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PIC16LC77-04/P - 8-bit PIC MCU 14KB OTP 4MHz 40-PDIP | Microchip
PIC16LC77-04/P

PIC16LC77-04/P - 8-bit PIC MCU 14KB OTP 4MHz 40-PDIP | Microchip

The Microchip Technology PIC16LC77-04/P is an 8-bit CMOS microcontroller from the PIC16C family with 14KB OTP program memory (8K x 14 words), 368 bytes of data RAM, and 33 digital I/O lines, packaged in a 40-pin PDIP through-hole package. It operates up to 4 MHz from a 2.5V to 6.0V supply, integrates an 8-bit ADC, and is specified over the commercial 0C to +70C temperature range. The part carries the legacy "L" (low-power CMOS) designator in its name and is supplied in tube packaging. What is a PIC microcontroller? PIC (Peripheral Interface Controller) microcontrollers are 8-bit RISC-based Harvard-architecture microcontrollers originally developed by General Instrument's Microelectronics Division and popularized by Microchip Technology. The PIC16 family sits in the mid-range tier of the PIC lineup, offering a balance of performance, peripheral integration, and code density for embedded control. PIC microcontrollers are widely used in industrial, automotive, consumer, and appliance applications, with a hierarchical taxonomy of 8-bit MCU -> RISC MCU -> microcontroller -> embedded IC -> semiconductor. Key features include 14KB OTP program memory enabling one-time programmable firmware storage, 368 bytes of data RAM for variable workspace, an 8-bit on-chip A/D converter for analog signal acquisition, and 33 I/O pins with programmable direction and pull-up configuration. The device also includes a programmable watchdog timer, multiple timer modules, and synchronous/asynchronous serial port support. Technically, the PIC16LC77-04/P uses Microchip's mid-range 14-bit instruction word architecture with a single accumulator (W register) and a 2-stage pipeline. The 4 MHz oscillator yields 1 MIPS of processing performance. Internal oscillator components and the CMOS peripheral bus provide ample drive capability while keeping typical active current low, supporting battery-friendly designs in the 2.5V to 6.0V operating window. Typical applications include industrial control systems, appliance controllers, automotive body electronics (non-safety), instrumentation front-ends, and any legacy PIC16 design migrating from windowed or UV-erasable parts. It is also commonly used in educational lab equipment and OEM products requiring proven PIC16 firmware reuse. When designing with this part, note the OTP (one-time programmable) program memory prevents firmware updates in the field - prototypes should be built on flash-based PIC16F variants (such as the PIC16F77 or PIC16F877A) and ported to the OTP die once firmware is finalized. Plan the ADC input multiplexing and reference selection early to avoid late-stage pin reassignment. This page synthesizes distributor stock levels from Mouser, DigiKey, Octopart, and Jotrin, alongside same-brand drop-in PIC16LC77 variants and cross-brand comparison data not consolidated on any single distributor page.

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PIC16LC77-04/PQ - 8-bit MCU, 14KB OTP, 33 I/O, 4MHz | Microchip
PIC16LC77-04/PQ

PIC16LC77-04/PQ - 8-bit MCU, 14KB OTP, 33 I/O, 4MHz | Microchip

The Microchip PIC16LC77-04/PQ is an 8-bit CMOS RISC microcontroller in the PIC16C7X mid-range family, featuring 14KB of OTP program memory, 368 bytes of data RAM, and 33 digital I/O lines, housed in a 44-pin MQFP package. It operates at a maximum clock frequency of 4 MHz with a wide 2.5V to 6.0V operating voltage range suited for the LC low-power variant, and integrates an 8-channel 8-bit analog-to-digital converter for embedded mixed-signal designs. What is a PIC16 mid-range microcontroller? A PIC16 mid-range MCU is a class of 8-bit Harvard-architecture microcontrollers from Microchip that use a 14-bit instruction word, 35 single-cycle instructions, and a RISC core optimised for deterministic interrupt response and very low active/idle current. Within Microchip's taxonomy, the PIC16C7X family sits between the baseline PIC10/PIC12/PIC16F5x family and the high-performance PIC18 family, occupying the mid-range slot with integrated ADC and on-chip peripherals. Key features include 8K x 14 program words of OTP memory (14KB), 368 bytes of data RAM, 33 digital I/O pins with individual direction control, 8-channel 8-bit A/D converter, two 8-bit timers and one 16-bit timer, a USART module, and a watchdog timer with its own on-chip RC oscillator. The LC suffix designates the 2.5V-6.0V low-voltage/low-power CMOS process variant of the C7X family. The PIC16LC77 uses a Harvard architecture with separate program and data buses, a 14-bit wide program memory bus, and a 35-instruction set that executes most instructions in a single instruction cycle (4 oscillator clocks). This architecture delivers deterministic interrupt latency for real-time control loops and allows the core to maintain throughput while running peripherals such as the ADC and USART in parallel. Typical applications include industrial control panels, instrumentation front-ends, motor control signal conditioning, automotive body modules, and consumer white goods where low-power 8-bit processing is sufficient. The 33 I/O pins allow direct interface to keypads, LCDs, and switch matrices without external glue logic. When designing with this device, allocate pin budget carefully: the MQFP-44 footprint provides 33 I/O but several pins are multiplexed with oscillator, MCLR, and analog inputs, so plan the PCB land pattern and reserve dedicated analog channels for ADC inputs to prevent digital switching noise coupling into conversion results. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers shorten selection cycles and avoid common layout pitfalls.

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PIC16LC77-04/PT - 8-bit 14KB OTP MCU, 33 I/O, 44-TQFP | Microchip
PIC16LC77-04/PT

PIC16LC77-04/PT - 8-bit 14KB OTP MCU, 33 I/O, 44-TQFP | Microchip

The Microchip Technology PIC16LC77-04/PT is an 8-bit CMOS OTP-based RISC microcontroller in a 44-pin TQFP (PT) surface-mount package, delivering 14KB program memory, 368 bytes of RAM, and 33 I/O pins with a 4 MHz maximum clock speed. It is part of the PIC16C/PIC16LC mid-range family, providing 200 ns instruction execution and 35 single-word instructions for compact code density. What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer with a wide-word data path, on-chip program memory, RAM, peripherals, and I/O that executes one 8-bit operation per cycle. The PIC16LC77 sits in the hierarchy: 8-bit microcontroller -> PIC16 mid-range family -> RISC microcontroller -> embedded controller. The "LC" suffix denotes the low-power CMOS process variant, while "-04" indicates the 4 MHz speed grade; the PIC16C77 is the higher-voltage ROM/EPROM counterpart. Key features of this device include 14KB of one-time-programmable (OTP) EPROM, an external oscillator interface, two 8-bit timers and one 16-bit timer, a synchronous/asynchronous serial port (USART/SCI), 8 channels of 8-bit A/D conversion, a watchdog timer with dedicated on-chip RC oscillator, and 33 digital I/O lines. It operates over a wide 2.5 V to 6.0 V supply range (typical 3.3 V or 5 V rails) and supports in-circuit serial programming (ICSP) for field updates. Technically, the PIC16LC77-04/PT uses Harvard architecture with separate program and data buses, a 14-bit wide instruction word, and a 14-level deep hardware stack. The 44-pin TQFP (PT) package provides a compact 10 mm x 10 mm footprint suitable for high-density PCB designs. It is a drop-in functional upgrade to the older PIC16C77 with identical pinout and peripheral set but lower power consumption, allowing modern low-voltage designs to retain the same PCB layout. Typical applications include industrial control systems, HVAC and building automation, sensor interfaces with ADC, automotive body and chassis subsystems, low-power instrumentation, white goods and appliance control, and embedded communication bridges. The 33 I/O and 8 ADC channels make it well suited for systems that need to read many analog sensors while driving relays, displays, or keypads. When designing with this part, ensure the external clock source meets the 4 MHz timing specification for the -04 speed grade; higher-frequency variants exist in the family. The OTP EPROM cannot be re-programmed, so plan for socketed or ICSP-friendly prototypes if iteration is expected.

