MC908QB4MDWER - 8-Bit 8MHz MCU, 4KB Flash, 16-SOIC | NXP
N.º da peça: MC908QB4MDWER ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.5191 | $4,52 |
| 10 | $4.5191 | $45,19 |
| 100 | $4.5191 | $451,91 |
| 500 | $4.5191 | $2.259,55 |
| 1.000 | $4.5191 | $4.519,10 |
MC908QB4MDWER Visão geral
An 8-bit microcontroller is a compact embedded-control semiconductor that integrates a processor core, program memory, data memory, and peripheral interfaces on one integrated circuit. In the broader electronics hierarchy, an MCU belongs to the embedded processor family and semiconductor category. The HC08 family is associated with simple control tasks such as digital I/O, timing, communications, motor or relay control, and sensor acquisition. It is generally selected when a system needs deterministic embedded behavior without the cost and complexity of a higher-bit processor.
The verified MC908QB4MDWER specification identifies 4KB of flash program storage and an 8MHz maximum operating frequency. Those values position the device for compact firmware rather than resource-intensive applications. The 16-SOIC package provides a standard surface-mount footprint with leads on both sides, making it suitable for conventional PCB assembly. Distributor listings classify the part as a 16-SOIC (0.295-inch, 7.50mm width) device.
The principal design consideration is firmware and peripheral compatibility. Before replacing an existing HC08 design, engineers should verify the exact memory map, pin functions, interrupt behavior, and required development tools against the manufacturer datasheet. The supplied data does not specify supply voltage, RAM, I/O count, timers, communication peripherals, operating-temperature limits, or electrical timing values; those parameters require confirmation before production release. The same caution applies to any substitute: package fit alone does not establish functional equivalence.
Typical uses for this controller include small motor or pump controllers, simple industrial equipment, appliance-control boards, sensor interfaces, and legacy embedded systems. For applications needing higher processing capacity, larger memory, or more communication peripherals, a more capable MCU may be a better architectural choice. For a new design using the same HC08 ecosystem, the MC908QB4MDWER can be considered only after its complete datasheet requirements and toolchain are confirmed.
This page consolidates verified distributor specifications, sourcing links, application context, and engineering cautions. It does not invent electrical ratings, pin functions, lifecycle claims, or alternative-device equivalence where those facts were not provided.
Alternativas drop-in para MC908QB4MDWER — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MC908QB4MDWER (mesmo formato e footprint) — diferindo em Architecture, Package, Product Type, Flash Memory, Microcontroller Family.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC908QB8CDWE
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
Consulte o preço
Ver ficha técnica →MC908JL3ECDWE
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$6.0657 / unidade
Ver ficha técnica →MC908QB4MDWER Classificações máximas e características elétricas
| Product Type | 8-bit microcontroller IC |
| Microcontroller Family | HC08 |
| Processor Architecture | 8-bit |
| Frequência máxima de clock | 8 MHz |
| Flash Memory | 4 KB (4K x 8) |
| Encapsulamento | 16-SOIC |
| Package Width | 0.295 inch, 7.50 mm |
| Tipo de montagem | Surface Mount |
| Manufacturer | NXP Semiconductors |
| Legacy Manufacturer | Freescale Semiconductor |
| Status RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
Guia de Configuração de Pinos do MC908QB4MDWER 0.295 inch, 7.50 mm
Configuração de pinos para MC908QB4MDWER (pacote 0.295 inch, 7.50 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para MC908QB4MDWER.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MC908QB4MDWER é adequado para 6 aplicaçãos: Small Industrial Control Boards, Appliance Control, Simple Motor and Relay Control, Sensor Interface and Monitoring, Legacy Communication Interfaces, Educational and Prototype Embedded Systems.
Small Industrial Control Boards
The MC908QB4MDWER can serve as the control processor for compact industrial equipment when the application fits within an 8-bit, 8 MHz architecture and 4KB of flash program memory. Its 16-SOIC package is practical for conventional two-sided PCB assembly, while the established HC08 family can support deterministic digital control. Use it for relay logic, simple sequencers, limit-switch monitoring, and basic actuator coordination. Before committing, verify the exact I/O count, timing, supply voltage, temperature range, and communication requirements from the manufacturer datasheet. The verified distributor data confirms the processor width, clock, flash capacity, and package, but it does not establish industrial qualification or lifecycle availability. For new machinery, a newer MCU may provide more memory, diagnostics, security, and peripheral flexibility; for legacy equipment, preserving the HC08 architecture may reduce firmware and qualification effort.
Recomendado
Appliance Control
For appliance and household-equipment control, the MC908QB4MDWER offers a compact 8-bit control platform with 8 MHz operation and 4KB of flash in a 16-SOIC package. It can execute fixed control logic for buttons, display segments, relays, motors, temperature inputs, and simple timers. The limited memory makes code size and peripheral usage important: applications should avoid unnecessary libraries and confirm whether RAM and timer resources meet the control schedule. The supplied data does not identify RAM, I/O, display interfaces, or motor-control peripherals, so the exact feature set must be checked. Use the part when maintaining an existing HC08-based appliance platform and minimizing migration risk. Consider a higher-capacity MCU when the appliance needs networking, complex user interfaces, logging, or extensive diagnostics.
