Circuitos integrados

PIC17LC44-08I/PT

PIC17LC44-08I/PT - 8-Bit 8MHz OTP MCU 16KB | Microchip

The Microchip Technology PIC17LC44-08I/PT is an 8-bit RISC CMOS OTP microcontroller from the PIC17C family, operating at up to 8 MHz with 8.25 MIPS performance and packaged in a 44-pin TQFP (10x10 mm). The device integrates 16 KB of One-Time-Programmable (OTP) program memory organized as 8K x 16 words, 454 bytes of general-purpose RAM, and 33 digital I/O pins, and it operates from a 2.5 V to 5.5 V supply. The 'LC' suffix denotes the low-voltage CMOS variant optimized for battery- and bus-powered industrial designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, timers, interrupt logic, and peripheral interfaces. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, which lets the CPU fetch an instruction and read data in the same cycle. The PIC17 family specifically targets higher-performance 8-bit designs that need more code space and I/O than the PIC16 family can provide, sitting at the top of Microchip's classic 8-bit lineup before the PIC18 generation. Key features include 58 single-word instructions, single-cycle execution (121 ns at 8 MHz) except for program branches and table reads/writes which take two cycles, an internal data EEPROM emulation scheme via the OTP array, and an instruction set optimized for compiled C efficiency. The 8.25 MIPS throughput simplifies real-time control loops, while the 33 I/O lines support matrix keypads, character LCDs, and parallel sensor interfaces common in industrial human-machine interface modules. The architecture uses a 16-bit-wide instruction word with an 8-bit data path, allowing compact code while keeping peripheral registers byte-addressable. The high-throughput core, combined with hardware multiply assist and table-read/write primitives, makes the PIC17LC44 suitable for control code that previously required a 16-bit MCU. Industrial-grade (-40C to +85C) operation is qualified by the 'I' suffix. Typical applications include industrial control front panels, instrumentation with character LCD or LED displays, motor control interface boards, and legacy embedded systems migrating from PIC16 designs that have outgrown 8 KB of code space. The wide 2.5-5.5 V supply range also allows direct connection to 5 V logic and 3.3 V systems without level shifters. When designing with this part, allocate the OTP array carefully: each byte can only be programmed once, so a code-review discipline and in-circuit emulation (ICE) or simulator pass are recommended before committing code. Decouple VDD/VSS pairs with a 0.1 microfarad ceramic plus a 10 microfarad bulk capacitor, and place MCLR pull-up within 25 mm of the pin. This page synthesizes distributor pricing, drop-in PIC17 family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC17LC44T-08/L

PIC17LC44T-08/L - 8-Bit 8MHz OTP MCU 16KB | Microchip

The Microchip Technology PIC17LC44T-08/L is an 8-bit RISC microcontroller from the PIC17C family, featuring 16KB (8K x 16) of One-Time-Programmable (OTP) program memory and 454 bytes of RAM in a 44-pin PLCC (J-lead) surface-mount package supplied on tape and reel. It executes 58 single-word instructions with a 121 ns single-cycle instruction time (except two-cycle branches and table reads/writes), delivering up to 8 MIPS of throughput at the 8 MHz oscillator frequency. The device integrates 33 digital I/O lines, supports a 16-bit data bus architecture, and operates from a 2.5 V to 5.5 V supply. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral I/O on one die. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, which lets the CPU fetch the next instruction while reading data - the source of the famous 'single-cycle instruction' performance. The PIC17 family sits at the top of Microchip's 8-bit lineup, offering more interrupts, more peripherals, and a wider 16-bit instruction word than the mid-range PIC16 devices, while still preserving the PIC instruction-set compatibility for migration. Key features of the PIC17LC44T-08/L include a 16-level hardware stack, 8 x 8 hardware multiply, multiple timer modules, a USART, and a 10-bit ADC with up to 12 channels. The 33 I/O pins can source/sink up to 25 mA per pin for direct LED drive. The 'LC' suffix denotes the low-voltage CMOS variant, while the '-08' suffix specifies the 8 MHz maximum clock. Tape-and-reel ('T') and PLCC ('L') packaging suit high-volume SMT assembly. Typical applications include industrial control, motor drive, sensor conditioning, embedded control boards, and legacy 8-bit system upgrades. The wide 2.5-5.5 V supply range is convenient for both 3.3 V and 5 V designs. The OTP memory means firmware is mask-programmed at Microchip or field-programmed once via ICSP, suiting high-volume cost-sensitive products rather than field-upgradable firmware. When designing, allocate 5 V-tolerant I/O and follow Microchip's ICSP programming guidelines. Note the PLCC package is now considered legacy for new designs but remains widely used for service replacements of installed equipment.

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PIC17LC44T-08/PT

PIC17LC44T-08/PT - 8-Bit 8MHz 16KB OTP MCU 44-TQFP | Microchip

The Microchip Technology PIC17LC44T-08/PT is an 8-bit RISC microcontroller from the PIC17C series, offering 16 KB (8K x 16) of One-Time-Programmable (OTP) program memory and 454 bytes of RAM in a 44-pin TQFP surface-mount package. The device executes 58 single-word instructions, with most instructions completing in a single cycle of 121 ns at the maximum 8 MHz clock speed; only program branches and table reads/writes require two cycles. According to the verified data, the part operates from a 2.5 V to 5.0 V supply and provides 33 digital I/O pins, making it well suited to medium-complexity embedded designs that need more headroom than 18-pin PIC16 parts but not the full peripheral set of a PIC18. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, program memory, working RAM, digital I/O, and on-chip peripherals such as timers, capture/compare modules, and a synchronous/asynchronous serial port. The PIC17C family sits between the PIC16 baseline/enhanced and the PIC18 families in the broader PIC microcontroller taxonomy (PIC10/12 -> PIC16 -> PIC17 -> PIC18 -> PIC24/dsPIC -> PIC32), targeting higher-performance 8-bit control with a 16-bit wide instruction word and an external data bus option. Key features of the PIC17LC44T-08/PT include its 33 I/O lines, on-chip RC oscillator option, hardware USART, multiple timer modules, and the PIC17 family's hardware multiply support. The OTP program memory provides one-time field programmability, making the part economical for production volumes where the firmware is stable. The wide 2.5 V to 5.0 V supply range lets the device drop into both 3.3 V and 5 V designs without a separate regulator, simplifying BOM and PCB area. Architecturally, the PIC17LC44 uses a Harvard structure with a 16-bit instruction word fetched from program memory while an 8-bit data path moves operands through the file register space. The 454-byte RAM is partitioned into general-purpose registers and special-function registers controlling ports, timers, and the USART. The dual-cycle branch and table-read/write operations are masked by branch prediction and by grouping table look-ups outside time-critical paths in typical C-coded firmware. Typical applications include industrial control front-ends, low-cost motor and solenoid drivers, white goods and appliance user-interface controllers, sensor signal conditioning front-ends, and embedded control boards for HVAC and small automation. The commercial temperature grade and tape-and-reel packaging make it suitable for high-volume factory assembly lines. When designing with this part, confirm that the chosen programmer (e.g. PICSTART Plus, MPLAB PM3, or a third-party Gang programmer) supports OTP blank devices, and verify whether a windowed (UV-erasable) version is required for development. The 33 I/O count and 454-byte RAM limit large table-driven applications, so designers building state-machine-heavy code should budget RAM headroom before locking the firmware. This page synthesizes distributor pricing, same-brand drop-in alternatives in the PIC17C family, and practical OTP-MCU design notes not found in the manufacturer datasheet alone.

