Microcontroladores

Produtos (20.000+)

PIC17C766-16I/PT - 8-Bit 16MHz 32KB OTP MCU | Microchip
PIC17C766-16I/PT

PIC17C766-16I/PT - 8-Bit 16MHz 32KB OTP MCU | Microchip

The Microchip PIC17C766-16I/PT is a high-performance 8-bit CMOS EPROM-based microcontroller delivering 8.25 MIPS (121 ns instruction cycle) at a 33 MHz maximum clock input, packaged in an 80-pin TQFP (12x12 mm) industrial-temperature grade housing. The part integrates 32 KB of OTP program memory (16K x 16 words), 902 bytes of RAM, and 50+ general-purpose digital I/O lines with a 16-bit data bus architecture. According to the manufacturer product page, it supersedes earlier PIC16C5X/PIC16CXX devices while remaining upwards source-code compatible. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/OTP/Flash), data RAM, and peripheral I/O onto one silicon die. The PIC17C family sits at the top of Microchip's original 8-bit hierarchy, sitting above PIC16C and PIC12C in performance and pin count. Within the broader category tree, an MCU is a microcontroller -> embedded processor -> semiconductor IC -> electronic component. Microcontrollers like the PIC17C766 are the workhorse of industrial control, instrumentation, and legacy embedded designs. Key features include 16 channels of 10-bit Analog-to-Digital conversion, three PWM outputs, four capture inputs, additional timers, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. The device also integrates two USARTs and external memory addressing for program memory expansion beyond the on-chip 32 KB. The 58-instruction RISC instruction set keeps software development straightforward, with only program branches and table reads/writes being two-cycle; all other instructions execute in a single 121 ns cycle. The architecture uses a Harvard-bus layout with separate program and data paths, and a single-cycle hardware multiplier accelerates integer math. The wide operating voltage (4.5 V to 5.5 V) and industrial -40C to +85C temperature range enable deployment in factory-floor and outdoor equipment. The 80-pin TQFP package provides ample I/O for human-machine interface panels, motor controllers, and instrumentation front-ends. Typical applications include industrial process controllers, multi-channel data acquisition systems, motor control with PWM, legacy barcode/RF scanners, and automotive body/comfort modules. The external memory bus allows the PIC17C766 to drive character LCD panels and external EPROM/RAM for designs that exceed 32 KB of code. This page synthesizes distributor stock data, same-package drop-in alternatives, and practical design notes not available in the brief manufacturer summary. Note: The Microchip product page recommends PIC18F8520 as the Flash-based successor for new designs; the PIC17C766 remains in service for legacy and OTP-windowed applications.

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PIC17C766-33/PT - 8-Bit 33MHz OTP MCU, 32KB | Microchip
PIC17C766-33/PT

PIC17C766-33/PT - 8-Bit 33MHz OTP MCU, 32KB | Microchip

The Microchip Technology PIC17C766-33/PT is a high-performance 8-bit CMOS EPROM microcontroller in the PIC17C family, delivering 8.25 MIPS (121 ns instruction cycle) from a 33 MHz clock input. It integrates 32 KB (16K x 16) of One-Time-Programmable (OTP) program memory, 902 bytes of RAM, 50 digital I/O lines, and 16 channels of 10-bit Analog-to-Digital conversion, packaged in an 80-pin TQFP (12x12 mm) form factor. The part is pin-compatible with the 84-pin variants in the family and is designed for embedded control applications that require deterministic single-cycle execution and an extensive peripheral set. A microcontroller (MCU) is a single-chip computer that contains a CPU core, non-volatile program memory, working RAM, and configurable peripherals. The PIC17C family is Microchip's original high-end 8-bit architecture, sitting above the PIC16C5X and PIC16CXX families in performance and addressing capability, and is upwards compatible with their instruction sets. Within the broader taxonomy, the PIC17C766 is an EPROM/OTP microcontroller belonging to the 8-bit RISC microcontroller class, which falls under microcontrollers -> integrated circuits -> semiconductors. Key features include a single-cycle hardware multiplier, four capture inputs, three PWM outputs, an external memory interface, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. The device also integrates two USARTs for asynchronous or synchronous communication, eight timer/counter modules, a programmable brown-out reset, and a watchdog timer with its own on-chip RC oscillator. The 80-pin TQFP package provides commercial-grade (0C to +70C) operation and supports in-system programming through the standard PIC ICSP interface. Architecturally, the PIC17C766 uses a Harvard RISC design with a 16-bit instruction word and an 8-bit data path, which is the source of the often-cited '16-bit instruction, 8-bit data' labeling seen in datasheet snippets. The 33 MHz oscillator drives a four-phase internal clock that produces the 121 ns single-cycle instruction time, except for program branches and table reads/writes which take two cycles. This pipelined design gives the family its deterministic real-time behavior, which is a defining reason designers select it over CISC 8-bit parts. Typical applications include industrial automation controllers, motor control systems, building automation, instrumentation with analog front-ends, and embedded communication gateways. The 10-bit ADC with 16 input channels makes the part well-suited to multi-sensor data acquisition boards, while the dual USART and SPI/I2C peripherals support bridging between local sensor networks and external controllers. The OTP memory is appropriate for production-volume designs where the firmware is finalized before mask ROM or flash migration to PIC18F or dsPIC equivalents. When designing with this device, engineers should verify the 4.5V to 5.5V supply tolerance against any 3.3V peripherals, place a 0.1 uF decoupling capacitor close to each supply pin, and ensure the 33 MHz crystal or oscillator meets the AC electrical characteristics in the datasheet. New designs are encouraged to migrate to the recommended successor (PIC18F8520 per Microchip's product page) where possible, since the PIC17C family is no longer in active production. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC17C766-33E/L - 33MHz 8-bit OTP MCU 32KB | Microchip PLCC-84
PIC17C766-33E/L

PIC17C766-33E/L - 33MHz 8-bit OTP MCU 32KB | Microchip PLCC-84

The Microchip Technology PIC17C766-33E/L is an 8-bit RISC microcontroller from the PIC17C family, delivering up to 33MHz core speed and 8.25 MIPS of processing power, with 32KB (16K x 16) of one-time-programmable (OTP) program memory in an 84-pin PLCC package. The 'E' suffix denotes the Extended industrial temperature grade (-40C to +125C), and 'L' indicates the PLCC-84 package with J-leaded surface-mount terminations. It features a 16-bit data bus architecture and operates from a 4.5V to 5.5V single supply. An 8-bit microcontroller (MCU) is a small computer-on-a-chip built around a CPU, program memory, data RAM, and peripheral interfaces, optimized for embedded control. The PIC17C family sits in the taxonomy: MCU -> 8-bit MCU -> PIC microcontroller -> RISC MCU -> power management/control IC family. PIC MCUs use a Harvard RISC architecture with separate program and data buses, enabling single-cycle instruction execution and predictable interrupt latency. Key features include 58 single-word instructions for simplified programming, single-cycle execution at 121ns (except program branches and table reads/writes which take two cycles), 50 digital I/O pins for external interfacing, and an integrated peripheral set including timers, USART, and capture/compare/PWM modules. The PLCC-84 (Plastic Leaded Chip Carrier) package provides 84 J-bend terminations on a 29.31mm x 29.31mm body, suitable for socketed or reflow-soldered assembly. The PIC17C766 uses a high-performance 8-bit RISC CPU core with a 16-bit wide instruction word and a 16-bit-wide data path, providing 8.25 MIPS throughput. The OTP program memory allows one-time factory or field programming, and the wide instruction set enables compact code density. The device integrates multiple peripheral modules that reduce external component count for embedded applications. Typical applications include industrial automation controllers, automotive body and chassis electronics, HVAC control systems, embedded instrumentation, and legacy PIC-based products. It is also used in printer controllers, motor control boards, and display drivers. Microchip recommends the newer flash-based PIC18F8520 as the modern equivalent for new designs. Design considerations: OTP memory cannot be erased or reprogrammed; for in-system reprogrammability, migrate to the PIC18F8520. The PLCC-84 package requires a socket or carefully designed land pattern with adequate thermal relief for the 4.5-5.5V supply. Decoupling capacitors (100nF plus 10uF bulk) should be placed within 5mm of the VDD pins. This page synthesizes verified distributor pricing, pin-compatible alternatives, and practical design notes for engineers evaluating the PIC17C766-33E/L for legacy maintenance or new design work.

