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PIC16C72-20E/SS - 8-Bit OTP MCU, 20MHz, 3.5KB | Microchip
PIC16C72-20E/SS

PIC16C72-20E/SS - 8-Bit OTP MCU, 20MHz, 3.5KB | Microchip

The Microchip Technology PIC16C72-20E/SS is an 8-bit CMOS microcontroller with a 20 MHz clock input, 3.5KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and a 5-channel 8-bit analog-to-digital converter, housed in a 28-pin SSOP package. Operating from 4.0V to 5.5V across the extended -40C to +125C industrial temperature range, it executes 35 single-word RISC instructions with a 200 ns instruction cycle at full speed. An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, program memory, data RAM, and peripherals such as timers, communication interfaces, and ADCs. PIC microcontrollers belong to the broader category of microcontrollers -> embedded processors -> semiconductors, and within Microchip's portfolio they sit in the mid-range PIC16 family. The 'C' suffix denotes the OTP (One-Time Programmable) EPROM-based process, which is cost-optimized for production runs where field reprogramming is not required. Key features include a high-performance RISC architecture with only 35 single-word instructions to learn, a Timer0 8-bit timer/counter with 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator, brown-out detection circuitry for Brown-out Reset (BOR), power-on reset, and 13 I/O pins. The ADC block supports up to 5 channels of 8-bit resolution, allowing direct interfacing with analog sensors. The device is fabricated on a CMOS process and uses a Harvard architecture with separate program and data buses, enabling single-cycle instruction execution except for program branches which take two cycles. The PIC16C72-20E/SS suffix codes indicate 20 MHz maximum clock, the 'E' for extended temperature, and '/SS' for the 28-pin SSOP package. Compared to the PIC16C72A or PIC16F72 successors, this part lacks flash memory and ICD debugging but offers lower unit cost for high-volume mature designs. Typical applications include appliance control, industrial sensor interfaces, automotive body electronics (non-safety), consumer white goods, and embedded motor control. Its small SSOP footprint and integrated ADC make it well suited for space-constrained analog monitoring boards. When designing with this device, note that OTP memory cannot be re-programmed; for prototype or low-volume development, choose the flash-based PIC16F72 equivalent to reuse code. Brown-out reset must be properly configured to prevent code corruption during supply droops. This page synthesizes distributor pricing, drop-in alternatives within the SSOP-28 footprint, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and source a drop-in compatible replacement for legacy designs.

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PIC16C72-20I/SP - 8-Bit 20MHz OTP MCU, 28-SPDIP | Microchip
PIC16C72-20I/SP

PIC16C72-20I/SP - 8-Bit 20MHz OTP MCU, 28-SPDIP | Microchip

The Microchip Technology PIC16C72-20I/SP is an 8-bit CMOS microcontroller from the PIC16C7X mid-range family, featuring a 20 MHz maximum clock speed, 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, and 128 bytes of RAM, all housed in a 28-pin Skinny Plastic DIP (SPDIP) package. This industrial-temperature-grade device integrates a 5-channel 8-bit analog-to-digital converter (ADC), a USART module, a Capture/Compare/PWM (CCP) module, and 22 digital I/O pins organized across ports A, B, and C. The "-20" suffix denotes a 20 MHz oscillator rating, while the "I" indicates the industrial -40C to +85C operating range and "/SP" identifies the SPDIP-28 package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripheral interfaces on one die. The PIC16C7X family specifically targets mid-range applications requiring on-chip analog conversion and serial communication. Microcontrollers sit within the broader taxonomy of microprocessors -> embedded processors -> microcontrollers -> 8-bit MCUs, and are foundational building blocks of embedded systems. Key differentiating features include the integrated 8-bit ADC (eliminating external converter cost), hardware USART for asynchronous serial links, brown-out reset (BOR) for reliable power-up, and a watchdog timer for fault recovery. The 128-byte RAM and 3.5 KB OTP support moderate-complexity control loops, sensor interfaces, and user-interface firmware. Architecturally, the PIC16C72 uses a Harvard RISC core with a 14-bit instruction word, allowing most instructions to execute in a single 200 ns instruction cycle at 20 MHz. Its five ADC channels share a single sample-and-hold, with conversion completed via successive approximation. The 22 I/O pins each source/sink up to 25 mA, enabling direct LED drive without buffering. Typical applications include industrial sensor conditioning with on-chip ADC, motor control with CCP/PWM, HVAC thermostats, appliance control boards, and simple serial-linked sensor nodes. The industrial temperature range supports factory-floor deployment where commercial-grade parts would fail. Design tip: the OTP memory requires a device programmer to write firmware before PCB assembly; for prototype or low-volume production, choose the flash-based PIC16F72 in the same 28-SPDIP footprint as a development path that can later migrate to the OTP PIC16C72 for cost-optimized production. This page synthesizes distributor pricing, drop-in pin-compatible alternatives including same-family and cross-family Microchip variants, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single reference for sourcing and substitution decisions.

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PIC16C72-20I/SS - 8-Bit 20MHz MCU 3.5KB OTP 28-SSOP | Microchip
PIC16C72-20I/SS

PIC16C72-20I/SS - 8-Bit 20MHz MCU 3.5KB OTP 28-SSOP | Microchip

The Microchip Technology PIC16C72-20I/SS is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family, featuring a 20MHz maximum clock, 3.5KB (2K x 14) of One-Time Programmable (OTP) program memory, and 128 bytes of RAM, all housed in a 28-pin SSOP surface-mount package with industrial temperature grade (-40C to +85C). It integrates a 5-channel 8-bit analog-to-digital converter, a USART, an SSP, and 22 I/O pins for mixed-signal embedded designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and peripheral interfaces (ADC, timers, communication ports) into one package. Microcontrollers are the heart of embedded systems, sitting below microprocessors in the system hierarchy: SoC -> microcontroller -> microprocessor. The PIC16C7X family in particular targets low-cost, high-performance, fully-static 8-bit designs with RISC-like instruction sets. Key differentiating features of the PIC16C72-20I/SS include only 35 single-word instructions (all single-cycle except program branches at two cycles), an 8-bit timer/counter with 8-bit prescaler, brown-out detection (BOR) for safe system reset, and 200 ns instruction cycle at 20MHz input. The OTP program memory allows one-time factory or in-circuit programming at low cost. Architecturally the PIC16C72 uses a Harvard RISC core with separate program and data buses, allowing instruction fetch and execution to overlap. The 8-level deep hardware stack supports subroutine nesting. Power consumption is controlled via SLEEP mode and the on-chip watchdog timer with its own on-chip RC oscillator for reliable operation independent of the system clock. Typical applications include motor control (small BLDC and stepper drives), industrial instrumentation, sensor signal conditioning, appliance control boards, and battery-powered measurement devices. The integrated ADC and USART simplify designs that need analog sensing and serial communication without external components. A key design consideration is OTP memory limitation - code cannot be re-programmed, so PIC16C72 is best for mature, high-volume production where field firmware updates are not required. For in-development or field-upgradable designs, the PIC16F72 or PIC16C72A Flash/EPROM variants are recommended by Microchip. This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, parametric comparisons, and practical design notes not found in the Microchip datasheet alone.