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PIC16LC77-04I/L - 8-bit 4MHz 14KB OTP MCU 44-PLCC | Microchip
PIC16LC77-04I/L

PIC16LC77-04I/L - 8-bit 4MHz 14KB OTP MCU 44-PLCC | Microchip

The Microchip Technology PIC16LC77-04I/L is an 8-bit CMOS RISC microcontroller belonging to the PIC16C7X mid-range family, integrating 14KB (8K x 14) of One-Time-Programmable (OTP) program memory, 368 bytes of RAM, and 33 digital I/O pins in a 44-pin PLCC package (16.59 x 16.59 mm). The device operates at a maximum clock speed of 4 MHz and supports an extended voltage range of 2.5V to 6.0V, with the "LC" prefix denoting the low-voltage CMOS variant and the "I" suffix indicating the industrial temperature grade of -40C to +85C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, peripherals, and I/O on one die. The PIC16C7X family specifically adds on-chip 8-bit Analog-to-Digital Converter (ADC) channels, making these parts popular for mixed-signal embedded designs. Within the broader taxonomy, an MCU belongs to the embedded processor class, which in turn sits under digital ICs and ultimately semiconductors. The "PIC" architecture uses a RISC-style Harvard design with separate program and data buses, which historically delivered higher code density than competing 8-bit CISC architectures for the same instruction count. Key features of the PIC16LC77-04I/L include 14KB OTP program memory (sufficient for moderate firmware complexity), 368 bytes of data RAM, three timer/counter modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communication, a Capture/Compare/PWM (CCP) module, and an 8-channel 8-bit ADC. The mid-range core uses a 14-bit instruction word with 35 single-cycle instructions, and the device executes most instructions in a single clock cycle, giving an effective throughput close to 4 MIPS at 4 MHz. Typical applications for the PIC16LC77-04I/L span industrial control, automotive body electronics, appliance controllers, sensor interfaces, and low-power embedded products where moderate compute and on-chip ADC suffice. The wide operating voltage range (2.5V to 6.0V) makes the part particularly attractive for battery-backed equipment and 3.3V/5V mixed-rail designs. When designing with this device, engineers should plan for OTP memory constraints: code cannot be field-updated. For prototyping, consider a windowed CERDIP variant, and for production redesign, evaluate flash-based successors such as the PIC16F877A family. Always derate the oscillator for temperature and use decoupling capacitors as recommended in the manufacturer datasheet. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes for engineers evaluating the PIC16LC77-04I/L against modern flash-based replacements.

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PIC16LC77-04I/P - 8-Bit 4MHz 14KB OTP MCU | Microchip
PIC16LC77-04I/P

PIC16LC77-04I/P - 8-Bit 4MHz 14KB OTP MCU | Microchip

The Microchip Technology PIC16LC77-04I/P is an 8-bit PIC microcontroller from the PIC® 16C family, delivering 4 MHz core performance with 14KB (8K x 14) of One-Time Programmable (OTP) program memory and 368 bytes of RAM, housed in a 40-pin PDIP through-hole package. It provides 33 I/O pins and integrated connectivity peripherals (I2C, SPI, UART/USART) for embedded control designs. An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, RAM, non-volatile program memory (here OTP), and peripherals such as timers, ADC, and serial interfaces. MCUs sit at the bottom of the embedded computing hierarchy - above discrete logic, below microprocessors - and are the workhorse of industrial, automotive, appliance, and consumer electronics control loops. The PIC16LC77 specifically belongs to the mid-range PIC family, balancing code density, peripheral integration, and low-power "LC" operation in ASIC design. Key features include the 4 MHz maximum clock speed, 14KB OTP program memory, 368 bytes of SRAM, 33 digital I/O lines, on-chip I2C/SPI/UART serial interfaces, and the 40-pin PDIP package with 15.24 mm (0.600") row spacing suited for breadboard and through-hole prototyping. The "LC" designation indicates low-power CMOS operation, and the "I" suffix marks the industrial temperature grade (-40C to +85C). The "04" speed suffix corresponds to the 4 MHz oscillator rating. The PIC16LC77-04I/P uses a Harvard architecture with a 14-bit instruction word and an 8-bit data path. Its RISC-like instruction set provides deterministic execution and tight code density for C and assembly firmware. The integrated peripherals - capture/compare/PWM, 8-bit ADC, and synchronous/asynchronous serial - support motor control, sensor acquisition, and human-interface applications without external glue logic. Typical applications include industrial control and automation, HVAC and appliance controllers, motor drive sequencing, instrumentation front-ends, and legacy embedded designs. The PDIP-40 package is preferred for development, hobby, and low-volume production where socketed or hand-reworked parts simplify firmware iteration. The OTP memory suits low-cost production runs where the program is finalized at first programming. When designing with this MCU, plan firmware bank-switching carefully because the 14KB program memory limits image size for larger C codebases, and select the appropriate oscillator mode (RC, XT, HS) to match your crystal or resonator. Engineers replacing this part should consult Microchip's PIC16F877A migration guide if FLASH reprogrammability is required in production. This page synthesizes distributor pricing, drop-in alternatives in the same PDIP-40 footprint, and practical design notes not consolidated in the manufacturer datasheet.

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PIC16LC77-04I/PQ - 8-bit 4MHz 14KB OTP MCU 44-MQFP | Microchip
PIC16LC77-04I/PQ

PIC16LC77-04I/PQ - 8-bit 4MHz 14KB OTP MCU 44-MQFP | Microchip

The Microchip Technology PIC16LC77-04I/PQ is a low-cost, high-performance CMOS fully-static 8-bit microcontroller from the PIC16C7X family, integrating an on-chip 10-bit analog-to-digital converter and 14KB (8K x 14) of One-Time-Programmable (OTP) program memory. The device operates at up to 4MHz, delivers 33 digital I/O lines, includes 368 bytes of RAM, and is housed in a 44-pin Metric Quad Flat Pack (MQFP, 10x10mm) surface-mount package rated for the industrial temperature range (-40C to +85C). It is supplied in a tube packaging format, indicated by the trailing PQ suffix, and runs from a 2.5V to 5.5V VDD supply typical for the LC low-voltage CMOS variant of this mid-range PIC architecture. What is a PIC mid-range 8-bit MCU? It is a RISC-based microcontroller from Microchip's PIC family (peripheral interface controller) that uses a Harvard architecture with separate program and data buses, a small instruction set executed in single cycles (except branches), and on-chip peripherals including timers, a 10-bit ADC, and digital I/O. The PIC16C7X line (PIC -> microcontroller -> 8-bit MCU -> embedded microcontroller -> semiconductor) is the mid-range tier that bridges the baseline and enhanced PIC families, providing a balance of code density, peripheral integration, and cost for industrial and consumer embedded applications. Key features include 14KB of OTP program memory, 368 bytes of data RAM, an 8-level hardware stack, an integrated 10-bit multi-channel ADC, three timers (Timer0, Timer1, Timer2), a USART for serial communications, and a watchdog timer with its own on-chip RC oscillator. The CMOS design supports low-power operation with a typical standby current in the microampere range and offers fully static operation that allows the clock to be stopped without losing register contents. The 33 I/O pins can source/sink up to 25mA per pin, enabling direct drive of LEDs and small relays without external drivers. Technical depth: the device uses a 14-bit wide instruction word with 35 single-cycle instructions (excluding branches, which take two cycles), delivering roughly 4 MIPS at 4MHz clock. The LC suffix denotes the low-voltage, low-power CMOS process variant optimized for battery-powered and portable designs, while the 04 speed grade specifies the maximum 4MHz oscillator input. Brown-out reset (BOR) circuitry and a programmable code-protection scheme are mask options often specified at order time; this /PQ variant is the lead-free industrial-grade offering in the 44-MQFP tray package. Typical applications include industrial process control and instrumentation, HVAC sensor interface boards, motor control front-ends, automotive body and chassis subsystems (non-safety), low-cost consumer appliances, embedded control modules with analog sensing, and battery-powered remote sensor nodes. The integrated ADC, generous I/O count, and PIC mid-range peripheral mix make it well suited for mixed-signal control loops where a single chip must read sensors and drive actuators. Design consideration: ensure the VDD decoupling network uses a 0.1uF ceramic capacitor placed within 5mm of the supply pins, and that the MCLR reset circuit includes the recommended 10k pull-up and a 0.1uF cap when in-circuit serial programming is required. Programming requires a Microchip PIC programmer (e.g., PICkit 3, MPLAB ICD) because OTP memory is one-time programmable and cannot be erased - prototypes should be developed with the JW (windowed) or Flash equivalent part to allow iterative debugging. This page synthesizes distributor pricing, drop-in PIC16 family alternatives, and practical OTP vs Flash migration guidance not found in a single datasheet reference.

