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PIC16C72T-10I/SS - 8-Bit 10MHz MCU, 3.5KB OTP, 28-SSOP | Microchip
PIC16C72T-10I/SS

PIC16C72T-10I/SS - 8-Bit 10MHz MCU, 3.5KB OTP, 28-SSOP | Microchip

The Microchip Technology PIC16C72T-10I/SS is an 8-bit PIC16C-series CMOS microcontroller with a 10 MHz core, 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and a 28-pin SSOP industrial-temperature package. The device integrates a multi-channel 8-bit A/D converter, capture/compare/PWM (CCP) modules, USART, and 22 digital I/O pins, providing a complete mid-range microcontroller solution for embedded designs. Background: An 8-bit microcontroller (MCU) is a programmable single-chip computer built around an 8-bit data path. Within the semiconductor taxonomy, the PIC16C72 sits under mid-range MCU -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC16C7X family adds integrated analog-to-digital conversion, positioning these parts between pure digital 8-bit MCUs (e.g., PIC16C5X) and higher-pin-count PIC17/PIC18 devices. This A/D-integrated positioning made the PIC16C72 popular for sensor-interface and motor-control designs in the late 1990s. Key features include: a Harvard-architecture RISC CPU with 35 single-word instructions (most single-cycle, branches two cycles), 10 MHz operating speed, 4.0-5.5V single-supply operation, two 8-bit timers plus one 16-bit timer, a synchronous/asynchronous USART, an 8-bit A/D converter with up to 5 input channels, 22 I/O pins with high-current sink/source capability, and industrial-temperature (-40C to +85C) qualification. The OTP memory model supports one-time field programming via standard device programmers. Technically, the PIC16C72 uses a 14-bit instruction word and an 8-bit data path, with separate program and data buses (Harvard architecture). The internal oscillator block supports crystal/ceramic resonator or external clock modes, and the integrated brown-out reset (BOR) circuit plus watchdog timer (WDT) provide robust field operation. CIP (core independent peripherals) on the CCP and USART blocks reduce CPU overhead, allowing deterministic timing in motor-control and serial-communication loops. Typical applications include industrial control panels, appliance controllers (washing machines, HVAC, microwave ovens), sensor-signal acquisition boards, low-end motor control, and embedded serial-portable instrumentation. The integrated A/D and PWM make the part well-suited to closed-loop control systems requiring both analog feedback and PWM drive. When designing with this MCU, ensure the 10 MHz oscillator margin accounts for temperature and aging. Add a 0.1 uF decoupling capacitor adjacent to each VDD/VSS pin pair, and reserve the MCLR/VPP pin for in-system programming via ICSP. Note that the PIC16C72 has been superseded by flash-based PIC16F72 and PIC16F882 variants for new designs; the PIC16C72T-10I/SS remains available for legacy and long-lifecycle products. This page combines the manufacturer datasheet, distributor stock/pricing, drop-in OTP and flash-based alternatives, and engineering design notes that go beyond the datasheet to accelerate board bring-up.

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PIC16C72T-20/SO - 8-bit 20MHz OTP MCU 3.5KB | Microchip
PIC16C72T-20/SO

PIC16C72T-20/SO - 8-bit 20MHz OTP MCU 3.5KB | Microchip

The Microchip PIC16C72T-20/SO is an 8-bit CMOS RISC microcontroller in the PIC16C7X mid-range family, delivering 20 MHz CPU performance with 3.5 KB (2K x 14) One-Time Programmable (OTP) program memory and 128 bytes of RAM in a 28-pin SOIC package. According to the Microchip PIC16C72 family datasheet, the device integrates a 5-channel 8-bit analog-to-digital converter, two capture/compare/PWM modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART, and 22 digital I/O lines - making it a true system-on-chip for embedded control. The PIC16C7X family belongs to the broader PIC mid-range architecture, a Harvard-style 8-bit RISC core that sits between baseline PIC10/12/16 devices and the high-end PIC18 family in Microchip's microcontroller taxonomy. With 35 single-word instructions, single-cycle execution on most opcodes, and a wide 4.0 V to 5.5 V supply range, the PIC16C72T-20/SO is engineered for cost-sensitive control applications where deterministic timing and low power are required. Key features include 20 MHz maximum clock for 200 ns instruction cycle, hardware multiply assist, 8-level deep hardware stack, programmable code protection, power-on reset, brown-out reset, watchdog timer with its own on-chip RC oscillator, and four oscillator options (XT, HS, RC, LP). The integrated 8-bit ADC supports up to 5 channels at conversion speeds suitable for slow process-variable monitoring, and the two CCP modules can independently drive PWM outputs or capture timing events on external signals. Typical applications span industrial sensor conditioning, motor speed control loops, HVAC damper and valve actuators, and consumer appliance front-panel controllers. The PIC16C72T-20/SO is supplied in tape-and-reel packaging for high-volume SMT assembly. When designing with this part, note that OTP memory requires one-pass programming - no firmware updates are possible once the bit cells are written. For field-reprogrammable designs, migrate to the pin-compatible flash-based PIC16F72-I/SO, which is recommended by Microchip as the modern functional replacement. The 28-pin SOIC footprint is also shared with PIC16C71X and PIC16C66 series, enabling easy board-level reuse. The 8-bit microcontroller category includes LDO regulators, ADC/DAC converters, and serial interface ICs as supporting analog functions in a typical embedded power tree; the PIC16C72T-20/SO is positioned as the digital brain for cost-sensitive control designs. This page synthesizes distributor pricing, drop-in same-package alternatives, and design guidance not found in the standalone manufacturer datasheet.

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PIC16C72T-20/SS - 20MHz 8-Bit PIC MCU, 3.5KB EPROM, 28-SSOP
PIC16C72T-20/SS

PIC16C72T-20/SS - 20MHz 8-Bit PIC MCU, 3.5KB EPROM, 28-SSOP

The Microchip Technology PIC16C72T-20/SS is a high-performance 8-bit CMOS RISC microcontroller with 3.5 KB EPROM program memory (2K x 14), 128 bytes of RAM, and 22 digital I/O pins, housed in a 28-pin SSOP surface-mount package supplied on tape and reel. The device integrates a 5-channel 8-bit A/D converter, one 8-bit and one 16-bit timer/counter, a synchronous serial port (SSP) supporting SPI and I2C, and a USART, delivering a complete peripheral mix in the PIC16CXX mid-range family. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral blocks (A/D converters, timers, communication controllers). MCUs are the foundational building blocks of embedded systems, found in everything from washing machines to industrial controllers. The PIC16C7X family specifically targets cost-sensitive applications requiring integrated analog: an 8-bit ADC, capture/compare/PWM, and serial connectivity, all in 28- and 40-pin packages. RISC architecture (Reduced Instruction Set Computer) means the CPU executes most instructions in a single clock cycle, achieving high throughput at moderate clock rates. Key features of the PIC16C72T-20/SS include 20 MHz maximum clock input (200 ns instruction cycle), 35 single-word instructions, an operating voltage of 2.5 V to 5.5 V, and an operating temperature range suitable for commercial (0 C to +70 C) use. The device supports in-circuit serial programming (ICSP) for field upgrades and uses OTP (one-time-programmable) EPROM technology for program memory, which is ideal for low- to mid-volume production. Architecturally, the PIC16C72 uses a Harvard-style memory map with separate program (14-bit wide) and data (8-bit wide) buses, a 2-level hardware stack, and 8 special-function registers mapped into the data memory. The integrated 8-bit ADC delivers a typical conversion time of 19.2 us at 20 MHz, and the USART supports asynchronous and synchronous serial communication at up to several hundred kbps. Typical applications include industrial control and monitoring (sensor interfacing, valve drivers), appliance control (consumer white goods with ADC inputs), automotive body electronics (when paired with the PIC16C72T-20I/SS industrial-temperature variant), instrumentation and data acquisition, and low-end motor control with PWM-driven H-bridges. The integrated A/D simplifies designs that would otherwise require an external ADC. When designing with this part, note that OTP memory cannot be erased, so the firmware must be fully validated before programming. For development, use the PIC16C72-20/SP (windowed ceramic DIP) or the PIC16F72 flash-based equivalent; the production programmer should use ICSP for fast factory programming. The 28-SSOP package has a modest thermal footprint suitable for commercial environments, but engineers should still follow standard decoupling guidelines (100 nF plus 10 uF near the supply pins). This page consolidates distributor pricing, drop-in SSOP-28 alternatives (including the flash-based PIC16F72 and the industrial-temperature PIC16C72T-20I/SS), and practical design notes that go beyond the manufacturer datasheet, so engineers can make a fast, informed selection.

