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MC68HC908QT4VPE - 8-Bit 8MHz Flash MCU | NXP | Industrial
MC68HC908QT4VPE

MC68HC908QT4VPE - 8-Bit 8MHz Flash MCU | NXP | Industrial

The NXP Semiconductors MC68HC908QT4VPE is an 8-bit M68HC08 CISC microcontroller with an 8 MHz clock, 4 KB of Flash memory, an ADC, and an 8-pin DIP package. The supplied distributor records identify an industrial-range HC08 device and conflict on one secondary record that lists 16 MHz and an LCC-52 package. For this exact MPN, DigiKey and Rochester data instead identify an 8-pin DIP MCU, so the 8 MHz value and package description below are used. What is an 8-bit MCU? A microcontroller is a semiconductor device that combines a processor core, program memory, data memory, I/O, and peripherals on one integrated circuit. The M68HC08 family uses the CPU08 enhanced core, a complex instruction set computer architecture, and Von Neumann organization. Within the hierarchy, this part is an MCU, an embedded microcontroller, an 8-bit microcontroller, and a member of NXP's M68HC08 family. Verified highlights include 4 KB (4K x 8) of Flash program memory, an 8 MHz operating frequency, an integrated ADC, and an industrial operating range. A further indexed specification lists 4.5 V to 5.5 V supply voltage and 40 I/O ports, but those values conflict with the exact MPN's eight-pin package listing and are therefore not presented as authoritative target-part specifications. Flash memory supports in-system reprogramming workflows, although programming voltage, timing, and electrical limits require confirmation from the manufacturer documentation. The CPU08 platform suits compact control tasks that need deterministic 8-bit processing, serial communication, digital control, and analog measurement without requiring a higher-cost 16- or 32-bit processor. Its small package simplifies through-hole prototypes, but package pin limitations constrain how many external functions can be connected simultaneously. Software migration should therefore be evaluated at both instruction and peripheral levels rather than inferred from the 8-bit label. Typical uses include industrial control modules, compact instrumentation, educational embedded systems, sensor interfaces, and legacy equipment support. The ADC makes the MCU useful when a board must convert analog inputs into digital control values, while Flash permits field-updatable firmware when the manufacturer's programming procedure is followed. Designers should resolve the conflicting indexed records before release. Confirm the exact ordering code, clock rating, pinout, memory map, programming model, and electrical limits in NXP documentation; do not substitute data associated with another HC08 package or variant. This page distinguishes exact-MPN distributor evidence from broader family material and flags every missing engineering value rather than inferring it.

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MC68HC908QY1CDTE - 8-bit HC08 MCU, 1.5KB Flash, 8MHz | NXP
MC68HC908QY1CDTE

MC68HC908QY1CDTE - 8-bit HC08 MCU, 1.5KB Flash, 8MHz | NXP

The NXP MC68HC908QY1CDTE is an 8-bit HC08-family microcontroller delivering 8MHz CPU performance with 1.5KB of on-chip Flash program memory and 128 bytes of RAM in a 16-pin TSSOP package. It targets cost-sensitive embedded applications that require reliable Flash-based program storage, low pin count, and a stable 5V (4.5V to 5.5V) supply rail. The part is supplied in tube packaging, is rated for the industrial operating range, and integrates peripherals such as PWM, LVD, and POR that simplify power and motor-control designs. An 8-bit microcontroller (MCU) is a small, single-chip computer built around an 8-bit data path, optimized for deterministic, low-power, cost-driven control tasks. The HC08 family uses a CISC Von Neumann architecture with the CPU08 core; it sits within the broader taxonomy of microcontrollers -> microprocessors -> semiconductor ICs. MCUs differ from microprocessors (MPU) by integrating program memory, RAM, and peripherals into a single device, eliminating external memory glue and reducing BOM cost. Key features of the MC68HC908QY1CDTE include 1.5KB Flash program memory, 128 bytes of RAM, an 8MHz bus clock, 13 programmable I/O lines, on-chip PWM channels, and built-in low-voltage detect (LVD) and power-on reset (POR) for robust 5V-only operation. The 16-pin TSSOP footprint gives designers a compact surface-mount solution that is straightforward to assemble on double-sided boards. The lack of an integrated ADC distinguishes this QY1 variant from the ADC-equipped QY2/QY4 siblings. Architecturally, the HC08 CPU08 core executes the standard M68HC08 instruction set, including bit-manipulation and multiply instructions that are useful for control loops. The Flash memory is in-system programmable, which simplifies firmware updates in the field. The peripheral set - PWM, timers, LVD, POR - is mapped onto the 13 I/O pins, giving the designer flexibility to configure each pin for digital I/O or peripheral function. Typical applications include low-cost appliance control (washing machines, microwave ovens, fans), battery chargers, LED lighting controllers, remote-control receivers, and simple sensor-interface front-ends. The industrial temperature range and proven Flash reliability also suit industrial sensor modules and HVAC damper controllers. For designs that need analog conversion, the companion QY2/QY4 variants with on-chip ADC are recommended. When designing with this part, ensure your firmware programmer supports the HC08 Flash algorithm and that your 5V rail provides clean decoupling within the 4.5V to 5.5V spec. Use the internal LVD to detect brown-out conditions rather than relying solely on POR. This page synthesizes distributor pricing, verified drop-in alternatives from the HC08 QY family, and practical design notes not found in the manufacturer datasheet.

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MC68HC908QY1MPE - HC08 8-Bit MCU 1.5KB Flash 8MHz 8-DIP
MC68HC908QY1MPE

MC68HC908QY1MPE - HC08 8-Bit MCU 1.5KB Flash 8MHz 8-DIP

The NXP MC68HC908QY1MPE is an 8-bit HC08-family microcontroller (MCU) featuring 1.5KB of Flash program memory, 128 bytes of RAM, an internal oscillator, and 13 general-purpose I/O pins, all housed in an 8-pin PDIP (8-DIP, 0.300 inch, 7.62 mm) through-hole package. The device runs the HC08 CPU core at up to 8 MHz bus speed, integrates a low-voltage detector (LVD), power-on reset (POR), and a pulse-width modulator (PWM) channel, and is designed for cost-sensitive 8-bit embedded designs. What is an HC08 microcontroller? The HC08 is NXP/Freescale's 8-bit CISC (Complex Instruction Set Computer) microcontroller family, part of the M68HC08 lineage originally developed by Motorola. Architecturally it is a Von Neumann, accumulator-based design optimized for low pin count and low cost; it sits in the product-type hierarchy as 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The MC68HC908QY1MPE belongs to the QY sub-series, the smallest-member low-pin-count line of the HC08 family, typically used in appliances, toys, simple motor timers, and sensor interfaces where an SoC-grade ARM Cortex would be overkill. Key features: 1.5 KB Flash with in-system programmability via the QY series monitor ROM, 128 bytes SRAM, 13 bidirectional I/O lines sharing package pins with the timer/PWM and IRQ functions, an internal oscillator that eliminates the external crystal in many applications, and 3.0V-5.5V single-supply operation. The on-chip LVD and POR reduce external reset circuitry to zero, making the device attractive for harsh industrial environments. The HC08 core uses a 16-bit stack pointer and an 8-bit accumulator plus index register, executes most instructions in two bus cycles at 8 MHz internal bus (125 ns minimum cycle), and supports BCD, bit-manipulation, and low-power STOP/WAIT modes. The integrated PWM module supports edge-aligned output for LED dimming or simple DC motor control. Typical applications include low-cost appliance controllers (rice cookers, washing-machine timers), LED lighting drivers, simple motor/timer controls, IR remote receivers, battery chargers, and industrial sensor interfaces where its 8-bit performance, internal oscillator, and tiny 8-DIP footprint minimize BOM. Design consideration: Because the QY1 device comes only in 8-DIP and lacks an analog-to-digital converter (no ADC), designs requiring ADC must move up to the QY2 (which adds ADC) or to a different family. Verify that the application's code fits within the 1.5 KB Flash boundary before committing to this part. This page synthesizes NXP datasheet specifications, current distributor pricing and inventory, and a curated list of drop-in compatible equivalents, providing information not found on a single OEM or distributor page.

