MC9S08QD4VSC - 8-bit S08 MCU 4KB Flash SOIC-8 | NXP
부품 번호: MC9S08QD4VSC ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC9S08QD4VSC 개요
An 8-bit microcontroller is an integrated circuit that combines a processor core, memory, and peripherals on a single chip, executing embedded control tasks in appliances, sensors, and small industrial systems. Within the hierarchy of embedded processors, the S08 family descends from the HC08 architecture and occupies the low-cost, low-pin-count end of NXP's 8-bit MCU portfolio, below devices such as the MC9S08DZ and MC9S08AW series.
Key features of the MC9S08QD4VSC include the 20 MHz-capable HCS08 CPU with the added BGND background-debug instruction, on-chip background debugging (BDM) that eliminates the need for an external emulator, single-breakpoint in-circuit debugging, and internal oscillator options that reduce external component count. According to the NXP MC9S08QD4 data sheet, the QD family is the lowest-end member of the S08 8-bit architecture, aimed at cost-sensitive designs.
Technically, the device pairs the CISC HCS08 core with flash-based program memory, allowing field reprogramming, and provides a 10-bit successive-approximation ADC suitable for reading sensors such as thermistors and potentiometers. Its 6 GPIO pins support direct LED drive, switch inputs, and simple serial bit-banged interfaces.
Typical applications include small appliance control, low-end automotive sub-systems (automotive variants are ordered with S-prefixed part numbers such as S9S08QD4), battery chargers, and simple sensor nodes where pin count and cost dominate.
Design consideration: because the MC9S08QD4VSC is an End-of-Life part per the NXP product page, new designs should plan a migration path to active S08/Kinetis devices or secure last-time-buy inventory.
This page synthesizes distributor data, cross-reference information, and drop-in replacement guidance not found in the manufacturer data sheet.
드롭인 대체품: MC9S08QD4VSC — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MC9S08QD4VSC (동일 폼 팩터 및 풋프린트) — 차이점: Package, RAM, Core Processor, Maximum CPU Frequency, Mounting Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MC9S08QD4CSC
✅ 드롭인✓ 재고 있음
가격 문의
데이터시트 보기 →S9S08QD4J1MSCR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
S9S08QD4J2MSCR
✅ 드롭인✓ 재고 있음
$1.55 / 개
데이터시트 보기 →S9S08QD4J1MSC
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MC9S08QD2CSC
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MC9S08SH4MTG
✅ 드롭인✓ 재고 있음
$4 / 개
데이터시트 보기 →MC9S08QD4VSC 최대 정격 & 전기적 특성
| Core Processor | S08 (HCS08) |
| Core Size | 8-bit |
| 최대 클록 주파수 | 16 MHz (bus up to 8 MHz per FindIC; 20 MHz CPU capable per datasheet) |
| Flash Memory | 4 KB (4K x 8) |
| RAM | 256 B |
| ADC Resolution | 10-bit |
| ADC Channels | 4 |
| GPIO Count | 6 |
| Instruction Set | CISC (HC08 with added BGND instruction) |
| Debug Interface | Background Debug Mode (BDM), single breakpoint on-chip |
| 패키지 | 8-SOIC |
| 실장 유형 | Surface Mount |
| Series | MC9S08QD4 |
| 수명 주기 상태 | End of Life (per NXP product page) |
MC9S08QD4VSC 핀 구성
| 핀 1 | PTA2/IRQ — General-purpose I/O / external interrupt request |
| 핀 2 | PTA0/BKGD/MS — General-purpose I/O / background debug / mode select |
| 핀 3 | VSS — Ground |
| 핀 4 | VDD — Power supply |
| 핀 5 | PTA3 — General-purpose I/O / ADC input |
| 핀 6 | PTA4 — General-purpose I/O / ADC input |
| 핀 7 | PTA1 — General-purpose I/O / ADC input |
| 핀 8 | PTA5 — General-purpose I/O / ADC input / reset option |
일반적인 애플리케이션
MC9S08QD4VSC 적합 용도: 6 애플리케이션s: Small Appliance Control, Automotive Body Sub-Systems, Battery Chargers, Simple Sensor Nodes, Legacy Industrial Board Servicing, Educational and Hobby Embedded Projects.
Small Appliance Control
The MC9S08QD4VSC fits small appliance control boards - coffee makers, fans, kettles - where only a handful of I/O lines and minimal cost are required. Its 6 GPIO pins handle button inputs and LED or relay drive outputs, while the 4-channel 10-bit ADC reads thermistor or potentiometer feedback for temperature or speed regulation. The internal clock option removes the need for an external crystal, cutting bill-of-materials cost, and on-chip background debugging lets firmware be flashed and debugged through a single wire without an emulator. Because the part is End of Life, new appliance programs should use it for servicing legacy boards and order the pin-compatible S9S08QD4 variants for continued supply.
추천
Automotive Body Sub-Systems
Automotive-specific orderings of this MCU (S-prefixed S9S08QD4 parts) target low-end automotive functions such as seat-position memory switches, mirror controls, and simple sensor interfaces. The S08 core's deterministic 8-bit execution and 10-bit ADC support switch debouncing and analog level monitoring directly, and the 8-SOIC package conserves PCB area in space-constrained body-electronics modules. Per NXP's QD-family page, QD products were designed for both automotive and industrial low-end applications. Designs qualifying today should specify S9S08QD4J1MSCR or S9S08QD4J2MSCR, which are automotive-graded versions of the same die and footprint as the MC9S08QD4VSC.
