集積回路

サブカテゴリ

📁 ADC/DAC 3,100+ 製品 📁 アンプIC 1,700+ 製品 📁 オーディオコーデック 18 製品 📁 オーディオIC 2 製品 📁 クロック＆タイミング 650+ 製品 📁 Comparator ICs 1 製品 📁 DSP 1,100+ 製品 📁 データ収集IC 2 製品 📁 デジタルポテンショメータ 4 製品 📁 ディスプレイドライバ＆コントローラ 1 製品 📁 FPGA & CPLD 7,100+ 製品 📁 インターフェースIC 3,100+ 製品 📁 LEDドライバ 1 製品 📁 ロジックIC 450+ 製品 📁 メモリIC 870+ 製品 📁 マイクロコントローラ 20,000+ 製品 📁 マイクロプロセッサ 4 製品 📁 モータドライバ 1 製品 📁 その他 1 製品 📁 Sensor and Detector Interfaces 1 製品 📁 専用IC 15 製品 📁 ビデオIC 13 製品

製品 (38,000+)

PIC16C55A-20/SO - 8-Bit 20MHz OTP MCU 768B 28-SOIC | Microchip
PIC16C55A-20/SO

PIC16C55A-20/SO - 8-Bit 20MHz OTP MCU 768B 28-SOIC | Microchip

The Microchip Technology PIC16C55A-20/SO is an 8-bit RISC CMOS microcontroller belonging to the PIC16C5X family, delivering 20 MHz maximum clock speed with 768 bytes (512 x 12) of One-Time-Programmable (OTP) program memory in a 28-pin SOIC surface-mount package. The device exposes 20 digital I/O pins, integrates 24 bytes of general-purpose RAM, and provides 12-bit-wide instruction words with single-cycle execution across 33 instruction opcodes for compact code density. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path and a Harvard or modified-Harvard architecture. Within the broader hierarchy, MCUs sit inside the microcontrollers category, which itself belongs to integrated circuits, semiconductor devices, and finally electronic components. The PIC16C5X family specifically represents Microchip's lowest-cost OTP/EPROM-based controllers targeted at high-volume, cost-sensitive embedded designs where re-programmability is not required after deployment. Key features include an 8-bit timer/counter (TMR0) with programmable prescaler, two-level hardware stack, support for direct, indirect and relative addressing modes, and a wide 2.0V to 6.0V operating voltage range. The fully static CMOS design allows the clock to be stopped without losing register contents, and the RISC architecture achieves 2:1 code compression versus typical 8-bit CISC competitors in the same price class. On the technical depth side, the PIC16C55A-20/SO implements a two-stage pipeline, executes one instruction per clock cycle (except branches), and offers seven or eight special-function hardware registers mapped into its data memory. The 20 MHz oscillator version provides approximately 5 MIPS throughput, which is ample for appliance control, simple sensor interfaces, and low-cost user-interface glue logic. Typical applications include consumer appliance controllers, LED display drivers, low-end remote controls, battery chargers, security keypads, and educational/hobbyist platforms. Because the program memory is OTP, designers must commit firmware before final assembly, making the part best suited to mature, stable code bases. When designing with this device, allocate sufficient decoupling (0.1 uF ceramic near VDD) and respect the 20 MHz maximum oscillator limit with appropriate crystal loading capacitance. The 28-SOIC package supports hand-soldering but is also fully compatible with automated pick-and-place assembly for production runs. This page consolidates current distributor pricing, same-package drop-in alternatives from the Microchip PIC16C5X family and cross-brand equivalents, application design notes, and a parameter comparison table not available on any single manufacturer or distributor page.

見積もり お問い合わせ
PIC16C55A-20/SP - 8-Bit 20MHz OTP MCU, 20 I/O, SPDIP-28 | Microchip
PIC16C55A-20/SP

PIC16C55A-20/SP - 8-Bit 20MHz OTP MCU, 20 I/O, SPDIP-28 | Microchip

Microchip Technology PIC16C55A-20/SP is an 8-bit RISC microcontroller in the PIC16C5X baseline family, supplied in a 28-pin SPDIP (Skinny Plastic DIP) package. It integrates 768 bytes of one-time-programmable (OTP) program memory (organized as 512 x 12 words), 24 bytes of RAM, and runs the PIC16 instruction set at up to 20 MHz clock rate with 200 ns instruction cycle. The device provides 20 general-purpose digital I/O pins arranged across ports RA and RB, two 8-bit timer/counters (TMR0 and TMR1) plus a watchdog timer, and a two-level hardware stack for subroutine nesting. A baseline PIC microcontroller is an 8-bit CMOS MCU that executes a compact 12-bit-wide instruction set optimized for low-cost embedded control. It belongs to the hierarchy: PIC16C5X -> PIC16 family -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. Baseline PICs use a separate program and data bus (Harvard architecture variant), enabling single-cycle instruction fetch and deterministic timing - they are favored where predictable execution, OTP cost, and small footprint outweigh the need for large memory or advanced peripherals. The 16C5X family uses seven or eight Special Function Registers and provides direct, indirect, and relative addressing modes for both data and instructions. Key features include an 8-bit real-time clock/counter (TMR0) with programmable prescaler, a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable recovery, on-chip power-on reset (POR), and brown-out detection. Power-saving features include a SLEEP mode with wake-up on pin change, and the device operates from a 2.5 V to 5.5 V supply. CMOS process technology delivers low power consumption with typical active current in the low-mA range and standby currents in the microamp region. The PIC16C55A architecture uses a 12-bit instruction word and an 8-bit data path, providing roughly 2:1 code compression over competitive 8-bit MCUs in the same price class. The OTP program memory suits low-to-medium volume production where in-system re-programmability is not required, keeping unit cost low for high-volume appliance, sensor, and consumer-electronics designs. Typical applications include washing-machine controllers, microwave-oven user interfaces, remote-control transmitters, smoke and gas detectors, battery chargers, and small motor-control boards. Its wide operating temperature range (commercial 0 C to +70 C; industrial -40 C to +85 C via the -I variant) also makes it viable for HVAC, lighting ballasts, and industrial sensor front-ends. When designing with this part, evaluate OTP lock-in versus the flash-based PIC16F5X equivalents if in-field firmware updates may be required. For new designs, prefer flash-based PIC16F counterparts unless OTP cost is the dominant constraint. This page synthesizes parametric data, drop-in alternatives, and practical design notes not consolidated on a single manufacturer or distributor page.

見積もり お問い合わせ
PIC16C55A-20E/P - 8-Bit 20MHz OTP MCU, 768B, 28-PDIP | Microchip
PIC16C55A-20E/P

PIC16C55A-20E/P - 8-Bit 20MHz OTP MCU, 768B, 28-PDIP | Microchip

The Microchip Technology PIC16C55A-20E/P is an 8-bit RISC microcontroller from the PIC® 16C family, operating at up to 20 MHz clock speed with 768 bytes (512 x 12) of OTP program memory and 25 bytes of RAM, housed in a 28-pin PDIP through-hole package. It offers 20 general-purpose I/O pins, automotive temperature grade (-40C to +125C), and an operating voltage range of 3.0V to 6.0V typical. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC16C5X family is positioned at the entry level of the 8-bit RISC MCU taxonomy: PIC16C5X -> PIC16C family -> PIC microcontrollers -> 8-bit microcontrollers -> microcontrollers -> embedded ICs. The 12-bit wide instruction set provides 2:1 code compression over competing 8-bit MCUs, allowing more functionality in fewer bytes of program memory. Key features include a 33-instruction set, 12-bit wide instructions, 2:1 code compression versus competitors, 8-bit data path, 20 MHz maximum clock frequency, and one-time programmable (OTP) program memory. The 28-pin PDIP package provides breadboard-friendly through-hole mounting suitable for prototyping, education, and legacy industrial systems. Architecturally, the PIC16C55A uses a Harvard-architecture RISC core with separate program and data buses. The OTP memory is programmed once and cannot be erased, making the device well-suited to high-volume, cost-sensitive applications where firmware is finalized at production. The automotive temperature grade extends operating range to -40C to +125C, distinguishing the 'E' suffix from commercial-grade variants. Typical applications include automotive embedded controllers, legacy industrial control systems, appliance control boards, prototyping platforms, educational development boards, and cost-sensitive replacement designs. The 28-pin PDIP form factor remains popular for through-hole manufacturing lines and hobbyist development. When designing with this device, note that OTP memory cannot be field-updated - any firmware bug requires physical IC replacement. Use the parallel programming mode and a Microchip-approved device programmer (such as the MPLAB PM3) for production programming. This page synthesizes distributor pricing from DigiKey/Mouser, automotive-grade drop-in alternatives in the same 28-PDIP footprint, and practical design notes not found in the manufacturer datasheet.

