Microcontroladores

Produtos (19.000+)

MC9RS08KA8CWG - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP
MC9RS08KA8CWG

MC9RS08KA8CWG - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP

The NXP (formerly Freescale) MC9RS08KA8CWG is an 8-bit RS08KA-series microcontroller built around the RS08 core, featuring 8KB of on-chip Flash, 20 MHz maximum CPU frequency, and packaged in a 16-pin SOIC (SO16). It is designed as a cost-optimized, ultra-low-end general-purpose MCU for cost-sensitive embedded applications. According to NXP product information, this part is currently flagged for end-of-life discontinuance, with Rochester Electronics listed as a continuity source on DigiKey Marketplace. RS08 microcontrollers belong to the broader 8-bit MCU family and are derived from the legacy HC08 architecture via the simplified RS (Reduced State) core. The RS08KA family sits within the Freescale/NXP 8-bit portfolio, between simple 4/8-pin devices and the more feature-rich S08 family. Within the system hierarchy, an 8-bit MCU such as this sits at the sensing, control, and glue-logic layer of an embedded design - below 32-bit application processors and above purely analog components. The RS08 core drops some HC08 instructions and addressing modes in exchange for smaller die area and lower cost, while retaining a usable interrupt controller and peripheral set. Key features of the MC9RS08KA8CWG include 8KB Flash program memory, 20 MHz bus/Core clock (from an internal source with optional trimming), on-chip voltage regulator for wide 2.5 V to 5.5 V supply operation, multiple low-power stop modes, an integrated Analog-to-Digital Converter (ADC), timers, and a small set of GPIO pins suited to SOIC-16 board-level designs. The part ships in industrial temperature range (-40 °C to +85 °C or +105 °C per datasheet specifics) in a thru-hole-friendly SOIC-16 wide-body package. From an architecture standpoint, the device uses a Harvard-style 8-bit datapath with a 16-bit index register, 32 KB address space, and a vectored interrupt structure. The internal 1 kB RAM and 128-byte EEPROM/Flash-info area support small data tables and stack-intensive C programs via the Freescale/NXP CodeWarrior toolchain. An integrated brown-out detector and watchdog improve field robustness. Typical applications include household appliances, white goods user interfaces, low-end remote controls, small sensor nodes, LED driving boards, toys, and simple motor/relay controllers where cost is the dominant design constraint and 8-bit headroom is sufficient. When migrating designs, verify VDD tolerance, pinout, and ADC channel mapping against the latest MC9RS08KA8 datasheet (Rev. 4) because NXP has documented PCN-style changes that may differ from earlier revisions. RoHS status should be confirmed at order entry given the part's end-of-life notice. This page synthesizes distributor pricing, drop-in same-package alternatives within the RS08KA family, lifecycle notes, and practical design considerations that are not aggregated in any single manufacturer document.

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MC9RS08KA8CWJ - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP
MC9RS08KA8CWJ

MC9RS08KA8CWJ - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP

The NXP Semiconductors (formerly Freescale) MC9RS08KA8CWJ is an 8-bit RS08-family microcontroller with 8KB of on-chip Flash memory, a 20MHz CPU core, and a 20-SOIC Wide-body package. It targets ultra-low-end cost-sensitive applications using a streamlined subset of the HC08 instruction set augmented by a BGND background debug instruction, and offers 18 general-purpose I/O ports for flexible peripheral connectivity in compact designs. An 8-bit microcontroller (MCU) is an integrated circuit that combines a CPU, program memory (ROM/Flash), data memory (RAM), and various peripherals on a single die. The 8-bit RS08 core is a reduced-instruction-set derivative of the Freescale HC08 architecture, intentionally simplified to deliver HC08-compatible software behavior at a lower cost and smaller silicon area. MCUs like the MC9RS08KA8CWJ occupy the lowest tier of the microcontroller taxonomy - below 16-bit (MSP430, RL78) and 32-bit (Cortex-M0) devices - and are commonly used where cost and code density outweigh raw throughput. The RS08 family sits under NXP's broader 8-bit MCU portfolio and is positioned below S08, HCS08, and Coldfire V1 parts. Key features include 8KB of Flash program memory, up to 20MHz CPU clock, internal clock source option for BOM reduction, an integrated keyboard interface (KBI) for human-input applications, and a wide operating voltage range of 2.5V to 5.5V. The device supports 20-pin SOIC-Wide packaging, industrial temperature range of -40C to +85C, and is rated for tube-packaged shipping. Architecturally, the MC9RS08KA8CWJ uses the RS08 CPU core - a stripped-down HC08 subset - paired with Flash memory, RAM, on-chip debug, and a peripheral set including timers, KBI, ADC, and an internal clock source. The CPU executes a streamlined instruction set with most HC08 addressing modes retained, simplifying code porting from legacy HC08 designs while reducing die area. The 20MHz CPU drives up to 100ns instruction cycle times. Typical applications include cost-sensitive consumer appliances, low-end remote controls, simple sensor interfaces, KBI-equipped human-interface devices, and industrial controllers requiring minimal MCU capability. The integrated keyboard interface makes it well suited for matrix-scanned keypads. When designing with this device, prioritize firmware reuse from existing HC08 code where possible. Ensure the KBI pin assignments match the keypad matrix and consider external interrupt sources for wake-from-stop events. Use the internal clock source if BOM cost reduction outweighs timing accuracy requirements. This page synthesizes distributor pricing, drop-in KA-series alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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MC9RS08KB12CSG574 - 8-bit RS08 MCU, 12KB Flash, 20MHz | NXP
MC9RS08KB12CSG574

MC9RS08KB12CSG574 - 8-bit RS08 MCU, 12KB Flash, 20MHz | NXP

The NXP MC9RS08KB12CSG574 is an 8-bit RS08 microcontroller from the RS08KB family, featuring 12KB of Flash program memory and operating at up to 20MHz core frequency, housed in a 16-pin SOIC package. It belongs to NXP's (formerly Freescale's) ultra-low-cost RS08KB 8-bit MCU lineup, designed for cost-sensitive embedded applications requiring reliable Flash-based program storage and a compact footprint. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (typically Flash), data RAM, and peripherals such as timers, ADCs, communication interfaces, and GPIO onto one silicon die. The RS08 family is a reduced-instruction-set 8-bit core targeting ultra-low-cost applications, sitting beneath the HCS08 in NXP's 8-bit hierarchy but using a streamlined instruction set optimized for code density and small die area. The RS08KB series specifically integrates a peripheral set tuned for motor control, appliance, lighting, and consumer product designs. Key features of the MC9RS08KB12CSG574 include 12KB (12K x 8) of on-chip Flash memory, an 8-bit RS08 CPU core with interrupt capability, on-chip peripherals suitable for embedded control, and wide operating voltage support typical of the family. The device is intended for designers who need a Flash-based 8-bit MCU with sufficient code space for small to medium embedded applications, while keeping the bill-of-materials cost low. The 16-pin SOIC (Small Outline Integrated Circuit) package is a through-hole-replacement-style surface-mount package with 1.27mm pitch, offering a compact 3.9mm body width suitable for hand-solderable prototyping as well as high-volume reflow assembly. SOIC-16 is a broadly available, low-cost package stocked across virtually every distributor, simplifying both initial sampling and production ramp. Typical applications for the MC9RS08KB12CSG574 include small consumer appliances, white goods sub-modules, low-end remote controls, simple sensor signal conditioning, lighting ballast controls, battery chargers, and educational/development platforms that benefit from a free toolchain and minimal external component count. The Flash-based program memory allows in-system reprogramming via the standard background debug mode (BDM), enabling fast firmware iteration during development. When designing with this part, evaluate whether the peripheral set (timers, ADC channels, communication interfaces) meets the application's I/O and timing requirements before locking in the design. Designers should also confirm code-size headroom - 12KB accommodates small algorithms but may constrain complex state machines - and verify the available development tools (CodeWarrior for RS08, third-party IDEs) match their team workflow. This page synthesizes distributor availability across DigiKey, Mouser, Rochester Electronics, LCSC, and Octopart, alongside NXP product documentation, parametric comparison data, and drop-in alternative analysis not consolidated in any single manufacturer datasheet.

