MC9RS08LA8CFT - 20MHz RS08 MCU with 8KB Flash | NXP
料号： MC9RS08LA8CFT ✗ 停产MC9RS08LA8CFT 概述
A microcontroller is a programmable system-on-chip that integrates a CPU, memory, input/output ports, and peripherals into one device. The RS08 family belongs to the 8-bit microcontroller hierarchy, where the CPU executes compact embedded-control firmware while interacting directly with sensors, displays, relays, and communication interfaces. The LA family specifically targets small appliances, medical equipment, and industrial or multi-market products.
Verified device data identifies an 8-bit RS08 CISC core, 8 KB (8K x 8) Flash memory, 256 x 8 RAM, 31 I/O pins, a 20 MHz maximum speed, an internal oscillator, and a 48-VFQFN exposed-pad package. The integrated LCD driver and charge-pump capability support display-oriented designs while reducing external support circuitry. The verified snippets also identify 3.3 V/5 V operation and tray packaging.
The 20 MHz RS08 core provides sufficient control bandwidth for keypad scanning, display updates, sensor acquisition, and state-machine-based appliance control. Its 8-bit architecture simplifies instruction handling and supports economical embedded firmware. Exact peripheral inventory, memory map, interrupt behavior, ADC information, and detailed electrical limits are not available in the supplied source snippets and should be confirmed in the manufacturer datasheet.
Typical applications include small appliances, medical equipment, industrial control panels, and other multi-market embedded systems. The LCD-oriented integration is particularly relevant where a compact display, keypad interface, and local control logic are needed without relying on a higher-cost MCU. The exposed thermal pad improves heat transfer on multilayer PCBs when the device dissipates power.
Designers should treat the part as an end-of-life MCU and verify availability before starting a new production design. Firmware, memory map, LCD segment configuration, bypass capacitors, oscillator settings, and exposed-pad soldering must follow the official datasheet. For new designs, assess current NXP or other MCU families rather than assuming this obsolete device is a safe long-term choice.
This page combines verified manufacturer and distributor information, availability context, package details, and engineering cautions. It is intended to help engineers identify whether the MC9RS08LA8CFT fits an existing embedded design while clearly separating verified facts from parameters that require datasheet confirmation.
直接替换替代料： MC9RS08LA8CFT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
PC9RS08LA8CFT
✅ 直接替换📋 参考替代料（不在目录中）
MC9RS08LA8CFT 最大额定值与电气特性
| Product Type | 8-bit RS08 microcontroller |
| CPU Architecture | RS08 CISC |
| Maximum CPU Speed | 20 MHz |
| Program Memory | 8 KB (8K x 8) Flash |
| RAM | 256 x 8 bits |
| Number of I/O | 31 |
| 电源电压 | 3.3 V / 5 V |
| Oscillator Type | Internal |
| 封装 | 48-VFQFN exposed-pad, 7 x 7 mm |
| Package Code | QCCN |
| 安装类型 | No-lead surface mount |
| 工作温度 | -40 °C to +85 °C |
| ADC | 10-bit |
| LCD Driver | Integrated LCD driver |
| Charge Pump | Integrated charge pump |
| Qualification Grade | Industrial |
MC9RS08LA8CFT qccn 引脚配置指南
MC9RS08LA8CFT（qccn 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： MC9RS08LA8CFT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC9RS08LA8CFT 适用于 8 应用s: Small Appliance Control, Medical Equipment Interface, Industrial Control Panel, Battery-Powered Instrument, Segmented Display Controller, Compact Sensor Hub, Legacy Consumer Product, Educational Embedded Platform.
Small Appliance Control
The MC9RS08LA8CFT fits small-appliance control panels that need local keypad processing, display feedback, and compact embedded firmware. Its 20 MHz RS08 core can execute control state machines while the verified LCD-driver and integrated charge-pump features support segmented display implementations. The 8 KB Flash budget provides room for fixed appliance logic, while 256 bytes of RAM must be allocated carefully for stack, timers, and display data. The 48-VFQFN exposed-pad package helps reduce board area but requires a correctly designed thermal-pad land pattern. Since the device is End of Life, use it primarily in proven legacy platforms unless lifecycle risk is formally accepted.
推荐
Medical Equipment Interface
The MC9RS08LA8CFT is suitable for monitoring or medical-equipment interface modules that require a compact controller, local display feedback, and limited I/O rather than a high-performance processor. Its 20 MHz 8-bit core can coordinate sensor conditioning, buttons, indicators, and status LEDs, while the verified LCD-driver capability may simplify a local display. Medical designs still require strict validation of electrical limits, isolation, leakage, software controls, and regulatory requirements; those parameters are not present in the supplied sources. The MCU is industrial-grade according to one distributor result, but qualification for a medical application is not established by that grade alone.
推荐
Industrial Control Panel
The MC9RS08LA8CFT can support a compact industrial control panel when the design needs local display, keypad, and logic functions in one MCU. The verified 31 I/O pins provide a substantial control interface, and the 20 MHz speed supports polling and deterministic control tasks. The 8 KB Flash and 256-byte RAM are modest, so applications should avoid unnecessary protocol stacks or large buffering. A segment-based LCD is a natural fit because the MCU family includes an LCD driver and integrated charge pump. For new industrial products, verify availability and long-term support because the NXP product page reports the device as End of Life.