見積もり お問い合わせ
PIC16C55A-20E/SO - 20MHz 8-Bit OTP MCU | Microchip | 28-SOIC
PIC16C55A-20E/SO

PIC16C55A-20E/SO - 20MHz 8-Bit OTP MCU | Microchip | 28-SOIC

The Microchip Technology PIC16C55A-20E/SO is a 20 MHz, 8-bit, fully static, EPROM/OTP-based CMOS microcontroller in the PIC16C5X family, housed in a 28-pin SOIC (SO) 0.295-inch/7.50 mm wide surface-mount package. The "-20E" suffix denotes the 20 MHz maximum clock speed and the extended (-40C to +125C) operating temperature grade. It integrates 768 bytes of EPROM/OTP program memory (organized as 512 x 12 words), 24 bytes of general-purpose SRAM, 12-bit instruction word architecture, and 20 digital I/O pins arranged across four ports (RA, RB, RC, RD). A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory, working RAM, and configurable I/O peripherals on one IC. The PIC16C5X family occupies the entry-level, cost-optimized branch of Microchip's 8-bit PIC portfolio, descending from the broader class of 8-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors. It uses a RISC instruction set with 33 single-cycle instructions, has no onboard peripherals beyond the core I/O and timer, and is intended for high-volume cost-sensitive applications where OTP programmability is acceptable. Key features of the PIC16C55A-20E/SO include 768 bytes of OTP program memory, 24 bytes of RAM, four I/O ports (PORTB 8-bit, PORTC 8-bit, PORTD 4-bit plus RA 4-bit variant), a 20 MHz maximum oscillator frequency, and a wide 3.0 V to 5.5 V supply range. The 20 MHz clock enables a 200 ns instruction cycle at full speed; instructions are 12 bits wide, providing compact code density. The device uses an external oscillator and supports crystal, ceramic resonator, or RC clock inputs. Architecturally, the PIC16C55A uses a Harvard RISC core with separate program and data paths, a 12-bit instruction word, and a 2-level hardware stack. Its reset and watchdog timing characteristics are defined in the manufacturer datasheet. There is no integrated UART, ADC, or interrupt controller beyond the basic external/port-change interrupt on PORTB, making this part one of the simplest members of the PIC16C5X family and the closest sibling of the PIC16C54A and PIC16C57C. Typical applications for the PIC16C55A-20E/SO include low-cost consumer appliances, simple motor controllers, LED display drivers, automotive body controllers (using the -E temperature grade), battery chargers, remote-control transmitters, and any high-volume embedded design that requires OTP one-time programmable memory rather than flash. The PIC16C5X is often selected where field upgrades are unnecessary and unit cost is the primary driver. When designing with this device, note that OTP memory cannot be rewritten in-circuit, so the firmware must be fully verified on EPROM-windowed samples (PIC16C55A-20/JW) before committing to OTP production. The lack of an internal oscillator means an external clock source must always be supplied, and the wide 0.295-inch SO body requires careful clearances in compact layouts. This page synthesizes distributor pricing, drop-in OTP/EPROM and FLASH alternatives, and practical design notes not found in the standalone manufacturer datasheet.

見積もり お問い合わせ
PIC16C55A-20E/SP - 8-Bit 20MHz OTP MCU 768B | Microchip
PIC16C55A-20E/SP

PIC16C55A-20E/SP - 8-Bit 20MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55A-20E/SP is an 8-bit RISC microcontroller from the PIC16C5X family operating at up to 20 MHz, with 768 bytes (512 x 12-bit words) of One-Time Programmable (OTP) program memory, 25 bytes of RAM, and packaged in a 28-pin SPDIP (SP) through-hole DIP. The "E" suffix denotes the extended industrial temperature grade of -40C to +125C, while the trailing /SP indicates the SPDIP-28 plastic dual-in-line package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral interfaces into one package. The PIC16C5X baseline family uses a 12-bit-wide instruction set with a RISC architecture, delivering roughly 2:1 code compression over competing 8-bit MCUs in the same price class - meaning engineers can fit equivalent application logic in half the program memory. OTP program memory lets manufacturers ship pre-programmed parts at low cost without exposing internal flash to outside programming. Key features of the PIC16C55A include 20 I/O pins, a Power-On Reset (POR) circuit, a Watchdog Timer (WDT) for runaway code recovery, an 8-bit timer/counter, and a 4 MHz internal RC oscillator option. The device operates across 3.0V to 6.25V (industrial Vdd range typical for PIC16C5X) and consumes very low active current, suiting battery and line-powered embedded designs. The PIC16C5X 12-bit instruction width keeps the decoder compact and predictable for deterministic control loops. Typical applications include appliance control boards, simple sensor signal conditioning, LED driver sequencing, automotive body controllers (with the E temp grade), HVAC fan/timer logic, and industrial relay-driver replacement logic. The 28-pin SPDIP footprint is also convenient for breadboarding and educational use because it fits standard DIP sockets and through-hole prototyping boards. When designing with the PIC16C55A-20E/SP, plan for OTP programming flow using the MPLAB PM3 programmer or compatible device programmer, since OTP parts cannot be re-programmed in-circuit after the programming window is closed. Use the WDT and POR together for robust field recovery, and budget the 25-byte RAM carefully - this is a baseline PIC, not a mid-range PIC16F, so C-stack depth and large buffers will exhaust RAM quickly.

見積もり お問い合わせ
PIC16C55A-20I/P - 8-Bit 20MHz OTP MCU 768B | Microchip
PIC16C55A-20I/P

PIC16C55A-20I/P - 8-Bit 20MHz OTP MCU 768B | Microchip

The Microchip PIC16C55A-20I/P is a low-cost, high-performance 8-bit fully-static EPROM/ROM-based CMOS microcontroller in a 28-pin PDIP package, operating at 20 MHz with industrial temperature range support. It integrates 768 bytes of program memory (512 x 12 OTP), 24 bytes of RAM, and 20 general-purpose I/O pins, providing a compact solution for simple embedded control. A microcontroller (MCU) is a single-chip computer that contains a processor core, memory, and programmable input/output peripherals. The PIC16C5X family from Microchip Technology belongs to the broader category of 8-bit microcontrollers -> microcontrollers -> microprocessors -> semiconductors. These devices implement a RISC architecture with 33 single-word, single-cycle instructions and a 12-bit wide instruction word, achieving 2:1 code compression over competing 8-bit MCUs in the same price class. Key features of the PIC16C55A-20I/P include a 20 MHz maximum clock speed, 20 MHz operating frequency, a two-level deep hardware stack, direct/indirect/relative addressing modes, and an 8-bit real-time clock/counter (TMR0) with 8-bit programmable prescaler. It supports a wide operating voltage range typical of the PIC16C5X family, with low power consumption suitable for battery and industrial applications. From an architectural standpoint, the device uses a Harvard-style separated program and data bus, with the 12-bit instruction path enabling efficient encoding of arithmetic, branch, and bit-oriented operations in a single cycle. The PIC16C55A derivative of the PIC16C5X series offers expanded I/O (20 pins) and program memory (512 x 12) relative to the PIC16C54 base device, with OTP one-time-programmable EPROM for cost-sensitive production runs. Note: This device is marked as 'Not Recommended for new designs' (NRND) by Microchip; for new designs, Microchip recommends the PIC16F57-I/P family. Typical applications include industrial control logic, automotive body electronics, simple sensor interfaces, appliance controls, and battery-powered instrument subsystems. The 20 MHz instruction execution rate and 20 GPIO make the device well-suited for tasks such as keypad scanning, LED driving, and low-speed serial protocols. Industrial temperature grade (-40C to +85C) extends its suitability to factory automation and outdoor equipment. When designing with the PIC16C55A-20I/P, ensure the system clock source (RC oscillator, crystal, or resonator) matches the 20 MHz maximum rating, and respect the two-level hardware stack depth when writing interrupt or call-heavy code. Engineers targeting new designs should evaluate the Flash-based PIC16F57-I/P as a migration path that preserves pin-out while adding reprogrammability and longer-life cycle status. This page synthesizes distributor stock levels, parametric equivalents, pricing tiers, and practical design notes not found in the manufacturer datasheet, enabling faster component selection and risk assessment for both new designs and legacy maintenance scenarios.

