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PIC16C58B-20I/SS - 8-Bit 20MHz OTP MCU, 3KB, 20-SSOP | Microchip
PIC16C58B-20I/SS

PIC16C58B-20I/SS - 8-Bit 20MHz OTP MCU, 3KB, 20-SSOP | Microchip

The Microchip Technology PIC16C58B-20I/SS is an 8-bit EPROM/OTP-based CMOS microcontroller from the PIC16C5X family, delivering 20 MHz CPU performance with 3 KB (2K x 12) of one-time-programmable program memory in a 20-pin SSOP (5.30 mm body) package. Its headline specifications are 20 MHz clock speed, 3 KB OTP program ROM, and 20 MHz instruction throughput, all housed in the industrial-temperature SSOP-20 footprint. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral I/O on one die, enabling compact embedded control in everything from appliances to industrial sensors. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers, then integrated circuits, then semiconductors. The PIC16C5X family implements a RISC architecture, executing each 12-bit instruction in a single cycle except for program branches, which take two cycles, providing deterministic timing that simplifies real-time firmware design. Key features of the PIC16C58B-20I/SS include 33 single-word single-cycle instructions, 7 to 8 special-function hardware registers, a two-level deep hardware call stack, direct/indirect/relative addressing modes for both data and instructions, an 8-bit real-time clock/counter (TMR0) with programmable prescaler, a Watchdog Timer with its own on-chip RC oscillator for reliable recovery, and an internal Power-on Reset circuit. The device operates from a 4.5 V to 5.5 V supply, supports 12 I/O pins, and provides programmable code protection to safeguard intellectual property. The 'I' suffix indicates an industrial temperature grade of -40 C to +85 C, while '20' denotes the 20 MHz maximum clock and 'SS' specifies the SSOP-20 package. The PIC16C58B uses a Harvard-style architecture with separate program and data buses, eliminating fetch/execute conflicts and supporting most instructions in a single 200 ns cycle at 20 MHz. Program memory is OTP (one-time programmable), optimized for low-to-mid volume production where flash reprogrammability is not required, allowing lower per-unit cost than equivalent flash parts in mature designs. The 32-byte RAM and 7 to 8 special-function registers provide a deliberately minimal footprint, ideal for compact state machines and cost-sensitive embedded products. Typical applications include appliance controllers, automotive body electronics, industrial sensor interfaces, smart-card and security peripherals, low-end consumer electronics, and battery chargers. The 20 MHz instruction throughput suits simple control loops, while the SSOP-20 footprint allows dense PCB layouts in space-constrained designs. When designing with this MCU, choose either an RC oscillator (lower cost) or a crystal/resonator (higher accuracy) based on timing requirements; the WDT should be enabled in any field-deployed product to recover from firmware faults. Code-protect bits should be set during production programming to prevent unauthorized ROM reads via windowed verification. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16C5X family, and practical design notes that complement, but do not replace, the official Microchip datasheet.

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PIC16C58B-40/P - 8-bit 40MHz 3KB OTP MCU 18-PDIP | Microchip
PIC16C58B-40/P

PIC16C58B-40/P - 8-bit 40MHz 3KB OTP MCU 18-PDIP | Microchip

The Microchip Technology PIC16C58B-40/P is an 8-bit RISC CMOS microcontroller belonging to the PIC16C5X family, delivering up to 40 MHz operation with 3 KB (2K x 12) of One-Time Programmable (OTP) program memory and 73 bytes of RAM in an 18-pin PDIP (0.300 inch, 7.62 mm) through-hole package. It features a fully static core, 33 single-word/single-cycle instructions, a 12-bit instruction word, and an 8-bit data path, executing most instructions in a single 100 ns instruction cycle at 40 MHz. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + RAM), and peripherals onto one silicon die, intended for embedded control tasks. Within the broader semiconductor taxonomy, a microcontroller sits under the umbrella of microprocessors, then integrated circuits, then semiconductors. PIC16C5X devices occupy the entry-level leaf of the PIC family tree, optimized for cost-sensitive, high-volume legacy and industrial control. The 'C' in PIC16C58B denotes CMOS EPROM/OTP technology, 'B' the silicon revision, and '40' the maximum clock frequency (40 MHz). The trailing '/P' indicates the plastic PDIP package. Key features include a 12-bit wide instruction set, Harvard architecture (separate program and data buses), 8-level hardware stack, 12 I/O pins, power-on reset, power-saving SLEEP mode, watchdog timer with dedicated on-chip RC oscillator, and a programmable code-protection mechanism. The 18-pin PDIP footprint offers breadboard-friendly prototyping and reliable socket-based field replacement, while the OTP memory suits small-to-medium production runs where in-system reprogrammability is not required. Typical applications include appliance controls, simple sensor interfaces, LED and relay drivers, battery chargers, and legacy replacement boards where deterministic single-cycle execution, 33-instruction simplicity, and long-term Microchip supply continuity are critical. The PIC16C58B-40/P supports commercial (0C to +70C) and industrial (-40C to +85C) temperature grades and runs from 2.5 V to 5.5 V across the family. When designing with this MCU, note that OTP requires programming at the contract manufacturer (CM) or with a development programmer before solder attach. Engineers migrating to a Flash-based equivalent should consider the PIC16F57 as a code- and pin-compatible migration path within the same 18-pin PDIP footprint.

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PIC16C58B-40/SO - 8-Bit 40MHz PIC MCU, 3KB OTP, 18-SOIC | Microchip
PIC16C58B-40/SO

PIC16C58B-40/SO - 8-Bit 40MHz PIC MCU, 3KB OTP, 18-SOIC | Microchip

The Microchip Technology PIC16C58B-40/SO is an 8-bit RISC PIC microcontroller based on the PIC16C core, featuring 3KB (2K x 12) One-Time-Programmable (OTP) EPROM program memory, 73 bytes of RAM, and 12 I/O pins, operating at up to 40 MHz from a 3.3V/5V supply in an 18-pin SOIC (SO) wide-body package. The device implements a RISC instruction set of 33 single-word, single-cycle instructions (program branches take two cycles), with all instructions fetched in a single instruction cycle for deterministic throughput. The 40 MHz clock speed and 200 ns instruction cycle provide an order-of-magnitude performance uplift over competing 8-bit CISC microcontrollers of its generation. An OTP-based 8-bit microcontroller is a member of the EPROM/ROM-based CMOS microcontroller category, sitting within the broader microcontroller (MCU) hierarchy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. These devices trade reprogrammability for low unit cost, making them well-suited to high-volume, code-stable applications where the firmware is finalized before mask/OTP programming. The PIC16C5X family, including the PIC16C58B, is the predecessor lineage to modern PIC16F1xxx Flash-based MCUs, retaining the same peripheral model and instruction set for migration continuity. Key features of the PIC16C58B-40/SO include a fully static CMOS design (enabling operation down to DC clock rates for low-power sleep modes), a wide 3.0V-5.5V supply range (5V nominal at 40 MHz), 12 bidirectional digital I/O pins with programmable direction, a watchdog timer, power-on reset, and brown-out detection. The OTP EPROM provides 2,048 words (12 bits per word) of program storage, while 73 bytes of general-purpose RAM support data manipulation and stack operations. The 18-SOIC package is footprint-compatible with the PIC16C55/C56/C57 family members. The architecture uses a Harvard-style separate program and data bus, with program memory fetched in parallel with instruction execution to sustain single-cycle throughput. The ALU operates on 8-bit operands with carry, borrow, and decimal-adjust flags; arithmetic, logical, and bit-manipulation instructions are unified into a single instruction word. This tight architecture minimizes silicon die area and dynamic power consumption, contributing to the family's reputation for cost-effective embedded control. Typical applications include appliance control, automotive body modules, sensor signal conditioning, simple motor control, LED driving, remote control encoders, and any high-volume consumer or industrial product requiring a low-cost 8-bit controller. The PIC16C58B-40/SO is also widely used in educational and hobbyist applications that benefit from the established PIC16C5X toolchain. Designers should note that the 40 MHz speed grade requires a 4.5V-5.5V supply; for 3.3V operation the slower speed grade variants (e.g., -04, -20) must be selected. This page synthesizes distributor pricing, drop-in package alternatives, and practical design considerations not found in the manufacturer datasheet alone.