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PIC17LC44T-08I/L

PIC17LC44T-08I/L - 8MHz 8-bit OTP MCU, 16KB, 44-PLCC | Microchip

The Microchip Technology PIC17LC44T-08I/L is an 8-bit RISC microcontroller from the PIC® 17C family, featuring 16KB (8K x 16) of One-Time Programmable (OTP) program memory, 454 bytes of RAM, and 33 digital I/O pins, packaged in a 44-pin PLCC (16.59 x 16.59 mm, J-lead) form factor. It executes instructions at 8 MHz with a 121 ns single-cycle instruction time (program branches and table reads/writes are two-cycle, 242 ns), and operates across a 2.5 V to 6.0 V supply range with an industrial temperature grade of -40°C to +85°C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces. The 8-bit PIC17C family uses a RISC Harvard architecture with separate program and data buses, enabling single-cycle instruction execution. As an embedded-class device, the PIC17LC44 sits within a hierarchy: 8-bit MCU -> PIC® 17C sub-family -> PIC17LC44 silicon -> PLCC-packaged industrial variant. This taxonomy helps engineers evaluate compatibility across the broader PIC microcontroller lineup. Key features of the PIC17LC44 include a 33 I/O pin count, hardware multiply, 8-level hardware stack, multiple timer/counter modules, and a peripheral feature set typical of mid-1990s PIC17C designs. The OTP program memory allows one-time field programming via a device programmer, distinguishing this part from UV-erasable EPROM variants. The 8 MHz top speed, combined with the 121 ns instruction cycle, delivers roughly 8 MIPS of throughput, which is well-suited to control loops, sensor processing, and communication front-ends in cost-sensitive industrial designs. Typical applications include industrial control systems, motor control front-ends, instrumentation, embedded communication bridges, and legacy equipment maintenance. The wide 2.5 V to 6.0 V supply tolerance makes the part tolerant of unregulated rails, while the 33 I/O count supports keypad scans, LCD multiplexed drive, and parallel sensor aggregation. Industrial-grade temperature rating enables factory-floor deployment. Designers should consult the PIC17C4x datasheet for pinout specifics: 44-PLCC pin assignments differ from 40-pin DIP variants, and care is required when migrating layouts between PLCC and PQ packages. Programming requires a Microchip-compatible device programmer supporting the PIC17C OTP algorithm.

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PIC17LC44T-08I/PQ

PIC17LC44T-08I/PQ - 8-Bit 8MHz MCU 16KB OTP 44-MQFP | Microchip

The Microchip Technology PIC17LC44T-08I/PQ is an 8-bit RISC microcontroller from the PIC17C family with 16KB (8K x 16) of One-Time Programmable (OTP) program memory, 454 bytes of RAM, and 33 digital I/O pins, operating at up to 8MHz from a 2.5V to 5V supply. Housed in a 44-pin Metric Quad Flat Pack (MQFP, 10x10mm) supplied on Tape & Reel, this LC (low-voltage CMOS) variant targets low-power embedded control. The part executes 58 single-word instructions, most in a single 121 ns cycle (program branches and table reads/writes are 2-cycle), giving an effective throughput suitable for state machines, sensor processing, and human-machine interface glue logic. Background: A microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory (ROM/OTP/Flash), data memory (RAM), and peripherals such as timers, ADC, and I/O on one die. The PIC17C family sits between PIC16 mid-range and PIC18 enhanced parts, providing a RISC Harvard architecture, separate program and data buses, and a higher pin count for I/O-rich designs. OTP variants such as the PIC17LC44 are intended for volume production where firmware is finalized and field re-programmability is unnecessary, offering lower per-unit cost than windowed or flash parts. Key features include the Harvard bus, eight-level hardware stack, 33 I/O ports organized to support parallel peripherals, an 8-bit data bus with 16-bit instruction word, and operating speed DC-33 MHz (8 MHz for the -08 speed grade). On-chip peripherals typically include multiple timers, a USART, and capture/compare/PWM modules per the PIC17C44 datasheet. The 16KB OTP holds 8K single-word instructions; 454 bytes of general-purpose RAM buffer register data and stack operations. Typical applications include industrial control panels, motor-drive interface boards, instrumentation front-ends, automotive body electronics, and embedded legacy upgrades where PIC17 firmware is already deployed. The wide 2.5V-5V supply range enables both 3.3V and 5V system rails, and the 33 I/O allow direct parallel bus expansion to LCD, keypads, or memory-mapped peripherals. The MQFP-44 footprint also simplifies surface-mount assembly on legacy boards designed for the PIC17 family. Designers should observe the 8 MHz oscillator limit, keep I/O sourcing within the 20-25 mA per-pin specification, and add a 0.1 uF decoupling cap adjacent to each VDD/VSS pair. Because this is an OTP device, firmware must be fully validated before programming; prototype with a windowed (JW) or emulation part before committing to production. This page synthesizes distributor pricing, drop-in alternatives from the same PIC17C family, and practical design notes not found in the manufacturer datasheet.

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PIC17LC44T-08I/PT

PIC17LC44T-08I/PT - 8-Bit 8MHz 16KB OTP MCU 44-TQFP | Microchip

The Microchip Technology PIC17LC44T-08I/PT is an 8-bit RISC microcontroller from the PIC17C family, featuring 16KB (8K x 16 words) of One-Time Programmable (OTP) program memory and 454 bytes of data RAM in a 44-pin TQFP surface-mount package. It operates at a maximum clock speed of 8 MHz, executes 58 single-word instructions in a single 121 ns cycle (except program branches and table reads/writes which take two cycles), and includes 33 general-purpose digital I/O lines plus integrated peripherals such as UART/USART, four timer modules, two PWM channels, and a watchdog timer. The 'LC' suffix designates the low-voltage CMOS variant with an operating supply range of 2.5 V to 5.0 V, while the 'I' suffix indicates the industrial temperature grade of -40C to +85C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces onto one die, allowing it to read sensors, drive actuators, and communicate with other chips in real time. The PIC17C family sits above the baseline PIC16 line in Microchip's 8-bit portfolio, offering a wider 16-bit instruction word, a 16-bit address bus, and higher code density suited to embedded control tasks where deterministic interrupt response matters more than raw MHz. Key differentiating features include Harvard architecture separation of program and data buses, an 8-bit-wide ALU fed from a 16-bit instruction stream, hardware multiply assistance on selected instructions, and four hardware interrupt sources to manage real-time events without software polling. Compared with PIC16F parts of the era, the PIC17C44 supplies more I/O pins and a larger instruction set at the cost of higher power per MIPS, which is appropriate for industrial controllers rather than coin-cell applications. Typical applications include industrial automation controllers, motor control front-ends, instrument front panels, point-of-sale terminals, and embedded communication bridges. The integrated PWM and timer resources make it a practical choice for closed-loop fan or pump control where deterministic PWM edges are required. When designing with the PIC17LC44T-08I/PT, confirm that your firmware toolchain targets the PIC17C core - code compiled for PIC16 or PIC18 cores is not binary-compatible. Plan for the OTP window during prototyping, since OTP parts cannot be reprogrammed in-circuit; consider a UV-erasable windowed version or a flash-based PIC18F equivalent for development. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not found in the manufacturer datasheet alone, giving procurement and engineering teams a single reference for sourcing and substituting the PIC17LC44T-08I/PT.

