Microcontroladores

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PIC16C77T-20I/L - 8-Bit 20MHz 14KB OTP MCU 44-PLCC | Microchip
PIC16C77T-20I/L

PIC16C77T-20I/L - 8-Bit 20MHz 14KB OTP MCU 44-PLCC | Microchip

The Microchip Technology PIC16C77T-20I/L is an 8-bit CMOS RISC microcontroller from the PIC16C7X mid-range family, operating at 20 MHz with 14 KB (8K x 14) of One-Time Programmable (OTP) program memory and 368 bytes of RAM, housed in a 44-pin PLCC (Plastic Leaded Chip Carrier) package with tape-and-reel packaging. An OTP microcontroller is a flash-like non-volatile memory device that can be programmed exactly once after manufacture; unlike UV-erasable EPROM, the windowed CERDIP variant, OTP cannot be erased and re-programmed, which lowers per-unit cost for high-volume production while still providing deterministic in-system program retention. The PIC16C77T-20I/L sits inside the broader PIC16CXX mid-range family (PIC16CXX -> PIC16 mid-range -> 8-bit MCU -> microcontroller -> embedded IC), positioning it as a legacy industrial-grade controller for cost-sensitive embedded designs. Key features include 33 digital I/O lines, an integrated 8-channel 8-bit A/D converter, and three serial communication peripherals: I2C (Inter-Integrated Circuit, also known as IIC), SPI (Serial Peripheral Interface), and UART/USART (Universal Asynchronous/Synchronous Receiver-Transmitter). Two 8-bit timers and one 16-bit timer/counter support PWM generation and event timing, while 256 bytes of EEPROM data memory retain configuration and calibration values across power cycles. The device runs from a 4.0 V to 5.5 V single supply and is specified across the -40C to +85C industrial temperature range (I suffix). Architecturally, the PIC16C77T-20I/L uses a Harvard architecture with separate program and data buses, a single accumulator (W register) working model, and a 14-bit instruction word optimized for compact code density. Its 20 MHz oscillator delivers a 200 ns instruction cycle, and the integrated A/D converter uses successive-approximation conversion with analog input multiplexing across eight channels, suitable for slow-changing sensor signals. Typical applications include industrial process control, motor drive interface logic, instrumentation data acquisition, automotive body electronics (non-safety), HVAC control boards, and consumer appliance controllers. Its combination of OTP memory, broad peripheral set, and industrial temperature range makes it well-suited for high-volume embedded products where code stability is required over the product lifecycle. A primary design consideration with this device is the OTP memory - firmware must be fully verified before programming, because no field re-programmability is possible. Engineers targeting in-field firmware updates should select a Flash-based PIC16F7X equivalent (such as PIC16F877A-I/L) with the same 44-pin PLCC footprint. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical engineering guidance not consolidated on any single distributor or manufacturer page, providing a one-stop engineering reference for the PIC16C77T-20I/L.

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PIC16C77T-20I/PQ - 14KB OTP 8-bit MCU, 20MHz | Microchip
PIC16C77T-20I/PQ

PIC16C77T-20I/PQ - 14KB OTP 8-bit MCU, 20MHz | Microchip

The Microchip PIC16C77T-20I/PQ is an 8-bit CMOS RISC microcontroller from the PIC16C7X family, featuring 14KB (8K x 14) of One-Time Programmable (OTP) program memory, 368 bytes of RAM, and a 20 MHz maximum operating frequency, housed in a 44-pin MQFP (PQ) windowed CERDIP-compatible tape-and-reel package. It integrates an on-chip 8-channel 8-bit Analog-to-Digital Converter and supports supply voltages from 4.0V to 5.5V across an industrial temperature range of -40C to +85C. A microcontroller (MCU) is a single-chip computer containing a CPU, memory (program + data), and programmable I/O peripherals. The PIC16C7X family belongs to Microchip's mid-range PIC architecture, sitting between the baseline PIC16C5X and the enhanced PIC16C9X/PIC17C families. This 8-bit RISC core executes most instructions in a single cycle, providing deterministic timing that is critical for real-time control loops, while the 14-bit instruction word balances code density against register width for embedded control workloads. Key features include Harvard architecture with separate program and data buses, 33 digital I/O pins, three timer/counter modules, two Capture/Compare/PWM (CCP) peripherals, a USART with addressable RS-485 mode, and the previously mentioned 8-bit ADC. The 'I' suffix denotes the industrial temperature grade, while '20' indicates the 20 MHz speed option and 'T' denotes tape-and-reel packaging; the /PQ package code corresponds to a 44-pin Metric Quad Flat Pack (MQFP) windowed body. The OTP EPROM program memory supports prototyping and low-volume production, while 368 bytes of data RAM and 256 bytes of EEPROM (typical for this family) provide working storage for variables and non-volatile parameters. The integrated ADC and rich peripheral set allow the PIC16C77T-20I/PQ to replace multiple discrete components in a system. Typical applications include industrial process control, motor control front-ends, instrumentation, automotive sensor interface modules, and embedded control boards where an integrated ADC reduces BOM cost. The wide operating voltage and industrial temperature grade also suit factory automation nodes. Designers should plan for in-circuit serial programming (ICSP) and reserve a quartz crystal or resonator footprint for clock stability, since timing accuracy drives both UART baud-rate integrity and ADC conversion precision. Note that 'PQ' denotes MQFP windowed ceramic packaging, which is unusual for industrial runs; verify your assembly process supports this package before scaling production. This page synthesizes distributor pricing, drop-in same-package alternatives, and design guidance that goes beyond the manufacturer datasheet to help engineers select and second-source the PIC16C77T-20I/PQ.

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PIC16C77T-20I/PT - 8-Bit 20MHz OTP MCU 14KB Flash 44-TQFP | Microchip
PIC16C77T-20I/PT

PIC16C77T-20I/PT - 8-Bit 20MHz OTP MCU 14KB Flash 44-TQFP | Microchip

The Microchip Technology PIC16C77T-20I/PT is an 8-bit RISC microcontroller from the PIC® 16C family, operating at up to 20MHz with 14KB (8K x 14) of One-Time Programmable (OTP) program memory, 368 bytes of RAM, and 33 digital I/O pins, housed in a 44-pin TQFP (10x10 mm) surface-mount package. The "T" suffix indicates Tape & Reel packaging, the "20" denotes the 20MHz maximum clock speed, "I" indicates the industrial -40C to +85C temperature grade, and "/PT" identifies the TQFP package. A PIC microcontroller is a Harvard-architecture RISC device from Microchip's PIC family, widely used as embedded controllers in industrial, automotive, and consumer products. PIC16C-series devices belong to the mid-range PIC family that bridges 8-bit simplicity with rich peripheral integration, making them suitable for applications requiring ADC, PWM, USART, and I/O control without the cost of a 16-bit MCU. The OTP variant (C-series) is programmed once during production and is ideal for high-volume mature products. Key features include 8-level hardware stack, 14-bit wide instruction word, 35 instructions, 200ns instruction cycle at 20MHz, integrated 8-channel 8-bit ADC, two 8-bit timers plus one 16-bit timer, synchronous/asynchronous USART with 9-bit address detect, capture/compare/PWM module, and Brown-out Reset (BOR). The 44-TQFP package supports surface-mount assembly with standard 0.80mm lead pitch and exposes 33 general-purpose I/O plus dedicated oscillator, MCLR, and power pins. Typical applications include industrial automation control, motor control, sensor interfacing, automotive body electronics, HVAC systems, security panels, and white-goods consumer appliances. The OTP memory makes it best suited for mature, high-volume designs where firmware is finalized and firmware updates are not expected in the field; for in-field updateable applications, the Flash-based PIC16F77 (pin-compatible migration path) is preferred. When designing with this part, ensure decoupling capacitors (0.1uF ceramic) are placed close to VDD/AVDD/VSS pins and that the MCLR pin is pulled high through a resistor for normal operation. The PIC16C77 is a legacy OTP part - confirm supply-chain availability before starting new designs; the Flash-based PIC16F877 is the recommended modern alternative for new product development.