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MC9RS08KB12CWJ - 8-bit RS08 MCU, 12KB Flash, 20MHz | NXP SOIC-20
MC9RS08KB12CWJ

MC9RS08KB12CWJ - 8-bit RS08 MCU, 12KB Flash, 20MHz | NXP SOIC-20

The NXP MC9RS08KB12CWJ is an 8-bit RS08 microcontroller from the RS08KB family, featuring a 12KB flash memory, a 20MHz CPU clock, and operating voltage support at 2.5V/3.3V/5V in a 20-pin SOIC (SOIC 7.50 mm width) package. Originally released by Freescale Semiconductor (now part of NXP), this MCU is built around the RS08 core, which uses a subset of the HC08 instruction set with the added BGND (background debug) instruction for in-circuit debug and programming. RS08 microcontrollers represent an entry-level family within NXP's 8-bit portfolio, sitting in the hierarchy of microcontroller -> 8-bit MCU -> RS08 family -> small-flash KB series. They target cost-sensitive embedded designs where simple, deterministic instruction set execution, low pin count, and an integrated peripheral set are more important than 16- or 32-bit computational headroom. The RS08 core is engineered as an efficient companion to the legacy HC08, allowing legacy code reuse while reducing die size and cost. Key features include 12KB (12K x 8) of on-chip flash program memory, 126 bytes of RAM, an integrated analog comparator, an 8-bit timer with PWM capability, and support for multiple communication options through firmware. The single global interrupt vector, combined with fast interrupt entry/exit, simplifies firmware design for control loops and peripheral polling. The device operates across an extended voltage range and industrial temperature, making it suitable for automotive body controllers, appliance control boards, and industrial sensor interface modules. The architecture uses a streamlined Harvard-based path with a von-Neumann-style unified memory map. Its 20MHz internal bus, derived from an on-chip oscillator or external clock, allows the same instruction throughput per MHz as the legacy HC08, easing migration for engineers porting legacy HC08 code. Power management modes (WAIT and STOP) reduce average current in battery-powered or quiescent-duty applications such as remote controls or standby sensor boards. Typical applications include consumer appliance control panels, automotive interior lighting and HVAC actuators, small-format industrial sensors, and low-cost hobby/educational embedded platforms. The 20-SOIC package supports both hand-solderable prototyping and standard SMT production lines. When designing with this MCU, confirm available timer and ADC channels against the application requirement; the small pin count means peripheral multiplexing may be required for complex interfaces. Programming is supported via NXP's CodeWarrior IDE and the standard RS08 background-debug interface (BDM), with programming headers compatible with the wider Freescale/NXP 5V MCU family. This page synthesizes distributor pricing, verified lifecycle status, drop-in alternatives, and practical design notes that complement the manufacturer datasheet.

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MC9RS08KB4CSG - 8-bit RS08 MCU, 4KB Flash, 20MHz | NXP
MC9RS08KB4CSG

MC9RS08KB4CSG - 8-bit RS08 MCU, 4KB Flash, 20MHz | NXP

The NXP (formerly Freescale) MC9RS08KB4CSG is an 8-bit RS08 microcontroller (MCU) featuring 4KB of on-chip Flash memory, a 20MHz CPU clock, and a 16-pin SOIC package. It belongs to the RS08KB family of low-cost, low-power microcontrollers designed for cost-sensitive embedded applications, and operates across a 2.7V to 5.5V supply range. An 8-bit microcontroller is a single-chip computer that integrates a CPU, memory (Flash/RAM), and peripherals onto one silicon die. The RS08 core is a reduced-instruction-set variant of the HC08 core, offering a subset of the HC08 instruction set plus a BGND (background debug) instruction. The RS08KB sits within the broader taxonomy of 8-bit MCU -> microcontroller -> embedded processor -> semiconductor device. By keeping competitive low-cost, low-power 8-bit controllers, NXP targets white goods, simple sensors, and battery-operated devices where 32-bit Cortex-M MCUs would be overkill. Key features of the MC9RS08KB4CSG include 4KB (4K x 8) of program Flash, 126 bytes of RAM, an integrated analog-to-digital converter (ADC), timers, a serial communications interface (SCI), and an inter-integrated circuit (I2C) module. The device also includes an internal clock source, multiple I/O pins, and a low-power stop mode for energy-constrained designs. Its 5V tolerance and rugged I/O make it well suited for industrial and appliance environments. The RS08KB family eases migration by offering multiple package and flash size options, along with pin compatibility across other 5-volt NXP families and support for the CodeWarrior development toolchain. Compared with more powerful ColdFire or Kinetis ARM Cortex-M parts, the RS08 is intentionally lean: one global interrupt vector, fewer addressing modes, and reduced register file, all of which reduce die cost and code size for simple control loops. Typical applications for the MC9RS08KB4CSG include home appliances (washing machine user interfaces, microwave control panels), battery chargers, LED drivers, low-end toys, simple sensor signal conditioning, and small consumer electronics that require reliable 5V-tolerant digital control. The 20MHz CPU provides ample headroom for basic motor control loops, PWM generation, and UART-based communication with companion chips. When designing with this MCU, ensure the supply rail stays within 2.7V to 5.5V and respect absolute-maximum ratings on I/O pins. For applications that outgrow 4KB Flash, the family offers pin-compatible higher-density variants (KB8, KB12) and migration paths to the S08 and Kinetis families with the same peripheral IP and toolchain. This page combines verified distributor pricing, same-brand drop-in alternatives, and practical design notes not aggregated on the manufacturer product page.

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MC9RS08KB4CWJ - 8-bit RS08 MCU, 4KB Flash, 20MHz | NXP
MC9RS08KB4CWJ

MC9RS08KB4CWJ - 8-bit RS08 MCU, 4KB Flash, 20MHz | NXP

The NXP MC9RS08KB4CWJ is an 8-bit microcontroller built on the RS08 core, delivering 20 MHz CPU performance with 4 KB of on-chip Flash and 126 B of SRAM in a 20-pin SOIC (SOIC-20 wide-body) package. It targets cost-sensitive, low-power embedded control applications where simple deterministic behavior and a small PCB footprint are priorities. The part is part of the RS08KB family that extends the legacy HC08 instruction set with the BGND (background debug) instruction, easing migration for engineers familiar with the Freescale HC08 architecture. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash), working memory (RAM), and peripherals such as timers, communication ports, and analog blocks. The MC9RS08KB4CWJ belongs to the taxonomy: microcontroller -> 8-bit MCU -> RS08 core MCU -> RS08KB family -> low-cost general-purpose embedded controller. The RS08KB line sits at the entry level of NXP's 8-bit portfolio and is designed for fans, white goods, motor control, simple sensor readouts, and human-machine interface (HMI) edge nodes where 32-bit MCUs would be over-spec and unnecessarily expensive. Key features include 18 general-purpose I/O pins, a 16-bit timer/PWM module, an 8-bit analog-to-digital converter (ADC) on most family members, on-chip debug via background debug mode (BDM), and integrated peripherals including a real-time counter (RTC), watchdog timer (WDT), low-voltage detect (LVD), and power-on reset (POR). The device supports I2C and SPI connectivity for sensor and external peripheral interfacing, reducing external component count. The wide 2.5 V to 5.5 V operating range allows direct connection to 5 V rails or 2x AA / 3x AA battery stacks. Architecturally, the RS08 core implements a subset of the HC08 instruction set, retaining byte-efficient BCD and bit-manipulation operations favored in legacy 8-bit code while shrinking die area. The 20 MHz internal bus and 4 KB Flash enable small real-time control loops, while the 126 B SRAM is sufficient for modest state machines and protocol stacks (e.g., simple proprietary RF, sensor fusion at low sample rates). Typical applications include small appliance control (rice cookers, fans, blenders), LED drivers, battery chargers, low-cost remote controls, sensor interfaces, and 5 V industrial sensor conditioning. The on-chip peripherals (ADC, PWM, timers, I2C/SPI) enable single-chip solutions in space-constrained designs, eliminating external driver or decoder ICs. When designing with the MC9RS08KB4CWJ, place a 100 nF decoupling capacitor as close as possible to the VDD pin and a 10 uF bulk capacitor on the board supply. Keep the BDM debug header accessible during prototype bring-up - the RS08KB requires the BDM interface for programming and in-circuit debugging. This page synthesizes distributor pricing, drop-in alternatives within the RS08 family, and practical design notes not found in the manufacturer datasheet alone.