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PIC17LC752-08/L

PIC17LC752-08/L - 8-Bit 8MHz 16KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17LC752-08/L is a high-performance 8-bit CMOS EPROM microcontroller in the PIC17C family, integrating 16KB (8K x 16) of One-Time-Programmable (OTP) program memory, 678 bytes of RAM, and 50 digital I/O lines in a 68-pin PLCC (Plastic Leaded Chip Carrier) package with J-leads. It executes instructions from a 33 MHz clock input at 121 ns per instruction cycle (except branches and table reads/writes, which take two cycles), and operates from a 2.5V to 5.0V supply across the commercial 0C to +70C range. The 17C architecture provides 58 single-word instructions, a 16-bit data path, two 8-bit timers and two 16-bit timers/counters, a USART, an 11-channel 10-bit ADC, PWM/capture/compare peripherals, and a watchdog timer. An EPROM-based microcontroller is a member of the broader category of microcontrollers - self-contained single-chip computers that integrate a CPU, non-volatile program memory, working RAM, and I/O peripherals. The PIC17C family sits hierarchically above 8-bit microcontrollers, within the larger class of embedded controllers, and ultimately within the integrated circuits > microcontrollers category. EPROM-based MCUs were historically used for cost-sensitive production runs where field reprogrammability was not required, and they bridge the gap between mask-ROM MCUs (lowest unit cost at high volumes) and Flash-based MCUs (re-programmability). Key differentiating specifications of the PIC17LC752-08/L include its 16-bit-wide program memory bus (8K x 16 words), 50 high-current I/O pins suitable for direct LED or relay drive, a 33 MHz maximum clock input, and four hardware interrupt sources. Compared with PIC16-family parts, the PIC17C offers an extended instruction set with hardware multiply, a larger register file, and a wider 16-bit program-memory datapath that reduces fetch bottlenecks. Architecturally, the device uses a Harvard architecture with separate program and data paths, a hardware multiply unit, and a multi-source interrupt controller with priority levels. The OTP EPROM cell provides one-time field programming via standard EPROM programmers, and the part is qualified for commercial-temperature operation. Typical applications include industrial control panels, instrumentation front-ends, motor control firmware prototypes, HVAC controllers, point-of-sale terminals, and embedded control boards in commercial equipment where moderate I/O count and 8-bit processing suffice. When designing with this device, note that the OTP memory cannot be re-programmed in-circuit, so firmware must be fully validated before final programming. Allocate one hardware timer for the watchdog to detect firmware lock-ups, and consult the Microchip PIC17C family reference manual for the exact timer-to-peripheral mapping. This page synthesizes distributor pricing from DigiKey and LCSC, drop-in alternatives from Microchip's PIC17C family, and practical design notes not consolidated in the manufacturer datasheet.

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PIC17LC752-08I/L

PIC17LC752-08I/L - 8-bit 8MHz 16KB OTP MCU 50 I/O | Microchip

The Microchip PIC17LC752-08I/L is an 8-bit high-performance CMOS EPROM microcontroller from the PIC17C family, featuring 16KB (8K x 16) of One-Time-Programmable (OTP) program memory, 678 bytes of RAM, and 50 digital I/O lines, all housed in a 68-pin PLCC package (24.23x24.23 mm). It operates at a maximum clock speed of 8 MHz, executing most instructions in a single 121 ns cycle, with only program branches and table reads/writes consuming two cycles. The device supports a 2.5 V to 5.0 V supply voltage range, making it suitable for both 3.3 V and 5 V designs, and integrates a 10-bit analog-to-digital converter for embedded data acquisition. An 8-bit microcontroller is a small computing-on-a-chip device built around an 8-bit data bus, ALU, and on-chip program plus data memory; it executes firmware stored in non-volatile memory and drives discrete I/O and peripherals. Within the broader taxonomy, the PIC17LC752 sits inside the microcontroller hierarchy (microcontroller -> embedded controller -> MCU -> semiconductor) and the Microchip PIC17C sub-family specifically targets high-performance 8-bit applications that previously required 16-bit controllers. The PIC17C family introduced a RISC-style Harvard architecture with 58 single-word instructions, expanded peripheral integration, and wider memory addressing than the PIC16C baseline. Key differentiating specifications include 16KB of OTP program memory, 678 bytes of general-purpose RAM, 50 bidirectional I/O pins (versus the typical 33 of smaller PICs), four 8-bit timer/counters, dual capture/compare/PWM modules, a USART, an MSSP for SPI/I2C, a parallel slave port, and the integrated 10-bit ADC with multiple input channels. The instruction set is optimized with 58 single-word instructions, allowing most operations to complete in 121 ns at 8 MHz, and the device supports up to 8 MHz clock frequency for deterministic real-time control loops. Architecturally, the PIC17LC752-08I/L uses a 16-bit instruction word with separate program and data buses (Harvard architecture) and a 16-level hardware stack that enables fast interrupt servicing. The OTP program memory is field-programmable and is well suited to volume production runs where mask ROM economics are not justified, and the LC variant's 2.5 V to 5.0 V core lets it serve both 3.3 V and 5 V subsystems without a second regulator. Industrial-temperature grade (-40C to +85C) operation is denoted by the 'I' suffix. Typical applications include industrial process control, instrumentation, motor control, embedded data acquisition, and legacy industrial automation equipment that requires many digital I/O lines and an on-board ADC. The 50 I/O count enables direct interface to keypads, displays, and parallel peripherals without external expanders. When designing with this part, note that the OTP memory requires a device programmer and cannot be reprogrammed in-circuit; pair the design with a thorough firmware verification cycle and consider migrating to a flash-based equivalent (for example, PIC18F variants) for field-updatable production units. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Engineers sourcing this part should verify lead time against current Microchip factory schedules, as PIC17C-family OTPs have been progressively superseded by flash-based PIC18F/PIC24 devices.

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PIC17LC752-08I/PT

PIC17LC752-08I/PT - 8-Bit 8MHz CMOS EPROM MCU, 16KB | Microchip

The Microchip Technology PIC17LC752-08I/PT is a high-performance 8-bit CMOS EPROM-based microcontroller delivering 8 MIPS throughput at a 33 MHz oscillator input with a 121 ns instruction cycle. It is offered in a 40-pin PDIP (PT) package and combines a RISC instruction set of only 58 single-word instructions with 16 KB of OTP program memory, 678 bytes of RAM, and 33 digital I/O lines. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (ROM/Flash/OTP), volatile data memory (RAM), and a configurable set of peripherals such as timers, A/D converters, communication ports, and interrupt controllers. Within the broader semiconductor taxonomy, the PIC17LC752 belongs to the 8-bit MCU -> microcontroller -> embedded processor -> semiconductor hierarchy. The PIC17 family specifically targets higher pin-count, higher-performance 8-bit applications that require more peripherals and I/O than the baseline PIC16 family can offer. Key features include a 10-bit A/D converter with up to 12 channels, dual capture/compare/PWM modules, a USART port, an SSP port supporting SPI and I2C, hardware multiplication, and a flexible interrupt controller with vectored interrupts. The OTP program memory is one-time programmable, making this part well suited to mature, high-volume production where field firmware updates are not required. The wide 2.5 V to 5.5 V supply range allows operation from regulated 3.3 V rails or directly from a 5 V system bus. Typical applications include industrial control front-ends, HVAC and appliance controllers, motor control peripheral boards, instrumentation front panels, and embedded sensor hubs where deterministic real-time response matters. The 121 ns single-cycle instruction execution provides predictable interrupt latency that simplifies firmware timing analysis in safety-related control loops. When designing with this device, ensure the EPROM programming window is correctly handled in production programming equipment and that brown-out and watchdog timer settings are tuned to the application. The industrial (-40C to +85C) temperature grade and the legacy PDIP package make the PIC17LC752-08I/PT primarily suited to through-hole industrial designs. This page aggregates distributor pricing, drop-in replacement candidates, and practical engineering guidance that is not compiled in the manufacturer datasheet itself.

