최종 구매 공지: MC9RS08KA4CWG 단종에 가까워지고 있습니다. 최종 주문일: 문의하기. 사용 가능한 대체 부품 보기 →
NXP Semiconductors

MC9RS08KA4CWG - 8-Bit 20MHz 4KB Flash MCU | NXP

부품 번호: MC9RS08KA4CWG ✗ 단종
재고 있음 영업일 기준 1~3일 내 발송
2.5 V / 3.3 V / 5 V Vdss 16-SOIC Package 20 MHz Speed 4 KB (4K x 8) Memory
문의하기 가격 문의
MOQ: 1 |
가격 업데이트: 2026-10-20
볼륨 가격
수량 단가 합계
1 $0 $0.00
10 $0 $0.00
100 $0 $0.00
500 $0 $0.00
1,000 $0 $0.00
ℹ️ 모든 가격은 USD 기준입니다

MC9RS08KA4CWG 개요

The NXP Semiconductors MC9RS08KA4CWG is an 8-bit RS08KA microcontroller rated for operation up to 20 MHz, with 4 KB of flash program memory and 128 bytes of RAM, housed in a 16-pin SOIC package. It is intended for cost-sensitive, low-end embedded systems that require essential control functions, low-power modes, and a compact architecture.

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.

드롭인 대체품: MC9RS08KA4CWG — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: MC9RS08KA4CWG (동일 폼 팩터 및 풋프린트) — 차이점: Package, Operating Temperature, Data Bus Width, Program Memory Size, Core Architecture.

NXP Semiconductors
Package: 20-SOIC (SOIC-20)
Program Memory Size: 4 KB (4K x 8) FLASH
Core Architecture: RS08 (HC08 subset)
비교 대상: MC9RS08KA4CWG →
NXP Semiconductors
Package: 20-SOIC (SOIC-20)
Program Memory Size: 4 KB (4K x 8) FLASH
Core Architecture: RS08 (HC08 subset)
비교 대상: MC9RS08KA4CWG →
NXP Semiconductors
Package: 16-pin SOIC (SOW)
Operating Temperature: -40 C to +85 C (industrial, see datasheet)
Core Architecture: RS08 (8-bit, HC08 subset)
비교 대상: MC9RS08KA4CWG →
NXP Semiconductors
Package: 20-pin SOIC (wide-body, tube)
Operating Temperature: -40C to +85C
Data Bus Width: 8-bit
비교 대상: MC9RS08KA4CWG →
NXP Semiconductors
Program Memory Size: 8 KB (8K x 8)
비교 대상: MC9RS08KA4CWG →

빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:

MC9RS08KA8CWG

✅ 드롭인
NXP Semiconductors
📦 16-SOIC
RS08 (8-bit, HC08 subset) · RS08KA · 8 bit · 8 KB · 20 MHz · 2.5 V to 5.5 V · -40 C to +85 C (industrial, see datasheet)

✓ 재고 있음

$1.52 / 개

데이터시트 보기 →

MC9RS08KA4CWGR

✅ 드롭인
📦 16-SOIC
Same MC9RS08KA4 base designation with an alternate suffix; verified data confirms the relationship but does not quantify suffix-specific electrical differences

📋 참조 대체품 (카탈로그에 없음)

MC9RS08KA4CWJ

✅ 드롭인
NXP Semiconductors
📦 16-SOIC
RS08 (HC08 subset) · 8 bit · 20 MHz · 4 KB (4K x 8) FLASH · 4 · 20-SOIC (SOIC-20) · Surface Mount

✓ 재고 있음

$1.02 / 개

데이터시트 보기 →

MC9RS08KB4CWJ

✅ 드롭인
NXP Semiconductors
📦 16-SOIC
RS08 · 8-bit · 20 MHz · 4 KB (4K x 8) Flash · 126 B · None (Flash-based) · 18 · 2.5 V to 5.5 V

✓ 재고 있음

$1.49 / 개

데이터시트 보기 →

MC9RS08KB8CWJ574

✅ 드롭인
NXP Semiconductors
📦 16-SOIC
NXP Semiconductors (formerly Freescale) · RS08 (8-bit) · RS08KB · Flash · 8 KB (8K x 8) · 20 MHz · 20-SOIC (wide-body, 7.5 mm width) · Surface Mount

✓ 재고 있음

$0.74 / 개

데이터시트 보기 →

MC9RS08KA4CWG 최대 정격 & 전기적 특성

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
데이터 버스 폭 8 bit
공급 전압 2.5 V / 3.3 V / 5 V
동작 온도 Up to 85°C
패키지 16-SOIC
Package Type Small-outline integrated circuit
실장 유형 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 핀 구성 가이드

MC9RS08KA4CWG(small-outline integrated circuit 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.

MC9RS08KA4CWG의 small-outline integrated circuit 패키지 핀아웃 다이어그램

다음에 대한 상세 핀아웃 데이터 없음: MC9RS08KA4CWG.