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PIC16C72/JW - 8-Bit 20MHz EPROM MCU, 3.5KB, 28-CDIP Window | Microchip
PIC16C72/JW

PIC16C72/JW - 8-Bit 20MHz EPROM MCU, 3.5KB, 28-CDIP Window | Microchip

The Microchip PIC16C72/JW is an 8-bit RISC microcontroller from the PIC® 16C family, built on CMOS technology with a 20 MHz maximum clock speed. It integrates 3.5 KB (2K x 14) of UV-erasable EPROM program memory, 128 bytes of RAM, and a 5-channel 8-bit analog-to-digital converter (ADC) in a 28-pin ceramic DIP (CDIP) windowed package. The /JW suffix denotes the UV-erasable windowed ceramic DIP package, which allows repeated erasure and reprogramming using a UV eraser - ideal for development, prototyping, and engineering samples rather than high-volume production. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (ROM/RAM), and peripherals such as ADC, timers, and I/O. Within the embedded hierarchy, the PIC16C72 belongs to the 8-bit microcontrollers family, which sits below 16-bit and 32-bit MCUs in processing capability but excels in deterministic real-time control and low system cost. The PIC16C series uses a Harvard RISC architecture with a 14-bit instruction word optimized for compiled C and assembly code efficiency. Key specifications include 13 digital I/O pins, three timers (Timer0 8-bit with 8-bit prescaler, Timer1 16-bit, Timer2 8-bit), a USART serial port, an I2C/SPI synchronous serial port, and brown-out reset (BOR) circuitry. The device operates from 4.0 V to 5.5 V across a 0°C to 70°C commercial temperature range, with a maximum power dissipation of 1000 mW. Architecturally, the PIC16C72 uses a RISC core with only 35 single-word instructions, a hardware stack, and interrupt handling for the ADC, USART, timers, and external interrupts. The integrated 8-bit ADC supports up to 5 analog input channels with configurable reference voltages, making the part well suited to mixed-signal embedded designs that combine analog sensing with digital control logic. Typical applications include industrial process control, consumer appliance control, HVAC sensor interfaces, motor drive supervisory logic, security and alarm panels, and instrumentation front-ends. The UV-erasable windowed package also makes PIC16C72/JW a favored development part for code iteration on the bench before committing to OTP (-04/-20) or Flash (PIC16F72) production versions. When designing in this part, note that Microchip recommends PIC16C72A or PIC16F72 as the active production migration path for new designs. For production runs, choose PIC16C72-04/P (OTP PDIP) or PIC16F72-I/SP) (Flash). The JW windowed variant is reserved for prototyping because windowed ceramic packages are not designed for high-volume assembly. This page synthesizes distributor pricing, drop-in replacement alternatives, and migration recommendations not found in the manufacturer datasheet alone - including the explicit Microchip recommendation to migrate to PIC16C72A or PIC16F72.

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PIC16C72A-04/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
PIC16C72A-04/SO

PIC16C72A-04/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C72A-04/SO is an 8-bit CMOS RISC microcontroller (MCU) featuring 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and a maximum clock speed of 4 MHz, housed in a 28-pin SOIC (SO) package. It integrates 22 digital I/O lines, a 5-channel 8-bit Analog-to-Digital Converter (ADC), two 8-bit timers plus a 16-bit timer/counter with capture/compare/PWM, and a Synchronous Serial Port (SSP) configurable as either 3-wire SPI or 2-wire I2C bus. The part operates from 2.5V to 5.5V across the commercial 0C to +70C range and consumes typical operating current below 5 mA at 5V/4 MHz. A microcontroller is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces into one IC. Within the broader taxonomy, the PIC16C72A belongs to the 8-bit microcontroller class, which sits beneath 16-bit and 32-bit MCUs in the embedded semiconductor hierarchy and is optimized for cost-sensitive, deterministic control tasks rather than high-throughput computation. Key differentiating features include the Harvard RISC architecture (35 single-word instructions, single-cycle execution except for program branches), Brown-out Reset (BOR) circuitry for reliable power-up, a Watchdog Timer (WDT) with on-chip RC oscillator, and an In-Circuit Serial Programming (ICSP) interface via RB6/RB7. These features minimize external component count for embedded designers. Technically, the PIC16C72A uses a 14-bit instruction word, an 8-bit data path, and a 13-bit Program Counter that can address 8K x 14 of program memory (of which 2K x 14 is implemented here). The ADC employs successive approximation with a sample-and-hold, selectable reference sources, and analog input multiplexing across 5 channels. Power-Saving SLEEP mode reduces quiescent current to the microampere range for battery-friendly designs. Typical applications include appliance control panels, automotive body electronics, industrial sensor interfaces, low-end consumer devices, and battery-powered instrument clusters where OTP memory cost advantage and the small 28-SOIC footprint outweigh the need for in-system reprogrammability. Designers should plan around OTP-programmed firmware: code must be fully validated before final programming because OTP cannot be erased. For in-field firmware updates, a Flash-based sibling such as PIC16F72 is recommended. This page synthesizes drop-in 28-SOIC alternatives within the PIC16C72A family, verified Octopart/DigiKey stock signals, and practical design notes drawn from Microchip's PICmicro mid-range reference manual - data not consolidated on any single manufacturer or distributor page.

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PIC16C72A-04E/SO - 8-bit MCU, 4MHz, 3.5KB OTP, SOIC-28 | Microchip
PIC16C72A-04E/SO

PIC16C72A-04E/SO - 8-bit MCU, 4MHz, 3.5KB OTP, SOIC-28 | Microchip

The Microchip Technology PIC16C72A-04E/SO is a high-performance 8-bit CMOS microcontroller built on Microchip's PIC16C mid-range RISC architecture, delivering 4 MIPS of throughput at 4 MHz, packaged in a 28-pin SOIC wide-body (SO) format. Key headline parameters are 3.5 KB (2K x 14) of one-time-programmable (OTP) program memory, 128 bytes of RAM, 22 digital I/O pins, and 5 channels of 8-bit Analog-to-Digital conversion with brown-out-reset (BOR) supervision. The "E" suffix designates the extended industrial operating range of -40 °C to +125 °C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripheral interfaces on one die. The PIC16C family uses a Harvard RISC architecture, so instruction fetch and data access occur on separate buses; this lets most instructions execute in a single instruction cycle, which is the source of the PIC family's well-known 1:1 MIPS-to-MHz efficiency. The PIC16C72A specifically occupies the "peripheral-rich" tier of the mid-range family, distinguished from smaller cousins like PIC16C61/62 by an on-chip 8-bit ADC, a synchronous serial port (SSP) configurable for SPI or I2C, and a capture/compare/PWM (CCP) module. Differentiating features include a programmable 8-bit Timer0 with an 8-bit prescaler, an additional 16-bit Timer1, a watchdog timer with its own on-chip RC oscillator, and power-saving SLEEP mode with wake-up on pin change. The 8-bit successive-approximation ADC has 5 input channels multiplexed to a single sample-and-hold, giving designers analog sensing without an external converter IC. Brown-out-reset holds the MCU in reset when VDD drops below a programmable threshold, preventing code-execution errors at low supply voltage. Architecturally, the PIC16C72A uses a 14-bit instruction word and 8-bit data path, with a 35-instruction opcode set that is a superset of the PIC16C6X/7X base, providing easy migration within the mid-range family. The OTP EPROM cell allows one-time field programming with a standard EPROM programmer socket, making the part cost-optimized for mature, high-volume production where code revision is finalized. Typical applications include industrial control front-ends, sensor signal-conditioning nodes, automotive body-electronics nodes (with the appropriate temperature grade), appliance user-interface controllers, and battery chargers requiring closed-loop analog monitoring. The 4 MHz maximum clock at the "04" speed grade suits designs that do not need high-speed serial or pulse-width-modulation switching. When designing with this part, evaluate whether OTP memory fits the production volume and code-stability profile: for prototypes or frequent firmware updates, choose the Flash-based PIC16F72 in the same 28-pin SOIC footprint. A 1 µF tantalum decoupling capacitor placed within 5 mm of VDD/SS pin pair is mandatory due to the EPROM-programming charge-pump transient load.