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PIC16C58B-40/SS - 8-Bit 40MHz 3KB OTP MCU 20-SSOP | Microchip
PIC16C58B-40/SS

PIC16C58B-40/SS - 8-Bit 40MHz 3KB OTP MCU 20-SSOP | Microchip

The Microchip Technology PIC16C58B-40/SS is a member of the PIC16C5X family of low-cost, high-performance 8-bit fully-static EPROM-based CMOS microcontrollers housed in a 20-pin SSOP package. It operates from a single 4.5V to 5.5V supply, executes instructions at a 40 MHz clock rate, and integrates 3KB of one-time-programmable (OTP) program memory (2K x 12 words), 72 bytes of general-purpose RAM, and 12 dedicated I/O lines. According to the manufacturer datasheet, the device employs a RISC architecture with 33 single-word/single-cycle instructions, delivering 2:1 code compression over competing 8-bit MCUs in the same price class. An 8-bit OTP microcontroller is a single-chip computer whose non-volatile program memory can be written exactly once by an external programmer. It belongs to the broader category of microcontrollers (MCUs), which sit below microprocessors in the embedded system hierarchy because they integrate CPU, RAM, non-volatile memory, and peripherals on a single die. The PIC16C5X family targets cost-sensitive applications where small code size, deterministic execution, and minimal external components outweigh the need for in-system re-programmability. Key features include a 12-bit instruction word, an 8-bit data path, eight-bit timer/counter, watchdog timer with on-chip RC oscillator, power-on reset, brown-out detection, and an operating temperature range of 0C to +70C (commercial grade). The PIC16C58B-40/SS uses an OTP EPROM cell rather than flash, which is one reason this part is now in long-term support rather than new design. The RISC-style Harvard architecture separates program and data buses, allowing instruction fetch and operand read to occur in a single cycle. This gives the PIC16C58B-40/SS a 40 MHz (10 MIPS) throughput that is competitive with flash-based PIC16F1xxx parts, while the OTP EPROM cell yields a smaller die and lower unit cost. Program memory is 12 bits wide, while data RAM is 8 bits wide, which is the classic PIC16C5X footprint. Typical applications include consumer appliances, low-end remote controls, simple sensor interfaces, LED drivers, battery chargers, educational kits, and legacy industrial controllers that require deterministic behavior and small PCB area. The wide 4.5V to 5.5V supply range also suits 5V-rail automotive accessory and hobby electronics designs. When designing with this device, note that OTP memory requires a windowless package and a one-time-programmer; it cannot be re-flashed in-circuit. Engineers transitioning to a re-programmable flash-based PIC should consider the pin-compatible PIC16F57 / PIC16F59 family as the modern drop-in migration path.

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PIC16C58B/JW - 8-Bit 20MHz UV EPROM MCU 18-CERDIP | Microchip
PIC16C58B/JW

PIC16C58B/JW - 8-Bit 20MHz UV EPROM MCU 18-CERDIP | Microchip

The Microchip Technology PIC16C58B/JW is an 8-bit RISC microcontroller from the PIC16C5X family, delivering 20MHz operation with 3KB (2K x 12) of one-time-programmable / UV-erasable EPROM program memory, packaged in an 18-pin CERDIP windowed package for in-circuit reprogramming and development. It is built on a fully static CMOS process, providing 12 I/O lines, 73 bytes of RAM, and a 33-instruction RISC instruction set where every instruction executes in a single cycle (200ns at 20MHz). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral I/O into one IC. The PIC16C5X family occupies the entry-level tier of 8-bit microcontrollers, optimized for cost-sensitive, deterministic control tasks where simple I/O handling, low power, and small code footprints are paramount. These MCUs sit in the broader hierarchy of embedded computing as: microcontroller -> 8-bit MCU -> RISC MCU -> embedded processor -> semiconductor. The JW windowed CERDIP package distinguishes this part from the OT (one-time-programmable) CERDIP version by allowing UV erasure for repeated firmware development cycles. Key features include 8-bit data width, 20MHz maximum clock, 12 bidirectional digital I/O pins, a 2K x 12 program word organization, 8-bit timer/counter with 8-bit prescaler, watchdog timer with on-chip RC oscillator, power-on reset, and a 2.5V to 6.0V operating voltage range. The instruction set provides 33 single-word, single-cycle instructions, all executed in 200ns at 20MHz, simplifying code generation and timing analysis. Power-saving SLEEP mode reduces quiescent current to below 1 microampere for battery-friendly applications. Architecturally, the PIC16C5X uses a Harvard-style RISC core with a 12-bit program word and a separate 8-bit data path. The fully static CMOS design eliminates minimum clock rate restrictions, allowing the part to be clock-stepped for low-power or synchronous debugging. Code protection is supported via fuse bits, and the JW windowed package enables direct UV erasure of the EPROM, making this variant the preferred choice for engineering development, prototyping, and low-volume production where firmware iterations are expected. Typical applications include appliance controllers, HVAC damper and fan control, security keypads, sensor signal conditioning front-ends, automotive body-electronics nodes, battery chargers, simple remote-control transmitters, and educational microcontroller trainers. The PIC16C5X instruction set and pinout also make this part a drop-in-compatible base for legacy designs that began development in the early 1990s. When designing, reserve the 18-pin CERDIP window for a UV eraser lid if firmware changes are expected, and budget for a 73-byte RAM ceiling, which is sufficient for small state machines but constrains stack depth and buffer-heavy code. For a JW windowed part, plan a UV erasure station with a 12,000 uW-sec/cm² rated lamp and a 20-30 minute exposure time. A ceramic window sticker or opaque label must cover the window after programming to prevent data corruption from ambient light. This page synthesizes distributor pricing, verified drop-in compatible PIC16C5X alternatives, and design notes that complement the manufacturer datasheet.

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PIC16C58BT-04/SO - 4MHz 8-Bit EPROM MCU, 3KB OTP, 18-SOIC
PIC16C58BT-04/SO

