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MC9S08PT32VQH - 8-bit S08 MCU 20MHz 32KB Flash 64-QFP | NXP
MC9S08PT32VQH

MC9S08PT32VQH - 8-bit S08 MCU 20MHz 32KB Flash 64-QFP | NXP

The NXP MC9S08PT32VQH is an 8-bit S08PT family microcontroller built on the HCS08 core, operating at up to 20 MHz with 32 KB of on-chip Flash program memory, packaged in a 64-pin QFP (14x14 mm). It integrates an LVD/POR, PWM, WDT, 57 GPIO, and the touch sensing interface (TSI), together with an EEPROM and a motor-control FlexTimer. An 8-bit microcontroller (MCU) is a microprocessor optimized for embedded control, integrating CPU, RAM, non-volatile program memory, and peripherals (timers, ADC, communication controllers) into a single chip. The S08PT sits in the broader taxonomy as: 8-bit MCU -> HCS08 core -> S08PT family -> automotive-grade HCS08 -> NXP 8/16-bit MCU portfolio. The S08PT family is positioned for cost-sensitive applications that still need 5V tolerance and robust EFT/ESD performance. Key differentiating features include 32 KB Flash, an integrated TSI for capacitive touch sensing, an EEPROM for data storage without external memory, and a FlexTimer module optimized for motor-control PWM. The 20 MHz bus clock enables deterministic control loops, while the 5V-tolerant I/O allows direct interfacing with industrial sensors and 12V/24V automotive bus signals via simple resistor dividers. Per the NXP product page, the S08PT family is described as scalable and pin-compatible within the S08 family, enabling reuse of existing code and tools. Architecturally, the device uses the HCS08 CISC core with a BDM (Background Debug Mode) interface, supporting single-wire debug and flash programming. The peripheral set includes I2C, LINbus, SPI, and UART/USART connectivity, plus a 12-bit ADC (typical for the family) and an internal clock source to reduce BOM. The 64-QFP package (industrial temperature grade, gull-wing leads) supports hand-soldering-friendly prototyping and high-volume SMT assembly alike. Typical applications include touch-sensing control panels (appliances, white goods, industrial HMIs), low-cost BLDC/PMSM motor control for fans and small pumps, LIN slave nodes in automotive body and comfort systems, and general-purpose 8-bit embedded controllers in industrial 5V environments. Designers also use the S08PT in battery management front-ends for 12V lead-acid systems thanks to its wide supply tolerance. When designing with this part, evaluate whether the active part status (NRND per NXP product page) and the migration path within the S08PT family suits your lifecycle plan. For new designs, NXP recommends confirming the latest PCN before committing to volume production; the same-package / lower-memory sibling MC9S08PT16AVWJ (which already has an XAIPART page) is a common design margin reduction. Ensure your BDM tool (e.g., P&E Multilink) matches the device derivative before code bring-up. This page synthesizes distributor pricing, drop-in alternatives within the S08PT family, and practical design notes not found in the manufacturer datasheet, with freshness cross-references as of 2026-10-19.

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MC9S08PT60AVLD - 8-Bit 20MHz 60KB Flash MCU | NXP
MC9S08PT60AVLD