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PIC16C781-I/SO - 8-bit MCU 1.75KB OTP 20MHz 20-SOIC | Microchip
PIC16C781-I/SO

PIC16C781-I/SO - 8-bit MCU 1.75KB OTP 20MHz 20-SOIC | Microchip

The Microchip Technology PIC16C781-I/SO is an 8-bit CMOS PICmicro® microcontroller with 1.75 KB (1K x 14) One-Time-Programmable (OTP) program memory, 128 bytes of RAM, and 16 digital I/O lines, housed in a 20-pin SOIC (0.295 inch / 7.50 mm body width) package. It operates from a 5V supply (2.0 V to 5.5 V extended range per the datasheet) at up to 20 MHz instruction-clock speed, integrating an 8-bit A/D converter, an 8-bit D/A converter, an operational amplifier, dual analog comparators, and Microchip's Programmable Switch-Mode Controller (PSMC) peripheral on-chip. An OTP microcontroller is a microcontroller whose program memory is written once (by the user or factory) and is non-erasable. OTP devices sit between the development-friendly Flash MCUs and the higher-cost, factory-masked ROM MCUs in Microchip's product hierarchy, making them attractive for low-to-medium volume production where the cost-per-unit advantage over Flash is significant but full ROM mask NRE is not justified. The PIC16C781 is a member of Microchip's PIC16 mid-range 8-bit core family and uses a 14-bit instruction word. Key on-chip features include 1.75 KB OTP program memory, 128 bytes of data RAM, 16 digital I/O pins with individual direction control, an 8-channel 8-bit A/D converter, an 8-bit D/A output, a single on-chip op-amp, two analog comparators, a PSMC (Programmable Switch-Mode Controller) module for direct power-supply regulation, an 8-bit timer/counter (TMR0), a 16-bit timer/counter (TMR1), and a Watchdog Timer with its own on-chip RC oscillator for maximum reliability. The PSMC makes the PIC16C781 particularly distinctive: it allows the MCU to directly implement closed-loop control of switching power supplies without an external PWM controller IC. Typical applications include SMPS (switch-mode power supply) primary-side control, battery chargers, LED drivers, fan/motor speed controllers, and any 5V system that needs on-board analog signal conditioning plus 8-bit digital control. The integrated op-amp and comparators let the designer build current-sense amplifiers and feedback loops around the core without external analog ICs. When designing with this part, note that OTP memory cannot be reprogrammed in-circuit; firmware must be programmed before or during board assembly using a Microchip device programmer. The PSMC peripheral requires careful PWM dead-time and frequency programming to avoid shoot-through in the external FET bridge. Industrial-temperature range is denoted by the "I" suffix.

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PIC16C781/JW - 8-Bit 20MHz MCU, 1.75KB EPROM, 20-CDIP Windowed | Microchip
PIC16C781/JW

PIC16C781/JW - 8-Bit 20MHz MCU, 1.75KB EPROM, 20-CDIP Windowed | Microchip

The Microchip Technology PIC16C781/JW is an 8-bit PIC16C-series microcontroller built around the company's enhanced mid-range RISC core, running at up to 20 MHz and integrating up to 1.75 KB (1K x 14) of One-Time-Programmable (OTP) EPROM program memory in the JW windowed ceramic CDIP variant. The device delivers 13 digital I/O pins, 128 bytes of RAM, and the highest level of mixed-signal analog peripheral integration ever offered in a 20-pin PIC16C part. According to the Microchip PIC16C781 datasheet, six fully-integrated analog modules are multiplexed onto the part, including a 12-bit (8+4) slope ADC, an 8-bit DAC, two analog comparators with programmable reference, a bandgap voltage reference, a zero-cross detect, and an integrated voltage regulator that supports operation from 2.5 V to 5.5 V without external regulation. Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, I/O peripherals, and often analog blocks onto one silicon die. The PIC16C mid-range family is the classic Microchip architecture that uses a Harvard memory layout, a small RISC instruction set with fixed 14-bit instruction width, and a 35-instruction opcode table. The /JW suffix specifically designates a UV-erasable windowed ceramic CDIP package used for prototype development and code iteration, whereas production units ship in OTP plastic packages (/P, /SO, /SS). Key features include 14-bit wide instructions, 8-level deep hardware stack, internal oscillator support, watchdog timer with on-chip RC oscillator, in-circuit serial programming (ICSP), and Brown-out Reset. The PIC16C781 is engineered for analog-intensive embedded control, replacing multi-chip op-amp and ADC front-ends with a single MCU. The architecture pairs a 20 MHz oscillator with a four-clock-per-instruction cycle, delivering up to 5 MIPS sustained throughput. The 12-bit slope ADC achieves up to 50 ksps by digitising via a 1-bit comparator against a programmable ramp, eliminating the need for a dedicated SAR core. Its 8-bit DAC, two comparators, and 2.048 V bandgap reference can be combined to build fully software-defined closed-loop systems. Typical applications include industrial process control loops, sensor signal conditioning, battery chargers with constant-current/constant-voltage profiles, mixed-signal instrumentation front-ends, automotive body controllers (non-AEC-Q), and consumer appliance user interfaces. The integrated analog set makes the PIC16C781 especially attractive where a low-cost MCU must replace several discrete analog ICs. When designing, ensure VDD decoupling uses a 0.1 uF ceramic placed within 5 mm of the supply pin and that MCLR is pulled high through 10 kohm for normal operation. The /JW windowed package allows approximately 1000 EPROM erase cycles under UV exposure, after which data retention degrades. This page synthesises distributor pricing, package-level drop-in equivalents within the same Microchip PIC16C family, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C781T-I/SO - 8-bit MCU 1.75KB OTP, 16 I/O, SOIC-20 | Microchip
PIC16C781T-I/SO

PIC16C781T-I/SO - 8-bit MCU 1.75KB OTP, 16 I/O, SOIC-20 | Microchip

The Microchip Technology PIC16C781T-I/SO is an 8-bit CMOS microcontroller built on the PIC16 mid-range RISC core with 1.75KB of one-time-programmable (OTP) program memory, 128 bytes of RAM, and 16 digital I/O lines, housed in a 20-pin SOIC (SO) package supplied on tape-and-reel. Operating from a 5V supply, the PIC16C781 is a derivative of the PIC16C7xx family and is differentiated by an unusually rich analog peripheral set for its era: an A/D converter, a D/A converter, an operational amplifier, two analog comparators, and a Programmable Switch-Mode Controller (PSMC) peripheral — a combination that previously required several discrete analog ICs around a conventional PIC. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and peripheral interfaces on one die. The PIC16C781 belongs to the 8-bit mid-range PIC16 family, which sits between Microchip's baseline 8-bit cores and the enhanced 16-bit cores in Microchip's product hierarchy. Within power management and signal conditioning systems, the on-chip op-amp, DAC, and PSMC allow this MCU to implement closed-loop control of a switching supply, charge pump, or sensor excitation circuit without external analog components, which reduces board area and BOM cost. Key features of the PIC16C781T-I/SO include 1.75KB of OTP program memory, 128 bytes of data RAM, 16 bidirectional I/O pins, an 8-bit ADC, an 8-bit DAC, an on-chip op-amp, two analog comparators, a Programmable Switch-Mode Controller (PSMC), and a synchronous serial port supporting both SPI and I2C modes. The 20-pin SOIC package is industry-standard, and the -I temperature grade supports industrial ambient operation from -40C to +85C, suitable for factory-floor equipment, instrumentation, and ruggedized embedded modules. The PIC16C781's architecture uses a Harvard layout with a separate instruction and data bus, and its RISC instruction set is fixed at 35 single-word instructions, allowing most instructions to execute in a single instruction cycle. The on-chip PSMC is the architecturally novel peripheral: it can be configured as a current-mode or voltage-mode PWM controller with programmable dead-time and frequency, and it interfaces to the on-chip op-amp and comparators so that current/voltage feedback loops can be closed entirely inside the silicon. This makes the part attractive for switching power supplies, motor drivers, and LED drivers where an external PWM controller would otherwise be required. Typical applications include SMPS (switched-mode power supply) primary-side control, LED driver controllers with analog dimming, sensor signal conditioning with on-chip amplification, battery charger control loops, motor speed control, and industrial instrumentation front ends. Because the program memory is OTP rather than flash, the PIC16C781T-I/SO is generally used in mature, high-volume production designs where code is finalized and field reprogramming is not required. When designing with this part, note that OTP memory requires one-time programming in production — engineering development should use the PIC16F877 or PIC16F1936 flash equivalent, then transition to the OTP die for cost-down. Decoupling the VDD/VSS pins with 100 nF ceramics placed within 5 mm of each pin is critical, and the analog supply (AVDD/AVSS) should be filtered with a ferrite bead to preserve ADC and DAC linearity. This page synthesizes distributor pricing as of 2026-09-19, drop-in alternatives from the same PIC16 family, and practical design notes not consolidated in the manufacturer datasheet itself.

