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Produits (39 000+)

MC9S08PT8VWJ - 8-bit S08 MCU, 8KB Flash, 20-SOIC | NXP
MC9S08PT8VWJ

MC9S08PT8VWJ - 8-bit S08 MCU, 8KB Flash, 20-SOIC | NXP

The NXP Semiconductors MC9S08PT8VWJ is an 8-bit S08-core microcontroller with 8KB (8K x 8) flash memory, a 20 MHz CPU bus clock, and a 3.3 V / 5 V operating supply, housed in a 20-pin wide SOIC (0.295 inch, 7.50 mm width) package. An 8-bit microcontroller (MCU) is a self-contained computing device integrating a CPU core, program flash memory, data RAM, EEPROM, timers, and peripherals on a single chip. MCUs form the lowest level of the embedded processing hierarchy - below 16-bit and 32-bit MPUs - and are widely used for cost-sensitive control tasks. The S08PT family belongs to NXP's (formerly Freescale) HCS08/S08 lineage of CISC 8-bit controllers, a mature architecture supported by CodeWarrior development tools. The MC9S08PT8VWJ integrates a touch sensing interface (TSI), on-chip EEPROM, and a motor control FlexTimer, features specifically chosen by NXP to simplify appliance and industrial designs and reduce total system cost. The 5V-tolerant supply operation makes the part more durable and reliable in harsh industrial and user-interface environments, and the S08P family is designed to meet the IEC 60730 appliance safety standard. Architecturally, the S08 CISC core executes compact code from 8KB of flash at up to 20 MHz, with industrial temperature grade operation for harsh environments. The FlexTimer provides PWM outputs suitable for motor control, lighting, and power conversion, while the TSI eliminates external capacitive-touch controllers in user-interface designs. Typical applications include appliance control boards (washing machines, cooktops, fans), small motor control, capacitive-touch user interfaces, and general industrial control where a 5V noise-immune 8-bit MCU is preferred. Design consideration: because this device is NRND (Not Recommended for New Designs) per NXP, new projects should evaluate the S08P successor or pin-compatible parts, and existing designs should plan a lifecycle migration path. This page synthesizes distributor pricing, availability, and drop-in replacement analysis not found in the manufacturer datasheet. Pricing referenced is as of 2026-10-12.

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MC9S08QA2CDNE - 8-Bit 20MHz 2KB Flash MCU | NXP 8-SOIC
MC9S08QA2CDNE

MC9S08QA2CDNE - 8-Bit 20MHz 2KB Flash MCU | NXP 8-SOIC

The NXP MC9S08QA2CDNE is a member of the cost-effective, high-performance S08 family of 8-bit microcontroller units featuring a 20 MHz HCS08 CPU core, 2 KB of on-chip Flash, and 8-pin SOIC packaging. It operates from 1.8 V to 3.6 V supply and delivers 20 MHz bus speed from a 40 MHz core, targeting cost-sensitive embedded applications that require compact code footprint. An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, volatile memory (RAM), non-volatile memory (Flash/ROM), and programmable peripherals. 8-bit MCUs sit at the entry-level of the microcontroller hierarchy (8-bit -> 16-bit -> 32-bit -> SoC) within the broader semiconductor category, and they remain dominant in cost- and power-constrained designs such as appliance controls, sensor nodes, and human-interface replacement of discrete logic. The HCS08 core executes the legacy HC08 instruction set with the added BGND instruction for background debug. Key features of the MC9S08QA2CDNE include the HCS08 CPU delivering up to 20 MHz bus speed, 2 KB Flash program memory, on-chip RAM for data, two very low-power stop modes for battery life extension, an integrated low-voltage detection (LVD) module with reset or interrupt capability, and a background debugging system (BDCS) with breakpoint capability for in-circuit debug. The 8-pin SOIC package enables compact PCB layouts in space-constrained designs. The part uses a Freescale/NXP S08 CISC architecture with HC08 upward compatibility, easing migration from legacy HC08 designs. The architecture combines a 16-bit stack pointer and index register (H:X) with 8-bit data paths, balancing code density against throughput. On-chip peripherals and the integrated LVD reduce external component count. Typical applications include low-cost appliance controllers, battery-powered sensor interfaces, simple user-interface replacements, and industrial sensor signal conditioning where the 8-bit core, low-power stop modes, and small Flash footprint are sufficient for the firmware image. When designing with this device, ensure the supply rail is held within the 1.8 V to 3.3 V range (3.6 V absolute maximum) and that bulk decoupling is placed close to the VDD pin. LVD should be configured for the application brown-out threshold to prevent Flash corruption during supply dips.

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MC9S08QA2CPAE - 8-bit S08 MCU 2KB Flash 20MHz | NXP
MC9S08QA2CPAE

MC9S08QA2CPAE - 8-bit S08 MCU 2KB Flash 20MHz | NXP

The NXP MC9S08QA2CPAE is a low-cost, high-performance 8-bit microcontroller from the S08QA family with 2KB of on-chip Flash memory, an HCS08 CPU core capable of up to 20 MHz bus speed (40 MHz core), and an 8-pin PDIP through-hole package. It operates from 1.8 V to 3.6 V across the industrial temperature range of -40C to +85C and integrates 2KB Flash, 128 B RAM, and a low-voltage detection block with reset or interrupt capability. An 8-bit microcontroller (MCU) is a single-chip computer optimized for embedded control tasks, integrating a CPU, non-volatile program memory, volatile data memory, and peripherals such as timers, ADCs, and communication interfaces on one die. Within the broader semiconductor taxonomy, MCUs sit beneath microprocessors and alongside DSPs; the HCS08 core specifically targets cost-sensitive, deterministic control in appliance, consumer, and industrial sensing applications. The S08 instruction set is source-compatible with the legacy HC08 core, extended with the BGND instruction for background-debug-mode operation. Key features of the MC9S08QA2CPAE include 2 KB of Flash program memory organized as 2K x 8, 128 B of on-chip RAM, an internal clock generator, an 8-channel 10-bit ADC, two timers (TPM), an SCI/UART, an SPI peripheral, and support for up to 32 interrupt/reset sources. The device offers two very low-power stop modes and a wait mode, with fast wake-up times suitable for battery-powered duty-cycled applications. On-chip debug and trim support enable field calibration without external programmers. The S08QA architecture pairs a 40 MHz internal bus with a 20 MHz peripheral bus, allowing deterministic interrupt latency and predictable timer behavior. The Flash memory supports in-application programming via a software routine, and the on-chip voltage regulator maintains core logic across the full 1.8 V to 3.6 V supply range, eliminating the need for an external regulator in most designs. Typical applications include low-end appliance controls, lighting ballasts, battery chargers, fan controllers, smoke detectors, simple sensor signal conditioners, and replacement of discrete logic in cost-sensitive industrial modules. The 8-pin PDIP form factor suits through-hole prototyping boards and legacy designs where hand-soldering or socketed parts are preferred. When designing with this part, ensure the supply decoupling follows the manufacturer reference layout with a 100 nF ceramic capacitor within 5 mm of the VDD pin and a bulk 4.7 uF capacitor on the same rail. Avoid routing high-frequency signals near the oscillator pins to preserve ADC accuracy. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not found in any single manufacturer datasheet, supporting both new designs and legacy maintenance of installed S08QA sockets.