見積もり お問い合わせ
PIC16C55A-20I/SP - 8-bit OTP MCU, 20MHz, 768B, SPDIP-28 | Microchip
PIC16C55A-20I/SP

PIC16C55A-20I/SP - 8-bit OTP MCU, 20MHz, 768B, SPDIP-28 | Microchip

The Microchip Technology PIC16C55A-20I/SP is a member of the PIC16C5X family of 8-bit CMOS microcontrollers featuring a RISC architecture with 12-bit wide instructions and an 8-bit wide data path. The device operates at a maximum clock speed of 20 MHz, contains 768 bytes (512 x 12) of one-time-programmable (OTP) program memory and 24 bytes of RAM, and provides up to 20 digital I/O pins in a 28-pin SPDIP package. The "/SP" suffix denotes the SPDIP-28 through-hole package while the "/I" suffix denotes the industrial operating temperature range of -40C to +85C. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, working RAM, and peripherals such as I/O ports, timers, and interrupt logic. Within the broader taxonomy, the PIC16C55A belongs to the 8-bit MCU class -> RISC MCU -> Harvard-architecture MCU -> embedded controller -> semiconductor. The PIC16C5X family uses a 12-bit instruction word with a 2:1 code compression advantage over competing 8-bit MCUs of its era, and its symmetric instruction set reduces development time significantly. Key features of the PIC16C55A-20I/SP include seven or eight special function hardware registers, a two-level deep hardware stack, and direct, indirect, and relative addressing modes for both data and instructions. An 8-bit real-time clock/counter (TMR0) with a programmable prescaler is integrated, along with a watchdog timer for unattended operation. The architecture uses a modified Harvard design with separate program and data buses for deterministic instruction execution. Typical applications include appliance control, automotive subsystems, industrial process control, security and access systems, and low-end consumer products where cost-sensitive embedded control is needed. The device is supported by the PICmicro Mid-Range Reference Manual and the MPLAB PM3 Universal Device Programmer for code development and OTP programming. When designing with this part, note that OTP memory cannot be reprogrammed in-circuit - firmware bugs require part replacement. Provide a clean +5V supply with adequate decoupling (100 nF plus 10 uF bulk) on VDD, and respect the 5V absolute maximum rating when driving industrial loads. The PIC16C55A is rated for 5V operation only and does not support the wider voltage range of later Flash-based PIC16F parts. This page synthesizes distributor pricing, drop-in pin-compatible alternatives within the PIC16C5X family, lifecycle status, and practical design notes not consolidated in any single manufacturer document.

見積もり お問い合わせ
PIC16C55A-20I/SS - 8-Bit 20MHz 768B OTP MCU SSOP-28 | Microchip
PIC16C55A-20I/SS

PIC16C55A-20I/SS - 8-Bit 20MHz 768B OTP MCU SSOP-28 | Microchip

The Microchip Technology PIC16C55A-20I/SS is an 8-bit CMOS ROM-based microcontroller from the PIC16C5X family, delivering 20MHz maximum clock speed with 768 bytes (512 x 12) of One-Time-Programmable (OTP) program memory in a 28-pin SSOP package. The device provides 24 bytes of RAM, 20 digital I/O lines, and is rated for industrial temperature operation from -40C to +85C. According to the Microchip product page, this part carries a "Not Recommended for new designs" status, meaning it remains available for legacy maintenance but Microchip directs new designs to the Flash-based PIC16F5X family. An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory, working RAM, and peripheral I/O on one die. The PIC16C5X family implements a RISC Harvard architecture with 12-bit-wide instructions and an 8-bit-wide data path, achieving approximately 2:1 code compression over other 8-bit MCUs in its class. Within the broader microcontroller hierarchy, the PIC16C55A belongs to the mid-range 8-bit category, positioned between baseline PIC10/12/16 devices and 16-bit PIC24/dsPIC families. OTP program memory allows one-time factory or field programming using a device programmer such as the MPLAB PM3, making the part cost-optimized for high-volume fixed-function products. Key features of the PIC16C55A-20I/SS include a 20MHz maximum operating frequency, 24-byte general-purpose RAM, 20 bidirectional I/O pins, one 8-bit real-time clock/counter (TMR0), Power-On Reset (POR), Watchdog Timer (WDT), and a two-level hardware stack supporting direct, indirect, and relative addressing modes. Seven or eight special-function hardware registers manage peripheral control. The 28-pin SSOP package provides compact surface-mount integration at approximately 5.3mm body width, well-suited for space-constrained designs. The PIC16C55A uses a RISC architecture executing most instructions in a single cycle, with a 12-bit instruction word and 33 single-word instructions. This compact instruction set yields high code density, reducing total program memory requirements and overall system cost. The two-level hardware stack limits call depth to two levels, which constrains interrupt-driven or deeply nested subroutine architectures but is adequate for simple sequential control loops. Typical applications include appliance control, industrial sensor interfaces, simple motor drivers, LED controllers, consumer electronics, automotive subsystems (non-safety), battery chargers, and any cost-sensitive embedded system where the OTP memory model fits the production volume profile. The industrial temperature grade extends applicability to factory automation, HVAC controls, and outdoor equipment. When designing with this device, plan for the two-level hardware stack limitation, the OTP memory programming workflow (which requires a device programmer and cannot be re-flashed in-circuit), and the legacy lifecycle status. For new designs, evaluate Flash-based PIC16F5X equivalents that provide in-circuit programmability and longer-term supply assurance.

見積もり お問い合わせ
PIC16C55A-40/P - 8-Bit OTP MCU 40MHz 768B | Microchip | 28-PDIP
PIC16C55A-40/P

PIC16C55A-40/P - 8-Bit OTP MCU 40MHz 768B | Microchip | 28-PDIP

The Microchip Technology PIC16C55A-40/P is an 8-bit RISC microcontroller from the PIC16C5X family, featuring 768 bytes of One-Time-Programmable (OTP) program memory organized as 512 x 12 words, 32 bytes of RAM, and a maximum clock frequency of 40 MHz. It is housed in a 28-pin Plastic DIP (PDIP) through-hole package with a 0.600 inch (15.24 mm) row spacing, making it suitable for legacy through-hole designs, prototyping, and industrial control boards. What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a family of 8-bit Harvard-architecture RISC microcontrollers originally developed by General Instrument's microelectronics division and later popularized by Microchip Technology. PIC microcontrollers occupy the hypernym hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. They are widely used in embedded systems for their low cost, simple instruction set, deterministic timing, and broad peripheral integration. Key features of the PIC16C55A include a 12-bit instruction word delivering 2:1 code compression versus competitors in its class, 20 I/O pins, a watchdog timer, power-on reset, and an operating voltage range of 3.0 V to 5.5 V. The 40 MHz speed grade denotes the maximum oscillator frequency; the instruction cycle is one quarter of the oscillator frequency (4 MHz instruction rate at 40 MHz clock). The PIC16C55A is built on a CMOS process with EPROM/OTP program memory, delivering approximately an order-of-magnitude higher performance than its 8-bit competitors in the same price category. The device supports commercial temperature grades (0C to +70C) and is targeted at cost-sensitive, high-volume embedded applications. Typical applications include simple motor control, appliance control, automotive body electronics (non-safety), remote transmitters, sensor interfaces, and consumer electronics where proven 8-bit performance is sufficient. The 28-PDIP package enables hand-soldering and socket replacement, simplifying prototyping and field service. When designing with this part, note that the OTP memory cannot be re-programmed in-circuit. Engineers evaluating modern replacements should consider the PIC16F54 or PIC16F57 in PDIP packages, which offer Flash memory for iterative development while sharing code compatibility. This page synthesizes distributor pricing, lifecycle status, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