Recomendado
Simple Motor and Relay Control
The MC908QB4MDWER is potentially suitable for simple motor, relay, and actuator sequencing where an 8-bit control loop and 8 MHz clock are sufficient. It can manage discrete state machines, timing intervals, input debouncing, and output sequencing while retaining a compact 16-SOIC footprint. The design must include suitable driver transistors, protection components, flyback paths, and power-stage isolation because the MCU itself is a controller, not the high-current switching element. Since the supplied evidence does not specify timer outputs, PWM, I/O levels, or electrical limits, those functions must be verified before schematic release. A part with more flash, timers, or communication may be better for sophisticated motion systems. The MC908QB4MDWER is most attractive for legacy or cost-focused products with established HC08 firmware support.
Recomendado
Sensor Interface and Monitoring
MC908QB4MDWER can be used for basic sensor acquisition and monitoring functions when the sensor interface is compatible with an 8-bit, 4KB-flash MCU architecture. Typical tasks include digital sensor polling, threshold comparison, alarm generation, and periodic data reporting to another controller. The 8 MHz clock provides a defined processor operating point, but the application must be checked for conversion timing, interrupt latency, RAM needs, and available I/O. The verified data does not list ADC, timer, serial, or digital-communication peripherals; therefore, none should be assumed. This device is most appropriate for low-complexity monitoring embedded in an existing HC08 design. For connected sensors, high-resolution acquisition, or modern security requirements, select an MCU with documented peripherals, larger memory, and verified long-term sourcing.
Recomendado
Legacy Communication Interfaces
The MC908QB4MDWER may be useful in legacy communication-interface assemblies when the required protocol, baud rate, electrical standard, and pin mapping are supported by the exact HC08 device configuration. Its 8 MHz architecture can handle protocol state machines, framing, timeout handling, and data buffering when firmware size permits. The 4KB flash capacity constrains stack depth and library complexity, so protocol tables and logging functions should be budgeted carefully. The supplied distributor snippets do not confirm UART, SPI, I2C, CAN, or other communication peripherals, and they do not provide pin assignments. Engineers must verify these functions from the manufacturer datasheet and validate line-driver, isolation, and connector requirements. Use this part mainly for a proven legacy communications product; select a current MCU with documented peripheral support for new high-throughput or networked systems.
Recomendado
Educational and Prototype Embedded Systems
MC908QB4MDWER can support educational prototypes, legacy controller demonstrations, and proof-of-concept embedded systems because it combines an 8-bit CPU, 8 MHz operation, 4KB flash, and a 16-SOIC package. The limited memory makes it useful for small state machines, GPIO experiments, timing exercises, and basic peripheral interfacing. A prototype should first confirm the package pinout, supply voltage, clock configuration, reset requirements, and programming method from the exact datasheet. The supplied evidence does not include RAM, I/O, timer, communication, or toolchain details, so a development board listing cannot substitute for device documentation. For teaching, this device can illustrate embedded architecture and legacy product maintenance. For new university or product-development work, compare it with a currently supported MCU that offers stronger documentation, broader tooling, and more memory.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC908QB4MDWER — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC908QB8CDWE | MC908AB32MFUE | MC908JL3ECDWE | MC908GZ16CFAE | MC908GZ16MFAE |
|---|---|---|---|---|---|---|
| Manufacturer | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-SOIC | SOIC-16 | TQFP-32 | SOIC-16 | TQFP-16 | TQFP-16 |
Principais diferenciais
- Compact legacy-control architecture (vs MC908QB8CDWE)
- Package-specific replacement screening (vs MC908JL3ECDWE)
- Avoid assuming cross-package migration (vs MC908AB32MFUE)
Notas de projeto
Treat the 16-SOIC footprint as a verified mechanical starting point only. Before routing, obtain the exact MC908QB4MDWER package drawing and confirm pin numbering, lead pitch, body width, exposed-heat-pad status, and recommended land pattern. The supplied data confirms 16-SOIC and 7.50 mm width but does not provide a pin diagram or complete dimensional drawing. Do not reuse a 16-pin footprint solely because another HC08 device uses the same nominal package.
Confirm supply-voltage limits, reset behavior, input thresholds, oscillator requirements, and I/O drive limits from the manufacturer datasheet before connecting external sensors or actuators. The 8 MHz clock and 8-bit architecture do not determine the power budget or valid operating region. Add the required decoupling and protection components according to the verified application circuit, and keep high-current switching stages separate from sensitive control traces. No supply-voltage value was present in the supplied data, so a regulator or protection network should not be guessed.
Do not infer RAM, GPIO, timer, PWM, UART, SPI, I2C, ADC, or interrupt resources from the HC08 family name. The verified data only establishes 8-bit processing, 8 MHz operation, 4KB flash, and 16-SOIC packaging. A design that assumes an unlisted peripheral may fail at firmware bring-up even if the package fits. Check the exact device documentation, linker map, pin assignments, and toolchain target before committing PCB area or production firmware.
The MC908QB4MDWER is an embedded controller rather than a power-conversion device, so no SOA applies. Thermal design should focus on package soldering, copper exposure, ambient temperature, and nearby regulator or driver dissipation. The supplied data does not provide operating-temperature limits or thermal resistance, so those values must be obtained from the datasheet before calculating junction temperature. Use established assembly and reflow guidance for the exact package and verify the board's heat-spreading area rather than assuming SOIC construction alone is sufficient.
Informações de conformidade
The supplied distributor and cross-reference snippets do not provide current compliance declarations or qualification status for MC908QB4MDWER.