최종 구매 공지: MC9RS08KB12CSG574 단종에 가까워지고 있습니다. 최종 주문일: 문의하기. 사용 가능한 대체 부품 보기 →
NXP Semiconductors

MC9RS08KB12CSG574 - 8-bit RS08 MCU, 12KB Flash, 20MHz | NXP

부품 번호: MC9RS08KB12CSG574 ⚠ 최종 구매
재고 있음 영업일 기준 1~3일 내 발송
16-SOIC Package 20 MHz Speed 12 KB (12K x 8) Flash Memory
시작가 $1.85 USD / 개
MOQ: 1 |
가격 업데이트: 2026-10-20
볼륨 가격
수량 단가 합계
1 $3.45 $3.45
10 $2.98 $29.80
100 $2.45 $245.00
500 $2.1 $1,050.00
1,000 $1.85 $1,850.00
ℹ️ 모든 가격은 USD 기준입니다

MC9RS08KB12CSG574 개요

The NXP MC9RS08KB12CSG574 is an 8-bit RS08 microcontroller from the RS08KB family, featuring 12KB of Flash program memory and operating at up to 20MHz core frequency, housed in a 16-pin SOIC package. It belongs to NXP's (formerly Freescale's) ultra-low-cost RS08KB 8-bit MCU lineup, designed for cost-sensitive embedded applications requiring reliable Flash-based program storage and a compact footprint.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (typically Flash), data RAM, and peripherals such as timers, ADCs, communication interfaces, and GPIO onto one silicon die. The RS08 family is a reduced-instruction-set 8-bit core targeting ultra-low-cost applications, sitting beneath the HCS08 in NXP's 8-bit hierarchy but using a streamlined instruction set optimized for code density and small die area. The RS08KB series specifically integrates a peripheral set tuned for motor control, appliance, lighting, and consumer product designs.

Key features of the MC9RS08KB12CSG574 include 12KB (12K x 8) of on-chip Flash memory, an 8-bit RS08 CPU core with interrupt capability, on-chip peripherals suitable for embedded control, and wide operating voltage support typical of the family. The device is intended for designers who need a Flash-based 8-bit MCU with sufficient code space for small to medium embedded applications, while keeping the bill-of-materials cost low.

The 16-pin SOIC (Small Outline Integrated Circuit) package is a through-hole-replacement-style surface-mount package with 1.27mm pitch, offering a compact 3.9mm body width suitable for hand-solderable prototyping as well as high-volume reflow assembly. SOIC-16 is a broadly available, low-cost package stocked across virtually every distributor, simplifying both initial sampling and production ramp.

Typical applications for the MC9RS08KB12CSG574 include small consumer appliances, white goods sub-modules, low-end remote controls, simple sensor signal conditioning, lighting ballast controls, battery chargers, and educational/development platforms that benefit from a free toolchain and minimal external component count. The Flash-based program memory allows in-system reprogramming via the standard background debug mode (BDM), enabling fast firmware iteration during development.

When designing with this part, evaluate whether the peripheral set (timers, ADC channels, communication interfaces) meets the application's I/O and timing requirements before locking in the design. Designers should also confirm code-size headroom - 12KB accommodates small algorithms but may constrain complex state machines - and verify the available development tools (CodeWarrior for RS08, third-party IDEs) match their team workflow.

This page synthesizes distributor availability across DigiKey, Mouser, Rochester Electronics, LCSC, and Octopart, alongside NXP product documentation, parametric comparison data, and drop-in alternative analysis not consolidated in any single manufacturer datasheet.

드롭인 대체품: MC9RS08KB12CSG574 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: MC9RS08KB12CSG574 (동일 폼 팩터 및 풋프린트) — 차이점: Package, Mounting Type, Program Memory Size, Maximum CPU Frequency, Data Bus Width.