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PIC16LC77-04I/PT - 8-Bit 4MHz 14KB OTP MCU 44-TQFP | Microchip
PIC16LC77-04I/PT

PIC16LC77-04I/PT - 8-Bit 4MHz 14KB OTP MCU 44-TQFP | Microchip

The Microchip Technology PIC16LC77-04I/PT is a low-power 8-bit CMOS RISC microcontroller from the PIC16C mid-range family, featuring 14KB (8K x 14) of One-Time-Programmable (OTP) program memory, 368 bytes of RAM, and 33 digital I/O pins in a 44-pin TQFP (10x10 mm) package with a maximum CPU clock of 4 MHz. The device integrates a 12-channel 8-bit Analog-to-Digital Converter (ADC), a Universal Synchronous/Asynchronous Receiver/Transmitter (USART/SCI), an SSP module supporting SPI and I2C, two 8-bit timers and one 16-bit timer with capture/compare/PWM capability, and a watchdog timer. A PIC16C-series microcontroller is a Harvard-architecture 8-bit RISC processor with separate program and data buses, manufactured on a low-power CMOS process. Within the broader system hierarchy, it belongs to: microcontroller (MCU) -> embedded controller -> integrated circuit -> semiconductor. The PIC16LC7x family was positioned as a cost-optimized successor to the EPROM-based PIC16C7x family, combining the legacy peripheral set of PIC16C with the OTP-programming economics required for low- to mid-volume industrial designs. The 'LC' suffix designates the 3.3V/5V low-voltage variant, making it suited for battery-powered and portable products. Key features include a 14-bit instruction set, an 8-level deep hardware stack, an operating voltage range of 2.5V to 5.5V (wide-range LC oscillator), an industrial temperature grade of -40C to +85C (denoted by the 'I' suffix), and a programmable code protection mechanism. The '04' speed suffix specifies a 4 MHz maximum oscillator input, while the '/PT' package suffix denotes the 44-pin TQFP (Thin Quad Flat Pack) form factor. The Industrial 'I' operating-temperature grade (-40C to +85C) makes it suitable for non-automotive but thermally demanding environments. The PIC16LC77-04I/PT typically applies to industrial control modules, white-goods user interfaces, low-cost sensor hubs, and consumer appliance controllers where deterministic 8-bit performance, integrated ADC, and small-form-factor TQFP mounting are required. Its combination of 14 KB OTP, 368 B RAM, and 33 I/O is sufficient for state-machine control loops, HMI button/scanning matrices, and PWM-actuated actuator control in a single cycle. Common pairings include the MCP17004, an RS-232 line driver, the MCP2515 CAN stand-alone, or the MCP23X17, low-cost GPIO expanders. When designing with PIC16LC77, ensure that the integrated PCB area allows for the 10x10 TSF footprint and that decoupling is placed within 3 mm of VDD/VSS. The OTP memory cannot be erased and reprogrammed; for field-updateable firmware on the same pinout, consider a Flash-based PIC16F77A-I/PT or PIC16F877A-I/PT within same socket footprint but with 33 I/O.

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PIC16LC770-E/SO - 8-Bit 3.5KB OTP MCU, 20MHz, 20-SOIC | Microchip
PIC16LC770-E/SO

PIC16LC770-E/SO - 8-Bit 3.5KB OTP MCU, 20MHz, 20-SOIC | Microchip

The Microchip Technology PIC16LC770-E/SO is a member of the PIC16C family of 8-bit RISC microcontrollers featuring 3.5KB (2K x 14) of OTP (One-Time Programmable) program memory, 256 bytes of RAM, and a maximum operating frequency of 20 MHz. It is offered in a 20-pin SOIC (Small Outline IC) package, with the E suffix denoting the -40C to +125C extended industrial temperature range. Operating voltage is rated for 3.3V/5V systems, making it suitable for both low-voltage and legacy 5V designs. An 8-bit PIC microcontroller is a compact computing core built on a Harvard RISC architecture that executes instructions fetched from non-volatile program memory while accessing data from a separate RAM bank. Microcontrollers in this class integrate the CPU, memory, and a defined set of peripherals (I/O ports, timers, ADC, comparators) into a single chip, serving as the embedded brain for simple control loops, sensor interfaces, and user-interface tasks. The PIC16LC770 sits within the broader PIC16 mid-range family, between the smaller PIC16F series and the higher-pin-count PIC17/PIC18 devices, and is positioned for cost-sensitive industrial, appliance, and consumer applications. Key specifications include 16 digital I/O pins, a 12-bit 6-channel ADC, two analog comparators, three timers (Timer0/Timer1/Timer2), an internal oscillator, and an instruction cycle time of 200 ns at 20 MHz. The OTP memory means the program is written once and is non-erasable, which is a typical trade-off for cost-driven production runs versus flash-based PIC16F alternatives. According to the manufacturer datasheet, the device supports in-circuit serial programming (ICSP) for factory programming and field updates before sealing. Architecturally, the PIC16LC770 uses a 14-bit instruction word with a single accumulator-based ALU, an 8-level hardware stack for nested subroutines, and a peripheral feature set tuned for analog signal conditioning. The 6-channel 12-bit ADC is a key value-driver versus older 8-bit ADC-equipped PICs, and the dual analog comparators enable standalone threshold detection without CPU loading. Typical applications include industrial control modules, sensor signal conditioning, motor control interfaces, white-goods and appliance controllers, and low-cost data-acquisition front-ends. The wide 3.3V/5V operating range and 20 MHz performance are sufficient for moderate control loops and serial-protocol bridging (UART/SPI/I2C bit-banged or hardware). When designing with the PIC16LC770-E/SO, note that OTP memory cannot be reprogrammed in-circuit by the end user; for development cycles a flash-based sibling such as PIC16F or PIC16LF is recommended, then migrate to OTP for production. Programming must occur before PCB conformal coating. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LC770-E/SS - 8-bit 20MHz 3.5KB OTP MCU 20-SSOP | Microchip
PIC16LC770-E/SS

PIC16LC770-E/SS - 8-bit 20MHz 3.5KB OTP MCU 20-SSOP | Microchip

The Microchip Technology PIC16LC770-E/SS is a member of the PIC® 16C microcontroller family, an 8-bit CMOS RISC MCU with 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 256 bytes of SRAM, and 16 I/O pins, housed in a 20-pin SSOP package. It executes instructions in 200 ns (5 MIPS at 20 MHz) from a 35-instruction RISC instruction set and operates across a 2.5 V to 5.5 V supply range, making it suitable for low-power mixed-voltage designs. A microcontroller (microcontroller unit, MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, peripherals, and I/O on one die. The PIC16LC770 belongs to the PIC® 16C family of 8-bit microcontrollers; taxonomically it sits under microcontroller -> embedded controller -> integrated circuit -> semiconductor. The OTP (One-Time-Programmable) variant uses EPROM cells for program storage - a non-volatile but non-reprogrammable technology favored for cost-sensitive production where code is fixed at manufacture. Key features include 6 channels of 12-bit A/D conversion, 256 bytes of data RAM, two 8-bit and one 16-bit timer/counters, an analog comparator, a synchronous serial port (SSP) supporting both SPI and I²C, and a programmable Low-Voltage Reset (BOR). The 'LC' speed variant draws roughly half the operating current of the standard PIC16C770, while the 'E' suffix marks the industrial extended grade (-40°C to +125°C operating range). Typical applications include industrial sensor signal conditioning with on-chip ADC, battery-powered handheld instruments needing the 2.5 V minimum supply, simple motor-control loops, and analog-front-end subsystems where 12-bit conversion and an analog comparator coexist on the same die. Because the part is OTP, it suits high-volume fixed-code deployments where reprogramming is not required. When designing with this part, plan for OTP code permanence - any firmware bug becomes a hardware re-spin. Allocate four ADC channels minimum as spares for diagnostic multiplexing, and verify BOR threshold against your brown-out requirements. This page combines distributor pricing, drop-in alternative coverage, and design notes not bundled in the Microchip datasheet.

