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PIC17LC756A-08I/PT - 8-bit 8MHz 32KB OTP MCU 64-TQFP | Microchip
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 - 8-bit 8MHz 32KB OTP MCU 68-PLCC | Microchip
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 - 8-bit 8MHz 32KB OTP MCU TQFP-64 | Microchip
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 - 8-bit OTP MCU, 32KB, 8MHz, 68-PLCC | Microchip
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 - 8-Bit 8MHz 32KB OTP MCU 64-TQFP | Microchip
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 - 8-bit OTP MCU, 16KB, 66 I/O, TQFP-80 | Microchip
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 - 8-bit PIC17 RISC MCU 16KB EPROM 84-PLCC | Microchip
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 - 8-Bit 16KB EPROM MCU, 66 I/O | Microchip
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 - 8-Bit 8MHz 16KB OTP MCU | Microchip 84-PLCC
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 - 8-bit 8MHz 16KB OTP MCU 80-TQFP | Microchip
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 - 8-bit MCU, 32KB OTP, 8MHz | Microchip | Industrial
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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PIC17LC766-08I/L - 8-Bit 8MHz 32KB OTP MCU | Microchip | 84-PLCC
PIC17LC766-08I/L

PIC17LC766-08I/L - 8-Bit 8MHz 32KB OTP MCU | Microchip | 84-PLCC

The Microchip Technology PIC17LC766-08I/L is a high-performance 8-bit CMOS EPROM microcontroller from the PIC17 family, delivering 8 MIPS throughput from a 33 MHz clock input with a 121 ns instruction cycle. It integrates 32 KB (16K x 16) of One-Time-Programmable (OTP) program memory, 902 bytes of RAM, and 66 digital I/O pins in a square 84-pin PLCC package (29.31 x 29.31 mm). An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data bus, combining CPU, RAM, non-volatile program memory, and peripherals on a single die. PIC17C-series parts sit at the top of Microchip's 8-bit hierarchy (PIC10/12/16/17/18), pairing a RISC instruction set with a 16-bit-wide program word to maximize code density and execution speed. Key features of the PIC17LC766 include a built-in 10-bit A/D converter, a single-cycle 8x8 hardware multiplier, two-cycle branch and table-read/write operations, an industrial operating temperature range (-40C to +85C), and an LC (low-power CMOS) core designed for 2.5V to 5.5V operation. The 'L' suffix denotes the 84-pin PLCC J-lead surface-mount package, and 'I' marks the industrial temperature grade. The architecture combines a Harvard bus (separate program and data paths) with a 16-bit instruction word and 58 single-word instructions, simplifying code development while delivering predictable real-time performance. The 8x8 hardware multiplier and 16-level hardware stack accelerate math-intensive and interrupt-driven control loops. Typical applications include industrial control systems, motor control front-ends, instrumentation with on-chip A/D, embedded data acquisition, and legacy equipment retrofits. Designers select the PIC17LC766 when 8-bit simplicity, OTP memory, and high I/O count are required. When designing in this MCU, note that OTP memory cannot be re-programmed in-circuit; use the JW (windowed) or QFP variants for prototyping. The 84-pin PLCC requires a socket or reflow profile suited to J-leaded SMT packages. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing PIC17LC766-08I/L.

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PIC17LC766-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip
PIC17LC766-08I/PT

