MC9RS08KA4CWG - 8-Bit 20MHz 4KB Flash MCU | NXP
料号： MC9RS08KA4CWG ✗ 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 |
MC9RS08KA4CWG 概述
A microcontroller is a semiconductor device that integrates a processor core, program memory, data memory, peripherals, and input/output functions into one component. In the system hierarchy, this MCU belongs to the embedded-controller and integrated-circuit classes rather than to a general-purpose computer. Its small RS08 core is designed for compact control logic, allowing a product to replace separate logic devices while keeping the design economical.
Key verified features include an 8-bit RS08 central processing unit, 20 MHz maximum CPU frequency, 4 KB flash organized as 4K x 8, and 128 bytes of RAM. The device is associated with the RS08KA general-purpose family for ultra-low-end applications. Its flash memory provides nonvolatile program storage, while RAM supports working variables and stack operations. The 16-SOIC package also offers a familiar surface-mount footprint for conventional PCB assembly.
The MC9RS08KA4CWG is suitable for simple embedded controllers where the application does not require a large memory footprint or high computational throughput. It can be used in cost-sensitive control systems, small sensor interfaces, basic actuator controllers, household equipment, and low-power embedded products. The 20 MHz CPU rating provides a clear performance ceiling for designs using the RS08KA instruction set and peripheral resources.
The device is listed as an NXP product with an end-of-life overview, so lifecycle planning should confirm availability, last-time-buy information, and any approved successor before new production designs are released. Because the target is not a power semiconductor, safe-operating-area data is not applicable.
For PCB design, use the manufacturer pinout and package drawing for every connection, especially power, reset, clock, and I/O pins. Confirm the supported supply voltage, oscillator configuration, programming method, and peripheral multiplexing in the official datasheet. Keep traces short, provide appropriate decoupling near the supply pins, and validate the final firmware and timing on representative hardware.
This product page combines the verified distributor identity, NXP lifecycle information, package and memory specifications, and engineering-oriented selection notes. It is intended to support sourcing and design review while clearly separating verified facts from details that require confirmation from the manufacturer datasheet.
直接替换替代料： MC9RS08KA4CWG ——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： MC9RS08KA4CWG （相同外形与封装尺寸） ——差异在于 Package, Program Memory Size, Operating Temperature, Core Architecture, RAM Size.
快速对比工具——选择替代料号进行并排对比：
MC9RS08KA8CWG
✅ 直接替换✓ 有现货
$1.52 / 个
查看数据手册 →MC9RS08KA4CWGR
✅ 直接替换📋 参考替代料（不在目录中）
MC9RS08KA4CWJ
✅ 直接替换✓ 有现货
$1.02 / 个
查看数据手册 →MC9RS08KB4CWJ
✅ 直接替换✓ 有现货
$1.49 / 个
查看数据手册 →MC9RS08KB8CWJ574
✅ 直接替换✓ 有现货
$0.74 / 个
查看数据手册 →MC9RS08KA4CWG 最大额定值与电气特性
| Product Type | 8-bit microcontroller |
| Processor Core | RS08 |
| Processor Series | RS08KA |
| Maximum CPU Frequency | 20 MHz |
| Flash Memory | 4 KB (4K x 8) |
| RAM | 128 bytes |
| 数据总线宽度 | 8 bit |
| 电源电压 | 2.5 V / 3.3 V / 5 V |
| 工作温度 | Up to 85°C |
| 封装 | 16-SOIC |
| Package Type | Small-outline integrated circuit |
| 安装类型 | Surface mount |
| Architecture | RS08 CISC |
| Application Class | Cost-sensitive low-end embedded control |
| Low-Power Modes | Supported |
| Manufacturer | NXP Semiconductors |
| RoHS | Not stated in provided verified data |
| REACH | Not stated in provided verified data |
| AEC-Q100 | Not stated in provided verified data |
MC9RS08KA4CWG small-outline integrated circuit 引脚配置指南
MC9RS08KA4CWG（small-outline integrated circuit 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： MC9RS08KA4CWG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC9RS08KA4CWG 适用于 6 应用s: Cost-Sensitive Embedded Control, Simple Sensor Interface, Small Household Appliance Controller, Basic Actuator and Relay Interface, Battery-Powered Low-Power Module, Compact Educational Controller.
Cost-Sensitive Embedded Control
The MC9RS08KA4CWG fits basic embedded-control products where an 8-bit processor, 4 KB of flash, and 128 bytes of RAM are sufficient. Its RS08KA architecture targets compact, economical designs, so it is appropriate for simple sequencing, state-machine control, and limited peripheral coordination. Placing the MCU beside the controlled load and local sensors can reduce system complexity. The main design constraint is the small memory footprint: firmware and buffers must remain deliberately compact, and all timing and peripheral details must be checked against the NXP datasheet.