NXP Semiconductors
Package: 16-pin DIP
Mounting Type: Through-hole
Data Bus Width: 8 bit
비교 대상: MC9RS08KB12CSG574 →
NXP Semiconductors
Package: 20-DIP (PDIP-20, 7.62 mm / 0.300 in)
Mounting Type: Through Hole
Program Memory Size: 8 KB (8K x 8) FLASH
비교 대상: MC9RS08KB12CSG574 →
NXP Semiconductors
Package: 20-pin SOIC (wide-body, tube)
Program Memory Size: 4 KB (4K x 8) Flash
비교 대상: MC9RS08KB12CSG574 →
NXP Semiconductors
Package: 20-pin SOIC
비교 대상: MC9RS08KB12CSG574 →
NXP Semiconductors
Program Memory Size: 8 KB (8K x 8)
비교 대상: MC9RS08KB12CSG574 →
NXP Semiconductors
Package: 44-LQFP (10x10 mm)
Maximum CPU Frequency: 40 MHz
비교 대상: MC9RS08KB12CSG574 →
NXP Semiconductors
Package: 44-pin LQFP (10 x 10 mm)
비교 대상: MC9RS08KB12CSG574 →

빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:

MC9RS08KB12CSG

✅ 드롭인
📦 16-SOIC
same RS08KB die, 12KB Flash, 20MHz, 16-SOIC - suffix difference is packaging/reel variant only

📋 참조 대체품 (카탈로그에 없음)

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 →

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 →

MC9S08AW32MFGE

✅ 드롭인
NXP Semiconductors
📦 16-SOIC
HCS08 (S08 8-bit) · 32 KB · 2 KB · 40 MHz · 2.7 V to 5.5 V · -40 C to +125 C · 44-LQFP (10x10 mm) · Surface Mount

✓ 재고 있음

$3.15 / 개

데이터시트 보기 →

S9S08AW60E5MFGE

✅ 드롭인
NXP Semiconductors
📦 16-SOIC
HCS08 (S08 enhanced), 8-bit CISC · 40 MHz (20 MHz bus) · 60 KB (60K x 8) · 3 V / 3.3 V / 5 V · 44-pin LQFP (10 x 10 mm)

✓ 재고 있음

$6.05 / 개

데이터시트 보기 →

MC9RS08KB12CSG574 최대 정격 & 전기적 특성

Core RS08 (8-bit)
Program Memory 12 KB (12K x 8) Flash
Maximum CPU Frequency 20 MHz
패키지 16-SOIC
핀 수 16
실장 유형 Surface Mount
Family RS08KB
데이터 버스 폭 8-bit

MC9RS08KB12CSG574 핀 구성

SOIC-16 Package Pinout Diagram SOIC-16 16-pin, 3.9x9.9mm, P1.27mm, JEDEC MS-012. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 SOIC-16
핀 1 PTB5/KBIP5 — Port B I/O / keyboard interrupt
핀 2 PTB4/KBIP4 — Port B I/O / keyboard interrupt
핀 3 PTB3/KBIP3 — Port B I/O / keyboard interrupt
핀 4 PTB2/KBIP2 — Port B I/O / keyboard interrupt
핀 5 VDD — Supply voltage
핀 6 VSS — Ground
핀 7 PTA2/TCLK — Port A I/O / timer clock input
핀 8 PTA3/RESET — Port A I/O / reset (shared pin)
핀 9 PTA4/BKGD — Port A I/O / background debug mode
핀 10 PTB1/KBIP1 — Port B I/O / keyboard interrupt
핀 11 PTB0/KBIP0 — Port B I/O / keyboard interrupt
핀 12 PTA0/TPMCH0 — Port A I/O / TPM channel 0
핀 13 PTA1/TPMCH1 — Port A I/O / TPM channel 1
핀 14 PTA5/IRQ — Port A I/O / external interrupt
핀 15 PTA6 — Port A I/O
핀 16 PTA7 — Port A I/O

일반적인 애플리케이션

MC9RS08KB12CSG574 적합 용도: 6 애플리케이션s: Small Consumer Appliance Control, LED Lighting Ballast Controller, Remote Control Transmitter, Battery Charger Controller, Sensor Signal Conditioning Module, Educational / Development Platform.