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PIC16LC770-I/P - 3.5KB OTP 8-bit MCU, 20MHz, 20-PDIP | Microchip
PIC16LC770-I/P

PIC16LC770-I/P - 3.5KB OTP 8-bit MCU, 20MHz, 20-PDIP | Microchip

The Microchip Technology PIC16LC770-I/P is an 8-bit CMOS RISC microcontroller in the PIC16C family with 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 256 bytes of RAM, and 16 digital I/O lines, packaged in a 20-pin PDIP (0.300 inch / 7.62 mm) through-hole package. It executes instructions at a 200 ns cycle time (20 MHz oscillator) and operates from 2.5 V to 5.5 V, making it the low-voltage 'LC' member of the PIC16C770 family. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (ROM/Flash/OTP), volatile data RAM, and peripheral blocks such as timers, communication ports, and analog-to-digital converters. The PIC16LC770 belongs to the PIC16 mid-range family, which sits between the baseline PIC10/12/16 series and the enhanced PIC18 series. It uses a Harvard architecture with separate program and data buses, an accumulator-based ALU, and the well-known 35-instruction PIC mid-range instruction set, which is upwards compatible with the PIC16C5X and PIC12CXXX legacy devices. Key features of the PIC16LC770 include a 12-bit Analog-to-Digital converter with up to 6 input channels (suited for sensor readout), a USART module for serial communication, an SSP module supporting SPI and I2C (master/slave), two 8-bit timers (Timer0, Timer2) plus one 16-bit timer (Timer1), a watchdog timer with its own on-chip RC oscillator, and an analog comparator. The device supports in-circuit serial programming (ICSP) and in-circuit debugging via two pins, allowing firmware updates and development without removing the part from the board. Typical applications include low-power sensor interfaces, battery-powered instrumentation, simple motor and valve control loops, white-goods and appliance front-panel controllers, and any cost-sensitive embedded design that needs moderate code density, integrated ADC, and serial connectivity in a through-hole footprint. The 20-PDIP package is especially useful for prototypes, hobby projects, and industrial controllers that prefer through-hole soldering or hand rework. When designing with the PIC16LC770-I/P, note that the program memory is OTP (one-time programmable), so firmware bugs cannot be patched in production units; engineering samples typically use the windowed PIC16CR770 or the flash-based PIC16F877 family during development. Decouple VDD with a 100 nF ceramic capacitor close to the pin and, for ADC accuracy, place a small RC (or ferrite + cap) on AVdd/AVss if used. This page consolidates distributor pricing, cross-brand and same-brand drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet alone, making it easier to evaluate the PIC16LC770-I/P against modern PIC and AVR replacements.

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PIC16LC770-I/SO - 8-bit MCU, 3.5KB OTP, 20MHz, 20-SOIC | Microchip
PIC16LC770-I/SO

PIC16LC770-I/SO - 8-bit MCU, 3.5KB OTP, 20MHz, 20-SOIC | Microchip

The Microchip Technology PIC16LC770-I/SO is an 8-bit RISC microcontroller featuring 3.5KB (2K x 14) of One-Time Programmable (OTP) program memory, 256 bytes of RAM, and 16 digital I/O pins, housed in a 20-pin SOIC (0.295 inch / 7.50 mm width) package. It operates from a 3.3V or 5V supply and runs at up to 20 MHz clock speed with a 14-bit instruction set. An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and peripheral interfaces into a single IC. PIC microcontrollers belong to the microcontroller -> embedded controller -> semiconductor hierarchy, and they execute one instruction per instruction cycle (RISC architecture), giving them deterministic timing suitable for real-time control. The "LC" family designation indicates low-voltage CMOS operation optimized for lower power consumption than the standard "C" family. Key features include a Harvard-architecture RISC CPU with 35 instructions, hardware USART for serial I/O, a 12-bit resolution A/D converter, capture/compare/PWM modules, and an internal watchdog timer for reliable autonomous operation. The wide 3.0V to 5.5V operating range simplifies power design in both battery-powered and line-powered embedded systems. The industrial-grade -40C to +85C operating temperature range makes the PIC16LC770-I/SO suitable for non-automotive industrial environments. Typical applications include industrial control systems, sensor interface boards, low-power embedded controllers, simple motor control, LED display drivers, and battery-powered instrumentation. The 20 MHz clock rate and 14-bit instruction word give ample headroom for state-machine control, basic protocol handling (I2C/SPI/USART), and ADC-driven feedback loops without external logic. When designing with this device, note that the OTP program memory cannot be re-programmed in-circuit - firmware or qualification must be committed during manufacturing. A Flash-based sibling (PIC16F770) is recommended for prototyping and field-upgradable designs. Decoupling capacitors (100nF + 10uF) should be placed close to VDD/VSS pins to ensure ADC accuracy and oscillator stability.

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PIC16LC770/P - 8-Bit 20MHz MCU, 3.5KB OTP, 16 I/O | Microchip
PIC16LC770/P

PIC16LC770/P - 8-Bit 20MHz MCU, 3.5KB OTP, 16 I/O | Microchip

The Microchip Technology PIC16LC770/P is a low-voltage 8-bit CMOS microcontroller in the PIC16 family, offering 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory, 256 bytes of RAM, and 16 digital I/O pins, all housed in a 20-pin PDIP through-hole package. It runs at up to 20 MHz instruction cycle and operates from a 2.5V to 5.5V supply, with on-chip peripherals including a 10-bit ADC, USART, I2C/SPI, two PWM modules, and capture/compare blocks. The OTP memory is suitable for prototype and low-volume production where in-circuit reprogrammability is not required. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripheral interfaces such as ADCs, timers, and serial communication blocks. PIC16 microcontrollers use a RISC (Reduced Instruction Set Computer) Harvard architecture, where program and data memories are separate 14-bit-wide buses. Within Microchip's portfolio, PIC16 sits between the smaller PIC10/PIC12 baseline families and the higher-end PIC18 and dsPIC families, targeting cost-sensitive, mid-complexity embedded designs. Key features of the PIC16LC770/P include 35 instructions at 200 ns per instruction (5 MIPS at 20 MHz), an internal 8 MHz oscillator option, a wide analog front end with 10-bit ADC and analog comparator, a master sync/async serial port (MSSP) configurable for I2C or SPI, an enhanced USART, two 8-bit timers plus one 16-bit timer, and a programmable brown-out reset plus watchdog timer for safety-critical applications. Its low-power operation and rich peripheral mix make it well suited to mixed-signal embedded boards. The architecture combines a 14-bit instruction word, 8-bit data path, hardware stack, and a vectored interrupt controller. OTP program memory (versus Flash) reduces per-unit die cost but trades off field reprogrammability - this is acceptable for closed firmware builds in appliance, industrial sensor, and consumer devices. The ADC's 10-bit resolution and the integrated analog comparator eliminate external signal-conditioning parts in many designs. Typical applications include industrial sensor nodes, motor and pump controllers, low-cost appliance user interfaces, remote control transmitters, automotive body and accessory modules, and analog-front-end data acquisition boards. The 16 I/O count and 20-pin footprint target designs that need analog input plus digital control without exceeding a small PCB budget. When designing with this device, ensure VDD stays within 2.5V-5.5V and that decoupling is placed within 5 mm of the supply pins. Engineers considering OTP variants should plan for chip-swap when iterating firmware, or select the PIC16F770 Flash equivalent for development. This page synthesizes distributor pricing and availability, drop-in same-package alternatives, and practical design notes that complement the manufacturer datasheet for engineers evaluating the PIC16LC770/P for new or legacy embedded designs.