PIC17LC766-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip

The Microchip Technology PIC17LC766-08I/PT is a high-performance 8-bit CMOS EPROM-based microcontroller (MCU) from the PIC17C family, integrating 32KB (16K x 16) of One-Time-Programmable (OTP) program memory with 902 bytes of RAM and 66 digital I/O lines in an 80-pin TQFP (12x12 mm) package. The device runs up to an 8 MHz external clock with a single-cycle instruction execution of 121 ns and operates from a 2.5 V to 5.5 V supply, with an instruction set of only 58 single-word instructions including a single-cycle hardware multiplier. An 8-bit microcontroller (MCU) is a programmable processor that uses an internal 8-bit data bus and combines a CPU, non-volatile program memory, RAM, and peripherals on a single die. Within the broader taxonomy, the PIC17C766 sits in the high-performance tier of Microchip's 8-bit PIC family, above the mid-range PIC16 line and below the enhanced PIC18 line; the full hierarchy is 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Its RISC architecture, hardware multiply and 33 MHz clock-input capability make it one of the most capable 8-bit controllers Microchip has shipped, optimized for control loops and real-time processing. Key features include 10-bit A/D conversion channels for mixed-signal sensing, multiple counter/timer peripherals, a hardware USART, PWM modules, and on-chip EEPROM emulation through the OTP array. The "LC" suffix designates the low-voltage CMOS variant, allowing operation down to 2.5 V for battery-powered designs. The industrial ("I") temperature grade supports -40C to +85C operation. Typical applications include industrial automation and motor control, robotics, HVAC controllers, automotive body and chassis subsystems (where automotive-grade parts are not required), and embedded data-acquisition front ends. The wide digital I/O count (66 pins) and large memory make the device well suited to complex state-machine-driven control panels and user-interface controllers that exceed the capability of mid-range 8-bit MCUs. When designing with this device, note that the OTP memory variant cannot be reprogrammed in-circuit; a windowed CERDIP version exists for prototyping. The Microchip datasheet recommends PIC18F8520 as the newer migration path for new designs that need flash memory and faster execution. Ensure the trace impedance and decoupling layout follow Microchip's reference design for 8-bit PIC controllers running above 4 MHz.

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PIC17LC766T-08/L - 8-bit CMOS MCU, 8MHz, 32KB EPROM, CDIP-40
PIC17LC766T-08/L

PIC17LC766T-08/L - 8-bit CMOS MCU, 8MHz, 32KB EPROM, CDIP-40

The Microchip Technology PIC17LC766T-08/L is a high-performance 8-bit RISC CMOS EPROM microcontroller featuring a 16-bit data bus architecture and 8 MHz maximum clock speed, housed in a 40-pin Plastic DIP (CDIP-40) package. The part integrates 32 KB of one-time-programmable (OTP) EPROM program memory and offers 33 digital I/O ports across its 84-pin package code (QCCJ). A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and programmable I/O peripherals. The PIC17Cxx family represents Microchip's high-tier 8-bit architecture, positioned between the baseline PIC16 family and the 16-bit dsPIC/PIC24 families in the PICmicro hierarchy. The 'LC' suffix denotes a low-voltage CMOS variant (2.5V to 5V operation) suitable for battery-powered and energy-conscious designs where the higher-voltage PIC17C parts would be unsuitable. Key features include a RISC instruction set with only 58 single-word instructions, single-cycle execution at 121 ns (except for program branches and table reads/writes which are two-cycle), a built-in 10-bit A/D converter, and a commercial operating temperature grade. The architecture provides 16-bit-wide instructions and an 8-bit data path, with hardware multiplier support for efficient arithmetic operations. The PIC17LC766 architecture combines Harvard bus separation with a deep instruction pipeline, achieving throughput of up to 8 MIPS at 8 MHz. The OTP EPROM allows factory or prototype programming while supporting field re-programming during development, with on-chip peripherals including timers, USART, and capture/compare/PWM modules typical of the PIC17 family. Typical applications include industrial control systems, instrumentation, motor control interfaces, and embedded communication controllers where moderate code density (32 KB) and a robust 8-bit architecture with extensive I/O are required. The wide 2.5V to 5V supply range allows direct connection to 3.3V or 5V system buses. When designing with this device, ensure external oscillator stability and adequate decoupling on VDD pins. For new designs, consider migrating to the pin-compatible PIC18 family for greater code density and modern peripherals, while preserving the existing toolchain investment. This page synthesizes current distributor pricing, lifecycle status, drop-in PIC17 family alternatives, and practical design notes not found on the Microchip datasheet alone.