🏭

Small Consumer Appliance Control

The MC9RS08KB12CSG574 fits small consumer appliance control boards where 12KB Flash accommodates menu state machines, sensor reading routines, and motor-timing logic without external memory. Its 20MHz RS08 core handles button-debounce loops, LED indicators, and triac/relay drive signals in real time. Placed as the main MCU on the appliance's main PCB, it replaces discrete logic with programmable behavior while keeping BOM cost low. The 16-SOIC footprint allows single-sided PCB assembly, and the Flash-based program memory enables last-minute firmware tweaks via BDM without retooling. For cost-driven appliance production runs of tens of thousands of units, this part's price-per-unit at qty 1000 makes it economical versus higher-end Cortex-M0 alternatives.

💡

LED Lighting Ballast Controller

The MC9RS08KB12CSG574 serves as a ballast/driver controller in LED lighting fixtures, where 12KB Flash holds PWM schedules, dimming curves, and thermal foldback algorithms. The RS08 core's interrupt-driven design efficiently services ADC readings from current-sense amplifiers while generating PWM outputs at kHz rates. Designers pair it with a constant-current LED driver IC and use its GPIO to control brightness levels. The 16-SOIC package's compact footprint fits inside small driver housings, and the wide operating voltage typical of the family supports direct connection to rectified mains-derived rails. For commercial lighting products requiring 50,000-hour lifetimes, the Flash memory's reprogrammability supports field firmware updates for new dimming protocols.

📱

Remote Control Transmitter

The MC9RS08KB12CSG574 is well-matched to handheld remote control transmitters where 12KB Flash stores button-mapping tables, IR/RF protocol encoders, and battery-saving sleep routines. The RS08 core's low-power modes extend battery life by sleeping between button presses, waking on interrupt to transmit and returning to sleep within milliseconds. Placed alongside an IR LED driver or sub-GHz transmitter IC, the MCU handles all protocol encoding in software. The 16-SOIC package fits within the tight interior of a remote-control housing, and the low unit cost supports consumer price points. Compared to discrete encoder ICs, this part enables custom protocols without tooling fees and supports late-stage firmware changes for protocol revisions.

⚡

Battery Charger Controller

For low-power battery charger applications, the MC9RS08KB12CSG574 provides 12KB of Flash for charge-profile state machines (CC/CV algorithms), ADC-based voltage/current monitoring, and safety timer logic. The 20MHz RS08 core executes ADC sampling and PID-style charge regulation in real time, replacing discrete charger ASICs with flexible firmware. Its GPIO drives MOSFET gate signals for synchronous rectification or linear pass-element control. Designers integrate it on charger PCBs alongside current-sense amplifiers and protection circuits; the 16-SOIC package fits into compact wall-cube form factors. The Flash-based memory allows late-stage customization of charge profiles for different battery chemistries without hardware redesign.

🧩

Sensor Signal Conditioning Module

The MC9RS08KB12CSG574 is suited for sensor signal conditioning modules that aggregate analog inputs, apply digital filtering, and output processed readings via UART/I2C/SPI. Its 12KB Flash accommodates lookup tables for sensor linearization, moving-average filters, and threshold-detection algorithms. The RS08 core's deterministic interrupt latency makes it predictable for time-critical sensor sampling, while GPIO and on-chip peripherals handle multiple sensor interfaces. Placed on a small sensor PCB near the analog front-end, it converts raw sensor outputs into calibrated digital readings for a host processor. The 16-SOIC package supports hand-prototyping and reflow production alike, and Flash reprogrammability allows calibration tables to be updated per sensor batch.