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PIC16LC770/SO - 8-Bit 20MHz CMOS MCU, 3.5KB OTP, 12-bit ADC | Microchip
PIC16LC770/SO

PIC16LC770/SO - 8-Bit 20MHz CMOS MCU, 3.5KB OTP, 12-bit ADC | Microchip

The Microchip Technology PIC16LC770/SO is an 8-bit CMOS microcontroller from Microchip's PIC® 16C family, housed in a 20-pin SOIC (7.50 mm width) package. The device integrates 3.5 KB (2K x 14) of One-Time-Programmable (OTP) program memory, 256 bytes of RAM, a 6-channel 12-bit Analog-to-Digital Converter, and 16 I/O pins, with a maximum clock frequency of 20 MHz. It operates from a 2.5 V to 5.5 V supply and is designed for low-power embedded applications. What is a PIC 8-bit microcontroller? A microcontroller (MCU) is a single-chip computer containing a processor, non-volatile program memory, RAM, and peripheral interfaces (ADC, timers, I/O). PIC16C-series microcontrollers are 8-bit Harvard-architecture MCUs from Microchip Technology, mid-range devices (PIC16) positioned below 16-bit PIC24/dsPIC and 32-bit PIC32 families. The 'LC' suffix indicates an extended-voltage (2.5V-5.5V) CMOS variant optimized for battery and low-power operation, distinct from 'F' (Flash) and standard 'C' EPROM variants. This category sits within the broader hierarchy: microcontroller -> embedded computing -> semiconductor. Key features include a 6-channel 12-bit ADC for high-accuracy analog sampling (uncommon at the 8-bit tier, where 8 or 10-bit is typical), 256 bytes of RAM, an internal oscillator option, and configurable I/O pins with weak pull-ups. The device supports in-circuit serial programming (ICSP) for OTP memory programming in production environments. The 20-SOIC package is a 300-mil (7.50 mm) wide surface-mount outline with through-hole-friendly pin pitch. Technically, the PIC16LC770 employs a RISC-like 14-bit instruction set with a 35-instruction opcode map, 8-level deep hardware stack, and a single accumulator (W) plus memory-mapped file registers. Its 12-bit ADC uses successive-approximation register (SAR) topology with programmable acquisition time, enabling measurement resolutions not achievable with 8/10-bit ADCs of the same generation. The OTP memory uses anti-fuse cells, requiring one-time programming at production. Typical applications include industrial sensor signal conditioning, low-power sensor nodes with analog front-ends, small appliance control, HVAC monitor interfaces, instrumentation, and battery-powered data acquisition devices where the 12-bit ADC gives more headroom than 10-bit alternatives. A key design consideration is that OTP memory cannot be reprogrammed, so firmware development typically uses a Flash or EMULET-package sibling (e.g., PIC16F77) for prototyping, then migrates to the PIC16LC770/SO for production. The wide 2.5V-5.5V input range allows direct operation from a 3.3V or 5V regulated rail. This page synthesizes distributor pricing, drop-in OTP-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LC770/SS - 8-Bit 20MHz OTP MCU 20-SSOP | Microchip
PIC16LC770/SS

PIC16LC770/SS - 8-Bit 20MHz OTP MCU 20-SSOP | Microchip

The Microchip PIC16LC770/SS is an 8-bit RISC microcontroller from the PIC16C family, featuring a 20 MHz CPU, 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory and 256 bytes of RAM, packaged in a 20-pin SSOP (5.30 mm body width, 208 mil). The "LC" suffix designates the low-voltage CMOS variant, intended for operation across a reduced supply range typical of battery-powered and portable designs. According to Microchip datasheet DS30430A, the PIC16LC770 integrates a 12-bit, 6-channel Analog-to-Digital converter, plus I2C and SPI serial interfaces alongside the standard USART, making it a mixed-signal MCU rather than a pure digital controller. An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path, on-chip peripherals, and non-volatile program memory. Within the broader taxonomy it is a microcontroller -> embedded processor -> semiconductor IC -> electronic component. PIC16-series devices follow a Harvard RISC architecture with only 35 single-word instructions, an architecture still used today for deterministic interrupt response and very low power consumption in cost-sensitive applications. Key features of the PIC16LC770 include 6 channels of 12-bit ADC (versus 10-bit on most peers), I2C/SPI peripherals, 16 programmable I/O lines, an internal oscillator option, and a wide operating voltage range suited to the LC variant. The architecture executes one instruction per cycle (200 ns at 20 MHz), and the 14-bit instruction word with 8-bit data bus provides a code-density advantage over typical 8-bit CISC MCUs. Typical applications include industrial sensor signal conditioning with embedded ADC, low-power portable instrumentation, consumer device controllers, and embedded mixed-signal boards requiring both analog and digital I/O in a small 20-pin outline. The combination of OTP memory (one-time programmable, low NRE cost for low-volume runs) and small SSOP package makes this part common in mature, stable designs. Designers should note that OTP memory cannot be reprogrammed, so code verification must occur in a windowed/UV-erasable PIC16C770 variant or an emulator before production programming. Brown-out and watchdog timer peripherals are integrated but must be configured in firmware. For designs that require re-programmability, the PIC16F870 (Flash) is the recommended migration, not an exact drop-in due to its different memory map. This page synthesizes distributor pricing, same-family PIC16C/LC drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LC770T-E/SO - 8-Bit 20MHz MCU, 3.5KB OTP | Microchip
PIC16LC770T-E/SO

PIC16LC770T-E/SO - 8-Bit 20MHz MCU, 3.5KB OTP | Microchip

The Microchip Technology PIC16LC770T-E/SO is an 8-bit PIC microcontroller from the PIC16C family, featuring a 20 MHz core, 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory and 256 bytes of RAM in a 20-pin SOIC package. Operating from a 2.5V to 5.5V supply (LC variant), it integrates Brown-out Detect, Power-On Reset, PWM, and a Watchdog Timer for robust embedded control. A microcontroller (MCU) is a single-chip computer that contains a processor core, program memory, data RAM, and integrated peripherals such as timers, communication interfaces, and analog blocks. MCUs sit at the bottom of the embedded computing hierarchy - they execute firmware stored in non-volatile memory and interact with the physical world via GPIO, ADC, PWM, and serial peripherals. Within that hierarchy, the PIC16C family is positioned as a low-cost, mid-range 8-bit architecture that balances instruction simplicity, deterministic timing, and wide toolchain support. Key differentiating features include the 20 MHz clock rate (5 MIPS throughput), 16 I/O pins, the OTP program memory option, and a 10-bit ADC (per the family). The "LC" prefix denotes the low-voltage variant optimized for 3.3V operation with full 5V tolerance, while the "T" suffix indicates Tape and Reel packaging and "E" denotes the extended operating temperature range of -40°C to +125°C. The PIC16LC770 uses a RISC Harvard architecture with 35 single-cycle instructions, separate program and data buses, and a hardware multiplier-free design that minimizes die cost. OTP memory is factory-programmed once and cannot be erased, making the LC770 ideal for high-volume cost-sensitive production runs where firmware is stable. Typical applications include consumer appliance control, sensor signal conditioning, low-speed motor control via PWM, battery-powered instrumentation, and industrial control subsystems. The wide 2.5-5.5V range and integrated peripherals reduce external component count. When designing with this part, plan for OTP programming during board bring-up and consider PIC16F or PIC16LF flash-based equivalents if in-field firmware updates are required. Always derate I/O pin current below the 25 mA per-pin limit and use proper decoupling. This page synthesizes distributor pricing, verified specifications, drop-in alternative analysis, and practical design notes not found on any single manufacturer or distributor product page.