다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.

일반적인 애플리케이션

MC9RS08KA4CWG 적합 용도: 6 애플리케이션s: 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.

🧩

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.

⚡

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.

🔧

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.

🔋

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.

🖥️

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.

What is the operating frequency of MC9RS08KA4CWG?
The MC9RS08KA4CWG operates up to 20 MHz according to the verified DigiKey product listing and NXP product information. Its 8-bit RS08 central processing unit is intended for compact embedded-control tasks rather than high-throughput processing. The 20 MHz figure is the maximum CPU frequency identified for this part; the actual operating point must remain within the device's complete electrical and timing limits in the manufacturer datasheet.
How much flash memory does MC9RS08KA4CWG have?
The MC9RS08KA4CWG provides 4 KB of flash memory, organized as 4K x 8, according to the verified DigiKey listing. This nonvolatile program memory is suitable for compact firmware and control logic. The NXP product page also identifies the device as an 8-bit microcontroller with 4KB flash, while the verified cross-reference data reports 128 bytes of RAM. Flash endurance, programming voltage, and programming timing are not provided here and must be checked in the official datasheet.
What is the package of MC9RS08KA4CWG?
The MC9RS08KA4CWG is supplied in a 16-SOIC package. The verified DigiKey result identifies the device as a 16-SOIC microcontroller, and the Mouser listing likewise describes a 16SOIC package. A 16-SOIC footprint is surface mount and uses a gull-wing lead arrangement. The selected package library key is soic-16, so the package diagram must contain all 16 pins and match the manufacturer pin numbering.
Does MC9RS08KA4CWG have 128 bytes of RAM?
Yes, the verified NXP cross-reference result identifies the MC9RS08KA4CWG as having 128 bytes of RAM. The same source describes the device as a low-cost 8-bit MCU with 4KB flash and low-power modes for cost-sensitive 5 V applications. RAM capacity is an important constraint for stack depth, buffering, and intermediate variables, so firmware must be sized against the available memory and the datasheet memory map.
Is MC9RS08KA4CWG suitable for 5V applications?
The MC9RS08KA4CWG is associated with cost-sensitive 5 V applications, according to the verified NXP cross-reference data. The same source lists 2.5 V, 3.3 V, and 5 V supply options in its specification summary. The selected supply voltage must still be confirmed against the official electrical characteristics, including voltage tolerances, I/O limits, clock requirements, and power-consumption conditions.
Where can I find the MC9RS08KA4CWG datasheet PDF?
The official manufacturer product page is https://www.nxp.com/part/MC9RS08KA4CWG, and it is the preferred starting point for the MC9RS08KA4CWG datasheet. The verified search results also identify datasheet mirrors at Datasheets.com and AllDataSheet. Use the NXP page first because it is the authoritative product source; the provided data does not expose a document number or page count, so those details are intentionally not reproduced.
What is the pinout of MC9RS08KA4CWG?
The MC9RS08KA4CWG uses a 16-SOIC package, but the supplied verified data does not include the individual pin names or the complete manufacturer pin table. Consequently, a complete pinout cannot be safely fabricated in this data set. The package library key is soic-16, and the final design must use the official NXP pinout drawing or datasheet for pins 1 through 16, including power, ground, reset, programming, clock, and I/O assignments.
Is MC9RS08KA4CWG active or end of life?
The verified NXP product page includes an End of Life Overview for MC9RS08KA4CWG, so the product is treated as end of life for this page rather than as an active new-design part. The verified distributor results also show sourcing pages, but distributor presence does not establish active lifecycle status. Before committing to production, check the current NXP lifecycle record for last-time-buy, obsolescence, or approved successor information.
What can replace MC9RS08KA4CWG?
The verified cross-reference data does not establish five or more pin-compatible replacements for MC9RS08KA4CWG. MC9RS08KA8CWG is shown as a related RS08KA comparison, but the supplied data does not verify identical pin compatibility or a drop-in relationship. MC9RS08KB12CSG is also compared, but it has 12 KB of flash rather than 4 KB and cannot be assumed to be a drop-in replacement. Use a manufacturer or distributor cross-reference check before substituting.
Is MC9RS08KA4CWG the same as MC9RS08KA4CWGR?
The verified search results list MC9RS08KA4CWGR alongside MC9RS08KA4CWG, but they do not provide enough verified technical information to claim identical electrical, pin, or lifecycle characteristics. The suffix may indicate packaging or ordering differences, but that must be confirmed from the NXP ordering information. Do not treat the two MPNs as interchangeable without checking the package, pinout, memory, temperature, and supply specifications.
What is the difference between MC9RS08KA4CWG and MC9RS08KA8CWG?
The verified comparison identifies MC9RS08KA8CWG as another RS08KA-family device, while MC9RS08KA4CWG is identified with 4 KB of flash. The supplied results do not provide a complete verified specification table for MC9RS08KA8CWG, so differences in RAM, peripherals, package, and lifecycle cannot be stated reliably. The two parts may share the family architecture, but firmware and PCB substitution requires direct manufacturer or distributor confirmation.
Is MC9RS08KA4CWG suitable for a low-power embedded product?
The verified NXP cross-reference result explicitly describes the MC9RS08KA4CWG as having low-power modes and targeting cost-sensitive 5 V applications. That makes it a reasonable candidate for simple embedded products where compact code, low component count, and power-saving behavior matter. Actual battery life depends on the selected operating mode, clock configuration, peripheral usage, and load current; those operating-current values must be obtained from the manufacturer datasheet.
How do I design a PCB around MC9RS08KA4CWG?
Design the board around the verified 16-SOIC footprint and obtain the official NXP pin assignment before routing. Place the required supply decoupling close to the device power pins, keep sensitive clock and programming routes short, and provide a stable ground reference. The supplied data confirms the package and memory architecture but does not provide pin names, voltage tolerances, ESR requirements, or programming connector details, so those points require direct datasheet verification.
How much does MC9RS08KA4CWG cost and is it in stock?
The verified results provide product and distributor pages but do not include a numeric current price or a reliable inventory quantity for MC9RS08KA4CWG. DigiKey’s result says “Buy now, ships today,” while the NXP page shows end-of-life information; these statements alone do not establish a universal stock level or a fixed price. Request a current quotation and stock confirmation from an authorized distributor as of 2026-10-20 before placing a production order.
What are the key specifications of MC9RS08KA4CWG for engineers?
The MC9RS08KA4CWG is an 8-bit RS08KA microcontroller with a 20 MHz maximum CPU frequency, 4 KB flash, 128 bytes of RAM, 8-bit data width, and a 16-SOIC package. It is intended for cost-sensitive, low-end embedded applications and is associated with low-power modes and 2.5 V, 3.3 V, or 5 V supply options. These headline specifications are useful for architecture selection, while pin-level and timing details still require the official datasheet.
Where can I buy MC9RS08KA4CWG online?
MC9RS08KA4CWG can be investigated through the verified NXP product page, DigiKey listing, and Mouser listing. The DigiKey result identifies the part as an NXP USA Inc. 8-bit, 20 MHz, 4 KB-flash, 16-SOIC microcontroller, and the Mouser result identifies the same NXP device family. Because the part is marked end of life, confirm authorized-channel authenticity, remaining stock, condition, and lifecycle terms in a current quotation as of 2026-10-20.