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PIC17C766-33E/PT - 8-bit 33MHz OTP MCU, 32KB Flash, 80-TQFP
PIC17C766-33E/PT

PIC17C766-33E/PT - 8-bit 33MHz OTP MCU, 32KB Flash, 80-TQFP

The Microchip Technology PIC17C766-33E/PT is a high-performance 8-bit CMOS EPROM/OTP microcontroller in an 80-pin TQFP (12x12 mm) surface-mount package, operating at 33 MHz with a 121 ns instruction cycle. It integrates 32 KB of OTP program memory (16K x 16 organization) and 902 bytes of RAM, supporting 58 single-word instructions executed in a single cycle except for program branches and table reads/writes, which take two cycles. The device is rated for 4.5 V to 5.5 V supply and an extended -40 C to +125 C automotive operating temperature range. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, and peripheral interfaces. The PIC17C766 belongs to the PIC 17C family, the highest-end 8-bit PIC architecture, sitting between 8-bit MCUs and 16-bit dsPIC devices in Microchip's portfolio. The family is upwards compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX devices, easing migration for existing code bases. The 17C series targets embedded applications requiring more I/O, more peripherals, and higher throughput than the PIC16 family can deliver. Key differentiating features include 66 digital I/O lines, four capture inputs, three PWM outputs, a 10-bit analog-to-digital converter with 16 input channels, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. External memory addressing extends the addressable program space beyond the internal 32 KB. Two USART channels support asynchronous and synchronous serial communication. Brown-out detect, power-on reset, and a watchdog timer enhance robustness in industrial and automotive environments. Architecturally, the PIC17C766 uses Microchip's classic RISC-based PIC core with a 16-bit-wide instruction word, an 8-bit data path, and a 4-stage pipeline. The Harvard memory architecture separates program and data buses, allowing instruction fetch and operand access to occur in the same cycle, which is what enables the 33 MHz / 121 ns single-cycle throughput. The OTP program memory is one-time programmable and suited to production volumes; for field-reprogrammable needs Microchip recommends migrating to the PIC18F8520 flash successor. Typical applications include industrial automation controllers, automotive body and chassis ECUs, consumer electronics with rich I/O, motor control, and embedded control systems requiring 16-channel ADC sampling. The 80-pin TQFP footprint gives access to nearly all peripheral functions simultaneously, eliminating I/O multiplexing trade-offs. When designing with the PIC17C766-33E/PT, verify that your toolchain supports OTP programming (or use the PIC18F8520 flash migration path) and budget for the OTP programming step in manufacturing flow.

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PIC17C766-33I/PT - 33MHz 8-bit OTP MCU 32KB | Microchip
PIC17C766-33I/PT

PIC17C766-33I/PT - 33MHz 8-bit OTP MCU 32KB | Microchip

The Microchip PIC17C766-33I/PT is a high-performance 8-bit CMOS EPROM/OTP microcontroller running at 33 MHz (121 ns instruction cycle) with 32 KB (16K x 16) of program memory, 902 bytes of RAM, and 66 I/O pins in an 80-pin TQFP (12x12 mm) package. The 'I' suffix denotes the industrial operating temperature range (-40C to +85C) and the /PT suffix indicates the TQFP package option. A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable peripherals. The PIC17C766 belongs to the PIC17C family, which is Microchip's high-end 8-bit architecture, and falls within the broader hierarchy: microcontroller -> embedded processor -> semiconductor. The 17C line pre-dates the still-active PIC18 family and is characterized by an 8.25 MIPS throughput, 58 single-word instructions, and a Harvard-style architecture with separate program and data buses. Key features include a single-cycle hardware multiplier, 8-bit data bus with a 16-bit instruction word (16-bit data bus width per the cross-reference listing), four 16-bit timers, four capture inputs, three PWM outputs, a 16-channel 10-bit A/D converter, an external memory interface, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. Two UART modules are also provided for asynchronous serial communication. The 10-bit A/D delivers 16 channels of analog input suitable for sensor interfaces and industrial control. Technically, the PIC17C766 uses a RISC-style instruction set with all instructions executing in a single cycle except program branches and table reads/writes (which take two cycles). The 33 MHz oscillator with a 4-clock PLL-style division yields the 121 ns instruction cycle. The wide 16-bit instruction word allows each opcode to carry an 8-bit literal operand, eliminating the need for many two-word instructions and keeping the code density competitive with 8-bit CISC parts. Typical applications include industrial automation and motor control (PWM + A/D feedback), HVAC controllers, sensor aggregation nodes that need 16 analog channels, and embedded control panels that require a large I/O count without resorting to a 16-bit MCU. The 902 bytes of RAM and external memory bus allow expansion for buffer-heavy protocols. The PIC17C766 is recommended for designs that need >50 I/O and >10 analog channels on a single 8-bit device. Because Microchip has formally recommended the PIC18F8520 as a newer replacement, expect PIC17C766 lifecycle to be NRND or mature - verify before starting new designs.

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PIC17C766/CL - 8-Bit 33MHz 32KB EPROM MCU | Microchip | 84-CERQUAD
PIC17C766/CL

PIC17C766/CL - 8-Bit 33MHz 32KB EPROM MCU | Microchip | 84-CERQUAD

The Microchip Technology PIC17C766/CL is an 8-bit, high-performance CMOS EPROM microcontroller operating at 33MHz and delivering 8.25 MIPS (121 ns instruction execution) within a 84-pin CERQUAD windowed ceramic package (29.21x29.21 mm). The device integrates 32KB of one-time-programmable EPROM program memory organized as 16K x 16, 902 bytes of general-purpose RAM, and 66 digital I/O lines, making it one of the highest-pin-count members of the legacy PIC17C family. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and configurable peripheral interfaces into one package. PIC microcontrollers follow a Harvard RISC architecture with separate program and data buses, and the PIC17C family sits at the high end of the original PIC16C5X/PIC16CXX lineage, expanding register width to 16 bits while preserving the 58-instruction opcode set that enables fast context switching. The PIC17C766 was targeted at complex embedded control tasks requiring simultaneous parallel I/O expansion and multiple serial communication channels (I2C, SPI, UART/USART). Key features include 33MHz maximum operating speed, 8.25 MIPS throughput, 32KB (16Kx16) EPROM program memory, 902 bytes of RAM, 66 I/O pins, an external oscillator interface, and a windowed CERQUAD package that allows UV erasure of EPROM for code development and prototyping. The device operates from 5V and is pin-compatible with the lower-memory PIC17C762 and PIC17C756A variants in the same package. Architecturally, the PIC17C766 uses a 16-bit wide instruction word and a 16-level hardware stack, supporting 58 single-word instructions with single-cycle execution (121 ns @ 33MHz), except for program branches and table reads/writes which are two cycles. The MCU includes three 8-bit I/O ports (PORTA, PORTB, PORTC) plus additional port pins enabled by the 84-pin package, with built-in peripherals for serial communication. Typical applications include industrial automation controllers, HVAC system controllers, automotive body electronics, security and access control systems, point-of-sale terminals, and any legacy design requiring a high-I/O-count OTP/EPROM microcontroller in a windowed ceramic package for in-circuit emulation or field re-programmability. The /CL suffix denotes the CERQUAD J-lead windowed package for prototype development; production builds use the plastic /L or /PT variants. When designing with this part, note that the EPROM window is required for UV erasure, so the CERQUAD package is not suitable for high-vibration or cost-sensitive production. Microchip recommends migrating to the PIC18F8520, a flash-based successor with code compatibility, modern peripherals, and a smaller footprint. Ensure your programmer supports the PIC17C family and the 84-CERQUAD package; older EPROM programmers with UV erasers are required for development cycles. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC17C766T-16/PT - 8-Bit 16MHz OTP MCU, 32KB, 80-TQFP | Microchip
PIC17C766T-16/PT