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PIC17LC752T-08/L

PIC17LC752T-08/L - 8-Bit 8MHz 16KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17LC752T-08/L is an 8-bit RISC microcontroller from the PIC17C sub-family, featuring 16KB (8K x 16) of One-Time Programmable (OTP) program memory, an 8MHz maximum operating frequency, and 678 bytes of general-purpose RAM, all housed in a 68-pin PLCC (Plastic Leaded Chip Carrier) J-lead surface-mount package measuring 24.23x24.23 mm. It supports a supply voltage range of 2.5V to 5.5V and provides 33 to 50 I/O pins depending on configuration, with hardware peripherals including I2C, SPI, and UART/USART interfaces. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable I/O peripherals on one silicon die. Within the broader taxonomy, 8-bit MCUs sit below 16-bit and 32-bit microcontrollers in arithmetic width but above pure logic ICs in computational capability, and the PIC17 family historically represented Microchip's highest-performance 8-bit architecture with a RISC-style Harvard core, 16-bit-wide instruction bus, and 58 single-word instructions (121 ns execution at 8MHz). PIC17 was the first PIC family to feature a Multiply instruction (8x8 hardware multiplier in one cycle), a hardware stack deeper than 16 levels, and an internal bus architecture designed to compete with mid-range 16-bit controllers of its era. Key features of the PIC17LC752T-08/L include 8MHz core clock, 16KB OTP program memory organized as 8K x 16 instruction words, 678 bytes of data RAM, 33 digital I/O lines, three on-board communication peripherals (I2C, SPI, UART/USART), and a wide 2.5V to 5.5V operating range that supports both 3.3V and 5V system designs. The 'LC' suffix indicates the low-voltage CMOS variant optimized for lower power consumption than the standard PIC17C parts, while the 'T' suffix denotes tape-and-reel packaging for high-volume SMT assembly. Architecturally, the PIC17LC752T-08/L uses a Harvard memory architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The 16-bit instruction word delivers 58 single-cycle instructions (121 ns at 8 MHz), with only program branches and table reads/writes requiring two cycles. An integrated 8x8 hardware multiplier accelerates arithmetic operations, and the device includes multiple interrupt sources, a watchdog timer, and power-saving Sleep mode. Typical applications for this legacy OTP MCU include industrial control subsystems, motor control front-ends, sensor signal processing, automotive body electronics (non-safety-critical), embedded communication bridges, and consumer appliances where 16KB of firmware and 50 I/O pins are sufficient. The 3.3V/5V dual-voltage capability makes it well-suited as a bridge controller in mixed-voltage designs. A critical design consideration when using the PIC17LC752T-08/L is that OTP memory cannot be erased or rewritten, so firmware must be fully validated on UV-erasable windowed samples (PIC17LC752-08/L in ceramic CERDIP) before committing to OTP production. Engineers should also evaluate whether a modern PIC18 or dsPIC33 equivalent (already represented in the Site MPN list) offers better long-term availability and active development tools. This page synthesizes distributor pricing, parametric cross-references, and design notes for engineers evaluating the PIC17LC752T-08/L as either a new design component or a drop-in replacement for an obsolete socket.

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PIC17LC752T-08I/L

PIC17LC752T-08I/L - 8-bit 8MHz 16KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17LC752T-08I/L is an 8-bit microcontroller from the PIC® 17C family, featuring 16KB (8K x 16) of One-Time Programmable (OTP) program memory, 678 bytes of RAM, and 50 digital I/O pins, all housed in a 68-pin PLCC (Plastic Leaded Chip Carrier, J-Lead) package. The device operates at a maximum clock speed of 8 MHz, executes 58 single-word instructions, and delivers most instructions in a single 121 ns cycle, with program branches and table reads/writes requiring two cycles. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a configurable set of peripheral interfaces. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, positioning them in the hierarchy: PIC17 -> PIC microcontroller -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC17C/LC family sits at the high end of Microchip's 8-bit portfolio, targeting applications requiring more I/O, more memory, and faster execution than the PIC16 family. Key features of the PIC17LC752T-08I/L include a 12-channel, 10-bit-resolution Analog-to-Digital (A/D) converter for sensor interfacing, plus three serial communication peripherals: I2C, SPI, and UART/USART. The 'LC' suffix denotes a low-voltage CMOS variant with a 2.5 V to 5.5 V supply range, making it suitable for both 3.3 V and 5 V designs. The 68-pin PLCC footprint gives the designer 50 general-purpose I/O lines, two 8-bit timer/counters, one 16-bit timer/counter, a hardware multiply, and a wide array of interrupts. Architecturally, the PIC17 core uses a 16-bit program word with an 8-bit data path, providing 8 K words of program memory in this 16 KB device. The OTP memory is factory-one-time-programmable - not field-reprogrammable - so the part is suited for production-volume, cost-sensitive embedded products rather than iterative prototyping. Typical applications include industrial control boards, motor-control front-ends, instrumentation front panels, and embedded networking nodes that need multiple serial channels and a moderate-resolution ADC. Because of its 5 V tolerance and rich peripheral set, this MCU is also seen in legacy telecommunication equipment, point-of-sale terminals, and printers. When laying out a board, allocate a 0.6-inch (15.24 mm) PLCC socket footprint for prototyping; production boards typically solder the part directly. The PLCC package has J-leads on all four sides, so a socket can simplify rework. Use a 20 MHz resonator on OSC1/OSC2 even though the rated maximum is 8 MHz, to allow headroom for configuration-bit selection. This page synthesizes distributor stock data, drop-in same-package alternatives, and design notes that go beyond the manufacturer datasheet, giving engineers a faster path to a working BOM.

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PIC17LC752T-08I/PT

PIC17LC752T-08I/PT - 8-Bit MCU 16KB OTP 64-TQFP | Microchip

The Microchip Technology PIC17LC752T-08I/PT is an 8-bit RISC microcontroller based on the PIC17C architecture, featuring 16KB of One-Time Programmable (OTP) program memory, an 8 MHz clock speed, and operation across a 2.5V to 5.5V supply range, all integrated in a 64-pin TQFP package supplied on tape and reel. This member of the legacy PIC17C family supports 33 digital I/O lines and executes a compact, high-performance instruction set designed for embedded control. What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a small computer-on-a-chip that integrates a CPU, program memory, RAM, and peripherals, and uses an 8-bit data path. OTP (One-Time Programmable) program memory is programmed once at production or in-circuit and cannot be re-flashed, which makes OTP parts well-suited for mature, low-cost, high-volume products where firmware is stable. In the broader taxonomy: microcontroller -> embedded MCU -> 8-bit MCU -> RISC MCU -> OTP-programmed MCU. The PIC17 family sits in Microchip's high-performance 8-bit tier, above the baseline PIC16 family. Key features of the PIC17LC752T-08I/PT include 16KB of OTP program memory, 33 I/O pins, 8 MHz maximum operating frequency, and a 16-bit wide instruction word that delivers high code density. Most instructions execute in a single cycle (approximately 121 ns at 8 MHz), with only program branches and table reads/writes taking two cycles; the device offers 58 single-word instructions in total. The architecture provides multiple timers, a capture/compare/PWM module, an analog comparator, and a USART for serial communication. From a technical-design perspective, the PIC17 device uses a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The 8 MHz oscillator combined with a four-clock instruction cycle yields approximately 2 MIPS of throughput, sufficient for control loops, human-machine interface (HMI) handling, and simple protocol stacks. Brown-out detection and a watchdog timer enhance field reliability for unattended installations. Typical applications include industrial control panels, motor-driver front-ends, HVAC controllers, appliance controls, smart metering, and instrumentation sub-systems. The wide 2.5V-5.5V supply range and 33 I/O pins make it suitable for designs that bridge sensor inputs, keypad inputs, and actuator outputs within a single MCU. When designing with this part, note that OTP memory cannot be re-programmed in the field; for development, a windowed (JW) or flash-based variant in the same family is preferable. Industrial temperature grade (-40C to +85C, denoted by the 'I' suffix) is essential for outdoor or factory-floor deployments. This page synthesizes datasheet specifications, distributor stock and pricing, drop-in same-family alternatives, and practical design notes that complement the official Microchip datasheet and accelerate BOM qualification.