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PIC17LC766T-08/PT - 8-bit PIC MCU, 32KB OTP, 80-TQFP | Microchip
PIC17LC766T-08/PT

PIC17LC766T-08/PT - 8-bit PIC MCU, 32KB OTP, 80-TQFP | Microchip

The Microchip Technology PIC17LC766T-08/PT is an 8-bit RISC microcontroller featuring 32KB of One-Time Programmable (OTP) program memory and 902 bytes of RAM, housed in an 80-pin TQFP (Thin Quad Flat Pack) surface-mount package. It belongs to the PIC17C family of high-performance 8-bit microcontrollers, executing 58 single-word instructions with a 121 ns single-cycle execution time at 33 MHz clock input. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripheral interfaces (timers, ADC, I/O, communication ports) on one die. Microcontrollers sit at the core of embedded systems as the lowest-tier processor family, below microprocessors and DSPs in computational complexity but unmatched in cost-effectiveness for deterministic control tasks. The PIC17C family represents one of Microchip's highest-end 8-bit families, intended for applications requiring maximum code density and peripheral integration from the 8-bit portfolio. Key features include 66 digital I/O pins, multiple timer modules, a 12-bit (or 10-bit, family-typical) ADC, USART, and dual-capture/compare/PWM modules. The 80-pin TQFP package exposes the full peripheral set of the family for complex embedded designs. The OTP memory type means the program is written once at production time, suiting high-volume cost-sensitive applications rather than field updates. Architecturally, the PIC17LC766T uses a 16-bit program word with an 8-bit data path, an enhanced Harvard architecture with separate program and data buses for simultaneous fetch and access. The "LC" suffix denotes the low-voltage CMOS variant supporting 3.0V to 5.5V operation, with 8 MHz maximum operating frequency (the "-08" speed suffix) suitable for battery-powered and mixed-voltage designs. Typical applications include industrial control panels, sensor signal conditioning nodes, motor control peripherals, point-of-sale terminals, and automotive body/comfort modules. The wide I/O count supports keypad scanning, multi-segment LED/LCD driving, and parallel sensor aggregation in instrumentation. When designing with this part, note that OTP memory requires a device programmer at production time and cannot be updated in the field. For development, Microchip offers windowed (UV-erasable) and flash variants in the same family — designers typically prototype on flash and migrate to OTP for volume.

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PIC17LC766T-08I/L - 8-Bit 8MHz 32KB OTP MCU 84-PLCC | Microchip
PIC17LC766T-08I/L

PIC17LC766T-08I/L - 8-Bit 8MHz 32KB OTP MCU 84-PLCC | Microchip

The Microchip Technology PIC17LC766T-08I/L is an 8-bit microcontroller from the PIC17C family, providing 32KB (16K x 16) of One-Time Programmable (OTP) program memory, 902 bytes of RAM, and 33 digital I/O lines, housed in a surface-mount 84-pin PLCC (Plastic Leaded Chip Carrier) package measuring 29.31 mm x 29.31 mm. Operating at 8 MHz with a 121 ns instruction cycle (except for two-cycle branches and table reads/writes), the device executes 58 single-word instructions and is targeted at high-performance 8-bit embedded applications. 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 peripherals. Within the embedded hierarchy, an 8-bit MCU sits below 16-bit and 32-bit MCUs in computational throughput but above discrete logic in integration; it remains the lowest-cost solution for deterministic control loops, sensor interfacing, and human-machine interface tasks. The PIC17C family is Microchip's high-end 8-bit line, bridging to the PIC18 architecture that succeeded it. Key features include a wide 2.5 V to 5.5 V supply-voltage range supporting both 3.3 V and 5 V designs, an internal 8 MHz oscillator option, brown-out reset and power-on reset, a 16-bit data bus, an 8-level hardware stack, and capture/compare/PWM peripherals. The OTP program memory enables one-time programming during manufacturing, which lowers per-unit cost versus windowed or flash parts while remaining ideal for high-volume production runs. The PIC17C core uses a RISC-style Harvard architecture with separate program and data buses, allowing instruction fetch and operand access in a single cycle for most opcodes. The 16-bit instruction word packs an opcode plus a literal or address field, which is more efficient than 14-bit PIC16 cores at the cost of slightly larger program memory. The 84-pin PLCC package gives access to the full peripheral set, including the parallel slave port, USART, and multiple timer modules. Typical applications include industrial automation controllers, motor-drive front-ends, automotive body and chassis ECUs, consumer electronics user interfaces, and embedded data-acquisition front-ends. The combination of 32 KB of code space, 33 I/O pins, and an industrial -40 C to +85 C temperature range makes the part well suited to mid-complexity control tasks where higher-bit MCUs are unnecessary. When designing with this device, ensure the OTP programming step is incorporated into the production flow because OTP parts cannot be erased or re-programmed after the programming pulse. Use the PLCC socket footprint for prototype builds so the die can be inspected, and verify that the legacy PIC17C toolchain (MPASM assembler, ICD in-circuit debugger) is available in your build environment, as this family predates the MPLAB X mainstream ecosystem. This page synthesizes distributor pricing, drop-in 84-PLCC PIC17C family alternatives, and practical design notes that are not collated in any single manufacturer document.