PIC17C766T-16/PT - 8-Bit 16MHz OTP MCU, 32KB, 80-TQFP | Microchip

The Microchip Technology PIC17C766T-16/PT is an 8-bit RISC CMOS OTP microcontroller in the PIC17C family, delivered in an 80-pin TQFP (PT) package, with a 16 MHz maximum clock input and 32 KB (16K x 16) of One-Time-Programmable program memory. It delivers up to 8.25 MIPS performance with a 121 ns single-cycle instruction execution, integrates a single-cycle hardware multiplier, and provides 902 bytes of general-purpose RAM. The 'T' suffix indicates tape-and-reel packaging, while the '-16' speed grade specifies the 16 MHz clock input variant, and the 'PT' package code designates the 12x12 mm 80-pin TQFP. A PIC17C series microcontroller is part of Microchip's high-performance 8-bit CMOS EPROM/OTP MCU family, positioned between the PIC16C mid-range and PIC18 enhanced architectures in the taxonomy: PIC17C -> PIC16C/PIC17C/PIC18 family -> 8-bit microcontroller -> MCU -> semiconductor. The PIC17C line is upwards compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX instruction sets, giving designers an easy migration path while gaining additional timers, capture/PWM peripherals, and 16 channels of 10-bit ADC. Key features include 66 general-purpose I/O pins, 50 programmable I/O ports, integrated peripherals (I2C, SPI, and UART/USART), 4 capture inputs, 3 PWM outputs, external memory addressing, and 16 channels of 10-bit A/D converter. The device supports a 4.5 V to 5.5 V supply range, offers a commercial operating temperature grade, and is housed in a plastic TQFP-80 surface-mount package with gull-wing leads, providing a compact 12x12 mm footprint for high-pin-count embedded designs. The PIC17C766T-16/PT architecture is built on a RISC core with only 58 single-word instructions, simplifying code development while still delivering high throughput via 121 ns instruction cycles (except 2-cycle branches and table reads/writes). The CMOS EPROM/OTP process technology combines high performance with low power consumption, and the integrated hardware multiplier accelerates arithmetic operations. Typical applications include industrial control systems, motor control, automotive body and chassis electronics, embedded instrumentation, sensor interfaces, and consumer electronics requiring high I/O count and ADC channels. The 16 MHz operating speed and rich peripheral set also suit HVAC controllers, security systems, and power-conversion front-end controllers. When designing with this device, ensure the chosen development tools (MPLAB XC8, PICSTART Plus, PRO MATE II, or MPLAB PM3 programmers) match the OTP device programming model. Because the memory is OTP, code revisions require a new device. Verify decoupling, oscillator stability, and MCLR reset hardware as described in the Microchip PIC17C766 datasheet. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and practical design notes - going beyond what is available in the manufacturer datasheet or a typical distributor listing to give engineers a single, citation-ready reference for the PIC17C766T-16/PT.

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PIC17C766T-16E/PT - 8-Bit OTP MCU, 32KB, 66 I/O, 80-TQFP | Microchip
PIC17C766T-16E/PT

PIC17C766T-16E/PT - 8-Bit OTP MCU, 32KB, 66 I/O, 80-TQFP | Microchip

The Microchip Technology PIC17C766T-16E/PT is an 8-bit high-performance OTP (One-Time Programmable) microcontroller from the PIC® 17C family, offering 32KB (16K x 16) of program memory and 902 bytes of RAM in an 80-pin TQFP (12x12 mm) package. It executes instructions at a 16 MHz clock rate, achieving single-cycle execution in 121 ns (except for program branches and table reads/writes, which are two-cycle), and is built around Microchip's enhanced RISC architecture with only 58 single-word instructions to learn. An OTP-based microcontroller is a non-volatile program-memory device that can be programmed once after manufacture using a device programmer, and retains its code indefinitely without a battery. The OTP variant sits in the broader hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> RISC MCU -> programmable logic device -> semiconductor. The PIC17C family specifically targets applications requiring higher performance and more I/O than the PIC16 mid-range family, while keeping the familiar PIC instruction set. Key features of the PIC17C766T-16E/PT include 66 digital I/O lines distributed across multiple ports, an internal 8 MHz oscillator reference, an external oscillator input for higher-frequency operation up to 16 MHz, a 16-bit data bus architecture, and a 4.5V to 5.5V single-supply operating range. It also integrates multiple timers, a USART, and interrupt capability typical of the PIC17C series. Typical applications for the PIC17C766T-16E/PT include industrial control systems, instrumentation, motor control, and any embedded design needing a high-pin-count 8-bit MCU with deterministic single-cycle instruction execution. Engineers often select this part when migrating from PIC16 designs that have outgrown their I/O count. A key design consideration is that the 'E' suffix denotes the industrial operating temperature range (-40°C to +125°C) and the 'T' suffix indicates tape-and-reel packaging. Because this is an OTP device, firmware revisions require a new part; consider the Flash-based PIC18F or dsPIC families for in-field reprogrammability. This page synthesizes distributor pricing, package-level alternatives, and practical design considerations not typically found in the manufacturer datasheet. Pricing reflects real-time distributor data as of 2026-09-26.

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PIC17C766T-16I/PT - 8-Bit OTP MCU 32KB EPROM TQFP-80 | Microchip
PIC17C766T-16I/PT

PIC17C766T-16I/PT - 8-Bit OTP MCU 32KB EPROM TQFP-80 | Microchip

The Microchip Technology PIC17C766T-16I/PT is a high-performance 8-bit CMOS EPROM microcontroller with 32KB of on-chip program memory, 902 bytes of RAM, and a 10-bit analog-to-digital converter, delivered in an 80-pin TQFP (PT) package supplied on tape and reel. The -16 speed grade specifies a 16 MHz maximum clock input with a 121 ns instruction cycle, executing all instructions in a single cycle except program branches and table reads/writes which take two cycles. The device operates from a 4.5V to 5.5V single supply and provides 66 general-purpose digital I/O lines plus dedicated peripheral interfaces. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripherals on one die; OTP EPROM-based MCUs ship with one-time-programmable memory that can be erased only with a UV windowed package, making them ideal for low-volume production or pre-programmed module deployment. The PIC17 family sits above baseline PIC16 devices in Microchip's hierarchy, adding a wider 16-bit instruction path, hardware multiplier, and a Harvard architecture that separates program and data buses for deterministic execution. This combination delivers approximately 8 MIPS sustained throughput while retaining the low power and small footprint characteristic of PIC mid-range devices. Key features of the PIC17C766 include a hardware 8x8 single-cycle multiplier, 10-bit 12-channel successive-approximation ADC, two 8-bit timers plus one 16-bit timer/counter, universal synchronous/asynchronous receiver-transmitter (USART), and a capture/compare/PWM module. The integrated watchdog timer with on-chip RC oscillator and power-on reset circuit reduce external component count. The -16I industrial temperature grade spans -40°C to +85°C, making the part suitable for harsh embedded environments and outdoor industrial installations. Architecturally, the PIC17C766 employs an enhanced Harvard core with a two-stage instruction pipeline and dedicated hardware stack for fast interrupt response. The EPROM program memory is windowed for prototype erasure, while the production-grade -16I/PT variant is intended for one-time programming. The instruction set comprises only 58 single-word instructions, simplifying code generation and reducing firmware development time compared with multi-byte CISC architectures. Typical applications include industrial control systems, motor control front-ends, sensor signal conditioning, smart instrumentation, and embedded data acquisition modules. The 10-bit ADC and 50+ I/O lines make the device well suited to multi-channel analog monitoring boards used in factory automation. When designing with this MCU, allocate adequate decoupling (100 nF ceramic plus 10 µF bulk) on VDD and AVSS pins, place the crystal within 1 cm of the OSC pins, and verify that the brown-out reset voltage is configured below the minimum operating rail. The part is now in mature production; engineers should confirm last-time-buy status directly with Microchip before committing new designs. This page consolidates distributor pricing as of 2026-09-26, parameter-by-parameter drop-in alternatives, and practical PCB layout notes not found in the manufacturer datasheet alone.