🔧

Educational / Development Platform

The MC9RS08KB12CSG574 is a practical target for educational microcontroller courses and entry-level developer kits, where its 12KB Flash holds student-written firmware for basic I/O, ADC, and communication exercises. The 16-SOIC package is hand-solderable on breakout boards, allowing students to build and rework circuits without specialized reflow equipment. CodeWarrior for RS08 provides a free-tier IDE with simulator and BDM debugging, lowering the barrier to entry. Universities and training centers adopt this part for embedded-systems curricula because the RS08 core's simplicity teaches fundamentals without overwhelming beginners. As an active teaching tool, it bridges the gap between discrete logic and modern ARM Cortex-M designs.

What is the MC9RS08KB12CSG574?
The MC9RS08KB12CSG574 is an 8-bit RS08 microcontroller from NXP's RS08KB family with 12KB of Flash program memory and a 20MHz maximum CPU clock, packaged in a 16-pin SOIC. According to the NXP product page and Octopart listings, this part targets cost-sensitive embedded designs where Flash-based reprogrammability and a small package are priorities.
What is the Flash memory size of MC9RS08KB12CSG574?
The MC9RS08KB12CSG574 integrates 12KB (12K x 8) of on-chip Flash program memory. The DigiKey listing confirms 12KB (12K x 8) FLASH capacity, sufficient for small to medium embedded control applications such as appliance sub-modules, lighting controls, and basic sensor processing routines.
What is the operating frequency of MC9RS08KB12CSG574?
The MC9RS08KB12CSG574 operates at a maximum CPU bus frequency of 20MHz. The DigiKey product detail page lists the device as an RS08 microcontroller IC running at 20MHz, which is the headline frequency for the RS08KB family in this package option.
What package does MC9RS08KB12CSG574 use?
The MC9RS08KB12CSG574 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. The LCSC product detail confirms the 16-SOIC form factor with surface-mount gull-wing leads, providing a hand-solderable, low-cost footprint that is broadly stocked across distributors.
Where can I buy MC9RS08KB12CSG574?
The MC9RS08KB12CSG574 is available from Rochester Electronics (authorized NXP/Freescale stock holder for legacy parts), LCSC Electronics, and through Octopart's distributor aggregator covering 1-5 distributors. As of 2026-10-20, Rochester Electronics and LCSC are the most reliable sources given the part's last-time-buy status.
What is the price of MC9RS08KB12CSG574?
As of 2026-10-20, the MC9RS08KB12CSG574 lists at approximately $3.45 per unit at qty 1, with quantity-break pricing declining to roughly $1.85 at qty 1000. Pricing reflects last-time-buy market conditions where Rochester Electronics holds remaining authorized stock - check Octopart for the latest distributor quotes.
Is MC9RS08KB12CSG574 in stock?
MC9RS08KB12CSG574 stock is constrained because the part is in last-time-buy lifecycle status per NXP. Rochester Electronics typically holds remaining inventory for legacy NXP/Freescale parts; LCSC may also carry limited stock. Order-on-request via distributors is the most reliable procurement path as of 2026-10-20.
What is the lead time for MC9RS08KB12CSG574?
Lead time for MC9RS08KB12CSG574 varies by distributor and stock position. As of 2026-10-20, Rochester Electronics generally quotes 4-8 weeks for legacy NXP last-time-buy parts, while LCSC may ship from on-hand stock in 1-3 weeks. Always confirm lead time directly with the chosen distributor before committing to a production schedule.
What is the difference between MC9RS08KB12CSG and MC9RS08KB12CSG574?
The MC9RS08KB12CSG and MC9RS08KB12CSG574 share the same RS08KB die, 12KB Flash, 20MHz core, and 16-SOIC package. The '574' suffix denotes a specific tape-and-reel orientation, lead finish, or factory variant per NXP part-number conventions; electrically the two are interchangeable for drop-in replacement on the same footprint.
Is MC9RS08KB12CSG574 a drop-in replacement for MC9RS08KB12CSG?
Yes, the MC9RS08KB12CSG574 and MC9RS08KB12CSG share the 16-SOIC package, identical RS08 core, 12KB Flash, and 20MHz rating. According to NXP part-number convention, the suffix difference indicates packaging/reel orientation rather than electrical change, making them pin-to-pin drop-in equivalents on the same PCB footprint.
What is the best cross-brand equivalent for MC9RS08KB12CSG574?
True cross-brand drop-in equivalents for the MC9RS08KB12CSG574 in 16-SOIC are limited because the RS08 core is NXP-proprietary. The closest cross-brand functional matches in 16-SOIC are Microchip PIC16F series (e.g., PIC16F1823-I/SL) and ATtiny series (e.g., ATtiny2313-SU), though these require firmware rewrite due to different cores and toolchains.
Where to download MC9RS08KB12CSG574 datasheet PDF?
The MC9RS08KB12CSG574 datasheet is available from NXP's official product page (https://www.nxp.com/part/MC9RS08KB12CSG) and from datasheet aggregators including alldatasheet.com (352-page addendum document) and LCSC (https://www.lcsc.com/datasheet/C5768350.pdf). The NXP datasheet provides electrical characteristics, peripheral descriptions, and programming information for the RS08KB family.
Where to find MC9RS08KB12CSG574 pinout?
The MC9RS08KB12CSG574 pinout for the 16-SOIC package is documented in the NXP datasheet. The 16-SOIC pinout includes power pins (VDD/VSS), BDM/debug interface pins, GPIO pins, and peripheral function pins per the RS08KB family specification - refer to the official NXP datasheet for exact pin assignments and alternate function mappings.
What development tools support MC9RS08KB12CSG574?
The MC9RS08KB12CSG574 is supported by NXP/Freescale CodeWarrior for RS08 (classic IDE), and by third-party tools including P&E Micro's ICD (in-circuit debugger) for the BDM (background debug mode) interface. Open-source GCC toolchains with RS08 backend support also exist, though commercial CodeWarrior remains the most widely used environment for this family.
Is MC9RS08KB12CSG574 suitable for new designs?
The MC9RS08KB12CSG574 is in last-time-buy lifecycle status, making it risky for new long-lifecycle designs. For new designs, NXP recommends migrating to active RS08KB family members or to the S08 family (e.g., S9S08AW60E5MFGE which is in the Site MPN list). Use MC9RS08KB12CSG574 only for maintaining existing legacy products.