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PIC16LC770T-E/SS - 8-bit MCU, 3.5KB OTP, 16 I/O | Microchip
PIC16LC770T-E/SS

PIC16LC770T-E/SS - 8-bit MCU, 3.5KB OTP, 16 I/O | Microchip

The Microchip Technology PIC16LC770T-E/SS is an 8-bit RISC microcontroller based on the PIC16C family architecture, delivering 3.5KB (2K x 14) of One-Time-Programmable (OTP) program memory and 256 bytes of RAM in a 20-pin SSOP package. It operates from a 2.5V to 5.5V supply, supports up to 20MHz clock, and provides 16 digital I/O pins suitable for low-voltage, mixed-signal embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable I/O peripherals on one die. The PIC16C/PIC16LC family uses a RISC instruction set with a fixed 14-bit-wide instruction word, allowing most instructions to execute in a single clock cycle. The LC (Low-Voltage CMOS) variant is optimized for operation down to 2.5V, expanding battery-powered and portable application envelopes relative to standard 5V-only PIC16C parts. MCUs sit at the bottom of the embedded system hierarchy, beneath microprocessors and SoCs, serving as dedicated control islands in larger products. Key features include 3.5KB OTP program memory (2K x 14), 256 bytes of data SRAM, an internal 8-bit ADC with multiple channels, two analog comparators, a capture/compare/PWM (CCP) module, a synchronous serial port (SSP) configurable for SPI or I2C, and a USART for asynchronous or synchronous communication. The 16 I/O pins are 5V-tolerant on most ports, and the device supports in-circuit serial programming (ICSP) via two dedicated pins, enabling firmware updates without removing the part from the board. The PIC16LC770 architecture combines a 14-bit instruction word with a Harvard bus, separating program and data memory to improve throughput while keeping the die compact. The CPU executes most instructions in one instruction cycle (4 clock periods), and the integrated peripherals are mapped into a common SFR bank. The LC process technology reduces active and standby current draw versus the original PIC16C die, supporting long-life battery applications. Typical applications include industrial control logic, automotive body controllers, sensor signal conditioning with on-chip ADC, low-speed serial communication bridges using the USART or SSP, and small appliances that require deterministic 8-bit control. The automotive temperature grade (-40C to +125C) makes the part suitable for under-hood and cabin electronics where wider thermal tolerance is required. When designing with this part, remember that OTP memory can be programmed only once; designers should validate firmware on a windowed or flash-based sibling (such as PIC16F770) before committing to OTP for production. Adequate decoupling (100nF plus 10uF bulk) must be placed within a few millimeters of the VDD pin, and unused I/O should be configured as outputs or pulled to a defined logic level to minimize supply current. This page synthesizes distributor pricing from 3+ sources, drop-in same-package alternatives drawn from the PIC16LC770 family, and practical design notes on OTP migration paths not found in the manufacturer datasheet alone.

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PIC16LC770T-I/SO - 8-bit 20MHz OTP MCU 16 I/O | Microchip
PIC16LC770T-I/SO

PIC16LC770T-I/SO - 8-bit 20MHz OTP MCU 16 I/O | Microchip

The Microchip Technology PIC16LC770T-I/SO is an 8-bit PIC16C-series microcontroller featuring a 20 MHz PIC RISC core, 3.5 KB (2K x 14) of OTP program memory and 256 bytes of RAM, packaged in a 20-pin SOIC (SO) wide-body outline. It operates from 2.5 V to 5.5 V and is qualified to the industrial -40C to +85C temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, working RAM, non-volatile data storage, and a set of peripheral blocks such as timers, an ADC, communication ports and I/O. MCUs form the lowest decision-making layer of embedded systems, sitting below application processors and FPGAs in the hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor. The PIC family is built on a Harvard RISC architecture with a small, deterministic instruction set optimized for low power and compact code. Key features include 16 digital I/O pins, a 12-bit multi-channel ADC, two analog comparators, a USART/SCI interface, an I2C/SPI synchronous serial port, two 8-bit timers plus one 16-bit timer with capture/compare/PWM, an internal oscillator and an external oscillator option, and an integrated POR/ELR brown-out reset. The wide-body 20-SOIC (7.50 mm) package provides strong mechanical lead robustness for through-hole-style hand prototyping while still being surface-mount compatible. The PIC16LC770 architecture separates program and data buses (Harvard), uses a 14-bit instruction word for code density and predictable single-cycle ALU op execution, and provides hardware interrupts with prioritized vectoring. Its 12-bit ADC enables precision sensor readings without external converter cost, while the USART and SSP peripherals cover most asynchronous and synchronous fieldbus needs without additional silicon. Typical applications include industrial sensor signal conditioning, motor control feedback loops, battery-powered metering, white-goods user-interface boards, and general-purpose embedded control in appliances. The wide -40C to +85C industrial range and OTP memory make it a fit for fixed-code volume production where firmware stability matters more than field upgrades. When designing with this device, confirm whether your application can tolerate OTP one-time-programmable memory (no in-field firmware updates) or whether a flash-based PIC16F alternative is required. Always place the decoupling capacitor within 5 mm of VDD and use a 100 kohm pull-up on MCLR for clean reset behaviour. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LC770T-I/SS - 8-bit PIC MCU, 3.5KB OTP, 20MHz, SSOP-20 | Microchip
PIC16LC770T-I/SS

PIC16LC770T-I/SS - 8-bit PIC MCU, 3.5KB OTP, 20MHz, SSOP-20 | Microchip

The Microchip Technology PIC16LC770T-I/SS is an 8-bit RISC PIC microcontroller housed in a 20-pin SSOP (Shrink Small Outline Package) and featuring an industry-standard PIC16 mid-range core running at up to 20 MHz. The part ships with 3.5 KB of OTP program memory (organized as 2K × 14 words) and 256 bytes of data RAM, providing enough headroom for compact embedded control loops. The "LC" prefix denotes the 3.0 V to 5.5 V wide operating voltage range, making the device compatible with both battery and regulated-rail designs, while the "-I" suffix indicates the industrial -40 °C to +85 °C temperature grade and the trailing "/SS" designates the SSOP-20 surface-mount package with Tape & Reel packaging (T suffix). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral set on one die. PIC16 series MCUs from Microchip are RISC-based, meaning each instruction executes in one oscillator cycle except for program branches. The PIC16 mid-range family sits between the smaller PIC10/12 baseline parts and the PIC18 enhanced core; it is a workhorse for cost-sensitive, low-power consumer and industrial control such as appliance timers, sensor conditioning, and human-interface peripherals. The PIC16LC770 family extends the family with an enhanced USART, multiple timer modules, a 12-bit ADC, and capture/compare/PWM capability, which differentiates it from the smaller PIC16C7x baseline. Key features of the PIC16LC770 include a 12-bit ADC with up to six input channels, an Enhanced USART supporting RS-232/RS-485, dual 8-bit timer/counters with dedicated prescalers, one 16-bit Capture/Compare/PWM module, and 16 digital I/O pins with individually programmable direction registers. The device also provides an internal watchdog timer with on-chip RC oscillator for unattended recovery, two on-chip analog comparators, and an external interrupt source. Brown-out Reset / Power-on Reset with on-chip POR timer ensures a known startup state on every power cycle. Architecturally the PIC16LC770 uses a Harvard bus design with separate instruction and data paths, allowing instruction fetch and operand read to occur in parallel. The OTP program memory offers one-time-programmable storage, locking the firmware into the die once programmed, which is well-suited to production-cost-sensitive designs that do not require firmware upgrades. The wide 3.0 V to 5.5 V supply window lets the same part run from a 3.3 V digital rail, two alkaline cells, or a 5 V regulated bus. Two power-managed Idle and Sleep modes reduce quiescent current for battery-powered designs, with the analog peripherals shut down in Sleep to avoid false wakeups. Typical applications include appliance control boards, sensor signal conditioning, low-speed serial bridge peripherals, industrial sensor interfaces, small human-interface controllers (keypads and LED indicators), and battery-operated handheld instruments. Designers favor the PIC16LC770 when they need more peripheral capability than the PIC16C711 but do not need the larger flash and code memory of a PIC18 or PIC24 device. Compared to flash-based siblings such as the PIC16F716, the OTP variant lowers per-unit cost in mature, unchanging firmware designs at the expense of field upgradability. For successful design-in, ensure the brown-out voltage is configured above the lowest expected supply rail and that the watchdog timer is enabled for any unattended deployment. The enhanced USART supports both synchronous and asynchronous modes, but its baud-rate generator relies on the system oscillator; an external crystal is recommended when RS-485 timing tolerance is tighter than ±2 %. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, including a comparison_table that lines up package, memory, and ADC parameters against verified pin-compatible drop-in alternatives.

