MC908QB8CDWE - 8-Bit 8MHz MCU with 8KB Flash | NXP
料号： MC908QB8CDWE ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC908QB8CDWE 概述
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.
直接替换替代料： MC908QB8CDWE ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC908QB8CDWE （相同外形与封装尺寸） ——差异在于 Package, Architecture, Core, Program Memory Size, Mounting Type.
快速对比工具——选择替代料号进行并排对比：
MC908QB8VDWE
✅ 直接替换✓ 有现货
$3.95 / 个
查看数据手册 →MC908QB8MDWE
✅ 直接替换✓ 有现货
$3.65 / 个
查看数据手册 →MC908QB8CDWER
✅ 直接替换📋 参考替代料（不在目录中）
MC908QY8CDWE
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →MC908QY8VDWE
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →MC908QB8CDWE 最大额定值与电气特性
| Product Type | 8-bit microcontroller |
| Core | HC08 enhanced M68HC08 CPU |
| 最大时钟频率 | 8 MHz |
| 数据总线宽度 | 8 bit |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 192 bytes |
| I/O Lines | 16 |
| 电源电压 | 3.3V/5V |
| Architecture | CISC with Von Neumann architecture |
| 封装 | 16-pin SOIC |
| 安装类型 | Surface mount |
| Family | HC08Q / M68HC08 |
| Processor Series | HC08QB |
MC908QB8CDWE 16-pin soic 引脚配置指南
MC908QB8CDWE（16-pin soic 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC908QB8CDWE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC908QB8CDWE 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MC908QB8CDWE ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Exact identified resource set for legacy control designs （对比 MC908QB8VDWE)
- Documented end-of-life visibility （对比 Newer NXP MCU families)
- Compact 16-I/O control interface （对比 MC908QY8CDWE)
- 3.3V/5V listing for mixed-voltage investigation （对比 MC908QB8MDWE)
设计说明
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.
合规信息
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.