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PIC17C766T-33/PT - 33MHz 8-bit OTP MCU 32KB 66 I/O | Microchip
PIC17C766T-33/PT

PIC17C766T-33/PT - 33MHz 8-bit OTP MCU 32KB 66 I/O | Microchip

The Microchip Technology PIC17C766T-33/PT is a high-performance 8-bit CMOS EPROM (OTP) microcontroller featuring a 33 MHz clock input, 121 ns instruction cycle, 32 KB (16K x 16) of OTP program memory, 902 bytes of RAM, and 66 I/O pins, packaged in an 80-pin TQFP (12x12 mm) form factor. The PIC17C family architecture delivers 8.25 MIPS throughput and integrates a hardware 8x8 single-cycle multiplier, 10-bit A/D conversion peripheral, and a RISC instruction set of 58 single-word instructions, of which most execute in a single 121 ns cycle. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (ROM/Flash/OTP), working RAM, and peripheral interfaces such as timers, communication ports, and ADCs. The PIC17C766T sits in Microchip's PIC17C high-end 8-bit tier (hypernym chain: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC), historically aimed at applications demanding more code space, I/O, and analog integration than the mid-range PIC16C family could supply. It is upwards-compatible with PIC16C5X, PIC12CXXX, and PIC16CXX devices, easing code migration. Key features include a 33 MHz oscillator, 121 ns minimum instruction cycle (except program branches and table reads/writes which take two cycles), 10-bit A/D converter, 50+ I/O ports (per datasheet variant), and a wide 4.5 V to 5.5 V supply range. The OTP program memory allows one-time programming for production builds, while the on-chip 902-byte RAM supports substantial data buffering and stack depth. The 80-pin TQFP (PT) package provides ample I/O access for matrix keypads, LCD drivers, and multi-channel sensor acquisition systems. The PIC17C766T-33/PT uses a Harvard RISC architecture with separate program and data buses (16-bit program bus, 8-bit data bus), enabling simultaneous instruction fetch and operand access. Its single-cycle hardware multiplier accelerates arithmetic-heavy control loops, and the integrated 10-bit ADC eliminates the need for external analog conversion in many sensing designs. Per Microchip's product advisory, a newer device (PIC18F8520) supersedes this part for new designs, but PIC17C766T remains in active production for long-life and legacy sustainment programs. Typical applications include industrial automation controllers, building HVAC and access-control panels, instrumentation front-ends with ADC, motor-control front ends, and embedded control boards in medical and test equipment. The 66 I/O and 10-bit ADC make it well-suited to multi-channel sensor acquisition and discrete control tasks. In automotive subsystems (non-safety), the device can also serve as a body controller, although PIC18 alternatives are now recommended for new platforms. When designing with this part, ensure the OTP programming step is accounted for in manufacturing flow (windowed JW variants are needed for prototype code iteration). The 33 MHz / 5 V operation implies 1.2 W maximum core dissipation; thermal relief on the TQFP pad is advisable. Migrating to PIC18F8520 (or PIC18F8720) is recommended for new designs where Flash reprogrammability is desired, since PIC17C766T is OTP-only and cannot be field-updated.

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PIC17C766T-33E/PT - 8-bit 33MHz PIC MCU 32KB OTP 80-TQFP | Microchip
PIC17C766T-33E/PT

PIC17C766T-33E/PT - 8-bit 33MHz PIC MCU 32KB OTP 80-TQFP | Microchip

The Microchip Technology PIC17C766T-33E/PT is an 8-bit PIC17C-series RISC microcontroller with a 33 MHz core clock and 32 KB (16K x 16) of One-Time-Programmable (OTP) program memory, packaged in an 80-pin TQFP (12x12 mm). The device delivers up to 8.25 MIPS (121 ns single-cycle instruction execution) from its CMOS PIC core, supported by 902 bytes of general-purpose RAM and 50 to 66 digital I/O pins depending on peripheral remapping, and integrates Brown-out Detect/Reset, Power-On Reset, PWM, and a Watchdog Timer as on-chip peripherals. The 'E' suffix denotes the Extended industrial operating temperature grade of -40C to +125C, while the 'T' suffix indicates Tape & Reel packaging for surface-mount assembly. An 8-bit PIC microcontroller (MCU) is a Harvard-architecture CMOS processor that uses a separate program and data bus to fetch instructions and operands in parallel, enabling deterministic single-cycle instruction execution. PIC MCUs occupy the lowest tier of the embedded controller hierarchy: microcontroller -> embedded controller -> RISC processor -> semiconductor. The PIC17C family specifically sits above the PIC16 and below the PIC18 in code density and peripheral integration, targeting applications that need more I/O and PWM channels than PIC16 parts can offer while remaining easy to program. Key features include the PIC17C-series' 16-bit instruction word for compact code, 33 MHz maximum operating frequency (the '33' designator), 4.5 V to 5.5 V single-supply operation, hardware multiply, 8-level deep hardware stack, and up to 16 sources of interrupt. The 80-pin TQFP package exposes 50 to 66 I/O lines plus dedicated oscillator, reset, and power pins, giving designers enough headroom for human-interface or motor-control front-ends. Typical applications include industrial control panels, motor-control front-ends (washing machines, small appliances, HVAC blowers), automotive body and chassis subsystems (pre-CAN era), instrument clusters, and white-goods user-interface boards. The Extended temperature grade also supports outdoor industrial installations. The Microchip product page notes that Microchip recommends PIC18F8520 as the recommended migration path for new designs, since the PIC17C766 family is no longer recommended for new designs. When designing with this part, budget for an external oscillator or crystal across OSC1/OSC2, observe the 4.5 V brown-out threshold during power-supply ramp design, and allocate sufficient decoupling (one 100 nF per VDD/VSS pair) near the package. Designers should plan for OTP programming time and required programming voltage sequencing during production. This page consolidates distributor pricing, current lifecycle status, and a practical drop-in alternatives matrix not found in the manufacturer datasheet alone.

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PIC17C766T-33I/L - 33MHz 8-bit MCU, 32KB OTP, 84-PLCC | Microchip
PIC17C766T-33I/L

PIC17C766T-33I/L - 33MHz 8-bit MCU, 32KB OTP, 84-PLCC | Microchip

The Microchip Technology PIC17C766T-33I/L is a high-performance 8-bit CMOS EPROM microcontroller built on Microchip's PIC® 17C RISC architecture, delivering 8.25 MIPS at a 33 MHz external clock with a 121 ns single-cycle instruction execution. The device integrates 32 KB of One-Time Programmable (OTP) program memory organized as 16K x 16 words, 902 bytes of general-purpose RAM, and up to 66 general-purpose I/O pins, all housed in an 84-pin PLCC (J-Lead) package measuring 29.31 x 29.31 mm. The 'T' suffix denotes tape-and-reel packaging for high-volume assembly, while the 'I' industrial temperature grade guarantees operation from -40 °C to +85 °C. What is a PIC® 17C microcontroller? The PIC17C family sits at the top of Microchip's legacy 8-bit OTP/EPROM-based portfolio, positioned between the PIC16 mid-range and PIC18 enhanced families. As an OTP microcontroller it is programmed once at production and cannot be electrically erased, which makes it suitable for cost-optimized, high-volume embedded control where firmware is fixed for the product lifetime. The PIC17C766 series is now superseded by flash-based dsPIC® and PIC18 successors, but it remains in service in long-life industrial, automotive aftermarket, and consumer designs. Key features of this part include the 8.25 MIPS throughput, a 16-bit-wide instruction word for compact code, a hardware multiplier, a 10-bit analog-to-digital converter, multiple timer modules, a USART, and an external memory interface supporting up to 64 KB of external program/data memory. The Harvard bus architecture separates program and data paths to allow simultaneous fetch and execute, and the 84-pin PLCC footprint provides ample I/O for parallel bus applications, keypad scanning, and multi-channel sensor conditioning. The PIC17C766 is targeted at applications requiring robust real-time control with deterministic single-cycle execution: industrial automation controllers, HVAC and appliance control, automotive body and instrument clusters, point-of-sale terminals, and instrumentation front-ends. The 10-bit ADC and 66 I/O pins make it a fit for multi-signal data-acquisition front-ends, while the wide operating voltage range supports both 5 V regulated rails and lightly-conditioned battery inputs. Designers should note that OTP memory cannot be field-updated; firmware revisions require a different part number or migration to a flash-based PIC18F/dsPIC33E equivalent. The 84-PLCC package is socket-friendly, easing prototyping and field service. Ensure in-circuit programming compatibility with the chosen programmer (e.g., PICSTART Plus or MPLAB PM3) before committing to the layout. This page synthesizes distributor pricing, lead-time signals, same-package alternatives, and practical design notes not collated on any single manufacturer or distributor page.