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PIC17LC766T-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip
PIC17LC766T-08I/PT

PIC17LC766T-08I/PT - 8-Bit 8MHz 32KB OTP MCU | Microchip

The Microchip Technology PIC17LC766T-08I/PT is an 8-bit PIC17C-family microcontroller built around an enhanced RISC architecture and housed in an 80-pin TQFP (12x12 mm) surface-mount package supplied on tape and reel. It combines an 8 MHz clock speed, 32 KB (16K x 16) of One-Time Programmable (OTP) program memory, and 902 bytes of RAM in a single CMOS die. The device operates across an industrial temperature range of -40°C to +85°C from a 3.0 V to 5.5 V supply, supporting both 3.3 V and 5 V system rails. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable peripherals. The PIC17C family sits at the high end of Microchip's classic 8-bit portfolio, pairing RISC instruction-set efficiency with 16-bit-wide program memory to deliver compact code density and deterministic execution. PIC17C MCUs are typically deployed in industrial control, instrumentation, and embedded designs that demand more compute, memory, and I/O than entry-level PIC16 devices can provide. Key features of the PIC17LC766T-08I/PT include 33 digital I/O lines, an 8 MHz oscillator yielding 121 ns single-cycle instruction execution, 58 single-word instructions, hardware multipliers, multiple timer/counter modules, and a synchronous serial port. The OTP program memory supports one-time field programming, while the TQFP-80 footprint exposes the full peripheral set including external interrupt, capture/compare/PWM, and USART interfaces. The wide 3.0–5.5 V supply tolerance simplifies mixed-voltage system design. Architecturally, the PIC17C766 core is a Harvard-style design with separated program and data buses, an 8-level hardware stack, and direct interrupt handling. The OTP program array is 16 bits wide, which doubles code density relative to 14-bit PIC16 devices. Operating at 8 MHz, most instructions complete in a single 121 ns cycle; program branches and table reads/writes require two cycles. This deterministic timing makes the PIC17LC766T-08I/PT well suited to real-time control loops where predictable latency matters more than raw throughput. Typical applications include industrial automation controllers, instrumentation front-ends, motor control peripherals, embedded sensor hubs, white-goods control boards, and legacy 5 V factory equipment retrofits. The 32 KB OTP allows substantial application logic, state machines, and protocol stacks to be stored on-chip. When designing with this part, note that OTP memory cannot be re-programmed, so choose this variant for production; consider the JW (windowed) or QTP/SQTP equivalents for prototyping. The TQFP-80 footprint requires careful PCB thermal and signal-integrity planning for the high-pin-count interface. This page consolidates distributor pricing, pin-compatible alternatives, application guidance, and design notes not found in the manufacturer datasheet alone.

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PIC18C242-E/SP - 8-Bit PIC MCU, 16KB OTP, 28-Pin SPDIP | Microchip
PIC18C242-E/SP