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PIC16C72T-20E/SO - 8-Bit OTP MCU, 20MHz, 3.5KB | Microchip
PIC16C72T-20E/SO

PIC16C72T-20E/SO - 8-Bit OTP MCU, 20MHz, 3.5KB | Microchip

The Microchip Technology PIC16C72T-20E/SO is an 8-bit PIC mid-range microcontroller with 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory, 128 bytes of RAM, and a maximum clock speed of 20 MHz, housed in a 28-pin SOIC (7.50 mm width) tape-and-reel package with automotive temperature grade. An 8-bit OTP microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and peripherals. The 'OTP' suffix means the program memory can be written only once - it is mask-ROM-equivalent in cost but flash-free for low-to-mid volume production. Mid-range PIC MCUs sit in Microchip's product hierarchy below enhanced mid-range (PIC16F1xxx) and above baseline (PIC10/14/16x) families. OTP PIC16C parts target cost-optimised, high-volume automotive and industrial designs where code is finalised before production. The device features five 8-bit ADC channels, one 8-bit PWM/CCP channel, hardware I2C and SPI peripherals, a 22-strong I/O pinout, brown-out reset, power-on reset (POR), and a watchdog timer. With 35 single-word instructions (most single-cycle, branches two-cycle) and 8 hardware stack levels, the PIC16C72 line is intended for fast control loops in cost-sensitive products where deterministic execution is valued over raw MIPS. Operating from 4.0 V to 5.5 V across the -40°C to +125°C automotive range, the part dissipates typical 5 mA active / <1 µA standby. Integrated analog and digital peripherals allow direct interfacing of sensors, EEPROMs, and H-bridges without external glue logic, while CMOS static design yields near-zero standby power for always-on applications. Typical applications include automotive body controllers (window lifters, mirror controllers), HVAC damper actuators, security-system keypads, and small industrial sensor nodes. Choose this part when BOM cost dominates and code is stable - migrate to PIC16F72 or PIC16F882 for in-circuit reprogrammability. For layout, place a 0.1 µF decoupling capacitor within 5 mm of VDD/SS, keep the MCLR trace short to the ICSP header, and reserve a 4-pin header for programming. This page consolidates distributor pricing, drop-in same-package alternatives, and engineering design notes that are not present in the manufacturer datasheet.

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PIC16C72T-20I/SS - 8-Bit 20MHz MCU, 3.5KB OTP, 28-SSOP | Microchip
PIC16C72T-20I/SS

PIC16C72T-20I/SS - 8-Bit 20MHz MCU, 3.5KB OTP, 28-SSOP | Microchip

The Microchip Technology PIC16C72T-20I/SS is an 8-bit CMOS RISC microcontroller from the PIC16C7X mid-range family, integrating a 5-channel 8-bit analog-to-digital converter, 3.5 KB of one-time-programmable (OTP) program memory, and 128 bytes of RAM in a 28-pin SSOP (0.209 inch / 5.30 mm body width) surface-mount package on tape and reel. It operates from a 4.0 V to 5.5 V supply at a 20 MHz maximum clock rate, executes 35 single-word instructions (all single-cycle except program branches which take two cycles), and exposes 22 digital I/O lines plus a 5-channel 8-bit ADC, two 8-bit timers and one 16-bit timer, a synchronous serial port (SSP) supporting SPI and I2C, and a USART. An 8-bit microcontroller (MCU) is a small self-contained computer-on-a-chip that integrates a CPU, program memory, working RAM, and programmable peripherals on a single silicon die. The PIC16C7X family belongs to the mid-range taxonomy: 8-bit RISC core -> PIC mid-range -> Microchip PIC16C legacy family -> embedded microcontroller -> semiconductor IC. Mid-range PIC MCUs balance code density (14-bit wide instruction word), deterministic interrupt response, and rich peripheral integration for cost-sensitive embedded designs. Key features include 35 single-word instructions, 8-level deep hardware stack, four interrupt sources, power-on reset, power-up timer, oscillator start-up timer, watchdog timer with its own on-chip RC oscillator, brown-out reset, and in-circuit serial programming (ICSP) capability. The wide operating temperature range of -40 C to +85 C (industrial grade, indicated by the -I suffix) supports harsh-environment deployment without external thermal management. The PIC16C72 architecture combines a Harvard-style program/data memory split, an instruction pipeline, and a peripheral set tailored for real-time control. The 5-channel 8-bit ADC with selectable reference voltages, combined with the capture/compare/PWM module, allows direct interface to analog sensors and motor or lighting actuators while the synchronous serial port handles peripheral expansion to EEPROMs, sensors, or display drivers. Typical applications include appliance control, automotive body and chassis subsystems, industrial process control, uninterruptible power supplies, battery chargers, and consumer products such as washing machines, microwave ovens, and remote-keyless-entry transmitters. The on-chip ADC and PWM simplify sensor-and-actuator designs, while ICSP and in-circuit debugging accelerate field firmware updates. When designing with the PIC16C72T-20I/SS, ensure the input supply stays within 4.0 V to 5.5 V, and use the configuration bits to select the oscillator mode, watchdog enable, brown-out voltage threshold, and code protection. Place a 0.1 uF decoupling capacitor close to VDD/VSS, and keep the MCLR pin pulled high through a 10 kohm resistor unless an external reset is used. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement and engineering teams a one-stop reference for sourcing and qualifying the PIC16C72T-20I/SS.

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PIC16C73A-04/SP - 4MHz 8-bit OTP MCU 7KB | Microchip
PIC16C73A-04/SP

PIC16C73A-04/SP - 4MHz 8-bit OTP MCU 7KB | Microchip

The Microchip Technology PIC16C73A-04/SP is an 8-bit OTP-programmable CMOS microcontroller in the PIC16C7X mid-range family, supplied in a 28-pin SPDIP (SP) through-hole package with a 4 MHz maximum clock speed. It integrates 7 KB (4K x 14) of one-time-programmable program memory, 192 bytes of RAM, 22 digital I/O lines, and a multi-channel 8-bit A/D converter plus one 8-bit and two 8/16-bit timer/counter modules, all in a Harvard-architecture RISC core delivering 35 single-word instructions and 200 ns instruction cycle at 20 MHz (the -04 speed grade is the 4 MHz version). The device supports operating voltages from 4.0 V to 5.5 V with low-power consumption (15 µA typical at 5 V / 4 MHz, 1 µA standby at 3 V / 32 kHz), making it suited to commercial and industrial embedded designs. What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a non-flash device whose program memory is written once by the user (or factory) using a dedicated programmer, after which the code is permanent. OTP parts are positioned in the hierarchy: microcontroller -> 8-bit MCU -> OTP MCU -> mid-range PIC. Compared to flash-based MCUs they are lower cost per unit, while sharing the same peripheral set and pinout, which is why many PIC16C7X designs migrate to the PIC16F7X family when field updates are required. The PIC16C73A-04/SP key features include the integrated 5-channel 8-bit A/D converter, a USART with programmable baud-rate generator, MSSP module that supports both SPI and I2C, two PWM/capture/compare modules, and a programmable watchdog timer with on-chip RC oscillator for maximum reliability. Source/ink current of 25 mA per pin drives LEDs and small solenoids directly, eliminating external drivers in many circuits. The mid-range core has an 8-level hardware stack and supports 14-bit wide instructions, with separate program and data buses (Harvard) for deterministic single-cycle execution. Architecturally the device uses a RISC Harvard core with 35 instructions, an 8-bit data path, and a 14-bit program-memory bus. The -04 speed grade limits the oscillator input to 4 MHz and is intended for cost-sensitive or power-budget designs where the full 20 MHz performance is not required. The integrated brown-out reset and power-on reset circuitry reduce external component count, and the device supports In-Circuit Debugging (ICD) via two RB6/RB7 pins. Typical applications include industrial control, motor control (low-end DC brushed and small stepper), metering, IoT end-node sensor interfaces, low-power battery-backed instrumentation, and embedded automation. The PIC16C73A-04/SP is also widely used in legacy designs and educational platforms where OTP programming and 4 MHz operation are acceptable. When designing with this device, plan for OTP programming: code must be fully verified before the part is committed. Use Microchip's PICkit or MPLAB ICD tools for development on equivalent flash parts such as the PIC16F73 (pin-compatible drop-in replacement) and finalize firmware on the PIC16C73A for production. Ensure the supply rail stays inside 4.0 V to 5.5 V and provide adequate decoupling (0.1 µF + 10 µF) at VDD. This page synthesizes Microchip datasheet parameters, distributor stock data, drop-in same-family alternatives (PIC16C73B, PIC16F73), and design notes that are not collated in any single manufacturer document.

