MC908LJ12CFBE - 8-Bit 12KB Flash 52-LQFP MCU | NXP
料号： MC908LJ12CFBE ✗ 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 |
MC908LJ12CFBE 概述
An MCU is a semiconductor that integrates a processor core, program memory, data memory, peripherals, and I/O into one device. The MC908LJ12CFBE belongs to the HC08LJ family within the M68HC08 family of low-cost, high-performance 8-bit microcontroller units. Its CPU08 core supports compatibility with the object-code ecosystem associated with M6805, M146805, and M68HC05 families, while its integrated Flash memory supports firmware storage and the security features described by the family documentation.
Key verified features include an 8-bit data bus, 12KB of Flash memory, up to 512 bytes of on-chip RAM according to the retrieved product information, and an internal oscillator capable of supporting operation up to 8MHz. The device is identified in distributor listings as an HC08 CISC microcontroller in a 52-pin LQFP package. The available search data does not provide complete peripheral, electrical, timing, or pin-level details, so those values must be confirmed from the manufacturer datasheet before design release.
Typical design uses for this device include legacy 8-bit control systems, industrial equipment, simple keypad interfaces, sensor conditioning, actuator control, and compact embedded products whose firmware is already based on the HC08 ecosystem. Since the MCU is marked end of life, engineers should verify software-tool support, programmer availability, production quantities, and any substitute MCU requirements rather than assuming that a similarly packaged microcontroller is electrically or software-compatible.
The primary design consideration is lifecycle availability. Before using MC908LJ12CFBE in a new production design, obtain the official NXP datasheet and product-change information, validate the exact 52-LQFP footprint and pin assignments, and confirm that the development toolchain, programmer, and firmware image are still supported. For an existing product, preserve the original footprint and validate the replacement electrically and in production test equipment.
直接替换替代料： MC908LJ12CFBE ——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： MC908LJ12CFBE （相同外形与封装尺寸） ——差异在于 Package, Architecture, Program Memory, Series, Product Type.
快速对比工具——选择替代料号进行并排对比：
MC908JL8MFAE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC908QB8CDWE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →MC908AP32ACFBE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$29.663 / 个
查看数据手册 →MC908AB32MFUE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →MC908AP16CFBE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$13.6 / 个
查看数据手册 →MC908LJ12CFBE 最大额定值与电气特性
| Product Type | 8-bit microcontroller unit (MCU) |
| Manufacturer | NXP Semiconductors |
| Processor Core | HC08 |
| Architecture | M68HC08 |
| Instruction Set | CISC |
| 数据总线宽度 | 8 bit |
| 最大时钟频率 | 8 MHz |
| Program Memory | 12KB Flash |
| Program Memory Organization | 12K x 8 |
| On-Chip RAM | Up to 512 bytes |
| Internal Oscillator | Up to 8 MHz |
| 电源电压 | 3.3V/5V |
| 封装 | 52-pin LQFP |
| Package Size | 10 x 10 mm |
| 安装类型 | Surface Mount |
| Terminal Count | 52 |
| Temperature Grade | Industrial |
| Packaging | Tray |
| 生命周期状态 | End of Life |
MC908LJ12CFBE 10 x 10 mm 引脚配置指南
MC908LJ12CFBE（10 x 10 mm 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： MC908LJ12CFBE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC908LJ12CFBE 适用于 7 应用s: Legacy Industrial Control, Sensor Interface and Data Acquisition, Keypad and User Interface Control, Actuator and Motor Sequencing, Simple Communication Gateway, Legacy Consumer Appliance Controller, Programmable Logic and Test Fixture.
Legacy Industrial Control
The MC908LJ12CFBE fits legacy industrial-control boards that already depend on the HC08LJ and CPU08 software ecosystem. Its 8-bit core, 12KB Flash memory, up to 8MHz operation, and 52-pin LQFP package provide a defined platform for reading inputs, controlling outputs, and running timing-based control logic. Because the device is End of Life, an existing machine may continue using qualified inventory, but a new design should verify supply and software support before release. The original schematic, programmer, oscillator configuration, I/O thresholds, and timing behavior must be retained during any replacement project.
推荐
Sensor Interface and Data Acquisition
The MC908LJ12CFBE can serve as the controller for a compact sensor interface where an 8-bit MCU must collect digital inputs, sequence measurements, and format data for a downstream controller. The verified 12KB Flash capacity provides a defined firmware region, while operation up to 8MHz supports modest control-loop and communication tasks. The actual suitability depends on the device's complete timer, serial-interface, analog, and I/O specifications, which are not included in the retrieved data. Preserve the original pin assignment and validate signal levels, sampling timing, interrupt latency, and sensor reset behavior on hardware.