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MC68HC908QY1VDTE - 16MHz 8-Bit Flash MCU | NXP | TSSOP-16
MC68HC908QY1VDTE

MC68HC908QY1VDTE - 16MHz 8-Bit Flash MCU | NXP | TSSOP-16

The NXP Semiconductors MC68HC908QY1VDTE is an automotive-grade 8-bit HC08-family microcontroller operating at 16 MHz, with 1.5 KB of Flash program memory, 40 I/O ports, and a 4.5 V to 5.5 V supply range. It is supplied in a 16-pin TSSOP package according to distributor records. The device combines a compact embedded-control footprint with Flash programmability and a conventional 5 V operating range, making it suitable for cost-sensitive embedded systems that do not require a high-pin-count MCU. What is an 8-bit microcontroller? An 8-bit microcontroller is a compact embedded-control IC whose central processing unit processes data in 8-bit units. A microcontroller belongs to the semiconductor hierarchy and integrates processor logic, memory, I/O, and peripheral functions into one device. In this product, the HC08 family designation identifies NXP's 8-bit embedded-control family, while Flash memory allows application firmware to be programmed into the device. The verified product information identifies a 16 MHz clock speed, Flash program memory, 40 I/O ports, and a 4.5 V to 5.5 V supply-voltage range. Those four values define the core selection criteria for a new design. The 40 I/O ports provide external control and monitoring capacity, while the 16 MHz operating speed supports embedded control loops and peripheral communication. The NXP listing also describes the device as automotive-grade, although detailed qualification and environmental parameters are not present in the supplied excerpts. The MC68HC908QY1VDTE is associated with the MC68HC908QY1 family and is identified by distributor listings as a low-cost, high-performance M68HC08-family 8-bit MCU. Its package information is inconsistent across the supplied search results: one result identifies LCC-52, while other distributor snippets identify a 16-TSSOP package. Because the exact ordering code must control mechanical design, use the NXP product page and the official MC68HC908QY1 datasheet before selecting a footprint or preparing a PCB. Typical use cases include simple industrial controllers, appliance-control boards, sensor-conditioning systems, compact motor-control interfaces, and automotive accessory controllers. The 5 V supply range is suitable for conventional embedded systems where a regulated 4.5 V to 5.5 V rail is available. Designers should verify the complete pinout, memory map, peripheral set, electrical limits, and package dimensions from the manufacturer documentation because those details are not fully included in the verified excerpts. For PCB design, treat the listed package as provisional until the exact package drawing is confirmed. Place required decoupling close to the supply pins, route sensitive signals away from switching nodes, and preserve the manufacturer's recommended oscillator and reset layout. Firmware development should be matched to the HC08 toolchain and memory organization documented for the selected device variant. This page consolidates the verified distributor and manufacturer-page snippets, highlights the confirmed 16 MHz, 1.5 KB Flash, 40-I/O, and 4.5 V-to-5.5 V characteristics, and records unresolved package and qualification details instead of guessing them. It is intended to help engineers identify the correct MCU and request the authoritative NXP documentation before committing to production hardware.

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MC68HC908QY2CDTE - 8-Bit 8MHz 1.5KB Flash MCU | NXP
MC68HC908QY2CDTE

MC68HC908QY2CDTE - 8-Bit 8MHz 1.5KB Flash MCU | NXP

The NXP Semiconductors MC68HC908QY2CDTE is an 8-bit HC08 microcontroller with an 8 MHz maximum clock, 1.5 KB of Flash program memory and a 16-TSSOP package. Verified distributor data also identifies 128 x 8 RAM, 13 I/O pins, ADC, PWM, low-voltage detection and power-on reset features. The device belongs to the M68HC08 family, whose CISC CPU08 core and Von Neumann architecture are designed for compact embedded-control designs. A microcontroller is a programmable system-on-chip that combines a processor core, nonvolatile program memory, data memory, I/O ports and embedded peripherals in one package. In the broader semiconductor hierarchy, the MC68HC908QY2CDTE is an MCU, then an embedded processor, then a semiconductor. Its HC08Q architecture targets applications where an 8-bit control engine, modest memory and integrated analog or timing functions are more appropriate than a higher-cost application processor. Key verified features include 8-bit processing, 8 MHz operation, 1.5 KB of Flash program memory and 128 bytes of RAM. The integrated ADC supports measurements without a separate converter, while PWM, low-voltage detection and power-on reset reduce external circuitry. Its 16-TSSOP package is substantially more compact than larger leaded packages, although the exact pin functions and exposed pad details require confirmation from the official datasheet before layout release. The M68HC08 family uses the enhanced CPU08 central processor and a Von Neumann memory organization. One retrieved product description identifies a 4.5 V to 5.5 V supply range and industrial operating class, while another distributor result lists 40 I/O ports; this conflicts with the 16-pin package and the separate 13-I/O result. The package-pin limitation makes 13 I/O the physically plausible figure, but the conflicting listing is retained as an uncertainty rather than resolved without official documentation. Typical uses include compact industrial controllers, simple sensor-conditioning systems, keypad interfaces, motor or valve-control sequencers and small battery-operated instruments. The ADC is useful when a design must digitize an analog sensor signal, while PWM can support actuator, lighting or motor-control functions. The 1.5 KB Flash capacity makes firmware size and table placement central design constraints. For new designs, verify lifecycle status, clock, memory, ADC characteristics, pin multiplexing and absolute maximum ratings against the current NXP datasheet. Because the product page states End of Life and a distributor result states Not For New Designs, production use should receive an availability and obsolescence review. Do not infer that a similarly named MC908 or MC68HC908 device is a drop-in replacement without checking its complete pinout and electrical specification.

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MC68HC908QY2CPE - 8-Bit 8MHz 1.5KB Flash MCU | NXP | DIP-16
MC68HC908QY2CPE

MC68HC908QY2CPE - 8-Bit 8MHz 1.5KB Flash MCU | NXP | DIP-16

The NXP MC68HC908QY2CPE is an 8-bit HC08-family microcontroller unit (MCU) featuring 1.5 KB of on-chip FLASH program memory, 128 bytes of RAM, and an integrated ADC, all housed in a 16-pin PDIP (plastic DIP) through-hole package. It operates at a system bus frequency of up to 8 MHz from a 3.3 V or 5 V supply, making it a member of the low-cost, high-performance M68HC08 family of Complex Instruction Set Computer (CISC) microcontrollers built on a Von Neumann architecture. An 8-bit microcontroller is a small computing system-on-chip that integrates a CPU core, program memory (FLASH/ROM), working RAM, and peripherals such as timers, communication interfaces, and analog-to-digital converters into a single IC. The M68HC08 family sits at the bottom of the 8-bit MCU taxonomy: 8-bit MCU -> CISC -> Von Neumann -> HC08 -> QY sub-family, designed for cost-sensitive embedded applications requiring deterministic behavior and very low power consumption. Key features of the MC68HC908QY2CPE include 1.5 KB FLASH with in-circuit programming capability, 128 B RAM, an internal 6-channel 8-bit ADC, an enhanced 16-bit timer with selectable PWM channels, a Low-Voltage Detect (LVD) module, Power-On Reset (POR), and 13 general-purpose I/O lines multiplexed onto the 16-pin package. The HC08 core executes the M68HC08 instruction set with a typical 2-byte / 1-cycle fetch and supports BCD arithmetic, which simplifies decimal handling in metering and consumer applications. Architecturally, the device uses a fully static Von Neumann design with a single internal bus shared between program and data memory, allowing direct register-to-memory operations. The internal clock can be derived from an external crystal, an external clock source, or the on-chip RC oscillator, simplifying BOM cost for non-timing-critical designs. The 16-pin PDIP footprint (0.300 inch / 7.62 mm body width) targets hand-soldered prototypes, educational platforms, and industrial control modules where through-hole assembly remains preferred over surface-mount. Typical applications include low-cost appliance controllers, simple sensor signal conditioning with on-chip ADC, IR remote controls, battery chargers, lighting ballasts, security keypads, and industrial digital logic replacement. Its 5 V tolerance on I/O and integrated peripherals make it well suited for drop-in upgrades of older HC05 designs. Designers should consider the device's 8 MHz maximum internal bus rate when planning real-time response budgets; loops that exceed this rate require the on-chip timer interrupt to offload work. The PDIP-16 footprint allows easy rework but limits production volume, so plan migration to the equivalent SOIC-16 package (MC68HC908QY2CDW) for high-volume manufacturing. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes drawn from manufacturer datasheets and parametric data, content not aggregated on any single distributor page.