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PIC16C72A-04E/SS - 4MHz 8-bit CMOS MCU, 3.5KB EPROM | Microchip
PIC16C72A-04E/SS

PIC16C72A-04E/SS - 4MHz 8-bit CMOS MCU, 3.5KB EPROM | Microchip

The Microchip Technology PIC16C72A-04E/SS is a high-performance 8-bit CMOS OTP-based PIC microcontroller built around the PIC16 RISC architecture, featuring 3.5 KB of EPROM program memory, 128 bytes of RAM, and 22 general-purpose I/O lines. It is housed in a 28-pin SSOP (Shrink Small Outline Package) with surface-mount gull-wing leads and is rated for 4 MHz maximum clock input, with instruction execution of 200 ns per single-word instruction. The 'E' suffix denotes the extended industrial operating temperature range, while '04' indicates the 4 MHz clock rating, and '/SS' specifies the SSOP package. An 8-bit PIC RISC microcontroller is a member of the reduced-instruction-set computing family of microcontrollers designed around a Harvard architecture, which separates program and data memory to enable single-cycle instruction fetch plus simultaneous data access. The PIC16C72A belongs to Microchip's PIC16C7x mid-range family, which sits between the baseline PIC16C5x and the enhanced PIC16C9x families in the broader PICmicro taxonomy: microcontroller → MCU → embedded controller → semiconductor. This architecture provides deterministic timing, low power consumption, and code density that has made the PIC16 mid-range platform one of the most widely deployed 8-bit microcontroller families in industrial, automotive, and consumer embedded designs since the mid-1990s. Key features include 5 channels of 8-bit Analog-to-Digital (A/D) conversion, a Synchronous Serial Port (SSP) configurable for either 3-wire SPI or 2-wire I²C operation, a Capture/Compare/PWM (CCP) module, two additional timers (Timer1 16-bit and Timer2 8-bit), 35 single-word instructions, and Brown-out Reset (BOR) circuitry for reliable brown-out recovery. The PIC16C72A operates from 4.0 V to 5.5 V and integrates 13 interrupt sources with an 8-level hardware stack. The SSOP-28 footprint enables compact PCB layouts in applications where the legacy 28-pin DIP PIC16 footprint is too large. Typical applications include industrial control panels, automotive body electronics, appliance control boards, sensor signal conditioning front-ends, and legacy embedded system retrofits where pin-compatible PIC16 drop-in upgrades are required. The 5-channel 8-bit ADC and CCP PWM make it particularly well-suited to closed-loop motor speed control and temperature monitoring designs. When designing with the PIC16C72A, note that the device uses One-Time-Programmable (OTP) EPROM for program storage; therefore the firmware is permanently locked after programming. Designers should validate firmware in flash-based PIC16F equivalents or in-windowed UV-erasable ceramic parts before committing to the OTP SSOP-28 form factor for production.

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PIC16C72A-04I/SO - 8-Bit 4MHz OTP MCU, 3.5KB, 28-SOIC
PIC16C72A-04I/SO

PIC16C72A-04I/SO - 8-Bit 4MHz OTP MCU, 3.5KB, 28-SOIC

The Microchip Technology PIC16C72A-04I/SO is an 8-bit CMOS OTP (One-Time Programmable) RISC microcontroller operating at 4 MHz, featuring 3.5 KB (2K x 14) of program memory and 128 bytes of RAM, housed in a 28-pin SOIC (SO) wide-body package. The 'I' suffix indicates the industrial temperature grade (-40C to +85C) and the '04' suffix specifies a 4 MHz maximum clock speed, making this variant suitable for cost-constrained designs not requiring higher speed grades. A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture 8-bit RISC device widely used in embedded systems. It belongs to the broader category of microcontrollers -> embedded controllers -> microprocessors -> semiconductors. PIC MCUs use separate program and data buses, a small instruction set executed in single cycles, and integrated analog/digital peripherals that reduce external component count. PIC16C-series parts in particular sit in Microchip's mid-range family and target applications requiring modest performance with rich peripheral integration. Key features include 22 digital I/O pins with individual direction control, a 5-channel 8-bit analog-to-digital converter (A/D) for sensor interfacing, two timers (Timer0: 8-bit with 8-bit prescaler; Timer1: 16-bit with prescaler, incrementable during sleep via external crystal), a capture/compare/PWM (CCP) module for motor and waveform control, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. Brown-out Reset (BOR) protection guards against unstable supply at low voltages. The PIC16C72A uses a Harvard RISC core executing most instructions in a single cycle (200 ns at 4 MHz oscillator). The OTP program memory can be written once with a device programmer, providing low per-unit cost for production. The architecture includes an 8-level deep hardware stack, 13 interrupt sources, and a watchdog timer for safe operation in noisy industrial environments. Typical applications include industrial control boards, sensor interface modules, appliance control, motor control via PWM, automotive subsystems (non-safety), consumer electronics, and embedded data acquisition. The integrated 8-bit ADC and I2C/SPI make it well-suited to multi-sensor monitoring with a single chip. When designing with this part, note that OTP memory cannot be re-programmed in the field. For in-system programming or firmware updates, the PIC16F72 flash equivalent is recommended as a drop-in alternative in the same 28-pin SOIC footprint. This page synthesizes distributor pricing, drop-in alternatives from Microchip's same product family, and practical design notes not found in the standalone datasheet, providing a one-stop reference for procurement and engineering teams.

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PIC16C72A-04I/SP - 8-Bit 4MHz OTP MCU 22 I/O 5xADC | Microchip
PIC16C72A-04I/SP

PIC16C72A-04I/SP - 8-Bit 4MHz OTP MCU 22 I/O 5xADC | Microchip

The Microchip Technology PIC16C72A-04I/SP is an 8-bit CMOS OTP-based microcontroller from the PIC® 16C family, featuring 4 MHz operation, 3.5 KB (2K x 14) of one-time-programmable program memory and 128 bytes of RAM in a 28-pin SPDIP (Skinny Plastic DIP) package. The '-04' speed grade denotes 4 MHz maximum clock and 200 ns instruction execution, while the 'I' suffix indicates the industrial temperature range of -40°C to +85°C suitable for harsh-environment and non-automotive industrial applications. What is a PIC 16C microcontroller? The PIC 16C family is Microchip's classic mid-range 8-bit OTP (one-time-programmable) microcontroller line built on a Harvard architecture CMOS process, succeeding the PIC 16C5X baseline. PIC microcontrollers are RISC-style single-cycle-instruction devices widely used in embedded control where deterministic timing, low cost, and ease of programming in assembly or C are priorities, sitting in the broader taxonomy of microcontroller -> embedded controller -> integrated circuit -> semiconductor. The PIC16C72A integrates 22 digital I/O pins with individual direction control, a 5-channel 8-bit Analog-to-Digital Converter (ADC), an 8-bit Timer0 with 8-bit prescaler, a 16-bit Timer1 with prescaler (increments during sleep via external crystal), a Capture/Compare/PWM (CCP) module, and a Synchronous Serial Port (SSP) configurable as either 3-wire SPI™ or 2-wire I²C™. Brown-Out Reset (BOR) circuitry protects against supply-voltage dips below the 4.0 V minimum operating threshold, ensuring defined power-on behavior. From an architectural standpoint, the device uses a 14-bit instruction word with only 35 single-word instructions, providing upwards code compatibility with PIC16C5X and PIC12CXXX baselines and a compact, deterministic programming model. Power supply is 4.0–5.5 V (extended commercial range), with low-power sleep and watchdog-termination primitives that extend battery and standby operation. Typical applications include industrial sensor interfaces, motor control via the CCP/PWM peripheral, analog signal acquisition through the 5-channel 8-bit ADC, SPI/I²C slave peripherals for sensor hubs, and Brown-Out-Reset-protected consumer appliances. Industrial control and instrumentation is the dominant vertical because of the wide temperature grade and 5 ADC channels. Selection between PIC16C72A and the flash-based PIC16F72A is governed by whether OTP one-time programming fits the production model; many designs migrate to PIC16F72A for in-field re-programmability. When designing with this device, ensure the 28-SPDIP socket or PCB footprint matches Microchip's recommended land pattern; pin 1 is marked by the notch/dot convention of the SPDIP family. Because OTP memory cannot be erased, plan for code-finalization before programming or select the PIC16F72A flash equivalent for iterative development. Place a 0.1 µF decoupling capacitor adjacent to VDD/AVDD/VSS and follow Microchip ANs for SSP/SPI and I²C bus pull-ups. This page synthesizes verified DigiKey/Mouser distributor pricing, Microchip PIC16C72A datasheet parameters, drop-in alternative cross-references, and practical design notes not assembled in any single manufacturer or distributor page.