추천
Battery Chargers
In low-cost battery charger controllers, the MC9S08QD4VSC reads charge voltage and current through its 4-channel 10-bit ADC and drives PWM-style charge control from its GPIO pins. The 16 MHz HCS08 core provides enough throughput for state-of-charge state machines, taper detection, and fault handling without a heavier processor, and 4 KB flash accommodates complete charging profiles plus firmware headroom for field updates. The small 8-SOIC package suits compact charger PCBs. Because the device is EOL, charger platforms in continued production should qualify the same-footprint S9S08QD4 automotive variants or migrate to the active MC9S08SE4 family, which adds hardware serial interfaces.
추천
Simple Sensor Nodes
For basic sensor acquisition nodes - temperature probes, level detectors, threshold alarms - the MC9S08QD4VSC pairs its 10-bit, 4-channel ADC with minimal code overhead, streaming digitized readings over bit-banged serial lines on its GPIO pins. Flash-based program memory allows in-field reprogramming when calibration or reporting logic changes, and the on-chip BDM interface simplifies factory programming with a single-wire connection. Low pin count and small SOIC-8 footprint support dense, low-cost sensor PCBs. Note that with 256 bytes of RAM, firmware must be written tightly; designs needing buffers or protocol stacks should step up to a larger S08 device such as the MC9S08SG/SE family.
추천
Legacy Industrial Board Servicing
Many installed industrial products - motor start modules, timer relays, HVAC controllers - shipped with the QD4 at their core. For repair and sustaining engineering, the MC9S08QD4VSC (or its identical-footprint alternates MC9S08QD4CSC and S9S08QD4J1MSCR) lets technicians reflash firmware on the original PCB without any layout change. The single-wire background debug interface works with low-cost BDM pods for reprogramming in the field or on the bench. Since NXP has marked the family End of Life, maintainers should execute a last-time-buy proportional to expected service life and qualify the S9S08QD4 automotive variants, which carry extended temperature capability over the standard commercial part.
추천
Educational and Hobby Embedded Projects
The MC9S08QD4VSC remains popular in education and hobby projects because the S08 architecture is well documented, the free CodeWarrior development suite supports it, and the 8-pin SOIC is easy to hand-solder on adapter boards. Six GPIO and a 10-bit ADC are enough for LED experiments, button input, and analog sensing exercises, while single-wire background debugging teaches professional in-circuit debug workflows without expensive tools. Learners should be aware the part is EOL: stock comes from remaining distributor and surplus inventory, and the same QD-family pin-compatible parts listed on this page (MC9S08QD4CSC, S9S08QD4 variants) can be used interchangeably on breadboard adapters and training boards.
추천
추천 제품 요약
엔지니어링 참조 데이터: MC9S08QD4VSC — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MC9S08QD4CSC | S9S08QD4J1MSCR | MC9S08QD2CSC | MC9S08SH4MTG |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | S08 (HCS08), 8-bit | S08 (HCS08), 8-bit | S08 (HCS08), 8-bit | S08 (HCS08), 8-bit | S08 (HCS08), 8-bit |
| Flash Memory | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB |
| Qualification Grade | Standard (commercial/industrial) | Standard | Automotive (S-prefix) | Standard | Standard |
주요 차별점
- Full 4 KB flash in the smallest S08 footprint (vs MC9S08QD2CSC)
- On-chip background debugging without an emulator (vs MC908QY4AMPE)
- Automotive-qualified siblings available (vs S9S08QD4J1MSCR)
설계 노트
The MC9S08QD4VSC is End of Life per the NXP product page. Do not start new designs on this MPN without a supply plan. For legacy builds, verify remaining distributor stock (Octopart aggregates 11 distributors) and qualify MC9S08QD4CSC or S9S08QD4J1MSCR, which share the same die and 8-SOIC footprint. Confirm ordering-code-specific parameters (voltage range, temperature grade) in the MC9S08QD4 data sheet before dropping in an alternate, since suffix letters encode these differences.
The QD4 includes an internal clock source option that removes the external crystal, but internal oscillator accuracy is limited compared to a crystal - for timing-critical UART-style communication, budget tolerance or use an external reference. Always place a 0.1 uF ceramic decoupling capacitor directly across the VDD (pin 4) and VSS (pin 3) pins with short traces; the 8-SOIC layout offers little routing space, so reserve the free GPIO pins adjacent to power for that purpose when planning the PCB.
With only 6 GPIO, pin multiplexing is aggressive: PTA0 doubles as the BKGD/MS single-wire debug pin. Do not load PTA0 heavily in the application circuit, or the background debugger will lose communication during in-circuit flashing. Keep a series resistor (recommended value chosen per the NXP data sheet and BDM pod requirements) between the debug connector and PTA0 so application circuitry and the debug interface can coexist on the same pin.
규정 준수 정보
Compliance details were not stated in the verified web data; consult the NXP product page environmental quality tab for the MC9S08QD4VSC. S-prefixed S9S08QD4 variants are automotive-specific orderings per NXP.