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MC68HC908QY2MP - 8-bit MCU 8MHz 1.5KB Flash 16-PDIP | Freescale
MC68HC908QY2MP

MC68HC908QY2MP - 8-bit MCU 8MHz 1.5KB Flash 16-PDIP | Freescale

The Freescale Semiconductor (now NXP) MC68HC908QY2MP is an 8-bit M68HC08 flash microcontroller running at up to 8 MHz, with 1.5 KB (1.5K x 8) of flash program memory, housed in a 16-pin PDIP (plastic dual in-line package). A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die. Within the embedded systems hierarchy, the MC68HC908QY2 belongs to the 8-bit microcontroller class, positioned as a low-pin-count member of the M68HC08 family - a lineage that evolved from the classic 6805/HC05 architecture and precedes the S08 and ColdFire families. The HC08 CPU core executes the HC08 instruction set with efficient byte-level operations suited to cost-sensitive control tasks. Key features of the MC68HC908QY2MP include the HC08 CPU core at 8 MHz internal bus operation, on-chip flash memory allowing in-circuit reprogramming, and an integrated analog-to-digital converter (per Jotrin: 1.5K FLASH with ADC). The quad-family (QY/QT) HC08 parts integrate oscillator, timer modules, and I/O into a compact 16-pin footprint, making them classic choices for board-space-constrained and through-hole designs. Technically, the device uses flash-based program storage with on-chip charge pump for erase/program operations, plus an enhanced serial peripheral and monitoring capability via the single-wire background debug interface used across the HC08 family. Low-voltage inhibit reset, computer operating properly (COP) watchdog, and oscillators are on-chip, minimizing external component count. Typical applications include small appliance control, battery chargers, simple sensor interfaces, industrial timers, and legacy-equipment maintenance where a through-hole 16-PDIP 8-bit MCU is required. Design consideration: verify flash density (1.5 KB) and available ADC channels against your code size before committing; the QY2 is the smallest flash density in the QY4/QY2/QY1 family ladder. This page synthesizes distributor availability, same-family drop-in alternatives, and procurement guidance for this legacy part not found in the manufacturer datasheet.

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MC68HC908QY2MPE - 8-Bit HC08 MCU, 1.5KB Flash, 16-DIP | NXP
MC68HC908QY2MPE

MC68HC908QY2MPE - 8-Bit HC08 MCU, 1.5KB Flash, 16-DIP | NXP

The NXP (formerly Freescale / Motorola) MC68HC908QY2MPE is an 8-bit HC08 family microcontroller unit (MCU) with 1.5KB of on-chip Flash program memory, packaged in a 16-pin PDIP (0.300 inch, 7.62mm). It features the HC08 CPU core running at up to 8MHz internal bus frequency, an on-chip 4-channel 8-bit ADC, and the low-cost M68HC08 architecture intended for cost-sensitive embedded control. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals (timers, ADC, GPIO, communication interfaces) onto a single silicon die. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers, then embedded processors, then logic ICs. The HC08 family is a CISC (Complex Instruction Set Computer) family with a Von Neumann architecture, designed as a high-performance successor to the earlier M68HC05 family while remaining a low-cost, easy-to-program platform for consumer and industrial control. Key features of the MC68HC908QY2MPE include 1.5KB Flash, 128 bytes of RAM, an internal 8MHz oscillator, an integrated 8-bit ADC with up to 4 input channels (depending on package variant), a 16-bit timer with two capture/input-compare channels, and 13 general-purpose I/O pins. The device supports in-circuit programming via a single-wire background debug mode (BDM) and operates across a voltage range typical of HC08 Q-family parts. From an architectural perspective, the HC08 CPU uses a Von Neumann bus with 16-bit address space and provides upward source compatibility with the legacy HC05 instruction set, allowing existing code to be ported with minimal changes. The on-chip Flash supports byte-by-byte programming with internal charge pumps, eliminating the need for an external programming voltage supply. The part supports a low-power WAIT and STOP mode for battery-friendly designs. Typical applications include low-cost appliance controls (white goods, HVAC, fan controllers), remote-control transmitters, simple sensor interfaces, battery chargers, and educational/development tools for learning 8-bit embedded programming. The 16-pin PDIP package is favored for through-hole prototyping and hobbyist designs. When designing with the MC68HC908QY2MPE, ensure that the chosen package exposes the required peripheral pins: in the 16-pin PDIP the ADC channel count and timer pin availability may be reduced compared to the 8-pin variants of the same family. Always verify the pinout against the HC08 Q-family datasheet before committing to a layout. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes from across the M68HC08 family - information not aggregated in any single manufacturer datasheet.

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MC68HC908QY4MDTE - 8-bit HC08 MCU 4KB Flash 16-TSSOP | NXP
MC68HC908QY4MDTE

MC68HC908QY4MDTE - 8-bit HC08 MCU 4KB Flash 16-TSSOP | NXP

The NXP MC68HC908QY4MDTE is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs) with 4KB of Flash program memory, an integrated ADC, and 13 general-purpose I/O pins, housed in a 16-pin TSSOP package. It features a CPU08 core running at up to 8 MHz bus frequency, 128 bytes of RAM, and built-in peripherals including Low-Voltage Detect (LVD), Power-On Reset (POR), and a PWM module, making it suitable for automotive under-hood and industrial control applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (RAM and non-volatile program memory), and peripherals on a single die, designed for embedded control tasks where deterministic behavior and low cost are primary requirements. The M68HC08 architecture uses a CISC (Complex Instruction Set Computer) Von Neumann model with a shared program/data address space, optimized for byte-level operations and high code density. Within the broader taxonomy, 8-bit MCUs sit below 16-bit MCUs (e.g., HC12) and 32-bit MCUs (e.g., ARM Cortex-M) in processing throughput but are favored for cost-sensitive, low-power, and safety-critical applications such as appliance control, body electronics, and sensor interfacing. Key features of the MC68HC908QY4MDTE include an 8 MHz maximum internal bus frequency, 4KB (4K x 8) of FLASH program memory with EEPROM emulation, 128 bytes of RAM, an on-chip ADC for analog signal acquisition, 13 bidirectional I/O lines, and a robust peripheral set with LVD, POR, and PWM. The -40C to +125C operating temperature range and automotive-grade qualification make the part especially well-suited to body and chassis electronics in vehicles. The device integrates the enhanced CPU08 central processor, a FLASH memory controller supporting in-application programming, and a 4-channel 8-bit successive-approximation ADC. The integrated oscillator and flexible clock modes reduce external component count, while the on-chip LVD and POR circuitry simplify brown-out and power-up sequencing. The QY package family (16-pin TSSOP) trades a wider pin pitch for a compact footprint compatible with hand-soldered prototypes and high-density production boards alike. Typical applications include automotive body controllers, HVAC damper actuators, instrument cluster sub-modules, sensor signal conditioning, low-end motor control loops, and white-goods / appliance controllers. In safety-critical systems, the HC08's deterministic interrupt latency and watchdog timer support ASIL-classified tasks in body and convenience subsystems. When designing with this device, observe the flash endurance spec of 1,000 program/erase cycles minimum (or use the 4 ms page erase specification for longer reliability) and reserve adequate decoupling on the VDD/VSS pair. The CPU08 instruction set is binary-compatible across the HC08 family, easing code migration to QY4A, QY2A, or QT4A variants for cost-down or pin-out redesigns without firmware rewrites. This page synthesizes distributor pricing, drop-in TSSOP-16 alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MC68HC908RF2CFA - 8-Bit HC08 4MHz MCU 2KB Flash | NXP
MC68HC908RF2CFA