MC9S08PT60AVLD - 8-Bit 20MHz 60KB Flash MCU | NXP

NXP Semiconductors MC9S08PT60AVLD is an 8-bit S08 microcontroller operating at up to 20MHz, with 60KB of Flash memory and integrated EEPROM, in a 44-pin LQFP package. It is designed for embedded automotive and industrial control systems requiring touch sensing, analog conversion, motor-control timing, serial communications, and flexible peripheral integration. The MC9S08 family is a group of 8-bit HCS08-derived microcontrollers within the broader embedded-processor and microcontroller hierarchy. These devices combine a compact CPU core, nonvolatile program storage, data EEPROM, timer modules, communication interfaces, analog peripherals, and interrupt-driven control in one integrated circuit. This integration reduces the number of external components required in compact control, sensing, and communication products. Verified product information identifies 60KB of Flash memory, 20MHz operation, 3.3V or 5V supply operation, a 44-LQFP package measuring 10mm by 10mm, LIN support, an integrated ADC, and a touch-sensing interface. The device also includes an EEPROM and a motor-control flex timer, according to the NXP product page and MC9S08PT60 series datasheet. These peripherals make the MCU useful where local sensing, actuator timing, diagnostics, and network communication must coexist in a modest control footprint. The 20MHz operating speed supports time-sensitive embedded tasks, while 60KB Flash provides room for application firmware, drivers, and configuration logic. The ADC enables analog measurements without a separate converter, and LIN support is valuable in distributed automotive and industrial networks. The touch-sensing interface can simplify touch-controlled user interfaces or proximity-sensitive products when configured with suitable external sensing hardware. Typical applications include automotive body and comfort modules, LIN-connected actuators, industrial control panels, touch interfaces, sensor nodes, and small motor-control systems. The 44-LQFP package exposes the required I/O and peripheral resources while remaining suitable for automated surface-mount assembly. Designers should use the MC9S08PT60 datasheet and reference manual for exact pin functions, electrical limits, memory-map details, and peripheral configuration. The main design trade-off is the device’s 8-bit architecture and fixed 60KB program-memory capacity. It is appropriate for compact embedded control rather than high-end connectivity, high-resolution signal processing, or applications requiring substantially more firmware. Accurate BOM and layout decisions should be based on the verified NXP documentation and the exact package pinout. This page consolidates the verified NXP product identity, distributor listings, package information, and application context into an engineering-oriented overview. It also identifies where additional device details, such as exact peripheral limits and pricing, must be confirmed rather than inferred.

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MC9S08PT60VLH - 60KB Flash 8-bit S08 MCU | NXP | 64-LQFP
MC9S08PT60VLH

MC9S08PT60VLH - 60KB Flash 8-bit S08 MCU | NXP | 64-LQFP

The NXP Semiconductors MC9S08PT60VLH is an 8-bit HCS08-family microcontroller featuring 60 KB of flash memory, an S08 core running up to 20 MHz, and a 64-pin LQFP (10x10 mm) package. According to the NXP MC9S08PT60 datasheet (Document Number MC9S08PT60 Rev. 6, 09/2019), this device integrates a touch-sensing interface (TSI), on-chip EEPROM, an FLL-based clock system, and a motor-control FlexTimer to simplify appliance, industrial, and human-interface designs while reducing system cost. An HCS08 microcontroller (MCU) is an 8-bit CISC Harvard-architecture device built around a low-power S08 CPU core, internal flash, RAM, EEPROM, and a rich set of on-chip peripherals including timers, ADC, and communication interfaces. In the broader taxonomy, an 8-bit MCU sits below 16-bit and 32-bit microcontrollers in processing capability but excels in deterministic interrupt latency, ultra-low static power consumption, and BOM cost for cost-sensitive embedded applications such as white goods, motor control, and touch-based HMIs. Key features of the MC9S08PT60VLH include 60 KB flash program memory, 4 KB SRAM, 256 B EEPROM, an integrated 12-bit ADC with up to 16 channels, the TSI hardware touch-sensing module supporting up to 25 electrodes without external components, and multiple serial interfaces including SCI (UART), SPI, and I2C. The wide 2.7 V to 5.5 V supply range supports both 3.3 V and 5 V system designs common in legacy industrial platforms. Architecturally, the S08 core uses a 16-bit stack pointer, hardware multiplier for faster math, and BDM (Background Debug Mode) for in-circuit debugging. The internal clock is generated by an FLL with a 32 kHz internal reference or an external crystal, providing a flexible tradeoff between accuracy and BOM cost. Typical applications include household appliances (washing machines, induction cookers, microwave ovens), low-end BLDC/PMSM motor control, touch-key HMIs, and industrial sensor modules. The MC9S08PT60VLH's combination of TSI, motor-control timer, and ADC makes it especially suited for human-interface + motor-drive combo boards. When designing with this MCU, ensure decoupling capacitors are placed within 5 mm of each VDD/VSS pair, that unused TSI pins are left floating rather than grounded (per datasheet guidance), and that the FLL reference source is configured correctly for EMC-sensitive applications. This page synthesizes distributor stock, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers shorten time-to-market for cost-sensitive 8-bit embedded designs.