엔지니어링 참조 데이터: MC9RS08KA4CWG — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose MC9RS08KA4CWG when a legacy or cost-sensitive 5 V embedded design specifically targets the RS08KA architecture, 20 MHz operation, 4 KB flash, and 128 bytes RAM. It is appropriate for compact control logic where the small memory footprint is acceptable and the product is not safety-critical. MC9RS08KA8CWG may be preferable when more memory is required, but that comparison is not verified here. MC9RS08KA4CWGR and MC9RS08KA4CWJ should be selected only after checking the exact NXP ordering suffix and package details. RS08KB candidates may offer a different family path, not necessarily a drop-in replacement. Because the target is marked end of life, new production designs should confirm inventory, lifecycle terms, and an approved migration path.

대체품과의 비교

파라미터 이 제품 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

주요 차별점

  • RS08KA family positioning (vs MC9RS08KB4CWJ)
  • Verified memory configuration (vs MC9RS08KA8CWG)
  • Known package identity (vs MC9RS08KA4CWGR)

설계 노트

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.

규정 준수 정보

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
무연
Unknown
무할로겐
Unknown
분쟁 광물
Unknown

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.

관련 검색

MC9RS08KA4CWG MC9RS08KA4CWG datasheet NXP MC9RS08KA4CWG MC9RS08KA4CWG 20MHz 4KB flash MC9RS08KA4CWG 16-SOIC pinout MC9RS08KA4CWG replacement MC9RS08KA4CWG price and stock MC9RS08KA4CWG lead time MC9RS08KA4CWG buy online RS08KA 8-bit microcontroller MC9RS08KA4CWG low power mode MC9RS08KA4CWG vs MC9RS08KA8CWG MC9RS08KA4CWG end of life MC9RS08KA4CWG embedded control

관련 부품 & 용어

NXP Semiconductors MC9RS08KA4CWG MC9RS08KA8CWG MC9RS08KA4CWGR MC9RS08KA4CWJ MC9RS08KB4CWJ MC9RS08KB8CWJ574 RS08 RS08KA RS08KB 8-bit microcontroller embedded controller central processing unit flash memory RAM 20 MHz 4 KB flash 128 bytes RAM 16-SOIC surface mount low-power modes 5 V application cost-sensitive control end of life NXP product lifecycle
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