of microcontrollers -> embedded processors -> integrated circuits. Its mixed-signal nature positions it specifically within the analog/mixed-signal MCU subcategory, distinguished by integrated peripherals such as comparators, A/D converter channels, and PWM modules. Key features of this variant include a 20 MHz maximum operating frequency, an industrial temperature grade (-40C to +85C) indicated by the 'I' suffix, a tape-and-reel packaging code (T), and surface-mount SO-28 gull-wing leads. The instruction set simplifies code development and reduces learning curve for engineers familiar with PIC microcontrollers, while the OTP memory enables cost-effective production for high-volume applications. Integrated peripherals include multiple analog comparators, capture/compare/PWM modules, and a multi-channel ADC, supporting sensor interface and motor control tasks. The PIC14000 architecture combines a high-performance RISC CPU with mixed-signal peripherals on a single die, eliminating external A/D converters and op-amps in many signal-conditioning applications. This integration reduces BOM count, board area, and system cost. The Harvard architecture separates program and data buses, enabling simultaneous fetch and execution and contributing to the deterministic single-cycle instruction execution that characterizes PIC devices. Typical applications include industrial process control, sensor signal conditioning, smart battery chargers, motor control loops, and analog front-end interfaces. Its mixed-signal capability is particularly suited to applications that combine digital logic with analog sensor inputs and closed-loop feedback. Designers often pair the PIC14000 with precision op-amps, voltage references, and isolated communication transceivers to complete mixed-signal subsystems. When designing with the PIC14000T-20I/SO, consider that OTP memory cannot be reprogrammed in-circuit - code must be burned before final assembly, which influences production flow and firmware revision strategy. Adequate decoupling capacitors (typically 100 nF ceramic plus bulk) near VDD/AVDD and VSS/AVSS pins are essential for ADC accuracy and noise immunity. This page synthesizes distributor pricing, OTP-vs-Flash alternatives within the PIC14 family, and practical design notes that go beyond the manufacturer datasheet to support sourcing and design decisions.

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PIC14000T-20I/SS - 7KB OTP 8-bit Mixed-Signal MCU | Microchip
PIC14000T-20I/SS

PIC14000T-20I/SS - 7KB OTP 8-bit Mixed-Signal MCU | Microchip

The Microchip Technology PIC14000T-20I/SS is a 20 MHz, 8-bit CMOS mixed-signal OTP microcontroller in the PIC® 14 family, packaged in a 28-pin SSOP (0.209 in / 5.30 mm width). It integrates 7 KB of OTP program memory (4K x 14), 192 bytes of SRAM, 20 digital I/O lines, and an on-chip 8-channel 8-bit ADC plus two on-chip comparators — making it one of the few PIC mid-range parts designed for mixed-signal front-end tasks. A PIC microcontroller is a RISC-based 8-bit/16-bit/32-bit MCU built around Microchip's Harvard architecture, used widely in embedded control. The PIC14000 belongs to the mid-range PIC14 sub-family, sitting between the baseline PIC10/12/16 and the enhanced PIC18 cores, and was specifically designed as a mixed-signal controller with built-in analog peripherals for sensor signal chains. Within the power management and embedded hierarchy it sits under: microcontroller -> embedded controller -> mixed-signal MCU -> RISC MCU -> semiconductor IC. Key features of the PIC14000T-20I/SS include a 200 ns single-cycle instruction execution (4 MHz oscillator / 20 MHz ÷ 4 internal), 35 single-word instructions, 8 MHz internal ADC conversion rate, 8-channel 8-bit A/D converter, two analog comparators with programmable reference, internal bandgap voltage reference, on-chip EPROM/OTP program memory, and a wide 2.5 V to 5.5 V operating voltage range. It supports in-circuit serial programming (ICSP) and is offered in industrial temperature grade (-40 °C to +85 °C). The SSOP-28 footprint is pin-compatible with the rest of the PIC14000 family. Architecturally, the PIC14000 uses a 14-bit instruction word with an 8-bit data path, a 2-stage pipeline, and dedicated peripheral modules mapped to the data-memory bus. The 8-bit successive-approximation ADC is paired with two comparators, allowing a designer to perform amplification, thresholding, and digital conversion on-chip — reducing external analog components. The OTP-based program memory supports one-time field programming, with a UV-erasable windowed variant (PIC14000) for development. Typical applications include battery chargers, switched-mode power supply (SMPS) secondary-side control, fan and pump controllers, sensor conditioning front-ends, appliance control, automotive interior lighting, and industrial process loops. The combination of ADC, comparators, and PWM output makes it a single-chip solution for closed-loop analog control. When designing with this part, plan OTP programming early because OTP cannot be re-programmed. Use the windowed PIC14000 (non-T) for prototyping and switch to PIC14000T-20I/SS for production. Decouple VDD with a 0.1 µF ceramic capacitor placed within 5 mm of the pin to keep ADC noise low. This page consolidates distributor pricing, pin-compatible alternatives, and practical design notes that the manufacturer datasheet alone does not provide.