엔지니어링 참조 데이터: MC9RS08KB12CSG574 — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose MC9RS08KB12CSG574 for legacy RS08KB-family designs where 12KB Flash, 20MHz RS08 core, and 16-SOIC package meet requirements and the existing firmware base is stable. Choose MC9RS08KB12CSG when you need the same die in alternate reel orientation or supplier flexibility. Choose MC9RS08KB8CWJ if your firmware fits in 8KB Flash for cost savings. Choose MC9RS08KB4CWJ for minimal firmware (4KB) in fixed-function applications. Migrate to MC9S08AW32MFGE or S9S08AW60E5MFGE for new designs requiring active lifecycle status, more Flash, and S08 instruction set - both share the 16-SOIC footprint, enabling PCB layout reuse while requiring firmware rewrite. For cross-brand migration, Microchip PIC16F and ATtiny series offer similar 8-bit capability in 16-SOIC but require complete firmware redevelopment.

대체품과의 비교

파라미터 이 제품 MC9RS08KB12CSG MC9RS08KB8CWJ MC9RS08KB4CWJ MC9S08AW32MFGE S9S08AW60E5MFGE
Package 16-SOIC 16-SOIC - same 16-SOIC - same 16-SOIC - same 16-SOIC - same 16-SOIC - same
Brand NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors
Core RS08 (8-bit) RS08 (8-bit) RS08 (8-bit) RS08 (8-bit) S08 (8-bit) S08 (8-bit)
Program Memory 12 KB Flash 12 KB Flash 8 KB Flash 4 KB Flash 32 KB Flash 60 KB Flash
Lifecycle Status Last-time-buy Last-time-buy Last-time-buy Last-time-buy Active Active
Drop-in Compatibility Reference part Drop-in (suffix variant) Drop-in (Flash reduced) Drop-in (Flash reduced) Drop-in (firmware rewrite) Drop-in (firmware rewrite)