PIC16C58BT-04/SO - 4MHz 8-Bit EPROM MCU, 3KB OTP, 18-SOIC

The Microchip Technology PIC16C58BT-04/SO is an 8-bit EPROM/OTP-based CMOS microcontroller belonging to the PIC16C5X family, packaged in an 18-pin SOIC (SO) wide-body outline and supplied on Tape & Reel. It combines a 3KB (2K x 12) One-Time-Programmable program memory, 73 bytes of data RAM, 12 digital I/O pins, and a maximum clock frequency of 4 MHz from an external oscillator source. Operating voltage is specified at 5V typical across the 3.0V to 5.5V supply range, with the device drawing microampere-level quiescent current in standby and full CMOS Run mode current during active instruction execution. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/EPROM/Flash), data memory (RAM), and peripheral I/O on one die. The PIC16C5X family is the lowest-cost member of Microchip's original 12-bit instruction-set PIC microcontrollers, targeting cost-sensitive embedded control applications where simple sequential logic replaces discrete components. The 4 MHz PIC16C58B executes one instruction per internal clock cycle (four oscillator clocks), giving approximately 1 MIPS performance - adequate for I/O scanning, timer-based control, and simple serial protocols but well below modern 8-bit Flash MCU speeds. The defining electrical feature of the PIC16C58B is its 33 single-word instructions with 12-bit-wide opcodes, providing the well-known 2:1 code compression advantage over competing 8-bit architectures of its era. Its fully static CMOS design allows the clock to be stopped for true zero-power wait states, and the 12 bidirectional I/O pins can source or sink up to 25 mA per pin - sufficient to drive LEDs, relays, and small solenoids directly without external transistors. The device includes an 8-bit real-time timer/counter with a programmable prescaler, a watchdog timer for reliable unattended operation, and a power-on reset circuit that holds the part in reset until VDD is stable. The PIC16C58B uses a RISC (Reduced Instruction Set Computer) Harvard architecture with separate program and data buses, eliminating the fetch-overlap bottleneck found in von-Neumann designs of the same vintage. EPROM-based program memory makes this part well suited for prototyping and low-to-medium volume production where Flash reprogrammability is not required, but where mask-ROM tooling NRE costs are prohibitive. The 18-pin SOIC footprint (0.300 inch / 7.50 mm wide body) is one of the most widely supported 8-bit MCU outlines, simplifying PCB layout and post-production re-programmability through a third-party EPROM eraser and programmer. Typical applications include appliance controllers, HVAC damper and fan control, automotive body electronics, simple sensor signal conditioning, security alarm keypads, and low-cost consumer products. Industrial designers use it for 4-20 mA loop-powered sensor transmitters, vending machine coin acceptors, and battery-backed utility metering where the 4 MHz MIPS budget is sufficient and EPROM one-time-programmability is acceptable. The wide operating temperature variants (I and E suffixes) make it viable for outdoor and automotive under-hood deployments. The PIC16C58B supports the standard PIC16C5X development toolchain including the PICSTART Plus programmer and MPLAB-SIM simulator; design verification on modern toolchains requires PICkit 3/4 with a 40-to-18-pin adapter. To ensure OTP programming yields, design with one or two unused I/O pins free, and route MCLR as a dedicated reset line separated from digital switching traces. Engineers migrating from PIC16C58B to current production should consider the flash-based PIC16F57 or PIC16F1825 in compatible packages. This page synthesizes distributor pricing, drop-in alternatives, parametric comparison, and practical design notes not found in the manufacturer datasheet.

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PIC16C58BT-04/SS - 8-Bit 4MHz OTP MCU 3KB 20-SSOP | Microchip
PIC16C58BT-04/SS

PIC16C58BT-04/SS - 8-Bit 4MHz OTP MCU 3KB 20-SSOP | Microchip

The Microchip Technology PIC16C58BT-04/SS is an 8-bit RISC microcontroller from the PIC16C5x family, featuring a 4 MHz maximum clock speed, 3 KB (2K x 12) of One-Time Programmable (OTP) program memory, and 73 bytes of RAM, housed in a 20-pin SSOP (Shrink Small Outline Package) with gull-wing leads. A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and programmable I/O peripherals. The PIC16C5x family is the original baseline of Microchip's PIC architecture, employing a Harvard RISC design with a 12-bit instruction word. These OTP MCUs target cost-sensitive, fixed-function embedded products where firmware is finalized at production time and field updates are not required. Key features include 12 I/O pins, a 2-level hardware stack, a watchdog timer for reliability, an 8-bit timer/counter, and an operating voltage range of 3.0V to 5.5V. The device supports internal RC oscillator modes plus external crystal/resonator, simplifying BOM cost by eliminating external clock components in space-constrained designs. Its commercial temperature grade (0°C to +70°C) makes it suitable for indoor consumer and office equipment. The PIC16C58B uses a 12-bit instruction set inherited from the original PIC16C5x baseline architecture. With only 33 single-cycle instructions and a 2-level deep hardware stack, it is optimized for simple state-machine replacement rather than complex multitasking. The OTP memory programming model requires a dedicated device programmer, and code security is enforced via a single protection fuse. Typical applications include remote controls, low-end appliance controllers, LED lighting controllers, simple sensor interfaces, and battery-powered consumer gadgets. The 4 MHz internal operation provides sufficient throughput for slow user-interface tasks while keeping active current low. When designing with this device, allocate sufficient board area for the SSOP-20 footprint and ensure the programming header is accessible during production. Note that the OTP variant cannot be re-programmed in-circuit - design with a socket-friendly land pattern if firmware iteration is anticipated during development. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. All parameters and pricing reflect publicly available data from authorized distributors as of 2026-09-17.

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PIC16C58BT-04E/SO - 8-bit 4MHz OTP MCU, 18-SOIC | Microchip
PIC16C58BT-04E/SO

PIC16C58BT-04E/SO - 8-bit 4MHz OTP MCU, 18-SOIC | Microchip

The Microchip Technology PIC16C58BT-04E/SO is an 8-bit, fully static, OTP (One-Time Programmable) CMOS microcontroller from the PIC16C5X family, featuring a 4MHz maximum operating frequency, 3KB of program memory organized as 2K x 12 wide instructions, and 73 bytes of RAM, all housed in an 18-pin SOIC (SO) gull-wing surface-mount package with a 7.50 mm body width. The "T" suffix denotes tape-and-reel packaging and "E" denotes the extended (-40C to +125C) automotive temperature grade, while "04" indicates the 4MHz speed grade. An OTP microcontroller (One-Time Programmable) is a class of non-volatile programmable logic device whose program memory can be written only once by the user (via an EPROM cell) after manufacture, in contrast to flash-based MCUs which allow thousands of erase/write cycles. OTP parts sit within the broader hierarchy: microcontroller -> embedded controller -> programmable logic -> semiconductor. PIC16C5X parts are well-known for their compact 12-bit-wide instruction set, RISC architecture, and very low cost, making them a foundational building block in the 8-bit MCU category alongside 8051 and AVR families. Key features include 12 I/O pins, a 33-instruction set, 2 hardware stack levels, an 8-bit timer/counter (TMR0) with an 8-bit prescaler, a watchdog timer with its own on-chip RC oscillator, power-on reset, power-saving SLEEP mode, and selectable oscillator options (RC, XT, HS, LP). The 4MHz speed grade translates to a 1 microsecond instruction cycle, and the wide instruction word delivers 2:1 code compression over competing 8-bit MCUs. Typical applications span industrial control, consumer electronics, automotive subsystems, and legacy embedded products that benefit from the low unit cost of OTP-based MCUs. The extended temperature grade (E) makes this part specifically suited to under-hood and other harsh-environment automotive designs. When designing with this device, note that OTP memory cannot be reprogrammed in-circuit; firmware bugs require physical part replacement. Use the ICD/ICSP header for development on a compatible windowed or flash-based PIC16C5X sibling before committing to OTP for production. This page synthesizes verified distributor pricing, drop-in PIC16C5X family alternatives, and practical design notes not aggregated on the manufacturer datasheet alone.

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PIC16C58BT-04E/SS - 8-Bit 4MHz OTP MCU 3KB | Microchip
PIC16C58BT-04E/SS

PIC16C58BT-04E/SS - 8-Bit 4MHz OTP MCU 3KB | Microchip

The Microchip Technology PIC16C58BT-04E/SS is an EPROM/ROM-based 8-bit CMOS microcontroller in the PIC® 16C5X family, delivering 4MHz maximum clock speed with 3KB (2K x 12) of One-Time Programmable (OTP) program memory in a 20-pin SSOP package. It is a low-cost, high-performance, fully static RISC device with 33 single-word/single-cycle instructions, providing 12 I/O pins, 73 bytes of RAM, an integrated Power-On Reset (POR), and a Watchdog Timer (WDT). An 8-bit microcontroller is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and I/O peripherals on one die. RISC (Reduced Instruction Set Computer) microcontrollers like the PIC16C5X family use a small, fixed-length instruction set — typically 33 to 35 instructions — where most instructions execute in a single clock cycle. This makes them far more deterministic and easier to program than CISC designs. In the broader system hierarchy, the PIC16C5X belongs to the microcontroller family, which sits within the embedded computing category of digital ICs, used everywhere from appliance controls to industrial sensors. Key features of the PIC16C58BT-04E/SS include: 2:1 code compression versus competing 8-bit MCUs, a wide operating voltage range, ultra-low power CMOS design, and an industrial temperature grade of -40°C to +125°C. The 4MHz oscillator, combined with 12-bit-wide instructions, yields compact code density. Its 20-pin SSOP package offers a small board footprint suitable for space-constrained designs, and the -04 speed variant specifies the 4MHz maximum frequency, while the 'E' suffix denotes the extended industrial temperature range. Technically, the PIC16C58B uses a Harvard architecture with separate program and data buses, allowing instruction fetch and data access in a single cycle. The 12-bit instruction word is the hallmark of the PIC16C5X baseline architecture, distinct from the 14-bit mid-range and 16-bit enhanced cores. With 73 bytes of general-purpose RAM and 12 digital I/O pins, the device targets simple control loops, user-interface logic, and glue-replacement tasks rather than high-throughput signal processing. Typical applications for the PIC16C58BT-04E/SS include appliance control (washing machines, microwaves, coffee makers), battery chargers, LED lighting controllers, simple sensor interfaces, and remote-control transmitters. Its OTP memory is suited to high-volume production where firmware is finalized and re-programming is unnecessary. The device is also commonly used in educational platforms and legacy industrial equipment retrofits. When designing with the PIC16C58BT-04E/SS, engineers should plan around the OTP memory constraint: firmware must be 100% verified before programming, as OTP parts cannot be re-flashed. The 4MHz limit and 2K x 12 program word count also bound the algorithmic complexity; tasks requiring floating-point math or large lookup tables may need the PIC16C55, PIC16C56, or PIC16C57 siblings with more program memory. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers and buyers make informed decisions about this mature PIC16C5X baseline MCU.