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PIC16C781T-I/SS - 8-bit MCU 1.75KB OTP 20MHz SSOP-20 | Microchip
PIC16C781T-I/SS

PIC16C781T-I/SS - 8-bit MCU 1.75KB OTP 20MHz SSOP-20 | Microchip

The Microchip PIC16C781T-I/SS is an 8-bit CMOS OTP-based microcontroller in a 20-pin SSOP (Shrink Small Outline Package) that integrates an unusually rich set of analog peripherals for its class. According to the manufacturer datasheet, it delivers 20 MHz instruction execution (200 ns instruction cycle), 1.75 KB (1K x 14) of OTP program memory, 128 bytes of RAM, and 16 digital I/O pins, all in a compact 20-SSOP surface-mount footprint. The -I/SS suffix indicates the industrial temperature grade (-40C to +85C) and SSOP-20 package, while the "T" denotes tape-and-reel packaging. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/OTP/Flash), data RAM, and peripheral interfaces on one silicon die. PIC microcontrollers use a RISC architecture and a Harvard memory layout, which separates program and data buses for predictable instruction timing - making them widely used in embedded control applications such as sensor signal conditioning, motor control, and human-interface products. The PIC16C781 belongs to Microchip's mid-range PIC16 family, which sits between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 in terms of instruction set and peripheral set. The device's defining feature is its analog integration: an 8-channel 8-bit A/D converter, an 8-bit D/A converter, two on-chip op-amps, two comparators, and a Programmable Switched Mode Controller (PSMC) for SMPS support. According to Microchip product documentation, this combination allows engineers to build complete analog signal-chain functions - signal amplification, level detection, reference generation, and closed-loop control - around a single MCU without external analog ICs. The PIC16C781T-I/SS executes instructions at 20 MHz with a 200 ns cycle time, supports in-circuit serial programming (ICSP) via two pins, and offers selectable oscillator modes including internal RC and external crystal. Its 16 I/O pins are 5V-tolerant, with individual direction control and weak pull-up capability. Power-saving features include a SLEEP mode and a watchdog timer with its own on-chip RC oscillator for reliable operation in noisy environments. Typical applications include sensor signal conditioning, switched-mode power supply (SMPS) control via the integrated PSMC, closed-loop PID control using the on-chip op-amps and comparators, automotive sensor interfaces, and industrial instrumentation. The OTP program memory suits low-to-medium volume production where mask-ROM volumes are not justified. When designing with this part, ensure the ICSP pins (RB6/RB7) are accessible on the PCB for in-system programming and debug. Decouple VDD/VSS with a 100 nF ceramic capacitor placed as close to the pins as possible, and reserve the MCLR pin for the standard reset pull-up network. The PSMC peripheral requires careful MOSFET gate-drive layout to avoid injecting switching noise into the analog op-amp inputs. This page synthesizes distributor pricing, drop-in same-family alternatives, comparison data, and practical design notes not found in the manufacturer datasheet alone, providing an engineer-ready reference for selecting the PIC16C781T-I/SS in mixed-signal embedded designs.

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PIC16C782/JW - 8-Bit MCU, 20MHz, 3.5KB EPROM, A/D, D/A, OPAMP | Microchip
PIC16C782/JW

PIC16C782/JW - 8-Bit MCU, 20MHz, 3.5KB EPROM, A/D, D/A, OPAMP | Microchip

The Microchip PIC16C782/JW is an 8-bit CMOS OTP-based microcontroller in a 20-pin windowed CDIP package, featuring 3.5KB (2K x 14) of UV-erasable EPROM program memory, 128 bytes of RAM, and a 20MHz maximum operating frequency. It integrates six mixed-signal analog peripherals including an 8-bit A/D converter, an 8-bit D/A converter, an operational amplifier, comparators, and a Power Supply Management Controller (PSMC), giving it the highest level of analog integration of any PICmicro device at its introduction. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals on a single die. An 8-bit MCU such as the PIC16C782 processes data 8 bits at a time, occupying the small-footprint, low-power end of the microcontroller taxonomy (8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor). The PIC16C782 belongs to the PIC16C family of RISC microcontrollers with only 35 single-word instructions, 200ns instruction execution time at 20MHz, and upward compatibility with the PIC16C5X and PIC12CXXX device families. Key specifications include 13 I/O pins, a 5V typical operating voltage (operating range of approximately 2.5V to 5.5V per PIC16C family norms), internal oscillator support, and a windowed ceramic CDIP package that allows UV erasure for development and prototyping cycles. The integrated operational amplifier eliminates the need for an external analog front-end in many signal-conditioning applications, while the on-chip D/A converter provides analog set-point generation without external components. Architecturally, the PIC16C782 uses Microchip's classic Harvard RISC core with separate program and data buses, a hardware multiplier-free instruction set, and an integrated mixed-signal analog block. The PSMC block enables direct switching converter control loops without additional glue logic, which was a differentiating feature when the part was introduced and remains useful in modern retrofits of legacy designs. Typical applications include power supply supervisory and SMPS control, closed-loop analog signal conditioning, sensor interface and conditioning, programmable analog set-point generation, industrial process controllers, and embedded control with mixed-signal I/O. The integrated op-amp, DAC, and PSMC blocks let a single PIC16C782 replace what previously required an MCU plus several analog ICs. When designing with this device, note that the /JW suffix indicates a UV-erasable windowed package intended for development; for production use the OTP /P or /SO variants are recommended. Programming voltage (typically 13V on MCLR/VPP) and oscillator configuration must follow the datasheet, and the integrated analog peripherals each have dedicated configuration registers. This page synthesizes distributor pricing, exact same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16C782T-I/SS - 8-Bit MCU 3.5KB EPROM, ADC/DAC/OpAmp | Microchip
PIC16C782T-I/SS

PIC16C782T-I/SS - 8-Bit MCU 3.5KB EPROM, ADC/DAC/OpAmp | Microchip

The Microchip Technology PIC16C782T-I/SS is an 8-bit CMOS OTP-based microcontroller with 3.5KB EPROM, 128 bytes RAM, 16 I/O lines, and a 200 ns instruction execution time, packaged in a 20-pin SSOP. It runs at up to 20 MHz from a 2.5V to 5.5V supply, integrating on-chip peripherals including a multi-channel 8-bit ADC, an 8-bit DAC, an operational amplifier, dual comparators, and a Programmable Switch Mode Controller (PSMC). What is an 8-bit microcontroller with integrated analog? An 8-bit MCU combines a CPU, program memory, RAM, and digital I/O on a single die. Mixed-signal 8-bit MCUs add analog building blocks (ADC, DAC, op-amp, comparators) so that the chip can directly interface with sensors, drive analog signals, and close analog feedback loops without external analog ICs. The PIC16C782 belongs to the power management IC category of mixed-signal PIC microcontrollers, sitting below PIC18 and dsPIC families in Microchip's 8-bit MCU hierarchy. Key features of the PIC16C782T-I/SS include 35 single-word instructions, PIC16C5X/PIC12CXXX upwards compatibility, an integrated op-amp that can be configured as a gain stage or comparator front-end, a PSMC block for switch-mode power conversion, dual analog comparators with programmable reference, and 16 digital I/O pins. The device supports in-circuit serial programming and operates over the industrial -40C to +85C temperature range. The architecture is built on a RISC-based PIC core with a Harvard-style bus, allowing simultaneous instruction fetch and data access. The PSMC peripheral can generate PWM outputs with programmable frequency and duty cycle, dead-band control, and current-sense input, enabling closed-loop control of buck, boost, and flyback converters without an external PWM controller. Typical applications include AC/DC and DC/DC switch-mode power supplies, battery chargers, LED drivers with analog dimming, sensor signal conditioning, and small motor control loops. The integrated analog peripherals reduce BOM count and PCB area in cost-sensitive industrial and consumer designs. When designing with this device, evaluate OTP vs Flash trade-offs carefully - the 'C' PIC16 family uses one-time-programmable memory and is intended for mature high-volume production. For prototypes or low-volume runs, consider the Flash-based PIC16F equivalent family.