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PIC16C432-I/P - 8-Bit 20MHz OTP MCU with LIN Transceiver | Microchip
PIC16C432-I/P

PIC16C432-I/P - 8-Bit 20MHz OTP MCU with LIN Transceiver | Microchip

The Microchip Technology PIC16C432-I/P is an 8-bit CMOS microcontroller operating at 20 MHz, featuring 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory and 128 bytes of RAM, housed in a 20-pin PDIP package. It is part of the PIC® 16C family of fully-static microcontrollers with an integrated LIN (Local Interconnect Network) transceiver, originally designed for automotive body electronics networking. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory (ROM/OTP/Flash), working RAM, I/O peripherals, and timers on one silicon die. PIC16C-series MCUs use Microchip's RISC Harvard-architecture core with a small instruction set (35 instructions in this case), enabling compact code and predictable execution timing. The hierarchy is: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16C432 sits in the mid-range PIC® family (PIC16C5x is base; PIC16C6x/7x/8x/9x are mid-range). Key features include 12 I/O pins, one 8-bit timer/counter with an 8-bit programmable prescaler, two analog comparators with a programmable on-chip voltage reference module, and an integrated LIN transceiver for single-wire automotive networking. The 200 ns instruction cycle at 20 MHz oscillator yields a 5 MIPS peak throughput. Code compression of approximately 2:1 over competing 8-bit MCUs reduces program-memory pressure for the 2K-word OTP array. Typical applications include automotive body-control modules (door locks, window lifters, mirror controllers, seat adjusters), LIN slave nodes, HVAC panel controls, lighting controllers, low-end instrument-cluster sub-modules, and any 12 V automotive application that previously required a discrete LIN transceiver plus MCU. When designing with PIC16C432-I/P, note that the 'C' (CMOS/OTP) variants are intended for prototype and low-volume production; for high-volume programs migrate to PIC16F432-I/P (Flash, reprogrammable). Ensure the LIN bus master provides the dominant-recessive arbitration; this part is intended as a LIN slave responder. The 20-pin PDIP footprint eases hand-soldering and breadboarding. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Pricing reflects market conditions as of 2026-09-16.

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PIC16C432T-I/SS - 8-Bit OTP MCU + LIN Transceiver | 20-SSOP
PIC16C432T-I/SS

PIC16C432T-I/SS - 8-Bit OTP MCU + LIN Transceiver | 20-SSOP

The Microchip Technology PIC16C432T-I/SS is an 8-bit PIC microcontroller with an integrated LIN bus transceiver, packaged in a 20-pin SSOP. It delivers 20 MHz CPU performance with 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and 12 digital I/O pins. The device operates from 3.0 V to 5.5 V and is built on a fully-static CMOS process that supports a 200 ns single-cycle instruction execution. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and configurable peripheral blocks. Within the embedded hierarchy, the PIC16C432 sits in the 8-bit mid-range PIC family, above 6-/8-pin baseline PIC10/PIC12 devices but below the 16-bit dsPIC/PIC24 and 32-bit PIC32 families. The integrated LIN (Local Interconnect Network) transceiver places this MCU in the automotive body-electronics tier, where it bridges low-speed in-vehicle networks without requiring an external transceiver IC. Key features of the PIC16C432 include an integrated LIN transceiver compliant with LIN 1.2/1.3 physical layer requirements, a 35-instruction RISC core with single-cycle execution (200 ns at 20 MHz, branches two-cycle), a programmable watchdog timer, a 10-bit analog-to-digital converter, and two analog comparators. It also offers an internal 4 MHz RC oscillator and an external oscillator option for greater timing accuracy. Architecturally, the device combines a Harvard-style RISC engine, an OTP program store, and an on-die LIN physical layer, reducing BOM count versus discrete MCU-plus-transceiver designs. The CMOS process yields low quiescent current suitable for battery-connected automotive nodes. The 20-SSOP footprint measures 5.30 mm wide (0.209 inch) and 7.20 mm long, easing integration into space-constrained body modules. Typical applications include automotive LIN slaves (door modules, seat controllers, mirror switches, HVAC dampers), body-electronics sensor nodes, industrial keypad/wheel interfaces, and low-cost appliance control. The on-chip LIN transceiver removes the need for an external TJA1020 or MC33660, lowering BOM cost and PCB area. When designing with this part, note that OTP memory cannot be reprogrammed in-circuit; for prototypes requiring firmware iteration, consider the PIC16F432 (Flash) sibling or windowed CERDIP PIC16C432 for UV erasure. The industrial (-40 C to +85 C) temperature grade suits most passenger-compartment body electronics but not under-hood applications.