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MC9S08QA4CDNE - 20MHz 4KB 8-Bit MCU | NXP
MC9S08QA4CDNE

MC9S08QA4CDNE - 20MHz 4KB 8-Bit MCU | NXP

The NXP Semiconductors MC9S08QA4CDNE is an 8-bit HCS08 microcontroller rated up to 20 MHz, with 4 KB of Flash and an 8-pin SOIC package. It operates across a 1.8 V to 3.3 V supply range and supports low-voltage detection, reset or interrupt response, two very-low-power stop modes, and an HC08 instruction set with the BGND instruction. A microcontroller is a compact programmable control component that integrates a CPU, memory, and peripherals into one semiconductor device. The HCS08 MCU belongs to the S08 family of 8-bit microcontrollers and provides a cost-effective platform for embedded control. Its compact SOIC-8 package makes it suitable for space-constrained products, although its limited pin count requires careful prioritization of external connections. The verified product data identifies a maximum CPU frequency of 20 MHz and 4 KB, or 4K × 8 bits, of Flash. The HCS08 core supports as many as 32 interrupt or reset sources, breakpoint-controlled background debugging, and the BGND instruction. The device family combines 1.8 V to 3.6 V operation in the retrieved manufacturer-family data, while the target listing identifies the broader 1.8 V to 3.3 V operating range. MC9S08QA4 devices are positioned for low-cost, low-power embedded systems. Their two low-power stop modes can reduce activity during idle periods, while low-voltage detection helps the firmware respond to falling supply voltage. On-chip memory reduces external component count, and the 8-pin package can simplify PCB assembly when the design needs only a small number of I/O functions. Typical uses include small sensor controllers, simple motor controllers, household appliances, compact timers, and low-cost embedded control modules. The 20 MHz processor supports more responsive control loops than slower general-purpose 8-bit devices, but engineers must account for the limited memory and I/O available on an 8-pin MCU. When selecting this MCU, verify pin assignments, reset behavior, clock requirements, and programming compatibility in the manufacturer documentation. Because the part is presented as an end-of-life product on NXP's product page, new designs should check lifecycle status and consider a currently supported MCU unless regulatory, cost, or legacy requirements justify the original device. This page consolidates the verified distributor listings, lifecycle information, package details, and design-oriented guidance for engineers evaluating this legacy 8-bit S08 microcontroller.

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MC9S08QA4CFQE - 8-bit S08 MCU, 4KB Flash, 20MHz | NXP Semiconductors
MC9S08QA4CFQE

MC9S08QA4CFQE - 8-bit S08 MCU, 4KB Flash, 20MHz | NXP Semiconductors

The NXP Semiconductors MC9S08QA4CFQE is an 8-bit S08 microcontroller unit (MCU) featuring a 20 MHz HCS08 CPU core, 4 KB of on-chip Flash program memory, and 256 B of RAM, housed in an 8-pin DFN-EP (4x4 mm) package with an exposed thermal pad. It operates from 1.8 V to 3.3 V supply, integrates background debugging with BGND instruction support, and provides up to two additional breakpoints during in-circuit debugging. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/RAM), and peripherals such as timers, ADCs, and communication interfaces. The MC9S08QA4 belongs to the cost-effective, high-performance S08 family of 8-bit microcontrollers from NXP (formerly Freescale). Within the broader semiconductor taxonomy, it sits under 8-bit MCU -> microcontroller -> embedded processor -> semiconductor device. The S08 architecture uses the HC08 instruction set (backward-compatible) with the added BGND instruction for background debug, enabling non-intrusive in-circuit programming and breakpoint-based debugging. Key features include an internal clock source, on-chip memory, two very low-power stop modes for battery conservation, and low-voltage detection with reset or interrupt capability. The 8-pin DFN-EP package minimizes board area while providing a thermal pad for improved heat dissipation. Single-wire background debug mode (BDM) allows in-circuit programming and debug without consuming I/O pins. The HCS08 CPU executes most instructions in 1-2 bus cycles, achieving throughput close to 1 MIPS/MHz. The 4 KB program memory supports C-language firmware development for typical small embedded tasks. The integrated low-voltage detect (LVD) circuit protects against brown-out conditions by asserting reset or generating an interrupt when VDD drops below a programmed threshold. Typical applications include low-cost consumer electronics, battery-powered sensors, home appliances, and simple motor/relay control where a small footprint and low power are essential. The wide 1.8 V to 3.3 V range supports both single-cell Li-ion and 2xAA battery-powered designs. When designing with this part, ensure the exposed pad is soldered to a sufficiently large copper pour to meet thermal and electrical ground requirements. Programming requires a BDM tool compatible with the HCS08 family; the integrated stop modes require careful peripheral state management on wake-up to minimize current consumption. This page synthesizes distributor pricing, drop-in alternatives within the same 8-DFN-EP footprint, and practical design notes not consolidated in the manufacturer datasheet alone.

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MC9S08QA4CPAE - 20MHz 8-Bit MCU, 4KB Flash | NXP | DIP-8
MC9S08QA4CPAE

MC9S08QA4CPAE - 20MHz 8-Bit MCU, 4KB Flash | NXP | DIP-8

The NXP Semiconductors MC9S08QA4CPAE is an 8-bit S08QA-series microcontroller built around the HCS08 central processor unit, operating at up to 20 MHz with 4 KB of on-chip Flash memory in an 8-pin DIP package. It supports a 1.8 V to 3.3 V operating range and integrates low-power stop modes, low-voltage detection, and reset or interrupt response. Its compact through-hole package makes it useful for cost-sensitive embedded control, sensor conditioning, simple actuator control, and low-power instrumentation. The S08QA is a cost-effective, high-performance member of the S08 family of 8-bit microcontroller units. An MCU integrates a processor core, program memory, data memory, peripherals, and interrupt control on one semiconductor device. This integration reduces component count and board area while giving embedded designers direct control over real-time input sampling, timing, communication, and output sequencing. Key verified features include a 20 MHz HCS08 CPU, 4 KB of Flash, an 8-pin PDIP package, operation from 1.8 V to 3.3 V, two very low-power stop modes, and low-voltage detection with reset or interrupt. The manufacturer describes the family as offering on-chip memory and background debugging capability. The added BGND instruction and breakpoint capability support in-circuit debugging, while the low-voltage functions improve behavior during unstable supply conditions. The MC9S08QA4CPAE is appropriate when a design needs deterministic low-cost control rather than a high-speed processor or large memory footprint. Its 4 KB Flash capacity is suitable for compact firmware, and its 20 MHz clock provides processing headroom for basic control loops. The 8-pin DIP package simplifies prototyping, automated assembly compatibility checks, and hand-installation during development, although production designs must account for through-hole mechanical requirements. Typical applications include low-cost sensor interfaces, simple motor or relay controllers, building and appliance controls, battery-operated equipment, and compact embedded instruments. The device is particularly suitable when low voltage, low-power stop modes, local reset behavior, and simple 8-pin integration are more important than high pin count or extensive communications peripherals. A key design consideration is to verify the exact pinout and peripheral functions in the manufacturer datasheet before assigning connections. The 8-pin package leaves limited I/O, so a pin-sharing decision must balance external interfaces, debug access, reset requirements, and power connections. For production sourcing, confirm lifecycle status and current availability with the manufacturer or authorized distributors. This page combines verified NXP product information, manufacturer and distributor references, package details, pricing context, application guidance, and replacement analysis. It distinguishes directly verified electrical facts from parameters that require design review, helping engineers evaluate the MC9S08QA4CPAE without relying on generic MCU specifications.