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PIC17LC756A-08/PT

PIC17LC756A-08/PT - 8-Bit 8MHz 32KB OTP MCU 64-TQFP | Microchip

The Microchip Technology PIC17LC756A-08/PT is a high-performance 8-bit CMOS EPROM microcontroller from the PIC® 17C family, featuring 32KB (16K x 16) of One-Time-Programmable (OTP) program memory, 902 bytes of RAM, and 50 I/O pins, packaged in a 64-pin TQFP (10x10 mm). It operates at 8 MHz maximum clock input with a 121 ns instruction cycle, delivering up to 8.25 MIPS throughput, and is supplied from a 2.5V to 5.5V range. What is a PIC17 microcontroller? The PIC17C family is Microchip's high-end 8-bit architecture, positioned above the PIC16 mid-range and PIC12 baseline devices. It uses a RISC instruction set with only 58 single-word instructions and an enhanced 16-bit instruction word, supporting linear addressing up to 64 KB of program memory. PIC17 devices are upward compatible with PIC16C5X, PIC12CXXX, and PIC16CXX code, and integrate rich peripherals including multiple timers, a 10-bit ADC, USART, and a hardware multiply engine that were advanced for an 8-bit MCU at its introduction. Key features include 33 I/O ports (per the datasheet package pinout, with the full 50 I/O complement available on the 68-pin variants), eight interrupt sources, a hardware multiplier, and a 16-bit wide data bus for instruction fetches. The OTP memory allows one-time factory or production programming, making the PIC17LC756A well suited for mature production runs where firmware is finalized. The architecture employs a Harvard bus design with separate program and data memory spaces, a 17-level deep hardware stack, and dedicated peripheral I/O mapped into the data space. Unlike flash-based successors such as the PIC18F6520 recommended by Microchip, the OTP variant requires a programmer for each unit, but in exchange provides bit-level reliability and proven long-term data retention. Typical applications include industrial control systems, motor control front-ends, instrumentation, and legacy embedded designs using the PIC17 instruction set. Its 50 I/O pins make it a strong fit for keypad scanning, multi-channel sensor aggregation, and display multiplexing. It is also used in production automotive subsystems and HVAC controllers developed on the PIC17 platform. When designing with this part, ensure your programmer supports the PIC17 OTP family (e.g., MPLAB PM3 or PICSTART Plus) and reserve PCN-protected firmware revision control. For new designs, Microchip recommends migrating to the flash-based PIC18F6520 for reprogrammability and lower supply current. This page synthesizes distributor stock, parametric drops-in to PIC18/PIC17 variants, and practical design notes not found in the standalone manufacturer datasheet.

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PIC17LC756A-08I/PT

PIC17LC756A-08I/PT - 8-bit 8MHz 32KB OTP MCU 64-TQFP | Microchip

The Microchip Technology PIC17LC756A-08I/PT is a high-performance 8-bit CMOS EPROM microcontroller in the PIC17CXXX family, delivering 8.25 MIPS throughput (121 ns instruction cycle) from a 64-pin TQFP (10x10 mm) industrial-temperature package. It integrates 32 KB (16K x 16) of One-Time-Programmable (OTP) program memory and 902 bytes of RAM, with 50 digital I/O lines plus on-chip 10-bit A/D conversion channels and a 16-bit data bus architecture. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. Within the broader semiconductor taxonomy, an MCU sits inside the microcontroller family, which itself is a sub-category of microprocessors and embedded computing devices. PIC microcontrollers use a Harvard RISC architecture and a 16-bit instruction word, so a 32 KB OTP array actually stores 16K instructions, giving them far higher code density than 8051-class devices while retaining a small footprint and deterministic interrupt response. Key features include a maximum clock input of 33 MHz (8 MHz core / 08 speed grade), 2.5 V to 5.5 V single-supply operation, an 8-level hardware stack, and only 58 single-word instructions to learn. The peripheral set covers a 10-bit A/D converter, capture/compare/PWM modules, USART, and synchronous serial port. The LC variant offers low-voltage operation, while the I suffix designates the -40C to +85C industrial temperature grade and the /PT suffix indicates 64-pin TQFP tray packaging. Typical applications include industrial control, motor control, smart-sensor signal conditioning, and embedded communication bridges. The wide 2.5-5.5 V supply range and generous I/O count make it a good fit for replacing discrete logic in cost-sensitive designs. A newer recommended migration is PIC18F6520, which adds Flash memory, more RAM, and improved peripherals while keeping the same 64-pin TQFP footprint. When designing with this part, ensure your programmer supports OTP parts (the LC suffix indicates low-voltage, not low-power) and that the brown-out and watchdog timer configuration bits are correctly set for your application's power profile. Decoupling should use 100 nF ceramic on each VDD pin placed within 5 mm of the IC.

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PIC17LC756AT-08/L

PIC17LC756AT-08/L - 8-bit 8MHz 32KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC17LC756AT-08/L is an 8-bit RISC microcontroller from the PIC 17C family, integrating 32KB of One-Time Programmable (OTP) program memory organized as 16K x 16 and 902 bytes of data RAM. The device runs at a maximum clock speed of 8 MHz and is housed in a 68-pin PLCC (24.23 x 24.23 mm) J-leaded surface-mount package. An 8-bit microcontroller is a single-chip computer built around an 8-bit data bus, an ALU, on-chip program and data memory, and a set of integrated peripherals. In the wider semiconductor taxonomy, the PIC17C family sits between Microchip's PIC16 mid-range and PIC18 enhanced cores. As a member of the legacy PIC17 architecture, the PIC17LC756AT-08/L is one of the highest-performance 8-bit PICs ever produced, executing most instructions in a single 121 ns cycle at 33 MHz MIPS-class throughput, with a RISC instruction set of only 58 single-word instructions. Key features include a 16-bit instruction word (16K x 16 program memory), an integrated 10-bit ADC, dual analog comparators, a USART, an MSSP module supporting both I2C and SPI, four timer/counter modules, and up to 50 digital I/O pins. The LC suffix indicates the low-voltage CMOS variant, supporting operation from 2.5 V to 5.5 V, making it suitable for both 3.3 V and 5 V system designs. The PIC17C architecture is a true 16-bit-enhanced 8-bit core, featuring a 16-bit wide instruction path with an 8-bit data path. The OTP program memory is programmed once and is non-erasable, which makes the PIC17LC756AT-08/L well suited to high-volume production where cost per unit matters more than field re-programmability. Three power-management modes (RUN, IDLE, SLEEP) allow designers to trade off performance versus quiescent current in battery-powered applications. Typical applications include industrial control systems, embedded instrumentation, motor control front-ends, multi-channel data acquisition, and legacy appliance controllers. The high I/O count (50 I/O lines) and integrated ADC make it useful for systems that previously required external logic or a discrete ADC, while the integrated communication peripherals reduce BOM cost. When designing with this device, ensure the PLCC-68 socket or footprint is allocated on the PCB, since this package is now considered a legacy form factor; designers should also plan for OTP programming via Microchip's PRO MATE II or equivalent device programmer during production. The 2.5 V minimum supply voltage allows direct connection to 2- or 3-cell battery stacks without a boost regulator. This page synthesizes distributor pricing, drop-in same-package alternatives (PIC17LC756AT-08I/L, PIC17C756AT-33I/L), and practical design notes not found in the manufacturer datasheet alone.

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PIC17LC756AT-08/PT

PIC17LC756AT-08/PT - 8-bit 8MHz 32KB OTP MCU TQFP-64 | Microchip

The Microchip Technology PIC17LC756AT-08/PT is an 8-bit RISC microcontroller from the legacy PIC17C family, delivering 8 MHz CPU performance from 32 KB (16K x 16) of One-Time Programmable (OTP) program memory in a 64-pin TQFP (10x10 mm) surface-mount package. It integrates 902 bytes of RAM, 33 digital I/O lines, and a 16-bit data bus architecture that enables 121 ns single-cycle instruction execution with only 58 single-word instructions to learn, reducing firmware development overhead. The device operates across a 2.5 V to 5.5 V supply range and integrates hardware I2C, SPI, and UART/USART peripherals for serial communication in embedded designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces. It belongs to the broader category of embedded processors -> microcontrollers -> 8-bit microcontrollers, and serves as the central control element in countless embedded systems where deterministic, low-power control is more important than raw compute throughput. The PIC17C family specifically targets high-performance 8-bit applications that exceed the capability of baseline PIC16 devices while retaining the simple RISC instruction set. Key differentiating features include the 16-bit-wide instruction word (vs. 14-bit on PIC16), which permits richer addressing modes and larger immediate operands, a hardware multiply option, and dual-cycle branch execution that gives 8 MHz clocking an effective throughput comparable to many 16 MHz PIC16 designs. The OTP memory enables fast prototype-to-production transition, while the wide VCC tolerance (2.5 V to 5.5 V) supports both 3.3 V and 5 V system rails. Typical applications for the PIC17LC756AT-08/PT include industrial control panels, motor-drive front-end controllers, automotive body electronics, white-goods user interfaces, and legacy embedded products that were originally designed around the PIC17C architecture. The 64-pin TQFP package offers generous I/O and peripheral count for mid-complexity designs. A key design consideration is the OTP memory nature: firmware must be fully validated before programming because the device cannot be erased. Engineers migrating to flash-based PIC18 or dsPIC33 families should evaluate whether legacy code constraints justify retention of this OTP PIC17C part, or whether a modern flash MCU is more appropriate. This page synthesizes distributor pricing, verified cross-reference data, and practical design guidance not aggregated on the manufacturer datasheet, helping engineers and procurement teams evaluate the PIC17LC756AT-08/PT for both new designs and legacy board replacements.