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PIC16C72A-04I/SS - 4MHz 8-Bit CMOS MCU, 3.5KB OTP, SSOP-28
PIC16C72A-04I/SS

PIC16C72A-04I/SS - 4MHz 8-Bit CMOS MCU, 3.5KB OTP, SSOP-28

The Microchip Technology PIC16C72A-04I/SS is an 8-bit CMOS RISC microcontroller in a 28-pin SSOP package, featuring 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and a 4 MHz instruction-cycle clock speed. It integrates a 5-channel 8-bit Analog-to-Digital Converter (ADC), two 8-bit timers (Timer0 with 8-bit prescaler plus Timer1/Timer2), a Capture/Compare/PWM (CCP) module, and a Synchronous Serial Port (SSP) configurable as SPI or I2C. With 22 I/O pins, brown-out reset (BOR), and a wide 2.5V-6.0V operating range, this industrial-temperature-grade (-40C to +85C) part targets cost-sensitive embedded control. An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions one byte at a time on an internal data bus. It belongs to the broader category of microcontrollers -> microprocessors -> digital ICs -> integrated circuits -> semiconductors. The PIC16C72A sits inside Microchip's PIC16C mid-range family (PIC16C -> PIC16 -> PIC mid-range -> 8-bit PIC architecture -> Harvard RISC), uses separate program and data buses (Harvard architecture) for deterministic single-cycle instruction execution, and is part of the OTP-based 'C' subfamily that is one-shot programmable. Key differentiating features of this part include its high-performance 200 ns instruction cycle, 13-bit program counter capable of addressing up to 8K x 14 words, 25 mA source/sink current per I/O pin for direct LED and relay drive, an internal RC oscillator option for reduced BOM, and ultra-low standby current (typically 1 uA at 3V/32 kHz). The 22 I/O lines and flexible peripheral set make it well-suited for closed-loop control tasks. The PIC16C72A is built on a low-power CMOS process with 5V typical operating voltage. Its 8-bit ALU plus 14-bit instruction word gives a code density advantage over byte-wide 8-bit MCU architectures, while the CCP and SSP peripherals offload complex timing and serial-communication tasks from software. The integrated 8-bit ADC samples up to 5 analog channels at a rate sufficient for thermistor, potentiometer, and battery-monitoring feedback loops. Typical applications include industrial sensor interfaces, motor control (small DC fans, solenoids), appliance control boards, automotive body electronics (non-safety subsystems), security-system keypads, and general-purpose embedded control in cost-sensitive products. The wide operating voltage range (2.5V to 6.0V) and high I/O drive strength allow direct interfacing to 5V actuators without level shifters. When designing with this part, account for the OTP (one-time-programmable) memory: code must be 100% verified before final programming because the device cannot be erased. Use the JW (windowed) package variant, PIC16C72A-04/JW, for prototype development so that UV erasure is possible, then move to the SSOP or PIC cost-down version for production. This page synthesizes verified distributor pricing, parameter-by-parameter comparison with pin-compatible PIC16F flash alternatives and same-package speed variants, and design notes not found on a single manufacturer product page - including a 6V absolute-maximum warning that is not always highlighted in datasheet summaries.

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PIC16C72A-20/SP - 8-Bit OTP MCU 20MHz 3.5KB | Microchip
PIC16C72A-20/SP

PIC16C72A-20/SP - 8-Bit OTP MCU 20MHz 3.5KB | Microchip

The Microchip Technology PIC16C72A-20/SP is a high-performance 8-bit CMOS OTP-based PIC microcontroller operating at up to 20MHz with 200ns instruction execution, packaged in a 28-pin SPDIP (Skinny Plastic DIP) through-hole format. It integrates 3.5KB (2K x 14) of One-Time-Programmable program memory, 128 bytes of RAM, and 22 digital I/O lines. The device features 5 channels of 8-bit Analog-to-Digital conversion, a Capture/Compare/PWM module, and a Synchronous Serial Port configurable as 3-wire SPI or 2-wire I2C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on a single silicon die. The PIC16C72A belongs to the mid-range PIC16 family, sitting between base-line PIC16C5X and higher-pin-count PIC16C7X devices in Microchip's taxonomy: 8-bit MCU -> PIC micro -> mid-range PIC16 -> PIC16C72A. OTP program memory is factory- or user-programmable one time, distinguishing this part from Flash-based PIC16F equivalents like the PIC16F72. Key features include a 200ns instruction cycle, 8-level deep hardware stack, 8-bit Timer0 with 8-bit prescaler, 16-bit Timer1, 8-bit Timer2, an analog comparator, brown-out reset (BOR), and a watchdog timer with its own on-chip RC oscillator for reliable operation. The part supports in-circuit serial programming via two pins and operates across 4.0V to 5.5V supply with commercial, industrial, and extended temperature grades. The PIC16C72A's architecture uses a RISC-style instruction set with only 35 single-word instructions, enabling compact code generation and predictable interrupt latency. The Harvard bus separates program and data memory, allowing simultaneous fetch and access. Two additional timers (Timer1, Timer2) complement Timer0 to provide timing, capture, compare, and PWM resources in a single 28-pin package, reducing system BOM versus discrete timer circuits. Typical applications include industrial control front-ends, sensor signal conditioning with on-chip ADC, low-cost motor drive PWM, automotive body electronics, and small appliances. The integrated ADC and PWM peripherals eliminate external ADC/PWM ICs in simple closed-loop systems. The brown-out reset circuit holds the MCU in reset during supply dips, preventing EEPROM corruption and erratic code execution in noisy industrial environments. When designing with the PIC16C72A-20/SP, note that OTP memory cannot be reprogrammed in the field - prototype on the flash-based PIC16F72-I/SP for development, then move to PIC16C72A-20/SP for production cost savings. Adequate decoupling (100nF + 10uF bulk) is required near the VDD pins. The MCLR pin must be pulled high through a resistor for normal operation, and the OSC1/OSC2 selection must match the chosen crystal or resonator. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C72A-20E/SS - 8-Bit MCU 3.5KB OTP 28SSOP | Microchip
PIC16C72A-20E/SS

PIC16C72A-20E/SS - 8-Bit MCU 3.5KB OTP 28SSOP | Microchip

The Microchip Technology PIC16C72A-20E/SS is an 8-bit CMOS OTP-based microcontroller built on the PIC16 mid-range RISC architecture, offering 3.5 KB of program memory, 128 bytes of RAM, and 22 digital I/O pins in a 28-pin SSOP (Shrink Small Outline Package) with extended industrial temperature grade. It executes instructions in a 200 ns single cycle at 20 MHz clock input and uses only 35 single-word instructions, simplifying code development. What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer with an 8-bit data path that integrates a CPU, program memory (ROM/OTP/Flash), data memory (RAM), timers, I/O ports, and peripheral interfaces on one die. It belongs to the broader hierarchy: microcontroller -> embedded processor -> semiconductor -> integrated circuit. Mid-range PIC MCUs like the PIC16C72A sit between baseline PIC10/12 devices and enhanced PIC18 devices in Microchip's lineup, balancing cost, peripheral integration, and code efficiency. Key features include 5 channels of 8-bit Analog-to-Digital converter, two additional timers (Timer0, Timer1, Timer2 with PWM), a Capture/Compare/PWM (CCP) module, and a Synchronous Serial Port (SSP) configurable as either 3-wire SPI or 2-wire I²C. The device supports in-circuit serial programming and operates from 2.5 V to 5.5 V across the -40 °C to +125 °C extended industrial temperature range. Brown-out Reset and a Watchdog Timer with on-chip RC oscillator are built in for reliable unattended operation. Internally the PIC16C72A uses a Harvard architecture with separate program and data buses, a hardware multiply assist, and a 14-bit instruction word with 8-bit data path. The OTP (one-time programmable) program memory is suited to mature, stable firmware in volume production where field reprogrammability is not required, and the SSOP-28 footprint supports compact surface-mount assembly. Typical applications include appliance control panels, sensor signal conditioning with on-chip ADC, low-cost motor control via CCP/PWM, battery chargers, simple sensor hubs, and industrial instrumentation front-ends. The extended temperature grade also suits outdoor or harsh-environment nodes. Design consideration: pair the ADC inputs with adequate source-impedance buffering and use the SSP module's I²C mode with proper pull-ups. The 'E' suffix indicates the extended industrial temperature grade (-40 °C to +125 °C) compared to the standard 'I' grade (-40 °C to +85 °C), so verify the thermal envelope for your enclosure before substitution. This page combines datasheet specifications, distributor pricing, drop-in alternatives, and design notes not consolidated on the manufacturer product page, providing practical context for sourcing, replacement, and PCB design decisions.

