MC908QB8CDWE - 8-Bit 8MHz MCU with 8KB Flash | NXP
N.º de pieza: MC908QB8CDWE ✗ Fin de vida| Cant. | Precio unitario | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
MC908QB8CDWE Descripción general
A microcontroller is a compact embedded-control device integrating a processor core, program memory, data memory, I/O, timers, and communication peripherals on one semiconductor die. The MC908QB8CDWE provides a low-cost, low-complexity platform for cost-sensitive automotive and industrial products where an 8-bit control engine is sufficient. Its 8KB flash stores firmware, while 192 bytes RAM supports working variables and stack operations.
The verified product information identifies an enhanced M68HC08 CPU core, 8-bit data width, 8MHz maximum clock frequency, and 8KB flash organized as 8K x 8. The 16 I/O lines provide interfaces for sensors, switches, indicators, actuators, and control logic. The device operates from 3.3V/5V according to the distributor datasheet listing, supporting both legacy 5V and lower-voltage industrial or embedded designs.
The HC08QB family is positioned for compact embedded controllers, particularly applications requiring economical flash programmability and broad I/O availability. Because this MCU is an 8-bit CISC device rather than a high-performance digital signal processor, its strength is deterministic control and simple peripheral integration, not intensive computation or high-bandwidth data processing. Firmware architecture, interrupt handling, and memory-efficient code design are therefore important.
Typical uses include automotive accessory controllers, industrial sequence controllers, motor or relay logic, sensor interfaces, and compact embedded control modules. The 16-pin SOIC package is also straightforward for through-hole assembly and prototype construction. Designers should verify pin multiplexing, timing, electrical limits, and peripheral availability against the manufacturer datasheet before committing a new design, because the supplied search results do not include every register or pin-level parameter.
This product page consolidates verified manufacturer and distributor information, lifecycle status, package data, and cross-reference findings. The manufacturer page identifies the device as end of life, so new production should be confirmed before use. Existing designs should verify stock, sourcing, and approved lifecycle-transition options rather than assuming a drop-in replacement is electrically identical.
Alternativas directas para MC908QB8CDWE — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC908QB8CDWE (mismo factor de forma y huella) — difiere en Package, Architecture, Core, Program Memory Size, Mounting Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC908QB8VDWE
✅ Sustitución directa✓ En stock
$3.95 / unidad
Ver hoja de datos →MC908QB8MDWE
✅ Sustitución directa✓ En stock
$3.65 / unidad
Ver hoja de datos →MC908QB8CDWER
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC908QY8CDWE
✅ Sustitución directa✓ En stock
$2.1 / unidad
Ver hoja de datos →MC908QY8VDWE
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →MC908QB8CDWE Valores máximos y características eléctricas
| Product Type | 8-bit microcontroller |
| Core | HC08 enhanced M68HC08 CPU |
| Frecuencia de reloj máxima | 8 MHz |
| Ancho del bus de datos | 8 bit |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 192 bytes |
| I/O Lines | 16 |
| Tensión de alimentación | 3.3V/5V |
| Architecture | CISC with Von Neumann architecture |
| Encapsulado | 16-pin SOIC |
| Tipo de montaje | Surface mount |
| Family | HC08Q / M68HC08 |
| Processor Series | HC08QB |
Guía de configuración de pines de MC908QB8CDWE 16-pin soic
Configuración de pines para MC908QB8CDWE (encapsulado 16-pin soic). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para MC908QB8CDWE.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MC908QB8CDWE es adecuado para 6 aplicacións: Automotive Accessory Control, Industrial Sequence Controller, Relay and Actuator Interface, Sensor Signal Conditioning, Compact Appliance Controller, Legacy Embedded System Maintenance.
Automotive Accessory Control
MC908QB8CDWE fits simple automotive accessory-control logic where an 8MHz 8-bit processor, 8KB flash, 192 bytes RAM, and 16 I/O lines are sufficient for switch scanning, relay sequencing, or actuator supervision. Its 3.3V/5V listing supports legacy and mixed-voltage design investigation, while the CISC HC08 core favors straightforward control code. The tradeoff is the verified end-of-life status: qualification, temperature range, electrical thresholds, and supply continuity must be approved before production use.
Recomendado
Industrial Sequence Controller
The MC908QB8CDWE is suitable for a compact sequence controller because its 16 I/O lines can support discrete inputs and outputs, while 8KB flash provides space for deterministic firmware and 192 bytes RAM supports control variables. The 8MHz HC08 CPU is appropriate for relay, lamp, pump, or interlock sequencing rather than high-bandwidth processing. Before deployment, confirm I/O voltage thresholds, output-drive limits, watchdog requirements, and environmental specifications, which are not fully present in the verified search data.