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PIC16C923-04/PT - 8-bit OTP MCU, 7KB EPROM, LCD Driver, TQFP-64
PIC16C923-04/PT

PIC16C923-04/PT - 8-bit OTP MCU, 7KB EPROM, LCD Driver, TQFP-64

The Microchip Technology PIC16C923-04/PT is an 8-bit CMOS OTP-based RISC microcontroller that integrates an LCD driver module with the PIC16 family architecture, housed in a 64-pin TQFP (10x10 mm) package. Headline parameters: 7KB (4K x 14) EPROM program memory, 176 bytes SRAM, 4 MHz maximum operating frequency (200 ns instruction cycle at 4 MHz, equivalent to 500 ns instruction execution), and integrated LCD driver capable of 32 segments and 4 commons. The /PT suffix designates the TQFP-64 surface-mount package with commercial temperature grade. A PIC microcontroller is a Harvard-architecture RISC processor designed for embedded control. The PIC16C family specifically targets mid-range applications, balancing code density, peripheral integration, and ease of programming. The 'C' in PIC16C923 denotes One-Time Programmable (OTP) EPROM program memory, which is programmed once and cannot be erased, making this part suitable for low-volume production and cost-sensitive end products where firmware revision is finalized before manufacturing. Key features include 35 single-word instructions (most are single-cycle), 8-level hardware stack, on-chip integrated LCD driver module with 32-segment and 4-common capability, synchronous serial port configurable as 3-wire SPI or 2-wire I2C, 8-bit ADC (per family datasheet), and up to 25-52 I/O pins depending on package variant. The 64-pin TQFP package (TFQFP per JEDEC) provides sufficient I/O for LCD-driven human-machine interface applications. The PIC16C923 architecture uses a 14-bit instruction word with an 8-bit data path, providing compact code density. OTP EPROM programming is performed via ICSP (In-Circuit Serial Programming), eliminating pre-programming steps. The integrated LCD driver directly biases common/segment pins, eliminating external LCD controller ICs and reducing BOM cost in display products. Typical applications include industrial weighing scales with LCD readouts, medical instrumentation displays, point-of-sale terminals, home appliance control panels, automotive dashboard displays, and consumer electronics with character or segment LCDs. The integrated LCD driver particularly suits battery-powered portable products where display power efficiency is essential. Design consideration: OTP EPROM cannot be field-updated. Engineers should use windowed ceramic packages or a flash-based PIC16F equivalent for prototype development, then transition to the OTP PIC16C923 for production. The 4 MHz maximum frequency limits this part to applications where 1 MIPS processing is sufficient. This page synthesizes distributor pricing, Microchip same-family alternatives, application guidance, and practical design notes not consolidated in the manufacturer datasheet. Engineers evaluating mid-range LCD-driven embedded designs will find drop-in alternatives and concrete parametric comparisons.

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PIC16C923-04I/L - 8-bit OTP MCU, 7KB EPROM, LCD Driver | Microchip
PIC16C923-04I/L

PIC16C923-04I/L - 8-bit OTP MCU, 7KB EPROM, LCD Driver | Microchip

The Microchip Technology PIC16C923-04I/L is a CMOS OTP-based 8-bit RISC microcontroller in the PIC16C9XX family, integrating an on-chip LCD driver, 7KB EPROM program memory, 176 bytes of SRAM, and 52 I/O pins in a 68-pin PLCC (J-lead) package. The device executes instructions in a single 500 ns instruction cycle (4 MHz oscillator) and offers 35 single-word instructions for compact code density. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, I/O peripherals, and timers on one die, executing one byte (8 bits) of data per instruction. The PIC16C923-04I/L belongs to the hypernym hierarchy: microcontroller -> embedded controller -> RISC microcontroller -> OTP (One-Time Programmable) microcontroller -> CMOS 8-bit MCU. This taxonomy reflects the part's position in the broader semiconductor and embedded-system product tree. Key features include an integrated LCD driver capable of driving 32 segments and 4 commons, a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, a 14-bit instruction word with 8-level hardware stack, and an operating voltage range of 2.5 V to 6.0 V. The 68-pin PLCC package (case style L, industrial temperature grade -40C to +85C) supports designs that require a socketed, easily-programmable LCD-capable controller. The PIC16C923-04I/L is built on Microchip's enhanced PIC 16C core architecture, featuring Harvard-style separate program and data buses for deterministic single-cycle execution. The integrated LCD module supports static, 1/2, 1/3, and 1/4 duty cycles with multiple bias modes, eliminating the need for an external LCD driver and reducing BOM cost in glass-display products. Typical applications include consumer electronics with LCD displays (microwave ovens, washing machines, thermostats), industrial control panels, instrumentation with segment displays, and any cost-sensitive human-machine interface that benefits from on-chip LCD bias generation. The OTP program memory is ideal for mature, low-cost, high-volume production runs where field firmware updates are not required. When designing with this device, note that OTP memory cannot be electrically erased - prototype code on a windowed (JW) variant for development, then move to the L (PLCC) package for production. The 500 ns instruction cycle supports instruction execution at up to 4 MHz; for higher speed requirements consider PIC16C925 (8 MHz) or PIC16C924 family members with more RAM.

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PIC16C923-04I/PT - 8-Bit OTP MCU 7KB 4MHz 64-TQFP | Microchip
PIC16C923-04I/PT

PIC16C923-04I/PT - 8-Bit OTP MCU 7KB 4MHz 64-TQFP | Microchip

The Microchip Technology PIC16C923-04I/PT is a CMOS OTP-based 8-bit microcontroller in the PIC16C family, delivering 4 MHz CPU speed (200 ns minimum instruction cycle), 7 KB (4K x 14) of EPROM program memory, 176 bytes of SRAM, and 25 general-purpose I/O pins in a 64-pin TQFP (10x10 mm) package with industrial temperature grade (-40C to +85C). The part integrates an on-chip LCD driver capable of driving up to 32 segments and 4 commons, an 8-bit A/D converter with up to 5 channels, a synchronous serial port configurable as either SPI or I2C, a USART, and three timer/counters, making it a single-chip solution for human-interface and instrumentation designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/EPROM/Flash), working memory (RAM), and programmable I/O peripherals. The PIC16C family uses a RISC (Reduced Instruction Set Computer) Harvard architecture with only 35 single-word instructions, where every instruction except branches executes in a single instruction cycle (4 oscillator clocks). This architecture achieves high throughput per MHz and deterministic timing, which is why PIC MCUs have been adopted across industrial control, automotive subsystems, white goods, and battery-powered embedded products since the 1990s. Key features of the PIC16C923 include the integrated LCD driver that offloads segment/commons timing from the CPU, a wide 3.0 V to 6.0 V operating voltage range suited to 5 V industrial logic rails, programmable code protection, a watchdog timer with on-chip RC oscillator for reliable operation without external components, and an enhanced capture/compare/PWM (ECCP) module. OTP (One-Time-Programmable) EPROM is field-programmable but not erasable, which fits cost-sensitive production runs. Architecturally, the PIC16C923 uses an 8-bit ALU with a 14-bit instruction word, providing 4 KB of program address space (8K x 14 bits of EPROM). The peripheral set targets embedded human-machine-interface designs where a microcontroller, A/D front end, and LCD bias generation are co-located on a single die. Typical applications include industrial control panels with integrated LCD readouts, consumer appliances with segmented displays, instrumentation front ends with A/D conversion, and security/alarm keypads. The integrated LCD driver removes the need for an external segment-driver IC, reducing both BOM cost and PCB area. When designing with this device, engineers must plan code into the OTP window carefully because OTP memory cannot be re-programmed, and the 64-pin TQFP footprint requires careful PCB layout to maintain signal integrity on the LCD segment traces. A reliable programmer and verified in-circuit emulator are recommended for development. This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet summary, giving procurement and design engineers a single reference for evaluation.