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PIC16LC770T/SS - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
PIC16LC770T/SS

PIC16LC770T/SS - 8-Bit 20MHz OTP MCU 3.5KB | Microchip

The Microchip Technology PIC16LC770T/SS is an 8-bit RISC microcontroller built on the PIC® 16C architecture, operating at up to 20 MHz with 3.5 KB (2K x 14) of One-Time Programmable (OTP) program memory and 256 bytes of RAM, housed in a 20-pin SSOP (5.30 mm body width) surface-mount package. It operates from a 2.5 V to 5.5 V supply, drawing a typical active current of 2 mA at 5 V / 4 MHz and supporting a commercial 0 °C to +70 °C ambient temperature range, with the trailing /SS suffix denoting SSOP package and the 'T' denoting tape-and-reel packaging. An OTP microcontroller is a non-flashless Flash Online-erasable variant of a programmable MCU: code is written once and retained permanently without the need for an in-circuit programmer. PIC microcontrollers integrate a Harvard RISC core, on-chip non-volatile memory, peripherals, and a CPU on a single die - the PIC16LC770T/SS belongs to the PIC16 mid-range family, sitting in the hierarchy microcontroller -> MCU -> embedded controller -> semiconductor, with the OTP variant of this family offering low unit cost for mature production runs. Key features of this device include 16 I/O pins (with individual direction control), a 5-channel 8-bit ADC, two 8-bit timers (Timer0/Timer2) plus one 16-bit timer (Timer1), an enhanced CCP module, a Universal Synchronous/Asynchronous Receiver-Transmitter (USART/SCI), and an SSP peripheral for SPI/I2C master-slave communications. Additional capabilities include power-on reset, brown-out reset (BOR), a watchdog timer with on-chip RC oscillator, and an In-Circuit Serial Programming (ICSP) interface. The 8-bit RISC architecture executes most instructions in a single cycle, and the high-performance Harvard bus separates program (14-bit wide) and data (8-bit wide) paths to avoid fetch-execute bottlenecks. The mid-range core provides 35 single-word instructions, 8-level hardware stack, and direct/indirect addressing modes with FSR register-based memory banking. Integrated analog and digital peripherals reduce BOM cost in compact embedded designs. Typical applications include low-cost consumer appliances, sensor signal conditioning front-ends, simple motor control drivers, LED lighting controllers, and industrial control logic where OTP program security and small-form-factor SSOP packaging are preferred. It is also used in appliance user-interface boards and HVAC thermostat controllers that require reliable fixed-code execution. When designing with the PIC16LC770T/SS, ensure the OTP programming is performed before final assembly since OTP parts cannot be reprogrammed; the ICSP header should still be accessible for one-time production programming. The 20-pin SSOP footprint requires standard surface-mount reflow and a 0.65 mm lead pitch pad pattern.

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PIC16LC771-E/P - 8-Bit 20MHz 7KB OTP MCU with 12-bit ADC | Microchip
PIC16LC771-E/P

PIC16LC771-E/P - 8-Bit 20MHz 7KB OTP MCU with 12-bit ADC | Microchip

The Microchip Technology PIC16LC771-E/P is an 8-bit CMOS microcontroller from the PIC16C family, featuring 7KB (4K x 14) One-Time Programmable (OTP) program memory, 256 bytes of RAM, and a 20MHz maximum operating frequency in a 20-pin PDIP through-hole package. Designed for low-voltage (LC variant) operation, it operates from 2.5V to 5.5V and integrates a 12-bit A/D converter with up to 6 input channels for high-resolution analog acquisition alongside the digital core. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/OTP/Flash), data memory (RAM), and peripheral interfaces onto one die. The "LC" prefix indicates a low-voltage CMOS variant optimized for battery-friendly operation, while "C-series" devices use the legacy PIC16 Harvard core with 14-bit instruction words. In the broader taxonomy, MCUs sit within the embedded computing family, between microprocessors (MPUs) and digital signal controllers (DSCs). Key specifications of the PIC16LC771-E/P include: 256 bytes of data RAM, 7KB OTP program memory, 12-bit ADC with 6 channels, I2C and SPI serial interfaces, 16 digital I/O pins, and an operating temperature range of -40C to +125C for the extended (-E) industrial grade. The OTP memory enables one-time factory or field programming via Microchip's development toolchain, with code-protect and low-power Sleep modes available. The 20-PDIP package is 0.300 inch (7.62mm) wide and supports through-hole assembly for prototyping and industrial designs. Architecturally, the PIC16LC771 uses a RISC Harvard core with separate program and data buses, providing predictable instruction timing (most instructions execute in one instruction cycle of 200ns at 20MHz). Its integrated peripherals are mapped to dedicated SFR registers and include a 12-bit successive-approximation ADC, an enhanced USART, an MSSP module for SPI/I2C, and three timers. This peripheral mix targets mixed-signal embedded designs that need precise analog readout without a separate ADC chip. Typical applications include industrial sensor signal conditioning, low-power data acquisition front-ends, battery-powered instrumentation, motor control auxiliary logic, and embedded control boards requiring moderate analog resolution. Its wide analog channel count and 12-bit ADC resolution make it well suited for multi-channel temperature, pressure, or process-variable monitoring. When designing with this device, ensure your power rail stays within the 2.5V-5.5V LC window. OTP memory requires a programmer such as MPLAB PM3 and cannot be erased, so prototype on a flash-equipped sibling (PIC16F77) before committing to OTP. Place a 0.1uF decoupling capacitor within 5mm of VDD and route the AVSS/AVDD pair as a Kelvin connection for best ADC accuracy. This page synthesizes distributor pricing, parametric comparison tables, drop-in replacement alternatives, and practical design notes that complement - but go beyond - the manufacturer datasheet.

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PIC16LC771-E/SO - 8-bit 7KB OTP MCU, 20MHz, 20-SOIC | Microchip
PIC16LC771-E/SO

PIC16LC771-E/SO - 8-bit 7KB OTP MCU, 20MHz, 20-SOIC | Microchip

The Microchip Technology PIC16LC771-E/SO is an 8-bit RISC microcontroller from the PIC16C family, featuring 7KB of OTP program memory (4K x 14), 256 bytes of RAM, and a 20MHz maximum clock speed. Housed in a 20-pin SOIC package, it is the "LC" (low-power CMOS) variant of the PIC16C771, designed for applications requiring reduced power consumption with 16 I/O pins, integrated analog peripherals, and standard PIC mid-range peripherals. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (here, OTP - one-time programmable), volatile data memory (RAM), and programmable I/O peripherals into one IC. Within the embedded hierarchy, MCUs sit below microprocessors in complexity but above simple logic ICs; the PIC16 family specifically targets 8-bit low-to-mid-range applications including sensing, control loops, and human-interface products. The PIC16LC771 belongs to the "LC" sub-family that operates over an extended voltage range while drawing lower quiescent current than the standard "C" versions. Key features include a 14-bit instruction set, 8-channel 8-bit ADC, two analog comparators, capture/compare/PWM (CCP) module, USART with addressable synchronous mode, and synchronous serial port (SSP) supporting SPI and I2C. The LC variant supports 2.5V to 5.5V operation, suitable for both 3.3V and 5V rails, with typical active current around 2-5 mA at 4MHz and standby currents in the microamp range. Architecturally, the PIC16LC771 uses a Harvard RISC architecture with separate program and data buses, providing deterministic instruction timing of 200ns at 20MHz. The OTP program memory is one-time programmable, making this part suitable for mature production where firmware is locked and no field updates are expected, unlike the flash-based PIC16F equivalents. Typical applications include industrial sensor interfaces, HVAC controls, small appliance controllers, automotive body electronics (non-safety subsystems), battery-powered instruments, and consumer white goods. The combination of low-voltage LC operation, onboard ADC, and CCP makes it practical for closed-loop control tasks. The "-E" suffix indicates the extended operating temperature grade of -40C to +125C, suitable for industrial and automotive environments. When designing with this part, note that OTP memory cannot be rewritten; ensure firmware is fully validated before programming. The 20-SOIC package is hand-solderable for prototyping and supports standard PICkit and ICD programmer/debugger interfaces. This page synthesizes distributor availability, parameter cross-checks, and same-package replacement guidance not always collected in the manufacturer datasheet.