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PIC16C72A-20I/ML - 8-bit OTP MCU 3.5KB Flash 28-VQFN | Microchip
PIC16C72A-20I/ML

PIC16C72A-20I/ML - 8-bit OTP MCU 3.5KB Flash 28-VQFN | Microchip

The Microchip Technology PIC16C72A-20I/ML is an 8-bit CMOS OTP-based microcontroller in the PIC16C family, delivering 200 ns instruction execution (5 MIPS at 20 MHz) from a 28-pin VQFN package with exposed thermal pad. It integrates 3.5 KB (2K x 14) of One-Time-Programmable program memory, 128 bytes of RAM, 22 digital I/O pins, and a 5-channel 8-bit Analog-to-Digital converter. An 8-bit OTP microcontroller is a single-chip computer built around an 8-bit data path with non-erasable program memory; it sits within the broader taxonomy of MCU -> microcontroller -> embedded controller -> semiconductor. PIC16C72A devices target cost-sensitive, low-to-mid volume applications where field reprogrammability is not required, and they remain upwards compatible with the PIC16C5X and PIC12CXXX baselines, preserving legacy code investment. Key features include two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM (CCP) module, a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, and a 20 MHz external oscillator interface. The '20I' suffix denotes the 20 MHz speed grade and the industrial -40C to +85C operating temperature range, while '/ML' specifies the 28-VQFN (6x6 mm) exposed-pad surface-mount package. The PIC16C72A uses a Harvard RISC architecture with only 35 single-word instructions, supporting easy assembly or C programming. Its wide operating voltage range (2.5 V to 6.0 V) and low-power CMOS design make it well-suited to battery-powered or industrial sensor applications. The integrated ADC and CCP peripherals reduce BOM count in motor-control, lighting, and analog monitoring designs. Typical applications include appliance control boards, HVAC sensor interfaces, simple motor-control and PWM-driven loads, low-end consumer electronics, and industrial control modules. The combination of OTP memory, A/D, and serial peripherals also suits it for sensor-hub prototyping. When designing with this device, remember that OTP memory is one-time-programmable - firmware must be fully validated before wafer programming. The exposed thermal pad on the VQFN-28 must be soldered to a ground copper pour for mechanical and thermal performance. Decoupling VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the pin is recommended. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC16C72A-20I/SO - 8-Bit 20MHz OTP MCU 3.5KB 28-SOIC | Microchip
PIC16C72A-20I/SO

PIC16C72A-20I/SO - 8-Bit 20MHz OTP MCU 3.5KB 28-SOIC | Microchip

The Microchip Technology PIC16C72A-20I/SO is an 8-bit CMOS OTP-based microcontroller in the PIC16C mid-range family, operating at up to 20 MHz with 3.5 KB (2K x 14) of one-time-programmable program memory, 128 bytes of RAM, and 22 digital I/O pins. The "-20I" suffix denotes 20 MHz maximum clock speed and the industrial operating temperature range of -40C to +85C, while "/SO" indicates the 28-pin SOIC wide-body surface-mount package supplied in tube. The device integrates 5 channels of 8-bit A/D conversion, two additional timers beyond the base Timer0/Timer1, a Capture/Compare/PWM (CCP) module, and a Synchronous Serial Port (SSP) configurable as either 3-wire SPI or 2-wire I2C. An 8-bit PIC microcontroller is a RISC (Reduced Instruction Set Computer) device built around a Harvard architecture with separate program and data buses, executing one instruction per instruction cycle (4 clock cycles). The PIC16C family uses CMOS technology with OTP or EPROM program memory, distinguished from the flash-based PIC16F family by being one-time-programmable, which makes them common in cost-sensitive production runs where code is finalized at volume. The PIC16C72A sits in the mid-range tier, offering 35 single-word instructions, 8-level hardware stack, and 200 ns instruction execution time, providing a balance of capability and code density for embedded control. Key features include 5 channels of 8-bit A/D (suitable for sensor interfacing), 22 individually-direction-controlled I/O pins, a 16-bit Timer1 with prescaler and external crystal sleep-mode increment capability, and an SSP module that supports both SPI master/slave and I2C master/slave protocols. The part operates from 3.0 V to 5.5 V and includes power-managed modes such as Sleep with wake-up on interrupt, plus a Watchdog Timer with its own on-chip RC oscillator for reliable operation without external supervision. Architecturally, the PIC16C72A uses a RISC core with 14-bit instruction words, an 8-bit data path, and dedicated peripheral modules mapped into the SFR space. The 8-bit A/D converter is successive-approximation type with acquisition time controlled by software, sufficient for slow-changing analog signals such as temperature, light, or position feedback. The CCP module supports capture (for timing measurement), compare (for timed output events), and PWM (for motor, LED, or audio frequency generation), making the device a versatile single-chip solution. Typical applications include industrial control panels, appliance control boards, sensor interface modules, low-end motor control, LED lighting controllers, and battery-powered instrumentation where the OTP memory model and 5V operation simplify BOM and supply design. The wide 28-SOIC footprint also makes it breadboard-friendly for prototype and educational use, and the broad base of legacy PIC16 code enables rapid porting from PIC16C7X designs. When designing with the PIC16C72A-20I/SO, ensure that the oscillator configuration (RC, XT, HS, or LP) is selected in the configuration word to match the external clock source, and that the A/D converter's reference voltage is stable - the 5V supply can be used as Vref when accuracy requirements are modest. Because OTP memory cannot be reprogrammed, prototypes should be developed on a flash-based equivalent (such as the PIC16F72 or PIC16F73) and the final code only burned into the PIC16C72A in production. This page synthesizes distributor pricing, drop-in alternative MPNs, pinout data, and practical design notes that go beyond the manufacturer datasheet, giving engineers a single reference for sourcing and designing with the PIC16C72A-20I/SO.

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PIC16C72A-20I/SP - 8-bit OTP MCU, 20MHz, 3.5KB | Microchip
PIC16C72A-20I/SP

PIC16C72A-20I/SP - 8-bit OTP MCU, 20MHz, 3.5KB | Microchip

The Microchip Technology PIC16C72A-20I/SP is a 20 MHz, 8-bit CMOS OTP microcontroller in a 28-pin SPDIP (0.300 inch, 7.62 mm) through-hole package, providing 3.5 KB of program memory (2K x 14 words), 128 bytes of RAM, and 22 digital I/O pins. The -20I/SP suffix decodes as 20 MHz maximum clock, industrial temperature grade (-40C to +85C), and SPDIP package, with the 5-channel 8-bit A/D converter integrating the part's principal analog interface. What is an 8-bit OTP microcontroller? OTP (One-Time Programmable) microcontrollers embed PROM rather than flash for code storage; the device can be programmed once and the bit cells cannot be erased, lowering die cost versus flash equivalents. The PIC16C72A sits inside Microchip's mid-range PICmicro architecture, an 8-bit RISC family delivering deterministic 200 ns instruction execution across a 35-instruction set. The PIC16C72A's role in the broader hierarchy is: microcontroller -> embedded controller -> semiconductor -> integrated circuit. Key features include 200 ns instruction cycle, 14-bit instruction word, hardware USART (SCI) and synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, two timers (8-bit Timer0 with prescaler and 16-bit Timer1 with prescaler/Sleep increment), one Capture/Compare/PWM module, five 8-bit A/D channels with input multiplexing, and a watchdog timer with on-chip RC oscillator. The 22 I/O pins each carry individual direction control, with high-current sink/source capability for direct LED drive. The PIC16C72A uses a Harvard architecture with separated program (14-bit) and data (8-bit) buses, plus a 15-level hardware stack and direct/indirect addressing modes for both ROM and RAM. The integrated brown-out reset, power-on reset, and watchdog timer with dedicated RC oscillator give the part the autonomous supervision expected in industrial and appliance designs. The SSP peripheral is software-selectable between SPI master/slave and I2C master/slave modes, removing the need for bit-banged serial on slow 8-bit designs. Typical applications include appliance control (washing machines, microwave ovens, HVAC damper actuators), sensor signal conditioning with on-chip ADC, industrial metering, automotive interior subsystems, low-cost digital control panels, and battery chargers using the CCP PWM output. The 22-pin count supports sufficient parallel I/O for keypad scanning plus multi-segment LCD drive with an external bias network. When designing with this part, note that OTP precludes in-field firmware updates, so engineering samples or pre-production prototypes should validate code on the PIC16F72 flash equivalent before committing to the C72A for production. For system bring-up, allow at least 4 ms MCLR rise time and verify the oscillator start-up timer (OST) timing across the full -40C to +85C range. This page synthesizes Microchip datasheet DS35008B information, distributor stock data, drop-in alternatives within the 28-pin SPDIP footprint, and practical design notes not collected in any single manufacturer document.