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PIC16C923-08/PT - 7KB OTP 8-bit MCU w/ LCD Driver | Microchip
PIC16C923-08/PT

PIC16C923-08/PT - 7KB OTP 8-bit MCU w/ LCD Driver | Microchip

The Microchip Technology PIC16C923-08/PT is a high-performance 8-bit CMOS OTP microcontroller with an integrated LCD driver, packaged in a 64-pin TQFP (PT) surface-mount form factor. It executes a single instruction cycle in 500 ns at an 8 MHz clock, delivers 7 KB (4K x 14) of OTP program memory and 192 bytes of general-purpose SRAM organized in 8-bit-wide registers. The device belongs to the PIC16C family and operates from a 5 V supply. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and I/O peripherals on one die. The PIC16C923 sits within Microchip's mature PIC16C OTP family, a sub-family of PIC microcontrollers -> 8-bit MCUs -> microcontrollers -> integrated circuits -> semiconductors. It targets embedded applications requiring deterministic execution and a rich on-chip peripheral set without in-system reprogrammability. Key features include an integrated LCD driver capable of driving segmented displays directly, 33 digital I/O pins, an 8-bit A/D converter, a USART, a Synchronous Serial Port (SSP), and a Capture/Compare/PWM (CCP) module. The device supports 14-bit-wide instructions, 8-level deep hardware stack, and offers power-managed modes for low-power embedded designs. The PIC16C923-08/PT uses an enhanced Harvard RISC architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. The OTP program memory is factory-programmable only, distinguishing this part from flash-based PIC16F devices; it is intended for high-volume production runs rather than field re-programmability. Typical applications include industrial control panels with LCD readouts, home appliance front-panel controllers, medical instrumentation displays, automotive dashboard segments (non-safety), consumer electronics with character LCDs, and security system keypads/annunciators. The integrated LCD driver eliminates the need for an external display controller, reducing BOM cost in HMI-centric designs. When designing with this part, note that OTP memory cannot be re-programmed in-circuit - firmware must be fully validated before commitment. For prototypes or field-upgradable designs, choose the flash-based PIC16F926-I/PT or PIC16F946-I/PT from the same Microchip LCD-driver family. The 64-TQFP package requires standard surface-mount assembly with JEDEC JEDEC-MS-026-compliant land pattern.

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PIC16C923-08I/L - 8-Bit CMOS MCU with LCD Driver, 7KB OTP, 68-LCC | Microchip
PIC16C923-08I/L

PIC16C923-08I/L - 8-Bit CMOS MCU with LCD Driver, 7KB OTP, 68-LCC | Microchip

The Microchip PIC16C923-08I/L is an 8-bit CMOS OTP-based RISC microcontroller with an integrated LCD driver, packaged in a 68-pin PLCC (LCC, J-Lead) industrial-temperature (-40C to +85C) form factor. It features a 14-bit instruction word, 7KB (4K x 14) of on-chip EPROM/OTP program memory, 176 bytes of data RAM, 8 general-purpose registers, and 52 digital I/O lines. According to the Microchip product page, the device executes instructions in 500 ns at 8 MHz (8 MHz oscillator) and supports PIC16C-series core with only 35 single-word instructions, all single-cycle except program branches. A microcontroller is a single-chip computer that integrates a CPU, memory, and peripheral I/O on one die; an 8-bit MCU like the PIC16C923 is the workhorse class for industrial control, instrumentation, and appliance front-panel human-machine interfaces. The PIC16C923 sits within the Microchip PIC16C family (legacy CMOS/OTP generation) under the broader hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> RISC MCU -> CMOS OTP MCU -> PIC architecture. This categorization matters for engineers selecting for long-life-cycle industrial panels where LCD plus button input plus a few relays are the I/O mix. Key features of the PIC16C923 include a hardware LCD driver module capable of driving up to 32 segments x 4 commons (128 pixel control) without external LCD bias circuitry, an 8-bit timer/counter with optional 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator for reliable reset, a programmable code-protection bit, and In-Circuit Serial Programming (ICSP) capability. The integrated LCD controller is the headline differentiator versus general-purpose 8-bit MCUs - it saves the BOM cost of an external LCD driver chip and the firmware overhead of bit-banging segment waveforms. The PIC16C923-08I/L variant operates from 5V (4.5V to 5.5V) with an 8 MHz oscillator (suffix -08) in industrial temperature grade (suffix I). The 'L' suffix denotes the 68-lead PLCC (also called LCC or QCCJ) square J-leaded ceramic-compatible package. Because OTP memory cannot be reprogrammed, this part is intended for production volumes rather than prototyping - for development, Microchip recommends the windowed CERDIP -JW variant. Typical applications include industrial control panels with LCD readouts, HVAC thermostats, weigh scales, blood-pressure monitors and other medical front-panel displays, washing machine and appliance user interfaces, gas pumps and metering equipment, and remote-control keypads with segment displays. The integrated LCD segment driver plus abundant GPIO makes the part a strong fit when the BOM must stay under a tight ceiling. When designing with PIC16C923, plan the OTP programming step into your manufacturing flow - the parts cannot be reprogrammed in the field, so the firmware image must be locked before the chip is soldered. Also note that the 68-pin PLCC package requires a socketed or careful-reflow PCB land pattern; consider PIC16F946 or PIC16F914 in TQFP/PT packages if you need Flash-based reprogrammability and modern footprints. This page synthesizes distributor pricing, current Microchip cross-reference data, and engineering design notes for the PIC16C923-08I/L - information typically scattered across Octopart, DigiKey, and Microchip's parametric search, consolidated into a single decision-ready reference.

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PIC16C923T-04/L - 8-Bit 4MHz 7KB OTP MCU 68-PLCC | Microchip
PIC16C923T-04/L

PIC16C923T-04/L - 8-Bit 4MHz 7KB OTP MCU 68-PLCC | Microchip

The Microchip Technology PIC16C923T-04/L is an 8-bit CMOS RISC microcontroller from the PIC16C family with an integrated LCD driver, packaged in a 68-pin PLCC (J-lead, surface mount) form factor. It operates at up to 4 MHz clock frequency, delivers 7 KB of OTP (One-Time Programmable) program memory organized as 4K x 14 words, provides 176 bytes of data RAM, and exposes 52 general-purpose I/O pins. The part is supplied in tube packaging and is rated for the commercial temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces on a single die. The PIC16C architecture uses a Harvard RISC core with only 35 single-word instructions, a 14-bit instruction word, and a two-stage pipeline that allows most instructions to execute in a single 200 ns instruction cycle at 20 MHz (or 1 us at 4 MHz). PIC MCUs belong to the broader category of microcontrollers -> embedded processors -> semiconductors. Key differentiating features include the on-chip LCD driver supporting up to 160 segments, an integrated 8-bit A/D converter (where applicable in this sub-family), two 8-bit timers plus one 16-bit timer, a watchdog timer with on-chip RC oscillator, and the OTP program memory that allows one-time factory or prototype programming at low per-unit cost. The 68-pin PLCC package exposes sufficient I/O for LCD panel driving, key scanning, and communication peripherals (USART/SCI, SPI, I2C). Typical applications for the PIC16C923T-04/L include industrial control panels with character or graphic LCDs, instrument front panels, appliance user interfaces, automotive dashboard sub-systems (pre-AEC era designs), medical instrument displays, and any embedded design requiring segment-LCD driving without an external LCD controller. The wide commercial temperature range and 52 I/O pins enable direct keypad and LCD multiplexing. When designing with this part, note that the OTP memory cannot be re-programmed; for in-field firmware updates choose the PIC16F926 or PIC16F946 flash-based equivalent. Brown-out reset, power-on reset, and the watchdog timer should all be enabled in firmware for reliable industrial deployments. Decoupling capacitors (100 nF plus 10 uF) must be placed within 5 mm of VDD/VSS pins to suppress switching noise from the LCD charge pump. This page synthesizes distributor pricing (DigiKey, Mouser), drop-in package-compatible alternatives, and practical design notes not consolidated in any single manufacturer document.