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PIC16C433T-I/SO - 8-bit PIC MCU 10MHz 3.5KB OTP 18-SOIC | Microchip
PIC16C433T-I/SO

PIC16C433T-I/SO - 8-bit PIC MCU 10MHz 3.5KB OTP 18-SOIC | Microchip

The Microchip PIC16C433T-I/SO is an 8-bit PIC16 family microcontroller built on Microchip's OTP (One-Time-Programmable) EPROM process, packaged in a 18-pin SOIC (SO-18) and shipping on tape-and-reel. It integrates 3.5 KB of program memory (2K x 14 words) and 128 bytes of data RAM, executes instructions at up to 10 MHz, and supports the standard PIC mid-range instruction set. The /SO package is the wide-body 300-mil SOIC variant (7.50 mm body width). A PIC16 microcontroller is a Harvard-architecture RISC device: separate program and data buses, a small fixed instruction set, and most instructions executing in a single oscillator cycle. PIC16C-series parts use EPROM/OTP program memory, meaning the device can be programmed once at production time and the code is permanently retained, which suits low-cost, high-volume consumer and appliance designs where flash re-programmability is not required. The C-class PIC16 is positioned below the F-class (Flash) siblings in the same family tree (PIC16 -> PIC mid-range -> 8-bit MCU -> microcontroller). Key features include 10 MHz maximum operating frequency, 128 bytes of RAM, 5 I/O pins (PIC16C433 exposes a 6-pin I/O set per the family, but in this /SO variant 5 are bonded out), internal oscillator support, 5V typical operation, and an instruction set fully compatible with the broader PIC16 mid-range family. The OTP EPROM die is mature and well-characterized, making the part suitable for legacy industrial controllers and cost-down retrofits of older designs. PIC16C433 belongs to the PIC16C4x sub-family of mid-range microcontrollers. Architecturally it shares the same core as PIC16C54/55/56/57/58 devices, with extended program memory addressing to reach 2K x 14 of code space. The on-chip peripherals are intentionally minimal - this is a low-I/O-count, low-cost device aimed at simple digital control tasks. Power consumption is typical for the OTP EPROM process node. Typical applications include simple timer/replacement logic, low-cost consumer appliance controls, toys and educational boards, sensor-signal processing front-ends, motor-control signal generators, and any application where a one-time-programmed 8-bit MCU with a small code footprint is acceptable. The 18-SOIC form factor makes it well-suited for through-hole-style PCBs converted to surface-mount, or for retrofit boards that require the SO-18 footprint. When designing with this device, note that OTP means field upgrades are impossible - firmware must be finalized before programming. Always provide adequate Vdd decoupling (100 nF + bulk) close to the IC, and respect the oscillator start-up time when MCLR reset is released. This page synthesizes distributor pricing, drop-in alternative pinouts, and practical design notes not present in the standalone manufacturer datasheet, including cross-references to the /SO and /P variants.