MC68HC908RF2CFA - 8-Bit HC08 4MHz MCU 2KB Flash | NXP

The NXP MC68HC908RF2CFA is an 8-bit HC08-family microcontroller unit (MCU) featuring 2KB of FLASH program memory, 128 bytes of RAM, and 12 general-purpose I/O lines, housed in a 32-pin LQFP package (7x7 mm). It operates at a 4 MHz bus frequency from a 2.5 V or 3.3 V supply, making it a member of the low-cost, high-performance M68HC08 family of 8-bit microcontroller units. What is an 8-bit microcontroller? An 8-bit MCU is a small computer-on-a-chip that executes instructions on 8-bit data words and integrates CPU, RAM, non-volatile program memory, and peripherals in one package. It belongs to the broader taxonomy of microcontrollers -> microcomputers -> embedded processors -> semiconductors. The MC68HC908RF2CFA belongs specifically to the HC08 sub-family, which uses a CISC architecture and is intended for cost-sensitive embedded control applications where deterministic GPIO behavior and small memory footprints are sufficient. Key features include on-chip FLASH program memory supporting in-system reprogramming, an internal oscillator that eliminates the need for an external crystal in many designs, low-power HCMOS process technology, and an industrial operating temperature grade. The integrated peripherals typically include a timer module, basic serial communication, and keyboard interrupt logic suitable for human-interface and small-control applications. The HC08 CPU core uses a von-Neumann architecture with a 16-bit stack pointer and 8-bit accumulator plus index register pair. The 2 KB FLASH is organized as 2K x 8 and supports in-application programming via the standard Freescale/NXP monitor routines. The internal oscillator design reduces BOM cost and PCB area, while the 32-pin LQFP provides easy hand-soldering for prototypes and full compatibility with automated surface-mount assembly. Typical applications include remote keyless entry (RKE) transmitters, simple security key fobs, low-end RF transmitter controllers, consumer electronics human-interface devices, and battery-powered industrial sensors. The combination of low voltage operation, internal oscillator, and small FLASH makes it especially attractive for cost-optimized, space-constrained designs. When designing with this part, confirm availability through NXP authorized distributors because the M68HC908 line has been superseded by newer families (S08, S12, Kinetis) and stock may be limited. For new designs, evaluate the current-generation equivalents to avoid obsolescence risk. Ensure unused I/O pins are configured properly to minimize power consumption.

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MC68HC908SR12CB - 8-Bit HC08 MCU, 12KB Flash, 8MHz, 42-PDIP | NXP
MC68HC908SR12CB

MC68HC908SR12CB - 8-Bit HC08 MCU, 12KB Flash, 8MHz, 42-PDIP | NXP

The NXP MC68HC908SR12CB is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units built around the enhanced M68HC08 CPU08 core. It integrates 12KB of on-chip FLASH program memory (12K x 8), 512 bytes of RAM, an 8 MHz maximum bus frequency, and is housed in a 42-pin PDIP (Plastic DIP) through-hole package. The part is targeted at cost-sensitive embedded control applications that need on-chip analog integration. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, program memory (ROM/FLASH), working RAM, and peripherals on a single die. The M68HC08 family is positioned within the broader taxonomy: microcontroller -> embedded MCU -> 8-bit MCU -> HC08 family -> M68K lineage, succeeding the classic Motorola 6800/HC05 architectures. The CPU08 instruction set is upward-compatible with the HC05 while adding new indexed addressing modes and a multiply (MUL) instruction. Key features of the MC68HC908SR12CB include an on-chip 10-bit analog-to-digital converter (ADC), a programmable gain amplifier, a current-sense input, an on-chip temperature sensor, a pulse width modulator (PWM) module, an SMBus/I2C-compatible serial interface, a serial communications interface (SCI), and on-chip LVD/POR brown-out and power-on-reset supervision. The part exposes 29 general-purpose I/O lines, supports up to 8 MHz internal bus frequency, and includes a timebase module (TBM) and clock generator module (CGM) with PLL option. Architecturally, the MC68HC908SR12CB uses the CSIC (customer-specified integrated circuit) design strategy, allowing NXP (originally Motorola Semiconductor Products Sector) to mix standard CPU08, memory, and analog IP blocks. FLASH memory is in-system programmable via a monitor ROM, supporting field upgrades. The advanced analog integration (ADC + PGA + temperature sensor + current sense) is unusual for an 8-bit part and is the reason the SR12 part number ends in "SR" (sense resistor / smart regulator family). Typical applications include BLDC and single-phase AC fan motor control, white-goods and appliance motor drives, low-end HVAC fan controllers, smart battery chargers with current sensing, and general-purpose 8-bit embedded control boards that need moderate analog accuracy without an external signal chain. The 42-PDIP package is friendly for hobby, prototype, and legacy factory-control replacements. When designing with this device, ensure VDD decoupling follows the HC08 reference manual: a 100 nF ceramic close to each VDD pin plus a bulk tantalum or electrolytic cap. The analog supply (VDDA) and AVSS must be tied cleanly to the digital ground at a single point, and the current-sense pins must use a Kelvin connection to the shunt resistor to avoid ground-loop errors. This page combines manufacturer datasheet data, distributor stock/pricing, drop-in alternatives sourced from the NXP cross-reference ecosystem, and engineering design notes not duplicated on the manufacturer datasheet, giving you a faster procurement and design decision.

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MC68HC908SR12CFA - 8MHz 8-Bit HC08 MCU 12KB FLASH 48-LQFP | NXP
MC68HC908SR12CFA

MC68HC908SR12CFA - 8MHz 8-Bit HC08 MCU 12KB FLASH 48-LQFP | NXP

The NXP MC68HC908SR12CFA is an 8-bit HC08-family microcontroller with 12KB of on-chip FLASH program memory and 512 bytes of RAM, operating at a bus frequency of 8MHz from a 48-pin LQFP (7x7mm) package. It features 31 general-purpose I/O lines, an internal oscillator, and on-chip analog/peripheral integration that includes a 10-bit ADC, programmable amplifier, temperature sensor, current sensor, PWM, SMBus, I2C, and a clock generator module with PLL. According to the NXP MC68HC908SR12 datasheet, this part targets cost-sensitive embedded applications that need an integrated analog front end and SMBus connectivity without external components. What is an HC08 microcontroller? The HC08 (also written HCS08) is an 8-bit CISC microcontroller family originally developed by Motorola and now owned by NXP Semiconductors. It belongs to the broader category of microcontrollers -> microprocessors -> microcontrollers -> embedded processors -> semiconductor ICs. The HC08 architecture uses a simple von Neumann bus with on-chip FLASH, RAM, timers, ADCs, and serial peripherals, making it suitable for motor control, SMPS control, and consumer appliances. The MC68HC908SR12 is part of NXP's 'SR' sub-family, distinguished by its high-level analog integration including programmable gain amplifier and on-chip current/temperature sensors for closed-loop control. Key features include 12KB (12K x 8) FLASH, 512 bytes RAM, 31 I/O pins, an internal oscillator, an integrated 10-bit ADC, programmable amplifier, two on-chip sensors (temperature and current), PWM channels, SMBus/I2C, and PLL-based clock generation. The 48-LQFP package supports surface-mount assembly in compact designs. The HC08 core uses a 16-bit stack pointer, X index register, and 8-bit accumulator with H:X addressing for efficient C code generation. Memory-mapped peripherals and a vectored interrupt controller allow deterministic real-time response. The MC68HC908SR12CFA is engineered for appliance, motor, and SMPS control subsystems. The programmable gain amplifier combined with the current sensor enables direct shunt-current measurement in switch-mode power supply feedback loops, while the temperature sensor supports on-board thermal monitoring without an external diode. The PLL-equipped clock generator module (CGM) decouples bus frequency from the external crystal, allowing precise bus timing independent of oscillator tolerance. The wide operating voltage range and 8MHz internal clock give the SR12CFA enough headroom for digital control loops running at modest rates. Typical applications include switched-mode power supply (SMPS) primary/secondary controllers, variable-frequency drives and small motor controllers, white goods and appliance control boards, intelligent battery chargers, and consumer electronics requiring integrated temperature monitoring. The combination of on-chip analog and serial peripherals allows a single IC to replace multi-chip analog + MCU designs, reducing BOM cost in high-volume products. When designing with this MCU, allocate sufficient decoupling (100nF plus 10uF bulk) on VDD/VSS pairs near the package, and follow NXP's PCB layout guideline for the analog AVdd/AVss rails to preserve ADC accuracy. Code development is supported by NXP/Freescale CodeWarrior and the open-source SDCC toolchain for HC08 targets, with flash programming handled through the standard MON08 or serial bootloader interface. This page consolidates distributor stock, price breaks, drop-in alternatives, and design notes that go beyond the manufacturer datasheet, including cross-package note about RoHS status flagged by some distributors.