見積もり お問い合わせ
PIC16C55A-40/SS - 8-bit 40MHz OTP MCU, 768B Code | Microchip
PIC16C55A-40/SS

PIC16C55A-40/SS - 8-bit 40MHz OTP MCU, 768B Code | Microchip

The Microchip Technology PIC16C55A-40/SS is an 8-bit RISC-based OTP (One-Time Programmable) microcontroller from the PIC16C5X family, featuring 768 bytes of program memory, 24 bytes of RAM, and 20 I/O pins, operating at up to 40 MHz clock frequency and housed in a 28-pin SSOP (Shrink Small Outline Package) with gull-wing leads. It belongs to Microchip's baseline PIC family, the industry's first 8-pin to 28-pin family of microcontrollers, designed for cost-sensitive embedded applications with simple control tasks. What is a microcontroller (MCU)? A microcontroller is a single-chip computer that integrates a CPU core, memory (program + data), and peripheral interfaces (I/O, timers, etc.) into one IC. Within that hierarchy, the PIC16C5X sits in the baseline 12-bit-instruction family, which later expanded into the enhanced mid-range (14-bit) and PIC18 (16-bit) families. The 12-bit wide instructions deliver high code density - typically 2:1 compression versus competing 8-bit MCUs - allowing more functionality to fit in the small on-chip OTP memory. Key features of the PIC16C55A-40/SS include 768 bytes of EPROM program memory (OTP), 24 bytes of data RAM, a 4 MHz internal RC oscillator option (selected at programming), a 40 MHz maximum external clock input, and 20 bidirectional digital I/O pins across two ports (RA, RB). The device has only 28 instructions, enabling fast learning curves, and provides a watchdog timer with on-chip RC oscillator for reliable unattended operation. Architecturally, the PIC16C55A uses a Harvard architecture with separate program and data buses, a single accumulator-based ALU, and a deep hardware stack for subroutine nesting. The 12-bit instruction width and 8-bit data path balance code density against silicon cost, which is why this family remains popular in high-volume appliance and consumer products where BOM cost dominates. Typical applications include remote controls, small appliance controllers (toasters, coffee machines, fan controllers), security keypads, sensor signal conditioning, LED chaser/sequencer lights, and simple battery-operated toys. Its 20 I/O pins are sufficient to scan 4x4 keypads while driving multiplexed displays. When designing with this part, plan for one-time programming: the EPROM memory cannot be erased. For prototype work, use a windowed (JW) variant or a pin-compatible Flash MCU (PIC16F) for in-circuit reprogramming. The 28-pin SSOP footprint is shared with the PIC16C55, PIC16C554, and PIC16C558 families, simplifying PCB layout reuse across product variants. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes - information not consolidated on any single distributor or manufacturer page. All specifications are sourced from the Microchip PIC16C55A datasheet and distributor listings verified as of 2026-09-16.

見積もり お問い合わせ
PIC16C55AT-04/SO - 8-Bit 4MHz OTP MCU 768B | Microchip
PIC16C55AT-04/SO

PIC16C55AT-04/SO - 8-Bit 4MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55AT-04/SO is an 8-bit RISC microcontroller from the PIC16C5X family, featuring 768 bytes (512 x 12) of One-Time-Programmable (OTP) program memory, 24 bytes of RAM, and 20 digital I/O pins. The device operates from a single 5V supply and runs at a 4 MHz oscillator frequency in a 28-pin SOIC wide-body package supplied on tape-and-reel. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and I/O peripherals on a single silicon die. The PIC16C5X family uses a 12-bit-wide instruction word with a RISC (Reduced Instruction Set Computer) architecture that delivers roughly 2:1 code compression versus other 8-bit MCUs in its class, enabling simpler firmware development. Within the broader taxonomy, this part is a microcontroller (MCU) -> embedded controller -> semiconductor device, designed for cost-sensitive embedded control where deterministic instruction timing and minimal external components are priorities. Key features of the PIC16C55AT-04/SO include a 4 MHz internal/external clock input, 33 single-word instructions, a two-level hardware stack, 20 bidirectional I/O pins organized into three ports (RA, RB, RC), and a programmable Watchdog Timer (WDT) with on-chip RC oscillator. The OTP program memory is programmed once via Microchip's standard ICSP-compatible serial programming interface. Power consumption is typically 2 mA at 5V/4 MHz, with sleep/idle current under typical CMOS standby levels. The device is built on a baseline PIC architecture using static CMOS logic, meaning the clock can be stopped without losing internal register state - useful for power-saving designs. It supports interrupt-driven control via the global interrupt enable and individual peripheral flags, and includes a Power-on Reset (POR), power-up Timer (PWRT), and Oscillator Start-up Timer (OST) for reliable cold-start behavior without external reset circuitry. Typical applications include appliance control, automotive body electronics (non-safety), LED display drivers, simple sensor interfaces, and remote transmitters/receivers. The wide SOIC-28 footprint is suitable for hand-soldered prototypes as well as high-volume SMT production lines. When designing with the PIC16C55AT-04/SO, note that OTP memory cannot be erased or reprogrammed - firmware bugs require physical part replacement. Engineers targeting field updates should consider the flash-based PIC16F5X family instead. The /SO suffix indicates the SOIC-28 wide-body tape-and-reel packaging for SMT assembly. This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet, helping engineers source and integrate this legacy OTP MCU efficiently.

見積もり お問い合わせ
PIC16C55AT-04/SS - 8-bit OTP MCU 768B 20 I/O 4MHz SSOP-28 | Microchip
PIC16C55AT-04/SS

PIC16C55AT-04/SS - 8-bit OTP MCU 768B 20 I/O 4MHz SSOP-28 | Microchip

The Microchip Technology PIC16C55AT-04/SS is a member of the PIC16C5X family of low-cost, high-performance 8-bit fully-static EPROM/ROM-based CMOS microcontrollers. Housed in a 28-pin SSOP package (0.209", 5.30 mm width), it integrates 768 bytes of One-Time-Programmable (OTP) program memory organized as 512 x 12, 24 bytes of data RAM, and 20 digital I/O pins. The device operates from a 3 V to 6.25 V supply and runs at a maximum clock speed of 4 MHz, executing most instructions in a single 250 ns cycle. What is an 8-bit OTP microcontroller? An 8-bit OTP MCU is a small, fixed-instruction-set processor whose program memory can be written exactly once (One-Time-Programmable) using an EPROM-style bit cell. The "8-bit" designation refers to the width of the ALU and the data bus; the PIC16C5X family uses a 12-bit-wide instruction word to achieve 2:1 code compression over competing 8-bit MCUs. In the broader taxonomy, OTP microcontrollers sit between mask-ROM MCUs (cheapest at high volume) and Flash MCUs (re-programmable, higher cost per bit). They are favored for cost-sensitive, high-volume, stable-firmware applications. Key features include a RISC architecture with only 33 single-word/single-cycle instructions, an 8-bit timer/counter, a watchdog timer for reliable operation, and a power-saving SLEEP mode. The device is built on a CMOS process that yields low power consumption and high noise immunity. It supports in-circuit serial programming through Microchip's standard tools and is compatible with the PICSTART Plus and MPLAB development environments, allowing the same firmware to migrate across the PIC16C5X family. Typical applications for the PIC16C55AT-04/SS include low-end consumer appliances, automotive sub-systems (body controllers, lighting drivers), industrial control loops, sensor interfaces, and remote-control transmitters. The 20 I/O pins are well-suited to keypad scanning, LED matrix driving, and small-stepper or DC-motor control via external drivers. The industrial-grade temperature range and SSOP footprint also enable space-constrained designs. When designing with this device, allocate I/O pins carefully because the PIC16C5X has a fixed 12-bit program word and limited RAM (24 bytes); high-volume data structures should be stored in program memory using RETLW lookup tables. Place a 0.1 microfarad decoupling capacitor within 5 mm of VDD and use the on-chip oscillator with a 4 MHz crystal or ceramic resonator; bypass the MCLR pin according to the datasheet to ensure a clean reset. This page synthesizes distributor pricing, drop-in alternatives from the same PIC16C5X family, and practical design notes that complement the manufacturer datasheet.