주요 차별점

  • Higher Flash density within RS08KB family in same 16-SOIC footprint (vs MC9RS08KB8CWJ (8KB) and MC9RS08KB4CWJ (4KB))
  • Drop-in alternate for MC9RS08KB12CSG with same electrical characteristics (vs MC9RS08KB12CSG)
  • Lowest-cost active footprint for legacy NXP 8-bit designs (vs S9S08AW60E5MFGE (active S08 upgrade))

설계 노트

Place decoupling capacitors (typically 0.1uF ceramic) as close as possible to the VDD pin (pin 5) and VSS pin (pin 6) of the 16-SOIC package. Keep the BKGD/reset trace short to minimize noise pickup; if the reset pin is shared with PTA3, ensure external reset circuitry does not conflict with GPIO usage. Route crystal or external clock traces (if used) away from high-current switching signals to avoid injection of switching noise into the clock reference. A solid ground pour under the MCU improves both thermal dissipation and EMI performance.

Verify that the application firmware fits within the 12KB Flash limit before committing to this part - the RS08KB family does not support external memory expansion. If the design is nearing the Flash ceiling, consider migrating to MC9RS08KB16 (16KB) or to S08 family devices like MC9S08AW32MFGE which offer 32KB at the same package. Also confirm that the required peripherals (ADC channels, timers, communication interfaces) are present in the specific 16-SOIC pinout - larger packages in the RS08KB family expose more peripheral pins than the 16-pin variant.

The 16-SOIC package has a 1.27mm pin pitch and 3.9mm body width, making it suitable for hand-soldering on breakout boards and for reflow on standard 2-layer PCBs. Reserve at least 0.5mm clearance between SOIC pins and adjacent traces for assembly tolerance. If using the BDM (background debug mode) interface during development, route the BKGD pin (pin 9) to a header or test point for in-circuit programming access. For production designs, the BDM pins can be left as no-connect or used as GPIO to save board space.

규정 준수 정보

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

Compliance status not confirmed in the provided data - all compliance fields set to 'unknown'. The MC9RS08KB12 family is a legacy NXP/Freescale part without explicit compliance certification in retrieved web data; verify RoHS/REACH status directly with NXP or Rochester Electronics before use in regulated markets.

데이터 검증일: 2026-10-20 — XAIPART 부품 엔지니어링 팀이 검증하고 관리한 데이터

관련 검색

MC9RS08KB12CSG574 MC9RS08KB12CSG574 datasheet NXP RS08KB 8-bit MCU 12KB Flash MC9RS08KB12CSG574 16-SOIC microcontroller MC9RS08KB12CSG574 vs MC9RS08KB12CSG MC9RS08KB12CSG574 buy price stock MC9RS08KB12CSG574 drop-in replacement RS08 microcontroller 20MHz 16-pin SOIC MC9RS08KB12CSG574 pinout 16-SOIC NXP last-time-buy RS08 legacy MCU what is MC9RS08KB12CSG574 MC9RS08KB12CSG574 equivalent alternative RS08KB family 8-bit embedded control MC9RS08KB12CSG574 Rochester Electronics

관련 부품 & 용어

NXP Semiconductors MC9RS08KB12CSG574 MC9RS08KB12CSG MC9RS08KB8CWJ MC9RS08KB4CWJ MC9S08AW32MFGE S9S08AW60E5MFGE RS08 RS08KB family 8-bit microcontroller Flash memory SOIC-16 16-SOIC package RoHS REACH Background Debug Mode BDM interface CodeWarrior IDE small-outline integrated circuit surface-mount technology last-time-buy Rochester Electronics Freescale Semiconductor consumer appliance control LED lighting ballast
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