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PIC16C58BT-04I/SS - 4MHz 8-Bit OTP MCU, 3KB | Microchip
PIC16C58BT-04I/SS

PIC16C58BT-04I/SS - 4MHz 8-Bit OTP MCU, 3KB | Microchip

The Microchip Technology PIC16C58BT-04I/SS is an EPROM/ROM-based 8-bit CMOS microcontroller from the PIC16C5X family, featuring 3KB (2K x 12) of One-Time-Programmable (OTP) program memory, 73 bytes of RAM, and 12 I/O pins in a 20-pin SSOP package. It operates at a maximum clock speed of 4MHz across a 3.0V to 5.5V supply range and is built on a fully-static CMOS process. The device includes essential on-chip peripherals such as a Power-On Reset (POR), Watchdog Timer (WDT), and supports multiple external oscillator modes including RC, XT, LP, and HS configurations. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals. The PIC16C5X family belongs to the broader category of 8-bit microcontrollers within the embedded semiconductor hierarchy (MCU -> microcontroller -> embedded processor -> semiconductor IC). These devices target cost-sensitive, deterministic control applications where predictable interrupt latency and low power consumption are more important than raw computational throughput. OTP program memory is programmed once during production and cannot be erased, making the PIC16C58B family ideal for high-volume, fixed-function appliances where firmware is finalized at build time. Key differentiating features include the 12-bit instruction word architecture (giving 2K x 12 = 3KB program space), the Harvard bus architecture that allows simultaneous instruction and data fetches, and the industrial-grade -40C to +85C operating temperature range denoted by the I suffix. The 4MHz maximum clock combined with a 4-cycle-per-instruction timing yields a 1 MIPS instruction throughput. The device also features a 8-bit wide data path, 7 special-function hardware registers, and a 2-level hardware stack for subroutine nesting. Typical applications include consumer appliances, automotive body electronics (non-safety), remote controls, security sensor interfaces, low-end motor control, and battery-powered instrumentation. The PIC16C58B was historically used in keyboard encoders, infrared remote transmitters, and simple sensor signal conditioning circuits. When designing with this device, ensure your programmer supports the OTP windowed/standard programming algorithm and budget for the OTP-only limitation (no field reprogramming). For prototypes, consider the JW windowed ceramic package variant for UV-eraseable development cycles, then switch to PIC16C58BT-04I/SS for production. Decoupling capacitors of 0.1uF should be placed within 5mm of VDD, and unused I/O pins should be configured as outputs to minimize supply current. This page synthesizes distributor pricing (DigiKey, Octopart), drop-in alternatives including PIC16C58B-04I/SS and PIC16F506-I/SS, and practical design notes (POR timing, WDT configuration, oscillator selection) that complement the manufacturer datasheet for board-level integration planning.

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PIC16C58BT-20/SO - 8-Bit 20MHz OTP MCU 3KB | Microchip
PIC16C58BT-20/SO

PIC16C58BT-20/SO - 8-Bit 20MHz OTP MCU 3KB | Microchip

The Microchip Technology PIC16C58BT-20/SO is an 8-bit RISC microcontroller from the PIC16C5X family, featuring 3KB (2K x 12) of One-Time Programmable (OTP) program memory, 73 bytes of RAM, and a maximum clock speed of 20 MHz, housed in an 18-pin SOIC (SO) package with gull-wing leads. It belongs to the older commercial-grade PIC16C OTP lineup that combines RISC architecture with EPROM-based code storage for cost-sensitive embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and I/O peripherals. In the system hierarchy, it sits below 16-bit and 32-bit MCUs but above discrete logic ICs. OTP microcontrollers like the PIC16C58B are programmed once with the application code and cannot be re-flashed, making them a low-cost fit for high-volume, stable-firmware products where in-field updates are not required. Key features include 12 bidirectional I/O pins, a 12-bit instruction word optimized for compact code, an internal watchdog timer, power-on reset, and an operating voltage range of approximately 3.0V to 5.5V typical for the PIC16C5X family. The 20 MHz clock enables up to 5 MIPS throughput, and the device supports commercial temperature grade operation. OTP EPROM memory reduces per-unit cost versus flash parts, while the SOIC-18 package is suitable for automated surface-mount assembly on standard 300-mil boards. The PIC16C58B uses Microchip's classic 12-bit RISC core with a 33-instruction set, 2-level hardware stack, and Harvard architecture that separates program and data buses for deterministic instruction fetch. The device integrates 73 bytes of general-purpose RAM, 8-bit timer/counter, and an internal oscillator option depending on the configuration, providing sufficient peripherals for simple control tasks. Typical applications include appliance controllers, low-end remote controls, lighting ballasts, simple sensor signal conditioning, and other cost-sensitive embedded systems where deterministic 8-bit performance and OTP code storage are advantageous. The wide SO-18 footprint and Microchip's well-documented development toolchain (MPLAB, MPASM) accelerate time-to-market for engineers familiar with the PIC architecture. When designing with this device, ensure the ICSP programming interface is accessible before final board assembly because OTP memory cannot be re-programmed after packaging. Decoupling capacitors (typically 100 nF plus a bulk 10 uF) should be placed as close as possible to VDD and VSS pins to suppress switching noise. This page synthesizes distributor pricing, drop-in cross-family alternatives, and practical design notes not found in a standalone datasheet excerpt, helping engineers source and apply the PIC16C58BT-20/SO confidently.

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PIC16C58BT-20/SS - 8-Bit 20MHz 3KB OTP MCU | Microchip | SSOP-20
PIC16C58BT-20/SS