PIC18C242-E/SP - 8-Bit PIC MCU, 16KB OTP, 28-Pin SPDIP | Microchip

The Microchip PIC18C242-E/SP is an 8-bit RISC microcontroller with 16KB of one-time-programmable (OTP) program memory, 512 bytes of RAM, and 23 digital I/O lines, packaged in a 28-pin SPDIP (Skinny Plastic DIP) through-hole tube. Operating from a 5V supply, the part is rated for the -40C to +125C extended automotive temperature range, as denoted by the "E" temperature suffix in the part number. What is a PIC18C-series microcontroller? The PIC18C family is Microchip's OTP-programmed extension of the PIC18 architecture, providing 10 MIPS throughput (100 ns instruction execution), 77 single-word instructions, and source-code compatibility with the PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX device families. PIC18C devices integrate a high-performance RISC engine, peripherals such as 10-bit A/D converters, PWM modules, USART, and synchronous serial ports, making them a versatile 8-bit platform for embedded control designs that benefit from low unit cost and abundant peripheral integration. Key features of the PIC18C242-E/SP include 16KB OTP program memory, 512 bytes of data RAM, a 10-bit analog-to-digital converter (ADC) module, a Universal Synchronous/Asynchronous Receiver-Transmitter (USART), an MSSP (Master Synchronous Serial Port) supporting SPI and I2C, capture/compare/PWM modules, and 23 I/O pins across four ports (PORTA-PORTC plus partial PORTD-equivalent functions on PORTC). The device executes instructions at 10 MIPS from a 40 MHz oscillator, providing ample headroom for real-time control loops. Architecturally, the PIC18C242 uses a 16-bit instruction word with an 8-bit data path and a hardware multiplier, enabling efficient C code generation. The ADC module supports five input channels in the 28-pin package and integrates sample-and-hold, allowing direct interfacing with analog sensors without external signal conditioning. Typical applications include industrial control modules, automotive body controllers, sensor signal conditioning, motor control low-end loops, appliance control boards, and general-purpose 8-bit embedded systems. The extended -40C to +125C temperature grade and OTP programmability make it particularly suited to high-volume automotive and industrial deployments. When designing with this part, verify the OTP memory constraint: code is programmed once and cannot be erased, so production code must be fully validated on flash-equipped PIC18F siblings (e.g., PIC18F242) before final OTP programming. Decoupling capacitors (100 nF and 10 uF bulk) must be placed within 5 mm of the VDD/VSS pins, and the MCLR reset line should be pulled high through a 10 kohm resistor. This page synthesizes distributor availability, parametric specifications, drop-in replacement candidates, and engineering design guidance not collated on any single distributor page.

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PIC18C242-I/SO - 8-bit 40MHz OTP MCU, 16KB, 28-SOIC | Microchip
PIC18C242-I/SO

PIC18C242-I/SO - 8-bit 40MHz OTP MCU, 16KB, 28-SOIC | Microchip

The Microchip Technology PIC18C242-I/SO is an 8-bit CMOS OTP-based microcontroller in the PIC18C family, delivering 10 MIPS performance (100 ns instruction execution) in a 28-pin SOIC wide-body package. Key headline parameters are 16 KB (8K x 16) of program memory, 512 bytes of data RAM, 23 digital I/O pins, and a 40 MHz (10 MIPS) maximum operating frequency, with a 10-bit multi-channel analog-to-digital converter (ADC) on chip. The I/SO suffix denotes the industrial temperature grade (-40C to +85C) and the SOIC-28 wide-body package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM/OTP), volatile working RAM, peripheral blocks (ADC, timers, UART, SPI, I2C), and general-purpose I/O into one package. Within the broader taxonomy, an MCU sits inside the semiconductor -> integrated circuit -> microcontroller -> 8-bit microcontroller hierarchy. The PIC18C family adds enhanced 16-bit-wide instructions, a hardware multiplier, and C-friendly architecture to the classic PIC baseline, making it a stepping stone to the later PIC18F Flash-based parts. Program memory is One-Time Programmable (OTP), meaning each unit can be programmed once but cannot be electrically erased; this is suitable for low-volume production, educational use, and end products that do not need firmware updates. Key features include 16 KB OTP program memory, 512 B SRAM, 23 I/O, a 10-bit 5-channel ADC, a USART, an SSP (SPI/I2C) module, two 8-bit timers plus one 16-bit timer, and an internal/external oscillator block. The wide 28-SOIC footprint simplifies hand-soldering and breadboard prototyping compared to surface-mount-only packages. The architecture offers 77 single-word instructions, a hardware 8x8 multiplier, and 16-bit instructions that improve C code density, while the 10-bit ADC supports up to 5 analog inputs on the 28-pin device. Typical applications include industrial control loops, motor drive signal conditioning, sensor interfacing with on-chip ADC, embedded educational platforms, low-volume OEM controllers, and legacy product refresh designs where the proven PIC18C instruction set and toolchain are retained. Because the PIC18C line has been superseded by the PIC18F family (notably the recommended PIC18F242), designers should weigh future firmware-iteration needs and supply availability before committing to OTP memory.