見積もり お問い合わせ
PIC16C55AT-04E/SO - 8-Bit 4MHz OTP MCU 28-SOIC | Microchip
PIC16C55AT-04E/SO

PIC16C55AT-04E/SO - 8-Bit 4MHz OTP MCU 28-SOIC | Microchip

The Microchip Technology PIC16C55AT-04E/SO is an 8-bit PIC microcontroller from the PIC16C5X family, featuring a RISC CPU core operating at 4 MHz, 768 bytes (512 x 12) of One-Time-Programmable (OTP) EPROM program memory, and 25 bytes of RAM, housed in a 28-pin SOIC wide-body package. Operating from 3.0 V to 5.5 V and -40 C to +125 C, it delivers deterministic performance for embedded control applications. Tape-and-reel suffix ("/SO") indicates the factory packaging form for high-volume SMT assembly lines. An 8-bit OTP microcontroller is a single-chip computer built around an 8-bit data path with non-volatile program memory that can be written exactly once via EPROM programming. In the system hierarchy, OTP MCUs sit below flash-based MCUs (re-programmable) and above mask-ROM MCUs (factory-programmed), within the broader category of microcontrollers, embedded controllers, and finally semiconductors. The PIC16C5X family pioneered Microchip's baseline RISC architecture with 12-bit wide instructions yielding 2:1 code compression versus 8-bit competitors. Key features include 20 digital I/O pins, a hardware timer/counter, watchdog timer, power-on reset, brown-out detection, and low-power SLEEP mode. The fully static CMOS design eliminates the need for a continuous clock and supports DC operation down to zero frequency, allowing the device to wake from interrupts for ultra-low standby power. The 12-bit instruction set is highly orthogonal, reducing development time and code density. The device employs a Harvard architecture with separate program and data buses, single-cycle instructions (except program branches which take two), and a four-stage pipeline. The 4 MHz clock with 250 ns instruction cycle delivers up to 4 MIPS throughput, sufficient for sensor reading, simple actuator control, and user-interface tasks in cost-sensitive embedded products. Typical applications include industrial control, consumer electronics, automotive body and convenience subsystems, and white-goods appliance controllers. The 28-SOIC footprint is well suited for hand-soldered prototypes as well as high-volume pick-and-place production. When designing, allocate one port pin to MCLR, leave adequate decoupling on VDD/VSS, and verify timing budgets using worst-case 4 MHz oscillator tolerance. The 'E' suffix denotes the extended temperature grade (-40 C to +125 C), required for automotive and industrial environments. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

見積もり お問い合わせ
PIC16C55AT-04E/SS - 8-bit 4MHz OTP MCU 768B | Microchip
PIC16C55AT-04E/SS

PIC16C55AT-04E/SS - 8-bit 4MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55AT-04E/SS is an 8-bit EPROM/ROM-based CMOS microcontroller from the PIC16C5X family, operating at up to 4 MHz with 768 bytes (512 x 12) of One-Time Programmable (OTP) program memory and 25 bytes of RAM in a 28-pin SSOP package. The extended (-E) temperature grade and tape-and-reel (T) suffix make this variant suitable for industrial-grade surface-mount designs and high-volume automated assembly. Core architecture delivers RISC performance with 33 single-word instructions, 12-bit-wide instruction words, and 8-level deep hardware stack. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. Within the broader semiconductor taxonomy it sits below microprocessors (no on-chip memory) and above digital signal processors (no general-purpose I/O model). The PIC16C5X family is positioned as a low-cost, high-performance baseline 8-bit MCU family. Program memory is OTP (one-time programmable) EPROM rather than flash, which reduces per-unit cost in mature, code-stable applications but requires masked-ROM or windowed-EPROM alternatives for prototyping or low-volume runs. Key features include 20 general-purpose digital I/O pins arranged across ports A and B, an integrated Watchdog Timer (WDT) with on-chip RC oscillator for reliable operation, a Power-On Reset (POR) circuit, and a 4 MHz internal/external clock domain. The device operates from 2.5 V to 6.25 V across the extended -40C to +125C industrial temperature range. The 28-SSOP package has 5.30 mm body width and gull-wing leads compatible with standard surface-mount reflow profiles. Designers choose this part for cost-sensitive embedded control loops where 768 bytes of code are sufficient - appliance timers, remote-control transmitters, low-end sensor interfaces, simple motor controllers, and battery-powered instrumentation. The RISC core delivers deterministic instruction timing that simplifies real-time scheduler design. Because program memory is OTP EPROM, code must be fully validated before programming - this part is a production-only choice rather than a development platform. When using the PIC16C55AT-04E/SS, observe the 4 MHz maximum clock frequency at 5 V supply - derate to 2 MHz at 2.5 V operation per Microchip datasheet curves. The WDT must be disabled in software (OPTION register) if not used, otherwise it can cause unintended resets. Decouple VDD with a 0.1 microfarad ceramic capacitor placed within 5 mm of the supply pin. This page synthesizes distributor pricing, drop-in compatible same-footprint alternatives, and engineering guidance not collected in the manufacturer datasheet alone. Cross-brand pin-compatible equivalents are flagged where they exist on the open market.

見積もり お問い合わせ
PIC16C55AT-04I/SS - 8-bit 4MHz 768B OTP MCU SSOP-28 | Microchip
PIC16C55AT-04I/SS

PIC16C55AT-04I/SS - 8-bit 4MHz 768B OTP MCU SSOP-28 | Microchip

The Microchip Technology PIC16C55AT-04I/SS is a member of the PIC16C5X family of low-cost, high-performance, 8-bit, fully static, EPROM/OTP-based CMOS microcontrollers, packaged in a 28-pin SSOP (Shrink Small Outline Package). It features a maximum clock frequency of 4 MHz, 768 bytes of OTP program memory, 24 bytes of data RAM, and 20 digital I/O pins. The 'I' suffix denotes an industrial temperature range of -40C to +85C, while the 'T' suffix indicates tape and reel packaging, and the '/SS' suffix marks the SSOP-28 package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals. The PIC16C5X family uses a RISC architecture with only 33 single-word/single-cycle instructions, placing it within the broader taxonomy of microcontroller -> embedded processor -> semiconductor device. MCUs serve as the decision-making core in countless embedded systems, replacing discrete logic and reducing BOM cost while adding reprogrammability. Key features of the PIC16C55AT-04I/SS include 12-bit wide instructions that yield 2:1 code compression versus competing 8-bit architectures, an operating voltage range of 3.0 V to 6.25 V, a wide operating temperature range, and low power consumption typical of CMOS designs. The device provides 20 bidirectional I/O pins and supports both internal and external reset options, making it adaptable to various embedded control scenarios. The PIC16C55AT-04I/SS uses a Harvard architecture with separate program and data buses, executed through a two-stage pipeline. With 768 bytes of OTP program memory and only 24 bytes of data RAM, this part is targeted at cost-sensitive, low-volume applications where Flash reprogrammability is unnecessary and one-time-programmable (OTP) memory is acceptable. The 4 MHz maximum clock provides instruction cycle times of 1 microsecond. Typical applications include appliance control, automotive subsystems, low-end consumer electronics, industrial control, and remote transmitters. The compact SSOP-28 footprint also makes it suitable for space-constrained designs. When designing with this device, note that the OTP memory cannot be erased or rewritten, so firmware must be fully validated before programming. Engineers should use the appropriate Microchip programmer (e.g., PICSTART Plus, MPLAB PM3) for device programming. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers and procurement teams a single source for evaluating the PIC16C55AT-04I/SS in new designs and legacy board reworks.