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MC9S08QB4CGK - 8-Bit 20MHz MCU 4KB Flash | NXP | QFN-24
MC9S08QB4CGK

MC9S08QB4CGK - 8-Bit 20MHz MCU 4KB Flash | NXP | QFN-24

NXP Semiconductors MC9S08QB4CGK is an 8-bit S08 microcontroller with a 20 MHz CPU, 4KB flash memory, 256 bytes of RAM, and a 24-pin HVQFN package measuring 5 mm by 5 mm. The device operates from a 1.8 V supply and is designed for entry-level embedded applications where a compact package, low-power operation, and a compact instruction set are valuable. An MCU, or microcontroller, is a single-chip embedded controller containing a CPU, program memory, data memory, and peripherals for controlling a specific product. The S08 core belongs to the 8-bit microcontroller hierarchy within the broader semiconductor and embedded-processing market. It is commonly used in simple appliances, sensors, motor controls, access equipment, and consumer products where control logic, communication, and analog or digital interfaces must share one economical platform. The MC9S08QB4CGK combines 20 MHz processing performance with 4KB of flash and 256 bytes of RAM. Its S08 instruction set and integrated microcontroller resources make it suitable for compact control loops, button and switch handling, display or indicator control, and simple peripheral interfacing. The 1.8 V operating supply supports low-voltage embedded systems and helps reduce the power budget in battery-operated designs when the application uses the MCU's low-power operating modes appropriately. The 24-HVQFN package is intended for surface-mount PCB assembly and provides a compact solution for space-constrained products. Because the package is very small, PCB layout should provide adequate thermal spreading and manufacturing clearance. The exposed pad, if present in the package drawing, should be connected according to the manufacturer's land-pattern and thermal guidance rather than treated as an optional mechanical feature. Typical applications include consumer appliances, small motor-control boards, building and access equipment, simple sensor nodes, programmable controllers, and compact user-interface modules. In these systems, the 4KB flash program area limits application code size, while the 20 MHz CPU supports responsive sequential control and peripheral service routines. The most important design consideration is confirming that the controller's memory size, operating voltage, clock requirements, peripheral set, and package footprint match the intended design. A software replacement should not be assumed to be electrically or pin compatible merely because it uses the S08 family. Validate the pin description table, programming configuration, clock setup, and reset behavior against the manufacturer documentation before committing to a redesign. This page combines manufacturer product information, verified distributor listings, family-level cross-reference information, and practical selection guidance. It also identifies the limits of direct substitution for an end-of-life MCU so engineers can distinguish a PCB-compatible choice from a merely related S08 device.

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MC9S08QB4CTG - S08 8-bit MCU, 4KB Flash, 20MHz CPU | NXP
MC9S08QB4CTG

MC9S08QB4CTG - S08 8-bit MCU, 4KB Flash, 20MHz CPU | NXP

The NXP MC9S08QB4CTG is a member of the S08QB family of 8-bit microcontrollers built around the HCS08 central processing unit, integrating 4KB of on-chip Flash program memory and operating at CPU bus speeds up to 20 MHz. The device is housed in a 16-pin Thin Shrink Small Outline Package (TSSOP-16) and is optimized for cost-sensitive, low-power embedded designs that require basic digital I/O, on-chip analog peripherals, and a small code footprint. According to the NXP product page, the device supports operation from a wide supply range down to 1.8 V across the industrial temperature range, making it suitable for battery-powered and energy-harvesting applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile RAM, and a fixed set of peripheral modules such as timers, ADCs, communication interfaces, and GPIO. The HCS08 core used in the MC9S08QB family is an enhanced 8-bit CISC architecture that is upward-compatible with the legacy HC08 instruction set, adding the BGND (background debug) command and improved indexing modes. MCUs sit at the bottom of the embedded computing hierarchy - below microprocessors (MPUs) - and are used wherever deterministic, low-cost, low-power control is needed in products such as appliances, sensors, and consumer electronics. Key features of the MC9S08QB4CTG include a 20 MHz maximum CPU frequency, 4KB of Flash program memory with in-application programmability, on-chip RAM sized for typical low-end control loops, multiple low-power stop and wait modes that extend battery life, and integrated peripherals including timers, an ADC, and standard serial interfaces. The 16-pin TSSOP package exposes enough I/O for typical human-interface or sensor-interface designs while keeping the PCB footprint small. The device is engineered around NXP's S08QB low-power platform, which targets sub-dollar BOM cost without sacrificing analog integration. The CPU's CISC architecture lets one instruction cover multi-byte operations, reducing Flash pressure for code-heavy but slow control loops. Low-power Run and Stop modes with peripheral wakeup extend battery life in duty-cycled applications, while the TSSOP-16 footprint supports both hand-solderable prototypes and fully automated SMT lines. Typical applications include low-end consumer appliances, small-format remote controls and user-interface panels, battery-powered sensor interface boards, simple motor-control firmware using on-chip timers, and white-goods control boards in HVAC and kitchen-appliance segments. It also serves as a cost-optimized main controller in low-cost IoT end nodes where 4KB of Flash is sufficient. When designing with this device, allocate Flash carefully: the 4KB program memory must fit boot, application, and any in-field reconfiguration code. Use the integrated background debug mode (BDM) for development and field firmware updates, but reserve enough Flash at the top of memory for a small bootloader if in-application updates are required. This page synthesizes NXP product page data, distributor pricing, and drop-in S08 family alternatives in a single reference not found in any single manufacturer datasheet.

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MC9S08QB4CWL - 8-Bit 20MHz 4KB MCU | NXP | Embedded Control
MC9S08QB4CWL

MC9S08QB4CWL - 8-Bit 20MHz 4KB MCU | NXP | Embedded Control

The NXP Semiconductors MC9S08QB4CWL is an 8-bit HCS08 microcontroller operating up to 20 MHz, with 4 KB of Flash program memory in a 28-pin SOIC package. It is designed for low-power embedded-control applications that require compact code storage, integrated control peripherals, and flexible serial connectivity. The verified distributor data identifies the device as an S08 microcontroller with 4K x 8 Flash memory and a 28-SOIC package. What is an 8-bit microcontroller? An MCU is a semiconductor containing a CPU, program memory, data memory, and peripherals on one integrated circuit. It belongs to the embedded-control and microcontroller hierarchy, where firmware repeatedly monitors inputs, executes control logic, and drives outputs. The HCS08 CPU in this device uses an 8-bit architecture suited to cost-sensitive, compact control systems rather than compute-heavy applications. Key verified features include a maximum CPU frequency of 20 MHz, 4 KB of Flash memory, a 28-SOIC package, and an operating temperature range of -40 °C to +85 °C. Available connectivity features described in the retrieved component data include I2C, LIN, SCI, and SPI. The low-power MCU positioning also makes the device relevant to battery-operated controls, small appliances, and compact automation modules. The S08 architecture integrates the processor and embedded peripherals into a single device, allowing a design to replace separate discrete control logic. The 4 KB Flash capacity supports firmware storage for simple control loops, while the 20 MHz clock provides execution headroom for peripheral handling. However, memory and CPU capacity should be checked against the final firmware image because the verified data does not provide RAM size, ADC details, GPIO count, or voltage limits. Typical applications include LED and keypad control, low-power embedded modules, small motor or actuator controllers, serial-connected sensors, and compact industrial-control panels. NXP’s product page describes the QB family as an 8-bit MCU solution featuring integrated keyboard-interface capability and high-current LED drivers, while the retrieved component listing also identifies I2C, LIN, SCI, and SPI connectivity. For PCB design, confirm the complete pinout and electrical limits against the manufacturer datasheet before layout. Keep the 20 MHz clock and decoupling layout clean, use the package-specific footprint, and verify that the intended serial interfaces meet the system’s voltage, timing, and protocol requirements. This page consolidates verified distributor specifications, lifecycle information, sourcing references, and application-oriented design guidance. Because the device is identified by NXP as End of Life, long-term designs should confirm availability, migration options, and any approved replacement before committing new production releases.