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PIC17LC756AT-08I/L

PIC17LC756AT-08I/L - 8-bit OTP MCU, 32KB, 8MHz, 68-PLCC | Microchip

The Microchip Technology PIC17LC756AT-08I/L is an 8-bit RISC microcontroller from the PIC® 17C family, featuring 32KB (16K x 16) of One-Time-Programmable (OTP) program memory and 902 bytes of general-purpose RAM, all housed in a 68-pin PLCC (Plastic Leaded Chip Carrier) package measuring 24.23 x 24.23 mm. It operates at a maximum clock speed of 8 MHz, executing the majority of instructions in a single 121 ns cycle (excluding program branches and table reads/writes, which consume two cycles), and supports 58 single-word instructions across the PIC17 instruction set. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces into one device. The PIC17 family sits at the high end of Microchip's 8-bit portfolio, targeting applications that require more memory, I/O, and processing bandwidth than the mid-range PIC16 series can deliver, while remaining considerably simpler than 16-bit dsPIC or 32-bit ARM Cortex-M parts. The LC suffix designates a low-voltage CMOS variant supporting operation from 2.5 V to 5.5 V, broadening its usefulness in mixed-voltage and battery-tolerant designs. Key features include a 12-channel, 10-bit Analog-to-Digital Converter (ADC) for sensor acquisition, three serial communication peripherals (I2C, SPI, and UART/USART), 50 digital I/O lines, and an industrial-grade operating temperature range of -40 °C to +85 °C. The wide supply voltage window (2.5 V to 5.5 V) and the OTP-based program memory make the PIC17LC756AT-08I/L appropriate for moderate-volume embedded products that benefit from a flexible, reprogrammable development cycle followed by a locked production code. Architecturally the device combines an enhanced PIC17 RISC core with Harvard-style separate program and data buses, a high-current drive capability on selected I/O pins, and capture/compare/PWM (CCP) peripherals suitable for motor and timer control. The 32KB OTP program memory is organized as 16K x 16 words to match the 16-bit-wide instruction fetch path, while the 902-byte RAM is byte-addressable for efficient C-compiler code generation. Typical applications include industrial automation controllers, consumer-electronics user-interface panels, motor-control subsystems, sensor hubs with on-board ADC, and legacy embedded designs that are still in production and require a long-life-cycle, RoHS-compliant 8-bit MCU with a known instruction set. Designers familiar with PIC12/PIC16/PIC17 assembly or the MPLAB C17 toolchain can port code with minimal effort. When designing with this part, note that OTP memory can be programmed only once - prototypes should be built with windowed (JW) or UV-erasable variants first, then transitioned to the PIC17LC756AT-08I/L for production. Ensure that the 68-PLCC socket or footprint is laid out with adequate clearance for tooling and consider the device's industrial temperature rating for outdoor or factory environments. This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, lists drop-in replacement MPNs from the same PIC17 family, and combines practical design notes not all gathered in the manufacturer datasheet alone.

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PIC17LC756AT-08I/PT

PIC17LC756AT-08I/PT - 8-Bit 8MHz 32KB OTP MCU 64-TQFP | Microchip

The Microchip Technology PIC17LC756AT-08I/PT is an 8-bit CMOS RISC microcontroller in the PIC17C family, delivering 8.25 MIPS at an 8 MHz clock with 32 KB (16K x 16) of one-time-programmable (OTP) program memory, 902 bytes of RAM, and 50 digital I/O pins. Housed in a 64-pin TQFP (10x10 mm) package with industrial-grade -40C to +85C operating range, it integrates a 16-bit data bus architecture and a 12-bit (or 10-bit) ADC with up to 12 input channels for embedded analog sensing. The core executes instructions in a single 121 ns cycle (except two-cycle branches), supported by 58 single-word instructions, which simplifies firmware development and code density. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (ROM/Flash/OTP), working RAM, peripheral set, and I/O on one die. Microcontrollers sit in the broader hierarchy of embedded processors -> microcontrollers -> 8-bit microcontrollers -> OTP-based microcontrollers. The PIC17C family specifically targets higher-performance 8-bit applications with RISC Harvard architecture, multiple timer/counter modules, USART, and PWM peripherals — bridging the gap between simple 8-bit MCUs and 16-bit dsPIC devices. Key features include an 8 MHz maximum operating frequency, 121 ns instruction cycle, internal EEPROM data memory, dual analog comparators, capture/compare/PWM modules, USART serial port, and a hardware multiplier for faster arithmetic. The wide 2.5 V to 5.5 V supply range supports both 3.3 V and 5 V designs. The device is offered in windowed CERDIP, plastic DIP, and TQFP variants for prototyping and high-volume production. The PIC17C756A architecture uses a 16-bit wide instruction word and a separate 8-bit data path, with Harvard memory structure isolating program and data buses. This enables deterministic single-cycle execution and predictable interrupt latency for real-time control. The device includes up to 12 channels of 12-bit A/D conversion, two PWM outputs, three 16-bit timer/counters, and a USART supporting RS-232/RS-485 communication. Typical applications include industrial motor control, HVAC actuators, smart sensor nodes, automotive body electronics (non-safety), and consumer white-goods control boards. The 50 I/O pins permit direct connection to keypads, LED matrices, and parallel LCDs. Compared to modern PIC18F devices, the PIC17C756A is preferred when legacy codebases or pin-compatible migration from the original PIC17C family is required. Designers should verify that target peripherals and timers match the PIC17LC756A silicon revision before porting code, and add a 0.1 uF decoupling capacitor adjacent to every VDD/VSS pair. Note that Microchip has formally migrated customers to the PIC18F6520 for new designs; the PIC17LC756A remains available for legacy and maintenance programs. This page consolidates distributor pricing, drop-in same-package alternatives within the PIC17 family, and design notes not found in the manufacturer datasheet alone, giving procurement and engineering teams a single reference point for lifecycle decisions.

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PIC17LC762-08/PT

PIC17LC762-08/PT - 8-bit OTP MCU, 16KB, 66 I/O, TQFP-80 | Microchip

The Microchip Technology PIC17LC762-08/PT is a high-performance 8-bit CMOS EPROM microcontroller with 16KB of One-Time Programmable (OTP) program memory and 678 bytes of RAM, housed in an 80-pin TQFP (PT) surface-mount package. It runs at an 8 MHz clock input, executes single-cycle instructions in 121 ns (except branches/table reads which are two-cycle), supports a 2.5V to 5V supply range, and offers 66 I/O pins for direct peripheral interfacing. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, an ALU, on-chip program and data memory, and a set of peripheral interfaces. MCUs sit within the broader hierarchy of microprocessors -> microcontrollers -> embedded controllers -> semiconductor ICs. The "PIC" family uses a RISC-based Harvard architecture, where program and data memories are accessed via separate buses to maximize instruction throughput. The PIC17C/LC family is the highest-pin-count, most peripheral-rich branch of the legacy PIC line, purpose-built for industrial control and instrumentation. Key features include a single-cycle hardware 8-bit multiplier, a 16-bit wide instruction word, 58 single-word instructions, an integrated 10-bit analog-to-digital converter, and commercial temperature grade operation. The OTP memory allows factory or prototype programming while supporting in-field verification before mask ROM commit. Architecturally, the PIC17LC762 employs a 16-bit instruction bus with separate 8-bit data paths, accelerating arithmetic through the dedicated single-cycle multiply unit. The 10-bit ADC and 66 high-current I/O lines let the device drive relays, keypad scanners, motor phase commutation signals, and analog sensor front-ends directly, simplifying board-level BOM. The LC variant specifies a low-voltage core (2.5V minimum), making it suitable for battery-backed or 3.3V system designs. Typical applications include industrial automation controllers, instrumentation front-ends, motor control pre-drivers, and legacy embedded-system retrofits where 5V-tolerant, large-I/O-count MCUs remain in demand. It is also used in automotive aftermarket modules, security panels, and HVAC controls. Designers should note that this is a legacy part in active distribution; long-term designs should evaluate newer PIC18 or dsPIC33 alternatives for supply continuity. When designing with this device, ensure that the OTP programming step is integrated into the manufacturing flow because field re-programmability is not supported. Decouple VDD with at least 0.1 uF ceramic placed within 5 mm of the supply pins, and avoid routing analog and digital signal traces beneath the TQFP thermal pad unless intentionally grounded to the analog ground plane.