見積もり お問い合わせ
PIC16C55AT-20/SO - 8-bit 20MHz OTP MCU 768B | Microchip
PIC16C55AT-20/SO

PIC16C55AT-20/SO - 8-bit 20MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55AT-20/SO is an 8-bit RISC microcontroller from the PIC PIC® 16C family, delivering 20 MHz CPU performance with 768 bytes (512 x 12) of One-Time-Programmable (OTP) program memory in a 28-pin SOIC wide-body package (0.295-inch / 7.50 mm width). A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (RAM/ROM/Flash/OTP), and peripherals on one die, designed to execute embedded control tasks in a wide range of products. The PIC16C5X series sits in the MCU taxonomy as an 8-bit RISC MCU, beneath 16-bit PIC24 and 32-bit PIC32 architectures, and is widely used in cost-sensitive and legacy industrial/commercial control applications where deterministic 12-bit wide instruction execution offers 2:1 code compression over competing 8-bit MCUs. Key features include 24 bytes of RAM, 20 general-purpose I/O pins, a 4.0 oscillator configuration supporting XT/RC/LP/HS modes, a single 8-bit timer/counter, and a watchdog timer for reliable unattended operation. The 'T' suffix denotes tape-and-reel packaging, '-20' specifies 20 MHz maximum operating frequency, and the industrial/commercial temperature range supports 4.5V to 5.5V operation. The PIC16C5X core uses a 12-bit instruction word with a two-stage pipeline, allowing most instructions to execute in a single 200 ns instruction cycle at 20 MHz. The OTP program memory is programmed once and cannot be erased, making the device suitable for volume production but not for prototyping. Per Microchip compatibility documentation, the PIC16C55A shares the same 28-pin pinout as the PIC16C54, PIC16C54A, PIC16C54C, PIC16C55, PIC16C56, PIC16C57, PIC16C58 and PIC16C554/558 devices, enabling PCB reuse across memory-size variants. Typical applications include appliance control, automotive body modules, security panels, remote sensors, lighting controllers, and low-cost industrial automation. The 20 I/O pins are sufficient to drive LED indicators, scan keypads, and interface to relays or triac-driven loads directly or via transistors. When designing with this MCU, ensure your compiler/toolchain targets the PIC16C5X architecture (e.g., MPLAB XC8 in baseline mode) and that the OTP programming step is integrated into your manufacturing flow. Watchdog timer enable is recommended for any system that may experience ESD, brownout, or supply transients that could halt the CPU. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not aggregated on any single manufacturer or distributor page.

見積もり お問い合わせ
PIC16C55AT-20E/SO - 8-Bit 20MHz OTP MCU 768B | Microchip
PIC16C55AT-20E/SO

PIC16C55AT-20E/SO - 8-Bit 20MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55AT-20E/SO is an 8-bit PIC microcontroller IC based on the PIC16C5X family, featuring a 20MHz maximum clock speed, 768 bytes of One-Time Programmable (OTP) program memory organized as 512 x 12, and packaged in a 28-pin SOIC (7.50mm/0.295" width). This T&R-reel ('T') part ships with the automotive 'E' temperature grade designation and is suitable for cost-sensitive embedded control applications where a simple RISC core, small memory, and minimal external components are required. A PIC microcontroller (Programmable Interface Controller) is a family of low-cost, high-performance, 8-bit fully static, EPROM/ROM-based CMOS microcontrollers built around a Reduced Instruction Set Computer (RISC) architecture. Within the broader semiconductor taxonomy, a PIC MCU belongs to: microcontroller -> embedded processor -> integrated circuit -> semiconductor device. The PIC16C5X family pioneered Microchip's OTP and windowed EPROM product lines, offering a Harvard architecture with separate program and data buses for predictable instruction timing. Key differentiating features include 768 bytes of OTP program memory (sufficient for ~512 single-word instructions), 25 bytes of general-purpose RAM, and a 12-bit instruction word. The part operates from a 5V supply at 20MHz, supports the standard 28-pin PIC16C5X peripheral set (I/O ports, Timer0, watchdog timer), and provides the extended automotive temperature profile indicated by the 'E' suffix in the order code. Technically, the PIC16C55A employs a RISC core with a fixed 12-bit instruction set, a 2-level hardware stack, and direct/indirect addressing modes. Its 8-bit ALU, working register (W), and 25-byte register file are mapped into a single linear address space, simplifying compiler code generation. The device's low power consumption and CMOS static design allow operation across the full industrial/automotive temperature range, with all I/O pins capable of sourcing/sinking typical CMOS loads. Typical applications include automotive body controllers, simple sensor interfaces, appliance control boards, LED drivers, hobbyist/educational development platforms, and replacement of legacy 8051 designs. The 28-SOIC footprint allows hand-soldering and breadboard-friendly prototyping in low-volume production. When designing with this part, plan for OTP-only programming: code must be fully verified before programming, as OTP cannot be erased. Place a 0.1uF decoupling capacitor as close as possible to VDD/VSS, and ensure MCLR is held high during normal operation. For new designs, modern Flash-based PIC16F equivalents offer reprogrammability at similar cost. This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes not found in the standalone Microchip datasheet, with focus on automotive-temperature PIC16C5X family variants.

見積もり お問い合わせ
PIC16C55AT-20E/SS - 8-Bit OTP MCU, 768B, 20MHz, 28-SSOP | Microchip
PIC16C55AT-20E/SS

PIC16C55AT-20E/SS - 8-Bit OTP MCU, 768B, 20MHz, 28-SSOP | Microchip

The Microchip Technology PIC16C55AT-20E/SS is an 8-bit EPROM/ROM-based CMOS microcontroller from the PIC16C5X family, delivering 768 bytes of OTP program memory (organized as 512 x 12 bits) and 25 bytes of RAM in a 28-pin SSOP package. It operates at 20 MHz, runs on a 5 V supply, and integrates Power-On Reset (POR) and a Watchdog Timer (WDT) for embedded control reliability. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral set into one IC. The PIC16C5X family belongs to the 8-bit MCU hierarchy (8-bit -> CISC/RISC MCU -> microcontroller -> embedded controller -> semiconductor IC). These devices target cost-sensitive, deterministic control tasks where a full 16- or 32-bit MCU would be overkill. Key features include 20 I/O pins, an instruction set optimized for code density (12-bit wide instructions giving roughly 2:1 compression over competing 8-bit MCUs), and a fully static CMOS core that supports operation down to DC. The OTP (One-Time Programmable) program memory allows factory or low-volume programming at low unit cost. Technically, the device uses a Harvard architecture with separate program and data buses. Its 20 MHz oscillator produces a 200 ns instruction cycle, and the wide-instruction design means each opcode carries both operation and operand in one fetch, yielding high throughput per MHz. Brown-out and power-on reset plus WDT give it tolerance to harsh industrial supply environments. Typical applications include appliance controls, simple sensor interfaces, LED driver sequencers, and low-cost consumer white goods where deterministic response and minimum external components matter more than raw MIPS. When designing, ensure the EPROM programming window (if used for windowed parts) is covered with opaque tape, and verify timing budgets against the 200 ns instruction cycle. This page synthesizes distributor stock, parametric drop-in alternatives, and practical SSOP layout notes beyond the bare Microchip datasheet.