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PIC16C72A-20I/SS - 8-Bit 20MHz 3.5KB OTP MCU 28-SSOP | Microchip
PIC16C72A-20I/SS

PIC16C72A-20I/SS - 8-Bit 20MHz 3.5KB OTP MCU 28-SSOP | Microchip

The Microchip Technology PIC16C72A-20I/SS is an 8-bit RISC CMOS microcontroller from the PIC16C family, featuring a 20 MHz maximum clock speed, 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory and 128 bytes of data RAM, housed in a 28-pin SSOP package. The device integrates a 5-channel 8-bit Analog-to-Digital Converter (ADC), two additional timers, a capture/compare/PWM module, and a USART, delivering the PIC16C5X/PIC12CXXX upward-compatible instruction set with 35 single-word instructions. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and a set of programmable peripheral interfaces. The 8-bit class of microcontrollers dominates cost-sensitive embedded control tasks, where deterministic instruction timing and low power are valued more than raw throughput. PIC microcontrollers, originally pioneered by General Instrument and popularized by Microchip Technology, use a Harvard architecture with separate program and data buses and a reduced instruction set, allowing most instructions to execute in a single instruction cycle. The PIC16C72A executes instructions in 200 ns at 20 MHz, and its core features an 8-level deep hardware stack, direct/indirect/relative addressing modes, and a programmable code protection bit. The five 8-bit ADC channels with input multiplexing support sensor acquisition without external analog components, while the 8-bit/16-bit Timer0/Timer1/Timer2 blocks and CCP module support PWM-driven motor, lighting and switching applications. Operating from 2.5 V to 5.5 V (industry-standard 5 V), the PIC16C72A includes brown-out reset, power-on reset, watchdog timer with its own on-chip RC oscillator, and an in-circuit serial programming interface. The 28-SSOP package (209 mil body) provides 22 digital I/O lines with high-current sink/source capability. The OTP memory is one-time programmable, requiring factory or field programming before deployment. Typical applications include appliance control, automotive body and chassis subsystems, HVAC fan and damper control, smart-card readers, battery chargers, and small-form-factor sensor interface boards. The wide operating temperature range of -40 °C to +85 °C (industrial grade, denoted by the I suffix) supports harsh environments. When designing with this device, ensure adequate decoupling (100 nF ceramic at VDD) and reserve an MCLR pull-up since the master-clear pin is used for in-circuit programming. The OTP memory restricts firmware iteration in production; consider the PIC16F72 flash variant for development. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design guidance not consolidated on the manufacturer datasheet.

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PIC16C72A/JW - 8-Bit OTP MCU 20MHz 3.5KB EPROM 28-CerDip | Microchip
PIC16C72A/JW

PIC16C72A/JW - 8-Bit OTP MCU 20MHz 3.5KB EPROM 28-CerDip | Microchip

The Microchip Technology PIC16C72A/JW is a high-performance 8-bit CMOS OTP-based microcontroller built on Microchip's PIC® architecture, delivering 200 ns instruction execution at 20 MHz clock with 3.5 KB (2K x 14) of UV-erasable EPROM program memory in a 28-pin windowed CERDIP package. The /JW suffix indicates a UV-erasable CERDIP-28 (0.300 inch) variant that supports development, prototyping, and field reprogramming of legacy designs where flash-less code updates are still required. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data RAM, and programmable I/O peripherals on one die. Microcontrollers sit within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC16C72A family belongs to Microchip's mid-range PIC® lineup (PIC16C12/PIC16C71/PIC16C71x/PIC16C7x series), which adds enhanced peripherals such as a 10-bit ADC, PWM, capture/compare and a synchronous serial port over the baseline PIC16C5X architecture. Key features include 5 channels of 8-bit A/D conversion, two additional 8-bit timers (Timer0, Timer1, Timer2), a Capture/Compare/PWM (CCP) module, a synchronous serial port configurable for either 3-wire SPI or 2-wire I²C, 22 digital I/O pins, a hardware USART/SCI channel, and 128 bytes of RAM. The device operates from 4.0 V to 5.5 V, executes all 35 single-word instructions in one cycle (200 ns at 20 MHz), and supports in-circuit serial programming (ICSP) plus in-circuit debugging through the same two pins used for production programming. The PIC16C72A uses a RISC Harvard-architecture core with separate program and data buses, allowing instruction fetch and operand access in the same cycle. The CMOS process, combined with nanoWatt-style sleep/idle modes, achieves lower operating current than the older PIC16C5X NMOS family. The CCP module generates PWM outputs for motor and lighting control and measures pulse widths for sensor interfaces; the 8-bit ADC (successive approximation) reads up to five analog channels with software-selectable reference voltages. Typical applications include industrial motor control (PWM-driven H-bridges and BLDC drivers), sensor signal conditioning (analog front-end with on-chip ADC), automotive body electronics (low-cost node controllers), legacy embedded product retrofits, and educational/prototyping platforms where the windowed CERDIP allows fast UV erasure during firmware iteration. The /JW variant is also widely used in avionics and military subsystems that require verified, non-flashable code storage with field re-programmability. When designing with this part, remember that the OTP EPROM is erased only by UV light through the quartz window; exposure to direct sunlight or fluorescent tubes will eventually corrupt the program memory. Plan for proper socketing, ESD handling, and storage in opaque antistatic tubes. For volume production migrate to the flash-based PIC16F72 (drop-in compatible for most peripherals) which removes the UV-erasure step entirely. This page consolidates distributor pricing, drop-in CERDIP-28 alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C72AT-04/SO - 8-Bit OTP MCU 4MHz 3.5KB 28-SOIC | Microchip
PIC16C72AT-04/SO

