MC9S08SE4MWL - 8-Bit 20MHz S08 MCU, 4KB Flash | NXP
Артикул: MC9S08SE4MWL ⚠ Последняя закупка| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $4.1 | $4,10 |
| 10 | $3.69 | $36,90 |
| 100 | $3.25 | $325,00 |
| 500 | $2.85 | $1.425,00 |
| 1.000 | $2.5 | $2.500,00 |
MC9S08SE4MWL Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripheral set (timers, ADC, communication interfaces), and I/O into one package. The S08 family belongs to the 8-bit microcontroller hypernym hierarchy: 8-bit MCU -> embedded processor -> microcontroller -> integrated circuit -> semiconductor. It is the cost- and power-optimized tier below 32-bit Cortex-M microcontrollers, and is widely used where deterministic bit-manipulation, ultra-low sleep current, and minimal BOM cost matter more than raw compute throughput.
Key features of the MC9S08SE4MWL include the HCS08 central processor with 20 MHz operation, 4 KB of Flash, on-chip voltage regulator supporting 3.3V/5V operation, multiple timer modules, and standard serial communication peripherals. The wide 2.7V to 5.5V supply range makes it suitable for both battery-powered and industrial 5V bus systems without external level shifters.
Architecturally, the S08SE family uses a von-Neumann bus architecture with a 16-bit address space and an enhanced HCS08 instruction set that is fully compatible with the legacy HC08 ISA. Internal peripherals are clocked from the bus, and the integrated voltage regulator and brownout detector simplify power-supply design. Designers can migrate between S08SE family members (SE4/SE8) with the same toolchain and peripheral set, scaling Flash and RAM without changing the PCB layout.
Typical applications include low-cost 5V industrial control, home appliances, motor control (small BLDC and stepper), sensor nodes, battery chargers, and automotive body electronics. The 28-SOIC package is hand-soldering friendly, making it popular for prototypes and low-volume production.
When designing with the MC9S08SE4MWL, ensure that the BDM (Background Debug Mode) pins are accessible for in-circuit programming, and add a bulk decoupling capacitor near the VDD pin. Avoid routing high-speed signals across the analog AVSS/AVDD pair to minimize ADC noise coupling.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet with selection guidance not found on stock-shop pages.
Аналоги без доработки для MC9S08SE4MWL — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с MC9S08SE4MWL (тот же форм-фактор и посадочное место) — отличается по Package, Flash Memory, Core, Core Processor, Debug Interface.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MC9S08SE8MWL
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC9S08SE4VWL
✅ Прямая замена✓ В наличии
$2.62 / шт.
Открыть даташит →MC9S08SE8VWLR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MC9S08QD4CSC
✅ Прямая замена✓ В наличии
Уточнить цену
Открыть даташит →MC9S08QD4MSC
✅ Прямая замена✓ В наличии
$1.18 / шт.
Открыть даташит →MC9S08SE4MWL Максимальные параметры и электрические характеристики
| Core | HCS08 (8-bit) |
| CPU Clock | 20 MHz |
| Internal Bus Frequency | 10 MHz |
| Program Flash | 4 KB (4K x 8) |
| Корпус | 28-SOIC (W) |
| Напряжение питания | 3.3V / 5V (2.7V to 5.5V range) |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
| Lead Free | Yes |
Конфигурация выводов MC9S08SE4MWL
| Контакт 1 | PTA0/TCLK — Port A bit 0 / external clock input |
| Контакт 2 | PTA1 — Port A bit 1 |
| Контакт 3 | PTA2 — Port A bit 2 |
| Контакт 4 | PTA3 — Port A bit 3 |
| Контакт 5 | PTA4 — Port A bit 4 |
| Контакт 6 | PTA5 — Port A bit 5 |
| Контакт 7 | PTA6 — Port A bit 6 |
| Контакт 8 | PTA7 — Port A bit 7 |
| Контакт 9 | VSS — Ground |
| Контакт 10 | VDD — Positive supply (2.7V to 5.5V) |
| Контакт 11 | PTB0 — Port B bit 0 |
| Контакт 12 | PTB1 — Port B bit 1 |
| Контакт 13 | PTB2 — Port B bit 2 |
| Контакт 14 | PTB3 — Port B bit 3 |
| Контакт 15 | PTB4 — Port B bit 4 |
| Контакт 16 | PTB5 — Port B bit 5 |
| Контакт 17 | PTB6 — Port B bit 6 |
| Контакт 18 | PTB7 — Port B bit 7 |
| Контакт 19 | PTC0 — Port C bit 0 |
| Контакт 20 | PTC1 — Port C bit 1 |
| Контакт 21 | PTC2 — Port C bit 2 |
| Контакт 22 | PTC3 — Port C bit 3 |
| Контакт 23 | PTC4 — Port C bit 4 |
| Контакт 24 | PTC5 — Port C bit 5 |
| Контакт 25 | RESET — External reset (active low) |
| Контакт 26 | BKGD/MS — Background Debug Mode / mode select |
| Контакт 27 | NC — Not connected (per datasheet) |
| Контакт 28 | NC — Not connected (per datasheet) |
Типичное применение
MC9S08SE4MWL подходит для 6 применениеs: Low-Cost 5V Industrial Control, Home Appliance Control, Sensor Node / IoT Edge, Small Motor Control (BLDC / Stepper), Automotive Body Electronics (Auxiliary), Battery Charger / Power Management Front-End.