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PIC18C242-I/SP - 8-Bit 40MHz 16KB OTP MCU | Microchip
PIC18C242-I/SP

PIC18C242-I/SP - 8-Bit 40MHz 16KB OTP MCU | Microchip

The Microchip PIC18C242-I/SP is an 8-bit RISC CMOS microcontroller based on the PIC18 architecture, packaged in a 28-pin SPDIP (0.300 inch, 7.62 mm). It operates at a maximum clock frequency of 40 MHz, executing instructions at 10 MIPS (100 ns per instruction), and integrates 16 KB of one-time-programmable (OTP) program memory organized as 8K x 16 words plus 512 bytes of data RAM. The device is part of the legacy PIC18C OTP family that was superseded by the flash-based PIC18F series, and Microchip explicitly recommends PIC18F242 as the modern functional replacement for new designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals such as timers, A/D converters, and communication interfaces onto one die. The PIC18 family is the high-performance tier of Microchip's 8-bit PIC architecture, offering an enhanced instruction set of 77 single-word instructions with C-friendly orthogonality, upward compatibility with PIC16 and PIC17 code, and hardware multipliers not present on the PIC16 baseline. PIC18C devices use OTP EPROM for program storage, making them one-time-programmable parts suitable for mature production runs, while PIC18F successors migrated to flash memory for in-system re-programmability. Key features of the PIC18C242 include five 10-bit A/D converter input channels (the 28-pin members of the family have a reduced A/D channel count compared to the 40-pin PIC18C442/452), an Addressable USART (AUSART) for serial communications, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, multiple timers, and parallel I/O. The wide operating voltage range typically spans 2.0 V to 5.5 V, with the industrial (-I) temperature grade covering -40 C to +85 C. Architecturally, the PIC18C242 uses a Harvard memory layout with separate program and data buses, a 16-bit instruction word, and a 31-level deep hardware stack. The OTP cell enables a robust monolithic CMOS process, but at the cost of non-volatility being physically locked after programming, which contrasts with flash-based PIC18F devices that can be re-programmed thousands of times. Typical applications include industrial control nodes, motor control signal conditioning, instrumentation front-ends, and embedded sensor interfaces where a deterministic 8-bit core and simple peripheral mix are sufficient. Designers should consider PIC18F242, PIC18F2520, or PIC18F2525 as modern pin-compatible flash alternatives for new designs requiring in-field firmware updates. When selecting this part, verify the OTP-only constraint of the PIC18C family against the production programming flow: once programmed, parts cannot be re-flashed, so engineering builds must be performed on the PIC18F equivalent during development. A 28-pin SPDIP footprint allows easy breadboard prototyping and through-hole assembly.

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PIC18C242/JW - 40MHz 8-Bit MCU, 16KB EPROM, 28-CerDIP Window | Microchip
PIC18C242/JW

PIC18C242/JW - 40MHz 8-Bit MCU, 16KB EPROM, 28-CerDIP Window | Microchip

The Microchip Technology PIC18C242/JW is an 8-bit RISC microcontroller from the PIC® 18C family, featuring 16KB (8K x 16) of UV-erasable EPROM program memory and operating at up to 40MHz in a 28-pin ceramic DIP (CerDIP) windowed through-hole package. The 'JW' suffix denotes the quartz windowed ceramic package that allows UV erasure for development, prototyping, and reprogramming cycles, distinguishing it from the OTP (One-Time-Programmable) 'P' variants. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals on one die. The PIC18C architecture belongs to the enhanced mid-range family, sitting above the PIC16 baseline and below the dsPIC/PIC24 16-bit families in Microchip's taxonomy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor. The PIC18C core uses a Harvard architecture with separate program and data buses, an 8-bit data path, and a 16-bit instruction word. This dual-bus design lets the CPU fetch instructions while reading/writing data in the same clock cycle, yielding the 40MHz (10 MIPS) throughput. Key features include 16KB EPROM program memory, 768 bytes of data RAM, a 5-channel 8-bit ADC, synchronous/asynchronous serial ports (USART), MSSP for SPI/I2C, capture/compare/PWM modules, and 23 digital I/O pins. The windowed CerDIP package supports development via UV erasure (~20 minutes under 254nm UV lamp). Typical applications include embedded control systems, sensor interfaces, motor control, industrial automation, and legacy product maintenance where windowed parts enable field re-programming. The through-hole 28-CDIP form factor suits breadboard prototypes, educational platforms, and aerospace/defense legacy sustainment programs. When designing with this part, note that the PIC18C series has been superseded by the flash-based PIC18F family (e.g., PIC18F242). The windowed JW variant is generally used only for development; production designs should migrate to PIC18F or PIC18F-Q1 equivalents. Always verify the silicon revision against the datasheet errata before reuse.