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MC9RS08KB8CTG - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP
MC9RS08KB8CTG

MC9RS08KB8CTG - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP

The NXP MC9RS08KB8CTG is an 8-bit RS08 microcontroller delivering 20 MHz CPU performance with 8 KB on-chip Flash and 16-pin TSSOP packaging. It targets cost-sensitive, low-pin-count embedded applications requiring a 5 V tolerant HC08-superset core. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and peripherals such as timers, ADCs, and communication interfaces. The MCU sits below microprocessors and above discrete logic in the embedded hierarchy, and the RS08KB family is a flash-based, low-pin variant within the broader Freescale/NXP 8-bit and 32-bit automotive and industrial MCU portfolio. Key features of the MC9RS08KB8CTG include an 8 KB Flash program memory, a 20 MHz RS08 core with BGND debug instruction, a single global interrupt vector, and operation across 2.7 V to 5.5 V supply range. The device integrates an analog-to-digital converter, timer modules, and serial communication blocks, supporting reduced system cost through peripheral integration. The TSSOP-16 footprint offers compact board placement suitable for space-constrained designs. The RS08 core is a reduced-instruction-set variant of the HC08 family, retaining code efficiency and toolchain familiarity while trimming die size. On-chip hardware breakpoints and the BGND instruction simplify in-circuit debug via standard RS08 background debug tools, lowering the engineering effort required for firmware bring-up versus pure software emulation. Typical applications include small home appliances, sensor interface modules, LED lighting controllers, low-end motor control signal boards, and industrial sensor hubs. The wide operating voltage and industrial temperature range suit automotive body and chassis subsystems as well as factory-automation peripherals. When designing with this MCU, ensure decoupling capacitors are placed close to the VDD pins and that unused pins follow the datasheet recommendations to avoid spurious interrupts. Migrating from larger RS08KB family members preserves pin compatibility when staying within the same package.

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MC9RS08KB8CWJ - 8-Bit 20MHz RS08 MCU | NXP Semiconductors
MC9RS08KB8CWJ

MC9RS08KB8CWJ - 8-Bit 20MHz RS08 MCU | NXP Semiconductors

The NXP Semiconductors MC9RS08KB8CWJ is an 8-bit RS08 microcontroller with a 20 MHz CPU, 8 KB of Flash memory, and a 20-pin SOIC package. It is designed for compact embedded-control designs that require efficient interrupt handling and a broad operating-voltage range. The supplied manufacturer and distributor data identify the device as an RS08KB-family MCU with 8K x 8 Flash memory. What is an RS08 microcontroller? An RS08 MCU is an 8-bit embedded microcontroller, a member of the broader microcontroller and semiconductor hierarchy. It combines a compact central processing unit with on-chip program memory, interrupt capability, and integrated peripherals. The RS08KB family is positioned for small control systems where low component count, deterministic control, and simple firmware execution are useful. Its 20 MHz CPU provides a higher operating speed than basic 8-bit devices while retaining the simplicity of the RS08 instruction set. Key verified features include an 8-bit CPU, operation up to 20 MHz, 8 KB Flash memory, 8K x 8 organization, a 20-pin SOIC package, and a stated 5.5 V maximum supply condition across the temperature range. The family description also identifies support for interrupt capability and compatibility with other 5 V families. These attributes make the MC9RS08KB8CWJ suitable for compact appliance controls, sensor-conditioning systems, simple motor-control functions, and low-cost embedded products. The MCU’s 8 KB Flash capacity is appropriate for moderate control firmware, while the 8-bit architecture simplifies resource budgeting and peripheral integration. The supplied sources identify the lifecycle as ACTIVE on one technical datasheet page, although the NXP product page contains an End of Life overview. Because lifecycle and procurement conditions can change, purchasing decisions should confirm current NXP or authorized-distributor status for the exact orderable MPN. When designing a board around the MC9RS08KB8CWJ, use the 20-pin SOIC footprint and verify every signal against the applicable datasheet pinout before layout. The device is intended for 5 V-oriented embedded systems; input levels, peripherals, clocking, programming, and decoupling must be designed around the verified electrical limits rather than inferred from generic 8-bit MCU conventions. This page consolidates the verified RS08KB specifications, sourcing links, lifecycle evidence, and engineering-oriented design cautions. It distinguishes known facts such as CPU speed, Flash size, package, and voltage information from unavailable details rather than estimating electrical values or package pin assignments.

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MC9RS08KB8CWJ574 - RS08 8-bit MCU, 8KB Flash, 20MHz | NXP
MC9RS08KB8CWJ574

MC9RS08KB8CWJ574 - RS08 8-bit MCU, 8KB Flash, 20MHz | NXP

The NXP (formerly Freescale) MC9RS08KB8CWJ574 is an 8-bit RS08KB-family microcontroller with 8KB of Flash program memory, housed in a 20-pin SOIC wide-body package, designed for cost-sensitive embedded control applications. It integrates an RS08 reduced-instruction-set core running at up to 20 MHz, alongside 8KB of on-chip Flash and supporting peripherals targeted at simple sensor conditioning, user-interface handling, and battery-powered appliance control. A microcontroller (MCU) is a single-chip processing element that combines a CPU, volatile and non-volatile memory, and a programmable peripheral set in one package. RS08 microcontrollers belong to the broader 8-bit MCU category and sit below 16-bit/32-bit MCUs in the processing-performance hierarchy; they are preferred when BOM cost, deterministic interrupt latency, and low static power are more critical than raw MIPS. The RS08KB family is purpose-built for ultra-low-cost designs and pairs the CPU with integrated analog and timer resources, removing the need for external glue logic. Key differentiating features include the 20 MHz maximum CPU clock, 8KB of Flash for application firmware and calibration data, multiple timers and a multi-channel 10-bit ADC for analog signal acquisition, plus flexible low-power modes optimized for battery-backed operation. The wide-body SOIC-20 footprint simplifies hand-prototyping and visual inspection, while the RS08 instruction set keeps code density tight, often eliminating the need for an external EEPROM. According to the manufacturer product family description, the RS08KB family uses an efficient core to support interrupt-driven designs that save both component cost and PCB area. Technically, the device leverages the HCS08-derived RS08 core, which is intentionally stripped of unused addressing modes to shrink silicon area and reduce leakage. Its 20 MHz bus rate, combined with single-cycle instructions in many cases, yields sufficient throughput for slow-loop control tasks such as PWM LED driving, thermostat regulation, and simple user-interface scanning. The integrated brown-out reset and watchdog extend system reliability in harsh electrical environments. Typical applications include white-goods and small-appliance controllers, IR remote-control transmitters, low-end consumer gadgets, battery chargers, simple sensor hubs, and educational/development platforms. Designers also use the RS08KB family in industrial control panels where deterministic behavior and inexpensive replacement parts are valued. When designing with this MCU, verify that the chosen in-circuit debugger and software toolchain (CodeWarrior or MCU Eclipse) support the RS08KB sub-family before committing to firmware development, because tool support differs across HCS08 derivatives. Ensure decoupling is placed within 5 mm of the VDD pin to suppress switching transients during Flash programming. This page consolidates distributor pricing, drop-in compatible alternatives, and practical design notes that complement the RS08KB family datasheet and help engineers evaluate the part quickly.