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PIC16C923T-04/PT - 8-Bit 4MHz OTP MCU with LCD | Microchip
PIC16C923T-04/PT

PIC16C923T-04/PT - 8-Bit 4MHz OTP MCU with LCD | Microchip

The Microchip Technology PIC16C923T-04/PT is an 8-bit RISC microcontroller with 7KB (4K x 14) of one-time programmable (OTP) program memory, 176 bytes of SRAM, and an integrated LCD driver, packaged in a 64-pin TQFP (10x10 mm). It executes instructions at 4 MHz with a 500 ns instruction cycle, using only 35 single-word instructions, making it well-suited for compact embedded codebases with predictable timing. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable peripherals onto one IC. Within the broader taxonomy, the PIC16C923 is a member of the 8-bit PIC16 OTP family, a sub-class of microcontrollers, which themselves belong to embedded processors and ultimately to digital ICs and semiconductors. OTP variants use one-time-programmable EPROM for code storage, providing non-volatile retention at lower cost than flash, but they cannot be re-programmed. Key features of the PIC16C923T-04/PT include built-in I2C and SPI serial interfaces, an on-chip LCD driver with dedicated segment and common pins, a 10-bit PWM module, power-on reset (POR), brown-out reset (BOR), and a watchdog timer (WDT). The integrated LCD controller simplifies human-machine-interface designs by eliminating the need for an external display driver. The PIC16C923 core uses a Harvard RISC architecture with separate program and data buses, allowing instruction fetch and operand access to occur in the same cycle. The 8-level hardware stack and 8 special-function registers provide deterministic interrupt response. An 8-bit timer/counter, capture/compare, and 10-bit PWM are integrated, alongside synchronous and asynchronous serial ports. Typical applications include alphanumeric LCD display modules, industrial control panels, instrumentation with segmented displays, point-of-sale terminals, and consumer appliance interfaces. The wide temperature-grade range of the commercial -I variant and 64-pin TQFP footprint give designers flexibility for compact HMI boards. When designing with the PIC16C923T-04/PT, choose a programmer that supports OTP EPROM (not flash) and ensure the LCD bias and segment pin allocations match your display glass. Because the device is OTP, firmware revision control is critical before programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16C923T-04I/L - 8-bit OTP MCU, 7KB EPROM, LCD Driver | Microchip
PIC16C923T-04I/L

PIC16C923T-04I/L - 8-bit OTP MCU, 7KB EPROM, LCD Driver | Microchip

The Microchip Technology PIC16C923T-04I/L is an 8-bit CMOS OTP-based microcontroller with an integrated LCD driver, 7KB of one-time-programmable EPROM program memory, 176 bytes of SRAM, and 52 general-purpose I/O pins, housed in a 68-pin PLCC (J-lead) surface-mount package rated for industrial temperature operation (-40C to +85C). What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller embeds EPROM program memory that can be programmed once by the user with a device programmer and cannot be electrically erased. OTP sits in the broader taxonomy microcontroller -> embedded processor -> integrated circuit -> semiconductor, and the PIC16C923 belongs to Microchip's mid-range PIC16C family - a class of 8-bit RISC MCUs designed for low-power embedded control with peripheral integration. The 'T' suffix denotes tape-and-reel packaging, '-04I' denotes a 4 MHz maximum oscillator and industrial temperature grade, and '/L' denotes a 68-pin PLCC J-lead package. Key features include 35 single-word RISC instructions (most executed in a single 200 ns instruction cycle at 20 MHz, or 500 ns at 4 MHz), an integrated LCD driver capable of multiplexing up to 4 common and 32 segment signals (128-segment LCD support), 8-level hardware stack, 14-bit wide instruction word, 8 special-function hardware registers, and serial communication peripherals (I2C/SPI). The industrial temperature grade (-40C to +85C) and integrated LCD controller reduce BOM cost for any product requiring an alphanumeric or numeric glass display. Architecturally, the PIC16C923 uses a Harvard RISC core with separated program (14-bit) and data (8-bit) buses, a 14-bit instruction word for compact code density, and a hardware multiply-by-constant routine. The integrated LCD module includes dedicated charge-pump bias generation, programmable frame frequency, and shared segment driver lines with GPIO, allowing the same pin to drive either a logic-level load or an LCD segment based on configuration. Typical applications include white-goods front panels (washing machines, microwave ovens, thermostats), industrial control HMIs, medical instrument displays, point-of-sale terminals with numeric keypads and character LCDs, automotive dashboard segments, and any battery-powered metering device that needs a multi-digit segmented LCD readout. The industrial temperature grade extends these into outdoor metering and HVAC controls. A key design consideration is that the PIC16C923 is OTP - field firmware updates are impossible; production units cannot be re-programmed. Designers building a serviceable product should evaluate the Flash-based PIC16F946 (same pinout, same peripherals, Flash memory) as a forward-compatible alternative. Verify the integrated LCD driver segment count (typically 4x32 = 128 segments max) against your glass display before finalizing the BOM. This page synthesizes authorized-distributor pricing, drop-in alternatives, and application guidance not consolidated in the Microchip datasheet, helping procurement and engineering teams source and substitute this part accurately.

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PIC16C923T-04I/PT - 8-Bit OTP MCU with LCD Driver | Microchip
PIC16C923T-04I/PT

PIC16C923T-04I/PT - 8-Bit OTP MCU with LCD Driver | Microchip

The Microchip Technology PIC16C923T-04I/PT is an 8-bit CMOS OTP-based microcontroller with integrated LCD driver, packaged in a 64-pin TQFP (10x10 mm) and operating at 4 MHz instruction frequency. It integrates 7 KB (4K x 14) of OTP program memory, 176 bytes of RAM, 52 digital I/O pins, and an on-chip LCD driver, making it a single-chip solution for human-machine interface (HMI) subsystems. According to the Microchip PIC16C923 datasheet, the part operates from 2.0 V to 5.5 V across the industrial temperature range (-40 C to +85 C). What is an OTP microcontroller? An OTP (One-Time Programmable) microcontroller contains EPROM-based non-volatile program memory that can be written once using a device programmer. Unlike flash-based MCUs, OTP parts cannot be reprogrammed in-circuit, which makes them ideal for high-volume cost-sensitive applications where firmware is final and stable. The PIC16C923 belongs to the PIC16C family of Microchip's PIC architecture, sitting in the hierarchy: PIC16C923 -> PIC16C family -> 8-bit PIC -> PIC microcontroller -> Microcontroller IC -> semiconductor. Key features include a 4 MHz maximum clock with 500 ns instruction cycle, integrated LCD segment driver (up to 128 segments typical), two 8-bit timers plus one 16-bit timer, 10-bit ADC (depending on variant), I2C/SPI/USART communication peripherals, and a watchdog timer for reliable operation. The 64-pin TQFP package exposes 52 general-purpose I/O lines plus dedicated LCD segment pins, allowing direct drive of alphanumeric or graphic LCD glass without an external driver. Architecturally, the PIC16C923T-04I/PT uses a Harvard RISC core with only 35 single-word instructions, an 8-level hardware stack, and separate program/data buses. The 'T' suffix denotes Tape & Reel packaging, '04' denotes 4 MHz speed grade, 'I' denotes industrial temperature grade, and '/PT' denotes the 64-pin TQFP package. The integrated LCD controller supports multiple bias modes and frame frequencies, eliminating external charge-pump or segment-driver ICs in many designs. Typical applications include industrial control panels with LCD displays, point-of-sale terminals, metering and instrumentation front panels, white-goods and appliance user interfaces, and embedded operator-interface HMIs. The wide voltage range and integrated LCD driver make it particularly well-suited to mains- or battery-powered consumer appliances and industrial equipment with integrated displays. When designing with this part, ensure the OTP memory programming step is planned into manufacturing: OTP parts cannot be firmware-updated. Provide adequate decoupling (0.1 uF + 10 uF bulk) near VDD/AVDD pins, route the LCD segment lines with similar trace lengths to keep segment contrast uniform, and respect the in-circuit programming voltage requirements of the EPROM cell. The 'I' industrial temperature grade allows deployment in -40 C to +85 C environments without additional thermal qualification. This page synthesizes distributor pricing, drop-in same-package alternatives (including PIC16C923-04I/PT, PIC16C924, PIC16C925, PIC16C926 family members), and practical design notes not consolidated in a single manufacturer document.

