MC908QT4VDWR2 - 8-Bit 8MHz 4KB Flash MCU | NXP
MPN： MC908QT4VDWR2 ✗ 停產MC908QT4VDWR2 概覽
A microcontroller is a semiconductor device that integrates a processor core, memory, input/output peripherals, and control logic on one package. The HC08 family belongs to the broader embedded-controller hierarchy: microcontroller, embedded processor, semiconductor, and electronic component. MC908QT4VDWR2 is intended for applications where a small controller can manage digital inputs, timers, communications, and analog-related functions within a constrained board area.
The verified data identifies the principal engineering values as an 8-bit architecture, 8 MHz clock, and 4 KB flash memory. The 8-SO package provides an eight-lead surface-mount format, while the “DWR2” ordering suffix identifies the manufacturer’s package and ordering configuration. Additional electrical details such as RAM, ADC channels, timers, I/O count, voltage limits, and operating temperature were not supplied in the verified data and must be confirmed from the manufacturer datasheet before design release.
Typical uses include small industrial controllers, keypad interfaces, sensor-conditioning controllers, simple motor or relay control, and embedded consumer modules. Because the available information does not establish the complete peripheral map, firmware developers should verify peripheral availability, interrupt behavior, memory organization, and supply limits against the MC908QT4 family documentation.
For a new PCB, use the manufacturer’s package drawing and land pattern rather than estimating SOIC dimensions from generic search results. Confirm the voltage domain, oscillator arrangement, programming method, reset requirements, and exposed-pin assignments before committing a schematic. The listed 8-SO package is also listed by distributors as 8-SOIC, but the exact mechanical drawing should be checked.
This page combines the verified distributor specifications, official datasheet link, package classification, sourcing information, and engineering caveats for MC908QT4VDWR2. It intentionally distinguishes documented values from parameters requiring direct datasheet confirmation rather than estimating missing electrical or peripheral specifications.
直接替換替代品，適用於 MC908QT4VDWR2 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品MC908QT4VDWR2 最大額定值與電氣特性
| Product Type | 8-bit microcontroller |
| Processor Architecture | HC08 |
| Clock Frequency | 8 MHz |
| Program Memory | 4 KB flash |
| Program Memory Organization | 4K x 8 |
| 封裝 | 8-SO |
| Package Type | 8-SOIC surface-mount package |
| Manufacturer | NXP Semiconductors / Freescale Semiconductor |
| Core | 8-bit |
| 安裝類型 | Surface mount |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
MC908QT4VDWR2 8-soic surface-mount package 腳位配置指南
MC908QT4VDWR2（8-soic surface-mount package 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC908QT4VDWR2.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC908QT4VDWR2 適用於 6 應用s: Compact Embedded Control, Simple Sensor Interface, Keypad and User Interface, Small Relay and Actuator Control, Consumer Module Controller, Educational Controller Platform.
Compact Embedded Control
MC908QT4VDWR2 fits compact embedded-control concepts where an 8-bit processor, 8 MHz operation, and 4 KB flash are sufficient. Its 8-SO package can support space-constrained boards, while the HC08 architecture is appropriate for simple sequencing, state machines, and discrete control functions. The verified data does not identify the full I/O, timer, or communication map, so designers must compare the application requirements with the manufacturer datasheet. A prototype should verify startup behavior, interrupt handling, and all required peripheral functions before production release.
推薦
Simple Sensor Interface
The 8-bit MC908QT4VDWR2 can be evaluated for a small sensor interface when the required sensing function, input conditioning, and control outputs fit within the device’s documented resources. Its 4 KB flash provides a defined program-memory budget, while 8 MHz provides a defined CPU operating point. Because the supplied data does not confirm ADC channels, I/O count, RAM, or sensor-interface peripherals, engineers must verify those specifications in the official datasheet and avoid assuming a generic HC08 peripheral map applies.