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PIC17C766T-33I/PT - 33MHz 8-Bit OTP MCU, 32KB EPROM | Microchip
PIC17C766T-33I/PT

PIC17C766T-33I/PT - 33MHz 8-Bit OTP MCU, 32KB EPROM | Microchip

The Microchip PIC17C766T-33I/PT is a high-performance 8-bit CMOS EPROM microcontroller built on the legacy PIC17C architecture, delivering 33 MHz clock input, 121 ns single-cycle instruction execution (8.25 MIPS), and 32 KB (16K x 16) of OTP program memory in an 80-pin TQFP (12x12) package. It integrates 902 bytes of data RAM, a 10-bit A/D converter with 16 analog input channels, and a full suite of communication peripherals including I2C, SPI, and UART/USART. The part operates from a 4.5 V to 5.5 V supply across the industrial -40C to +85C temperature range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and configurable peripherals around a bus. PIC17C devices sit at the upper end of Microchip's 8-bit PIC family, targeting applications that need more I/O, more memory, and an external memory interface than the mainstream PIC16F/PIC18F lines offer while preserving the famously compact PIC instruction set. They are positioned as 8-bit general-purpose microcontrollers within the semiconductor hierarchy: microcontroller -> embedded controller -> integrated circuit. Key features include 50 digital I/O lines, a single-cycle hardware multiplier, an 8-level deep hardware stack, four timer/counter modules, and dual capture/compare/PWM modules. The wide 16-bit instruction word improves code density for C compilers, while the 33 MHz oscillator and four-phase clock yield deterministic interrupt latency. Industrial-grade plastic packaging and a JTAG/ICSP in-circuit programming interface round out the feature set. Architecturally, the PIC17C766 uses a Harvard design with separated program (EPROM) and data (RAM) buses, enabling simultaneous instruction fetch and operand access. The OTP EPROM cell is windowless in production parts, making each device one-time programmable; the 'T' suffix indicates Tape & Reel packaging. Compared with later flash-based PIC18F devices, the PIC17C766 is non-rewriteable but offers higher deterministic real-time performance for legacy designs. Typical applications include industrial automation controllers, building HVAC and access systems, point-of-sale terminals, motor-control front-ends, and embedded legacy products where PIC17C firmware already exists. The wide I/O count and built-in 10-bit ADC suit sensor aggregation boards, and the deterministic instruction cycle is useful for bit-banging protocols on legacy busses. When designing with this part, plan for a 5V-only supply and use a CMOS-compatible 33 MHz clock source. Because the OTP memory cannot be rewritten, reserve the verification phase for a windowed PIC17C766JW engineering sample and lock the production firmware image before committing to the plastic TQFP. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet.

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PIC17LC42A-08/L - 8MHz, 4KB EPROM 8-bit MCU | Microchip
PIC17LC42A-08/L

PIC17LC42A-08/L - 8MHz, 4KB EPROM 8-bit MCU | Microchip

The Microchip Technology PIC17LC42A-08/L is a high-performance 8-bit CMOS RISC microcontroller from the PIC17C4X family, featuring 4KB (2K x 16) of EPROM program memory, 232 x 8 bytes of data RAM, and 33 general-purpose digital I/O lines. The device operates from an external oscillator at a maximum clock frequency of 8 MHz, delivering an instruction cycle of 121 ns (8 MHz), with most instructions completing in a single cycle and program branches/table reads taking two cycles. The PIC17LC42A is offered in a 40-pin DIP (0.600 inch / 15.24 mm) through-hole package, denoted by the '/L' designator, and ships in tube packaging. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and peripherals onto one silicon die. The PIC17 family is one of Microchip's highest-performance 8-bit architectures, positioned as a stepping stone between baseline PIC16 devices and the newer PIC18/dsPIC families. It uses a RISC instruction set with only 58 single-word instructions to learn, a Harvard memory architecture, and a 16-bit instruction word width that yields higher code density than typical 8-bit MCUs. Key features of the PIC17LC42A-08/L include four timers, two PWM modules, a watchdog timer for code-execution safety, a power-on reset (POR) circuit, and a USART for serial connectivity. The 'LC' suffix denotes the low-voltage CMOS variant supporting operation down to approximately 2.5 V, whereas the standard 'C' family operates at 4.5 V to 5.5 V. The device supports a 16-bit address bus width, allowing access to the full 64KB program memory map. Peripherals map onto a separate 16-bit data memory bus with 232 bytes of general-purpose RAM plus dedicated SFRs. Typical applications for this MCU include industrial automation controllers, motor drive sequencers, HVAC control boards, and legacy embedded systems that were designed around the PIC17 architecture in the late 1990s. Its EPROM program memory allows in-circuit reprogramming via a UV-erasable windowed package, simplifying development cycles and small-batch production runs. When designing with the PIC17LC42A-08/L, ensure your programmer supports the PIC17C4X device family. Decoupling capacitors (100 nF ceramic + 10 uF bulk) must be placed within 5 mm of VDD/VSS pins. Because this part is mature and primarily available through distributor stock, lead times may extend beyond those of newer PIC families; consider a PIC18F or dsPIC33 drop-in only after a full peripheral-mapping review.

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PIC17LC42A-08/P - 8MHz 4KB OTP 8-bit MCU | Microchip | 40-DIP
PIC17LC42A-08/P

PIC17LC42A-08/P - 8MHz 4KB OTP 8-bit MCU | Microchip | 40-DIP

The Microchip Technology PIC17LC42A-08/P is an 8-bit high-performance CMOS EPROM/ROM microcontroller from the PIC17 family, offered in a 40-pin PDIP (DIP) through-hole package. It integrates 4KB (2K x 16) of OTP program memory, 232 x 8 bytes of RAM, and 33 digital I/O pins, with an external oscillator interface supporting a maximum 33 MHz clock input that yields a 121 ns single-cycle instruction execution time. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and programmable I/O peripherals. The PIC17C/LC family is the high-end 8-bit tier of Microchip's PIC architecture, positioned between the PIC16 mid-range family and the original PIC18 family, with an enhanced 16-bit instruction word that allows single-cycle execution on most opcodes. The 'LC' suffix indicates the low-power CMOS variant; the 'A' marks the silicon revision described in the PIC17C4X datasheet (DS30412C). All PIC17 devices share an orthogonal instruction set of 58 single-word instructions to learn, making firmware portable across the family. Key features of the PIC17LC42A-08/P include 33 programmable digital I/O lines arranged across multiple ports, an 8-bit data path with a 16-bit-wide program word, support for external oscillator operation, and the through-hole 40-pin PDIP footprint that simplifies prototyping and breadboard use. The device operates from a 5V supply, with the 'LC' sub-family specifically targeting low-power applications. The instruction cycle of 121 ns at 33 MHz makes it well suited to real-time control loops where deterministic single-cycle execution is required. Typical applications include industrial control logic, motor drive sequencing, instrumentation front-ends, and legacy embedded systems where the PIC17 instruction set is already established in firmware. The 4KB OTP program memory and 232 bytes of RAM are sufficient for moderate-complexity control tasks, while the 33 I/O pins permit direct interfacing to keypads, displays, and analog signal conditioning circuitry without external glue logic. When designing with this part, designers should note that PIC17C/LC devices require Microchip's legacy development tools (MPLAB IDE v5.x or earlier, or MPLAB X with legacy compiler support). The 40-pin PDIP package consumes significant board space versus modern QFP alternatives; consider migrating to PIC18F or dsPIC33 families only if firmware portability and supply continuity permit. Verify OTP programming window timing against your programmer's spec - some legacy PIC17 parts have short programming windows that require batch programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing engineering context beyond what the DS30412C data sheet offers.