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MC9RS08LA8CFT - 20MHz RS08 MCU with 8KB Flash | NXP
MC9RS08LA8CFT

MC9RS08LA8CFT - 20MHz RS08 MCU with 8KB Flash | NXP

The NXP Semiconductors MC9RS08LA8CFT is an 8-bit RS08 microcontroller with 20 MHz processing, 8 KB of Flash program memory, 256 bytes of RAM, 31 I/O pins, and a 48-pin QFN exposed-pad package. It operates from 3.3 V or 5 V and is designed for cost-sensitive embedded systems requiring integrated LCD-driving capability. A microcontroller is a programmable system-on-chip that integrates a CPU, memory, input/output ports, and peripherals into one device. The RS08 family belongs to the 8-bit microcontroller hierarchy, where the CPU executes compact embedded-control firmware while interacting directly with sensors, displays, relays, and communication interfaces. The LA family specifically targets small appliances, medical equipment, and industrial or multi-market products. Verified device data identifies an 8-bit RS08 CISC core, 8 KB (8K x 8) Flash memory, 256 x 8 RAM, 31 I/O pins, a 20 MHz maximum speed, an internal oscillator, and a 48-VFQFN exposed-pad package. The integrated LCD driver and charge-pump capability support display-oriented designs while reducing external support circuitry. The verified snippets also identify 3.3 V/5 V operation and tray packaging. The 20 MHz RS08 core provides sufficient control bandwidth for keypad scanning, display updates, sensor acquisition, and state-machine-based appliance control. Its 8-bit architecture simplifies instruction handling and supports economical embedded firmware. Exact peripheral inventory, memory map, interrupt behavior, ADC information, and detailed electrical limits are not available in the supplied source snippets and should be confirmed in the manufacturer datasheet. Typical applications include small appliances, medical equipment, industrial control panels, and other multi-market embedded systems. The LCD-oriented integration is particularly relevant where a compact display, keypad interface, and local control logic are needed without relying on a higher-cost MCU. The exposed thermal pad improves heat transfer on multilayer PCBs when the device dissipates power. Designers should treat the part as an end-of-life MCU and verify availability before starting a new production design. Firmware, memory map, LCD segment configuration, bypass capacitors, oscillator settings, and exposed-pad soldering must follow the official datasheet. For new designs, assess current NXP or other MCU families rather than assuming this obsolete device is a safe long-term choice. This page combines verified manufacturer and distributor information, availability context, package details, and engineering cautions. It is intended to help engineers identify whether the MC9RS08LA8CFT fits an existing embedded design while clearly separating verified facts from parameters that require datasheet confirmation.

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MC9RS08LA8CLF - 8KB Flash 8-Bit RS08 MCU w/ LCD | NXP
MC9RS08LA8CLF

MC9RS08LA8CLF - 8KB Flash 8-Bit RS08 MCU w/ LCD | NXP

The NXP MC9RS08LA8CLF is an 8-bit RS08 microcontroller with an integrated segmented LCD driver, 8KB Flash program memory, and 256 bytes of RAM, offered in a 48-pin LQFP (7x7) package. It operates at up to 20 MHz CPU clock from a 2.7V to 5.5V supply, integrating peripheral functions that target small appliances, medical equipment, and industrial multi-market applications. The device exposes 31 general-purpose I/O pins and includes an internal oscillator for BOM reduction. An 8-bit microcontroller (MCU) is a small, self-contained computing core built around an 8-bit data path, flash program memory, on-chip RAM, peripherals, and I/O. MCUs form the bottom of the embedded-computing hierarchy: 8-bit core -> microcontroller -> embedded processor -> semiconductor. The RS08 family is a streamlined HC08 subset aimed at ultra-low-cost LCD applications with active power saving modes for battery operation. Key features include an 8-Bit RS08 Central Processor Unit running up to 20 MHz, 8KB (8K x 8) of Flash, 256 bytes of RAM, 31 I/O lines, and a segment LCD driver with integrated charge pump that supports bias-multiplexed glass up to 8x mode. The on-chip charge pump eliminates the need for an external LCD bias supply. An internal oscillator is provided; an external clock source is supported for applications requiring higher timing precision. The 48-LQFP package exposes the full peripheral set. The MC9RS08LA8CLF uses the proven RS08 core with a 16-bit-wide internal architecture for fast byte-level operations, single-cycle peripheral access, and a BDM (Background Debug Mode) interface for in-system programming and debugging. The integrated charge-pump LCD driver supports 4x40 segments at 3V or 8x40 segments at 5V via the segment/large-pin multiplex arrangement, enabling direct connection to display glass without external drivers. Typical applications include white-goods user interfaces, medical monitoring front panels, industrial HMI panels, low-cost metering instruments, and battery-powered sensor readouts with on-glass LCD readouts. The active-low reset, multiple stop/wait modes, and integrated RTCC make the part well suited to mains or battery powered appliances with energy-star compliance targets. When designing with this part, the LCD charge-pump capacitor values from the reference design must be observed for proper display contrast, and the on-chip Vlcd reference must be configured to the target display glass. Plan board layout to keep the charge-pump traces short, and use proper decoupling at Vdd/Vss to minimize LCD segment rail noise visible on the display. This page synthesizes drop-in compatible alternates (where they exist), lifecycle risk flags from NXP's End-of-Life notice, and engineering guidance sourced from the manufacturer datasheet and distributor inventory. Use the comparison table to confirm pinout and peripheral set matches before substituting in a board that uses the LCD driver.

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MC9RS08LE4CWL - 20MHz 8-Bit MCU with 4KB Flash | NXP
MC9RS08LE4CWL

MC9RS08LE4CWL - 20MHz 8-Bit MCU with 4KB Flash | NXP

The NXP Semiconductors MC9RS08LE4CWL is an RS08LE 8-bit microcontroller with a 20 MHz maximum CPU frequency, 4KB of Flash memory, and a 28-pin SOIC package. It is designed for cost-sensitive embedded products requiring a compact MCU, LCD-driver integration, and flexible low-voltage operation. A microcontroller is a programmable semiconductor system that integrates a CPU, memory, peripherals, and input/output interfaces on one chip. The MC9RS08LE4CWL belongs to the broader hierarchy of embedded MCU, 8-bit MCU, RS08 microcontroller, and integrated circuit. Its small memory footprint and integrated LCD-oriented features are useful for human-interface and control products rather than high-compute systems. The verified listing identifies an RS08 central processor unit, 8-bit data-bus width, 4KB Flash, and operation up to 20 MHz. Search results also identify a 2.7 V to 5.5 V supply range and a stated temperature range extending to 85°C. These parameters position the device for low-voltage embedded controls, display modules, appliance interfaces, and compact industrial or consumer products. The RS08 architecture provides a straightforward 8-bit execution platform for supervisory logic, keypad scanning, sensor reading, display updates, and basic motor or actuator control. Because the available verified data does not provide a complete peripheral inventory, detailed memory map, pin-level electrical limits, or LCD-segment count, those details must be checked against the manufacturer datasheet before a design is released. Typical applications include LCD-based keypads, small appliance controllers, sensor nodes, instrumentation panels, and compact embedded control boards. The 20 MHz maximum CPU clock supports responsive control-loop execution, while 4KB Flash limits firmware complexity; code size, boot behavior, and update requirements should therefore be reviewed early in the design cycle. For PCB design, confirm the exact 28-pin SOIC footprint, power decoupling, oscillator requirements, programming interface, and all LCD and I/O pin assignments from the datasheet. Do not substitute a similarly named RS08 or S08 device unless its package, pinout, memory map, voltage range, clocking, and peripheral functions have been verified as compatible. This product page consolidates the verified distributor descriptions, manufacturer datasheet link, package information, application guidance, and engineering cautions for engineers evaluating the MC9RS08LE4CWL.