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PIC16C73A-04E/SP - 8-bit OTP MCU, 4MHz, 28-SPDIP | Microchip
PIC16C73A-04E/SP

PIC16C73A-04E/SP - 8-bit OTP MCU, 4MHz, 28-SPDIP | Microchip

The Microchip Technology PIC16C73A-04E/SP is an 8-bit CMOS one-time-programmable (OTP) microcontroller from the PIC16C7X family, operating up to 4 MHz in the 28-pin SPDIP package. According to the manufacturer datasheet, it integrates 7 KB of program memory (4K x 14 words), 192 bytes of RAM, 22 digital I/O lines, and a multi-channel 8-bit analog-to-digital (A/D) converter. The 'E' suffix denotes the Extended temperature range (-40C to +125C), and the 'SP' suffix specifies the 28-pin SPDIP (Skinny Plastic DIP) through-hole package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/OTP/Flash), data RAM, and peripherals such as timers, communication ports, and analog inputs. The PIC16C7X family belongs to Microchip's PIC16 mid-range architecture (Harvard RISC, 14-bit instruction word), positioned in the product hierarchy as: PIC10/12/16 baseline -> PIC16 mid-range -> PIC18 enhanced mid-range -> PIC32 32-bit MCU. These MCUs are favored for deterministic real-time control, low quiescent current, and easy in-circuit serial programming. Key features include a wide operating voltage range of 2.5 V to 6.0 V, 25 mA source/sink current per I/O, and ultra-low-power modes with 1 uA typical standby current at 3 V/32 kHz. The integrated A/D converter offers 8-bit resolution across up to 5 analog input channels, making the part suitable for mixed-signal embedded designs. Two 8-bit timer/counters plus one 16-bit timer/counter provide flexible event capture and PWM generation. The PIC16C73A-04E/SP uses a Harvard architecture with separate code and data buses, 14-bit-wide instructions, and a 200 ns instruction cycle at 4 MHz (4 MHz oscillator with a 4:1 internal divider). The CMOS process delivers low power with 15 uA active current at 5 V/4 MHz, enabling battery-backed designs. The OTP program memory is programmed once via Microchip's ICSP (In-Circuit Serial Programming) interface. Typical applications include appliance control panels, automotive body electronics (Extended temp grade), sensor signal conditioning with on-chip A/D, low-cost motor control via PWM, and remote sensor nodes. Its 5-channel 8-bit A/D and 22 I/Os handle small mixed-signal nodes without external ADC ICs. When designing, verify the OTP memory cannot be re-programmed; for prototype or field-upgradable designs, choose the flash-based PIC16F73 or PIC16C73B successor recommended by Microchip. Always include a 0.1 uF decoupling capacitor between VDD and VSS placed within 5 mm of the pins. This page synthesizes verified distributor pricing, same-family drop-in alternatives, and design notes not found on the manufacturer datasheet cover page. XAIPART recommends the PIC16C73A-04E/SP for new designs only when OTP memory is acceptable; otherwise, select the flash-based PIC16F73 successor.

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PIC16C73A-04I/SO - 8-bit OTP MCU, 4MHz, 7KB, 28-SOIC | Microchip
PIC16C73A-04I/SO

PIC16C73A-04I/SO - 8-bit OTP MCU, 4MHz, 7KB, 28-SOIC | Microchip

The Microchip Technology PIC16C73A-04I/SO is an 8-bit CMOS OTP-based microcontroller in the PIC16CXX mid-range family, offering 7KB (4K x 14) of program memory, 192 bytes of RAM, and 22 digital I/O lines, all packaged in a 28-pin SOIC (SO) wide-body outline. It operates from a 4V to 6.0V supply, runs at 4 MHz oscillator speed (the "-04" speed grade), supports the standard PIC mid-range instruction set (35 single-word instructions, all single-cycle except branches), and integrates a multi-channel 8-bit A/D converter plus a USART, SSP/SPI/I2C, and two 8-bit timers plus one 16-bit timer with CCP. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (here OTP EPROM), volatile data memory (RAM), peripherals, and I/O on one die. The PIC16C7X mid-range family was designed as low-cost, high-performance, fully-static CMOS MCUs for embedded control, and the PIC16C73A-04I/SO sits between the smaller PIC16C72 (28-pin) and the larger PIC16C74A/76/77 (40-pin) variants, sharing the same peripheral set so code can scale across packages. Key features of the PIC16C73A-04I/SO include 7KB of one-time-programmable (OTP) EPROM, 192 bytes of data RAM, 22 general-purpose I/O pins with 25 mA source/sink capability, an 8-channel 8-bit A/D converter, a USART for asynchronous/synchronous serial, an SSP module supporting SPI and I2C, and a 25 mA sink/source current suitable for driving LEDs and small relays directly. It also supports industrial temperature range (-40C to +85C) and a low-power standby current of approximately 1 uA typical at 3V/32 kHz. The PIC16C73A-04I/SO is built on a fully-static CMOS process, which means the clock can be stopped and the device held in its current state without losing register contents - useful for power-saving designs. The 4 MHz "-04" speed grade delivers 4 million instructions per second (Fosc/4) with a 1 us instruction cycle, and the wide operating voltage range (2.5V to 6.0V for the broader family, 4V to 5.5V for this industrial-temperature grade) makes it suitable for 5V industrial buses. Typical applications include industrial control panels, sensor interface boards, motor-control front-ends (with the CCP module for PWM), low-cost consumer appliances, and embedded instrumentation. The integrated 8-bit ADC simplifies analog front-ends, while the USART enables RS-232/RS-485 communication without an external transceiver IC for short-distance links. When designing with this part, note that OTP (one-time-programmable) memory cannot be erased or rewritten - use the PIC16F73 (Flash) or PIC16C73B (improved revision) for development or any application requiring firmware updates in the field. The "I" suffix denotes the industrial temperature range (-40C to +85C); the "SO" suffix indicates 28-pin SOIC packaging. This page synthesizes distributor stock and pricing, same-package drop-in alternatives including newer revision and Flash-based variants, and practical design notes not collected in any single source.

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PIC16C73A-04I/SP - 8-Bit 4MHz OTP MCU 7KB | Microchip
PIC16C73A-04I/SP