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PIC17LC42A-08/PQ - 8-bit CMOS MCU, 4KB OTP, 33 I/O | Microchip
PIC17LC42A-08/PQ

PIC17LC42A-08/PQ - 8-bit CMOS MCU, 4KB OTP, 33 I/O | Microchip

The Microchip Technology PIC17LC42A-08/PQ is a high-performance 8-bit CMOS EPROM/ROM microcontroller housed in a 44-pin MQFP (PQ) package, designed for embedded applications requiring deterministic single-cycle execution and moderate memory resources. The device integrates 4 KB of one-time-programmable (OTP) program memory, 232 bytes of RAM, and 33 digital I/O lines, and executes from a 33 MHz input clock producing a 121 ns instruction cycle (except for two-cycle program branches and table reads/writes). An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. The PIC17C/PIC17LC family sits at the upper end of Microchip's 8-bit line, sharing the RISC instruction-set philosophy of the smaller PIC16 family but with a wider 16-bit instruction word, a 16-bit data path, and hardware multiply support. The "LC" suffix indicates a low-voltage CMOS variant suitable for battery-powered or 3.3 V designs. Within the broader taxonomy, the PIC17LC42A is a microcontroller -> 8-bit MCU -> RISC MCU -> EPROM/OTP MCU -> power-aware (LC) family member. Key features of the PIC17LC42A-08/PQ include 4 KB OTP program memory, 232 bytes of data RAM, 33 general-purpose I/O pins, an 8-bit timer/counter, a USART, and the PIC17-series 16-bit instruction architecture with only 58 single-word instructions to learn. The "/PQ" suffix designates a 44-pin Metric Quad Flat Pack (MQFP) with gull-wing leads and a square footprint. The "-08" speed grade indicates an 8 MHz oscillator rating within the LC low-voltage family. Architecturally, the device uses a Harvard memory layout (separate program and data buses), enabling simultaneous instruction fetch and operand access. The single-cycle instruction pipeline (two-cycle for branches and table operations) simplifies deterministic real-time control loops. The 8-bit ALU, combined with the 16-bit instruction word, supports bit-oriented, byte-oriented, and literal operations natively. Typical applications include industrial control panels, instrumentation front-ends, motor-control signal conditioning, low-cost remote sensor terminals, and legacy embedded-system upgrades where PIC16-series parts lack sufficient I/O or memory. The wide I/O count and OTP memory make it well suited for moderate-volume production. When designing with this part, note that OTP memory allows only a single programming cycle, so code must be verified before final programming. Designers should budget decoupling on VDD/VSS pins, follow Microchip's MQFP PCB layout recommendations for leaded gull-wing packages, and ensure oscillator rise/fall times meet the 33 MHz spec. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC17LC42A-08/PT - 8-bit 8MHz 4KB OTP MCU 44-TQFP | Microchip
PIC17LC42A-08/PT

PIC17LC42A-08/PT - 8-bit 8MHz 4KB OTP MCU 44-TQFP | Microchip

The Microchip Technology PIC17LC42A-08/PT is a high-performance 8-bit CMOS RISC microcontroller belonging to the PIC17C family, featuring 4KB (2K x 16) of One-Time Programmable (OTP) program memory, 232 x 8 bytes of RAM, 33 digital I/O lines, and an 8MHz maximum operating clock in a 44-pin TQFP (10x10 mm) surface-mount package. Operating from a 3.0V to 5.5V supply, the device executes 58 single-word instructions, with all instructions completing in a single 121 ns cycle except program branches and table reads/writes which are two cycles, delivering up to 33 MIPS throughput at 33 MHz clock input. The PIC17C42A die incorporates a multiply instruction, hardware multiply/divide assist, a 17-bit instruction word with separate 16-bit data path, and a dedicated USART for serial communication. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and configurable peripheral I/O on one silicon die. The PIC architecture pioneered Harvard memory organization with separate code and data buses, enabling simultaneous instruction fetch and data access. The PIC17 family sits above the PIC16 and below the PIC18 in the Microchip 8-bit hierarchy, adding a wider 16-bit instruction word and multiply support for higher code density and arithmetic throughput. Key features of the PIC17LC42A-08/PT include a 4KB OTP program memory, 232 bytes of general-purpose RAM, 33 I/O pins, an external oscillator interface, brown-out reset, a watchdog timer with on-chip RC oscillator, and a power-saving SLEEP mode. The 8MHz clock speed (suffix -08) corresponds to a 121 ns instruction cycle. On-chip peripherals include a USART, a 16-bit timer/counter, capture/compare/PWM modules, and an 8-bit A/D converter. Typical applications include industrial control, motor control, automotive subsystems, security and alarm panels, and embedded control requiring deterministic single-cycle execution. The wide 5V supply tolerance and external oscillator support make it well suited to noisy industrial environments. When designing with this MCU, allocate sufficient decoupling (100 nF ceramic on each VDD pair) and follow Microchip's recommended in-circuit serial programming (ICSP) layout for production programming.

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PIC17LC42A-08I/P - 8-bit 33MHz 4KB OTP MCU, 33 I/O DIP-40
PIC17LC42A-08I/P

PIC17LC42A-08I/P - 8-bit 33MHz 4KB OTP MCU, 33 I/O DIP-40

The Microchip Technology PIC17LC42A-08I/P is an 8-bit high-performance RISC microcontroller belonging to the PIC17C family, featuring 4KB (2K x 16) of One-Time-Programmable (OTP) EPROM program memory, 232 bytes of RAM, and 33 digital I/O pins, housed in a 40-pin PDIP (0.600 inch / 15.24 mm) through-hole package. It operates at up to 33 MHz oscillator input with a 121 ns instruction cycle and supports low-voltage operation suited to battery and portable designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash), data RAM, and peripherals on one die. The PIC17C family is Microchip's original high-performance 8-bit tier above the baseline PIC16C line, introducing a wider 16-bit instruction word, a hardware multiply, and an expanded peripheral set. In the taxonomy of electronic components, the PIC17LC42A sits within microcontrollers -> 8-bit microcontrollers -> PIC microcontrollers -> PIC17C family -> OTP EPROM-based MCUs. Key features include 58 single-word instructions, single-cycle execution for most instructions (with two-cycle program branches and table reads/writes), an external oscillator interface, an industrial temperature grade (-40C to +85C), and an instruction set optimized for C-language efficiency. The wide 16-bit instruction word enables a single-cycle hardware multiply and a richer addressing mode set compared to PIC16C baseline parts, allowing higher code density and faster arithmetic. The PIC17LC42A uses a Harvard architecture with separate program and data buses, OTP EPROM program memory, and an external oscillator input. With a 33 MHz clock and 121 ns instruction cycle, it delivers roughly 8 MIPS throughput, and the 33 I/O lines share four 8-bit ports plus a control port for interrupt, timer, and peripheral functions. The architecture supports 16-bit instructions for code efficiency and offers a richer peripheral set than the PIC16C family. Typical applications include industrial control systems, motor control front-ends, automotive body electronics (legacy), instrumentation, and embedded control subsystems where through-hole PCB construction and a long-lifecycle 8-bit MCU simplify manufacturing. The wide operating voltage and OTP EPROM also make it attractive for prototyping and short-to-medium production runs. When designing with this device, plan for an external oscillator and verify that the OTP windowless package is appropriate (JW package required for prototype erasing). The through-hole DIP-40 footprint simplifies hand prototyping but consumes significant board area; consider PIC17C42A variants in surface-mount packages for volume production. This page synthesizes Microchip PIC17C42A datasheet specifications, DigiKey/Mouser distributor pricing, drop-in same-package alternatives from the PIC17C42A family, and practical design notes that complement the manufacturer datasheet.