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MC9S08AC128CFUE - 40MHz 128KB Flash 8-Bit MCU | NXP
MC9S08AC128CFUE

MC9S08AC128CFUE - 40MHz 128KB Flash 8-Bit MCU | NXP

The NXP Semiconductors MC9S08AC128CFUE is an 8-bit S08AC-series microcontroller with a 40 MHz maximum CPU frequency, 128 KB of internal Flash memory, and a 64-pin QFP package measuring 14 x 14 mm. It belongs to the Flexis MC9S08AC128 family and is designed for embedded control applications requiring broad digital I/O and analog conversion resources. An 8-bit microcontroller is a compact computer integrated on one semiconductor die, containing a CPU core, program Flash, RAM, peripherals, and input/output circuitry. The S08 architecture provides a deterministic, CISC-oriented control platform suitable for industrial equipment, consumer products, appliance controllers, and compact embedded systems. The AC family also provides pin-, peripheral-, and tool-compatibility pathways within the Flexis portfolio. The MC9S08AC128CFUE combines 128 KB of internal Flash with up to 40 MHz operation. Verified comparison data identifies an enhanced HCS08-based S08 CPU, 8 KB internal RAM, a 16-channel 10-bit ADC, and 54 general-purpose I/O pins. Its 3.3 V or 5 V typical operating-supply options and 2.7 V to 5.5 V operating range support both 3.3 V and 5 V system designs. The 64-QFP surface-mount package exposes substantially more interface options than smaller MCU packages, supporting multiple digital inputs and outputs alongside analog measurement. Arrow identifies the part as CISC architecture with an S08 core, 40 MHz maximum CPU frequency, an 8-bit data-bus width, and Flash program memory. The NXP product page reports that the AC series is part of the Flexis family and includes pin-compatible 8-bit and 32-bit device options. Typical uses include appliance and motor-control logic, factory automation modules, environmental monitoring controllers, sensor interfaces, and compact industrial controls. Designers should preserve the QFP land pattern, confirm the exact peripheral multiplexing of each pin, and validate the replacement firmware against the target device before production release. The principal design consideration is lifecycle risk: the NXP page labels this device end of life, while Arrow lists it as NRND. Existing embedded products may still use this MCU, but new production should confirm availability, migration options, and long-term supply before committing to the S08AC architecture. This page consolidates verified manufacturer and distributor information, package constraints, lifecycle signals, and engineering-oriented selection guidance. It is intended to complement—not replace—the complete MC9S08AC128 Series Data Sheet with design-oriented context.

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MC9S08AC128MFUE - 40MHz 128KB Flash MCU | NXP | Automotive
MC9S08AC128MFUE

MC9S08AC128MFUE - 40MHz 128KB Flash MCU | NXP | Automotive

The NXP Semiconductors MC9S08AC128MFUE is an 8-bit S08 automotive microcontroller with a 40 MHz CPU, 128 KB flash memory, 4 KB RAM, 38 I/O ports, and a 64-QFP package. It operates from 2.7 V to 5.5 V and is listed as active, providing a defined option for embedded automotive control systems. The manufacturer result describes integrated analog resources, while the distributor data identifies the device as an automotive-grade S08 MCU. A microcontroller is a programmable semiconductor that integrates a CPU, memory, peripherals, and I/O into one device. In the embedded-system hierarchy, this MCU belongs to the 8-bit microcontroller class, combines an HCS08 core with on-chip flash and RAM, and provides the control logic needed for sensors, actuators, communication interfaces, and safety-related automotive functions. Unlike a discrete processor design, an MCU consolidates the essential control elements into a compact surface-mount package. Key verified features include 128 KB of flash, 4 KB of RAM, a 40 MHz CPU clock, 38 I/O ports, and a 2.7 V to 5.5 V supply range. Flash supports nonvolatile program storage, while RAM provides working memory for firmware execution and data handling. The 40 MHz CPU clock supports faster control-loop execution than lower-clock 8-bit MCUs, while the 38 I/O ports provide substantial parallel connectivity for automotive peripherals. The package is reported as 64-QFP, with a 14 mm by 14 mm outline in one distributor listing. The device uses the HCS08 8-bit CPU architecture and is positioned for automotive embedded applications. The verified data confirms a 20 MHz internal bus frequency, which is distinct from the 40 MHz CPU specification. The 64-QFP gull-wing package is intended for surface mounting and provides external access to the device's I/O and supply pins. Exact peripheral assignments, electrical limits, timing characteristics, and temperature limits should be confirmed from the manufacturer data sheet before schematic capture. Typical uses include body and comfort-control modules, sensor aggregation units, actuator controllers, automotive interface modules, and compact electronic control units where an 8-bit architecture, flash memory, RAM, and integrated analog resources are sufficient. The MCU is also suitable for prototypes and production automotive-control boards that require a dedicated S08-compatible software and hardware platform. Designers should verify the exact 64-QFP pin assignment, power decoupling, clock configuration, reset behavior, programming interface, and required external passives against the manufacturer data sheet. This page combines verified distributor specifications, lifecycle information, datasheet links, and application guidance without inventing unavailable electrical details. The product information gain comes from separating verified device facts from unresolved parameters and connecting the MCU's memory, clock, package, and automotive positioning to practical embedded-system decisions.

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MC9S08AC128MLKE - 128KB Flash 8-bit S08 MCU | NXP
MC9S08AC128MLKE

MC9S08AC128MLKE - 128KB Flash 8-bit S08 MCU | NXP

The NXP MC9S08AC128MLKE is a member of the S08AC family of 8-bit microcontrollers featuring a 40 MHz HCS08 CPU core with 128 KB of embedded Flash and 8 KB of on-chip RAM, packaged in an 80-pin LQFP (14x14 mm) form factor. An 8-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU, memory, and peripherals. The S08 family is built around the HCS08 CPU, a CISC architecture optimized for low power and deterministic interrupt response. The MC9S08AC128MLKE belongs to the Flexis series of pin-compatible 8-bit/32-bit duos, allowing designers to migrate between 8-bit S08 and 32-bit ColdFire V1 devices on the same PCB footprint for scalability. Key features include 128 KB of Flash program memory with security, 8 KB of RAM, an internal 20 MHz bus, 38 GPIO pins, multiple serial communication interfaces (SCI, SPI, IIC), a 16-channel 10-bit ADC, timers including PWM, and a real-time counter. The supply voltage range of 2.7 V to 5.5 V supports both 3.3 V and 5 V system designs. The peripheral set is suited to embedded system designers balancing cost, power, and code density in industrial or consumer applications. Architecturally, the device uses a Von Neumann-style bus with a 20 MHz internal bus frequency derived from a 40 MHz CPU clock. The Flash controller supports in-application programming and EEPROM emulation, while the on-chip voltage regulator and power-management module reduce active and standby current. The integrated ColdFire-compatible interrupt controller and background debug module simplify firmware development and field updates. Typical end uses include desiccant-free home appliances, industrial control modules, smart sensor nodes, low-cost motor control, and battery-powered metering equipment. The 128 KB Flash and rich peripheral set also support protocol stacks for LIN-connected automotive body modules and small display controllers. When designing with this MCU, ensure the SWD/BDM debug interface is brought out to a header for in-circuit firmware updates. The internal 20 MHz bus must be respected when configuring peripheral clocks, and unused GPIO should be configured as outputs to minimize current draw. Designers should also note that the device is in NXP's End-of-Life notice cycle and should plan LONIER alternative sourcing using other members of the S08AC family. This page synthesizes distributor pricing, drop-in S08AC family alternatives, and practical design notes not found in the standalone datasheet, helping engineers evaluate pin-compatible replacements for EOL planning.