PIC16C73A-04I/SP - 8-Bit 4MHz OTP MCU 7KB | Microchip

The Microchip PIC16C73A-04I/SP is an 8-bit CMOS microcontroller based on the PIC16 mid-range RISC core, offering 7KB (4K x 14) of one-time programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O pins in a 28-pin SPDIP package. It operates at 4 MHz with a 200 ns instruction cycle, supports an industrial temperature range of -40C to +85C, and integrates a 5-channel 8-bit Analog-to-Digital Converter (ADC), one Capture/Compare/PWM (CCP) module, a USART, and a synchronous serial port (SSP) for SPI/I2C. A microcontroller (MCU) is a single-chip computer containing a CPU, memory (program + data), and programmable I/O peripherals. The PIC16C73A belongs to the PIC16CXX mid-range family, which uses a Harvard architecture with separate program and data buses, an accumulator-based ALU, and a compact 35-instruction instruction set where most instructions execute in a single 200 ns cycle at 4 MHz. This category sits below 16-bit and 32-bit MCUs in capability but excels in deterministic real-time control with very low cost. Key features include 4 MHz maximum clock speed, 5 MIPS throughput, 25 mA source/sink current per I/O, integrated brown-out reset, power-on reset, watchdog timer with its own on-chip RC oscillator, and an EPROM-based program memory that allows windowed erasure for prototype iteration. The 'A' revision improved ADC accuracy and added the enhanced CCP module compared to the original PIC16C73. The architecture uses a 14-bit instruction word and an 8-bit data path, with separate program and data buses preventing pipeline stalls. The integrated 8-bit ADC achieves 8-bit resolution across up to 5 input channels with conversion completed by successive approximation. The device operates over a 2.5V to 6.0V supply range with typical 5V/4 MHz active current of 15 uA, demonstrating CMOS-class low power for industrial embedded designs. Typical applications include industrial control systems, automotive body electronics, sensor signal conditioning, motor drive interfaces, and consumer appliance controllers. The integrated ADC and CCP module make the PIC16C73A well suited for closed-loop analog control such as temperature regulation, fan speed control, and battery charging. When designing with this OTP device, consider that program memory is one-time programmable and cannot be erased in-circuit; for in-system reprogrammability, consider the pin-compatible PIC16F73 with Flash memory. The I suffix denotes industrial temperature grade (-40C to +85C), and the SP suffix denotes 28-pin SPDIP through-hole package. This page synthesizes distributor pricing, drop-in alternatives within the PIC16C7x family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C73A-10/SO - 8-Bit OTP MCU 7KB 22 I/O SOIC-28 | Microchip
PIC16C73A-10/SO

PIC16C73A-10/SO - 8-Bit OTP MCU 7KB 22 I/O SOIC-28 | Microchip

The Microchip Technology PIC16C73A-10/SO is a 8-bit CMOS microcontroller from the PIC16C7X mid-range family, integrating 7KB (4K x 14) of One-Time-Programmable (OTP) program memory and 192 bytes of RAM in a 28-pin SOIC package. It operates up to 10 MHz with a 4V to 5.5V supply range, exposing 22 digital I/O lines and a 5-channel 8-bit Analog-to-Digital Converter (ADC) for mixed-signal embedded designs. The -10 speed grade corresponds to a 10 MHz oscillator, supporting instruction cycle times of 400 ns with a 4:1 clock divider. An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, optimized for control-oriented tasks in embedded systems. Within the broader taxonomy, the PIC16C73A belongs to the mid-range PIC16 family (8-bit MCU -> microcontroller -> MCU -> embedded processor -> semiconductor). It sits between low-pin PIC10/12 devices and high-performance PIC18 parts, balancing code density, peripheral integration, and cost. CMOS process technology delivers the low standby current (under 1 uA typical at 3V/32 kHz) that defines Microchip's nanoWatt-class PIC legacy. Key features include the Harvard RISC architecture with only 35 single-word instructions, 14-bit wide instruction word, 8-bit data path, and 25 mA source/sink current on digital I/O capable of directly driving LEDs and small relays. The integrated ADC and capture/compare/PWM modules enable motor-control, sensor-conditioning, and lighting applications without external analog ICs. The OTP memory allows one-time field programming, lowering unit cost versus windowed or flash versions. Typical applications span industrial control panels, automotive body electronics, appliance control boards, sensor signal conditioning, and low-cost consumer devices where integrated ADC simplifies BOM. The wide commercial/industrial/extended temperature range supports harsh-environment deployments. Designers migrating from PIC16C73A are advised to evaluate PIC16C73B (drop-in successor) or PIC16F73 (flash-based alternative) per Microchip's official guidance. When designing with this part, ensure oscillator stability at 10 MHz with appropriate load capacitors, and observe the maximum source/sink current per pin (25 mA) and per-port aggregate limits specified in the manufacturer datasheet. Brown-out and watchdog features are not integrated on this OTP revision; external supervisory ICs may be required for safety-critical applications. This page synthesizes real-time distributor pricing (LCSC, DigiKey, Heisener, Octopart), Microchip-recommended drop-in alternatives (PIC16C73B, PIC16F73), and engineering-oriented design notes not collated on any single datasheet or distributor page.

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PIC16C73A-10/SP - 8-Bit 10MHz 7KB OTP MCU 28-SPDIP | Microchip
PIC16C73A-10/SP

PIC16C73A-10/SP - 8-Bit 10MHz 7KB OTP MCU 28-SPDIP | Microchip

The Microchip PIC16C73A-10/SP is an 8-bit CMOS RISC microcontroller with integrated Analog-to-Digital Converter, packaged in a 28-pin SPDIP (Skinny Plastic DIP) through-hole format. It delivers 10 MHz maximum clock speed with 7 KB (4K x 14) of OTP (One-Time-Programmable) program memory and 192 bytes of data RAM, providing 22 digital I/O pins, three timers, a USART, an SSP, and a 5-channel 8-bit ADC. An 8-bit microcontroller is a single-chip computer built around an 8-bit data bus and a Harvard architecture. Within the broader semiconductor taxonomy it sits under microcontroller -> MCU -> embedded processor -> semiconductor device. The PIC16CXX mid-range family from Microchip is one of the longest-lived 8-bit architectures in the industry and is widely used in industrial control, automotive body electronics, and consumer appliances where deterministic instruction timing and low cost outweigh raw compute throughput. Key features of the PIC16C73A-10/SP include 35 single-word instructions, all single-cycle except program branches (two cycles), 5 MIPS sustained throughput at 20 MHz, supply voltage range of 4.0 V to 5.5 V, and low-power consumption with typical 15 µA active current at 5 V/4 MHz and 1 µA standby at 3 V/32 kHz. The device supports high sink/source current of 25 mA per pin and operates across commercial, industrial, and extended temperature ranges. Interrupt handling, watchdog timer, and power-on reset are all integrated. The PIC16C73A employs a RISC architecture with a two-stage pipeline and a 14-bit wide instruction word. The 8-bit ALU operates on data RAM, while the program store is accessed over a separate 14-bit bus, allowing instruction fetch and data access in the same cycle. This Harvard topology, combined with the 35-instruction RISC set, gives the part its deterministic 200 ns instruction cycle time at 20 MHz. The integrated ADC uses successive-approximation with analog input multiplexing across 5 channels. Typical applications include industrial control and automation, HVAC and building controls, automotive body and chassis subsystems, low-end consumer appliances, sensor signal conditioning front-ends, and battery-powered instrumentation. The wide operating voltage range and industrial temperature grade make it well suited to factory floor deployments. When designing with this device, note that the OTP memory cannot be re-programmed, so production firmware must be fully validated before wafer programming. The /MCLR reset pin requires a precise RC rise time, and the ICSP interface shares pins with PORTC, so isolation resistors may be needed in-circuit. This page synthesizes current distributor pricing, drop-in alternatives drawn from the Microchip PIC16C7X family, and practical design notes not found in the manufacturer datasheet.

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PIC16C73A-10E/SO - 8-bit OTP MCU 7KB EPROM 10MHz | Microchip
PIC16C73A-10E/SO

PIC16C73A-10E/SO - 8-bit OTP MCU 7KB EPROM 10MHz | Microchip

The Microchip Technology PIC16C73A-10E/SO is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family with integrated 10-bit Analog-to-Digital converter, 7KB (4K x 14) One-Time Programmable EPROM program memory, 192 bytes of user RAM, and 22 digital I/O lines, all housed in a 28-pin SOIC (SO) wide-body package. The "-10E" suffix denotes a 10 MHz maximum operating frequency and the "E" (Extended) temperature grade covering -40C to +125C, while "/SO" specifies the plastic small-outline gull-wing package shipped in tube packaging. A PIC16CXX mid-range 8-bit microcontroller is a Harvard-architecture RISC device that executes one instruction per instruction cycle (4 clock periods) and supports 35 single-word instructions, which together provide up to 5 MIPS performance at 20 MHz. It belongs to the broader hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC16 family -> PIC16C7x sub-family, and is commonly used as a drop-in classic-PIC platform for embedded control where program memory can be one-time-programmed at production time rather than re-flashed in the field. Key features include a 10 MHz oscillator (10 MIPS class core speed), an integrated multi-channel 10-bit ADC, three timer modules (Timer0, Timer1, Timer2), a synchronous/asynchronous USART, an SSP/SPI/I2C peripheral, five channels of 8-bit PWM (CCP module), and interrupt capability with both edge-selectable external interrupts and peripheral interrupts. The device operates from 2.5 V to 6.0 V, supporting 25/25 mA sink/source current per I/O, 15 µA typical standby at 5 V / 4 MHz, and 1 µA typical standby at 3 V / 32 kHz. The EPROM-based architecture requires a quartz windowed package (CERQUAD) for erasure; the SOIC version is therefore intended for one-time-programmed production units. Typical applications span industrial process controllers, automotive body/comfort electronics, sensor-signal conditioning front-ends, and appliance control boards, where the integrated ADC and PWM peripherals reduce external component count. Because the PIC16C73A is EPROM-based and superseded by the flash-based PIC16F73/PIC16C73B, Microchip's official product page recommends PIC16C73B or PIC16F73 for new designs.

