MC908JB8EPE - 8-Bit 8KB Flash 24-QFN MCU | NXP
N.º de pieza: MC908JB8EPE ✗ Fin de vida| Cant. | Precio unitario | Total |
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MC908JB8EPE Descripción general
An MCU is a programmable embedded controller that combines a CPU, memory, and peripherals on one semiconductor device. The MC908JB8EPE belongs to the M68HC08 family, a low-cost 8-bit microcontroller platform intended for compact control, communication, and embedded I/O applications. Its 8-bit architecture is designed for efficient byte-oriented control tasks rather than high-throughput computing.
The verified product information identifies the CPU08 core, 8KB flash storage, 24-QFN packaging, surface mounting, USB connectivity, and LED peripherals. The package is listed as 24-VFQFN with an exposed pad in distributor data. Additional details such as clock frequency, RAM, operating voltage, pin functions, and peripheral set were not supplied in the verified dataset and require confirmation from the manufacturer datasheet before design release.
The exposed-pad package helps remove heat from the device during operation, but final thermal performance depends on the PCB land pattern, copper area, vias, ambient temperature, and switching activity. Because the verified data does not provide a complete electrical timing or pin-function table, engineers should use the official NXP documentation to validate power pins, ground connections, programming signals, decoupling, and exposed-pad implementation.
Typical embedded uses include USB-connected peripheral control, LED indication and status management, compact consumer interfaces, and low-cost embedded control systems. For a new design, confirm the exact memory map, peripheral availability, clock requirements, and programming workflow against the manufacturer datasheet.
This page consolidates the verified product identity, package information, source links, and design caveats. It does not infer missing electrical specifications or present unverified substitutions as drop-in replacements.
Alternativas directas para MC908JB8EPE — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
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Solicitar alternativasMC908JB8EPE Valores máximos y características eléctricas
| Product Type | 8-bit microcontroller unit (MCU) |
| Processor Core | Enhanced M68HC08 CPU08 |
| Architecture | 8-bit CISC |
| Flash Memory | 8KB (8K x 8) |
| Encapsulado | 24-QFN (4 x 4 mm) |
| Package Type | 24-VFQFN with exposed pad |
| Tipo de montaje | Surface mount |
| Connectivity | USB |
| Peripheral | LED |
| Rango de temperatura de funcionamiento | 0C to 70C (TA) |
| Manufacturer Family | M68HC08 |
| Core Processor | HC08 |
| Core Size | 8-bit |
| Tipo de memoria | Flash |
| Recuento de pines | 24 pins |
| Package Dimensions | 4 x 4 mm |
| Supplier Package Description | 24-QFN (4x4) |
Guía de configuración de pines de MC908JB8EPE 24-qfn (4x4)
Configuración de pines para MC908JB8EPE (encapsulado 24-qfn (4x4)). 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 MC908JB8EPE.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MC908JB8EPE es adecuado para 6 aplicacións: USB-Connected Embedded Peripheral, LED Status and User Interface Control, Compact Consumer Control Module, Low-Cost Industrial Control, Programmable LED and Sensor Interface, Educational 8-Bit MCU Platform.
USB-Connected Embedded Peripheral
MC908JB8EPE fits a compact USB-enabled peripheral when the design needs an 8-bit HC08 controller and 8KB of flash rather than a high-performance application processor. The verified distributor data lists USB connectivity, while the M68HC08 family positioning supports low-cost embedded control. Place the MCU beside the USB connector, route high-speed signals as a controlled differential pair, and provide the power and decoupling arrangement required by the manufacturer datasheet. The key engineering check is that USB class, endpoint, clock, RAM, and power requirements are not fully provided in the verified data and must be confirmed before schematic release.
Recomendado
LED Status and User Interface Control
The verified listing identifies LED peripherals on MC908JB8EPE, making the device relevant to compact indicator, keypad, or status-panel designs. An 8-bit architecture is generally appropriate for deterministic control loops that scan inputs and update multiple LED or switch states. Use GPIO software debouncing and bounded output states, and confirm the actual LED-capable pins and electrical limits from the complete pinout. Because the verified data does not specify GPIO drive strength, LED current, or timing values, validate resistor values and any high-current or matrix driver requirements against the NXP datasheet.