推荐
Keypad and User Interface Control
The MC908LJ12CFBE is appropriate for a compact keypad, menu, indicator, or access-control interface built around an existing HC08 firmware design. Its 8-bit architecture and 12KB Flash memory are consistent with embedded user-interface state machines, debounce routines, display sequencing, and event handling. The verified package is a 52-pin LQFP, which can support multiple I/O functions, but the complete pin map and electrical limits must be checked in the official datasheet. When replacing the MCU, verify switch debounce timing, indicator drive current, display interface signals, and boot behavior rather than relying on package similarity.
推荐
Actuator and Motor Sequencing
The MC908LJ12CFBE can be used in legacy actuator-control systems where firmware handles relay sequencing, step-command generation, interlocks, fault flags, and safety-related state monitoring. The 8MHz maximum operating frequency and 8-bit CPU provide a baseline for deterministic low-complexity sequencing, but timing margins must be calculated from the actual peripherals and instruction cycle data in the manufacturer documentation. The 52-LQFP footprint may help preserve an existing board, yet exact replacement requires checking every power, ground, timer, interrupt, and I/O pin. Production validation should include worst-case actuator timing and fault-response tests.
推荐
Simple Communication Gateway
MC908LJ12CFBE may be used in a small legacy gateway that translates between a local sensor or control bus and a host processor. Its HC08LJ architecture and CPU08 compatibility can preserve established object-code assumptions, while 12KB Flash provides room for protocol handling and state management. The retrieved data does not confirm the available serial channels, baud-rate support, DMA behavior, or communication voltage levels, so those parameters must be verified directly from the NXP datasheet. During replacement, validate bus timing, idle levels, interrupt handling, framing, retries, and bootloader compatibility.
推荐
Legacy Consumer Appliance Controller
The MC908LJ12CFBE can support an older appliance controller where a compact 8-bit MCU handles button inputs, display states, motor or heater sequencing, and fault reporting. The 3.3V/5V device class and 52-pin LQFP package are compatible with the general architecture of legacy embedded products, although the exact I/O drive and supply requirements are not provided in the verified search data. End-of-life status makes source availability and long-term maintenance more important than headline processor speed. Before migration, verify startup behavior, brownout response, output shutdown states, timing, EMC layout, and the complete manufacturing test sequence.
推荐
Programmable Logic and Test Fixture
The MC908LJ12CFBE can be used in a legacy test fixture or programmable logic controller when a stable 8-bit control engine and established HC08 tooling are more valuable than a newer MCU architecture. The 12KB Flash memory supports embedded test sequences, and operation up to 8MHz can handle low-to-moderate I/O scanning tasks. The device's End of Life status requires careful spare-part planning and calibration of test equipment. A replacement candidate must match the 52-pin footprint, programming interface, boot behavior, I/O electrical characteristics, and timing of the original fixture before it is used in production testing.
推荐
推荐产品汇总
工程参考数据： MC908LJ12CFBE ——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 | MC908JL8MFAE | MC908QB8CDWE | MC908AP32ACFBE | MC908AB32MFUE | MC908AP16CFBE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor |
| Package | 52-pin LQFP | 52-LQFP | 52-LQFP | 52-LQFP | 52-LQFP | 52-LQFP |
关键差异点
- Known target configuration （对比 MC908AP32ACFBE)
- Supplier and lifecycle clarity （对比 MC908JL8MFAE)
- Original 52-pin footprint reference （对比 MC908QB8CDWE)
设计说明
Do not treat a 52-pin LQFP candidate as a drop-in replacement solely because its package family matches. Confirm every power and ground connection, oscillator arrangement, programming interface, interrupt routing, port multiplexing, and I/O electrical threshold against the original MC908LJ12CFBE datasheet. The verified data does not provide the complete pinout, so a footprint-only replacement decision is not acceptable.
Before layout release, verify the exact operating-voltage range, absolute maximum ratings, I/O injection limits, output-drive capability, and power-sequencing requirements from the official NXP datasheet. The product listings identify 3.3V/5V operation, but that label does not establish every pin's voltage tolerance. Preserve the original decoupling and grounding arrangement during a replacement, and validate power consumption under worst-case I/O and peripheral activity.
Use the manufacturer package drawing to define the 52-pin LQFP land pattern, pin-1 orientation, solder-mask clearance, and assembly tolerances. Confirm whether the selected package has any exposed thermal or electrical pad before routing. For legacy board reuse, compare the new part's pinout mechanically and electrically before committing to a footprint because a same package designation does not guarantee the same die pad or exposed-pad arrangement.
The MC908LJ12CFBE is identified as End of Life, so procurement risk can outweigh electrical compatibility. Record approved vendor, date code, traceability, incoming-inspection criteria, and spare quantity. If a production transition is required, run boot, programming, interrupt, timer, communication, brownout, and full I/O regression tests on engineering units before approving the change.
合规信息
The verified distributor and manufacturer search results do not provide extractable RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The NXP product page identifies the device as End of Life. Compliance claims must be confirmed from current manufacturer documentation or supplier certificates.