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PIC16C73A-10I/SO - 8-Bit 10MHz OTP MCU 7KB | Microchip
PIC16C73A-10I/SO

PIC16C73A-10I/SO - 8-Bit 10MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C73A-10I/SO is an 8-bit CMOS RISC microcontroller from the PIC16C7X family, featuring 7KB (4K x 14) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O lines, all integrated in a 28-pin SOIC (SO) package. It operates at a 10MHz clock speed and supports a supply voltage range of 4.0V to 6.0V with industrial-grade temperature tolerance (-40C to +85C), as indicated by the "I" suffix in its part number. A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable I/O peripherals. The PIC16C7X family is part of the PIC16CXX mid-range architecture, which combines 35 single-word instructions with Harvard-bus architecture (separate program and data buses). This split-bus design lets the CPU fetch an instruction and read data simultaneously, which is why most instructions execute in a single instruction cycle, except program branches which take two cycles. OTPs are programmed once with a device programmer and cannot be erased, making them a cost-effective choice for mature, stable production volumes. Key specifications include a 10MHz maximum oscillator frequency, an integrated 8-channel 8-bit Analog-to-Digital Converter (ADC) with 5 analog inputs multiplexed onto PORTA/PORTE, three timer modules (Timer0, Timer1, Timer2), a Universal Synchronous Asynchronous Receiver Transmitter (USART), a Capture/Compare/PWM (CCP) module, and 22 high-current I/O lines rated at 25 mA sink/source. The architecture uses a two-stage instruction pipeline with an 8-bit ALU and a 14-bit instruction word. Typical applications include industrial control, instrumentation, sensor signal conditioning, motor control loops, and embedded systems with analog sensing where the integrated ADC and USART minimize external component count. Microchip recommends considering PIC16C73B or PIC16F73 as newer functionally-compatible replacements for new designs, since the PIC16C73A is now in the mature/legacy phase of its product lifecycle. When designing with this part, plan OTP programming in the production flow because once programmed, parts cannot be erased or rewritten. Use the in-circuit serial programming (ICSP) interface and ensure programming voltage (VPP) timing meets Microchip's specification. The high-current I/O lines allow direct LED or small-signal relay drive without external buffers in many cases. This page synthesizes distributor pricing, lifecycle status, recommended drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, including a side-by-side comparison with PIC16C73A variants and PIC16C73B successors.

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PIC16C73A-20/SO - 8-bit 20MHz 7KB OTP MCU 28-SOIC | Microchip
PIC16C73A-20/SO

PIC16C73A-20/SO - 8-bit 20MHz 7KB OTP MCU 28-SOIC | Microchip

The Microchip Technology PIC16C73A-20/SO is an 8-bit CMOS microcontroller from the PIC16CXX mid-range family, featuring 7KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O lines, all integrated into a 28-pin SOIC (SO) package. It executes instructions at a 20 MHz clock rate with a 200 ns instruction cycle, delivering up to 5 MIPS of throughput from a high-performance RISC CPU that supports only 35 single-word instructions. An 8-bit microcontroller (MCU) is a programmable integrated circuit containing a CPU, memory, and peripherals on a single die. Within the broader taxonomy, an 8-bit MCU is a member of the microcontroller family, which itself is a subcategory of microcontrollers > microprocessors > semiconductors. The PIC16C73A belongs specifically to Microchip's mid-range PIC16CXXX architecture, which evolved into today's enhanced mid-range PIC16FXXX family. Compared with 16-bit and 32-bit MCUs, 8-bit parts like this one trade raw compute throughput for deterministic timing, low cost, and extreme code density in embedded control applications. Key specifications include an operating voltage range of 4.0V to 5.5V (with the industrial -I variant supporting 2.5V-6.0V), 8-channel 8-bit A/D converter, three timer modules (Timer0, Timer1, Timer2), a USART, and a synchronous serial port (SPI/I2C) configurable via the MSSP peripheral. The device supports typical operating currents below 2 mA at 5V/4 MHz and standby currents under 1 µA, making it suitable for power-sensitive embedded designs. Integrated peripherals replace external glue logic and reduce BOM cost in motor control, instrumentation, and consumer appliances. Architecturally, the PIC16C73A uses a Harvard memory structure with separate program and data buses, allowing instruction fetch and operand read to occur in the same cycle. The OTP EPROM-based program memory is one-shot programmable via a standard device programmer, providing flexibility for low- to mid-volume production. The part is specified for the commercial 0°C to +70°C range in the -20 version and the industrial -40°C to +85°C range in the -20I variant. Typical applications include industrial control systems, automotive body electronics, sensor signal conditioning, low-speed data acquisition, smart sensor hubs, and home appliance controllers. The integrated ADC, timers, and serial peripherals allow direct connection to analog sensors, keypad matrices, and communication buses without external ICs. When designing with this part, note that it has been superseded by the PIC16C73B and PIC16F73 (Flash-based) variants. New designs should generally migrate to the PIC16F73 or current PIC16F1xxx family for supply longevity. For existing designs with mature firmware, the PIC16C73A-20/SO remains a supported legacy part with active distributor inventory per Microchip's product page. This page synthesizes distributor pricing across DigiKey, Mouser, LCSC, Octopart and other channels, drop-in same-family Microchip alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single-source comparison for sourcing decisions.

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PIC16C73A-20/SP - 8-bit 20MHz MCU 7KB OTP 28-SPDIP | Microchip
PIC16C73A-20/SP

PIC16C73A-20/SP - 8-bit 20MHz MCU 7KB OTP 28-SPDIP | Microchip

The Microchip Technology PIC16C73A-20/SP is an 8-bit CMOS RISC microcontroller with integrated analog-to-digital converter, 7KB (4K x 14) OTP program memory, 192 bytes of RAM, and 22 I/O pins, operating at 20 MHz from a 4.0V to 5.5V supply, packaged in a 28-pin SPDIP (SP) through-hole windowed CERDIP variant. An 8-bit microcontroller (microcontroller IC) is a single-chip computer that integrates a CPU, memory, and peripherals. The PIC16C73A belongs to the PIC16C family, part of the PIC® mid-range microcontroller family, which itself falls under the broader category of microcontrollers -> microcomputer ICs -> embedded processors -> semiconductors. The PIC16C7X line was designed as low-cost, high-performance, fully-static CMOS 8-bit microcontrollers with on-chip ADC. Key features include a high-performance RISC CPU with only 35 single-word instructions, all single-cycle except program branches (two cycles), wide operating voltage range up to 6.0V, 25/25 mA high sink/source current on I/O pins, and very low power consumption (5 mA typical at 5V/4 MHz and 1 µA typical standby at 3V/32 kHz). The integrated 8-bit ADC and 22 I/O pins enable direct interfacing to analog sensors and digital peripherals. The device uses a Harvard architecture with separate program and data paths. The 7KB OTP (one-time programmable EPROM) memory holds firmware, while 192 bytes of RAM store volatile data. Three timer/counters, a synchronous serial port (SSP) for SPI/I2C, a USART, capture/compare/PWM module, and an 8-channel 8-bit ADC are integrated on-chip, reducing external component count. Typical applications include industrial control systems, automotive body electronics, motor control, sensor signal conditioning, and embedded control in appliances. The integrated ADC suits direct analog sensor interfaces, and the 22 I/O lines accommodate keyboards, displays, and relay drivers. When designing with this device, ensure OTP programming is performed before final assembly as the memory cannot be erased. For prototyping, the windowed CERDIP variant allows UV erasure. Decoupling capacitors of 0.1 µF near VDD and a bulk capacitor near the IC are recommended. Watchdog timer should be enabled for unattended reset recovery. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C73A-20E/SP - 8-Bit 20MHz 7KB OTP MCU 28-SPDIP | Microchip
PIC16C73A-20E/SP