推荐
Battery-Powered Instrument
The MC9RS08LA8CFT may fit a battery-powered instrument where a low-cost, compact MCU must manage a display, switches, and sensor-control functions. The verified internal oscillator and 3.3 V/5 V device class can simplify clock and supply planning, although exact current consumption and low-power modes are not supplied and must be checked in the datasheet. The 20 MHz core provides headroom for short control routines, while the 8 KB Flash footprint favors focused firmware. A battery application should calculate average current, sleep behavior, startup time, and regulator efficiency before committing to the legacy MCU.
推荐
Segmented Display Controller
The MC9RS08LA8CFT is a practical candidate for a segmented display controller because the verified NXP description identifies the RS08LA family with LCD drivers and an integrated charge pump. It can combine display refresh, button scanning, and product-state control in one compact package. The exact number of segments, LCD bias configuration, pin mapping, and charge-pump requirements are not present in the supplied snippets, so the display glass and package footprint must be checked against the manufacturer datasheet. The exposed pad should be connected according to the official land pattern, and firmware must preserve display timing during other control interrupts.
推荐
Compact Sensor Hub
The MC9RS08LA8CFT can be used as a compact sensor hub for a legacy embedded product that combines a limited number of sensors, a display, and local actuator outputs. The 20 MHz 8-bit processor is adequate for regular sampling and control loops when the application does not require high-rate data conversion or extensive communications. The verified 31 I/O pins help reduce external multiplexing, but exact ADC channels, timer resources, and communication peripherals require confirmation in the datasheet. Designers should calculate memory use and interrupt latency carefully because only 256 bytes of RAM are verified.
推荐
Legacy Consumer Product
The MC9RS08LA8CFT is appropriate for maintaining an existing consumer product whose firmware and PCB are already tied to the RS08LA architecture. The verified 8 KB Flash and 256-byte RAM provide a defined baseline for firmware maintenance, while the LCD-oriented integration can preserve a simple user interface without a separate display controller. A repair or last-time-buy strategy should document programmer files, package orientation, exposed-pad construction, and supplier traceability. Because NXP identifies the device as End of Life, new consumer platforms should generally use a currently supported MCU unless the legacy platform has no practical redesign path.
推荐
Educational Embedded Platform
The MC9RS08LA8CFT can support an educational embedded-control platform focused on low-cost MCU fundamentals, segmented displays, and simple keypad or sensor experiments. Its 20 MHz speed and 8-bit RS08 architecture make timing and instruction behavior approachable for learning embedded systems. The device must be supported by an available toolchain, programmer, and datasheet before classroom use; those development resources are not included in the supplied sources. The 48-VFQFN exposed-pad package is less convenient for a first prototype than a through-hole or large-lead package, so an adapter board may be necessary.
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工程参考数据： MC9RS08LA8CFT ——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 | PC9RS08LA8CFT |
|---|---|---|
| Product Type | 8-bit RS08 microcontroller | 8-bit RS08 microcontroller |
| CPU Architecture | RS08 CISC | RS08 CISC |
| Maximum Speed | 20 MHz | 20 MHz |
| Program Memory | 8 KB Flash | 8 KB Flash |
| Package | 48-VFQFN exposed-pad, 7 x 7 mm | 48-pin QFN EP, 7 x 7 mm |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V |
| Temperature Grade | Industrial | Automotive |
| Brand | NXP Semiconductors | NXP Semiconductors |
关键差异点
- Legacy-specific RS08LA integration （对比 PC9RS08LA8CFT)
- Verified 20 MHz control core （对比 PC9RS08LA8CFT)
- Defined 8 KB Flash and 256-byte RAM baseline （对比 PC9RS08LA8CFT)
- Compact 48-VFQFN exposed-pad implementation （对比 PC9RS08LA8CFT)
设计说明
Do not treat MC9RS08LA8CFT as a generic 48-pin microcontroller: the verified device is End of Life, and its RS08 memory map, LCD driver, charge pump, and exposed-pad construction are device-specific. Before modifying a legacy PCB, verify the exact NXP datasheet, package drawing, pin names, programming requirements, and LCD configuration. In particular, do not infer that a related PC9RS08LA8CFT is interchangeable merely because both listings describe a 48-pin QFN EP package.
Route the QFN exposed pad according to the manufacturer land pattern and connect it to the recommended ground or thermal plane. Keep power and decoupling traces short, and place required bypass capacitors close to their associated supply pins. The 7 x 7 mm package has limited lead area, so assembly capability, solder mask definition, paste volume, and inspection access should be reviewed before building a replacement assembly.
Plan the supply rail for both 3.3 V and 5 V designs only after checking the complete electrical limits in the official datasheet. The supplied sources verify nominal operation but do not provide current-consumption values, startup behavior, or regulator requirements. Measure startup current and peripheral load in the target configuration, and include bulk and local decoupling according to the reference circuit in the manufacturer documentation.
Because the MCU integrates LCD-related functions, separate display and power routing from sensitive analog or sensor inputs where practical. Confirm whether the LCD glass uses internal charge-pump bias and follow the recommended segment and common connections exactly. Firmware should avoid long interrupt-disabled intervals during display updates so keypad polling and control-loop timing remain deterministic.
合规信息
The supplied sources do not provide explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 declarations for MC9RS08LA8CFT. The MC9RS08LA8CFT is identified as industrial by one distributor result, but industrial grade does not establish AEC-Q100 qualification. PC9RS08LA8CFT is described as an automotive related version, not as a verified qualification for the target part.