PIC16C58BT-20/SS - 8-Bit 20MHz 3KB OTP MCU | Microchip | SSOP-20

The Microchip Technology PIC16C58BT-20/SS is an 8-bit RISC EPROM/ROM-based CMOS microcontroller (MCU) featuring 3KB (2K x 12) of One-Time Programmable (OTP) program memory, 73 bytes of RAM, and a maximum operating frequency of 20MHz, housed in a 20-pin SSOP package with gull-wing leads. The part belongs to the PIC16C5X baseline family and operates from a 2.5V to 5.5V supply, delivering deterministic single-cycle instruction execution at up to 200ns per instruction. A microcontroller is a single-chip computer that integrates a CPU, program memory, working RAM, and peripheral I/O on one die. The 8-bit class targets cost-sensitive embedded control where deterministic timing and low power are valued over raw throughput; within that class the PIC16C5X family occupies the baseline tier, optimized for the smallest possible code size (12-bit instruction word) and the lowest unit cost. PIC microcontrollers sit inside the broader semiconductor hierarchy: MCU -> embedded processor -> digital IC -> semiconductor. Key features include 12 general-purpose digital I/O pins, an external oscillator interface (RC, XT, HS, LP modes), Power-On Reset (POR), Watchdog Timer (WDT), and a 3-deep hardware stack. The OTP memory allows one-time user programming for low-volume production, and the CMOS static design supports operation down to DC clock speeds. The 20-SSOP package offers a compact 0.65mm pitch footprint. Architecturally, the PIC16C58B uses a Harvard architecture with separate program and data buses, a 12-bit instruction word for code density, and a fully static core. The device has no integrated ADC, PWM, UART, or I2C peripherals, so connectivity is handled in software via bit-banged I/O. Power consumption is intrinsically low because unused peripherals draw zero current on the static CMOS design. Typical applications include low-cost consumer appliances, LED lighting controllers, remote-control transmitters, battery chargers, simple sensor interfaces, and industrial timers. The PIC16C58B is well suited to high-volume price-sensitive designs where on-chip analog and communication peripherals are not required. When designing with this part, plan for an external oscillator (crystal, ceramic resonator, or RC network) and provide proper decoupling (100 nF plus 10 uF bulk) near the VDD pins. Use the WDT and POR features to recover from software lockups. Note that OTP memory cannot be reprogrammed; for prototyping use the JW or windowed package. This page synthesizes distributor pricing, parameter comparison against drop-in alternatives in the same SSOP-20 footprint, and practical design notes that go beyond the manufacturer datasheet summary.

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PIC16C58BT-20E/SO - 8-Bit 20MHz 3KB OTP MCU 18-SOIC | Microchip
PIC16C58BT-20E/SO

PIC16C58BT-20E/SO - 8-Bit 20MHz 3KB OTP MCU 18-SOIC | Microchip

The Microchip Technology PIC16C58BT-20E/SO is an 8-bit RISC microcontroller in the PIC® 16C family, delivering 20MHz maximum clock speed with 3KB (2K x 12) of One-Time Programmable (OTP) program memory and 73 bytes of RAM, housed in an 18-pin SOIC (0.295", 7.50mm width) package. The "T" suffix indicates tape and reel packaging, the "20" denotes 20MHz operation, the "E" suffix marks the extended temperature grade (-40°C to +125°C), and the "SO" indicates the 18-pin Small Outline IC package. An 8-bit OTP microcontroller is a low-cost, high-performance CMOS processor that integrates CPU core, program memory, working RAM, and digital I/O on a single die. OTP memory allows the device to be programmed exactly once after manufacture using a device programmer, making these parts ideal for high-volume, cost-sensitive products where firmware has stabilized. The PIC16C5X family, of which PIC16C58B is a member, uses a 12-bit wide instruction word delivering 2:1 code compression over competitive 8-bit microcontrollers. Key features include 12 I/O pins supporting digital input and output, a RISC architecture with 33 single-word instructions and 2 instruction cycle decoder, a wide 3.0V to 5.5V operating voltage range, and a hardware reset vector. The internal oscillator and timer architecture support simple embedded control loops without external crystal in many applications, reducing BOM cost. The PIC16C58B delivers up to 20MHz instruction throughput, translating to approximately 5 MIPS performance for tight control loops. The 12-bit instruction width and Harvard architecture separate program and data memory paths, allowing simultaneous fetch and execute. 73 bytes of general-purpose RAM accommodate small data sets for sensor monitoring, simple user interfaces, and basic state machines. With 12 I/O pins arranged on an 18-pin SOIC footprint, the device fits compact PCB layouts while retaining sufficient I/O for switching, sensing, and indicator control. Typical applications include automotive body controllers, appliance control boards, security and access control panels, simple LED lighting controllers, battery chargers, and industrial sensor interfaces. The extended temperature grade (-40°C to +125°C) makes this part specifically suited to under-hood automotive modules, outdoor HVAC controls, and factory-floor sensor conditioning. The OTP memory model suits high-volume production runs where firmware revisions are infrequent and BOM cost dominates. When designing with this device, ensure the operating voltage falls within 3.0V to 5.5V and respect the absolute maximum ratings. Programming must occur before PCB assembly using a Microchip-compatible device programmer; OTP parts cannot be reprogrammed. Designers migrating to flash-based parts should consider PIC16F58 or PIC16F182x family replacements that share similar peripheral architecture. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the bare manufacturer datasheet. Engineers can use the comparison_table to verify pin-compatible drop-in choices before committing to a PCB revision.

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PIC16C58BT-20E/SS - 8-bit 20MHz 3KB OTP MCU | Microchip SSOP-20
PIC16C58BT-20E/SS

PIC16C58BT-20E/SS - 8-bit 20MHz 3KB OTP MCU | Microchip SSOP-20

The Microchip PIC16C58BT-20E/SS is an 8-bit EPROM/ROM-based CMOS microcontroller from the PIC16C5X family, featuring a 20 MHz core clock, 3 KB (2K x 12) of one-time programmable (OTP) program memory, and 73 bytes of RAM, housed in a 20-pin SSOP (5.30 mm) package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals. PIC16C5X devices belong to the PIC microcontroller family (Peripheral Interface Controller), classified as RISC microcontrollers -> 8-bit MCU -> microcontroller -> embedded computing -> semiconductor. The PIC16C5X family uses a RISC architecture with 33 single-word/single-cycle instructions, achieving roughly 2:1 code compression versus competitive 8-bit MCUs in its class. Key features include a 12-bit instruction word, 8-level hardware stack, 4 oscillator selections (RC, XT, HS, LP), 12 I/O pins, a watchdog timer with on-chip RC oscillator, and a programmable code protection mechanism. The OTP program memory is well suited to low-volume production and prototype runs that need to mimic mask-ROM cost structure without NRE charges. The PIC16C58BT employs a fully static CMOS design with low power consumption suitable for battery-powered or sleep-dominated applications. The 20 MHz clock rate delivers 5 MIPS throughput (1 instruction per cycle), more than adequate for control loops, simple communication, sensor sampling, and user-interface glue logic. The architecture separates program and data buses (Harvard), letting the CPU fetch instruction and operand in the same cycle. Typical applications include appliance control, smart sensor fans, IoT edge nodes, automotive body electronics, industrial control, white-goods user interfaces, and consumer electronics. Designers select this part when cost is paramount and reprogrammability in-circuit is not required. When designing with this part, account for OTP (one-time-programmable) memory: firmware must be fully validated before commit. The 'E' suffix indicates the extended industrial temperature range (-40C to +125C), making it appropriate for harsh-environment deployments. This page synthesizes distributor pricing, drop-in alternatives, and design guidance compiled from the Microchip PIC16C58BT datasheet and authorized distributor listings.

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PIC16C58BT-20I/SO - 8-Bit 20MHz 3KB OTP MCU | Microchip
PIC16C58BT-20I/SO

PIC16C58BT-20I/SO - 8-Bit 20MHz 3KB OTP MCU | Microchip

The Microchip Technology PIC16C58BT-20I/SO is an 8-bit PIC RISC microcontroller in the PIC16C5x family, housed in an 18-pin SOIC package. It operates at 20 MHz, integrates 3 KB of One-Time Programmable (OTP) program memory organized as 2K x 12 wide instructions, and includes 73 bytes of RAM with 12 I/O pins. Industrial temperature range (-40C to +85C), 5 V supply. An OTP microcontroller (One-Time Programmable MCU) is a single-chip computer whose on-chip program memory can be written exactly once by the end user using a device programmer, after which the code is permanent. OTP MCUs sit in the broader taxonomy: microcontroller -> embedded processor -> semiconductor IC. Compared to flash-based MCUs they cost less per part and ship in windowed/ceramic packages for engineering development, but they cannot be reprogrammed in-circuit, which makes them suited to high-volume mature products where code is frozen. Key features of the PIC16C58BT-20I/SO include Power-On Reset (POR), Watchdog Timer (WDT) with dedicated on-chip RC oscillator for reliable operation without external components, and 12 bidirectional I/O pins each capable of 25 mA source/sink for direct LED or transistor drive. The PIC16C58B family uses a 12-bit instruction word and a two-stage pipeline (fetch + execute) that delivers near-1 MIPS/MHz throughput, and its Harvard architecture separates program and data buses for deterministic instruction timing. Typical applications are appliance controllers, automotive sub-system modules, security and alarm panels, and low-end consumer electronics where code is finalized and high unit volumes drive cost down. The 25 mA I/O sink/source eliminates many driver transistors. Note that the 'B' suffix denotes the enhanced PIC16C58B die (vs. original PIC16C58), the '20' indicates 20 MHz operation, the 'I' indicates the industrial temperature grade, the 'T' indicates tape-and-reel, and the 'SO' indicates the 18-SOIC package. Note that PIC16C5x OTP parts are mature/legacy devices; verify current lifecycle and consider the PIC16F or PIC18F families for new designs. The pinout is shared across the PIC16C55/56/57/58 family in 18-pin packages.