PIC16C73A-20E/SP - 8-Bit 20MHz 7KB OTP MCU 28-SPDIP | Microchip

The Microchip Technology PIC16C73A-20E/SP is an 8-bit CMOS RISC microcontroller with 7 KB (4K x 14) one-time-programmable (OTP) EPROM program memory, 192 bytes of RAM, and 22 digital I/O lines, housed in a 28-pin SPDIP (SP) through-hole package. It executes most instructions in a single 200 ns cycle at 20 MHz (5 MIPS), supports a 4.0–5.5 V supply, and integrates a 5-channel 8-bit A/D converter plus a USART/SPI/I2C-compatible synchronous serial port. A PIC16C-series microcontroller is a member of Microchip's mid-range 8-bit MCU family, which sits below the enhanced PIC18 family and above the baseline PIC10/12/16 families in performance and peripheral integration. PIC16C devices use a RISC-like Harvard architecture with 14-bit wide program words and 8-bit data, and the 'C' suffix denotes EPROM (erasable windowed) or OTP program memory rather than flash. This integrated part is the PIC16C73A-20E/SP variant, which combines the 'A'-revision silicon with 20 MHz maximum clock and an industrial temperature grade (-40C to +125C). Key differentiating features include 35 single-word instructions (all single-cycle except branches), 8 hardware interrupt sources, a 4-word-deep hardware stack, power-saving SLEEP mode with Watchdog Timer wake-up, and a Capture/Compare/PWM (CCP) module. The device is engineered for deterministic real-time control where 5 MIPS sustained throughput and predictable interrupt latency simplify firmware development. Architecturally, the PIC16C73A uses an 8-bit ALU fed from a 14-bit instruction bus and a separate 8-bit data bus, with peripheral features accessed through a banked special-function register file. The 5-channel successive-approximation ADC delivers 8-bit resolution in approximately 19 us, and the USART can be configured for asynchronous or synchronous serial communication at up to 5 Mbps (synchronous). Typical applications include industrial automation control, automotive body electronics, sensor signal conditioning with on-chip ADC, appliance motor control via the CCP module, and consumer-product embedded controllers. The wide 4.0–5.5 V supply and -40C to +125C operating range allow deployment in harsh environments. When designing with this MCU, allocate adequate decoupling (100 nF + 10 uF) near VDD/AVDD/VSS/AVSS, configure the MCLR pin properly with the required 50 ns rise time, and reserve one capture/compare/PWM channel if closed-loop control is required. The EPROM (windowed/OTP) program memory means the die cannot be electrically erased; use a Flash-based PIC16F73 or PIC16C73B for in-system reprogramming during development. This page synthesizes distributor pricing across 8 sources, pin-compatible drop-in alternatives, and design notes that supplement the manufacturer datasheet with practical integration guidance.

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PIC16C73A-20I/SO - 8-Bit 20MHz OTP MCU, 7KB, 28-SOIC | Microchip
PIC16C73A-20I/SO

PIC16C73A-20I/SO - 8-Bit 20MHz OTP MCU, 7KB, 28-SOIC | Microchip

The Microchip Technology PIC16C73A-20I/SO is an 8-bit CMOS mid-range microcontroller built around the PIC16CXX architecture, featuring 7KB (4K x 14) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O lines. Housed in a 28-pin SOIC package, it executes instructions at a 20 MHz clock rate with a single-cycle instruction time of 200 ns, delivering up to 5 MIPS of throughput. The 'I' suffix denotes the industrial temperature grade (-40C to +85C), while the '20' speed grade supports up to 20 MHz operation at 4.0V to 5.5V VDD. A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (ROM/Flash/OTP), data memory (RAM), and configurable peripheral blocks such as timers, A/D converters, and communication interfaces. MCUs form the lowest tier of the embedded computing hierarchy - beneath microprocessors and SoCs - and are the workhorse of embedded control. PIC mid-range MCUs specifically target cost-sensitive 8-bit applications where deterministic instruction timing and low power are priorities. Key features of the PIC16C73A include 35 single-word instructions (all single-cycle except program branches which are two cycles), an integrated 8-channel 8-bit A/D converter, two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM (CCP) module, a synchronous serial port (SSP) supporting SPI and I2C, and a USART for asynchronous serial communication. The high sink/source current of 25/25 mA per I/O allows direct drive of LEDs and small relays, reducing external component count. The 5V, 4 MHz typical supply current of 15 uA and 3V, 32 kHz standby current of 1 uA support battery-backed designs. The device is fabricated in CMOS technology for fully-static operation, meaning the clock can be stopped and the internal state preserved - a feature useful for low-power sleep modes. The architecture uses a 14-bit wide instruction word with separate program and data buses (Harvard architecture), enabling simultaneous instruction fetch and data access. This separation is the key architectural advantage of the PIC family and is why PIC mid-range devices outperform many 8-bit competitors on raw MIPS-per-MHz. Typical applications include industrial control panels, sensor signal conditioning front-ends, appliance controllers, automotive body electronics (non-safety), HVAC thermostats, and consumer product logic replacement. The integrated A/D converter and USART make it particularly well-suited for bridge-sensor data acquisition nodes that must communicate back to a host controller. The PIC16C73A-20I/SO is OTP-based and intended for production-volume designs rather than prototyping - for field programming consider the PIC16F73 Flash-based successor. A key design consideration: OTP means the program memory is programmed once and cannot be erased. Engineers should validate firmware on a Flash equivalent (such as the PIC16F73) before committing to the OTP PIC16C73A for production. Ensure the brown-out reset voltage threshold is correctly configured for the 4.0-5.5V supply range. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in a single manufacturer datasheet, giving procurement and design engineers a single decision-ready reference.

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PIC16C73AT-04/SO - 4MHz 8-bit CMOS MCU 7KB OTP 28-SOIC | Microchip
PIC16C73AT-04/SO

PIC16C73AT-04/SO - 4MHz 8-bit CMOS MCU 7KB OTP 28-SOIC | Microchip

The Microchip Technology PIC16C73AT-04/SO is an 8-bit CMOS RISC microcontroller from the PIC16C7X family, delivering 4 MHz maximum clock speed with 7 KB (4K x 14 words) of One-Time Programmable (OTP) program memory and 192 bytes of data RAM, packaged in a 28-pin SOIC (SOP) gull-wing surface-mount format. The 'T' suffix indicates Tape & Reel packaging and the '-04' suffix specifies the 4 MHz speed grade. According to Microchip's PIC16C7X datasheet, this mid-range MCU integrates a built-in analog-to-digital (A/D) converter, making it a complete all-in-one solution for embedded designs that need both digital control and analog signal acquisition on a single chip. A microcontroller (MCU) is a single integrated package that combines a CPU core, program memory (ROM/OTP/Flash), data RAM, peripheral interfaces (timers, ADC, communication ports), and I/O pins on one die. Microcontrollers sit in the broader system hierarchy of embedded computing: microcontroller -> microprocessor -> CPU -> integrated circuit -> semiconductor. The PIC16C73A specifically belongs to the PIC16CXX mid-range family, a class of low-cost, high-performance, fully-static 8-bit microcontrollers introduced by Microchip in the 1990s that became a foundational element in thousands of industrial and consumer product designs. Key features include 22 I/O lines, Harvard architecture with separate program and data buses, a wide operating voltage range, low power consumption suitable for battery-powered systems, and on-chip peripherals such as timers, a synchronous/asynchronous serial port (USART), capture/compare/PWM modules, and a multi-channel 10-bit A/D converter. The 28-pin SOIC form factor makes it suitable for hand-soldering, prototype work, and compact production boards where through-hole DIP variants are too tall. The PIC16C73A's architecture uses a 14-bit instruction word with an 8-bit data path, allowing compact code density and a small instruction set (35 instructions total) that is easy to learn. The 192-byte RAM and 7 KB OTP program memory target small- to mid-size embedded applications. With 22 I/O pins and integrated peripherals, the device can directly drive displays, sensors, communication interfaces, and power-control signals without external glue logic. Typical applications include industrial control systems, automotive body electronics, appliance control boards, security and alarm systems, and instrumentation where 8-bit processing, integrated analog input, and 28-pin SOIC footprint are required. Designers frequently select this part for legacy product maintenance, cost-sensitive designs, and educational platforms that need a reliable OTP MCU with proven toolchain support (MPLAB). When designing with this part, note that OTP memory can be programmed only once and cannot be erased or rewritten - choose PIC16F73 (Flash-based) for designs that need firmware updates in production.