推薦
Keypad and User Interface
MC908QT4VDWR2 is a reasonable candidate for keypad scanning, button decoding, menu logic, and simple indicator control when the required I/O and timing resources are confirmed. The 8 MHz clock and 8-bit architecture align with basic event-driven user-interface tasks, while the 8-SO package supports compact assembly. The verified data does not specify debounce support, I/O voltage, display interfaces, or RAM, so the design must use the manufacturer pinout and electrical limits. Firmware testing is required before deployment.
推薦
Small Relay and Actuator Control
The microcontroller can be evaluated for relay, solenoid, or actuator sequencing where the system requires deterministic embedded logic and limited program storage. The documented 8-bit HC08 core, 8 MHz operation, and 4 KB flash make it suitable for a basic supervisory control loop, provided the required output drive, isolation, timing, and protection circuitry are added externally. The supplied data does not verify output-drive ratings, timer channels, or relay-interface limits; those must be checked against the datasheet and power-stage design.
推薦
Consumer Module Controller
MC908QT4VDWR2 may suit a small consumer module requiring local control rather than a high-performance processor. The 8-SO package helps minimize board footprint, and 4 KB flash can support compact firmware for configuration, state management, and peripheral coordination. The application should remain within the documented memory and peripheral limits, which were not fully supplied in the verified data. Validate power consumption, wake-up behavior, programming, and production test requirements before selecting the device for volume production.
推薦
Educational Controller Platform
MC908QT4VDWR2 can support an educational embedded-controller platform because its 8-bit architecture, 8 MHz operation, 4 KB flash, and eight-lead package provide a constrained and understandable target for learning firmware, memory, and basic I/O. Students can use the part to build small state-machine or control exercises after confirming the exact pinout and peripheral resources. The supplied data does not include development-board support, programming adapters, or complete electrical limits, so educators should pair the MCU with a documented programmer and a verified reference schematic.
推薦
推薦產品摘要
工程參考資料，適用於 MC908QT4VDWR2 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 8-SO |
| Brand | NXP Semiconductors |
| Architecture | 8-bit HC08 |
| Clock Frequency | 8 MHz |
| Program Memory | 4 KB flash |
| Memory Organization | 4K x 8 |
| Verified Listing Price | $1.9709 as of 2026-10-21 |
主要差異化特點
- Documented 8 MHz HC08 operating point (對比Unverified alternatives in the supplied cross-reference results)
- 4 KB flash memory (對比Unverified alternatives in the supplied cross-reference results)
- Compact 8-SO package classification (對比Unverified alternatives in the supplied cross-reference results)
- Explicit source-price reference (對比No verified alternative price supplied)
設計說明
Use the official MC908QT4 family package drawing to create the 8-SO land pattern. Confirm pin 1 orientation, lead pitch, body width, solder-mask clearance, and reflow profile from the datasheet rather than relying only on the distributor label “8-SOIC.” The verified data identifies the package, but it does not provide the mechanical drawing needed for a production PCB footprint.
Do not select the supply voltage or input capacitors until the official datasheet’s electrical limits and recommended application circuit are available. Place the required supply bypass network close to the device pins and account for the regulator’s startup and load-transient requirements. The verified web data does not state the supply range, so any voltage or capacitance value would be an unsupported design estimate.
Avoid treating MC908QT4VDWR2 as interchangeable with every HC08 or 8-bit MCU. Confirm memory size, pinout, voltage, clock source, programming interface, interrupt vector behavior, and peripheral requirements. The supplied cross-reference results include comparison tools and unrelated microcontroller candidates but do not establish a verified pin-compatible replacement, so migration requires an engineering comparison and bench validation.
Keep oscillator, programming, reset, and sensitive signal paths positioned according to the manufacturer reference layout. Route exposed or vulnerable signals away from noisy switching nodes and preserve the datasheet’s recommended grounding and decoupling topology. Because the supplied data does not specify the complete pin map or analog functions, final layout must be reviewed against the official MC908QT4 documentation before release.
合規資訊
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status for MC908QT4VDWR2. AEC-Q100 is marked not_applicable because no automotive qualification is documented and the component is not identified as an automotive-qualified device.