Low-Cost 5V Industrial Control
The MC9S08SE4MWL's 2.7V to 5.5V supply range and 20 MHz HCS08 CPU make it a strong fit for low-cost 5V industrial control boards such as relay drivers, signal isolators, and small PLC I/O modules. Its 4 KB Flash is sufficient for state-machine logic and Modbus/SCI protocol handling. Compared with newer 32-bit Cortex-M0 parts, the S08SE4 offers a simpler toolchain, BDM debug, and direct 5V I/O without level shifters - a meaningful BOM cost saving for high-volume industrial designs.
Рекомендуется
Home Appliance Control
Washing machines, microwaves, and small kitchen appliances benefit from the MC9S08SE4MWL's 5V tolerance, integrated timers, and small 28-SOIC footprint. The 20 MHz CPU easily handles keypad scanning, seven-segment LED multiplexing, and TRIAC/relay control loops. The 4 KB Flash holds the main control loop plus simple state machine code. NXP's PCN lifecycle status should be checked during design-in, and the 8 KB sibling MC9S08SE8MWL is a natural fit if more code headroom is needed.
Рекомендуется
Sensor Node / IoT Edge
Battery-powered sensor hubs that only need to read a transducer, perform simple math, and transmit over UART benefit from the MC9S08SE4MWL's compact code footprint, low active current, and broad supply range. The HCS08 core supports tight bit-banged protocols and small RTOS loops, while the 28-SOIC package keeps the PCB small. For designs targeting years of battery life, an S08QD or S08PT low-power variant is preferable; for wired sensor nodes the MC9S08SE4MWL remains cost-effective.
Рекомендуется
Small Motor Control (BLDC / Stepper)
Small BLDC and stepper motor controllers - such as 12V fan drivers or NEMA-17 stepper indexers - fit the MC9S08SE4MWL's 20 MHz CPU, fast timer/PWM channels, and 5V tolerant I/O that can directly interface gate drivers. The 4 KB Flash holds a simple six-step commutation table and PWM duty update loop. The pin-compatible MC9S08SE8MWL adds code headroom for closed-loop PID without changing the PCB, which is valuable when iterating motor firmware in production.
Рекомендуется
Automotive Body Electronics (Auxiliary)
The MC9S08SE4MWL is used in non-safety automotive body functions such as interior lighting controllers, seat switches, and small accessory modules where 5V operation and proven HCS08 reliability are valued. Note that the part is not AEC-Q100 qualified per the datasheet, so safety-critical ECUs require an AEC-Q100 part such as the S08QE family. Designers should confirm automotive qualification status directly with NXP via the official PCN documentation.
Рекомендуется
Battery Charger / Power Management Front-End
Simple NiMH or single-cell Li-ion chargers benefit from the MC9S08SE4MWL's on-chip ADC, timer-driven PWM for buck control, and 5V I/O that can directly drive optocouplers or low-side MOSFETs. The 4 KB Flash comfortably holds the CC/CV charge profile, safety timers, and LED status logic. The 28-SOIC package allows the MCU to be placed close to the power-FETs, minimizing gate-loop inductance. Engineers should add a watchdog timer and EEPROM emulation in Flash for production data logging.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MC9S08SE4MWL — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MC9S08SE8MWL | MC9S08SE4VWL | MC9S08SE8VWLR | MC9S08QD4CSC | MC9S08QD4MSC |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | 8-bit HCS08 | 8-bit HCS08 | 8-bit HCS08 | 8-bit HCS08 | 8-bit HCS08 | 8-bit HCS08 |
| CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 8 MHz | 8 MHz |
| Flash Memory | 4 KB | 8 KB | 4 KB | 8 KB | 4 KB | 4 KB |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 |
Ключевые отличия
- Direct 5V I/O without level shifters (против S08PT (32-LQFP) successor)
- 20 MHz CPU for responsive control loops (против MC9S08QD4MSC)
- Pin-compatible 8 KB Flash upgrade path (против MC9S08QD4CSC)
Заметки по проектированию
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 10) on the 28-SOIC, and add a 4.7 uF bulk capacitor nearby. Keep the BKGD/MS trace short and away from switching nodes to avoid false debug-entry events. Use a solid ground pour under the MCU to keep digital return currents low-impedance, and avoid routing high-speed signals across the analog AVSS/AVDD pair (if used) to minimize ADC noise coupling.
The MC9S08SE4MWL is in NXP last-time-buy status - confirm remaining stock with your distributor before committing to a new design. Do not assume the part is in full production; PCN documents can revise lifecycle rapidly. For long-life products, pin-compatible S08SE siblings or the S08PT family (different package) should be evaluated at design-in.
The MC9S08SE4MWL includes an on-chip voltage regulator that derives the internal core supply from the external VDD. Avoid drawing more than the rated current from the VDD/VSS pins, and do not place ferrite beads or inductors in the VDD path - the internal regulator needs a low-impedance supply. Brownout reset is enabled by default; verify the BOD threshold matches the minimum allowed VDD for your design.
Информация о соответствии
RoHS compliant and lead-free per NXP product page. Not AEC-Q100 qualified - use S08QE family for automotive. Halogen-free status to be confirmed with NXP datasheet.