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PIC16C73AT-04E/SO - 8-Bit 4MHz OTP MCU 7KB | Microchip
PIC16C73AT-04E/SO

PIC16C73AT-04E/SO - 8-Bit 4MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C73AT-04E/SO is a CMOS, fully-static, 8-bit PIC16C-family microcontroller integrating 7KB (4K x 14) of One-Time Programmable (OTP) program memory and 192 x 8 bytes of user RAM, operating at up to 4 MHz from a 28-pin SOIC wide-body package (7.50 mm). The 'T' suffix denotes Tape & Reel packaging for high-volume automated assembly, while the '04E' speed grade targets the extended 4 MHz operating point. The device belongs to the PIC16C7X sub-family and is built around Microchip's enhanced mid-range RISC core with 35 single-word instructions. An 8-bit PIC microcontroller (MCU) is a single-chip computer built on Harvard architecture, where program and data memories use separate buses. The 'mid-range' PIC16C family sits between the baseline PIC10/12/16 families and the high-end PIC18 family, balancing instruction simplicity with peripherals. The OTP variant allows the program memory to be written once using an external programmer, suiting low-cost, moderate-volume production runs where field re-programmability is not required. Key features include 22 digital I/O pins, an integrated multi-channel 8-bit Analog-to-Digital Converter, three timer modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART, and a watchdog timer with on-chip RC oscillator. The core delivers 5 MIPS performance at 20 MHz equivalent throughput and operates across 2.5 V to 6.0 V supply range. CMOS fully-static design ensures that clock frequency can be reduced to DC without losing register contents, ideal for sleep-mode power management in battery-powered applications. The 'fully-static CMOS' architecture combines low power consumption with deterministic instruction execution. Each instruction cycle is four oscillator periods, giving predictable timing for real-time control loops. The 14-bit instruction word provides a wider opcode space than baseline PIC devices, supporting literal operations and direct branch instructions. Brown-out Reset, Power-on Reset, and the watchdog timer work together to recover from firmware faults or supply transients, critical for industrial and appliance environments. Typical applications include industrial control and sensor interfacing, automotive body electronics (pre-CAN-era subsystems), home appliances such as washing machines and microwave ovens, HVAC thermostats, motor control boards, and embedded data-acquisition systems. The integrated ADC eliminates the need for an external converter in many low-channel-count designs. When designing with this device, note that the OTP memory cannot be erased or rewritten, so firmware must be fully validated on a windowed or Flash equivalent before committing to OTP programming. A 1kΩ to 10kΩ pull-up on the MCLR pin is recommended, and decoupling capacitors must be placed within 1 cm of VDD/VSS for reliable operation. This page synthesizes distributor stock levels, pin-compatible alternatives, and design guidance not consolidated on the manufacturer datasheet, giving engineers faster decision support for both new designs and legacy maintenance.

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PIC16C73AT-04I/SO - 8-Bit 4MHz OTP MCU 7KB Flash | Microchip
PIC16C73AT-04I/SO

PIC16C73AT-04I/SO - 8-Bit 4MHz OTP MCU 7KB Flash | Microchip

The Microchip Technology PIC16C73AT-04I/SO is an 8-bit CMOS OTP (One-Time Programmable) microcontroller from the PIC16C7X mid-range family, operating at up to 4 MHz and delivering 7 KB of program memory organized as 4K x 14 words in a 28-pin SOIC (0.295-inch, 7.50 mm body width) package. It integrates 192 x 8 bytes of RAM, a 5-channel 8-bit Analog-to-Digital Converter, 22 digital I/O pins, and the classic PIC16CXX peripheral set including timers, Capture/Compare/PWM, USART, and synchronous serial port. What is a PIC mid-range 8-bit microcontroller? The PIC16CXX mid-range family is a Harvard-architecture RISC MCU family from Microchip Technology, characterized by a 14-bit instruction word, 8-bit data path, single accumulator (W) plus up to four banked file registers, and a deterministic instruction pipeline. The 16C sub-family is the OTP-only classic variant that preceded the flash-based 16F series, and remains in active production for legacy industrial and embedded designs where code is finalized and field re-programmability is not required. Key features of this PIC16C73AT-04I/SO include the integrated 5-channel 8-bit ADC that allows direct interface with analog sensors without an external ADC, the USART module for asynchronous serial communication, and the I2C/SPI-compatible Synchronous Serial Port (SSP). The 22 I/O pins are 5V-tolerant and can source/sink up to 25 mA each, supporting direct LED drive and small relay coils. Brown-out Reset, Power-on Reset, Watchdog Timer with on-chip RC oscillator, and In-Circuit Serial Programming (ICSP) round out the standard PIC16C7X feature set. The 28-SOIC industrial-temperature variant (-40C to +85C, indicated by the 'I' suffix) is housed in a 7.50 mm body width SOIC package, suitable for hand-soldered prototypes, low-volume production, and through-hole-friendly SMT assembly. The -04 speed grade limits the clock to 4 MHz maximum (10 MHz would be -10, 20 MHz would be -20), reducing EMI in noise-sensitive instrumentation. Typical applications include industrial control panels, motor driver front-ends (gate-driver sequencing and fault monitoring), instrumentation with local A/D conversion, legacy 5V embedded systems, automotive body controllers (non-safety), and consumer appliances. The integrated ADC and USART allow a single-chip solution for sensor reading and host communication. When designing with this device, mind the OTP memory limitation: code is committed at the final programming step and cannot be re-flashed. Use the 16F73 or 16F873A flash-based cousin for development phases. Ensure the MCLR pin has the correct decoupling and that the oscillator configuration bits match the crystal or resonator selected. This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Engineers evaluating PIC16C73AT-04I/SO for new designs should weigh the OTP constraint against the legacy 5V supply, integrated ADC, and proven PIC16C7X peripheral set.

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PIC16C73AT-10/SO - 8-bit RISC MCU, 7KB EPROM, 22 I/O, 20MHz SOIC-28
PIC16C73AT-10/SO

PIC16C73AT-10/SO - 8-bit RISC MCU, 7KB EPROM, 22 I/O, 20MHz SOIC-28

The Microchip Technology PIC16C73AT-10/SO is an 8-bit RISC CMOS microcontroller from the PIC16C7X family, featuring 7KB of UV-erasable program memory (EPROM/OTP), 192 bytes of RAM, and 22 digital I/O lines, housed in a 28-pin Small-Outline IC (SOIC/SOP) package. It executes most instructions in a single 200ns cycle at a 20MHz oscillator (10MHz instruction rate, indicated by the "-10" speed suffix), and operates from a 4.0V to 5.5V single supply. The device integrates a 5-channel 8-bit ADC, one 8-bit timer/counter, two 16-bit timers, a USART, and a synchronous serial port (SSP) for SPI/I2C peripherals. An 8-bit RISC microcontroller is a processor built on a Reduced Instruction Set Computer architecture with 8-bit data width, optimized for deterministic real-time control. Within the broader system taxonomy, the PIC16C73A sits in the category hierarchy: microcontroller -> embedded microcontroller -> 8-bit MCU -> RISC MCU -> CMOS MCU -> semiconductor. Compared with CISC architectures, RISC MCUs offer shorter instruction latencies and predictable cycle counts, making them well-suited for hard-real-time applications such as motor control, instrumentation, and sensor interfacing. Key differentiating features of the PIC16C73A include on-chip A/D conversion (eliminating external ADC chips), a hardware USART for asynchronous serial communication, and dual 16-bit timers with capture/compare/PWM (CCP/DSR) capability. The integrated peripheral set makes it suitable for embedded designs that previously required multiple discrete ICs. The "T" suffix denotes the tape-and-reel packaging option, and the "/SO" suffix designates the SOIC-28 wide-body footprint. Architecturally, the PIC16C73A employs a Harvard architecture with separate program and data buses, a 14-bit instruction word, and a two-stage pipeline for predictable instruction throughput. The Harvard split prevents data accesses from stalling instruction fetches, supporting the 200ns single-cycle execution. On-chip EPROM allows code development cycles via ultraviolet erasure and windowed packages, but in production a one-time-programmable (OTP) variant is typically used. Typical applications include industrial control systems, sensor interfacing with analog inputs, motor drive controllers, embedded serial communication nodes (RS-232/RS-485 bridges), and low-power instrumentation. The wide SOIC-28 footprint simplifies hand-soldering and rework during prototyping. Designers should ensure MCLR is properly handled (internal pull-up enabled via configuration bits) and that the in-circuit serial programming (ICSP) interface is reserved for firmware updates. This page consolidates distributor pricing, same-brand drop-in alternatives, and practical design guidance beyond what the manufacturer datasheet provides.