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PIC18C242T-E/SO - 8-bit 40MHz PIC MCU 16KB OTP SOIC-28 | Microchip
PIC18C242T-E/SO

PIC18C242T-E/SO - 8-bit 40MHz PIC MCU 16KB OTP SOIC-28 | Microchip

The Microchip Technology PIC18C242T-E/SO is an 8-bit PIC18C-series microcontroller operating up to 40 MHz with 16 KB (8K x 16) of One-Time Programmable (OTP) program memory and 512 bytes of RAM, housed in a 28-pin SOIC wide-body (7.50 mm) package. It supports the PIC18 instruction set with 16-bit wide instructions and an 8-bit wide data path, and operates from a 5 V supply within an extended -40C to +125C temperature range per the "E" (Extended) part suffix. An 8-bit microcontroller is a small single-chip computer that integrates a CPU, program memory, RAM, peripherals (timers, A/D, communication ports), and I/O on a single die. Within the taxonomy, PIC18C242 belongs to Microcontroller -> Embedded Controller -> Integrated Circuit -> Semiconductor. The PIC18 family uses a RISC Harvard architecture with separate program and data buses, enabling single-cycle instruction execution except for branch instructions that take two cycles. Key features include 16 KB OTP program memory (8K x 16), 512 bytes of data RAM, eight priority levels for interrupts, a single-cycle hardware multiplier, and 10 MIPS peak throughput when driven by a 40 MHz oscillator. The 28-pin SOIC variant omits the Parallel Slave Port and reduces A/D input channels to 5 compared to 40-pin package variants. Technical depth: The PIC18C242 combines a 16-bit instruction word for compact code density with an 8-bit data path, allowing efficient C compiler code generation while keeping peripheral registers byte-addressable. The single-cycle hardware 8x8 multiplier accelerates DSP routines such as FIR filters or closed-loop control math, while prioritized interrupts reduce latency for time-critical events. Typical applications include industrial control (sensor interfaces, motor control subsystems), automotive body electronics and instrumentation, consumer appliance control boards, and embedded data acquisition front-ends. The extended temperature range makes it suitable for harsh-environment nodes. When designing with this part, remember that OTP memory cannot be re-programmed - use it on production-intent boards where code is final, or evaluate Flash-based PIC18F242 alternatives such as the PIC18F2420 for prototyping. Decoupling VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin is essential. This page synthesizes distributor pricing, drop-in alternatives, and engineering design notes not found in the standalone Microchip datasheet.

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PIC18C252-E/SO - 32KB OTP 8-bit MCU, 10 MIPS, 28-SOIC | Microchip
PIC18C252-E/SO