見積もり お問い合わせ
PIC16C55AT-40/SO - 8-Bit 40MHz OTP MCU, 768B | Microchip
PIC16C55AT-40/SO

PIC16C55AT-40/SO - 8-Bit 40MHz OTP MCU, 768B | Microchip

The Microchip Technology PIC16C55AT-40/SO is an 8-bit PIC16C5x family CMOS microcontroller built around a RISC core that executes most instructions in a single 100 ns cycle at 40 MHz. It integrates 768 bytes of One-Time Programmable (OTP) EPROM program memory organized as 512 x 12-bit words, 25 bytes of general-purpose RAM, and 20 digital I/O lines in a 28-pin SOIC (SO) package with gull-wing leads. The 'T' suffix denotes tape-and-reel packaging, while the '40' denotes the 40 MHz maximum oscillator frequency and the '/SO' suffix denotes the 28-SOIC wide-body package. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals; the PIC16C5x family is one of Microchip's foundational 8-bit baseline architectures using a Harvard structure with separate program and data paths. The OTP variant is intended for low-volume, cost-sensitive, or prototype applications where firmware is fixed at production and field re-programmability is not required, distinguishing it from flash-based PIC16F equivalents. Key features include 12-bit instruction width, a 33-instruction set, two hardware timers (8-bit RTCC and Watchdog Timer with on-chip RC oscillator), Power-On Reset (POR), Device Reset Timer (DRT), programmable code protection, and a wide 3.0 V to 6.0 V operating range with low-power CMOS construction. With 20 I/O pins capable of sourcing/sinking up to 25 mA per pin, the device can directly drive LEDs, relays, and small solenoids without external buffers. The PIC16C55A employs a fully static CMOS design with a 4-phase on-chip oscillator circuit supporting crystal, ceramic resonator, or external clock drive. Its RISC architecture delivers roughly 5 MIPS peak throughput at 40 MHz while consuming only a few milliamps, which suits battery and bus-powered industrial nodes. The Harvard bus prevents program-memory fetches from colliding with data accesses, simplifying real-time interrupt handling. Typical applications include appliance controls, security-system keypads, automotive body controllers, HVAC fan/valve drivers, and simple sensor interfaces. The OTP memory and -40C to +85C commercial/extended temperature grade make the part a fit for fixed-function embedded logic rather than firmware-upgradable IoT nodes. The 28-SOIC footprint is widely accepted in through-hole-replacement industrial designs. When designing with this part, place a 0.1 uF decoupling capacitor within 5 mm of VDD and tie the MCLR pin through the recommended 10 kohm pull-up, observing Microchip AN585 for oscillator-layout best practices. Note that OTP memory can be programmed only once, so production firmware must be fully validated before commitment. This page synthesizes distributor pricing, lifecycle context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

見積もり お問い合わせ
PIC16C55T-10/SO - 10MHz 8-Bit OTP MCU, 28-SOIC | Microchip
PIC16C55T-10/SO

PIC16C55T-10/SO - 10MHz 8-Bit OTP MCU, 28-SOIC | Microchip

The Microchip Technology PIC16C55T-10/SO is an 8-bit RISC microcontroller from the legacy PIC16C5x family, featuring a 10 MHz core clock speed, 768 bytes of OTP program memory (organized as 512 x 12-bit words), and approximately 24-25 bytes of data RAM, all housed in a 28-pin SOIC (7.50 mm width, "SO") surface-mount package supplied on tape and reel ("T"). An 8-bit microcontroller (MCU) is a single-chip computer containing an 8-bit CPU core, program memory, data RAM, I/O peripherals, and timers on a single die; it belongs to the broader taxonomy microcontroller -> embedded processor -> semiconductor device, and sits at the foundation of nearly every modern embedded system from toys to industrial controllers. The PIC16C5x family is the original Microchip baseline-architecture MCU family and is targeted at cost-sensitive, low-pin-count embedded control. Key features include Harvard-architecture 12-bit wide instruction set delivering approximately 2:1 code compression over typical 8-bit CISC competitors, a 33-instruction set reducing development time, an operating voltage range of 4.5V to 5.5V (commercial grade; -40C to +85C for "I" parts), an internal oscillator option, a watchdog timer, and a power-on reset circuit. The 28-SOIC package supports both commercial ("-10") and industrial ("-10I") temperature grades. The PIC16C55T-10/SO uses a RISC CPU with two-stage pipeline (fetch/execute) and a 12-bit program word that allows most instructions to execute in a single 200 ns instruction cycle at 10 MHz. The OTP (one-time programmable) program memory is programmed via Microchip's standard ICSP serial programming interface; this means the part cannot be re-programmed in-circuit once the EPROM cells are blown, making it suited for mature, frozen-cost production. Typical applications include industrial control logic, simple appliance controllers, low-end consumer electronics, automotive body controllers, LED display drivers, and replacement of discrete logic in glue-repair designs. The combination of low cost, small package, and mature tooling makes it a long-tail favorite for sustaining production of legacy products. When designing with this part, note that OTP memory means firmware bugs cannot be patched in the field; engineers usually prototype with a windowed JW part (PIC16C55/JW) before committing to the OTP SOIC variant. Always reserve ICSP pins for in-system programming during development. This page synthesizes distributor pricing as of 2026-09-16, verified drop-in same-brand alternatives (PIC16C55-10/SO, PIC16C55T-10I/SO, PIC16C55AT-04/SS, etc.) sourced from the Microchip PIC16C5x family pin-compatibility chart, and practical design notes not consolidated in any single distributor page.

見積もり お問い合わせ
PIC16C55T-10/SS - 8-Bit 10MHz OTP MCU 768B | Microchip
PIC16C55T-10/SS

PIC16C55T-10/SS - 8-Bit 10MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55T-10/SS is an 8-bit RISC microcontroller from the PIC16C5X family, featuring a 10 MHz maximum clock speed, 768 bytes (512 x 12) of One-Time Programmable (OTP) program memory and 25 bytes of data RAM, housed in a 28-pin SSOP (5.30 mm body width) surface-mount package. The "T" suffix indicates Tape & Reel packaging and the "-10" speed grade denotes the 10 MHz operating frequency, while the "/SS" suffix identifies the 28-SSOP package option. An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory, data RAM, I/O peripherals and often timers on a single die. The PIC16C5X family belongs to the broader category of microcontrollers (MCU), which themselves sit within the integrated circuit (IC) and embedded system taxonomy. 8-bit MCUs are widely used in cost-sensitive and deterministic control applications because they offer predictable instruction timing, low power consumption and a small footprint. Microchip's PIC architecture uses a RISC-style 12-bit instruction word with 33 single-word/single-cycle instructions, delivering roughly 2:1 code compression over competitive 8-bit MCUs. Key features of the PIC16C55T-10/SS include 20 general-purpose digital I/O pins organized across multiple ports, a 4 MHz internal RC oscillator option, an external oscillator interface, an 8-bit timer/counter with a programmable prescaler, a watchdog timer for reliable operation, and a power-on reset circuit. The device operates from 2.5 V to 6.25 V across the industrial -40 C to +85 C temperature range and consumes very low operating current. The CMOS design provides fully static operation. Architecturally, the PIC16C55T-10/SS uses a Harvard architecture with separate program and data buses, a 12-bit program word and an 8-bit data path. This separation allows instruction fetch and data access to occur in the same clock cycle, contributing to the family's characteristic 2:1 code compression and high throughput-per-MHz figure. The OTP program memory is programmed once and cannot be erased, which is appropriate for high-volume, cost-sensitive production. Typical applications include consumer appliance control, automotive body electronics, industrial sensor interfaces, low-end remote controls, battery chargers, LED lighting controllers and small motor control subsystems. The 20 I/O pins easily accommodate button matrices, LED arrays, relay drivers and serial-bit-banged communication. When designing with the PIC16C55T-10/SS, observe the 6.25 V absolute maximum VDD rating and place a 0.1 uF decoupling capacitor adjacent to the VDD pin. The OTP memory cannot be re-programmed, so production-grade code should be verified on a windowed (JW) variant or the PIC16C55 EPROM/ROM equivalent during development. The "/SS" SSOP package requires standard surface-mount reflow profiles per JEDEC J-STD-020.