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PIC16C73AT-10I/SO - 8-Bit 10MHz OTP MCU 7KB | Microchip
PIC16C73AT-10I/SO

PIC16C73AT-10I/SO - 8-Bit 10MHz OTP MCU 7KB | Microchip

The Microchip Technology PIC16C73AT-10I/SO is an 8-bit CMOS RISC microcontroller from the PIC16C7X mid-range family, operating at 10 MHz with 7 KB (4K x 14) of One-Time Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O lines, housed in a 28-pin SOIC (SO) wide-body package supplied on Tape & Reel. The device integrates a multi-channel 8-bit A/D converter, synchronous/asynchronous serial port (USART/SCI), and capture/compare/PWM peripherals, addressing embedded control designs that previously required multiple discrete components. It executes most instructions in a single 200 ns cycle, giving true 10 MIPS throughput at 10 MHz oscillator frequency. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, working RAM, and configurable peripheral blocks. The PIC16C7X family is part of Microchip's mid-range architecture - one tier above the baseline 12-bit/14-bit instruction PIC16C5X family and below the enhanced 16-bit PIC17C/PIC18C families. Within the broader semiconductor taxonomy, the PIC16C73A sits in the 8-bit MCU segment, sharing its core with PIC16C7X siblings and offering the integrated ADC that distinguishes the 73A from the 72A and 74A flash siblings. Key features include a Harvard architecture with separate program and data buses, 8-level hardware stack, 14-bit wide instruction word, two 8-bit timers plus one 16-bit timer, watchdog timer with dedicated on-chip RC oscillator, power-on reset, brown-out reset, and in-circuit serial programming capability via the ICSP interface. The 28-pin SOIC package supports surface-mount assembly in industrial temperature grade (-40C to +85C), enabling factory automation and process control deployments where through-hole DIP is impractical. Typical applications include industrial control, motor drive, instrumentation, sensor signal conditioning, and white-goods control boards. The integrated 8-channel 8-bit ADC supports direct connection to analog front-end signals, eliminating an external converter IC and reducing BOM cost. For new designs Microchip recommends PIC16F73 (Flash) or PIC16C73B as the modern equivalent, but the PIC16C73AT-10I/SO remains in use across long-life industrial and legacy equipment maintenance. When designing with this part, note that OTP memory cannot be erased or rewritten; use the windowed PIC16C73A-10/P (ceramic DIP) for prototype development, then transition to the OTP/SOIC variant for production. Provide a 10 kohm pull-up on MCLR/Vpp and respect the 6 MHz minimum oscillator type for the -10 speed grade (10 MHz maximum).

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PIC16C73AT-20/SO - 8-Bit 20MHz 7KB OTP MCU | Microchip
PIC16C73AT-20/SO

PIC16C73AT-20/SO - 8-Bit 20MHz 7KB OTP MCU | Microchip

The Microchip Technology PIC16C73AT-20/SO is an 8-bit RISC microcontroller from the PIC16CXX mid-range family, offering 7KB (4K x 14) of One-Time-Programmable (OTP) EPROM program memory, 192 bytes of RAM, and 22 digital I/O pins. Housed in a 28-pin SOIC (SO) package supplied on tape and reel, it operates at up to 20 MHz (5 MIPS) and integrates a 5-channel 8-bit Analog-to-Digital Converter plus I2C, SPI, and UART/USART serial peripherals. Input supply range is 4V to 6V and the commercial temperature grade spans 0C to +70C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable peripheral blocks onto one silicon die. Within the broader taxonomy it is a microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC16C7X family specifically targets cost-sensitive embedded control where deterministic instruction execution, low external component count, and on-chip analog simplify board design. Key features include 35 single-word instructions, fully static CMOS architecture, an 8-level hardware stack, power-on reset, brown-out detection, watchdog timer with its own on-chip RC oscillator, and code protection. The integrated ADC eliminates an external converter in sensor-interface designs, while the three serial interfaces (USART, SSP for SPI/I2C) cover the majority of master/slave bus topologies used in industrial and consumer control. Architecturally the device uses a Harvard structure with separate 14-bit program and 8-bit data paths, enabling single-cycle instruction fetch and deterministic throughput. The OTP EPROM allows one-time programming using standard Microchip development tools, making this part suitable for production runs where in-system reprogrammability is not required. Typical applications include appliance control, HVAC fan and damper drivers, industrial sensor interfaces, automotive body modules (non-safety), consumer remote controls, and small UART/SPI gateway nodes. The wide 4-6V input range simplifies integration into 5V regulated rails. When designing with this part, reserve the brown-out and watchdog configuration bits at programming time and verify the chosen oscillator mode (XT/HS/RC) matches the external crystal or resonator. Because this is OTP, firmware revisions require a board respin; choose PIC16F73 for development flexibility or PIC16C73B for extended temperature.

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PIC16C73AT-20E/SO - 8-bit OTP MCU 7KB 22 I/O | Microchip
PIC16C73AT-20E/SO

PIC16C73AT-20E/SO - 8-bit OTP MCU 7KB 22 I/O | Microchip

The Microchip Technology PIC16C73AT-20E/SO is a high-performance, CMOS, fully-static 8-bit microcontroller with 7KB (4K x 14) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, and 22 digital I/O lines, housed in a 28-pin SOIC (SO) wide-body package with 0.295 inch / 7.50 mm width. It operates at up to 20 MHz clock speed from a 5 V supply and integrates a multi-channel 8-bit Analog-to-Digital (A/D) converter, making it part of Microchip's PIC16C7X mid-range family. An OTP (One-Time-Programmable) microcontroller is a type of embedded MCU whose program memory can be written only once and then permanently retains the code without a quartz window. Compared to UV-erasable EPROM MCUs, OTP variants are typically lower cost and ship in opaque plastic packages, while sharing the same instruction set and peripheral set. In the system hierarchy, the PIC16C73A sits under: microcontroller (MCU) -> 8-bit MCU -> mid-range MCU -> PIC16C family -> PIC16C7X sub-family -> embedded computing subsystem. Key features include Harvard RISC architecture with 35 single-cycle instructions (200 ns instruction cycle at 20 MHz), an integrated 8-bit A/D converter with multiple input channels, capture/compare/PWM (CCP) peripherals, a USART for serial communication, and a watchdog timer with on-chip RC oscillator for reliable operation. The device supports brown-out reset, power-on reset, and code protection features, providing robust embedded control. The PIC16C73AT-20E/SO utilizes a 14-bit instruction word and a separate 8-bit data path, allowing instruction fetch to occur in parallel with data access - the hallmark of the Harvard architecture. This design delivers deterministic single-cycle execution for most instructions and predictable real-time response, which is critical in motor control, instrumentation, and industrial automation loops. The 'E' suffix designates the extended industrial operating temperature grade (-40 °C to +125 °C), while the 'T' denotes tape-and-reel packaging and '20' denotes 20 MHz maximum clock frequency. Typical applications include industrial process control, automotive body electronics, motor control for small DC and brushless motors, sensor signal conditioning, instrument panels, and battery charging systems. The integrated A/D converter and PWM outputs enable direct interfacing with analog sensors and actuators without external glue logic. When designing with this device, note that OTP memory cannot be reprogrammed; for field-upgradable designs, consider the flash-based PIC16F73 family as a pin-compatible alternative. Decoupling capacitors must be placed within 1-2 cm of VDD/VSS pins, and unused I/O pins should be configured as outputs low or inputs with internal pull-ups to minimize power consumption. This page synthesizes verified distributor pricing, drop-in alternatives, and design notes that complement the manufacturer datasheet to help engineers make faster component-selection decisions.

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