PIC16C72AT-04/SO - 8-Bit OTP MCU 4MHz 3.5KB 28-SOIC | Microchip

The Microchip Technology PIC16C72AT-04/SO is an 8-bit PIC microcontroller built on a RISC architecture, integrating 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 22 digital I/O lines in a 28-pin SOIC package. The device operates at 4 MHz from a 4V to 5.5V supply and is rated for the commercial temperature range, providing a balance of cost and peripheral integration for embedded designs that do not require in-system reprogrammability. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces. PIC microcontrollers use a Harvard RISC core with only 35 single-word instructions, where every instruction executes in one instruction cycle except program branches, which take two. This compact instruction set keeps firmware small and deterministic, which is why PIC MCUs remain common in cost-sensitive industrial and consumer products. Key features include five 8-bit I/O ports, a 5-channel 8-bit Analog-to-Digital Converter (ADC), a Capture/Compare/PWM (CCP) module, a Synchronous Serial Port (SSP) supporting SPI and I2C, a USART for asynchronous serial communication, and two 8-bit timers plus one 16-bit timer. These integrated peripherals allow a single MCU to replace multiple external components, reducing BOM cost and PCB area in sensor-interface, motor-control, and human-machine interface designs. The PIC16C72A uses a 14-bit instruction word and the standard mid-range PIC core, which means existing PIC16C7x firmware and development tools can be ported with minimal changes. The 4 MHz speed grade is the slowest of the PIC16C72A family (which also includes 10 MHz and 20 MHz grades), making the -04 part suitable for applications where low electromagnetic emissions or relaxed timing budgets are more important than raw throughput. According to the Microchip datasheet, the device supports in-circuit serial programming via two pins on most package variants. Typical applications include simple motor control loops using the CCP PWM channel, sensor data acquisition with the 8-bit ADC, RS-232 bridges using the USART, and front-panel controllers for appliances and industrial equipment. The OTP program memory is programmed once at production time, which makes the PIC16C72AT-04/SO well suited to high-volume, fixed-function products where firmware rarely changes. When designing with this device, ensure the brown-out reset voltage is correctly configured in the configuration word and that decoupling capacitors (typically 0.1 uF) are placed close to VDD and VSS pins. OTP memory cannot be erased, so verify firmware thoroughly using a windowed (JW) or flash equivalent during development before committing to the OTP part for production. This page synthesizes distributor pricing, pin-compatible drop-in alternatives (including PIC16C72A and PIC16C72 same-package variants), and practical design notes that supplement the manufacturer datasheet.

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PIC16C72AT-04/SS - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
PIC16C72AT-04/SS

PIC16C72AT-04/SS - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C72AT-04/SS is an 8-bit CMOS microcontroller from the PIC16C family, featuring a 4 MHz internal operating frequency, 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 22 digital I/O pins in a 28-pin SSOP package. The 'T' suffix indicates tape-and-reel packaging, the '-04' speed grade denotes a 4 MHz maximum oscillator frequency, and the '/SS' suffix specifies the 0.209 inch (5.30 mm) narrow-body Shrink Small Outline Package. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and programmable I/O peripherals. The PIC16C7x family belongs to Microchip's mid-range architecture, sitting between baseline (PIC10/12/16C5x) and enhanced mid-range (PIC16F1xxx) tiers. The mid-range RISC core executes 35 single-word instructions, with all instructions completing in one instruction cycle except program branches (two cycles). The 8-bit data path and 14-bit instruction word are characteristic of this generation, providing efficient code density for embedded control applications. Key features include a built-in 8-channel 8-bit Analog-to-Digital Converter (ADC), two 8-bit timers (Timer0 and Timer2) plus one 16-bit timer (Timer1), a Universal Synchronous Asynchronous Receiver Transmitter (USART/SCI) for serial communication, an I2C/SPI-compatible Synchronous Serial Port (SSP), and a watchdog timer with its own on-chip RC oscillator for reliable operation. The supply voltage range is 4.0V to 5.5V (commercial/industrial grade), and the device operates across 0C to +70C. Power consumption is minimized through the SLEEP mode and the wide operating voltage range, making this MCU suitable for both line-powered and battery-assisted applications. The PIC16C72A uses Harvard architecture with separate program and data buses, allowing instruction fetch to occur in parallel with data access. This yields nearly 4 MIPS sustained throughput at 4 MHz oscillator input. The OTP program memory is programmed once via the In-Circuit Serial Programming (ICSP) interface and cannot be erased, making this part ideal for mature production designs where firmware is finalized. Designers requiring reprogrammability during development should select the PIC16F72 Flash-based equivalent. Typical applications include industrial process control, sensor signal conditioning, automotive body electronics (non-safety-critical subsystems), HVAC control systems, and consumer appliance control. The integrated ADC simplifies analog sensor interfacing for temperature, pressure, and flow measurement. When designing with this part, plan for OTP-only programming in production and stock sufficient inventory. For prototype or low-volume runs where field updates may be required, evaluate the PIC16F72 or PIC16C72 JW (windowed EPROM) variant. Ensure decoupling capacitors (100 nF + 10 uF bulk) are placed within 5 mm of VDD, and that MCLR is pulled high through a 10 kohm resistor for normal operation. This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the same PIC16C7x family, and practical design notes not found on individual distributor listings.

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PIC16C72AT-04E/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
PIC16C72AT-04E/SO

PIC16C72AT-04E/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C72AT-04E/SO is an 8-bit PIC CMOS OTP (One-Time Programmable) microcontroller with 3.5KB (2K x 14) of program memory, 128 bytes of RAM, and 22 I/O lines, housed in a 28-pin SOIC package rated for the extended -40C to +125C industrial temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash/OTP), data memory (RAM), and peripherals onto one silicon die. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) architecture with only 35 single-word instructions, making them easy to learn and program. The PIC16C72A belongs to Microchip's mid-range PIC16 family, positioned between the baseline PIC10/12/16 series and the enhanced PIC18 family. MCUs sit at the bottom of the embedded computing hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor, and serve as the brain of countless industrial, automotive, and consumer products. Key features of this variant include a 4 MHz maximum operating clock frequency (200 ns instruction cycle), an integrated 5-channel 8-bit Analog-to-Digital Converter (ADC), two additional 8-bit timers plus one 16-bit timer/counter, a USART/SCI serial port, and a capture/compare/PWM (CCP) module. The 4 MHz speed grade uses the "-04" suffix per Microchip's nomenclature, distinguishing it from 10 MHz (-10) and 20 MHz (-20) siblings in the same family. The architecture employs a Harvard-style separate program/data bus design with a 14-bit instruction word, enabling single-cycle instruction execution except for program branches (two cycles). The OTP EPROM program memory at 3.5KB (2K x 14) is one-time programmable - once programmed, it cannot be erased, making the PIC16C72A suitable for production volumes where the cost of flash is unnecessary and the device will not require firmware updates. Typical applications include industrial control systems, automotive subsystems, consumer electronics, sensor interface modules, and low-to-medium complexity embedded control tasks that benefit from the ADC for analog signal acquisition. The 28-SOIC footprint also supports hand-soldering and standard SMT assembly lines. When designing with this device, ensure the supply voltage stays within the 4.0V to 5.5V operating range; operation below 4.0V may cause EPROM read errors. Decouple VDD/VSS with a 0.1 uF ceramic capacitor placed within 5 mm of the pins, and reserve the MCLR pin for a proper reset circuit with the appropriate pull-up. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design considerations not found in the manufacturer datasheet alone.

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PIC16C72AT-04E/SS - 8-bit 4MHz OTP MCU 3.5KB | Microchip
PIC16C72AT-04E/SS

PIC16C72AT-04E/SS - 8-bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16C72AT-04E/SS is an 8-bit CMOS microcontroller in the PIC16C family, featuring 3.5KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and a 4MHz internal operating frequency, housed in a 28-pin SSOP package with tape-and-reel packaging. The device operates from a 4V to 5.5V supply and integrates peripherals including a 5-channel 8-bit A/D converter, PWM module, Brown-out Reset (BOR), Power-On Reset (POR), Watchdog Timer (WDT), and two 8-bit timers plus one 16-bit timer. An 8-bit PIC microcontroller is a Harvard-architecture RISC device optimized for embedded control. In the broader hierarchy, PIC16C sits within the PICmicro mid-range family, which itself belongs to the 8-bit microcontroller category, itself a sub-class of microcontrollers, embedded processors, and ultimately semiconductors. The OTP program memory means each device can be programmed once, suiting low-to-medium volume production where firmware is finalized and field updates are not anticipated. Key features of the PIC16C72AT-04E/SS include the high-performance RISC CPU with only 35 single-word instructions to learn, all single-cycle except program branches (which take two cycles), 22 general-purpose digital I/O pins, and the integrated A/D converter that eliminates the need for an external ADC chip in sensor-interface designs. The 4MHz maximum clock input provides a 1 microsecond instruction cycle time, balancing throughput against power consumption in cost-sensitive applications. The device uses a 14-bit instruction word and 8-bit data path, with a 200 ns minimum instruction cycle at 20 MHz. The PIC16C72A family supports both internal and external oscillator modes and offers in-circuit serial programming (ICSP) via two dedicated pins, simplifying manufacturing test and reducing programming socket cost. Typical applications include appliance control, sensor signal conditioning with on-chip A/D conversion, automotive body electronics (sub-systems), HVAC thermostat control, and low-cost industrial monitoring. The combination of integrated A/D, PWM, and 22 I/O pins allows a single PIC16C72AT-04E/SS to replace multiple discrete components. When designing with this device, allocate adequate decoupling (typically 0.1 uF ceramic per VDD pin) and ensure MCLR pin handling follows Microchip application notes for in-circuit serial programming compatibility. Brown-out reset configuration must be matched to the application's minimum operating voltage to avoid unintended resets during supply droop. This page synthesizes the Microchip datasheet, current distributor pricing across DigiKey and Octopart, and drop-in same-package alternatives from the PIC16C72 family tree, providing context not found in the datasheet alone.