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PIC16C505-04/P - 8-Bit 4MHz OTP MCU, 1.5KB, 12 I/O | Microchip
PIC16C505-04/P

PIC16C505-04/P - 8-Bit 4MHz OTP MCU, 1.5KB, 12 I/O | Microchip

The Microchip Technology PIC16C505-04/P is an 8-bit CMOS OTP microcontroller delivering 4 MIPS performance (200 ns instruction cycle) in a 14-pin PDIP through-hole package. It integrates 1.5 KB of EPROM program memory (1K x 12 wide), 72 bytes of RAM, and 12 digital I/O pins. A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory, data RAM, and programmable I/O peripherals. Within the broader taxonomy, the PIC16C505 sits in the 8-bit RISC MCU class, descended from the original PIC® (Peripheral Interface Controller) architecture introduced by General Instruments and commercialized by Microchip. It belongs to the enhanced PIC16 mid-range family, which uses a Harvard architecture with separate program and data buses and a small RISC instruction set optimized for deterministic real-time control. PIC16C-series parts are OTP (One-Time-Programmable) EPROM-based, distinguishing them from the Flash-based PIC16F series. The device features a 12-bit instruction word, 33 single-word/single-cycle instructions, a hardware 8-bit timer/counter (TMR0) with an 8-bit prescaler, watchdog timer with its own on-chip RC oscillator, programmable code protection, power-on reset, power-saving SLEEP mode, and a 4 MHz internal/external clock input option. The '04' speed grade specifies a 4 MHz maximum oscillator input. Architecturally, the PIC16C505 uses an 8-level deep hardware stack, two I/O ports (PORTB 8 bits and PORTC limited), and an internal RC oscillator that reduces external component count. The 14-pin PDIP package provides 12 usable I/O pins after dedicating one pin to VDD, one to VSS, and one to MCLR/VPP. Typical applications include low-cost consumer appliance control, sensor signal conditioning, LED driving and lighting controllers, battery chargers, small home appliances, automotive body electronics subsystems, and replacement of discrete logic ICs in legacy designs. Its small footprint, low price, and ease of programming (33-instruction set) make it a frequent choice for simple state-machine and timing-control tasks. Designers should note that the OTP variant cannot be reprogrammed in-circuit; engineering samples should use the PIC16F505 flash equivalent for iterative development. Code-protect bits should be verified before final production programming to prevent unauthorized memory reads. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design guidance drawn from the PIC16C505 datasheet and reference manuals.

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PIC16C505-04/SL - 8-Bit 4MHz OTP MCU 1.5KB | Microchip
PIC16C505-04/SL

PIC16C505-04/SL - 8-Bit 4MHz OTP MCU 1.5KB | Microchip

The Microchip Technology PIC16C505-04/SL is an 8-bit CMOS OTP (One-Time Programmable) microcontroller from the PIC16C5x family, delivering 4 MIPS performance through a 4 MHz maximum clock and 200 ns instruction cycle in a 14-pin SOIC package. The device integrates 1.5 KB (1K x 12) of OTP program memory and 72 bytes of data RAM, providing 12 digital I/O pins suitable for compact embedded control applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals on one IC. The PIC16C5x family belongs to the PIC16 mid-range 8-bit microcontroller architecture, sitting hierarchically under the broader PIC microcontroller family, which itself falls under Microchip's embedded controller and 8-bit MCU product lines. 8-bit OTP microcontrollers like the PIC16C505 are commonly used in cost-sensitive, low-volume, or fixed-function applications where program memory is programmed once at production and the code never needs updating. Key features include 33 single-word single-cycle instructions enabling compact code density (typically 2:1 over competing 8-bit MCUs), a 5-channel 8-bit A/D converter absent on this variant (digital-only I/O), and an on-chip watchdog timer with its own dedicated RC oscillator for reliable operation independent of the system clock. The PIC16C505 includes In-Circuit Serial Programming (ICSP), Power-on Reset (POR), Device Reset Timer (DRT), and a programmable code-protection mechanism for IP security. Its RISC architecture and Harvard bus design separate program and data memory paths, allowing instruction fetch and operand access to occur in the same cycle. Typical applications include low-cost consumer appliances, remote controls, sensor interface front-ends, LED driver controllers, battery-powered toys, and simple industrial timer/counter modules. The wide 2.5V to 5.5V operating range supports both 3.3V and 5V system designs, and 12 I/O pins provide enough headroom for keypad scanning, display multiplexing, and serial-bit-banged communication. When designing with this device, observe that the OTP memory cannot be re-programmed - choose this part for production-fixed code, or evaluate the flash-based PIC16F505 for development/field-upgradable designs. The PIC16C505 is a member of the legacy PIC16C5x family; for new designs, Microchip generally recommends the PIC16F505 (flash) or PIC10/12F successor families.

