MC9S08QB4CWL - 8-Bit 20MHz 4KB MCU | NXP | Embedded Control
Référence : MC9S08QB4CWL ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.1963 | $1,20 |
| 10 | $1.1963 | $11,96 |
| 100 | $1.1963 | $119,63 |
| 500 | $1.1963 | $598,15 |
| 1 000 | $1.1963 | $1 196,30 |
MC9S08QB4CWL Présentation
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.
Alternatives de remplacement direct pour MC9S08QB4CWL — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC9S08QB4CWL (même facteur de forme et même empreinte) — différant par Package, Flash Memory, CPU Architecture, Operating Temperature Range, Supply Voltage Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC9S08QE4CWJ
✅ Remplacement direct✓ En stock
$1.437 / unité
Voir la fiche technique →MC9S08QB4CTG
✅ Remplacement direct✓ En stock
$1.82 / unité
Voir la fiche technique →MC9S08QA4CDNE
✅ Remplacement direct✓ En stock
$1.9808 / unité
Voir la fiche technique →MC9S08QG4CDNE
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC9S08QE4CLC
✅ Remplacement direct✓ En stock
$5.378 / unité
Voir la fiche technique →MC9S08QB4CWL Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit HCS08 microcontroller |
| Maximum CPU Frequency | 20 MHz |
| Program Memory | 4 KB Flash (4K x 8) |
| Boîtier | 28-pin SOIC |
| Architecture | HCS08 |
| Plage de température de fonctionnement | -40 °C to +85 °C |
| Connectivity | I2C, LIN, SCI, and SPI |
| Keyboard Interface | Integrated |
| LED Drive Capability | High-current LED drivers |
| Type de montage | Surface mount |
Guide de configuration des broches du MC9S08QB4CWL 28-pin soic
Configuration des broches du MC9S08QB4CWL (boîtier 28-pin soic). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MC9S08QB4CWL.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC9S08QB4CWL convient pour 6 applications: LED Control Panels, Keypad and Human-Interface Control, Low-Power Sensor and Actuator Nodes, Small Appliance Control, Industrial Control Module, Battery-Operated Embedded Module.
LED Control Panels
The MC9S08QB4CWL fits compact LED-control panels because its verified NXP features include high-current LED drivers, an 8-bit HCS08 CPU, and operation up to 20 MHz. The MCU can execute display or indicator-control firmware while coordinating peripheral functions in a single 28-pin SOIC device. Its 4 KB Flash capacity is appropriate for simple sequencing, debouncing, status logic, and local button-control routines. Design the output stage against the datasheet’s absolute maximum current and thermal limits, because those ratings were not included in the verified snippets. The End of Life status should be considered when creating a new production design.
Recommandé
Keypad and Human-Interface Control
The integrated keyboard-interface capability identified for the MC9S08QB4CWL makes it relevant to keypads, small consoles, and configurable control surfaces. Its 8-bit HCS08 processor at up to 20 MHz can manage scanning, debouncing, status LEDs, and simple user-interface logic, while the 4 KB Flash footprint supports compact firmware. The 28-pin SOIC package can simplify assembly where through-hole-style board servicing and automated surface-mount production are both useful. Before finalizing a design, verify the exact keyboard-interface pins, debounce resources, supply limits, and I/O electrical ratings from the manufacturer datasheet.
Recommandé
Low-Power Sensor and Actuator Nodes
The MC9S08QB4CWL is appropriate for small embedded nodes that read sensors and control actuators over serial interfaces. The verified component data lists I2C, LIN, SCI, and SPI connectivity, giving the firmware options for local sensors, remote modules, and simple industrial equipment. The 20 MHz HCS08 CPU provides more execution margin than a very low-clock-only controller, while the 4 KB Flash store can hold protocol and control routines. Because RAM, sleep currents, I/O levels, and timing limits were not provided in the verified data, validate those specifications before setting the power budget or selecting pull-ups and level-shift components.
Recommandé
Small Appliance Control
The MC9S08QB4CWL can serve as the controller in a small appliance where a local MCU must coordinate buttons, indicators, relays, or motors and respond through serial peripherals. The verified 20 MHz operating speed is suitable for straightforward real-time control loops, while the 4 KB Flash capacity favors compact application firmware rather than large graphical or networking workloads. Its 28-pin SOIC package supports conventional surface-mount assembly, but the designer must confirm the pin multiplexing and drive limits before assigning outputs. The device’s End of Life status makes it most appropriate for maintenance of an existing platform or a project where migration risk has been explicitly accepted.
Recommandé
Industrial Control Module
The MC9S08QB4CWL may be used in a compact industrial-control module when local logic, status handling, and serial communications are more important than high-end processing. The listed LIN and SCI connectivity can support communication with sensors, service interfaces, or neighboring controllers, while the HCS08 CPU and 4 KB Flash provide a simple real-time platform. Industrial suitability still depends on environmental and compliance requirements that are not supplied in the verified data, including EMC, temperature qualification, and transient tolerance. Treat the device as a legacy choice and validate its lifecycle, sourcing, and production continuity before starting a new industrial design.
Recommandé
Battery-Operated Embedded Module
The low-power MCU positioning of the MC9S08QB4CWL makes it a candidate for battery-operated modules with intermittent sensing, local processing, and serial communication. The MCU can manage a duty-cycled control routine and use I2C, LIN, SCI, or SPI depending on the selected peripheral pins. Its 4 KB Flash capacity is sufficient for many small embedded-control programs, while 20 MHz maximum clock performance allows responsive handling of active periods. The verified data does not state sleep-mode current, wake-up time, RAM, or supply voltage, so battery-life calculations require the official datasheet. Confirm those values before choosing external regulators, pull resistors, or level shifters.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC9S08QB4CWL — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC9S08QE4CWJ | MC9S08QB4CTG | MC9S08QA4CDNE | MC9S08QG4CDNE | MC9S08QE4CLC |
|---|---|---|---|---|---|---|
| Package | 28-pin SOIC | 28-pin SOIC - candidate | 28-pin SOIC - candidate | 28-pin SOIC - candidate | 28-pin SOIC - candidate | 28-pin SOIC - candidate |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
Principaux différenciateurs
- Verified legacy control feature set (vs MC9S08QE4CWJ)
- 28-pin SOIC package continuity (vs MC9S08QB4CTG)
- Defined low-temperature operating range (vs MC9S08QA4CDNE)
Notes de conception
Do not treat a same-package S08-family candidate as a true drop-in replacement without checking every pin. The verified data confirms the target’s 28-pin SOIC package but does not provide a complete pinout, supply-voltage range, RAM size, GPIO mapping, or absolute maximum ratings. Compare the manufacturer datasheets for pin multiplexing, oscillator requirements, reset behavior, peripheral assignments, and programming compatibility before modifying a PCB.
Use the manufacturer’s 28-pin SOIC land pattern and place required bypass capacitors close to the supply pins. Keep oscillator and reset traces short, maintain a quiet return path, and route communication lines away from switching regulators or relay drivers. Because the verified data does not specify pin locations or capacitor values, obtain those details from the official NXP datasheet rather than deriving them from generic S08 layouts.
The NXP product page identifies the MC9S08QB4CWL as End of Life, so a production design should include a sourcing review. Verify authorized-channel inventory, last-time-buy status, firmware and toolchain support, and a migration plan before committing new releases. For an existing installed base, preserve the original footprint and pin documentation until a replacement has passed electrical, timing, peripheral, and system-level validation.
Informations de conformité
The verified search data does not provide definitive RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for the target. Confirm current declarations with NXP or the authorized distributor.