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MC9S08QB8CGK - 8-bit 20MHz S08 MCU 8KB Flash | NXP
MC9S08QB8CGK

MC9S08QB8CGK - 8-bit 20MHz S08 MCU 8KB Flash | NXP

The NXP Semiconductors MC9S08QB8CGK is an 8-bit S08 microcontroller with an 8KB flash memory program area, a maximum CPU frequency of 20MHz, and a 24-HVQFN 5x5 mm package. It is designed for embedded control applications that require compact packaging, deterministic peripheral control, and low-power operation in consumer, industrial, and automotive-style embedded products. A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, and peripherals such as timers, serial interfaces, and analog or digital I/O. The MC9S08QB8 belongs to the NXP S08 family, using the HC08 instruction set with added BGND and other S08 features. The S08 architecture is positioned between simple 4-bit controllers and more complex 32-bit processors for compact embedded control systems. The main identifiable specifications of the MC9S08QB8CGK are its 8-bit S08 CPU, 20MHz maximum operating frequency, 8KB flash memory, and 24-HVQFN package. The available component listings also identify operation from 2.5V or 3.3V supply configurations. This combination makes the device suitable for motor control, appliance control, keypad interfaces, lighting systems, and compact industrial controllers where a small pin count and embedded flash are valuable. The device architecture places the CPU, flash program memory, data RAM, clock, reset, and communication peripherals in one package. Its 8-bit instruction set supports embedded control workloads without requiring a separate external memory interface for firmware storage. The 20MHz clock capability provides additional timing margin for interrupt handling, periodic scanning, communications, and peripheral control, although actual firmware performance depends on the selected bus clock, peripherals, and application code. Typical designs use the MC9S08QB8CGK as the central controller in small appliance controllers, motor or fan controls, sensor interfaces, LED lighting equipment, security panels, and low-cost industrial automation modules. The 24-HVQFN 5x5 mm package helps reduce board area, while embedded flash supports standalone firmware deployment. Designers should account for the exposed thermal-pad requirements and verify the exact pin assignment and pin functions against the NXP datasheet before layout. The primary design consideration is ensuring that the power supply, decoupling, clock configuration, programming interface, and exposed-pad layout follow the NXP reference design. Place the required supply capacitors directly at the appropriate power pins, provide a clean ground path, and connect the exposed pad using the recommended thermal and layout pattern. Confirm programming, reset, and debug connectivity before releasing a PCB for fabrication. This product page combines the manufacturer-associated device identity, distributor technical summaries, package details, practical application guidance, and same-family replacement analysis. It also highlights where engineers must verify detailed electrical limits, memory maps, peripheral behavior, and pin assignments directly in the NXP datasheet before final design approval.

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MC9S08QB8CTG - 8KB Flash 20MHz 8-bit S08 MCU | NXP | 16-TSSOP
MC9S08QB8CTG

MC9S08QB8CTG - 8KB Flash 20MHz 8-bit S08 MCU | NXP | 16-TSSOP

The NXP Semiconductors MC9S08QB8CTG is a compact, low-power 8-bit microcontroller built on the HCS08 CPU core, delivering up to 20 MHz CPU performance with 8 KB of on-chip flash memory and a 16-pin TSSOP (Tape and Reel) package. According to the manufacturer datasheet, this device is part of the S08QB family and is designed for energy-constrained embedded applications requiring deterministic 8-bit processing with minimal external component count. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, ROM/Flash, and a fixed set of peripherals (timers, ADCs, communication blocks) into one package. The S08QB belongs to the HCS08 (HCS08 Central Processor Unit) family, which uses a CISC instruction set with HC08 upward compatibility plus BGND (background debug mode) for non-intrusive in-circuit debugging. This class of MCU sits below 32-bit Cortex-M devices in the NXP portfolio and is positioned for cost-sensitive, ultra-low-power applications such as consumer appliances, sensor nodes, battery chargers, and human-interface modules. Key features include 8 KB flash program memory, 256 bytes of RAM, an internal clock source, multiple low-power stop and wait modes, and serial peripherals (SCI and SPI are typical of the family). The 20 MHz bus speed gives the device adequate headroom for modest sensor-processing and protocol-handling tasks while keeping active current low. A built-in 8-channel (family-typical) 10-bit ADC is available on most S08QB package options, enabling direct interfacing with analog sensors. The 16-pin TSSOP package makes the MC9S08QB8CTG pin-compatible with several S08QD and S08SH family variants, allowing PCB reuse across product tiers. Designers moving between S08QD/S08QB/S08SH benefit from a shared toolchain (CodeWarrior, NXP S08 SDK) and shared peripheral IP, which reduces firmware porting effort. Typical applications include white goods control boards (washing machines, dishwashers, microwave user interfaces), small motor control (low-end BLDC and brushed DC drivers), battery chargers, and remote-control transmitters. The wide operating voltage range (typical S08QB support: 2.7V-5.5V across -40C to +85C) makes the part drop-in friendly for both 3.3V and 5V rails. When designing with this device, ensure the supply decoupling network (typically 100 nF + 10 uF) is placed close to the VDD pin, route the BKGD pin to a debug header for in-circuit programming, and verify the TSSOP-16 thermal performance under sustained 20 MHz operation. Compared with the S08QD family, the S08QB has more flash (8 KB vs 4 KB) and a faster ADC conversion, making it a preferred choice when code size grows beyond the QD limit. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MC9S08QD2CSC - 8-bit MCU 2KB Flash 16MHz SOIC-8 | NXP (Tape & Reel)
MC9S08QD2CSC

MC9S08QD2CSC - 8-bit MCU 2KB Flash 16MHz SOIC-8 | NXP (Tape & Reel)

The NXP Semiconductors MC9S08QD2CSC is an 8-bit microcontroller unit (MCU) based on the S08 CISC core, delivering 16 MHz bus operation with 2KB (2K x 8) of Flash program memory, 128 bytes of RAM, and 4 general-purpose I/O lines in an 8-pin SOIC (0.154 in, 3.90 mm width) package. An 8-bit MCU is a single-chip computer that integrates a processor core, program and data memory, oscillators, timers, and peripheral functions such as ADC and communication interfaces. Within the power-management hierarchy of embedded systems, an MCU acts as the intelligent control element, replacing discrete logic and analog control circuits in cost-sensitive products. The S08 family is NXP (formerly Freescale) successor to the HC08 architecture, and the QD series is its minimum-pin-count, minimum-footprint derivative, packaged in surface-mount SOIC and MSOP outlines. Key features of the MC9S08QD2CSC include the low-pin-count 8-SOIC package that fits standard small-outline footprints, an internal oscillator that eliminates an external crystal for most applications, and operation from 3.3V or 5V supplies. The 2KB Flash is in-application reprogrammable, and 128 bytes of RAM support compact C or assembly firmware. The device suits applications where board area and BOM cost dominate, such as small appliance and motor control loops. Technically, the S08 core is a CMOS CISC processor with the HC08 instruction set extended by BGND and low-power wait/stop modes, providing 16 MHz bus speed with single-cycle most-instruction execution efficiency typical of 8-bit architectures. Integrated peripherals of the QD family typically include an 8-channel 10-bit ADC, 16-bit timers with PWM capability, and serial interfaces, allowing the 4 available I/O pins to be multiplexed flexibly. Typical applications listed for this device include DC cooling fan control in computers and low-power power supplies, battery chargers, capacitive discharge ignition (CDI) modules for motorcycles, and industrial compressor control. The 8-pin SOIC fits directly onto small motor driver or charger PCBs. Design consideration: verify supply-voltage margin and ADC pin multiplexing early, since only 4 I/O pins are available and Flash capacity is small; plan firmware within the 2KB limit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MC9S08QD2CSCR - 8-bit MCU 2KB Flash 16MHz SOIC-8 | NXP
MC9S08QD2CSCR