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PIC16C58BT-20I/SS - 8-Bit 20MHz 3KB OTP MCU | Microchip | SSOP-20
PIC16C58BT-20I/SS

PIC16C58BT-20I/SS - 8-Bit 20MHz 3KB OTP MCU | Microchip | SSOP-20

The Microchip Technology PIC16C58BT-20I/SS is an 8-bit RISC microcontroller from the PIC16C5x family, featuring 3KB (2K x 12) of One-Time-Programmable (OTP) EPROM program memory, 73 bytes of RAM, and 12 I/O pins, all housed in a 20-pin SSOP (0.209 inch / 5.30 mm width) surface-mount package. It operates from a 3V to 5.5V supply and runs at up to 20 MHz, making it well suited for cost-sensitive embedded control applications. What is a PIC16C5x microcontroller? The PIC16C5x family from Microchip Technology is a line of low-cost, high-performance, 8-bit fully static, EPROM/ROM-based CMOS microcontrollers that use a RISC architecture. It belongs to the broader category of microcontrollers (MCUs) within embedded processors, characterized by 12-bit wide instructions that provide 2:1 code compression over other 8-bit MCUs in its class. These devices target simple control tasks where deterministic execution and minimal external components are required. Key features include 33 single-word instructions, 2:1 code compression via 12-bit-wide opcodes, a wide operating voltage range of 3.0V to 5.5V, 12 CMOS bidirectional I/O pins, and an industrial temperature rating of -40C to +85C. The OTP EPROM memory enables rapid prototyping without mask charges, while the -20 speed grade guarantees 20 MHz operation across the full voltage and temperature range. The device employs a Harvard architecture with separate program and data buses, a two-stage pipeline, and a built-in oscillator that supports crystal, ceramic resonator, or external clock inputs. With only 33 instructions and a fixed reset vector, the PIC16C5x delivers deterministic interrupt-free operation suitable for hard real-time control loops. Typical applications include industrial automation sensors, consumer appliance controllers, simple motor control, battery chargers, security keypads, and low-cost IoT edge nodes. The wide 3V to 5.5V range allows direct operation from a single lithium cell or a 5V regulated rail. When designing with this MCU, note that OTP memory cannot be reprogrammed, so production code must be fully validated before programming. The 12-bit instruction width and lack of interrupts require firmware planning, but the small footprint and minimal external components make it ideal for volume-sensitive designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C58BT-40/SO - 8-Bit 40MHz OTP MCU, 3KB | Microchip
PIC16C58BT-40/SO

PIC16C58BT-40/SO - 8-Bit 40MHz OTP MCU, 3KB | Microchip

The Microchip Technology PIC16C58BT-40/SO is a member of the PIC® 16C family of 8-bit, fully-static, EPROM/ROM-based CMOS microcontrollers. It features a 40 MHz maximum core clock, 3 KB of one-time-programmable (OTP) program memory organized as 2K × 12-bit words, and 73 bytes of data RAM. The device is housed in an 18-pin SOIC (Small Outline IC) package with gull-wing leads and a 7.50 mm body width. An 8-bit microcontroller (MCU) is a small, low-cost computing core that integrates a CPU, RAM, non-volatile program memory, and on-chip peripherals into a single IC. The PIC16C5X architecture sits inside the broader taxonomy of microcontrollers -> embedded controllers -> semiconductors, and is optimized for cost-sensitive, deterministic control tasks. The 12-bit wide instruction set delivers a 2:1 code compression advantage over other 8-bit MCUs in its class, reducing ROM requirements for a given feature set. Key features include 12 I/O pins, one 8-bit timer/counter with watchdog timer (WDT) function, Power-On Reset (POR), brown-out detection variants, a programmable code-protection mechanism, and an operating voltage range of 3.0 V to 5.5 V. The fully-static CMOS design eliminates the minimum clock frequency requirement, allowing the device to be clocked down to DC for low-power standby states. Typical applications for the PIC16C58BT-40/SO include appliance controls, security system panels, automotive sub-system controllers (non-safety), low-end sensor interfaces, and battery-powered consumer products. Its wide operating temperature range and OTP memory make it suitable for high-volume, code-stable embedded products. Designers should note that the OTP memory cannot be electrically erased or rewritten after programming; a windowed ceramic package variant (PIC16C58B-40/JW) is required for development and code iteration. Adequate decoupling (0.1 µF ceramic close to VDD/VSS) and an in-circuit serial programming (ICSP) header should be reserved on the PCB even when production programming is performed externally. This page synthesizes distributor availability, cross-brand and same-brand drop-in alternatives in the SOIC-18 footprint, and practical design notes not consolidated in the manufacturer datasheet.

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PIC16C58BT-40/SS - 8-bit 40MHz OTP MCU 3KB | Microchip
PIC16C58BT-40/SS

PIC16C58BT-40/SS - 8-bit 40MHz OTP MCU 3KB | Microchip

The Microchip Technology PIC16C58BT-40/SS is an 8-bit RISC microcontroller from the PIC16C5X family, featuring a 40 MHz maximum clock speed, 3 KB (2K x 12) of One-Time-Programmable (OTP) program memory, and 73 bytes of RAM, housed in a 20-pin SSOP (5.30 mm) package. The "T" suffix denotes tape and reel packaging, "40" denotes the 40 MHz speed grade, and "/SS" specifies the SSOP-20 package. A PIC microcontroller is a compact programmable logic device based on a Harvard-architecture RISC core. PIC16C5X devices belong to the original PIC family of 8-bit microcontrollers - they execute one instruction per clock cycle (except branches) and use 12-bit wide instructions. The hierarchy is: PIC16C5X -> PIC16C family -> PIC microcontroller -> 8-bit MCU -> microcontroller -> embedded IC. They are OTP variants, meaning program memory can be written once and is non-erasable, distinguishing them from flash-based PIC16F devices. Key features include 12 digital I/O pins, a programmable timer/counter, a watchdog timer, power-on reset, and a wide operating voltage range typical of the PIC16C5X family. The 20-pin SSOP package provides a small footprint while supporting the full peripheral set, and the commercial temperature grade (0C to +70C) makes it suitable for consumer and industrial embedded applications. The PIC16C58B uses a static CMOS design with low power consumption, suitable for both battery-powered and line-powered applications. Its RISC architecture delivers performance an order of magnitude higher than competing 8-bit MCUs in the same price category, and its 12-bit wide, highly symmetrical instructions produce 2:1 code compression versus other 8-bit microcontrollers in its class. Typical applications include appliance control, sensor interface modules, LED driver controllers, simple motor control, and consumer white goods where deterministic response, low cost, and one-time programmability are required. The PIC16C5X architecture has been in production for decades and is supported by a mature toolchain including MPASM assembler and MPLAB IDE. When designing with this MCU, ensure that all unused I/O pins are configured as outputs and tied low to minimize power consumption. Because this is an OTP device, firmware must be fully validated on a windowed or flash equivalent before committing to the production order. This page synthesizes distributor pricing, drop-in same-package alternatives from Microchip's PIC16C5X family, and practical design notes not aggregated on any single distributor page, providing engineers with a single-source decision view.

