MC908QY4ACDWE - 8-Bit 8MHz 4KB Flash MCU | NXP
MPN： MC908QY4ACDWE ✗ 停產MC908QY4ACDWE 概覽
An HC08Q microcontroller is part of the M68HC08 family of 8-bit microcontrollers, which uses a Von Neumann architecture and an enhanced M68HC08 central processing unit. In the broader electronics hierarchy, it is a microcontroller, embedded processor, and embedded-control IC rather than a general-purpose microprocessor or application processor. The architecture is suited to appliance controls, small motor systems, sensor interfaces, and embedded products where an 8 MHz clock and 4 KB Flash footprint are sufficient.
Verified product information identifies a 4K × 8 Flash configuration, 8 MHz operating speed, 8-bit core, 128-byte EEPROM emulation, and a 16-pin SOIC package. The supplied comparison data also indicates operation at either 3.3 V or 5 V, 13 I/O, and family features including PWM, low-voltage detection, and power-on reset. These details make the MC908QY4ACDWE appropriate for low-cost controls requiring compact software and hardware integration.
The device belongs to the HC08Q family, described by NXP as a low-cost, high-performance member of the M68HC08 family. The CPU08 architecture uses CISC instruction processing and a Von Neumann memory organization. This combination supports embedded firmware development for compact control loops, while the Flash memory allows application code to be programmed and updated according to the device's programming requirements.
Typical embedded applications include small appliance controllers, sensor-conditioning nodes, compact fan and motor controls, keypad interfaces, LED status systems, and low-cost industrial control modules. The 16-pin SOIC package is useful where a through-hole assembly process and moderate external pin count are preferred over a very small leadless package.
For a new design, verify voltage limits, timer resources, oscillator options, programming mode, and peripheral pin mapping against the manufacturer datasheet before committing the layout. Existing HC08 designs should also confirm pin-level compatibility and software timing. Because the NXP product page identifies the part as End of Life, long-term production planning should account for lifecycle risk and qualified sourcing.
This page consolidates verified distributor and manufacturer information, distinguishes the device's confirmed architecture and package from unavailable specifications, and provides selection guidance for engineers evaluating the MC908QY4ACDWE or searching for a validated replacement.
直接替換替代品，適用於 MC908QY4ACDWE — 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。
此系列的變體
與下列產品可直接替換的同系列型號： MC908QY4ACDWE （相同外形與佔位） — 差異在於 Package, ADC, Core, RAM Size, Architecture.
MC908QY4ACDTE
✅ 直接替換聯絡詢價
查看資料表 →MC908QY4CDWER
✅ 直接替換📋 參考替代品（不在目錄中）
MC908QY4AMDTE
✅ 直接替換聯絡詢價
查看資料表 →MC908JL3ECPE
✅ 直接替換聯絡詢價
查看資料表 →MC908QY4ACDWE 最大額定值與電氣特性
| Product Type | 8-bit microcontroller |
| Core | HC08 |
| CPU Architecture | Enhanced M68HC08 CPU |
| Instruction Set | CISC |
| Memory Architecture | Von Neumann |
| 最大時脈頻率 | 8 MHz |
| Flash Memory | 4 KB (4K × 8) |
| EEPROM Emulation | 128 bytes |
| Core Width | 8-bit |
| 供應電壓 | 3.3 V or 5 V |
| Number of I/O | 13 |
| Peripheral Features | PWM, LVD, POR |
| 封裝 | 16-pin SOIC |
| 安裝類型 | Surface mount |
| Product Status | End of Life |
| Program Memory Type | Flash |
MC908QY4ACDWE 16-pin soic 腳位配置指南
MC908QY4ACDWE（16-pin soic 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： MC908QY4ACDWE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC908QY4ACDWE 適用於 6 應用s: Compact Appliance Controller, Small Motor and PWM Control, Sensor Conditioning and Status Interface, LED and Display Sequencing, Keyboard and HMI Control, Legacy Embedded-System Maintenance.
Compact Appliance Controller
The MC908QY4ACDWE fits compact appliance-control boards that need an 8-bit MCU without a large application processor. Its 8 MHz enhanced M68HC08 CPU can execute control logic for modes, timers, buttons, indicators, and interlocks, while 4 KB of Flash provides space for a compact application. The 16-pin SOIC package also supports through-hole assembly. Design around the verified 3.3 V or 5 V operation and confirm timer and I/O assignments before finalizing the control PCB.
推薦
Small Motor and PWM Control
The PWM capability identified for the MC908QY4ACDWE makes it a reasonable candidate for small fan, pump, dimmer, or actuator-control applications. The 8 MHz HC08 core can coordinate control sequencing, while the 3.3 V or 5 V operating options allow the controller to match the selected driver interface. The 4 KB Flash limit requires careful code sizing, and the exact PWM channels, timer resolution, output pins, and current-drive capability must be confirmed in the datasheet before driving external power stages.