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PIC16C505-04E/SL - 8-Bit 4MHz OTP MCU, 1.5KB | Microchip
PIC16C505-04E/SL

PIC16C505-04E/SL - 8-Bit 4MHz OTP MCU, 1.5KB | Microchip

The Microchip Technology PIC16C505-04E/SL is a 14-pin 8-bit CMOS microcontroller based on the PIC16C5x architecture with 1.5KB (1K x 12) of One-Time-Programmable (OTP) program memory, 72 bytes of RAM, and 12 digital I/O pins. The device executes instructions in a 200 ns instruction cycle at 4 MHz oscillator input, drawing typical operating current in the low milliamp range from a 2.5 V to 5.5 V supply. It is housed in a 14-pin SOIC package (SL = SOIC-150, 3.90 mm body width) and is specified for the extended industrial temperature range of -40C to +125C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (ROM/Flash/OTP), working RAM, and peripheral I/O into one package. Within the broader semiconductor taxonomy, an MCU belongs to the logic IC / microcontroller category, which sits below microprocessors and above discrete digital logic in capability. The PIC16C505 specifically belongs to the PIC16C5x baseline OTP family - a cost-optimized lineage used where low pin count, deterministic instruction timing, and OTP-based code storage are acceptable. Key features include 33 single-word instructions, a hardware RESET input, a watchdog timer, an 8-bit real-time clock/counter with 8-bit prescaler, and four interrupt sources. The OTP program memory enables low-cost prototyping and low-to-mid volume production runs, while the CMOS process delivers low quiescent current typical of battery-powered applications. The 14-pin SOIC footprint keeps board area minimal while leaving 12 lines free for digital I/O after power, ground, and RESET are allocated. Architecturally, the PIC16C505 uses a Harvard-style RISC core with a separate 12-bit instruction word and 8-bit data path. The 4 MHz oscillator produces a 1 MHz instruction rate (4:1 internal divider) yielding a 1 microsecond instruction cycle, suitable for tight control loops and deterministic timing. The integrated watchdog timer and power-on reset reduce external component count. Typical applications include low-cost appliance control, sensor signal conditioning front ends, LED lighting controllers, battery chargers, and simple user-interface boards. The extended temperature grade makes it suitable for automotive under-hood subsystems and industrial machine controllers where commercial-grade parts would otherwise be inadequate. When designing with this part, allocate VDD/VSS decoupling with a 100 nF ceramic capacitor placed within 5 mm of the device, and provide an RC delay or proper MCLR pull-up to ensure clean POR behavior. OTP memory cannot be erased, so plan for code-stable volume runs or use the PIC16F505 flash variant for development and field updates. This page consolidates distributor pricing, drop-in alternatives, application examples, and design notes not found in the standalone manufacturer datasheet, enabling engineers to evaluate the PIC16C505-04E/SL for new designs and legacy board replacements.

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PIC16C505-04I/SL - 8-Bit 4MHz OTP MCU, 1.5KB, 12 I/O | Microchip
PIC16C505-04I/SL