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MC9S08PT8VLC-FR - 8-Bit 20MHz 8KB MCU | NXP
MC9S08PT8VLC-FR

MC9S08PT8VLC-FR - 8-Bit 20MHz 8KB MCU | NXP

The NXP Semiconductors MC9S08PT8VLC-FR is an 8-bit S08 microcontroller operating up to 20 MHz, with 8 KB of flash memory, 512 bytes of RAM, an integrated LCD driver, and on-chip debug in a 32-LQFP package. It is designed for cost-sensitive automotive and industrial embedded systems. The MC9S08PT8VLC-FR-FR ordering suffix identifies the reel-packed form of the MC9S08PT8VLC device. A microcontroller is a programmable semiconductor that integrates a CPU, memory, and peripherals into one component. The S08 MCU family provides an 8-bit processing platform for control logic, user interfaces, and embedded automation. Within the semiconductor hierarchy, this device is a microcontroller and embedded processor, connecting a CPU core, flash program memory, RAM, communication interfaces, timing modules, and user-facing peripherals on one integrated circuit. Key features include an 8-bit S08 CPU, 8 KB flash, 512 B RAM, operation up to 20 MHz, an integrated LCD driver, and on-chip debugging. The family also includes a touch-sensing interface, EEPROM capability, and a motor-control Flex Timer according to the available product information. These resources support local display control, debounced capacitive-key input, parameter storage, and periodic motor-control functions without requiring separate logic devices. The 32-LQFP package provides a conventional surface-mount format suitable for automated assembly and multilayer PCB construction. A third-party listing identifies the package as 32-LQFP at 7 mm by 7 mm, while the exact dimensions and pin assignments are not included in the supplied verified text. The device supports both 3.3 V and 5 V according to a verified distributor listing, but current, temperature, and detailed electrical limits require the official manufacturer datasheet. Typical uses include appliance and industrial user interfaces, touch-enabled control panels, small motor controllers, automotive interface modules, and compact embedded control products. On-chip debug helps development and field diagnostics without requiring a separate external debug interface. Firmware must still verify reset behavior, clock limits, peripheral pin multiplexing, LCD segment mapping, and the external components required by the selected board design. Designers should preserve the 32-pin land pattern and validate every signal against the official MC9S08PT8VLC data sheet before substitution. The available web results identify the family as scalable and pin-compatible, but they do not provide enough verified electrical detail to declare unrelated MCUs as drop-in replacements. A replacement must match package pins, voltage limits, clock requirements, memory map, peripheral functions, and firmware assumptions. This page consolidates the verified manufacturer identity, distributor specifications, sourcing links, and engineering cautions for the MC9S08PT8VLC-FR. It separates confirmed facts from missing datasheet parameters so procurement and design teams can evaluate the MCU without relying on guessed electrical values or unsupported replacement claims.

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MC9S08PT8VLD - 8-Bit 20MHz S08P MCU | NXP Semiconductors
MC9S08PT8VLD