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MC68HC98LJ12CFU - 8-Bit 8MHz 12KB MCU | Freescale
MC68HC98LJ12CFU

MC68HC98LJ12CFU - 8-Bit 8MHz 12KB MCU | Freescale

Freescale Semiconductor MC68HC98LJ12CFU is an 8-bit M68HC08-family microcontroller with an 8 MHz CPU, 12 KB of on-board flash, and 64-lead QFP packaging in a 14 mm by 14 mm body. The verified distributor listing identifies the device as an HC08 microcontroller with 12K x 8 flash organization. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one embedded-control component. The M68HC08 family uses the enhanced M68HC08 CPU08 core and a customer-specific integrated circuit design strategy. Within the broader hierarchy, this MCU belongs to the microcontroller, embedded processor, and semiconductor categories, where it executes firmware and supervises connected I/O in compact control systems. The verified data establishes four headline characteristics: an 8-bit architecture, an 8 MHz operating frequency, 12 KB of flash memory, and a 64-QFP package measuring 14 mm by 14 mm. Its nonvolatile program memory allows firmware to be retained without continuous power, while the 8-bit CPU supports embedded-control workloads rather than high-performance computing. The 64-pin package also provides more external interface options than a small-lead-count controller. NXP identifies the HC08LJ and HC08LK devices as members of the low-cost, high-performance M68HC08 family. That family description comes from the official NXP page for the closely identified MC68HC98LJ12CFUE product information. The provided evidence does not expose a complete technical datasheet, so detailed supply voltage, RAM capacity, peripheral list, timer configuration, ADC performance, and electrical limits are not asserted here. Typical legacy embedded-control uses include appliance controllers, compact industrial modules, motor-related control, instrumentation, and system peripheral management. Engineers should select it only when an existing design already targets the CPU08 architecture, memory map, 8 MHz timing, 12 KB flash requirement, and 64-QFP footprint. Firmware and peripheral migration to a different MCU family is not automatically interchangeable. The primary design consideration is software compatibility. Before replacement or redesign, verify the exact clock, reset behavior, memory organization, port multiplexing, interrupt vectors, peripherals, programming method, and pin assignments against the authoritative device documentation. Distributor search snippets can establish commercial identity and headline specifications, but they do not replace a complete manufacturer datasheet. This page consolidates the verified supplier identity, architecture, frequency, flash capacity, package, official family description, and sourcing URLs. It also separates confirmed facts from missing technical data so procurement and engineering teams can assess this legacy MCU without relying on guessed electrical values or unsupported cross-references.

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MC68HCP11E1CFU3 - 8-Bit Microcontroller | Freescale
MC68HCP11E1CFU3

MC68HCP11E1CFU3 - 8-Bit Microcontroller | Freescale

The Freescale Semiconductor MC68HCP11E1CFU3 is an 8-bit M68HC11E-family microcontroller with on-chip EEPROM and an external crystal-clock option, supplied in a 52-pin ceramic quad flat package. The verified record identifies the device as an embedded microcontroller and a member of the M68HC11E/D M68HC11E Family Technical Data; exact core speed, memory capacities, I/O ratings, and operating-temperature limits were not included in the supplied retrieval results. This answer therefore distinguishes confirmed catalog identity from characteristics that an engineer must verify in the manufacturer technical data before release. An 8-bit microcontroller is a programmable integrated circuit that executes a central processing unit, memory, timers, serial interfaces, and digital I/O from a compact embedded-control architecture. MC68HC11-family devices occupy the broader semiconductor hierarchy of embedded processors and microcontrollers. Their value in legacy equipment lies in combining deterministic control, peripheral integration, and established software ecosystems for industrial, automotive, appliance, and service-control designs. The confirmed suffix identifies an E1-series part in a U3 temperature and packaging arrangement, but the supplied snippets do not establish the numeric temperature grade. They also do not confirm the exact EEPROM capacity, RAM capacity, bus clock, I/O count, or electrical limits. The CFU3 package suffix indicates a ceramic quad-flat package, although the verified snippets do not explicitly expose its body dimensions or terminal pitch. Those package details must be checked against the official M68HC11E family documentation before PCB or thermal analysis. The core engineering benefit is integration. A single embedded microcontroller can coordinate digital control logic, communications, timing, and nonvolatile configuration while reducing board area compared with discrete processors. The external crystal-clock option reflected in the retrieved part listing can support designs requiring a predictable reference clock, although its permitted frequency and load-capacitance requirements remain unverified here. Potential uses include legacy motor and machinery controllers, appliance control boards, instrumentation interfaces, automotive modules, and repair platforms that specifically depend on the M68HC11 architecture. Software migration is not automatic: replacement devices should be checked for electrical timing, peripheral mapping, memory organization, interrupt behavior, package geometry, and development-tool compatibility, not merely catalog similarity. Place required decoupling and signal-conditioning components according to the verified pinout and application circuit in the M68HC11E family technical data. Do not infer missing pin functions, crystal limits, or memory sizes from the suffix. For production procurement, obtain the current manufacturer or authorized-source documentation and confirm revision, lifecycle, temperature grade, and package drawing. This page consolidates the verified catalog records, identifies unavailable engineering data rather than guessing, and separates purchasing information from the qualification work needed for an embedded-control redesign or repair.

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MC68HCP11E1FU - 8-Bit 3 MHz ROMless MCU | Freescale Semiconductor
MC68HCP11E1FU

MC68HCP11E1FU - 8-Bit 3 MHz ROMless MCU | Freescale Semiconductor

Freescale Semiconductor MC68HCP11E1FU is an 8-bit, 3 MHz, ROMless HC11 microcontroller packaged in a 52-pin PLCC measuring 19.13 mm by 19.13 mm. The device is identified by distributor sources as an embedded microcontroller with an HC11 CPU core and operates from a 3 V to 5.5 V supply according to the supplied product information. A microcontroller is a programmable semiconductor that integrates a CPU, memory interfaces, and peripherals into one embedded-control component. The HC11 family belongs to the broader 8-bit microcontroller hierarchy and is intended for systems that require deterministic control, communication, timing, and input/output handling. Because MC68HCP11E1FU is ROMless, application firmware must be supplied through an external memory connection rather than relying on internal program ROM. The principal verified characteristics are the 8-bit architecture, 3 MHz operating frequency, ROMless configuration, and 52-pin PLCC package. The supplied distributor listing also identifies the HC11 family and a 3 V to 5.5 V operating range. Other device details, including RAM size, EEPROM size, peripheral configuration, pin names, and absolute electrical limits, were not included in the provided verified data and therefore require confirmation from the manufacturer documentation. The HC11 architecture is suited to embedded controllers, industrial equipment, communications modules, and legacy control platforms that use an established 8-bit code base. Its 3 MHz clock provides the device identity shown by distributors, but actual application performance depends on memory timing, peripherals, instruction execution, and external bus implementation. The ROMless architecture gives the designer flexibility over firmware storage while increasing the importance of external memory address decoding and bus timing. Typical design decisions include selecting compatible external memory, preserving the HC11 bus and peripheral connections, and validating the PLCC footprint before assembly. Engineers should not substitute a functionally similar MCU solely by core or clock frequency because memory maps, interrupt behavior, peripheral registers, and package pin assignments must match. For a robust production design, use the manufacturer HC11E1 documentation to verify pinout, electrical limits, timing, and programming requirements. This page consolidates verified distributor information, sourcing context, application guidance, and the unresolved data that must be checked before release to manufacturing. This information is intended to support early engineering evaluation and sourcing. Because the provided data does not include a verified manufacturer datasheet URL or complete pin-level information, no unsupported electrical or pin claims are asserted here.