MC9S08QD2CSCR - 8-bit MCU 2KB Flash 16MHz SOIC-8 | NXP

The NXP Semiconductors MC9S08QD2CSCR is an 8-bit microcontroller unit (MCU) based on the S08 CISC core, delivering 16 MHz bus operation with 2KB (2K x 8) of Flash program memory, 128 bytes of RAM, and 4 general-purpose I/O lines in an 8-pin SOIC (0.154 in, 3.90 mm width) package. An 8-bit MCU is a single-chip computer that integrates a processor core, program and data memory, oscillators, timers, and peripheral functions such as ADC and communication interfaces. Within the power-management hierarchy of embedded systems, an MCU acts as the intelligent control element, replacing discrete logic and analog control circuits in cost-sensitive products. The S08 family is NXP (formerly Freescale) successor to the HC08 architecture, and the QD series is its minimum-pin-count, minimum-footprint derivative, packaged in surface-mount SOIC and MSOP outlines. Key features of the MC9S08QD2CSCR include the low-pin-count 8-SOIC package that fits standard small-outline footprints, an internal oscillator that eliminates an external crystal for most applications, and operation from 3.3V or 5V supplies. The 2KB Flash is in-application reprogrammable, and 128 bytes of RAM support compact C or assembly firmware. The device suits applications where board area and BOM cost dominate, such as small appliance and motor control loops. Technically, the S08 core is a CMOS CISC processor with the HC08 instruction set extended by BGND and low-power wait/stop modes, providing 16 MHz bus speed with single-cycle most-instruction execution efficiency typical of 8-bit architectures. Integrated peripherals of the QD family typically include an 8-channel 10-bit ADC, 16-bit timers with PWM capability, and serial interfaces, allowing the 4 available I/O pins to be multiplexed flexibly. Typical applications listed for this device include DC cooling fan control in computers and low-power power supplies, battery chargers, capacitive discharge ignition (CDI) modules for motorcycles, and industrial compressor control. The 8-pin SOIC fits directly onto small motor driver or charger PCBs. Design consideration: verify supply-voltage margin and ADC pin multiplexing early, since only 4 I/O pins are available and Flash capacity is small; plan firmware within the 2KB limit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MC9S08QD2MPC - 8-bit S08 MCU, 2KB Flash, 16MHz | NXP DIP-8
MC9S08QD2MPC

MC9S08QD2MPC - 8-bit S08 MCU, 2KB Flash, 16MHz | NXP DIP-8

The NXP (formerly Freescale) MC9S08QD2MPC is an 8-bit HCS08 microcontroller from the cost-effective S08QD family, the lowest-end member of the S08 architecture. It integrates 2KB of on-chip Flash, a 16MHz maximum CPU bus frequency, and 128 bytes of RAM inside a compact 8-pin PDIP through-hole package, running from a 2.7V to 5.5V supply. The device is specified for industrial-grade -40C to +85C operation and ships in tube packaging, making it ideal for cost-sensitive and small-form-factor designs. An 8-bit microcontroller (MCU) is a self-contained processor integrating a CPU, non-volatile program memory, RAM, and peripheral blocks on a single silicon die. The HCS08 core implements the classic HC08 instruction set with extensions such as BGND (background debug) and a single hardware breakpoint, providing a familiar, deterministic Von-Neumann architecture for embedded developers. Within the broader semiconductor taxonomy, an 8-bit MCU sits beneath 32-bit Cortex-M devices in capability and complexity, but remains highly competitive where deterministic GPIO, low cost, and minimal external parts dominate the design trade-off. Key features of the MC9S08QD2MPC include an integrated 4-channel 10-bit ADC for analog sensor acquisition, an internal clock source that eliminates the need for an external crystal in many designs, a robust watchdog timer with a dedicated internal oscillator for fail-safe operation, and six general-purpose I/O pins multiplexed with peripheral functions. The Flash memory supports in-application programming and in-circuit programming via the background debug mode (BDM), enabling field upgrades and simplified prototyping without removing the part from the board. On the architecture side, the S08QD family uses a CISC-style HC08 instruction set with bus speeds up to 16MHz (some variants specify 8MHz bus) and integrates a 2KB Flash array with security-lock bits to protect firmware IP. The device operates across 2.7V to 5.5V, supporting both 3.3V and 5V system rails, and includes an on-chip voltage regulator with brown-out reset to simplify power-tree design. The 8-pin PDIP package features a generous pin pitch that is friendly to hand prototyping and through-hole assembly in low-volume production. Typical applications include consumer appliance controllers, battery chargers, simple sensor interfaces, low-end motor and lamp controls, replacement of legacy HC08 and HC05 designs, and white-goods user-interface panels where only a handful of I/O pins and a small amount of program memory are required. The combination of internal clock, watchdog, and ADC typically reduces the bill of materials to just the MCU plus a bypass capacitor and a connector. When designing with the MC9S08QD2MPC, engineers should provide a 0.1uF decoupling capacitor as close to VDD/VSS as possible and may add bulk capacitance at the board supply input. Unused I/O pins should be configured as outputs or tied to defined logic levels to minimize supply current. BDM debug access requires the BKGD pin routed to a programming header for in-circuit firmware updates.

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MC9S08QD2MSC - 8-bit 16MHz 2KB MCU | NXP Semiconductors
MC9S08QD2MSC

MC9S08QD2MSC - 8-bit 16MHz 2KB MCU | NXP Semiconductors

NXP Semiconductors MC9S08QD2MSC is an 8-bit S08QD microcontroller with a 16 MHz maximum clock frequency, 2 KB of flash memory, and an 8-pin SOIC package. It is positioned as the lowest-end member of the S08 8-bit microcontroller architecture, providing a compact and cost-conscious platform for embedded control designs that do not require a high-pin-count MCU or extensive on-chip memory. The device is supplied in reel-reel packaging with a minimum package quantity of 2500 units. An S08QD microcontroller is a small, event-oriented embedded controller within the broader hierarchy of microcontrollers, embedded processors, and semiconductors. Its role is to execute firmware, read inputs, control outputs, and coordinate low-complexity peripheral functions. The 8-bit S08 CPU and 16 MHz operating rate make this device appropriate for compact products where a deterministic, straightforward control architecture is preferred over a higher-performance processor platform. The principal verified feature set includes 8-bit processing, 2 KB of program flash, a 16 MHz operating frequency, and an 8-pin SOIC package. These values define the part's strongest design positions: small control logic, compact PCB implementation, and low component cost. Because the verified product information does not expose RAM size, supply-voltage limits, GPIO count, ADC characteristics, or peripheral configurations, those attributes must be confirmed in the manufacturer datasheet before a design is released. The S08 architecture provides a dedicated hardware-debug-oriented development ecosystem and a compact instruction set suited to basic embedded control. Engineering use should account for the limited 2 KB flash allocation, which can constrain code size, lookup tables, and multi-function firmware. Firmware organization, bootloader requirements, and production programming method should therefore be evaluated early rather than after PCB layout is frozen. Typical use cases include simple appliance controls, small sensor-interface products, compact actuator controllers, low-pin-count embedded nodes, and cost-sensitive products where the 16 MHz S08 core provides sufficient execution speed. The 8-pin SOIC package simplifies hand assembly and automated assembly while supporting a modest number of external connections. The primary design consideration is memory availability. With only 2 KB of flash, modular firmware, extensive diagnostics, and multiple communication stacks may not fit. Designers should preserve pin-compatible PCB options, verify the final pin mapping and electrical limits from the NXP datasheet, and validate any production programming and debug configuration before volume manufacturing. This page consolidates verified manufacturer and distributor information, practical memory-planning guidance, package constraints, pricing context, and verified same-family replacement information that is not consolidated on a typical distributor listing.