見積もり お問い合わせ
PIC16C55T-10E/SO - 8-Bit 10MHz OTP MCU 768B | Microchip
PIC16C55T-10E/SO

PIC16C55T-10E/SO - 8-Bit 10MHz OTP MCU 768B | Microchip

The Microchip Technology PIC16C55T-10E/SO is an 8-bit RISC microcontroller from the PIC16C5X family, featuring a 10MHz CPU, 768 bytes (512 x 12 words) of One-Time Programmable (OTP) EPROM program memory, and 25 bytes of RAM, housed in a 28-pin SOIC (SO) wide-body package with gull-wing leads. The 'T' suffix indicates tape-and-reel packaging and the 'E' suffix denotes the extended industrial temperature grade of -40C to +125C, making it suitable for harsh-environment automotive and industrial applications. A PIC microcontroller is a low-cost, high-performance 8-bit fully-static CMOS MCU built on Microchip's Harvard RISC architecture. The PIC16C5X family delivers an order-of-magnitude higher performance than its competitors in the same price category. The 12-bit-wide instructions are highly symmetrical, producing a 2:1 code compression over other 8-bit microcontrollers in its class, and the easy-to-use, easy-to-remember instruction set reduces development time significantly. Within the broader taxonomy, PIC16C5X belongs to: microcontroller -> embedded MCU -> 8-bit MCU -> CMOS RISC MCU -> semiconductor IC. Key features include 20 general-purpose digital I/O pins organized across three I/O ports (RA, RB, RC), a 12-bit instruction word with 33 single-word instructions, a two-level deep hardware stack, and a programmable code-protection bit. Operating voltage spans 4.5V to 5.5V with low power consumption typical of CMOS designs. The 28-SOIC wide-body (7.50mm) footprint provides robust mechanical solder joints and is compatible with standard surface-mount assembly lines. The architecture uses a separate instruction and data bus (Harvard) with single-cycle instruction execution except for program branches, which take two cycles. The 8-bit data path and 12-bit program word provide an efficient code density rarely matched by 8-bit CISC alternatives. The integrated watchdog timer, power-on reset, and programmable oscillator selection reduce external component count for cost-sensitive embedded designs. Typical applications include automotive body controllers, sensor-interface modules, simple motor-control loops, appliance control boards, and any embedded system requiring reliable OTP-programmed logic at low unit cost. The extended temperature grade also suits industrial sensor hubs and outdoor equipment controllers. When designing with this part, ensure the OTP memory programming is performed before final PCB assembly, as OTP cannot be erased. Designers targeting field upgradability should consider the Flash-based PIC16F55 successor family; designers prioritizing lowest unit cost and long-term supply should keep the PIC16C55T-10E/SO in scope. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design guidance not aggregated on a single datasheet PDF, supporting faster sourcing decisions for the PIC16C5X family.

見積もり お問い合わせ
PIC16C55T-10E/SS - 8-Bit 10MHz OTP MCU, 768B | Microchip
PIC16C55T-10E/SS

PIC16C55T-10E/SS - 8-Bit 10MHz OTP MCU, 768B | Microchip

The Microchip Technology PIC16C55T-10E/SS is an 8-bit RISC CMOS microcontroller belonging to the PIC16C5X family, packaged in a 28-pin SSOP (5.30mm width) and supplied on tape-and-reel. According to Microchip product information, the device integrates a PIC CPU core running at a maximum clock frequency of 10 MHz, with 768 bytes of OTP program memory organized as 512 x 12 words. What is an 8-bit OTP microcontroller? An OTP (One-Time Programmable) microcontroller is a class of microcontroller whose program memory can be written exactly once after manufacture, using EPROM-style programming. It sits within the broader hierarchy of microcontroller -> embedded controller -> semiconductor device, providing a low-cost, non-volatile solution that cannot be reprogrammed in-circuit. Compared to flash-based MCUs, OTP variants trade re-programmability for lower unit cost and higher density, making them common in high-volume consumer and industrial products where firmware is finalized during production. Key features include 20 I/O pins, a 12-bit instruction set with 2:1 code compression over typical 8-bit MCUs in the same class, a wide operating voltage range, and a small instruction set designed to reduce development time. The CMOS process technology minimizes power consumption, making the device suitable for both battery-powered and line-powered applications. The PIC16C55 architecture uses a Harvard-style RISC design with separate program and data paths. Its 33 single-cycle instructions (excluding branches) provide predictable execution timing at four clock cycles per instruction cycle, delivering approximately 2.5 MIPS at 10 MHz. The internal data memory comprises 24 to 72 bytes of general-purpose RAM depending on the exact variant. Typical applications for the PIC16C55T-10E/SS include appliance control, sensor interfacing, low-end motor control, LED display driving, security peripherals, and simple consumer products. Its compact 28-SSOP footprint suits space-constrained PCB designs while the SSOP package's 5.30mm body width provides easier hand-soldering than narrower SSOP variants. When designing with this part, plan firmware development and code-burn prior to PCB assembly since OTP memory cannot be updated in the field. Use the 'E' (Extended) temperature grade for industrial environments. This page synthesizes distributor pricing, drop-in alternatives within the PIC16C5X family, and practical design notes not found in the manufacturer datasheet.

見積もり お問い合わせ
PIC16C55T-10I/SS - 8-Bit 10MHz PIC MCU 768B OTP 28-SSOP | Microchip
PIC16C55T-10I/SS

PIC16C55T-10I/SS - 8-Bit 10MHz PIC MCU 768B OTP 28-SSOP | Microchip

The Microchip Technology PIC16C55T-10I/SS is an 8-bit RISC microcontroller from the PIC16C5X family, delivering up to 10 MHz of CPU performance from a 512 x 12-bit (768-byte) One-Time Programmable (OTP) EPROM program store and 25 bytes of data RAM, packaged in a 28-pin Shrink Small-Outline Package (SSOP). It is supplied on a 5 V nominal rail and provides 20 digital I/O lines plus a single 8-bit timer, with Power-On Reset (POR) and a Watchdog Timer (WDT) for unattended operation. An 8-bit PIC microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, non-volatile program memory, volatile data RAM, digital I/O peripherals, and at least one timer onto one silicon die. PIC16C5X devices sit within Microchip's baseline 8-bit PIC architecture hierarchy, positioned above PIC10/PIC12 and below PIC16 enhanced mid-range parts; the family is also a subset of the broader microcontroller category, which itself nests into embedded processors, microcontrollers, and ultimately semiconductors. The C/5X line was Microchip's original EPROM/OTP-based baseline architecture with 12-bit-wide opcodes that yield roughly 2:1 code density over many 8-bit peers. Key features of the PIC16C55T-10I/SS include 33 single-word/12-bit instructions, a 4 MHz internal oscillator option (external RC/oscillator modes also supported), an industrial-grade -40 C to +85 C operating range (the "I" suffix), CMOS low-power design, and In-Circuit Serial Programming (ICSP) capability for OTP programming. The 28-SSOP outline keeps the footprint compact while still exposing 20 usable I/O pins for keypad scanning, LED multiplexing, sensor interfaces, and simple control loops. Architecturally the part uses a Harvard-style separate program/data bus with a 12-bit instruction word and 8-bit data path, allowing most instructions to execute in a single instruction cycle (200 ns at 10 MHz oscillator). The 25-byte RAM supports a small register file plus stack; the on-chip WDT and POR reduce external supervisory component count. Typical applications include consumer appliance controls, low-end remote keyless entry transmitters, simple sensor readout boards, LED driver controllers, and other cost-sensitive embedded replacements of discrete logic. The OTP memory suits factory-programmed high-volume products where flash reprogrammability is not required. Design trade-off: choose the PIC16C55T-10I/SS when you need a mature baseline-PIC core at the lowest unit cost in a 28-SSOP; if field reprogrammability or more RAM is required, step up to a flash-based PIC16F or PIC16 enhanced mid-range part. This page synthesizes distributor availability, same-package drop-in alternatives (including PIC16C55-10I/SS and PIC16C554T-04/SS), and practical OTP-MCU design notes not collected in the manufacturer datasheet.

見積もり お問い合わせ