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PIC16C72AT-04I/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
PIC16C72AT-04I/SO

PIC16C72AT-04I/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip

The Microchip PIC16C72AT-04I/SO is an 8-bit CMOS OTP-based microcontroller in the PIC16C family, featuring a 4 MHz maximum clock input, 3.5 KB (2K x 14) of one-time-programmable (OTP) program memory, 128 bytes of RAM, 22 digital I/O lines, and a 5-channel 8-bit analog-to-digital converter (ADC). It is housed in a 28-pin SOIC wide-body package and operates from a single 4.0 V to 5.5 V supply. The part carries the "I" industrial temperature grade (-40 °C to +85 °C) and the "04" speed suffix denoting the 4 MHz oscillator grade. The trailing "T" indicates Tape and Reel packaging. An 8-bit OTP microcontroller (one-time-programmable microcontroller) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (here OTP EPROM), and peripherals on one die. OTP sits in the memory hierarchy below Flash and below mask-ROM: each cell can be programmed once by the user using a standard EPROM programmer, but cannot be electrically erased, making OTP parts cheaper than Flash for low-volume and mature products while still allowing code customization. Within the broader microcontroller taxonomy, the PIC16C72A belongs to Microchip's mid-range 8-bit PIC architecture (8-bit MCU -> mid-range MCU -> PIC16 family -> peripheral-rich PIC16C7x sub-family). Key features include 35 single-word instructions, all executing in one instruction cycle except program branches which take two cycles, giving an instruction execution time of 200 ns at 20 MHz clock input (the part is rated for 4 MHz at this speed grade but the silicon supports up to 20 MHz on the -20 grade). Peripherals include two 8-bit timers and one 16-bit timer/counter with capture/compare/PWM (CCP) module, a synchronous serial port (SSP) supporting SPI and I²C, and a USART for asynchronous serial communication. The 22 I/O pins are bidirectional with individually programmable direction. Typical applications include industrial control, appliance control, low-end sensor interfacing, and legacy embedded systems where the OTP memory cost advantage outweighs in-field reprogramming requirements. The 5-channel 8-bit ADC makes it suitable for simple analog monitoring tasks. When designing with this part, verify the OTP memory constraint: code cannot be updated in the field. For prototypes or field-updatable designs, choose the Flash-based PIC16F72 equivalent. Programming requires a Microchip MPLAB-compatible device programmer supporting PIC16C OTP devices. This page synthesizes distributor pricing, drop-in alternatives from the PIC16C7x family, and practical design notes not found in the standalone datasheet.

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PIC16C72AT-20E/SO - 8-Bit 20MHz CMOS MCU | Microchip
PIC16C72AT-20E/SO

PIC16C72AT-20E/SO - 8-Bit 20MHz CMOS MCU | Microchip

The Microchip Technology PIC16C72AT-20E/SO is an 8-bit CMOS microcontroller in the PIC16C mid-range family, featuring a 20 MHz core, 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory, and 128 bytes of RAM, packaged in a 28-pin SOIC. It operates from 4.0 V to 5.5 V supply and integrates a 5-channel 8-bit ADC, USART, and two CCP modules. An 8-bit microcontroller is a single-chip computer built around an 8-bit data path that fetches, decodes, and executes instructions one byte at a time. PIC microcontrollers use a Harvard RISC architecture in which program and data memory live on separate buses, allowing instruction fetch and operand read to occur in the same cycle. The PIC16C mid-range family is positioned as a low-cost OTP/UVEPROM platform for embedded control, sitting above the baseline PIC16C5X in peripheral richness while remaining compatible with the PICmicro mid-range instruction set documented in DS33023. Key specifications include a 20 MHz clock input delivering 200 ns instruction cycle, 22 I/O pins, hardware USART, two Capture/Compare/PWM modules, an 8-bit A/D converter with five input channels, and a watchdog timer. Power-managed SLEEP mode draws typical standby current well below full-run levels, and the device includes an in-circuit serial programming interface plus the standard mid-range interrupt controller. The PIC16C72AT is implemented in Microchip's CMOS process with on-chip EPROM (erasable via windowed package) or OTP variants; the 'A' suffix denotes the enhanced revision of PIC16C72 with improved ADC and timer modules. The architecture provides 35 single-word instructions with single-cycle execution except for program branches, which take two cycles. Typical applications include appliance control, industrial instrumentation, low-end motor control, sensor interface modules, and general-purpose embedded control where a 5 V supply rail is available and code can be committed to OTP memory. It is also widely used as a migration path or as a budget drop-in for designs originally prototyped on windowed CERDIP parts. When designing with this device, verify that the OTP program memory size, 5-channel ADC count, and USART availability match your firmware requirements. Note that 'C' devices are OTP/UVEPROM rather than Flash; new designs targeting in-field reprogramming should consider PIC16F72 or PIC16F882 from the same pin-compatible footprint family. This page synthesizes distributor stock levels, drop-in PIC16C72 family alternatives, and practical design notes drawn from Microchip datasheet DS30262 and the PICmicro Mid-Range Reference Manual (DS33023) - context not aggregated on any single vendor page.

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PIC16C72AT-20E/SS - 20MHz 8-bit OTP MCU, 28-SSOP | Microchip
PIC16C72AT-20E/SS

PIC16C72AT-20E/SS - 20MHz 8-bit OTP MCU, 28-SSOP | Microchip

The Microchip Technology PIC16C72AT-20E/SS is an 8-bit PIC16C-series microcontroller featuring 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and 22 general-purpose I/O pins, all housed in a 28-pin SSOP surface-mount package. It operates at a maximum clock speed of 20 MHz (200 ns instruction cycle) from a 4.0 V to 5.5 V supply, and integrates a 5-channel 8-bit analog-to-digital converter (ADC) along with capture/compare/PWM and a USART module. An 8-bit PIC microcontroller (MCU) is a Harvard-architecture CMOS device that executes a compact, mostly single-cycle instruction set optimized for embedded control. Within Microchip's product tree, the PIC16C72A sits in the PIC16 mid-range family, which itself belongs to the broader 8-bit PIC microcontroller category and ultimately to the microcontroller branch of integrated circuits. OTP program memory allows one-time factory or field programming via a device programmer, making the part well-suited to production runs where flash reprogrammability is not required. Key features include 35 single-word instructions, all single-cycle except for program branches (2 cycles), four interrupt sources, an internal oscillator option, and a watchdog timer with its own on-chip RC oscillator. The 22 I/O pins each sink up to 25 mA and source up to 20 mA, allowing direct drive of LEDs and small relays without external drivers. The high-performance RISC CPU executes most instructions in 200 ns at 20 MHz, deterministic timing that simplifies real-time control loops. Typical applications include industrial automation and process control, appliance control boards, automotive body electronics (non-safety subsystems), sensor signal conditioning front-ends, and small consumer products. The wide operating temperature range (-40°C to +125°C for the 'E' industrial grade) and proven OTP silicon make it a reliable choice for mature designs. When designing with this device, ensure the MCLR reset circuit follows Microchip application note recommendations, and place a 0.1 µF decoupling capacitor within 6 mm of each VDD pin to suppress switching noise on the analog reference. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical engineering notes not found in the manufacturer datasheet - giving procurement and design engineers a one-stop engineering reference.

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