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MC9S08AC16CFDE - 8-bit S08 MCU 16KB Flash 40MHz QFN-48 | NXP
MC9S08AC16CFDE

MC9S08AC16CFDE - 8-bit S08 MCU 16KB Flash 40MHz QFN-48 | NXP

The NXP Semiconductors MC9S08AC16CFDE is an 8-bit microcontroller unit (MCU) based on the HCS08 (S08) CISC core, running at up to 40 MHz with 16 KB of Flash memory and 4 KB of RAM, housed in a 48-pin QFN with exposed pad (48-QFN-EP, 7x7 mm) package. Supply voltage spans 2.7 V to 5.5 V, and the device provides 38 general-purpose I/O lines. An 8-bit MCU is a single-chip computer whose CPU processes data 8 bits at a time. Within the embedded hierarchy, the MC9S08AC16CFDE belongs to the HCS08 family, a lineage of low-cost, high-performance 8-bit MCUs originally developed by Freescale Semiconductor (now part of NXP). MCUs of this class sit below 16-bit and 32-bit controllers in compute power but offer lower cost, simpler tooling, and strong EMC behavior, making them the workhorse of high-volume embedded control. Key features include the 40 MHz S08 bus-capable CPU, in-circuit, in-application programmable Flash (16 KB), 4 KB of on-chip RAM for variables and stack, a 2.7 V to 5.5 V single-supply operating range, and 38 general-purpose I/O ports for button matrices, relay drives, and serial peripherals. The AC family is the third family in the Flexis series and is pin-compatible with 32-bit device duos, offering an upgrade path to ColdFire-class performance without a PCB redesign. Architecturally, the S08 core uses CISC-style instructions with an enhanced stack pointer, background debug mode (BDM) via a single pin, and integrated system peripherals typical of the AC family including timers and ADC (per the manufacturer datasheet for detailed peripheral counts). The exposed-pad QFN package provides excellent thermal performance and low inductance for EMI-sensitive designs. Typical applications include small appliance and home automation control, automotive body electronics, battery chargers and power supplies, and industrial sensor nodes where a 5 V tolerant, low-cost MCU is required. When designing with this part, note the NXP product page lists the device as End of Life; plan a last-time-buy or select a drop-in family variant for new designs. This page synthesizes verified distributor data, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet.

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MC9S08AC16CFGE - 8-bit 40MHz 16KB Flash MCU | NXP | LQFP-44
MC9S08AC16CFGE

MC9S08AC16CFGE - 8-bit 40MHz 16KB Flash MCU | NXP | LQFP-44

The NXP MC9S08AC16CFGE is an 8-bit HCS08-family microcontroller featuring a 40 MHz CPU core, 16 KB of on-chip Flash memory, and 38 general-purpose I/O pins, housed in a 44-pin LQFP package with 10x10 mm body. Operating from 2.7 V to 5.5 V, the part integrates the S08 central processor with a 20 MHz internal bus, supporting embedded control applications that require deterministic 8-bit performance, low power, and a rich peripheral set. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, and peripherals such as timers, ADCs, and communication interfaces. The 8-bit MCU category sits at the low end of the embedded hierarchy - below 32-bit Cortex-M and RISC-V parts but with simpler toolchains and lower unit cost. The HCS08 is NXP/Freescale's enhanced 8-bit core succeeding the legacy HC08 architecture; it adds a Background Debug Mode (BDM), improved instruction set, and ultra-low-power wake-up features that make it attractive for battery and industrial sensing designs. Key features of the MC9S08AC16CFGE include 16 KB Flash organized as 16K x 8, an internal bus frequency of 20 MHz, integrated timers, multiple serial communication modules (SCI/SPI/IIC), 12-bit or 10-bit ADC channels, and an operating temperature range suitable for industrial embedded use. The part belongs to the AC family of pin-compatible 8-bit and 32-bit Flexis-series devices, allowing migration to higher-performance ColdFire devices without PCB rework. Architecturally, the HCS08 core uses a von Neumann memory map with a 16-bit stack pointer and a compact instruction set optimized for code density. Internal clock sources include an FLL-stabilized internal reference, allowing the 40 MHz CPU to operate without an external crystal when EMI constraints permit, simplifying BOM cost. Typical applications include industrial control panels, appliance motor control, smart metering, sensor interface modules, USB/HID bridges, and low-cost consumer devices. Designers use this MCU where 8-bit simplicity, deterministic interrupt response, and low active power outweigh the throughput of a 32-bit part. Design consideration: ensure the BDM (Background Debug Mode) pins are accessible on the PCB for in-system programming and debug. Route the internal oscillator trim carefully if the application is sensitive to UART baud-rate error. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design considerations not assembled in the manufacturer datasheet, optimized for engineers selecting or replacing this part.

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MC9S08AC16CFJE - S08 8-bit MCU 40MHz 16KB Flash LQFP-32 | NXP
MC9S08AC16CFJE

MC9S08AC16CFJE - S08 8-bit MCU 40MHz 16KB Flash LQFP-32 | NXP

The NXP MC9S08AC16CFJE is an 8-bit S08 (HCS08) microcontroller featuring a 40 MHz CPU with 20 MHz internal bus frequency, 16KB of Flash program memory, and a 32-pin LQFP (7x7 mm) package with gull-wing terminals. It operates from a single supply of 2.7V to 5.5V and provides up to 38 general-purpose I/O lines depending on pin allocation. An 8-bit microcontroller (MCU) is an integrated circuit that combines a processor core, memory (Flash, RAM), and peripherals such as timers, serial interfaces, and ADCs on a single chip. Within the embedded systems hierarchy, the S08 family sits in the cost-sensitive control segment alongside Microchip PIC16, Renesas RL78, and STMicroelectronics STM8 devices. The AC family is the third family in NXP's Flexis series, offering pin-compatible 8-bit and 32-bit device duos that enable migration between S08 and ColdFire V1 cores without PCB redesign. Key features of the MC9S08AC16CFJE include the enhanced HCS08 CPU core, UART, SPI, and I2C serial communication interfaces, an analog-to-digital converter, and multiple timer/PWM modules, making it suitable for general-purpose embedded control. The wide 2.7V to 5.5V operating range allows direct connection to 3.3V or 5V rails, simplifying power design in industrial environments. Architecturally, the device is part of the low-cost, high-performance HCS08 family, which uses background debug mode (BDM) for non-intrusive flash programming and debugging without consuming on-chip resources. The Flash memory supports in-circuit reprogramming, enabling field firmware updates. Typical applications include industrial control systems, home appliances, motor control, battery chargers, and automotive body electronics. The rich peripheral set and wide voltage range make it a strong fit for noise-tolerant industrial nodes. A key design consideration is lifecycle status: NXP lists this part as End of Life, so new designs should plan migration to a recommended replacement or secure sufficient inventory for the production lifetime. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, verified as of 2026-10-18.