PIC18C252-E/SO - 32KB OTP 8-bit MCU, 10 MIPS, 28-SOIC | Microchip

The Microchip PIC18C252-E/SO is a high-performance 8-bit RISC microcontroller with 32 KB (16K x 16) of One-Time-Programmable (OTP) program memory, 1.5 KB of RAM, and a maximum CPU throughput of 10 MIPS (100 ns instruction execution), housed in a 28-pin SOIC (7.50 mm body) package rated for the extended -40C to +125C temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, peripherals, and I/O on a single die. Within the PIC architecture hierarchy, the PIC18C family is the OTP-based, 5V legacy branch, sitting alongside the PIC16 mid-range and PIC17 high-performance lines, and is itself upward compatible with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX devices, providing a seamless migration path to the flash-based PIC18F generation. The PIC18C252 features a Harvard RISC architecture with 77 single-word instructions, 16-bit wide instructions, an 8-bit wide data path, a single-cycle hardware 8x8 multiplier, and a linear data memory space of up to 4 KB. Peripherals include a 10-bit ADC with up to 5 channels, two Capture/Compare/PWM (CCP) modules, USART, MSSP (SPI/I2C), 22 digital I/O pins, and two 8-bit / three 16-bit timers, with separate priority levels for interrupts and an 8x8 hardware multiply that executes in one cycle. Performance is anchored by a 40 MHz maximum external oscillator (DC to 40 MHz primary; 4 MHz to 10 MHz when the PLL is active), giving the 10 MIPS throughput and 100 ns instruction cycle time. The CMOS process and OTP program memory target cost-sensitive high-volume embedded designs where flash reprogramming is not required and the extended -40C to +125C operating range is mandatory. Typical applications include industrial control nodes, automotive body and instrument cluster subsystems, motor-control signal conditioning, sensor interfacing, and legacy PIC16/17 system upgrades that need extra program memory or I/O. New designs should evaluate the recommended Microchip PIC18F252 successor for flash-based reprogrammability, in-circuit debugging, and longer product lifecycle support. When laying out the PCB, place decoupling capacitors (typically 0.1 uF) within 5 mm of VDD/VSS, route MCLR through the recommended RC network with a dioded pull-up, and respect the 28-pin SOIC land pattern exactly - the -E/SO extended-temperature SOIC footprint is the same as the -I/SO industrial part, allowing PCB reuse.

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PIC18C252-E/SP - 8-bit MCU, 32KB OTP, 10 MIPS | Microchip
PIC18C252-E/SP

PIC18C252-E/SP - 8-bit MCU, 32KB OTP, 10 MIPS | Microchip

The Microchip Technology PIC18C252-E/SP is an 8-bit CMOS OTP-based RISC microcontroller built on the PIC18 architecture, delivering up to 10 MIPS of processing power (100 ns instruction execution) in a 28-pin SPDIP through-hole package. Key headline parameters are 32 KB of one-time-programmable (OTP) program memory organized as 16K x 16, 1.5 KB of RAM, 22 I/O pins, a 10-bit ADC, and an extended industrial operating temperature range of -40C to +125C. It operates from a 5 V supply and supports external oscillator frequencies up to 40 MHz. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash/OTP), data memory (RAM), peripherals, and I/O on one die. PIC18-series MCUs belong to the RISC (Reduced Instruction Set Computer) family, where a small, fixed-length instruction set allows most operations to complete in one instruction cycle. The PIC18C252-E/SP is one of the older OTP-programmable members of the PIC18C family, which has since been largely superseded by the flash-based PIC18F family (Microchip itself recommends migrating to PIC18F252). Key differentiating features include an enhanced 16-bit instruction word with an 8-bit data path, 77 single-word instructions, priority-level interrupts, linear data memory addressing up to 4 Kbytes, and a Capture/Compare/PWM (CCP) module. The 28-pin SPDIP package is the same footprint used across most PIC18C/F mid-range parts, simplifying prototype and production migration. On-chip peripherals include timers, a USART, an MSSP (SPI/I2C), and a 10-bit ADC with up to 5 analog input channels on the 28-pin variant. Typical applications for this part include industrial automation controllers, automotive body and chassis subsystems, consumer appliance controls, low-cost sensor front ends, and legacy embedded designs that require a drop-in OTP solution. The 32 KB program memory is well-suited to mid-complexity firmware stacks such as small RTOS implementations, motor control state machines, and multi-protocol bridging code. Design consideration: because this part uses OTP memory, firmware must be mask-programmed or programmed once at production and cannot be field-updated. For new designs or designs requiring firmware revision flexibility, Microchip recommends migrating to the flash-based PIC18F252. Be aware that the older PIC18C silicon carries silicon errata on the CCP module when used in Compare toggle mode - see the datasheet errata sheet before committing the design. This page synthesizes distributor pricing, drop-in Microchip PIC18 same-family alternatives, and practical design notes that complement the Microchip datasheet rather than restating it.

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