推薦
Sensor Conditioning and Status Interface
MC908QY4ACDWE can serve as the controller for a small sensor or status-monitoring module when the design requires local decision logic and limited digital I/O. Its 128-byte EEPROM emulation can support nonvolatile configuration values when the application and datasheet confirm the required operating method, while the 13 I/O provide a defined interface for sensors and indicators. The 8 MHz clock is suitable for modest polling and threshold logic, but the supplied data does not verify analog converters or communication peripherals, so those functions require separate review.
推薦
LED and Display Sequencing
The MC908QY4ACDWE is suitable for LED indicators, status lamps, and compact sequencing panels where firmware must update multiple outputs without a high-performance MCU. Its 13 I/O and 8 MHz CPU provide a practical control base for debouncing inputs, driving indicator states, and implementing timing patterns. The 16-pin SOIC package leaves the design dependent on the exact I/O pin map and current limits; use suitable transistor or driver stages rather than driving high-current LEDs directly from unspecified pins. The 4 KB Flash budget should be reserved for essential control code.
推薦
Keyboard and HMI Control
A compact keypad or human-interface module can use MC908QY4ACDWE for debouncing, menu-state logic, indicator feedback, and simple event handling. The HC08 CISC architecture and 8 MHz clock provide sufficient control bandwidth for these tasks, while 13 I/O can support a small button matrix and status interface when the pin assignment allows it. Memory capacity is limited to 4 KB Flash, so interface complexity must be kept modest. Verify external pull components, input thresholds, scanning timing, and package pin availability against the datasheet.
推薦
Legacy Embedded-System Maintenance
MC908QY4ACDWE is most compelling for maintenance of existing HC08-based equipment where preserving firmware, board layout, and peripheral behavior is more important than adopting a new MCU architecture. The 8 MHz CPU, 4 KB Flash, 13 I/O, and 16-pin SOIC package provide a defined baseline for reproducing or servicing a legacy control board. Because the NXP product page marks the device End of Life, production support should include careful stock monitoring, authorized sourcing, firmware archival, and a planned redesign path if long-term availability cannot be secured.
推薦
推薦產品摘要
工程參考資料，適用於 MC908QY4ACDWE — 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 | MC908QY4ACDTE | MC908QY4CDWER | MC908QY4AMDTE | MC908JL3ECPE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC |
| Core | 8-bit HC08 | HC08 family | HC08Q family | HC08Q family | HC08 |
主要差異化特點
- Verified 4 KB Flash and 128-byte EEPROM emulation (對比MC908QY4ACDTE)
- Confirmed 16-pin SOIC package target (對比MC908JK3ECDWE)
- HC08Q architecture with PWM, LVD, and POR (對比MC908JL3ECPE)
- Explicit 3.3 V or 5 V operation (對比MC908QY4CDWER)
設計說明
Do not treat a family relationship as proof of drop-in compatibility. The verified data identifies MC908QY4ACDWE as a 16-pin SOIC HC08Q device, but the supplied comparison results do not provide complete pin names, electrical limits, or suffix equivalence for the candidates. Before substituting a part, compare the NXP ordering table, package drawing, power pins, oscillator connections, programming interface, interrupt sources, and every used GPIO. This is particularly important for an End of Life design where a wrong replacement can create a latent board revision.
The verified operating options are 3.3 V or 5 V, but the complete supply range, current consumption, and I/O thresholds are not present in the supplied data. Design the power tree to maintain the required voltage at the device pins under worst-case load and temperature, and confirm decoupling values against the manufacturer datasheet. Do not infer that every 5 V peripheral can be connected directly to a 3.3 V control signal. Add the required level translation or buffer interfaces and validate power sequencing if the board has mixed-voltage peripherals.
The 16-pin SOIC package favors assembly processes that can handle leaded surface-mount parts. Keep the controller footprint aligned with the verified mechanical drawing, preserve adequate clearance for programming or test access, and route oscillator and sensitive timing paths away from switching nodes. Because the supplied data does not identify the oscillator pins or exact analog requirements, use the official pinout and layout guidance before placing external crystals, capacitors, or decoupling networks.
Reserve a stable firmware and hardware revision record because the product is identified as End of Life. Archive the original MCU programming files, clock settings, peripheral configuration, and approved distributor sourcing information. For repair or clone builds, compare the replacement marking and package dimensions, then perform boundary-scan, continuity, and functional tests at both relevant logic levels where supported. A successful electrical connection is not sufficient evidence that timer, reset, or EEPROM-emulation behavior is equivalent.
合規資訊
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. NXP identifies the product as End of Life.