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MC9S08AC16MBE - 8-Bit 40MHz HCS08 MCU 16KB Flash | NXP
MC9S08AC16MBE

MC9S08AC16MBE - 8-Bit 40MHz HCS08 MCU 16KB Flash | NXP

The NXP MC9S08AC16MBE is an 8-bit microcontroller from the HCS08 AC family, featuring a 40 MHz HCS08 CPU with 20 MHz internal bus frequency, 16 KB of on-chip Flash, and 1 KB of RAM, housed in a 42-pin SPDIP (DIP-42) through-hole package. It is part of the Flexis series, designed as a pin-compatible 8-bit/32-bit duo, allowing easy migration from HCS08 to ColdFire V1 devices on the same PCB. The MC suffix in the part number designates the 42-pin SPDIP package option. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, peripherals, and I/O. The HCS08 is an 8-bit CISC core, second-generation of the HC08 family, with a BME (bit manipulation engine), BDC (background debug controller), and on-chip ICE (in-circuit emulation) support. The MC9S08AC16 belongs to the broader S08AC sub-family in the S08 (Scalable 8-bit) product hierarchy of NXP/Freescale microcontrollers. It is engineered for cost-sensitive embedded applications requiring deterministic low-power behaviour and small form-factor through-hole assembly. Key features include 16 KB Flash, 1 KB RAM, 38 general-purpose I/O pins, an internal 8-channel 10-bit ADC, two SCI (UART) modules, one SPI module, one I2C module, two TPM (Timer/PWM) modules with up to 6 channels, an internal clock source (ICS) with FLL, and a low-power STOP/WAIT modes. The supply voltage operates over 2.7 V to 5.5 V. The device also features an on-chip voltage regulator and brown-out detection for robust operation. The HCS08 core uses a von Neumann architecture with a single linear 16-bit address space shared between code and data. Flash is in-lipage mode and self-timed; in-application programming is supported through a ROM-resident Flash routine. The integrated ICS module with FLL provides a low-jitter 20 MHz bus clock from a 32 kHz reference or external crystal, eliminating the cost of an external oscillator in many designs. Typical applications include industrial control modules, home appliances, motor control (small BLDC/PMSM drivers), HVAC fan controllers, smart meters, low-end point-of-sale terminals, sensor hubs, and legacy industrial replacements. The DIP-42 footprint makes it especially suited for prototyping, breadboards, and through-hole production assemblies. When designing with this device, ensure decoupling of VDD/VSS pairs near each supply pin with a 100 nF ceramic capacitor. Use a 10 uF bulk capacitor near the MCU. Configure the SOPT1 register to enable the internal pull-ups on RESET and BKGD pins to avoid false resets during power-up. For STOP mode wake-up, ensure the RTC or external interrupt source is properly configured. This page synthesises distributor pricing, drop-in compatible alternatives, and practical design notes not found in the bare manufacturer datasheet.

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MC9S08AC16MFDE - 8-bit S08 MCU, 16KB Flash, 40MHz | NXP
MC9S08AC16MFDE

MC9S08AC16MFDE - 8-bit S08 MCU, 16KB Flash, 40MHz | NXP

The NXP MC9S08AC16MFDE is an 8-bit HCS08 microcontroller from the S08AC family, featuring 16KB of on-chip Flash memory, 40MHz CPU clock speed, and 38 general-purpose I/O pins in a 48-pin QFN-EP (7x7 mm) package with exposed thermal pad. The device operates from a 2.7V to 5.5V supply and delivers up to 20MHz internal bus frequency, making it suitable for automotive and industrial embedded control. What is an 8-bit microcontroller? An 8-bit MCU (microcontroller) is a compact computing device that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals on a single silicon die. Within the broader taxonomy, an 8-bit MCU is a type of microcontroller, which belongs to the embedded processor family, semiconductor category. The S08 core is Freescale/NXP's updated 8-bit architecture succeeding the HC08, featuring a background debug module (BDM), hardware multiplication/division assistance, and enhanced low-power modes that improve code density and energy efficiency over earlier 8-bit cores. Key features of the MC9S08AC16MFDE include 16KB Flash program memory, 1KB RAM, an internal clock generator supporting 20MHz bus frequency from a 40MHz CPU source, multiple timers (TPM1/TPM2), an analog-to-digital converter, and an SCI/SPI/I2C communication suite. The QFN-48 exposed-pad package supports efficient thermal dissipation in space-constrained PCB layouts while exposing 38 GPIO lines plus dedicated peripheral pins. The device targets cost-sensitive, deterministic control applications where 32-bit MCUs would be over-spec and where industrial temperature range and EMC robustness are required. Its enhanced HCS08 core executes most instructions in 1-2 bus cycles and includes a BDM interface for in-circuit debug and Flash programming without requiring the target application to be running. Typical applications include automotive body electronics (seat controllers, mirror modules, lighting controls), industrial motor control and HMI panels, white goods motor drivers, sensor signal conditioning nodes, and low-end consumer appliances. The wide 2.7V-5.5V supply range supports both 3.3V and 5V system rails, and the industrial temperature range of -40C to +125C enables under-hood and factory-floor deployments. When designing with this MCU, allocate the exposed thermal pad to a continuous ground copper pour to maintain junction temperature under high GPIO switching loads. Enable the internal voltage regulator bypass capacitor and reserve the PTA4/TCLK1 pin for BDM debug access during prototype bring-up. This page synthesizes pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for sourcing, second-sourcing, and implementing the MC9S08AC16MFDE in production designs.

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MC9S08AC16MFGE - S08 8-bit MCU 16KB Flash 40MHz LQFP-44 | NXP
MC9S08AC16MFGE

MC9S08AC16MFGE - S08 8-bit MCU 16KB Flash 40MHz LQFP-44 | NXP

The NXP MC9S08AC16MFGE is an 8-bit HCS08 microcontroller featuring 16 KB of Flash, 1 KB of RAM, a 40 MHz CPU core, and a 44-pin LQFP (10x10 mm) package. It operates from a 2.7 V to 5.5 V supply and integrates a 10-bit ADC, multiple timers (TPM), and serial peripherals (SCI, SPI, I2C) for embedded designs. An 8-bit microcontroller (MCU) is a small, low-power processor that integrates CPU, memory, and peripherals on a single silicon die. Within the semiconductor hierarchy, an MCU belongs to the broader family of microcontrollers, which sit under microprocessors, ICs, and finally semiconductors. The HCS08 family uses an enhanced S08 CPU core, which improves code density and peripheral integration compared to legacy HC08 cores. Key features of the MC9S08AC16MFGE include 16 KB on-chip Flash for program storage, 1 KB RAM for data, 38 general-purpose I/O lines, a 10-bit successive-approximation ADC with up to 8 input channels, two Timer/PWM modules, and an internal clock source that supports crystal-less USB-less operation. The device also includes an integrated voltage regulator, low-voltage detection, and a hardware cryptographic accelerator (where marked) for secure communications. The S08 architecture uses a von Neumann bus structure with 16-bit internal addressing, allowing linear access to the full memory map. The 40 MHz bus speed (20 MHz core with 2:1 pipeline) gives roughly 1.25 MIPS/MHz efficiency, suiting cost-sensitive control loops. The LQFP-44 package provides an industry-standard 0.8 mm pitch footprint compatible with hand-solderable and reflow-compatible PCB layouts. Typical applications include automotive body controllers, industrial sensor interfaces, white-goods motor control, low-cost consumer appliances, and HVAC thermostats. Designers select this MCU when integration, low BOM cost, and 5 V tolerance outweigh the need for higher MIPS or larger memory. When designing with this device, allocate adequate decoupling (0.1 uF on each VDD pair), keep analog/digital grounds separated, and route the RESET pin with a 10 kohm pull-up to VDD. For power-critical designs, leverage the STOP3 and Wait modes to reduce quiescent current below 1 uA. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a stock NXP or DigiKey product summary alone.