Recomendado
Relay and Actuator Interface
Use MC908QB8CDWE as the control brain for a relay or actuator interface when the system needs deterministic event handling and moderate I/O density rather than high computational throughput. Sixteen I/O lines can represent sensor inputs, status LEDs, and driver-enable signals, while the 8MHz CISC core supports straightforward state-machine firmware. Designers must add suitable driver transistors, protection networks, and flyback paths, then verify the device’s absolute maximum and output-current limits from the manufacturer datasheet.
Recomendado
Sensor Signal Conditioning
MC908QB8CDWE can supervise simple sensor inputs in a compact embedded module because its 16 I/O lines provide multiple digital connections and its 8MHz processor can execute calibration, filtering, thresholding, and status logic. The part is not presented in the verified data as a high-resolution analog converter, so analog front-end components remain necessary. Firmware should preserve memory headroom within 8KB flash and 192 bytes RAM, while hardware validation must confirm input thresholds, noise immunity, and any analog-interface requirements.
Recomendado
Compact Appliance Controller
The MC908QB8CDWE is a practical candidate for compact appliance and equipment controllers that use discrete sensors, LEDs, switches, relays, and small state machines. Its 8KB flash and 192 bytes RAM are adequate for modest firmware when code is kept compact, and the 8MHz clock provides ample control-loop headroom for non-real-time tasks. The engineering tradeoffs are limited memory, limited verified peripheral detail, and end-of-life availability, so firmware architecture and obsolescence planning should be addressed before a new platform is released.
Recomendado
Legacy Embedded System Maintenance
MC908QB8CDWE is most defensible for maintenance of an existing design whose firmware, schematic, and qualification history already match this exact part. The verified combination of 8MHz operation, 8KB flash, 192 bytes RAM, 16 I/O lines, and 16-SOIC packaging allows engineers to preserve an established architecture without changing the footprint or memory assumptions. For migration, compare the complete datasheet, pin assignments, timing, electrical limits, and lifecycle status; the supplied search results do not prove that any listed related part is a guaranteed drop-in replacement.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC908QB8CDWE — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC908QB8VDWE | MC908QB8MDWE | MC908QB8CDWER | MC908QY8CDWE | MC908QY8VDWE |
|---|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HC08 / M68HC08 | HC08 / M68HC08 | HC08Q family; detailed verification required | HC08Q family; detailed verification required | HC08Q family; detailed verification required | HC08Q family; detailed verification required |
Diferenciadores clave
- Exact identified resource set for legacy control designs (frente a MC908QB8VDWE)
- Documented end-of-life visibility (frente a Newer NXP MCU families)
- Compact 16-I/O control interface (frente a MC908QY8CDWE)
- 3.3V/5V listing for mixed-voltage investigation (frente a MC908QB8MDWE)
Notas de diseño
Do not treat a related HC08Q MPN as a drop-in replacement without checking the manufacturer pinout and electrical tables. The verified search results establish MC908QB8CDWE as an 8MHz, 8KB-flash, 16-I/O, 16-SOIC device, but they do not provide complete alternative specifications. Review reset, oscillator, supply, I/O, programming, and timing pins before approving any substitution.
The verified listing identifies 3.3V/5V operation, but the permitted input range and I/O thresholds are not included in the supplied data. Confirm supply tolerance, decoupling requirements, output-drive capability, and maximum pin currents from the manufacturer datasheet. For a 3.3V design, calculate external signal levels against the confirmed input thresholds rather than assuming every 5V-tolerant peripheral interface is compatible.
The MC908QB8CDWE is identified as a 16-pin SOIC device, so preserve the existing land pattern and pin-1 orientation during maintenance layouts. Verify that exposed leads, pad dimensions, solder mask, and assembly clearance match the selected SOIC footprint. If a replacement uses a different package suffix or tape orientation, treat it as a board-level change rather than a software-only migration.
The supplied verified data does not provide the operating-temperature range, thermal resistance, or maximum power dissipation, so no reliable junction-temperature calculation can be made. In legacy equipment, measure worst-case supply current and ambient temperature during operation, then verify the result against the manufacturer’s absolute maximum ratings and the system enclosure temperature. Treat any thermal estimate as [DATA_NEEDED] until those inputs are available.
Información de cumplimiento
The supplied distributor search result does not establish RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain current compliance documentation from NXP or the authorized distributor before release.