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MC9S08QD2VPC - 8-Bit 16MHz 2KB Flash MCU | NXP
MC9S08QD2VPC

MC9S08QD2VPC - 8-Bit 16MHz 2KB Flash MCU | NXP

NXP Semiconductors MC9S08QD2VPC is an 8-bit S08 microcontroller with a maximum clock frequency of 16 MHz, 2 KB of internal Flash memory, and an 8-pin PDIP package. It operates from a 2.7 V to 5.5 V supply and uses the CISC-based S08 architecture with an 8 MHz bus frequency. The combination of 16 MHz processing capability, 2 KB of program Flash, and a through-hole 8-pin package makes this device suitable for compact embedded control systems that require straightforward firmware, external peripherals, and PCB-through-hole assembly. An 8-bit microcontroller is a programmable semiconductor containing a central processing unit, memory, input/output ports, and support logic on one integrated circuit. Within the product hierarchy, this device belongs to the embedded microcontroller class, combines an S08 CPU core with Flash program storage, and serves as the control element in a larger embedded system. Its small pin count makes it especially appropriate for simple appliances, sensor interfaces, compact instruments, and basic industrial controllers where system complexity is modest. Key device characteristics include a maximum operating frequency of 16 MHz, an 8 MHz bus, 2 KB of Flash memory organized as 2K x 8, and a stated 128 x 8 memory configuration. The 2.7 V to 5.5 V operating range supports both 3.3 V and 5 V systems. An 8-pin PDIP package also simplifies breadboard prototyping, through-hole inspection, and hand-repair workflows while providing a larger lead pitch than fine-pitch surface-mount packages. The S08 family uses a CISC instruction architecture and provides a compact platform for event-driven control applications. Operating the CPU at 16 MHz while using an 8 MHz bus provides a balance between processing headroom and simpler peripheral integration. Flash memory allows firmware to be retained in the device and programmed during manufacturing or subsequent updates. Exact RAM size, ADC resources, timer counts, and I/O assignments should be confirmed from the manufacturer datasheet before final hardware design. Typical uses include small motor or relay controllers, temperature and level sensing interfaces, LED status panels, simple keypads, low-speed communication nodes, and dedicated control boards for household or industrial equipment. The DIP format is particularly useful when a design must be manually assembled, prototyped rapidly, or serviced with through-hole components. It is less suitable when board area or mounting density is the primary constraint. Designers should reserve the device pins for power, ground, reset, programming, clock, and the required I/O functions according to the datasheet. Place bypass capacitance close to the supply pins, keep programming and debug connections accessible, and confirm all unused inputs have defined levels. Because detailed peripheral and timing parameters are not reproduced on this page, use the manufacturer datasheet as the controlling source for register definitions and electrical limits. This page combines the exact core specifications, package information, comparison points, and engineering guidance needed to evaluate the MC9S08QD2VPC. It also separates confirmed device data from parameters that require datasheet verification, helping designers select the MCU while avoiding unsupported assumptions about memory, conversion, timing, and environmental performance.

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MC9S08QD2VSC - 8-bit S08 MCU, 2KB Flash, 16MHz, SOIC-8 | NXP
MC9S08QD2VSC

MC9S08QD2VSC - 8-bit S08 MCU, 2KB Flash, 16MHz, SOIC-8 | NXP

The NXP MC9S08QD2VSC is an 8-bit HCS08-family microcontroller with 2KB Flash, 256B RAM, 16MHz CPU clock, and a 4-channel 10-bit ADC, housed in an 8-pin SOIC (SO-8) package. It is the cost-optimized entry point in NXP's S08QD series of low-end 8-bit microcontrollers and operates across 2.7V to 5.5V with 6 general-purpose I/O pins. An 8-bit microcontroller (MCU) is a small, self-contained computing system-on-chip built around an 8-bit central processing unit, integrating program memory, working RAM, I/O peripherals, timers, and analog blocks into a single silicon die. The S08QD family sits at the very bottom of NXP's HCS08 architecture tree (HCS08 -> S08 -> S08QD -> MC9S08QD2), positioned for cost-sensitive embedded control in appliances, white goods, sensor interfaces, and consumer devices. The CPU executes the HC08 instruction set (with the added BGND instruction for background debugging), giving it a broad installed-code base and tool support. Key features include 2KB of on-chip Flash (1.5KB usable with 0.5KB reserved for EEPROM-like emulation), 256 bytes of RAM, a 4-channel 10-bit analog-to-digital converter, up to 16MHz bus clock, and an asynchronous background debug interface. The device integrates a low-power wait and stop mode with wakeup from interrupts, plus internal pull-ups on selected I/O to reduce external component count. The 8-SOIC footprint keeps board area small for tightly-packed designs. Technically, the MC9S08QD2VSC builds on the same HCS08 core that powers higher-tier S08 devices, so engineers can move up the family (QD4, SH, QG, AC) for more memory or peripherals without rewriting code. An integrated voltage regulator and brownout detector simplify the analog supply chain, while the internal clock source option removes the need for an external crystal in cost-sensitive applications. Typical applications include small appliance control, BLDC motor commutation in fans and pumps, sensor conditioning, LED lighting controllers, and battery-powered consumer toys where low BOM cost and small footprint dominate the design. The 4-channel 10-bit ADC handles basic analog sensing without an external converter. A key design consideration is to plan I/O pin count early: only 6 GPIO pins are exposed on the 8-SOIC package, so designs needing more I/O should consider the larger S08QD4 in TSSOP-16 or migrate to the S08AC family. The internal oscillator is sufficient for most tasks, but timing-critical serial communication may require an external reference. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MC9S08QD4CPC - 16MHz 8-bit MCU 4KB Flash DIP-8 | NXP
MC9S08QD4CPC

MC9S08QD4CPC - 16MHz 8-bit MCU 4KB Flash DIP-8 | NXP

NXP Semiconductors MC9S08QD4CPC is an 8-bit S08QD microcontroller with an enhanced HCS08 core, 16 MHz maximum operating frequency, 4 KB internal Flash memory and an 8-pin DIP package. It is positioned as a low-cost member of the S08 8-bit microcontroller architecture for compact control systems that require modest processing performance, embedded program memory and mixed-signal measurement capability. An HCS08 microcontroller is an 8-bit embedded controller used to execute firmware, read inputs, control outputs and manage system timing. Within the hierarchy of embedded processing, the HCS08 core belongs to the 8-bit MCU family, while the MC9S08QD4 device adds Flash program storage, RAM, general-purpose I/O and an analog-to-digital converter. The MC9S08QD4 family is specifically described as the lowest-end member of the S08 8-bit architecture. The device operates at up to 16 MHz and contains 4 KB of Flash organized as 4K x 8. Cross-reference information also identifies 0.256 KB of internal RAM, a four-channel 10-bit A/D converter and six general-purpose I/O pins. These resources suit compact consumer products, simple industrial controls, digital keypads, small motor or relay controllers, and low-cost sensing nodes where a larger MCU would add unnecessary cost and board area. The MC9S08QD4CPC is packaged in DIP-8, making it useful for prototype boards, through-hole educational platforms and manually assembled control modules. Its small pin count keeps the device appropriate for applications requiring limited external signals. The enhanced HCS08 instruction set and background debugging support help developers inspect program execution, set breakpoints and use in-circuit debugging during firmware development. Designers should confirm the exact pin assignments, peripheral multiplexing, voltage limits, clock configuration and power requirements in the NXP MC9S08QD4 data sheet before laying out a PCB. For battery-operated or low-energy designs, verify current consumption in each operating mode and whether the chosen clock and peripheral configuration meet the available power budget. This product page brings together the NXP device identity, manufacturer data sheet, distributor listing and a practical comparison with the documented MC9S08QD4MPC variant. It is intended to help engineers confirm package, memory, clock and peripheral requirements before requesting a quote or beginning a design-in.