MC9S08PT8VLD - 8-Bit 20MHz S08P MCU | NXP Semiconductors

The NXP Semiconductors MC9S08PT8VLD is an 8-bit S08P-series microcontroller with a 20 MHz maximum clock frequency, 8 KB of flash program memory, and a QFP package. It combines an embedded S08 core with touch-sensing, EEPROM, and motor-control timer capabilities for embedded control applications. The manufacturer identifies the device as NRND, meaning it is not recommended for new designs. A microcontroller is a programmable integrated circuit that combines a processor core, memory, and peripherals on one semiconductor die. The MC9S08PT8VLD belongs to the S08 family of 8-bit microcontrollers and is positioned within the broader hierarchy of embedded processors, microcontrollers, and semiconductor control devices. Its 5 V operating environment and reusable S08 core, intellectual property, and development tools support migration across related S08 products. The principal device characteristics include an 8-bit CPU, 20 MHz operating frequency, and 8 KB flash memory organized as 8K by 8 bits. Integrated touch-sensing interface support can reduce the component count of capacitive user-interface panels, while EEPROM provides nonvolatile storage for calibration, configuration, or product-specific parameters. The flexible timer and motor-control resources support deterministic control functions in appliance, user-interface, and industrial equipment. The MC9S08PT8VLD is designed for embedded systems where deterministic peripherals and compact control are more important than high processor bandwidth. Because it uses the S08 architecture, software can reuse established S08 code, peripherals, and tool workflows. Its 5 V family targets appliance and user-interface environments, and the manufacturer states that the scalable, pin-compatible MCU family supports straightforward migration between compatible S08 products. Typical applications include capacitive-touch control panels, appliance controllers, small motor-control systems, industrial user interfaces, and embedded products that need EEPROM-backed configuration. The integrated touch interface is useful when a PCB must detect user inputs through capacitive electrodes, while the motor-control timer simplifies deterministic switching tasks. Developers should still evaluate timer channels, I/O availability, and interrupt requirements for the specific product configuration. A key design consideration is the device's NRND lifecycle status. Existing products can continue using the MC9S08PT8VLD when its exact qualification, software, and supply requirements are satisfied, but new designs should evaluate the manufacturer-recommended successor and verify its electrical, pin, memory, peripheral, and software compatibility. Package documentation should also be checked against the specific ordering code because public listings describe its QFP variant inconsistently. This page organizes the verified device characteristics, lifecycle state, sourcing information, and engineering considerations into a practical engineering reference. It also distinguishes documented facts from missing technical details, helping designers assess fit, plan firmware reuse, and decide when an NRND device should be retained in an existing platform rather than selected for a new design.

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MC9S08PT8VTJ - 8-Bit 20MHz 8KB Flash MCU | NXP
MC9S08PT8VTJ

MC9S08PT8VTJ - 8-Bit 20MHz 8KB Flash MCU | NXP

NXP Semiconductors MC9S08PT8VTJ is an 8-bit S08PT microcontroller with 8 KB flash memory, a 20 MHz maximum clock, and a 20-pin TSSOP package. It is designed for cost-sensitive automotive and industrial applications that need flexible clock options and integrated analog functions. The device also includes a touch-sensing interface, EEPROM capability, and a motor-control flexible timer to reduce external circuitry and system cost. An 8-bit microcontroller is a compact embedded-control device designed to execute firmware, read inputs, control outputs, and manage system events in applications that do not require the processing throughput of a 32-bit MCU. Within the embedded-device hierarchy, this MCU belongs to the S08 family of 8-bit microcontrollers and combines general-purpose processing, memory, timer, analog, and communication peripherals in one integrated circuit. The primary advantage of the MC9S08PT8VTJ is the combination of 8 KB flash, a 20 MHz clock, and integrated control resources in a compact 20-TSSOP package. Flash supports nonvolatile program storage, while EEPROM provides nonvolatile storage for calibration, configuration, or runtime data when available on the device. The S08 core and flexible clock architecture allow designers to balance processing performance and power requirements according to the operating environment. Integrated analog and timing blocks reduce the need for separate components in control-oriented designs. The touch-sensing interface can evaluate capacitive touch electrodes, while the motor-control flexible timer provides dedicated timing functions for motor-control and related sequencing tasks. These peripherals are especially useful in compact automotive controls, industrial interfaces, appliance controls, and cost-sensitive embedded products. Typical uses include automotive body and control modules, industrial interface equipment, touch-controlled products, small motor controllers, and compact sensor-processing systems. For automotive designs, confirm the exact temperature range and qualification requirements for the selected ordering configuration before production release. For industrial systems, validate clock tolerances, reset behavior, and peripheral performance across the full operating environment. PCB layout should preserve short, controlled paths for power, ground, clock, and sensitive analog signals. Place decoupling capacitors close to the supply pins, provide a clean ground reference, and follow the package-specific land pattern in the manufacturer datasheet. Firmware development should also account for the 8 KB flash limit, interrupt timing, peripheral initialization order, and watchdog requirements. This product overview combines the manufacturer product description, distributor package and memory details, practical application guidance, and verified drop-in replacement analysis. It helps engineers identify whether the MC9S08PT8VTJ fits a compact 8-bit control design before starting layout and firmware development.

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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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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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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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