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PIC17LC762-08I/L

PIC17LC762-08I/L - 8-bit PIC17 RISC MCU 16KB EPROM 84-PLCC | Microchip

The Microchip Technology PIC17LC762-08I/L is a high-performance 8-bit CMOS EPROM microcontroller built on the RISC-based PIC17 architecture, with 16 KB of one-time-programmable program memory, 678 bytes of RAM, and 66 digital I/O lines, housed in an 84-pin PLCC (Plastic Leaded Chip Carrier) package with J-leads. Operating from a 3.3 V or 5 V supply, it integrates a 10-bit successive-approximation A/D converter, a hardware 8 x 8 single-cycle multiplier, and the enhanced PIC17 instruction set featuring 58 single-word instructions, most of which execute in one instruction cycle (121 ns at 33 MHz oscillator). It targets demanding 8-bit embedded control tasks where deterministic instruction timing, broad peripheral integration, and high pin count matter more than raw clock speed. Background: an 8-bit microcontroller is a self-contained compute engine integrating a CPU, non-volatile program memory (here EPROM/OTP), volatile data RAM, and a mix of timers, communication peripherals, and analog/digital I/O on a single die. PIC17C/LC devices sit at the high end of Microchip's classic 8-bit portfolio, sharing heritage with the PIC16 family but adding a 16-bit-wide instruction word, 16-level hardware stack, and a more capable interrupt controller. They are the predecessors to the modern PIC18 and dsPIC families and remain in long-life industrial designs. Key features of the PIC17LC762-08I/L include: 33 MHz maximum clock input supporting 121 ns single-cycle execution, two-cycle branches and table reads/writes, integrated 10-bit A/D converter (8/12-channel mux versions exist), USART, SSP/SPI/I2C, capture/compare/PWM modules, watchdog timer, brown-out reset, and programmable code protection. The 'LC' suffix indicates the low-voltage (2.5 V-5.5 V) variant, while the 'I' suffix denotes the industrial -40 C to +85 C temperature grade. Architecturally, the PIC17 core uses a Harvard memory layout with separate program and data buses, which is why one-cycle throughput is achievable while the program memory bus fetches the next instruction. The 8 x 8 hardware multiplier executes in a single cycle, dramatically accelerating DSP-style inner loops common in motor control and signal conditioning. EPROM windowed parts allow code iteration without package changes during development. Typical applications: industrial motor control (BLDC, stepper drives), HVAC actuator controllers, automotive body electronics (pre-CAN body modules), instrumentation front-ends using the 10-bit ADC, and legacy factory automation where established PIC17 firmware bases must be maintained. Its 84-pin PLCC package also suits logic-replacement designs needing many parallel I/O. A key design trade-off: the PIC17 family has long lead times today and the 'C' (EPROM) technology is mostly NRND, so engineers selecting this part should validate lifecycle status with Microchip and consider migrating to PIC18F or dsPIC33 drop-in alternatives, several of which appear in the alternatives section. This page synthesizes distributor pricing, drop-in compatible alternatives from Microchip's PIC17/PIC18/dsPIC families, and practical design notes not combined in any single manufacturer document.

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PIC17LC762-08I/PT

PIC17LC762-08I/PT - 8-Bit 16KB EPROM MCU, 66 I/O | Microchip

The Microchip PIC17LC762-08I/PT is a high-performance 8-bit CMOS EPROM microcontroller from the PIC17 family, featuring 16KB of one-time-programmable (OTP) program memory, 678 bytes of RAM, and 66 I/O pins in a 80-pin TQFP surface-mount package. It operates from a 2.5V to 5.5V supply and is rated for the industrial temperature range (-40C to +85C), with a maximum clock input of 33 MHz yielding a 121 ns instruction cycle. A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. The PIC17 family was Microchip's first architecture to use a 16-bit instruction word with an 8-bit data path (modified Harvard architecture) and is widely regarded as the precursor to the modern PIC18 and dsPIC families. Unlike the 12-bit and 14-bit core PIC16 parts, the PIC17 offers a richer instruction set of 58 single-word instructions, a single-cycle hardware multiplier, and a 121 ns instruction cycle at 33 MHz - making it suitable for control loops and signal processing tasks beyond what a baseline PIC16 can handle. Key features include a 10-bit successive-approximation analog-to-digital converter (ADC) with up to 12 input channels, two 8-bit timers plus one 16-bit timer/counter, a USART with RS-485 support, an SSP module for SPI and I2C, a capture/compare/PWM (CCP) module, and 16K x 16 words of OTP program memory. The device also integrates a watchdog timer with its own on-chip RC oscillator for fail-safe operation. Architecturally, the PIC17LC762 uses an enhanced 16-bit instruction pipeline, a hardware 8-bit x 8-bit multiplier that completes in one instruction cycle, and a 16-level deep hardware stack. The LC variant specifically supports low-voltage operation down to 2.5V, distinguishing it from the 5V-only PIC17C762. This part is now mature and remains useful for legacy industrial and embedded designs, though new designs typically use PIC18 or dsPIC33 parts. Typical applications include industrial process control, motor control front-ends, instrumentation data acquisition, automotive body electronics (non-safety), legacy embedded systems, and sensor interfacing boards that require more I/O than a 28-pin PIC16 part can offer but do not need the complexity of a dsPIC. The wide 66-I/O count makes it a fit for human-machine interface (HMI) panels and large keypad/display matrices. When designing with this device, note that OTP memory cannot be reprogrammed in-circuit. For development, use the windowed (JW) UV-erasable ceramic version, or migrate to the flash-based PIC18F family for new designs. The 80-pin TQFP requires a 4-layer PCB with proper thermal vias under the exposed pad for reliable operation above 25 MHz. This page synthesizes distributor stock and pricing data, drop-in compatible same-package alternatives from the PIC17C/PIC17LC families, and practical design notes for the PIC17LC762 that are not collated on any single distributor page.