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PIC16C923T-08/L - 8-Bit OTP MCU w/ LCD Driver, 7KB | Microchip
PIC16C923T-08/L

PIC16C923T-08/L - 8-Bit OTP MCU w/ LCD Driver, 7KB | Microchip

The Microchip Technology PIC16C923T-08/L is an 8-bit CMOS OTP-based microcontroller with an integrated LCD driver, delivering 500 ns instruction execution in a 68-pin PLCC (J-lead, T/R) package. It combines 7 KB of on-chip EPROM program memory, 192 bytes of general-purpose SRAM, and an LCD driver capable of multiplexing up to 4 commons and 32 segments (128 segments total in 1:32 mux mode), making it a single-chip solution for low-power human-machine interface designs. A microcontroller (MCU) is a single-chip computer containing a CPU, program and data memory, I/O peripherals, and often specialized interfaces such as LCD controllers, ADC, or communications. The PIC16C9xx family belongs to Microchip's PIC16 mid-range 8-bit RISC architecture, which executes one instruction per instruction cycle (4 oscillator cycles) and exposes only 35 single-word instructions. MCUs sit one level below the broader category of microprocessors in the system-on-chip hierarchy: LDO -> power management IC -> microcontroller -> embedded system -> end product. The PIC16C923 in particular is positioned at the top of the PIC16C LCD-driver family for applications that need a higher-segment LCD count without moving to the PIC17 or PIC18 architectures. Key features include a 7 KB EPROM program memory (14-bit instruction word), 192-byte SRAM data memory, 33 general-purpose I/O pins, an integrated LCD driver supporting static through 1:32 multiplex, two 8-bit timer/counters, a watchdog timer with its own on-chip RC oscillator, and a programmable brown-out reset. The device operates across 2.5 V to 6.0 V with a maximum clock of 8 MHz (8 MHz oscillator, 2 MHz instruction rate, 500 ns instruction cycle). All I/O pins are TTL/CMOS-compatible and the part uses an open-drain LCD segment architecture suitable for direct drive of standard 3 V and 5 V LCD glass. Architecturally, the PIC16C923 is built on Microchip's mid-range core with a 14-bit program word and an 8-bit data path. The EPROM-based program memory is windowed for prototype development and one-time-programmable (OTP) in production. The integrated charge-pump and bias-generator free the LCD section from external bias resistors; the designer only needs to supply a low-power LCD-compatible external capacitor network. The brown-out detector and power-on reset provide predictable startup, while the watchdog timer with a dedicated RC oscillator runs independently of the main crystal, so a stalled main clock cannot prevent system recovery. Typical applications include battery-powered thermostats and HVAC controllers, gas and water meters, point-of-sale terminals, handheld instruments with character or graphic LCDs, medical infusion pumps, white-goods user interfaces (washing machines, ovens), automotive interior controls (non-AEC-Q100 use cases), and industrial operator panels. The integrated LCD driver eliminates the need for an external LCD controller, reducing both BOM cost and PCB area. When designing with the PIC16C923, allocate the EPROM budget carefully: 7 KB allows roughly 4000 single-word instructions, which is sufficient for typical mid-range control + LCD tasks but tight for protocol stacks. Use Microchip's MPASM assembler or the MPLAB XC8 C compiler; the `-/L` package suffix denotes the 68-pin PLCC J-lead variant supplied in Tape and Reel. Always include decoupling (100 nF + 10 uF) within 10 mm of VDD/AVDD/VSS, and confirm that the LCD glass segment count does not exceed 32x4 before committing to the BOM. This page synthesizes distributor pricing, drop-in same-package alternatives (Tape & Reel variants and OTP/EPROM speed grades), and practical design notes that complement - rather than duplicate - the Microchip datasheet.

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PIC16C923T-08/PT - 8-bit CMOS MCU with LCD Driver, 8MHz, TQFP-64 | Microchip
PIC16C923T-08/PT

PIC16C923T-08/PT - 8-bit CMOS MCU with LCD Driver, 8MHz, TQFP-64 | Microchip

The Microchip Technology PIC16C923T-08/PT is an 8-bit CMOS RISC microcontroller with an integrated LCD driver module, packaged in a 64-pin TQFP (TFQFP). It operates up to 8 MHz with 500 ns instruction execution, integrates 4K x 14 words of OTP/EPROM program memory, 176 x 8 bytes of general-purpose SRAM, and offers 52 digital I/O pins for embedded applications that also require a direct glass LCD interface. The device is part of the PIC16C9XX family of mid-range microcontrollers, distinguished by an on-chip LCD driver that can directly multiplex up to a 4x32-segment display. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripherals such as timers, communication interfaces, and I/O on a single die. The PIC16C923 belongs to the hypernym hierarchy: 8-bit microcontroller -> RISC microcontroller -> CMOS microcontroller -> embedded controller -> semiconductor. Its mid-range PIC architecture with 35 single-word instructions makes assembly programming compact and predictable, while C compilers from Microchip (MPLAB XC8) target the same core for higher-level development. Key features include 4K x 14 EPROM/OTP program memory, 176 bytes of data RAM, 52 I/O pins, an integrated LCD driver supporting up to 4 common and 32 segment lines, an 8-bit timer/counter with 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator, and three I/O ports (PORTA, PORTB, PORTC, PORTD, PORTE) multiplexed with LCD segment and common signals. The part operates from 4.5 V to 6.0 V and supports commercial temperature grades. Architecturally, the PIC16C923 uses a Harvard-style 14-bit instruction word with separate program and data buses, an 8-level deep hardware stack, and direct/indirect addressing modes. The LCD module shares pins with PORTC/PORTD/PORTE, allowing the same IC to drive character or segment displays without an external LCD controller. CMOS EPROM process technology enables low power operation with all instructions executing in a single 500 ns cycle (except program branches which take two cycles). Typical applications include industrial control panels with character LCDs, white goods with integrated displays, handheld instrumentation with segment displays, point-of-sale terminals, automotive dashboard segments, and consumer appliances where the LCD driver integration eliminates an external LCD controller and reduces BOM cost. The wide 52-pin I/O count also supports keypad scanning and LED matrix driving. When designing with this part, evaluate OTP versus windowed (UV-erasable) PIC16C923JW variants carefully - the /PT suffix denotes the OTP/EPROM TQFP-64 production package, suitable for low-volume and pre-production builds; high-volume runs should consider migrating to the mask-ROM PIC16CR923 or the Flash-based PIC16F946/LC94x family for lower unit cost. The integrated LCD driver is the primary value proposition - if no display is needed, a smaller, cheaper mid-range PIC such as the PIC16F877A in PLCC-44 is more appropriate. This page synthesizes distributor pricing, drop-in compatible same-family PIC16C9xx alternatives, and practical design notes not aggregated on any single distributor page, providing an engineering decision framework for selecting the right MCU in the LCD-driven mid-range PIC segment.

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PIC16C923T-08I/L - 8-Bit OTP MCU 7KB 52 I/O 68-PLCC | Microchip
PIC16C923T-08I/L

PIC16C923T-08I/L - 8-Bit OTP MCU 7KB 52 I/O 68-PLCC | Microchip

The Microchip Technology PIC16C923T-08I/L is an 8-bit CMOS OTP-based microcontroller in the PIC16C family, offering 7KB of on-chip EPROM program memory, 176 bytes of SRAM, and 52 digital I/O pins. It executes instructions in a 500 ns single-cycle time at an 8 MHz oscillator input, packs the PIC RISC architecture into a 68-pin PLCC (Plastic Leaded Chip Carrier) with J-leads, and is qualified to the industrial temperature range (-40C to +85C). According to distributor data from DigiKey, the device ships in a 68-PLCC (24.23x24.23 mm) J-lead surface-mount package and supports only 35 single-word instructions, all of which execute in a single instruction cycle except program branches. What is a PIC16C 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral set around an 8-bit data path. The PIC16C family from Microchip uses a Harvard RISC architecture with separate program and data buses, OTP (One-Time-Programmable) EPROM for code storage, and a small register file with hardware interrupts. Within the broader IC taxonomy it sits under microcontroller -> embedded MCU -> 8-bit MCU -> semiconductor. Compared with Flash-based successors (PIC16F), PIC16C OTP devices offer lower unit cost at high volume but cannot be reprogrammed in-circuit, making them best suited for mature production where firmware is locked. Key features include 4K x 14 bits of EPROM program memory (7 KB), 176 bytes of general-purpose SRAM registers, 52 bidirectional I/O pins, an 8-bit timer/counter with 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator, and Power-on Reset / Brown-out Reset / Power-up Timer. The PIC16C923 also includes an LCD driver interface, making it one of the few PIC16C midrange parts with integrated segment-LCD support, and it operates across 2.5 V to 6.0 V VDD with low-power Sleep mode. Typical applications include industrial control panels, segment-LCD human-machine interfaces (HMIs), appliance front-panel controllers, instrumentation front-ends, and embedded automotive subsystems where firmware is fixed at production and cost is paramount. Its 52 I/O and integrated LCD drive simplify BOMs in meter and control applications by removing external LCD driver ICs. When designing with this device, note that OTP EPROM cannot be re-programmed - firmware must be 100% verified before production programming. Use the parallel programming mode for production programming, and confirm the 68-PLCC footprint supports the J-lead land pattern used in your PCB layout.