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PIC16LC771-I/P - 8-Bit 20MHz 7KB OTP MCU | Microchip 20-PDIP
PIC16LC771-I/P

PIC16LC771-I/P - 8-Bit 20MHz 7KB OTP MCU | Microchip 20-PDIP

The Microchip Technology PIC16LC771-I/P is an 8-bit PIC microcontroller built on the PIC16C architecture family, operating up to 20 MHz with 7 KB (4K x 14) of one-time-programmable (OTP) program memory and 256 bytes of RAM, housed in a 20-pin PDIP (0.300 inch, 7.62 mm) through-hole package. The "LC" prefix denotes a low-voltage CMOS variant supporting 2.5V to 5.5V operation, making it suitable for both 3.3V and 5V rails, while the "I" suffix specifies the industrial temperature grade of -40C to +85C. According to the Microchip PIC16LC771 datasheet (DS30264D family reference), this device integrates a 12-bit ADC with up to 12 channels, capture/compare/PWM modules, an 8-bit parallel slave port, and a USART, giving it the mixed-signal peripheral set required for sensor conditioning and motor control. An 8-bit PIC microcontroller is a RISC-based embedded controller using a Harvard architecture with separate program and data buses. The PIC16C/LC family is the OTP-only predecessor to the flash-based PIC16F line, and within the broader taxonomy it sits as: microcontroller -> 8-bit microcontroller -> PIC16 family -> PIC16C/LC subfamily. These OTP parts are favored for cost-sensitive volume production where firmware is fixed and field reprogrammability is not required, whereas F-series flash parts are chosen when in-application updates are needed. Key features include 16 I/O pins, two 8-bit timer/counters with one 16-bit timer/counter, a watchdog timer, an MSSP (SPI/I2C) peripheral, and brown-out reset. The 12-bit ADC delivers 12-channel analog-to-digital conversion at the full 20 MHz instruction rate, and the parallel slave port allows direct 8-bit bus attachment to an external processor. Industrial temperature operation (-40C to +85C) and a 20 MHz maximum clock make this device well-suited to factory automation, instrumentation, and white-goods control rather than extreme-environment automotive or military use. Typical applications span industrial sensor interfaces, low-cost motor drives, HVAC thermostat controllers, and consumer appliance control boards where the OTP memory cost advantage outweighs flash flexibility. When designing with this part, note that OTP memory cannot be erased or rewritten, so firmware must be locked before committing to production runs, and programmers must use a 14-bit instruction-compatible toolchain (PICkit, ICD, or third-party programmers supporting the PIC16C/LC family).

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PIC16LC771-I/SO - 8-Bit MCU, 7KB OTP, 20MHz, SOIC-20 | Microchip
PIC16LC771-I/SO

PIC16LC771-I/SO - 8-Bit MCU, 7KB OTP, 20MHz, SOIC-20 | Microchip

The Microchip Technology PIC16LC771-I/SO is an 8-bit PIC16-family microcontroller (MCU) featuring a RISC core, 7 KB of one-time-programmable (OTP) program memory, 256 bytes of RAM, and 16 digital I/O pins in a 20-pin SOIC wide-body package. It operates at up to 20 MHz instruction cycle, runs from a 2.5 V to 5.5 V supply (3.3 V / 5 V typical), and is qualified for the industrial -40 °C to +85 °C temperature range. The 'LC' suffix indicates the low-voltage CMOS variant optimized for 3.3 V rails while remaining 5 V-tolerant. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable I/O peripherals onto one die. Within the broader power IC / power management hierarchy, an MCU like the PIC16LC771 sits alongside voltage regulators and supervisors as part of an embedded system. The PIC16 line uses a Harvard-architecture RISC core with a small, deterministic instruction set, which simplifies firmware development and yields predictable interrupt latency for real-time control tasks. Key features of the PIC16LC771 include 7 KB (4K x 14) of OTP program memory for permanent firmware storage, 256 bytes of data RAM for variable storage, integrated ADC, PWM, USART, and timers, 16 general-purpose I/O pins, and an integrated analog comparator. The device supports in-circuit serial programming (ICSP) through two dedicated pins, allowing firmware to be loaded after PCB assembly. Its low-power CMOS design enables nanoWatt-style sleep modes suitable for battery-powered products. Architecturally, the PIC16LC771 uses Microchip's mid-range 14-bit instruction RISC core with a hardware stack and interrupt controller, supported by a small instruction cache and direct register-mapped peripherals. This design delivers strong deterministic real-time performance for control loops, sensor sampling, and human-interface applications at modest clock rates. Typical applications include industrial sensor conditioning, low-power consumer products, battery management controllers, automotive body and accessory modules, and white-goods / appliance control panels. The wide-body SOIC footprint and dual supply range also make it convenient as a 3.3 V or 5 V system controller for mixed-voltage designs. When designing with this part, verify that OTP memory is appropriate for the production volume; for high-volume runs, prefer the flash-based PIC16F877A / PIC16F887 family which is pin-to-pin compatible with this SOIC-20 footprint. Always place 0.1 µF decoupling close to VDD and use the ICSP header for in-circuit firmware updates during development.

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PIC16LC771/P - 8-bit MCU 7KB OTP 256B RAM 16 I/O 20-DIP | Microchip
PIC16LC771/P

PIC16LC771/P - 8-bit MCU 7KB OTP 256B RAM 16 I/O 20-DIP | Microchip

The Microchip PIC16LC771/P is an 18/20-pin, 8-bit CMOS RISC microcontroller from the PIC® 16C-series family, housed in a 20-pin PDIP (0.300 inch, 7.62 mm) through-hole package. It integrates 7 KB of OTP program memory (4096 x 14), 256 bytes of RAM, and 16 I/O pins with a maximum clock frequency of 20 MHz at 5 V. The 'LC' suffix designates the low-power CMOS variant optimized for battery-powered and portable applications. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus, integrating a CPU, memory, and peripherals. Within the semiconductor hierarchy, MCUs belong to microcontrollers -> embedded processors -> integrated circuits -> semiconductors. RISC-based 8-bit MCUs like the PIC16 family execute one instruction per clock (except branches) and dominate cost-sensitive, low-power, and deterministic control applications where 32-bit performance is not required. Key features of the PIC16LC771/P include an integrated 10/12-bit Analog-to-Digital Converter (ADC) with up to 8 input channels, a 16-bit capture/compare/PWM module, two 8-bit timers plus one 16-bit timer, a watchdog timer with on-chip RC oscillator for code/data protection, an MSSP (Master Synchronous Serial Port) supporting SPI and I2C, and a USART for asynchronous serial communication. The architecture features Harvard separation between program and data memory plus a 14-bit instruction word, which delivers predictable instruction timing for real-time control loops. The 'LC' low-power process node allows operation across a 2.5 V to 5.5 V supply range with multiple low-power sleep modes (doze and idle) and typical active currents around 1-2 mA at 4 MHz, making the device well suited for power-constrained embedded designs. The ADC's 10/12-bit resolution and integrated references reduce external component count, while the 20 MHz clock enables sufficient MIPS for protocol stacks and PID-style control loops. Typical applications include industrial process control and sensor conditioning, automotive body electronics and HVAC controls, portable battery-powered instrumentation, consumer appliances such as washing machines and dishwashers, and general-purpose embedded control requiring on-chip ADC and serial communication. The wide 2.5-5.5 V range simplifies integration into both 3.3 V and 5 V systems. Designers should verify that the OTP memory footprint of their application code fits within the 7 KB program space, and consider migrating to PIC16F1x flash variants for in-field reprogrammability. The 20-pin PDIP package supports breadboard prototyping and hand-soldered assembly, which is a key advantage for low-volume and educational designs. This page synthesizes verified distributor pricing, drop-in same-package alternative MPNs, and practical design notes not found in the bare datasheet, giving engineers a one-stop view for selection and procurement.

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