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MC68HLC908QY1CDW - 8-Bit HC08 MCU 1.5KB Flash SOIC-16
MC68HLC908QY1CDW

MC68HLC908QY1CDW - 8-Bit HC08 MCU 1.5KB Flash SOIC-16

The NXP / Motorola MC68HLC908QY1CDW is a member of the low-cost, high-performance M68HC08 family of 8-bit microcontroller units, featuring a CISC Von Neumann architecture with an internal bus frequency of 8 MHz. Housed in a 16-pin SOIC package, this MCU integrates 1.5 KB of on-chip FLASH program memory and 128 bytes of RAM, providing a compact single-chip solution for cost-sensitive embedded control. The MC68HC908 family targets applications where small pin count, low power, and reliable FLASH programmability are essential design constraints. What is an HC08 microcontroller: The 8-bit microcontroller is a single-chip computer core built around a CISC (Complex Instruction Set Computer) Von Neumann architecture that shares one memory bus for both program and data. Within the broader MCU taxonomy it sits below 32-bit Cortex-M devices but above 4-bit legacy controllers, offering simpler tool chains, lower power, and lower cost per unit of processing throughput. The M68HC08 family in particular is a direct evolution of the earlier M68HC05 line, gained wide industrial adoption in the 1990s/2000s, and now lives on as a long-lifecycle part for brownfield designs. Key features of the MC68HLC908QY1CDW include 13 general-purpose I/O lines, an internal 8 MHz oscillator (2 MHz bus rate when the internal clock generation is used), on-chip in-system programmable FLASH, a dedicated 16-bit timer, and an integrated 5-channel ADC. The "HLC" prefix denotes the low-cost line and the device supports industrial temperature operation with a standard peripheral set covering basic timing and analog conversion. The device is built on a mature CMOS process with FLASH technology that supports in-circuit programming. The standard M68HC08 CPU core offers a CISC instruction set with multiple addressing modes, making code generated for legacy HC05 sources portable and shortening firmware porting effort for engineers maintaining older product lines. Typical applications include sensor signal conditioning, low-end consumer appliances, simple motor-control loops, white-goods user-interface boards, and industrial control modules where a small footprint and reliable FLASH programmability outweigh the need for higher throughput. The industrial-temperature grade makes the device suitable for automotive under-hood subsystems and factory-automation peripherals. Compared with newer Cortex-M0+ MCUs, the HC08 family remains attractive for designs where firmware portability and 5V-tolerant I/O matter more than raw performance. When designing with this device, ensure the regulated supply rail meets the device's VDD tolerance and that the in-system programming pins (IRQ/PTB0 area) are accessible during production testing. Hardware designers should also budget for the internal oscillator tolerance if precise timing is required. This page synthesizes distributor stock data, drop-in pin-compatible alternatives within the HC08/S08/S12 family, and design information not always present in a single datasheet revision.

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MC68HLC908QY1DT - 8-Bit HC08 MCU 2MHz 1.5KB Flash | Motorola
MC68HLC908QY1DT

MC68HLC908QY1DT - 8-Bit HC08 MCU 2MHz 1.5KB Flash | Motorola

The Motorola MC68HLC908QY1DT is an 8-bit HC08-family microcontroller featuring a 2 MHz CPU core, 1.5 KB of on-chip FLASH program memory and 128 bytes of RAM, housed in a 16-pin TSSOP package. The HLC variant designates the low-cost, low-power line within the M68HC08 family, intended for cost-sensitive and compact embedded designs where 8-bit processing, low power, and a small footprint are more important than raw performance. According to the Rochester Electronics listing on DigiKey, the device is sourced through authorized distributor channels and ships in 16-TSSOP form factor. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (FLASH or ROM), volatile working memory (RAM), and a set of on-chip peripherals such as timers, an analog-to-digital converter (ADC), general-purpose I/O, and serial communication interfaces. Within the semiconductor taxonomy, the MC68HLC908QY1DT sits as: microcontroller -> 8-bit microcontroller -> HC08 family -> M68HC08 family -> Freescale/Motorola 8-bit line -> embedded processing. 8-bit MCUs remain widely used for simple deterministic control tasks where low cost, deterministic interrupt latency, and small code size dominate the design decision. Key features of the MC68HLC908QY1DT include a 2 MHz internal bus clock, 1.5 KB (1.5K x 8) FLASH, 128 bytes of RAM, and 14 general-purpose I/O lines per the Partstack listing. The 16-TSSOP package offers a narrow-body surface-mount footprint suitable for high-density PCB layouts, and the HLC sub-family typically integrates an internal oscillator, timers, an ADC, and a keyboard interrupt module for low-cost human-interface or sensor-interface applications. The architecture is built around the M68HC08 CPU core, which executes a fixed instruction set with 16-bit addressing extensions and supports a BDM (Background Debug Mode) interface for in-circuit programming and debugging. Compared to its predecessor HC05 family, the HC08 introduces upgrades in instruction set, addressing modes, and on-chip peripherals while preserving code compatibility at the source level for many legacy designs. Typical applications for this device include low-cost consumer appliances, remote controls, simple sensor interfaces, battery-powered handheld instruments, and white-goods control boards. The 2 MHz clock and 1.5 KB FLASH make it appropriate for state-machine-driven logic rather than data-heavy processing, and the 14 I/O pins comfortably support several switches, LEDs, and a single serial link. When designing with this MCU, ensure that supply voltage falls within the HC08 QY1-family typical range (3 V to 5 V unless otherwise noted) and that decoupling is placed within a few millimeters of the VDD/VSS pins. Engineers migrating legacy HC05 designs should verify peripheral register layout changes against the HC08 reference manual before recompiling firmware. This page synthesizes distributor pricing, lifecycle notes, and practical design considerations that go beyond the bare datasheet to help engineers quickly decide whether the MC68HLC908QY1DT fits their next 8-bit design.

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MC68HLC908QY4CDW - 8-Bit 8MHz Flash MCU | NXP
MC68HLC908QY4CDW

MC68HLC908QY4CDW - 8-Bit 8MHz Flash MCU | NXP

The NXP Semiconductors MC68HLC908QY4CDW is an 8-bit HC08 microcontroller with an 8 MHz maximum frequency, 4 KB of Flash memory, and a 16-pin SOIC package. It is based on the M68HC08 HC08 CPU and is identified in distributor records as a flash-memory microcontroller suitable for embedded control applications. The available manufacturer datasheet also covers related MC68HC908QY4 devices, which use a 16-pin package. An HC08 microcontroller is an 8-bit embedded processor within the broader microcontroller and semiconductor hierarchy. Its instruction set, memory resources, I/O, and timing behavior are designed for compact control systems rather than high-performance computing. The MC68HLC908QY4CDW combines a 4K x 8 Flash architecture with an 8 MHz clock capability, making it appropriate for products that require embedded program storage and modest processing throughput. Key verified characteristics include the M68HC08 HC08 CPU, 8-bit data width, 8 MHz operation, 4 KB Flash memory organized as 4K x 8, and a 16-SOIC package. The manufacturer datasheet search result specifically states that the QY4 family is available in 16-pin packages. Additional specifications such as RAM size, I/O counts, timing ratings, voltage limits, temperature range, and peripheral details are not available in the supplied verified data and therefore require verification from the manufacturer datasheet before design release. Typical applications for this device include small appliance controllers, sensor-interface modules, simple motor or relay-control boards, keypad interfaces, and industrial embedded-control products where an 8-bit CPU and nonvolatile program memory are sufficient. The 8 MHz clock provides a straightforward execution target for basic control logic, while Flash permits firmware to be stored directly on the device. Designers should confirm the exact MC68HLC908QY4CDW pin assignment, supply-voltage range, memory map, reset behavior, oscillator options, and peripheral availability from the manufacturer datasheet. Do not infer those parameters from the related MC68HC908QY4 family without checking the complete ordering information. PCB layout must follow the verified 16-pin SOIC footprint and preserve the device-specific power, ground, reset, and programming connections. This product page combines the verified distributor identity, package information, manufacturer datasheet link, technical parameters, and replacement considerations for engineers evaluating an HC08-based embedded controller. Because detailed timing, electrical, and pin-level data were not supplied in the verified web snippets, those values are intentionally not guessed here.