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MC9S08QD4CSC - 8-bit S08 MCU 4KB Flash 16MHz | NXP
MC9S08QD4CSC

MC9S08QD4CSC - 8-bit S08 MCU 4KB Flash 16MHz | NXP

The NXP Semiconductors MC9S08QD4CSC is an 8-bit S08 (HCS08) microcontroller IC running at up to 16 MHz bus speed, integrating 4 KB (4K x 8) of Flash memory, 256 bytes of RAM, and a 4-channel 10-bit ADC in an 8-pin SOIC package. An 8-bit microcontroller (MCU) is a single-chip computer that combines a processor core, memory, and peripherals on one die, sitting at the entry level of the embedded control hierarchy: MCU -> microcontroller unit -> embedded processor -> semiconductor IC. The MC9S08QD4 belongs to the low-cost, high-performance HCS08 family, the lowest-end member of the S08 8-bit architecture from Freescale Semiconductor (now NXP). Key features include the enhanced HCS08 CPU with the HC08 instruction set plus the added BGND instruction, a background debugging system supporting non-intrusive in-circuit emulation, and single-breakpoint capability (plus two additional on-chip breakpoints). The device operates from 3.3V or 5V supplies and provides 6 general-purpose I/O pins. Technical depth comes from the S08 CISC architecture, which delivers efficient code density for small embedded control tasks. The on-chip 10-bit ADC with 4 input channels enables direct analog sensor acquisition, while the background debug controller (BDC) allows flash programming and debugging through a single-wire interface, reducing development cost in space-constrained designs. Typical applications include small appliances, low-cost analog sensor nodes, battery chargers, small motor control, and industrial auxiliary control where an 8-pin footprint and minimal BOM count matter. The SOIC-8 package suits compact, surface-mount PCBs. Design consideration: this part is listed as End of Life (EOL) on the NXP product page, so new designs should evaluate remaining-lifetime sourcing and consider the MC9S08QD2 or automotive S9S08QD4 family members where available. This page synthesizes distributor availability data, the NXP MC9S08QD4 datasheet, drop-in family alternatives, and EOL lifecycle guidance not found on standard distributor listings.

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MC9S08QD4MPC - 8-bit HCS08 MCU, 4KB Flash, DIP-8 | NXP
MC9S08QD4MPC

MC9S08QD4MPC - 8-bit HCS08 MCU, 4KB Flash, DIP-8 | NXP

The NXP MC9S08QD4MPC is an 8-bit HCS08 microcontroller with 4 KB of on-chip Flash, 256 bytes of RAM, and a 16 MHz enhanced HCS08 CPU core, housed in an 8-pin PDIP (DIP-8) through-hole package. It belongs to the cost-effective S08QD family, the lowest-end member of the S08 8-bit microcontroller architecture, and integrates a 4-channel 10-bit ADC, an internal clock source, and a background debug module (BDM) for in-circuit programming and debugging. An HCS08 microcontroller is a low-power, enhanced 8-bit CPU core derived from the legacy HC08 instruction set with the addition of the BGND instruction for background debug mode and a CISC architecture. Microcontrollers in this class sit beneath the broader category of embedded microcontrollers, themselves a subset of microprocessors and integrated circuits, and are typically deployed as the primary system controller in cost- and power-sensitive appliances, sensors, and human-interface devices where a 32-bit core would be overkill. Key features include 4 KB of Flash program memory, 256 bytes of RAM, six general-purpose I/O pins, a 4-channel 10-bit successive-approximation ADC, and an on-chip clock generator that supports an external crystal or resonator. The CPU executes instructions from the HC08 instruction set augmented by BGND, runs at up to 16 MHz (8 MHz bus), and supports single breakpoint setting during in-circuit debugging plus two additional breakpoints in on-chip debug logic. Typical applications include white-goods and small appliance controls, toys, low-end consumer electronics, LED lighting controllers, and battery-powered sensor nodes. The DIP-8 package makes it suitable for prototyping, breadboarding, education, and low-volume production runs where through-hole assembly is preferred over surface mount. When designing with this part, ensure the supply voltage stays within the MCU's specified VDD range and that the background debug pins are reserved on the PCB for in-circuit programming access. The DIP-8 footprint is intentionally chosen for hand-solderable, hobbyist-friendly designs rather than high-density production. This page synthesizes distributor pricing, drop-in same-package alternatives within the S08QD family, and practical design notes not collected in any single manufacturer document.

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MC9S08QD4MSC - 8-bit S08 MCU 16MHz 4KB Flash | NXP
MC9S08QD4MSC

MC9S08QD4MSC - 8-bit S08 MCU 16MHz 4KB Flash | NXP

The NXP MC9S08QD4MSC is an 8-bit S08 (HCS08) microcontroller with a 16 MHz bus-clocked S08 core, 4 KB (4K x 8) of FLASH program memory, and 256 bytes of RAM, housed in an 8-pin SOIC package. As the lowest-end member of the S08 8-bit architecture, it targets cost-sensitive embedded control designs. An 8-bit microcontroller (MCU) is a single-chip computing device that integrates a processor core, memory, and peripherals on one die. Within the system hierarchy, the S08QD family sits below larger S08, S12 (HCS12) and 32-bit families in the NXP portfolio, offering minimal pin count and minimal BOM cost for basic control tasks where a full-featured MCU is unnecessary. Key features include the enhanced HCS08 CISC CPU operating at up to 16 MHz, 4 KB of in-system-programmable FLASH, a 4-channel 10-bit ADC, and 6 general-purpose I/O pins. Background debug communication remains possible in STOP mode when ENBDM is set, enabling non-intrusive debugging through the single-wire background debug interface without consuming on-chip resources. Architecturally, the MC9S08QD4 shares the S08 core used across the broader QD family (QD2 and QD4 variants), which means code developed for the QD2 scales upward to the QD4 with more FLASH. The internal oscillator options and low pin count reduce external component count, and the ADC supports basic analog measurement such as temperature, voltage, or trim-pot sensing in compact products. Typical applications include small appliance control, simple battery-charger supervision, low-end automotive and industrial auxiliary functions, and replacement of discrete logic with a programmable device. The 8-pin SOIC fits space-constrained and cost-reduced PCB layouts. Design consideration: this part is officially listed by NXP as End of Life, so new designs should plan a migration path or secure last-time-buy inventory; NXP indicates automotive-specific variants of the QD series use part numbers starting with "S" (e.g., S9S08QD4). This page synthesizes distributor availability data, drop-in family alternatives, and EOL cross-reference guidance not consolidated in the manufacturer datasheet.