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PIC17LC42A-08I/PT - 8-Bit 8MHz 4KB OTP MCU 44-TQFP | Microchip
PIC17LC42A-08I/PT

PIC17LC42A-08I/PT - 8-Bit 8MHz 4KB OTP MCU 44-TQFP | Microchip

The Microchip Technology PIC17LC42A-08I/PT is a high-performance 8-bit CMOS RISC microcontroller from the PIC17C family, featuring 4KB (2K x 16) of One-Time Programmable (OTP) program memory, an 8MHz maximum clock input, 232 x 8 bytes of RAM, and 33 digital I/O pins, housed in a 44-pin TQFP (10x10 mm) surface-mount package. It executes 58 single-word instructions in a single instruction cycle of 121 ns (except program branches and table reads/writes which take two cycles), delivering strong integer throughput for an 8-bit MCU of its era. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral I/O on one die. The PIC17 family sits at the top of Microchip's 8-bit portfolio and targets high-end 8-bit embedded applications. Within the wider taxonomy, PIC17LC42A belongs to: microcontroller -> embedded processor -> semiconductor IC. Its "LC" low-voltage CMOS process allows operation down to 2.5V, distinguishing it from the original PIC17C42A which required 5V. Key features include an 8-level deep hardware stack, 16-bit instruction word architecture, 33 I/O lines, integrated UART/USART, and an external oscillator interface. The wide operating voltage range (2.5V-6.0V) and industrial temperature grade (-40C to +85C, indicated by the "I" suffix) make the device suited for battery-powered and industrial environments. Architecturally, the PIC17LC42A uses a Harvard-style RISC core with separate program and data buses, enabling instruction fetch and operand access to occur in parallel within a single cycle. Its 16-bit-wide program memory (despite being called an "8-bit" MCU) and dual-cycle hardware multiply support arithmetic-intensive routines. Typical applications include industrial control logic, instrumentation front-ends, automotive body modules, motor control signal conditioning, and embedded communication bridges where UART/USART connectivity and OTP code security are required. Engineers often choose the PIC17LC42A for legacy designs and for new designs that benefit from mature tooling and an extensive code base. When designing with this part, plan for a 121 ns instruction cycle budget and ensure the chosen external oscillator source meets the device's timing specifications. The OTP memory means firmware must be complete before programming - consider that field updates are not possible without physical device replacement. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC17LC42AT-08/L - 8-Bit 4KB OTP MCU, 8MHz, 44-PLCC | Microchip
PIC17LC42AT-08/L

PIC17LC42AT-08/L - 8-Bit 4KB OTP MCU, 8MHz, 44-PLCC | Microchip

The Microchip PIC17LC42AT-08/L is an 8-bit RISC microcontroller from the PIC17 family, featuring 4KB (2K x 16) of One-Time Programmable (OTP) program memory, 232 bytes of RAM, and 33 digital I/O lines, housed in a 44-pin PLCC (J-Lead) package supplied on tape and reel. It operates at up to 8MHz clock speed with a 121 ns single-cycle instruction execution time, supports a 5V supply, and is rated for the commercial temperature range. An 8-bit PIC microcontroller is a Harvard-architecture processor that executes one instruction per internal clock cycle (except branches and table reads/writes, which take two cycles). The PIC17 family was Microchip's first high-performance 8-bit line, sitting above the baseline PIC16 family in the taxonomy 8-bit MCU -> PIC microcontroller -> microcontroller -> embedded processor -> semiconductor. The 'LC' suffix denotes a low-power CMOS variant and the 'A' revision improves instruction timing and peripheral features over the original PIC17C42. Key features include a RISC core with only 58 single-word instructions, hardware multiply, a 16-level hardware stack, eight 8-bit I/O ports, two 8-bit timer/counters, one 16-bit timer/counter, an analog comparator, a watchdog timer, and an external interrupt. The 44-pin PLCC (J-Lead) package provides through-hole-friendly surface mounting and excellent mechanical robustness for industrial environments. The architecture uses an 8-bit data path with a 16-bit instruction word, allowing most instructions to complete in a single instruction cycle (121 ns at 8MHz). The Harvard bus separates program and data memory, eliminating Von Neumann bottlenecks. The OTP program memory enables low-cost prototyping that can move to masked-ROM production at scale. Typical applications include industrial control systems, automotive subsystems, motor control front-ends, and consumer electronics. The wide commercial temperature range and PLCC package make it well-suited for factory-floor equipment and appliance controls. The external oscillator interface accepts crystals or clock sources from DC to 8 MHz, simplifying system clocking. When designing with this device, note that the OTP memory cannot be reprogrammed - choose PIC17LC44 or PIC16 parts with Flash memory if in-field firmware updates are required. Use a 1k pull-up on the MCLR reset line and decouple VDD/VSS with 100 nF ceramic capacitors close to the package pins. This page synthesizes distributor stock levels, package information, drop-in alternative guidance, and practical design notes for the PIC17LC42AT-08/L that are not found in a single datasheet location.

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PIC17LC42AT-08/PQ - 8MHz 8-Bit MCU, 4KB OTP, 33 I/O | Microchip
PIC17LC42AT-08/PQ

PIC17LC42AT-08/PQ - 8MHz 8-Bit MCU, 4KB OTP, 33 I/O | Microchip

The Microchip Technology PIC17LC42AT-08/PQ is an 8-bit RISC microcontroller from the PIC17C family, featuring 4KB of One-Time Programmable (OTP) program memory and 232 bytes of RAM. It operates at a clock speed of 8 MHz (with an instruction cycle of 121 ns), supports 33 digital I/O lines, and is housed in a 44-pin MQFP (PQ) package. The device is built around an enhanced 16-bit-wide data bus architecture and offers 58 single-word instructions, with all instructions executing in a single cycle except for program branches and table reads/writes which take two cycles. What is a PIC17 microcontroller? The PIC17 family is an enhanced 8-bit RISC microcontroller family within Microchip's broader PIC product hierarchy (PIC -> PIC16/17/18 -> 8-bit microcontroller -> microcontroller -> embedded IC). It expands on the PIC16 architecture by introducing a wider instruction word, additional peripheral integration, and a larger register file, making it suitable for higher-performance embedded applications that exceed PIC16 capabilities but do not yet require a 16-bit dsPIC or PIC24 core. Key features of the PIC17LC42AT-08/PQ include a 2.5V to 5.5V supply voltage range, an 8 MHz maximum operating frequency, 33 I/O ports with high-current sink/source capability, an internal multiplier, and a hardware USART. The 'LC' prefix designates the low-voltage CMOS variant, making the part suitable for both battery-powered and standard 5V embedded systems. The OTP memory allows one-time programming of the application code, which is ideal for production-volume embedded products where firmware is finalized. The PIC17C42A die uses Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. This dual-bus design, combined with single-cycle execution on most instructions, delivers deterministic throughput that is critical for real-time control loops. The 'A' suffix denotes a silicon revision that added peripheral refinements over the original PIC17C42. Typical applications include industrial control systems, motor control front-ends, instrumentation, automotive body electronics (non-safety-critical), and consumer appliance controllers. The wide 2.5V to 5.5V supply range enables direct operation from a 3.3V regulated rail or a 5V linear supply. When designing with this device, ensure the oscillator configuration matches the application's timing budget and that the I/O drive strength is appropriate for the load. The 44-pin MQFP package requires standard surface-mount reflow with a recommended pad footprint per IPC-7351. This page synthesizes current distributor pricing, drop-in compatible same-brand alternatives, and practical design notes that go beyond the information in the bare manufacturer datasheet, providing engineers with a single decision-grade reference.