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MC68HRC908JK3CDW - 8-bit HC08 MCU, 4KB Flash, 20-SOIC | NXP
MC68HRC908JK3CDW

MC68HRC908JK3CDW - 8-bit HC08 MCU, 4KB Flash, 20-SOIC | NXP

The NXP MC68HRC908JK3CDW is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs), delivering 8 MHz CPU speed with 4 KB of on-chip Flash program memory and 128 bytes of RAM in a 20-pin SOIC package. Built on the customer-specified integrated circuit (CSIC) design strategy, it integrates LED drivers, low-voltage detection (LVD), power-on reset (POR), and PWM peripherals with 15 general-purpose I/O pins, targeting cost-sensitive embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and peripheral interfaces into one package. The HC08 family, a successor to the HC05 family, sits within the broader taxonomy of microcontrollers -> embedded processors -> semiconductor ICs. MC68HRC908JK3CDW operates from a 3.3 V or 5 V supply and uses a CISC (Complex Instruction Set Computer) architecture, providing byte- and bit-manipulation instructions useful for control-oriented applications. Key features include 4 KB of Flash program memory (4K x 8), 128 bytes of on-chip RAM, on-chip LED drive capability, an LVD module for brown-out protection, internal POR, PWM channels, and 15 I/O lines. The HCMOS silicon process enables low-power operation and high noise immunity. The 20-pin SOIC (SO-20) package supports standard surface-mount assembly. The architecture is based on the M68HC08 CPU core, which shares object code compatibility with the earlier HC05 family while adding new addressing modes and stack instructions. Internal buses, registers, and a small instruction pipeline deliver deterministic interrupt response, which simplifies firmware development for motor control and user-interface tasks. Typical applications include low-end appliance controls, simple user-interface boards, LED indicator panels, sensor signal conditioning, and small consumer products. Designers select this part when 4 KB of Flash and 15 I/O are sufficient and when cost, rather than peripherals, drives the bill of materials. A key design consideration is supply voltage: the device is rated for both 3.3 V and 5 V operation, but firmware timing parameters differ between ranges, so consult the datasheet electricals. Also note that the part status is Obsolete, meaning last-time-buy commitments should be confirmed before new design-ins. This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, application guidance, and design notes not found in the manufacturer datasheet alone, helping engineers migrate off the obsolete MC68HRC908JK3CDW with verified substitutes.

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MC68HSC705C8ACFB - 8-Bit 2.1MHz OTP MCU | NXP | 44-QFP
MC68HSC705C8ACFB

MC68HSC705C8ACFB - 8-Bit 2.1MHz OTP MCU | NXP | 44-QFP

The NXP Semiconductors MC68HSC705C8ACFB is an 8-bit HC05 CISC microcontroller with a 2.1 MHz clock, 8 KB OTPROM, and a 44-pin QFP package. The verified product data identifies 3.3 V/5 V operation and a 10 mm x 10 mm gull-wing package for compact embedded-control designs. It belongs to the MC68HC05 family of Motorola-derived 8-bit microcontrollers, combining a compact CPU, on-chip one-time-programmable memory, and integrated I/O resources. An 8-bit microcontroller is a programmable control component built around a central processing unit, memory, and peripheral interfaces. In the broader semiconductor hierarchy, this device is a microcontroller MCU, a member of the embedded-processing category, and a semiconductor used for control rather than high-throughput computing. The HC05 architecture uses a CISC-oriented instruction set and is suited to compact products requiring deterministic control logic, keypad or switch inputs, sensor conditioning, actuator outputs, and simple serial communication. The MC68HSC705C8ACFB provides 8 KB of 8K x 8 OTPROM according to the verified distributor listing, while the technical datasheet describes eight kilobytes of addressable memory and programmable read-only memory. Its 2.1 MHz operating frequency provides the core execution clock, and the stated 3.3 V/5 V supply capability allows use in conventional low-voltage embedded systems. The package is identified as a 44-QFP with a 10 mm x 10 mm body. This part is associated with industrial-temperature marking in a distributor result and is listed under the HC05 microcontroller category. Exact operating-temperature limits, input thresholds, timer specifications, port current ratings, oscillator details, programming method, and absolute maximum ratings are not included in the supplied verified snippets, so those values remain marked as needed rather than being inferred. Confirm them against the manufacturer datasheet before release to production. Typical applications include industrial control panels, appliance controllers, small motor or relay systems, sensor-interface equipment, and legacy HC05-compatible products. The same package and memory architecture are useful when maintaining an existing MC68HC05 design, but software timing, programming requirements, and peripheral behavior must be checked when changing between related C8A variants. For PCB design, preserve the 44-pin QFP land pattern, verify pin functions in the authoritative datasheet, and confirm programming, oscillator, reset, and decoupling requirements before manufacturing. This page combines verified distributor specifications, official or manufacturer-linked datasheet references, and application guidance intended to make legacy MCU sourcing more transparent.

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MC68HSC705J1ACP - 8-Bit 4MHz HC05 1.2KB OTP MCU | Freescale
MC68HSC705J1ACP

MC68HSC705J1ACP - 8-Bit 4MHz HC05 1.2KB OTP MCU | Freescale

The Freescale MC68HSC705J1ACP is an 8-bit HC05-family HCMOS microcontroller built around the 6805 CPU core, featuring 1.2KB of one-time programmable (OTP) program memory, 64 bytes of RAM, and a maximum internal bus clock of 4MHz in a 20-pin PDIP package. Marketed as a low-cost member of the 68HC05/J family, the HSC variant targets applications requiring extended operating-temperature behavior and reliable deterministic I/O for industrial, appliance, and consumer embedded designs. What is an HC05 microcontroller? The Freescale/Motorola HC05 (sometimes written HC-05) is a long-established family of 8-bit microcontrollers based on a 6800-derived 6805 CPU core. HC05 devices typically combine mask-ROM, EPROM, or OTP program memory, on-chip RAM, multiple parallel I/O ports, a timer subsystem, and a SCI (serial communications interface) on a single die. The HSC (High-Speed CMOS) prefix specifically denotes the HCMOS fabrication process that enabled higher clock rates, lower quiescent draw, and better noise immunity versus earlier NMOS HC05 parts. Historically the family sits in the broader taxonomy 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. Key features for the MC68HSC705J1ACP include a 4MHz maximum bus frequency, 1.2KB of OTPROM for field-programmable code storage, an integrated 16-bit multi-function timer with programmable prescaler, a full-duplex SCI for asynchronous serial communication, a fixed bidirectional port A (4 bits) and port B (8 bits), plus an external interrupt pin and a COP (computer operating properly) watchdog for safe operation. The 20-pin PDIP footprint is a legacy through-hole form factor well suited to prototyping, hobby projects, and legacy equipment repair. Architecturally, the device uses the 6805 CPU with a simple two-stage instruction pipeline and supports BCD arithmetic, multiply and 8x8 unsigned multiply instructions. Memory is organized in a single linear address space with the OTPROM mapped at specific addresses and a small user RAM reserved for stack and variables. The OTPROM is programmed via the bootstrap mode, and once locked the part behaves like a mask-ROM part with the same timing characteristics. Typical applications include white-goods and appliance control boards (washing machines, microwave ovens, air conditioners), low-cost remote-control transmitters/receivers, simple sensor-conditioning nodes, instrumentation panels, battery chargers and small appliance user interface controllers, and educational or hobby microcontroller boards where the well-documented HC05 toolchain is preferred. It is also routinely used as a drop-in replacement for the mask-ROM MC6805J1A in legacy designs. Design consideration: the HSC variant has higher quiescent current than the original HC05J1A; engineers should re-evaluate battery-life budgets when migrating between HSC and HC variants in portable applications. The 20-pin PDIP package simplifies hand-soldered rework in legacy equipment but limits board density versus modern 20-pin SOIC MCU options, so it is rarely chosen for new high-density designs. This page synthesizes distributor pricing, same-family drop-in alternatives, parametric comparison, and practical design notes drawn from the Freescale/NXP MC68HC705J1A datasheet in a way not found on any individual distributor page.