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PIC16C620-04/SO - 8-Bit 4MHz CMOS MCU, 896B OTP, 13 I/O | Microchip
PIC16C620-04/SO

PIC16C620-04/SO - 8-Bit 4MHz CMOS MCU, 896B OTP, 13 I/O | Microchip

The Microchip Technology PIC16C620-04/SO is an EPROM-based 8-bit CMOS microcontroller in the PIC16C family, delivering 4MHz CPU performance with 896 bytes (512 x 14) of One-Time-Programmable (OTP) program memory in an 18-pin SOIC (SO) gull-wing surface-mount package. The "04" speed suffix designates a 4 MHz oscillator domain, while the "/SO" suffix specifies the 18-lead small-outline IC package. A PIC microcontroller is a compact microcontroller unit (MCU) built on a Harvard-architecture Reduced Instruction Set Computer (RISC) core that integrates CPU, program memory, data RAM, and peripheral I/O on a single chip. PIC microcontrollers sit within the broader hierarchy of embedded processors -> microcontrollers -> 8-bit MCUs -> PIC16C family, and are widely used as the central controller in industrial, automotive, appliance, and consumer-electronic products. The PIC16C620 specifically belongs to Microchip's mid-range PIC16C5x/PIC16C6x lineage featuring OTP EPROM program memory, suitable for low-volume, cost-sensitive, or development-stage designs. An OTP device is programmed once and cannot be erased, which makes it ideal for fixed-function production units that do not require firmware updates. Key features of the PIC16C620-04/SO include 80 bytes of data RAM, 13 digital I/O pins, a watchdog timer, an 8-bit timer/counter (TMR0), and a power-on reset (POR) circuit. The device supports a wide operating voltage range, allowing it to operate from low-voltage battery systems as well as standard 5 V rails. Compared to flash-based PIC16F successors, the OTP PIC16C620 offers lower per-unit cost at higher volumes, with no field-upgrade capability. Typical applications for the PIC16C620-04/SO include low-cost remote control transmitters, small appliance controllers, security-system keypads, sensor-interface modules, and industrial timer modules. Designers transitioning legacy PIC16C620 designs to flash-based replacements typically migrate to PIC16F627A/628A/648A in the same 18-pin SOIC footprint for in-circuit re-programmability. When designing with this part, remember that OTP memory cannot be re-programmed - any firmware change requires a new device. For prototypes and field-updateable production, consider a flash-based PIC16F6xxA in the same 18-SOIC footprint.

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PIC16C620-04/SS - 8-Bit CMOS MCU, 4MHz, 896B OTP, SSOP-20 | Microchip
PIC16C620-04/SS

PIC16C620-04/SS - 8-Bit CMOS MCU, 4MHz, 896B OTP, SSOP-20 | Microchip

The Microchip Technology PIC16C620-04/SS is an EPROM-based 8-bit CMOS microcontroller belonging to the PIC® 16C family, packaged in a 20-pin SSOP (Shrink Small Outline Package) with 0.209 inch (5.30 mm) body width. The device operates at a maximum clock speed of 4 MHz and integrates 896 bytes of program memory (512 x 14 OTP), 80 bytes of data RAM, and 13 digital I/O pins. The "-04" speed suffix designates the 4 MHz maximum oscillator frequency, while the "/SS" suffix denotes the SSOP-20 industrial/commercial surface-mount package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and I/O peripherals. Within the broader taxonomy, the PIC16C620 belongs to the EPROM-based sub-family of Microchip's mid-range PIC architecture, sitting between the baseline 12-bit core and the enhanced 14-bit core, and forms part of the legacy PIC16C5x/PIC16C6x/7x product tree. OTP (One-Time-Programmable) EPROM cells are used in place of flash, providing a cost-optimized solution for high-volume mature designs that are already past their development phase. Key features of the PIC16C620-04/SS include two analog comparators with programmable reference, a 5-channel 8-bit A/D converter (PIC16C620 variant), capture/compare/PWM modules, and a wide operating voltage range of 3.0 V to 6.0 V. The fully static CMOS design enables low power consumption (15 µA typical at 5 V/4 MHz and 1 µA typical at 3 V/32 kHz) and supports commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature grades. A built-in power-on reset, watchdog timer, and brown-out detection enhance system reliability in industrial and appliance applications. Typical applications include white goods and appliance control, motor control interfaces, low-end security systems, simple sensor signal conditioning, lighting ballasts, automotive body electronics, and battery-powered embedded systems. The PIC16C620-04/SS is also widely used as a cost-down replacement for PIC16C5x designs and in educational/training kits due to its mature toolchain support through MPLAB IDE and PICSTART Plus programmers. When designing with the PIC16C620-04/SS, note that OTP memory requires windowed or one-time programming, so this part is best suited for mature production designs rather than iterative development. Designers transitioning from the PIC16C620 to the PIC16F628 should evaluate pin compatibility and verify that comparator and timer peripheral mappings match exactly.

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PIC16C620-04E/P - 8-Bit OTP MCU, 896B, 4MHz, 18-DIP | Microchip
PIC16C620-04E/P

PIC16C620-04E/P - 8-Bit OTP MCU, 896B, 4MHz, 18-DIP | Microchip

The Microchip Technology PIC16C620-04E/P is an EPROM-based 8-bit CMOS microcontroller from the PIC16C family, delivering 4MHz maximum clock speed with a 200ns instruction cycle in an 18-pin PDIP through-hole package. The device integrates 896 bytes of OTP program memory (organized 512 x 14), 80 bytes of data RAM, and 13 digital I/O pins suitable for embedded control applications. A PIC microcontroller (Peripheral Interface Controller) is a family of Harvard-architecture 8-bit RISC microcontrollers from Microchip Technology, widely used in embedded systems for low-power, deterministic control. Positioned in the hierarchy as: PIC microcontroller -> 8-bit MCU -> microcontroller -> semiconductor. The PIC16C62X family specifically targets cost-sensitive applications with one-time programmable (OTP) memory for prototyping and low-volume production. The 'E' suffix indicates the extended operating temperature range (-40C to +125C, automotive grade), and the '04' denotes the 4MHz maximum clock speed grade. Key features of the PIC16C620-04E/P include a RISC core with only 35 single-word instructions to learn, all single-cycle except program branches which are two-cycle, an internal watchdog timer, power-on reset, brown-out reset, and an external oscillator interface. The 13 I/O pins support digital I/O with individually programmable direction registers. The OTP memory allows one-time field programming via standard device programmers such as the MPLAB PM3. Technically, the PIC16C620 architecture uses a Harvard design with separate program and data buses, enabling simultaneous instruction fetch and data access. The 14-bit instruction word provides efficient encoding for the RISC instruction set, and the 8-bit data path with 80 bytes of RAM supports typical control-loop variables, small buffers, and stack operations (8-level hardware stack). Operating voltage is specified for 3.0V to 5.5V, with low-power sleep modes available for battery-sensitive designs. Typical applications include automotive body electronics, appliance control, sensor signal conditioning, simple motor control, and legacy industrial control systems. Its 18-pin DIP package also makes it suitable for educational and hobbyist use where through-hole construction is preferred. The automotive temperature grade qualifies it for under-hood and cabin-mounted modules. When designing with this part, note that OTP memory cannot be re-programmed, so the PIC16C620 is best suited to mature firmware or low-volume production. Engineers migrating to flash memory should consider the PIC16F62X family, which offers in-circuit reprogramming while maintaining pin compatibility. Always verify oscillator type and frequency against the system timing requirements. This page synthesizes distributor pricing, drop-in alternatives within the PIC16C62X family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C620-04E/SO - 4MHz 8-bit OTP MCU, 13 I/O, 18-SOIC | Microchip
PIC16C620-04E/SO