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PIC17LC43-08/L - 8KB EPROM 8-bit MCU 33MHz 5V | Microchip 44-PLCC
PIC17LC43-08/L

PIC17LC43-08/L - 8KB EPROM 8-bit MCU 33MHz 5V | Microchip 44-PLCC

The Microchip Technology PIC17LC43-08/L is a high-performance 8-bit CMOS EPROM-based RISC microcontroller with 8 KB of on-chip program memory (OTP/EPROM), 454 bytes of RAM, and 33 digital I/O pins, housed in a 44-pin PLCC (Plastic Leaded Chip Carrier, J-Lead) package rated for the commercial temperature grade. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/EPROM), data memory (RAM), and peripheral interfaces (GPIO, timers, serial ports, ADC) into one device. The PIC17C/LC family sits at the high end of Microchip's 8-bit PIC architecture, using a 16-bit-wide instruction word and a 58-instruction RISC core optimized for high-throughput control. Within Microchip's taxonomy, this places PIC17LC43 at the tier above PIC16 (mid-range) and below the PIC18 enhanced 8-bit family, targeting applications that need more code space and I/O than PIC16 can deliver without jumping to a 16-bit dsPIC or PIC24. Key differentiating specifications of the PIC17LC43-08/L include a 33 MHz maximum clock input yielding a 121 ns single-cycle instruction execution time, a wide 2.5 V to 6.0 V supply range (the LC variant supports 3.3 V and 5 V operation), and 33 programmable I/O lines suitable for keypad-scan, LCD-drive, or sensor-multiplexing interfaces. The device features an internal EPROM program memory window, two 8-bit timers plus one 16-bit timer, a hardware USART, and a multiply instruction — uncommon on a baseline PIC16 — that makes 16-bit math single-cycle. Architecturally, the PIC17LC43-08/L uses a Harvard memory map with separate program and data buses. The "08" speed suffix denotes the 8 MHz internal clock (33 MHz crystal with the on-chip 4x PLL option), and the "L" indicates the low-voltage / wide-Vdd EPROM part. Compared with the OTP-only PIC17C43, the PIC17LC43 is the same silicon tested for lower-voltage operation, providing drop-in compatibility at 5 V. Typical applications for the PIC17LC43-08/L include industrial control front-ends (sensor aggregation, motor-driver PWM sequencing), automotive body electronics before the migration to PIC18, keypad/LCD human-machine interface modules, point-of-sale terminals, and embedded instrumentation requiring 8 KB of code and more than 24 I/O pins. Designers should plan oscillator-layout care because the 33 MHz clock harmonics sit inside common EMI bands; place the crystal within 10 mm of the OSC1/OSC2 pins and guard the traces with a ground ring. Decouple VDD with a 0.1 µF ceramic cap per supply pin plus a bulk 10 µF tantalum at the package entry. EPROM-windowed parts are one-time-programmable only — once the package is sealed, code cannot be updated, so this MPN is appropriate for mature production runs rather than field-deployed firmware updates. This page synthesizes current distributor pricing, a 44-PLCC drop-in alternatives list, lifecycle signals, and practical design notes that go beyond the brief device summary in the Microchip datasheet.

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PIC17LC43-08/PT - 8KB OTP 8-bit MCU, 33MHz, TQFP-44 | Microchip
PIC17LC43-08/PT

PIC17LC43-08/PT - 8KB OTP 8-bit MCU, 33MHz, TQFP-44 | Microchip

The Microchip Technology PIC17LC43-08/PT is a high-performance 8-bit CMOS EPROM/ROM microcontroller delivering 8.25 MIPS at a 121 ns instruction cycle from a 33 MHz clock input, housed in a 44-pin TQFP surface-mount package. It integrates 8 KB of OTP program memory, 454 bytes of RAM, and 33 digital I/O lines, runs on a 2.5 V to 5.5 V supply, and is built around Microchip's PIC17C-family RISC architecture with 58 single-word instructions. Operating speed: DC to 33 MHz, single-cycle execution except for program branches and table reads/writes which require two cycles (242 ns). The device is OTP-based, meaning program memory is one-time programmable and not erasable, making it ideal for volume production where firmware is finalized. Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, digital I/O, and on-chip peripherals such as timers, UARTs, and A/D converters. The PIC17 family sits between Microchip's baseline PIC12/PIC16 lines and the higher-end PIC18 line, offering RISC performance with a 16-bit instruction word and 8-bit data path. OTP (One-Time Programmable) microcontrollers use EPROM cells that can be electrically written once during production programming, contrasting with flash-based parts that support in-system re-programming. Key features of the PIC17LC43-08/PT include: 33 MHz maximum clock input with 121 ns instruction cycle, 8 KB OTP program memory, 454 bytes of general-purpose RAM, 33 bidirectional I/O pins, 2.5 V to 5.5 V single-supply operation, and the classic PIC17C43 peripheral set including timers, capture/compare/PWM, and serial I/O. Compared to PIC16F predecessors at the same clock, the 17C43 offers higher throughput and a wider 16-bit instruction word for more efficient code density. Typical applications include industrial control logic, motor drive signal conditioning, embedded instrumentation, automotive body electronics, and consumer appliance controllers where a TQFP surface-mount package, OTP memory, and PIC17C43 software compatibility are required. The 33 I/O lines allow direct interfacing to keypads, displays, sensors, and power-driver stages without external glue logic. When designing with this part, plan for OTP programming infrastructure or contract assembly. The TQFP-44 footprint requires careful PCB thermal relief and trace routing for fine-pitch 0.8 mm leads. Designers migrating from PIC16C/PIC16F code should review the PIC17C43 instruction-set differences (16-bit opcode, multi-cycle branches) and revise the linker/startup files accordingly.

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PIC17LC43-08I/L - 8MHz 8KB OTP 8-bit MCU 44-PLCC | Microchip
PIC17LC43-08I/L

PIC17LC43-08I/L - 8MHz 8KB OTP 8-bit MCU 44-PLCC | Microchip

The Microchip Technology PIC17LC43-08I/L is an 8-bit RISC microcontroller from the PIC17C family, delivering 8.25 MIPS performance with a 121 ns instruction cycle in a 44-pin PLCC (16.59x16.59 mm) J-lead surface-mount package. It integrates 8KB (4K x 16) of One-Time Programmable (OTP) program memory, 454 bytes of RAM, and 33 digital I/O pins, operating from a 2.5V to 5V supply at up to 8 MHz clock. The industrial-grade "-I" suffix supports an operating temperature range of -40C to +85C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash/OTP), data memory (RAM), and peripherals around an 8-bit data bus. MCUs sit at the bottom of the embedded computing hierarchy below microprocessors (MPUs) and are the workhorse of embedded electronics. Within that hierarchy, the PIC17 family is Microchip's high-performance 8-bit tier - one tier above the PIC16 mid-range and PIC12/14 baseline families - bridging classic 8-bit simplicity and 16-bit complexity before the PIC18/dsPIC families. Key features include only 58 single-word instructions (single-cycle except for program branches and table reads/writes which are two-cycle), 8-level hardware stack, multiply instruction in a single cycle, and an 8 x 8 hardware multiplier. The OTP program memory allows low-cost prototyping and short-run production, while the wide 2.5V-5V supply range makes the LC variant (low-voltage CMOS) compatible with both 3.3V and 5V system rails. The "08" speed grade specifies an 8 MHz maximum oscillator. Architecture-wise, the PIC17C43 is a Harvard-architecture device with separate program and data buses, enabling simultaneous instruction fetch and operand access - this is the source of its near-1 MIPS/MHz throughput. The 16-bit instruction word gives it a larger code density than PIC16 and a richer instruction set (including hardware multiply), while still sharing the PIC toolchain (MPASM, MPLAB IDE) with the rest of the PIC family. Typical applications include industrial control, instrumentation, automotive body electronics, sensor signal conditioning, and consumer appliances where moderate MIPS and low cost matter more than 16-bit precision. The 33 I/O pins comfortably drive LED arrays, keypads, character LCDs, and UART/SPI peripherals. Designers should note that the PIC17C family is mature/late-life-cycle - new designs are usually steered to PIC18 or dsPIC33, while the PIC17LC43-08I/L remains in service for legacy maintenance and existing production lines. When designing, ensure the OTP window is opened only on windowed packages, verify the brown-out and watchdog configuration bits in code, and budget PLL/wait-state cycles when migrating code from PIC16 sources. This page synthesizes distributor pricing, package-equivalent alternatives, and pinout details not always present in the original datasheet.

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