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PIC17LC762T-08/L

PIC17LC762T-08/L - 8-Bit 8MHz 16KB OTP MCU | Microchip 84-PLCC

The Microchip Technology PIC17LC762T-08/L is an 8-bit RISC microcontroller from the PIC17C family, featuring 16KB (8K x 16) of One-Time-Programmable (OTP) program memory and 678 bytes of general-purpose RAM, housed in an 84-pin PLCC (Plastic Leaded Chip Carrier) J-leaded package measuring 29.31 mm x 29.31 mm. The device operates at a clock speed of 8 MHz, delivering single-cycle instruction execution in 121 ns (except for program branches and table reads/writes, which are two-cycle), giving roughly 4 MIPS throughput across 58 single-word instructions. A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and integrated peripherals. Within the broader taxonomy, the PIC17LC762 belongs to the 8-bit MCU category (microcontroller -> 8-bit MCU -> RISC MCU -> PIC17C family -> OTP variant), a class that targets cost-sensitive embedded control where deterministic single-cycle execution and rich peripheral integration outweigh the need for higher bit width. The PIC17C line is the highest-performance 8-bit family ever shipped by Microchip, predating the dsPIC/PIC24 transition and intended for math-intensive control loops. Key features of the PIC17LC762 include 33 digital I/O lines, a 16-channel 10-bit analog-to-digital converter, three on-chip timer/counters, a Capture/Compare/PWM (CCP) module, and a hardware 8-bit multiplier that executes MULWF in a single instruction cycle. Communication peripherals cover I2C (master/slave), SPI (master/slave), and a UART/USART with on-chip baud-rate generator. On-chip reliability features include Brown-Out Detect/Reset (BOR), Power-On Reset (POR), and a Watchdog Timer (WDT) with its own on-chip RC oscillator. The supply voltage range is 2.5 V to 5.0 V, making the device compatible with both 3.3 V and 5 V system rails. The 'LC' suffix indicates the low-voltage CMOS process variant of the PIC17C762, while the '-08' speed grade designates the 8 MHz maximum clock. The 'T' suffix denotes tape-and-reel packaging, and '/L' identifies the PLCC lead form. The 84-PLCC footprint is JEDEC-standard, allowing socket-mount or hand-solder rework on legacy through-hole boards and SMT adapters. Typical applications include industrial automation controllers, motor-drive front-end logic (BLDC and stepper), automotive body and chassis subsystems, HVAC control boards, and consumer white-goods user-interface modules. The 16 analog inputs are well-suited to multi-zone sensor aggregation (temperature, pressure, level), while the PWM and capture channels handle closed-loop feedback without an external timer IC. When designing with the PIC17LC762, pay attention to the OTP memory constraint: firmware must be fully validated in-circuit-emulation (ICE) or one-time-programmable PROM emulator form before final programming, because OTP parts cannot be erased. Use a 0.1 uF decoupling capacitor on each VDD/VSS pair within 5 mm of the pin, and reserve one I/O line as a firmware-revision jumper for production traceability. This page synthesizes distributor pricing, drop-in Microchip family equivalents, and practical design notes not collected in any single manufacturer datasheet.

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PIC17LC762T-08I/PT

PIC17LC762T-08I/PT - 8-bit 8MHz 16KB OTP MCU 80-TQFP | Microchip

The Microchip PIC17LC762T-08I/PT is an 8-bit high-performance RISC EPROM microcontroller running at 8 MHz clock input with a 121 ns instruction cycle, packaged in an 80-pin TQFP (PT) tape-and-reel format. It integrates 16 KB of OTP program memory, 33 digital I/O lines, a 10-bit analog-to-digital converter, and a single-cycle hardware multiplier within the PIC17C family architecture. The device operates across a 2.5 V to 5 V supply range and supports the full industrial temperature grade. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), working memory (RAM), and programmable I/O peripherals. The PIC17 family is positioned within Microchip's 8-bit MCU hierarchy above PIC16 and below the enhanced 16-bit dsPIC/PIC24 families; it belongs to the broader class of RISC microcontrollers and, ultimately, embedded system semiconductors. MCUs are the central control element in nearly every embedded product, executing firmware that drives sensors, actuators, displays, and communication interfaces. Key features include 58 single-word instructions, single-cycle execution (except for program branches and table reads/writes which take two cycles), a hardware multiply engine that completes in one instruction cycle, and dual 8-bit timer/counters with multiple capture/compare/PWM modes. The 10-bit A/D converter with multiple input channels provides on-chip analog signal acquisition, eliminating external ADC components in many designs. From an architectural standpoint, the PIC17C core uses a 16-bit instruction word with an 8-bit data path, separated program and data buses (Harvard architecture), and a 16-level hardware stack. The OTP program memory variant ('C') is one-time programmable and is typically used in production where firmware is stable; for development, Microchip offers windowed (JW) and Flash (F) variants in the same family. Typical applications include industrial control systems, motor control, sensor signal conditioning, instrumentation, and embedded control boards where deterministic single-cycle instruction execution simplifies real-time firmware design. The wide 2.5 V to 5 V supply range also supports both 3.3 V and 5 V system designs. When designing with this part, verify that the OTP memory capacity (16 KB) is sufficient for production firmware; use the PIC17C762 Flash or emulator equivalent during development to avoid wasting OTP units. The 80-pin TQFP footprint should be checked against PCB thermal and routing budgets - the package's fine pitch requires careful layout for manufacturability.

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PIC17LC766-08/L

PIC17LC766-08/L - 8-bit MCU, 32KB OTP, 8MHz | Microchip | Industrial

The Microchip Technology PIC17LC766-08/L is a high-performance 8-bit CMOS EPROM microcontroller from the PIC17C family, featuring 32KB (16Kx 16) of One-Time-Programmable (OTP) program memory, 902 bytes of RAM, and 66 I/O pins, all housed in an 84-pin PLCC package (29.31 x 29.31 mm, J-Lead). An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data bus. Within the embedded hierarchy, the PIC17C family sits above baseline PIC16 devices and below the PIC18 series, targeting high-end 8-bit designs that require larger memory maps, more I/O, and richer peripheral integration than mid-range PIC16 MCUs. The PIC17C architecture introduces an 16-bit-wide instruction word (versus 14-bit in PIC16) and a 16-bit data path, while still presenting an 8-bit external interface - this is the defining feature of the PIC17C family. Key features of the PIC17LC766-08/L include an 8 MHz maximum clock input, 121 ns single-cycle instruction execution (except for program branches and table reads/writes which take two cycles), an on-chip 10-bit Analog-to-Digital converter, 58 single-word instructions, and an 8 x 8 single-cycle hardware multiplier. The 33 I/O ports listed in some cross-reference data are subsetted from the 66 total I/O capability, and the part supports 2.5V to 5V supply voltage operation. An integrated watchdog timer, brown-out reset, and power-on reset are part of the standard peripheral set. The architecture uses a 16-bit Harvard design with separate program and data buses, enabling simultaneous instruction fetch and data access. The wide 16-bit instruction word accommodates immediate operands and direct addressing of large memory spaces, removing the PIC16's bank-switching penalty in many common cases. The 'LC' suffix indicates the low-voltage CMOS variant (2.5V-5.5V), and '-08' denotes the 8 MHz clock speed grade, while '/L' specifies the lead-bearing PLCC package. Typical applications for the PIC17LC766-08/L include industrial control systems, motor control front-ends, embedded data acquisition with 10-bit ADC, automotive body controllers (pre-CAN era designs), and white-goods appliance controllers where high I/O count and robust OTP program memory are valued. Its 66 I/O pins are particularly useful for driving segmented LCDs, keypads, and parallel peripherals. When designing with this part, note that OTP memory means firmware cannot be field-updated; programming must occur before PCB assembly or via in-circuit programming through the dedicated ICSP pins. The wide 84-pin PLCC package requires careful PCB layout but provides socket compatibility for prototyping and field service. This page synthesizes distributor pricing for the PIC17LC766-08/L, Microchip same-family drop-in alternatives in the 84-pin PLCC footprint, and practical engineering notes not available in the manufacturer datasheet alone.

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PIC17LC756AT-08/PT - 8-bit 8MHz 32KB OTP MCU TQFP-64 | Microchip

PIC17LC756AT-08I/L - 8-bit OTP MCU, 32KB, 8MHz, 68-PLCC | Microchip

PIC17LC756AT-08I/PT - 8-Bit 8MHz 32KB OTP MCU 64-TQFP | Microchip

PIC17LC762-08/PT - 8-bit OTP MCU, 16KB, 66 I/O, TQFP-80 | Microchip

PIC17LC762-08I/L - 8-bit PIC17 RISC MCU 16KB EPROM 84-PLCC | Microchip

PIC17LC762-08I/PT - 8-Bit 16KB EPROM MCU, 66 I/O | Microchip

PIC17LC762T-08/L - 8-Bit 8MHz 16KB OTP MCU | Microchip 84-PLCC

PIC17LC762T-08I/PT - 8-bit 8MHz 16KB OTP MCU 80-TQFP | Microchip

PIC17LC766-08/L - 8-bit MCU, 32KB OTP, 8MHz | Microchip | Industrial