Recomendado
Compact Consumer Control Module
MC908JB8EPE can serve as the control element in a compact appliance, accessory, or small consumer device where a byte-oriented MCU and 8KB flash are sufficient for the application. Its 4 x 4 mm 24-QFN package supports dense layouts, but the exposed pad and fine-pitch assembly process require disciplined land-pattern and solderability review. Define a conservative brownout and reset strategy, provide local decoupling, and test startup across the complete supply range. The verified data confirms the MCU identity and package, while voltage thresholds, reset behavior, and maximum pin loading remain to be sourced from the manufacturer documentation.
Recomendado
Low-Cost Industrial Control
The MC908JB8EPE is applicable to low-cost embedded control tasks when the system requires deterministic I/O handling rather than high-bandwidth processing. The verified 0C to 70C ambient specification may suit indoor or controlled industrial equipment, but it does not establish ruggedized or extended-temperature qualification. Use the exposed pad to improve thermal coupling, keep high-current switching nodes away from sensitive control traces, and validate the controller inside the final enclosure. Production designs should confirm supply voltage, clock tolerance, watchdog behavior, and peripheral resources in the manufacturer datasheet before treating the device as a production control platform.
Recomendado
Programmable LED and Sensor Interface
MC908JB8EPE can coordinate an LED-heavy interface and low-speed sensor inputs in an embedded product. The verified data supports LED peripherals, while the 8-bit CPU and 8KB flash provide a straightforward platform for finite-state control and local signal handling. Place input conditioning close to the MCU, maintain defined levels during reset where required, and separate analog or high-current switching paths from digital traces. The dataset does not identify ADC resolution, sensor interfaces, or GPIO electrical limits, so any analog measurement or precision timing requirement needs a separate verified component choice and complete datasheet review.
Recomendado
Educational 8-Bit MCU Platform
MC908JB8EPE is suitable for an educational embedded-control platform when the goal is to work with an established 8-bit M68HC08 architecture and a compact QFN package. It can teach flash-resident firmware, GPIO control, interrupt-driven state machines, and USB-oriented peripheral integration using the verified HC08 identity and USB listing. A development board should expose programming signals, regulated power, ground, decoupling, and the exposed-pad thermal connection. Because the verified data does not supply pin names, clock settings, or programming voltage, students and evaluators should use the official NXP documentation rather than infer a development-board schematic from the marketplace summary.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC908JB8EPE — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto |
|---|---|
| Brand | NXP Semiconductors |
| Product Type | 8-bit HC08 microcontroller |
| Processor Core | Enhanced M68HC08 CPU08 |
| Flash Memory | 8KB (8K x 8) |
| Architecture | 8-bit CISC |
| Package | 24-QFN (4 x 4 mm) |
| Connectivity | USB |
| Peripheral | LED |
| Operating Temperature | 0C to 70C ambient |
Diferenciadores clave
- M68HC08 CPU08 architecture (frente a No verified same-package alternatives were identified)
- 8KB flash configuration (frente a No verified same-package alternatives were identified)
- Compact exposed-pad package (frente a No verified same-package alternatives were identified)
Notas de diseño
Use the manufacturer land pattern for the 24-QFN 4 x 4 mm package and preserve the exposed-pad connection and thermal-via arrangement. Keep the USB differential route short, impedance-controlled, and away from switching nodes and high-current return paths. Because the verified data does not provide the complete pinout or stack-up guidance, confirm pad geometry, via count, and assembly constraints from the official package drawing before fabrication.
Place local decoupling and the exposed-pad thermal structure directly beneath the device according to the NXP package guidance. Verify the supply voltage, decoupling capacitance, startup behavior, and reset thresholds from the manufacturer datasheet; those values are not present in the verified dataset. Do not select capacitors or resistor values from marketplace summaries alone, because USB and digital control rails can be sensitive to impedance and transient response.
The package designation alone does not establish replacement compatibility. Before substituting an HC08 or other 8-bit MCU, compare pin names and directions, power and ground pins, flash size, RAM, clock requirements, interrupt mapping, USB functions, programming signals, and exposed-pad connection. The supplied cross-reference search did not return a verified drop-in MPN, so any replacement should begin as a design-review candidate rather than an approved second source.
The 24-QFN exposed pad can improve heat transfer, but final junction temperature depends on PCB copper, thermal vias, ambient temperature, and device activity. No power dissipation or thermal-resistance data was supplied, so do not calculate a guaranteed temperature rise from the package size alone. Follow the manufacturer's thermal layout guidance and validate the assembled PCB in the intended enclosure with representative operating conditions.
Información de cumplimiento
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed from current NXP documentation or supplier traceability records.