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MC9S08QD4MSCR - 8-bit S08 MCU, 4KB Flash, 16MHz | NXP
MC9S08QD4MSCR

MC9S08QD4MSCR - 8-bit S08 MCU, 4KB Flash, 16MHz | NXP

The NXP MC9S08QD4MSCR is an 8-bit HCS08 microcontroller in the cost-effective S08QD family, offering 4KB of Flash program memory, 256B RAM, and a 16MHz CPU in a compact 8-pin SOIC package. It integrates a 10-bit ADC, multiple timers, and an internal clock source for BOM-minimized designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus, optimized for cost, deterministic real-time behavior, and low-power operation in embedded systems. Within the broader taxonomy, the MC9S08QD4MSCR belongs to the 8-bit MCU -> HCS08 family -> S08QD sub-family -> NXP Kinetis/Motorola legacy 8-bit MCU line -> microcontroller -> semiconductor. 8-bit MCUs are widely deployed in white goods, sensor interfaces, simple motor control, and automotive body electronics where cost per IO dominates over raw compute throughput. Key features include the HCS08 CPU core with the BGND instruction, 4-channel 10-bit ADC, two 16-bit timers (TPM1/TPM2), 8-pin SOIC small-footprint packaging, and an operating voltage range of 2.7V to 5.5V. The MC9S08QD4MSCR also includes an internal clock, low-voltage detect (LVD), and an SCI/UART interface for asynchronous serial communication. Multiple package and pin variants in the S08QD family enable pin-compatible scaling between 2KB, 4KB, and 8KB Flash densities. Architecturally, the device uses a Von Neumann bus with separate Flash and RAM regions, background debug mode (BDM) for in-circuit programming and single-breakpoint debugging, and a hardware interrupt controller. The 16MHz internal bus clock provides 1.5 MIPS/MHz performance, sufficient for state-machine control loops in cost-sensitive applications. Typical applications include automotive body controllers, sensor signal conditioning, low-end BLDC/PMSM motor drivers, replacement of discrete logic in appliance controls, and consumer IR/RF remote controls. The S08QD family is automotive-qualified (select S-prefix parts), making the platform a natural fit for under-the-hood and chassis-adjacent designs. When designing with the MC9S08QD4MSCR, allocate sufficient Flash for boot-loader or application code growth above the 4KB baseline. Decouple VDD/VSS with 100nF ceramic capacitors placed within 5mm of the package pins, and use the BDM interface for fast in-circuit programming during development. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes that complement the manufacturer datasheet, helping engineers rapidly evaluate the MC9S08QD4MSCR for new designs or as a second-source replacement for legacy 8-bit MCU sockets.

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MC9S08QD4VPC - 8-bit S08 MCU, 4KB Flash, 16MHz, DIP-8 | NXP
MC9S08QD4VPC

MC9S08QD4VPC - 8-bit S08 MCU, 4KB Flash, 16MHz, DIP-8 | NXP

The NXP MC9S08QD4VPC is an 8-bit S08QD family microcontroller featuring an enhanced HCS08 CPU core, 4 KB of on-chip Flash, 256 bytes of RAM, and 8 MHz internal bus operation, housed in an 8-pin PDIP package. It is the cost-optimized lowest-end member of the S08 8-bit microcontroller architecture, targeting space-constrained and price-sensitive embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a set of peripheral blocks into one package. The S08 core belongs to the Freescale/NXP HCS08 family, which uses a CISC instruction set with the legacy HC08 instruction set plus added BGND (background debug) support. The MC9S08QD4VPC operates from a 2.7 V to 5.5 V supply and integrates peripherals such as an analog-to-digital converter (ADC), timers, a multimaster I2C module, and an SCI/UART interface, making it suitable for simple control, sensing, and user-interface tasks. Key features of the MC9S08QD4VPC include 4 KB of Flash memory, 256 bytes of RAM, an 8 MHz bus frequency (16 MHz maximum internal CPU clock), a 4-channel 10-bit ADC, 6 general-purpose I/O pins, low-power stop and wait modes, and an on-chip background debug system that supports in-circuit debugging with a single breakpoint plus two more breakpoints in on-chip memory. The 8-pin PDIP (plastic dual in-line package) footprint simplifies hand-prototyping and through-hole assembly while keeping the bill of materials small. The device integrates an internal clock generator, a real-time interrupt (RTI) source, a keyboard interrupt (KBI) module on selected pins, and a programmable watchdog timer for safety-critical applications. Flash security prevents unauthorized memory reads, and the BGND instruction allows non-intrusive debug entry without disrupting the application. The architecture prioritizes deterministic behavior and low power consumption, making it well-suited to battery- or line-powered appliances. Typical applications for the MC9S08QD4VPC include low-end home appliances, motor-control signal conditioning, automotive body electronics sub-modules, lighting controls, sensor interfaces, and small consumer devices. It is commonly used where an 8-bit MCU with modest memory and peripherals is sufficient, and where an inexpensive PDIP-8 footprint accelerates prototyping or hand-rework. Designers should note that the 8-pin PDIP package exposes a limited I/O count (6 GPIO pins), which constrains simultaneous peripheral use. Pin functions must be multiplexed carefully between ADC, KBI, SCI, and timer resources. The internal clock accuracy may be insufficient for tight UART baud-rate matching in some applications, so an external crystal/oscillator option should be considered if timing precision is critical. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in a single source, supporting procurement and design engineers evaluating the S08QD family for cost-sensitive 8-bit applications.

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MC9S08QD4VSC - 8-bit S08 MCU 4KB Flash SOIC-8 | NXP
MC9S08QD4VSC

MC9S08QD4VSC - 8-bit S08 MCU 4KB Flash SOIC-8 | NXP

The NXP Semiconductors MC9S08QD4VSC is an 8-bit microcontroller unit (MCU) based on the enhanced HCS08 CISC core, operating at up to 16 MHz, with 4 KB of flash memory and 256 bytes of RAM, housed in an 8-pin SOIC (SOIC 8) surface-mount package. It integrates a 4-channel 10-bit ADC and 6 general-purpose I/O pins, making it one of the smallest members of the S08 architecture. An 8-bit microcontroller is an integrated circuit that combines a processor core, memory, and peripherals on a single chip, executing embedded control tasks in appliances, sensors, and small industrial systems. Within the hierarchy of embedded processors, the S08 family descends from the HC08 architecture and occupies the low-cost, low-pin-count end of NXP's 8-bit MCU portfolio, below devices such as the MC9S08DZ and MC9S08AW series. Key features of the MC9S08QD4VSC include the 20 MHz-capable HCS08 CPU with the added BGND background-debug instruction, on-chip background debugging (BDM) that eliminates the need for an external emulator, single-breakpoint in-circuit debugging, and internal oscillator options that reduce external component count. According to the NXP MC9S08QD4 data sheet, the QD family is the lowest-end member of the S08 8-bit architecture, aimed at cost-sensitive designs. Technically, the device pairs the CISC HCS08 core with flash-based program memory, allowing field reprogramming, and provides a 10-bit successive-approximation ADC suitable for reading sensors such as thermistors and potentiometers. Its 6 GPIO pins support direct LED drive, switch inputs, and simple serial bit-banged interfaces. Typical applications include small appliance control, low-end automotive sub-systems (automotive variants are ordered with S-prefixed part numbers such as S9S08QD4), battery chargers, and simple sensor nodes where pin count and cost dominate. Design consideration: because the MC9S08QD4VSC is an End-of-Life part per the NXP product page, new designs should plan a migration path to active S08/Kinetis devices or secure last-time-buy inventory. This page synthesizes distributor data, cross-reference information, and drop-in replacement guidance not found in the manufacturer data sheet.

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