PIC16C620-04E/SO - 4MHz 8-bit OTP MCU, 13 I/O, 18-SOIC | Microchip

The Microchip Technology PIC16C620-04E/SO is an EPROM-based 8-bit CMOS microcontroller from the PIC16C62X family, featuring 896 bytes (512 x 14) of one-time-programmable (OTP) program memory and 80 bytes of RAM, operating at up to 4MHz clock input (200 ns instruction cycle). It integrates a 13-pin I/O port, two 8-bit timers, a watchdog timer, and a 4-channel 8-bit analog comparator in an 18-pin SOIC (0.295 in / 7.50 mm width) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. The PIC16C62X family sits within the broader taxonomy of PIC mid-range 8-bit microcontrollers, which themselves descend from the RISC-based PIC architecture and the wider class of embedded controllers used in low-power deterministic real-time systems. PIC MCUs are widely used in automotive body electronics, appliance control, sensor interfacing, and industrial 8-bit applications where predictable instruction timing and small footprint matter more than raw compute throughput. Key features include 35 single-cycle RISC instructions (200 ns cycle at 4 MHz), wide 2.5V-6.0V operating voltage, in-circuit serial programming (ICSP) capability, power-saving SLEEP mode, and an internal 4 MHz RC oscillator option. The 13 I/O pins are bidirectional with individually selectable weak pull-ups, and the analog comparators support programmable reference and multiple input configurations for signal conditioning. Architecturally, the PIC16C620 uses a Harvard-style bus (separate program and data paths) and a 14-bit instruction word, delivering deterministic single-cycle execution on most opcodes. The EPROM program memory supports one-time programming for prototype and low-volume production; Microchip recommends the flash-based PIC16F62X family as the migration path for new designs. Typical applications include automotive body controllers, small appliance control boards, sensor interfaces, security alarm panels, and remote-control encoders. Designers choose the PIC16C620 for its compact SOIC footprint, mid-range peripheral set, and Microchip's mature toolchain support via MPLAB X IDE and the PICkit programmer family. When designing with this device, note that EPROM-based parts cannot be erased by the user; engineers should validate firmware on flash equivalents (PIC16F62X) before committing to the OTP variant in production. The E suffix denotes the extended -40C to +125C industrial temperature range. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes not consolidated in the manufacturer datasheet, providing engineers with a faster path from MPN search to validated BOM decision.

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PIC16C620-04I/P - 8-Bit OTP MCU, 4MHz, 13 I/O, 18-PDIP | Microchip
PIC16C620-04I/P

PIC16C620-04I/P - 8-Bit OTP MCU, 4MHz, 13 I/O, 18-PDIP | Microchip

The Microchip Technology PIC16C620-04I/P is an 8-bit CMOS one-time programmable (OTP) RISC microcontroller operating at 4 MHz, with 896 bytes of program memory (512 x 14 words), 80 bytes of RAM, and 13 I/O pins, packaged in an 18-pin PDIP (0.300 inch / 7.62 mm) through-hole format. The PIC16C620-04I/P belongs to the PIC16C62X family of low-power, high-speed CMOS EPROM/ROM-based microcontrollers designed for fully static operation and wide operating voltage support. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripheral interfaces onto one silicon die. Within the broader semiconductor taxonomy, MCUs sit inside the embedded computing hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. RISC (Reduced Instruction Set Computer) MCUs like the PIC16C620 use a small, fixed instruction set to deliver deterministic execution and small code size; OTP program memory is programmed once at production with the firmware image. Key features include 4 MHz maximum clock, 13 bidirectional digital I/O pins, an internal watchdog timer, a programmable code protection mechanism, power-saving SLEEP mode, and an analog comparator module. The device supports DC to 4 MHz operation with a 200 ns instruction cycle, providing efficient control for simple embedded tasks. The industrial temperature grade (-40 °C to +85 °C) and wide 2.5 V to 6.0 V operating voltage range allow deployment in harsh environments and battery-powered systems. The PIC16C620-04I/P uses a Harvard RISC architecture with separate program and data buses, 35 single-word instructions, and a hardware stack. Internal peripherals include a timer/counter, capture/compare/PWM (CCP) module support, and an analog comparator. The wide operating voltage (2.5 V to 6.0 V) supports both 3.3 V and 5 V designs, while low typical quiescent current makes it suitable for power-sensitive applications. Typical applications include appliance control, sensor signal conditioning, LED lighting controllers, automotive interior modules, simple motor control loops, and industrial automation subsystems. Designers choose this MCU for its small footprint, deterministic interrupt response, and Microchip's mature MPLAB development ecosystem. It is also frequently used as a drop-in compatible companion in legacy designs that already standardized on PIC16C6X-family pinouts. When designing with this device, note that OTP program memory cannot be reprogrammed in-circuit; for prototyping or field updates, choose the flash-memory PIC16F62X equivalent (e.g., PIC16F628). Decoupling capacitors (0.1 µF) must be placed close to VDD/VSS pins, and the MCLR reset pin must be tied through a resistor to VDD for proper power-on reset behavior.

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PIC16C620-04I/SO - 8-Bit 4MHz OTP MCU, 896B EPROM | Microchip
PIC16C620-04I/SO

PIC16C620-04I/SO - 8-Bit 4MHz OTP MCU, 896B EPROM | Microchip

The Microchip Technology PIC16C620-04I/SO is a member of the PIC16C62X family of 8-bit CMOS microcontrollers based on the RISC architecture, offering 896 bytes (512 x 14) of one-time-programmable (OTP) program memory, 80 bytes of RAM, and 13 digital I/O pins in a 18-pin SOIC (W) industrial-temperature package. Operating from a 3.0V to 6.0V supply at 4 MHz instruction rate, it integrates a precision analog comparator module, a capture/compare/PWM (CCP) peripheral, and a watchdog timer with its own on-chip RC oscillator. According to the Microchip PIC16C62X datasheet family, this device targets cost-sensitive embedded control in industrial (-40C to +85C, suffix I) environments. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, working RAM, and a configurable set of peripherals on a single silicon die. The PIC16C62X architecture is a Harvard-class RISC design, meaning program and data buses are physically separated, so instruction fetch and operand load occur in a single cycle - giving deterministic 4 MIPS throughput at a 4 MHz clock. Within the broader taxonomy, the PIC16C620 sits at the bottom of the OTP-programmable mid-range PIC family and has largely been superseded in new designs by flash-based PIC16F equivalents with identical pinout but in-system programmability. Key features include the dual on-chip analog comparators with programmable reference voltage output, a 13-bit-wide I/O port structure (PORTA 5-bit, PORTB 8-bit), hardware USART/SCI, an 8-bit timer/counter (TMR0) with 8-bit programmable prescaler, and a TMR1 16-bit timer/counter with an external crystal/clock option. Brown-out reset, power-on reset, and the watchdog timer with independent oscillator protect code execution during brown-out and supply transients. The 18-pin SOIC package offers approximately 300 mil (7.50 mm) body width, well suited to hand-soldered prototypes and high-density SMT assembly alike. Typical applications for the PIC16C620-04I/SO include appliance control boards, sensor signal conditioning front-ends, security and alarm panels, low-end SMPS control loops, simple closed-loop fan/valve drivers, and white-goods motor controllers. Industrial temperature rating allows deployment in factory-floor enclosures and outdoor cabinets without additional thermal conditioning. The integrated analog comparators eliminate an external op-amp in threshold-detection circuits. When designing with this device, note that OTP memory requires a device programmer (e.g., MPLAB PM3) at the time of firmware write - there is no field upgrade path. Choose a PIC16F62X flash variant instead if in-application reprogrammability is needed; the pinout is identical, so a board designed for PIC16C620-04I/SO will accept a flash-based PIC16F628 drop-in part with no PCB rework. The 4 MHz speed grade is sufficient for control loops up to a few kHz but is not appropriate for high-speed communication or DSP-style signal processing. This page synthesizes distributor pricing across at least five sources, pin-compatible OTP and flash drop-in alternatives, and practical design notes for industrial 8-bit MCU selection not found in any single manufacturer datasheet.

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