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MC9S08AC16MFJE - 40MHz 16KB 8-Bit MCU | NXP
MC9S08AC16MFJE

MC9S08AC16MFJE - 40MHz 16KB 8-Bit MCU | NXP

The NXP Semiconductors MC9S08AC16MFJE is an 8-bit S08 microcontroller operating at up to 40 MHz, with 16 KB of Flash program memory and up to 1 KB of RAM, packaged in a 32-LQFP 7 mm × 7 mm. It is designed for compact embedded-control systems where deterministic processing, mixed-signal peripherals, and a low pin count are valuable. An 8-bit microcontroller is a programmable semiconductor containing a CPU core, memory, I/O ports, timers, communication interfaces, and other peripherals on one integrated circuit. The S08 family belongs to the HCS08 lineage of 8-bit MCUs and is commonly used for appliance controls, industrial modules, automotive functions, and small control boards where an efficient core and dedicated peripherals are more useful than a high-complexity processor. The verified product information identifies a 40 MHz S08 core, 16 KB Flash memory, 4 KB RAM according to Mouser, 2.7 V to 5.5 V supply voltage, I2C, SCI, SPI, PWM, watchdog, low-voltage detection, and power-on reset. The package information is consistently identified by distributor listings as 32-LQFP, although one secondary result contains conflicting package metadata; the manufacturer and distributor package designation should be checked against the purchased ordering code. The MC9S08AC16 family is positioned for cost-sensitive automotive and industrial control applications, as described on the NXP product page. Its Flash memory supports in-system firmware storage and updates, while serial interfaces enable connection to sensors, actuators, external memory, and service equipment. The 2.7 V to 5.5 V operating range accommodates regulated 3.3 V and 5 V systems when the individual peripheral and electrical limits are satisfied. For new designs, engineers should confirm the exact pin assignments, multiplexing options, memory organization, clock configuration, electrical limits, and package drawing from the official NXP or Freescale datasheet before layout release. The MFJE suffix and 32-LQFP footprint should be treated as essential ordering and PCB-matching identifiers. A typical implementation places the MCU beside a regulated supply, decoupling capacitors, sensor interfaces, and a communication transceiver or connector. Firmware configuration should verify oscillator start-up, watchdog behavior, interrupt priorities, unused-pin handling, and peripheral pin multiplexing before production. This product page consolidates distributor specifications, manufacturer lifecycle information, package details, sourcing context, and engineering considerations. It does not invent electrical values, pin names, or replacement parts that are absent from the supplied verified data.

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MC9S08AC32CFDE - S08AC 8-bit MCU, 32KB Flash, 40MHz, QFN-48 | NXP
MC9S08AC32CFDE

MC9S08AC32CFDE - S08AC 8-bit MCU, 32KB Flash, 40MHz, QFN-48 | NXP

The NXP Semiconductors MC9S08AC32CFDE is an 8-bit microcontroller from the S08AC family featuring an S08 core, 32KB of Flash memory, 1KB of RAM, and a maximum CPU frequency of 40MHz, housed in a 48-pin QFN-EP (7x7 mm) package with exposed thermal pad. It operates from a 2.7V to 5.5V supply and provides 38 general-purpose I/O pins for cost-sensitive embedded designs. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a small computer-on-a-chip built around an 8-bit data bus, integrating a CPU, non-volatile memory (Flash), volatile memory (RAM), and a rich set of peripherals (timers, communication modules, ADC) into a single IC. MCUs belong to the embedded systems hierarchy: microcontroller -> embedded controller -> semiconductor -> IC. The 8-bit segment remains dominant in cost-sensitive, deterministic, low-power applications such as appliance control, sensor hubs, and human-interface devices where 32-bit performance is not required. Key features of the MC9S08AC32CFDE include 32KB of in-application reprogrammable Flash with security, 1KB RAM, an internal clock generator, multiple timers (including a 16-bit timer/PWM), SCI and SPI communication interfaces, an 8-channel 10-bit ADC, and a flexible interrupt controller with keyboard interrupts. The device supports single-wire background debug mode (BDM) for in-circuit programming and debugging without consuming an I/O pin. Technically, the S08 core uses a von Neumann architecture with an enhanced instruction set including the BGND instruction for debug, hardware multiply and divide, and atomic bit manipulation for efficient peripheral control. The integrated 1KB RAM and 32KB Flash allow mid-sized firmware footprints while staying in a low-cost 8-bit envelope, and the 40MHz bus clock supports instruction execution at 20MHz effective rate (2:1 internal bus ratio typical of HCS08 derivatives). Typical applications include home appliances and white goods (washing-machine control boards, microwave oven interfaces), industrial control modules (sensor aggregation, low-cost PLCs), automotive body electronics (interior lighting, seat controllers, instrument-cluster auxiliary logic), consumer electronics remote controls, and battery-powered sensor hubs. The automotive-grade temperature rating (-40C to +125C, AEC-Q100) makes it suitable for under-hood and cabin-body modules. When designing with this MCU, pay attention to the QFN-EP exposed pad - it must be soldered to a sufficient copper pour on the PCB for thermal dissipation and ground referencing, especially at 40MHz full speed. Decouple VDD/VSS pairs with 100nF ceramic capacitors placed within 2mm of each power pin to suppress switching noise that can corrupt ADC conversions and communication edges. The internal clock source can eliminate the external crystal on cost-sensitive boards, but for SCI baud-rate accuracy and EMC compliance an external crystal is still recommended.

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MC9S08AC32CFGE - 8-bit S08 MCU 32KB Flash 40MHz LQFP-44 | NXP
MC9S08AC32CFGE

MC9S08AC32CFGE - 8-bit S08 MCU 32KB Flash 40MHz LQFP-44 | NXP

The NXP MC9S08AC32CFGE is an 8-bit HCS08 microcontroller (MCU) with 32KB Flash memory, a 40MHz HCS08 CPU core (20MHz internal bus frequency), and a 44-pin LQFP (10x10 mm) surface-mount package. An 8-bit microcontroller is an integrated circuit that contains a processor core, memory (Flash, RAM), and peripherals on a single chip, executing one byte of data per instruction cycle. Within the system hierarchy, the MC9S08AC32CFGE belongs to the microcontroller class of embedded processors, which sits below application processors but above simple logic ICs. It is part of NXP's (formerly Freescale Semiconductor) S08AC family, the third family in the Flexis series, which links 8-bit S08 and 32-bit ColdFire devices through pin-compatible device duos and a common development environment. Key features include 32KB of on-chip Flash program memory, a 40MHz HCS08 CPU with 20MHz internal bus operation, a 2.7V to 5.5V single supply voltage range, 38 general-purpose I/O lines, and an enhanced serial communication peripheral set (SCI, SPI, IIC) plus an 8-channel ADC suited to analog sensing tasks. Technically, the HCS08 core implements the HC08 instruction set with background debug mode (BDM) via a standard 6-pin debug connector, enabling non-intrusive flash programming and real-time debugging without additional target resources. The AC family's enhanced timers support PWM generation for motor control and lighting applications. Typical applications include industrial control and embedded automation, home appliances, metering, motor control, low-power board designs, and IoT sensor nodes, where the 5V-tolerant operating range and ADC peripherals simplify interface design. Design consideration: the 2.7V to 5.5V supply range allows direct operation from industrial 5V rails or 3.3V systems, but the 40MHz CPU clock (via internal FLL from a crystal or oscillator source) requires attention to supply decoupling and the RESET pin pull-up per NXP datasheet guidance. This page synthesizes distributor pricing data, drop-in alternatives within the S08AC family, and practical design notes not consolidated in the manufacturer datasheet.

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