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PIC16C923T-08I/PT - 8-Bit OTP MCU w/ LCD Driver, 8MHz, TQFP-64 | Microchip
PIC16C923T-08I/PT

PIC16C923T-08I/PT - 8-Bit OTP MCU w/ LCD Driver, 8MHz, TQFP-64 | Microchip

The Microchip Technology PIC16C923T-08I/PT is an 8-bit CMOS OTP-based microcontroller with 7KB (4K x 14) of on-chip EPROM program memory, integrated LCD driver hardware, and 8 general-purpose registers (SRAM), delivered in a 64-pin TQFP (PT) package with industrial temperature grade (-40C to +85C). The '08' speed suffix denotes 8 MHz maximum oscillator frequency (200 ns instruction cycle), while the 'I' suffix denotes the industrial temperature range and 'T' denotes tape-and-reel packaging. An 8-bit OTP (One-Time-Programmable) microcontroller is a non-volatile MCU whose program memory is implemented as EPROM and can be written only once after erasure by UV light. It belongs to the broader class of microcontrollers -> embedded processors -> digital ICs. The PIC16C923 specifically targets applications requiring integrated LCD glass driving, eliminating the need for an external LCD controller and reducing both BOM cost and PCB area. Key features of the PIC16C923T-08I/PT include a powerful RISC CPU with only 35 single-word instructions to learn, 500 ns instruction execution time, all single-cycle instructions except for program branches, and 8-level hardware stack. The on-chip LCD driver supports multiplexed LCD panels up to 4 common lines, while the integrated peripherals include a 5-channel 8-bit A/D converter, USART, SSP, and capture/compare/PWM modules. The PIC16C923T-08I/PT leverages CMOS EPROM process technology, giving it low power consumption characteristic of CMOS logic combined with field-programmable (one-shot) non-volatile memory. The architecture is optimized for applications where the program code is finalized during prototyping and small-to-medium production runs - the EPROM cannot be electrically erased but is reliable in the field once programmed and windowless-packaged. Typical applications include consumer appliances (washing machines, microwave ovens, climate control panels), industrial HMI panels, instrumentation with LCD readouts, point-of-sale terminals, and any battery-powered or line-powered product requiring integrated alphanumeric or segmented LCD glass driving. The combination of LCD driver, ADC, and USART in a single chip reduces external component count. When designing with this device, note that the OTP memory cannot be re-programmed - prototypes should use the JW windowed ceramic variant for development and the PT plastic TQFP for production. Adequate decoupling (100 nF ceramic plus 10 uF bulk) near VDD/AVDD/VSS pins is required for ADC accuracy, and the LCD bias generation must use the recommended external resistor ladder per the datasheet. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, enabling faster BOM decisions.

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PIC16C924-04/L - 8-bit OTP MCU 7KB EPROM 8MHz LCD | Microchip
PIC16C924-04/L

PIC16C924-04/L - 8-bit OTP MCU 7KB EPROM 8MHz LCD | Microchip

The Microchip Technology PIC16C924-04/L is an 8-bit RISC CMOS microcontroller built around Microchip's PIC architecture, packaged in a 68-pin PLCC (J-Lead, QCCJ) form factor with OTP EPROM program memory. It integrates an integrated LCD driver capable of driving 32 segments and 4 commons, five channels of 8-bit Analog-to-Digital converters, and a synchronous serial port configurable as 3-wire SPI or 2-wire I²C, all on a single die. The core runs at up to 4 MHz instruction frequency (200 ns instruction cycle) and operates from a 4V to 6V supply. An 8-bit microcontroller (MCU) is a small computer-on-a-chip combining a CPU, RAM, non-volatile program memory, and peripherals. The PIC family, a Harvard-architecture RISC design, sits within the broader hierarchy: MCU → microcontroller → embedded processor → semiconductor. OTP EPROM-based PIC16C parts are one-time-programmable and targeted at mature, cost-sensitive embedded products where code is finalized in production. Key features include 7 KB (4K × 14) of OTP EPROM program memory, 192 bytes of SRAM data memory, 52 digital I/O lines, a 5-channel 8-bit ADC, an LCD driver with 32 segments and 4 commons, a Pulse-Width-Modulation (PWM) module, a Watchdog Timer (WDT), Power-On Reset (POR), and brown-out detection. The synchronous serial port supports both SPI and I²C master/slave modes. The instruction set is only 35 single-word instructions, all single-cycle except branch instructions. The PIC16C924-04/L uses a high-performance RISC engine with a 14-bit instruction word, an 8-level hardware stack, and direct/indirect addressing modes. The external oscillator interface supports XT, HS, and RC modes for the /04 speed grade. Power management includes POR, brown-out reset, and a Watchdog Timer with its own on-chip RC oscillator for reliable operation. Typical applications include LCD-based human-machine interfaces, appliance control panels, industrial meters, automotive instrument clusters, and embedded control boards with text/graphical displays. The integrated LCD driver eliminates the need for an external segment driver in cost-sensitive designs, while the 5-channel ADC supports sensor monitoring. When designing with this part, note that the OTP memory means firmware must be finalized before production programming - field upgrades require a windowed (JW) package variant. For prototype work, Microchip recommends the PIC16F924 Flash-based equivalent.

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PIC16C924-04/PT - 8-bit 4MHz 7KB OTP MCU w/ LCD Driver | Microchip
PIC16C924-04/PT

PIC16C924-04/PT - 8-bit 4MHz 7KB OTP MCU w/ LCD Driver | Microchip

The Microchip Technology PIC16C924-04/PT is an 8-bit CMOS RISC microcontroller with an integrated LCD driver, 7KB (4K x 14) of one-time-programmable (OTP) program memory, 176 bytes of SRAM, and 52 I/O pins, packaged in a 64-pin TQFP (10x10 mm) surface-mount form factor. The "04" speed grade runs at 4 MHz clock input (200 ns instruction cycle at 5V), with the PIC16C924 family offering 5 channels of 8-bit ADC, a synchronous serial port configurable as either SPI or I2C, and an LCD driver module capable of driving 32 segments and 4 commons (up to 128-pixel LCD panel). What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a type of embedded controller whose on-chip program memory can be written exactly once after manufacture using a programming voltage, with the bit cells constructed as anti-fuse EPROM (rather than EEPROM or Flash). In the broader taxonomy, the PIC16C924 sits below EPROM-based OTP MCUs -> 8-bit microcontrollers -> microcontrollers (MCU) -> embedded controllers -> integrated circuits (ICs). The "C" suffix indicates the original CMOS/EPROM PIC16 family introduced in the early-to-mid 1990s. Key features include 35 single-word instructions (all single-cycle except branches), an 8-level deep hardware stack, four interrupt sources, two 8-bit timer/counters with prescalers, a 16-bit timer/counter, a Watchdog Timer with its own on-chip RC oscillator, and brown-out reset / power-on reset / power-up timer supervisory functions. The synchronous serial port (SSP) supports SPI (Master/Slave) and I2C (Slave) modes, easing sensor and peripheral interconnect. The LCD module supports static, 1/2, 1/3, and 1/4 duty multiplex and can source the LCD bias voltage internally. The architecture uses a Harvard design with separate program and data buses, an ALU that operates on any working register, and a 14-bit program word width - a hallmark of the mid-range PIC16 family. Power consumption is low for the era (typical supply current 1.6 mA at 4 MHz / 5V), with the device operating across 2.5V-5.5V. At 4 MHz "04" speed grade the part delivers 5 MIPS; higher "10" and "20" speed grades deliver 10 and 20 MHz respectively but share the same die and pinout. Typical applications include appliance control panels with LCD readouts, industrial instrument front panels, automotive dashboard clusters (with appropriate EMI hardening), battery charger user interfaces, HVAC thermostat displays, and consumer electronics that need a segmented LCD without a dedicated LCD controller IC. Design consideration: OTP memory is one-time programmable - firmware must be fully validated on the F1 (UV-erasable) windowed variant PIC16C924/JW or on the PIC16C924-04/P (PDIP emulator) before committing to the /PT OTP version, otherwise no firmware revisions are possible. Carefully budget the 176-byte SRAM against stack depth and buffer use, as the modest RAM is the typical bottleneck. This page synthesizes distributor pricing, drop-in alternatives (PIC16C924T-04/PT, PIC16C924-04I/PT, PIC16F914-I/PT), and practical design notes not found in the manufacturer datasheet alone.

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