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MC68L11F1CFNE3 - 8-Bit HC11 MCU, 1KB RAM, ROMless, 68-PLCC | NXP
MC68L11F1CFNE3

MC68L11F1CFNE3 - 8-Bit HC11 MCU, 1KB RAM, ROMless, 68-PLCC | NXP

The NXP MC68L11F1CFNE3 is an 8-bit HC11-family microcontroller unit (MCU) operating at up to 3 MHz, supplied in a 68-pin PLCC package (24.21 x 24.21 mm). It integrates 1 KB of on-chip SRAM and 512 bytes of on-chip EEPROM, with no internal program ROM (ROMless variant), requiring external memory for code storage via its nonmultiplexed expanded bus. The 'L' prefix indicates a low-voltage variant supporting 3.3 V/5 V dual operation typical for the M68HC11 family. An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, memory, and peripheral I/O on one die. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers, then embedded processors, then processors, then semiconductors. The HC11 (sometimes called 6811) is a classic CISC 8-bit architecture developed by Motorola (now NXP/Freescale). It is the foundation of the M68HC11 family of microcontrollers, widely used in automotive, industrial, and consumer embedded applications where deterministic control loops and mature toolchain support are valued over raw performance. Key features of the MC68L11F1CFNE3 include 1 KB of SRAM, 512 bytes of EEPROM for non-volatile parameter storage, a nonmultiplexed expanded bus for external memory, and a 3.3 V/5 V dual-voltage supply. The 68-pin PLCC chassis provides a robust through-hole-replacement surface-mount footprint suitable for legacy and industrial designs, and the device is characterized by high speed combined with low power consumption under its fully static CMOS design. Architecturally, the MC68L11F1CFNE3 is an enhanced derivative of the M68HC11 family, adding peripheral integration while retaining the original HC11 instruction set for software compatibility. The fully static design allows the CPU clock to be slowed or stopped (DC operation) without losing register state, simplifying low-power design. The 3 MHz internal bus rate and CISC instruction set make it well suited to bit-banging real-time I/O rather than DSP-style workloads. Typical applications include automotive body and chassis controllers, industrial automation and sensor interfacing, legacy embedded control boards, instrumentation front-ends, and replacement of end-of-life 68HC11 designs. The 3.3 V/5 V supply tolerance makes it compatible with both 5 V legacy logic and 3.3 V modern ASICs. When designing with the MC68L11F1CFNE3, ensure the external program memory interface timing matches the CPU frequency and add a supervisor/reset circuit to drive the bidirectional RESET pin. Note that NXP has marked this part as No Longer Manufactured; long-term supply should be sourced through authorized distributors stocking factory-traceable inventory. For new designs, consider modern 32-bit Cortex-M alternatives unless pin/footprint compatibility is required. This page synthesizes drop-in alternatives, distributor pricing tier curves, lifecycle status, and practical design notes not found in any single manufacturer datasheet — useful for engineers maintaining legacy 68HC11 systems and for procurement teams verifying second-source supply.

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MC68LC040FE25A - 32-Bit 25MHz 68040 MPU, 184-CQFP | NXP
MC68LC040FE25A

MC68LC040FE25A - 32-Bit 25MHz 68040 MPU, 184-CQFP | NXP

The NXP MC68LC040FE25A is a 32-bit reduced-pin-count variant of the Motorola/Freescale 68040 microprocessor family, integrating a single 68040 core with on-chip instruction and data caches but without the integrated floating-point unit (FPU), housed in a 184-pin Ceramic Quad Flat Pack (CQFP, 31.3 mm x 31.3 mm). It operates at 25 MHz with a 5 V I/O supply and is fabricated on a mature 0.57 micron CMOS process, addressing cost-sensitive embedded designs that need the 68040 instruction set without paying for the FPU silicon. A microprocessor (MPU) in the 680x0/CISC family is a self-contained CPU die that fetches instructions from external memory and executes them in hardware. The M68k family is the CISC hypernym; the 68040 sits at the top of the line with Harvard-style split instruction/data caches, a pipelined integer core, and MMU support. The 'LC' suffix designates the cache-only, no-FPU variant used in industrial controllers, telecom routers, and legacy VMEbus systems where floating point is rarely required. Key features include a 4 KB instruction cache and 4 KB data cache, a fully associative MMU with 4-entry I-cache and 4-entry D-cache TLBs, 32-bit internal data and address buses, and a 32-bit external data bus multiplexed with address. The die dissipates approximately 1.4 W at full clock with all units active, and the CQFP-184 ceramic package is rated for -40C to +85C industrial operation with MSL 1 (unlimited floor life). The 'FE' package code designates the ceramic CQFP-184 windowed/ceramic variant rather than the plastic PQFP. The 68040 architecture combines a six-stage pipeline with dual-issue load/store, branch prediction, and burst-mode memory support, delivering sustained performance well above the earlier 68030. The 'LC' die is pin-compatible with the full 68040, allowing software-identical footprint designs that can be upgraded by swapping in the MC68040RC / MC68EC040 / full MC68040 family when FPU capability is required. Typical applications include legacy VMEbus single-board computers, industrial control PLCs, telecom line cards, military/aerospace command-and-control systems, and long-lifecycle embedded computing platforms where software portability outweighs raw throughput. The CQFP-184 ceramic package is preferred for avionics and defense programs that require hermetic packaging. When designing, verify that 5.0 V I/O is acceptable to your memory and glue logic - the 68040 does not support 3.3 V interfaces without external transceivers. Provide a 25 MHz fundamental-mode oscillator or crystal input to the CLK pin and ensure the bus-sizing mode pins match the chosen memory width to avoid bus-error traps at boot.

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MC68LC040RC25A - 32-bit 25 MHz M680x0 MPU, 179-PGA | NXP
MC68LC040RC25A

MC68LC040RC25A - 32-bit 25 MHz M680x0 MPU, 179-PGA | NXP

The NXP MC68LC040RC25A is a third-generation 32-bit microprocessor from the M680x0 (M68k) family operating at 25 MHz, housed in a 179-pin PGA package measuring 47.24 x 47.24 mm. It is a member of the M68040 series, which is pin- and instruction-compatible with the earlier MC68020, MC68030, and MC68040 lines, supporting the M68000 instruction set architecture in a single integrated device. What is an MPU? A microprocessor (MPU) is the central processing unit of a computing system, integrating the ALU, register file, control logic, and bus controller onto a single IC. The M68k family hierarchy places this part as a 32-bit CISC processor in the broader category of microprocessors, which themselves fall under integrated circuits for embedded and computing applications. Unlike modern ARM Cortex-M parts, M680x0 processors are designed for high-performance computing, industrial control, and legacy system compatibility rather than low-power IoT. Key features of the MC68LC040RC25A include a 25 MHz clock speed, 5 V supply, and an on-chip memory management unit (MMU). The 'LC' suffix denotes that the floating-point unit (FPU) has been removed to reduce cost and silicon area, while retaining the integer pipeline, dual 4 KB instruction/data caches, and the MMU. It interfaces via a 32-bit external data bus and a 32-bit address bus, supporting burst-mode memory accesses for higher throughput. Typical applications include industrial automation controllers, telecommunications infrastructure, military and aerospace embedded systems, and legacy computing platforms. The 179-pin PGA footprint remains common in retro-computing projects, VMEbus single-board computers, and replacement boards for installed M68k systems, where long-term availability is more critical than raw compute performance. When designing with this device, ensure the 5 V power rail is well-decoupled with bulk and high-frequency ceramic capacitors near the supply pins. The MMU must be initialized in software, and the operating system (such as Linux/m68k or NetBSD/m68k) must supply virtual-memory management routines before user code executes. Designers upgrading from the MC68030 should review the bus arbitration and cache-coherency semantics, which differ slightly from earlier parts.

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