推荐
Simple Sensor Interface
MC9RS08KA4CWG can supervise a small sensor or switch matrix in a compact 5 V product. The 20 MHz RS08 CPU provides headroom for sampling and basic filtering, while 4 KB flash supports a focused control program and 128 bytes RAM handles limited state storage. Place the MCU close to the sensor interface to reduce wiring and improve signal integrity, but do not assume the memory is sufficient for large buffers. Verify sensor timing, interrupt requirements, and available I/O in the official device documentation.
推荐
Small Household Appliance Controller
The MC9RS08KA4CWG is suitable for a compact appliance controller that coordinates buttons, indicators, relays, or small actuators. Its 16-SOIC package is easy to route on a conventional mixed-signal board, and the 20 MHz 8-bit processor is appropriate for deterministic supervisory logic. The design should isolate noisy loads from sensitive control traces and include appropriate protection for inductive or switching outputs. Because the MCU is end of life, validate the exact electrical limits and plan an approved migration before committing to a new appliance platform.
推荐
Basic Actuator and Relay Interface
For low-current actuator sequencing, MC9RS08KA4CWG can provide a compact control hub between input commands and output drivers. The 8-bit RS08 processor is large enough for a state machine and basic timing, while the compact 16-SOIC package leaves board area for driver circuitry. Keep high-current switching paths physically separated from the MCU and use suitable transistor, diode, and snubber networks. The supplied data does not specify output-driver current or timing margins, so the MCU should never directly drive an unprotected load.
推荐
Battery-Powered Low-Power Module
The MC9RS08KA4CWG may fit a small battery-powered module when low-power modes are adequate and the application code remains within 4 KB of flash. The device is identified as targeting cost-sensitive 5 V applications and includes low-power modes according to the verified NXP product information. It is best suited to duty-cycled sensing, wake-up logic, and low-rate status reporting rather than continuous high-rate processing. Confirm sleep currents, wake-up time, clock behavior, and supply-voltage limits from the official datasheet before sizing a battery.
推荐
Compact Educational Controller
MC9RS08KA4CWG is useful in educational and prototype controller boards because it combines a documented 8-bit RS08 CPU, 4 KB flash, 128 bytes RAM, and a conventional 16-SOIC package. Students can learn basic firmware, interrupt handling, and peripheral control without carrying the memory overhead of a larger MCU. The limited RAM and flash make memory discipline especially visible in the design. Use the official pinout and development information, and avoid using an end-of-life part in a safety-critical or long-lived product without a migration plan.
推荐
推荐产品汇总
工程参考数据： MC9RS08KA4CWG ——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 | MC9RS08KA8CWG | MC9RS08KA4CWGR | MC9RS08KA4CWJ | MC9RS08KB4CWJ | MC9RS08KB8CWJ574 |
|---|---|---|---|---|---|---|
| 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 |
关键差异点
- RS08KA family positioning （对比 MC9RS08KB4CWJ)
- Verified memory configuration （对比 MC9RS08KA8CWG)
- Known package identity （对比 MC9RS08KA4CWGR)
设计说明
Route the 16-SOIC footprint from the official NXP package drawing and pin table rather than from a generic SOIC footprint. Confirm pin 1 orientation, exposed or non-exposed pad status, and all peripheral multiplexing before release. Place the supply decoupling capacitor close to the device power pin and provide a short, low-impedance ground return. The verified data confirms the 16-SOIC package but does not provide individual pin assignments, so footprint and pin verification are mandatory.
The verified part is associated with 2.5 V, 3.3 V, and 5 V supply options for cost-sensitive applications, but the complete voltage tolerance and current limits are not included in the supplied data. Confirm the exact supply range, I/O thresholds, oscillator requirements, and power-consumption modes in the NXP datasheet before connecting external circuitry. Keep noisy switching regulators and actuator drivers physically separated from the MCU supply and ground paths.
Do not assume that related RS08KA or RS08KB MPNs are automatically drop-in replacements. MC9RS08KA8CWG, MC9RS08KA4CWGR, MC9RS08KA4CWJ, MC9RS08KB4CWJ, and MC9RS08KB8CWJ574 appear in comparison or site results, but the supplied data does not fully verify their memory maps, peripherals, pin multiplexing, and lifecycle terms. Validate the replacement with an exact NXP cross-reference, firmware memory map review, and hardware comparison.
合规信息
The supplied verified results identify the part and its product category but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. A microcontroller is not automatically AEC-Q100 qualified; verify any automotive claim with NXP documentation.