PIC16C505-04I/SL - 8-Bit 4MHz OTP MCU, 1.5KB, 12 I/O | Microchip

The Microchip Technology PIC16C505-04I/SL is a low-cost, high-performance 8-bit fully-static EPROM/ROM-based CMOS microcontroller delivering 4 MHz (200 ns instruction cycle) performance with 1.5 KB (1K x 12) of One-Time-Programmable (OTP) program memory and 72 bytes of RAM, housed in a 14-pin SOIC (SL) package. It features 12 digital I/O pins, an 8-bit timer/counter, and operates across the industrial temperature range of -40C to +85C. What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a class of MCU whose program memory is implemented using EPROM cells that can be written exactly once during production or field programming, then cannot be erased. OTP MCUs sit in the hierarchy: microcontroller -> embedded processor -> semiconductor IC. They offer lower per-unit cost than flash-based MCUs and are commonly used in high-volume, code-stable consumer and industrial products where in-field firmware updates are not required. Key features include the PIC16C5x baseline RISC architecture with only 33 single-word/single-cycle instructions, providing typical 2:1 code compression over competing 8-bit MCUs. The device supports 8-bit-wide data paths, hardware stack, and direct/indirect addressing modes. An internal RC oscillator option reduces BOM cost, while the Watchdog Timer (WDT) and Power-on Reset (POR) enhance field reliability. The industrial-grade (-40C to +85C) operating range supports harsh-environment deployments. The PIC16C505-04I/SL employs a Harvard-architecture RISC core that executes one instruction per clock cycle (except branches), achieving 200 ns instruction time at 4 MHz. The 12-bit instruction word is symmetric, simplifying code generation. Internal peripherals are mapped to a compact register file, and the device supports in-circuit serial programming (ICSP) via RB6/RB7 pins for production-line code loading. Typical applications include low-cost consumer appliances, small industrial control modules, sensor signal conditioning front-ends, simple LED driving controllers, remote control transmitters, and replacement of discrete logic in cost-sensitive embedded designs. The 14-pin SOIC footprint is widely accepted in through-hole-style surface-mount assembly, simplifying PCB layout for legacy upgrades. When designing with the PIC16C505-04I/SL, remember that OTP memory cannot be re-programmed; prototype using the PIC16F505 (Flash-based) variant and migrate to the PIC16C505 for production cost savings. Ensure RB6/RB7 are accessible for in-circuit serial programming during manufacturing, and budget decoupling capacitors per the datasheet typical application circuit. This page synthesizes distributor pricing, drop-in compatible alternatives from the same PIC16C5x family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C505-20E/P - 8-Bit 20MHz 1.5KB OTP MCU | 14-PDIP | Microchip
PIC16C505-20E/P

PIC16C505-20E/P - 8-Bit 20MHz 1.5KB OTP MCU | 14-PDIP | Microchip

The Microchip Technology PIC16C505-20E/P is a 14-pin, 8-bit CMOS OTP microcontroller from the PIC16C5X family running at 20 MHz instruction execution (200 ns per instruction), with 1.5 KB of one-time-programmable program memory (1K x 12) and 72 bytes of general-purpose RAM. Packaged in a 14-pin PDIP (0.300"/7.62 mm) for through-hole assembly, it operates over the extended -40C to +125C automotive temperature range, indicated by the -E suffix in the part number. What is a PIC16C5X microcontroller? It is Microchip's original baseline PIC architecture using a 12-bit instruction word and a RISC instruction set of only 33 single-word instructions, packaged in 14 to 28 pins for ultra-low-cost embedded control. The 'C' suffix denotes CMOS EPROM/OTP program memory; later 'F' variants use flash memory. Within the broader taxonomy, the PIC16C505 sits at: PIC16C505 -> PIC16C5X family -> PIC16 -> 8-bit PIC MCU -> Microcontroller -> Integrated Circuit. Key features include 200 ns instruction execution, 2:1 code compression versus typical 8-bit competitors, a watchdog timer with on-chip RC oscillator, power-on reset, power-saving SLEEP mode, and a wide operating voltage range from 2.5V to 5.5V. The 14-pin DIP package exposes 12 I/O pins, a MCLR reset pin, and two power pins, supporting through-hole prototyping and legacy industrial designs. Compared to PIC16F5X flash variants, the OTP 'C' version offers lower unit cost in volume and is well-suited to mature production programs. The PIC16C505 uses a Harvard architecture with separate program and data buses, allowing an instruction fetch to overlap with data access. Internal peripherals include a programmable 8-bit prescaler feeding the watchdog timer, an 8-bit RTCC timer/counter, and a software-configurable oscillator that supports external RC, external crystal, and internal RC modes. With 1.5 KB of program memory holding approximately 1024 instructions, firmware development uses the standard PIC16C5X assembly toolchain or Hi-Tech C compiler, with debug support through Microchip's MPLAB ICE and ICD tools. Typical applications include appliance control, automotive body modules, sensor signal conditioning, remote-control transmitters, security keypads, and any cost-sensitive embedded product that benefits from a small-pin-count OTP MCU. The extended -40C to +125C temperature grade supports under-hood automotive and outdoor industrial environments. When designing with the PIC16C505, plan for OTP programming: code is finalized before production programming and cannot be updated. For prototype work or field-upgradable firmware, consider the flash-based PIC16F505 in the same 14-pin DIP footprint, which is pin-to-pin compatible. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.

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