MC9S12XD64MAA - 16-Bit 80MHz 64KB MCU | NXP | Automotive
料号： MC9S12XD64MAA ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $15.5848 | $15.58 |
| 10 | $15.5848 | $155.85 |
| 100 | $15.5848 | $1,558.48 |
| 500 | $15.5848 | $7,792.40 |
| 1,000 | $15.5848 | $15,584.80 |
MC9S12XD64MAA 概述
A microcontroller is an integrated circuit that executes embedded software and coordinates a product's sensors, actuators, communications, and control functions. The HCS12X architecture provides a 16-bit instruction set compatible with the HCS12 family, an instruction queue, enhanced indexed addressing, and a programmer model compatible with HCS12 products. This places MC9S12XD64MAA within the hierarchy microcontroller, embedded processor, semiconductor, and automotive electronic control unit.
The device combines 64KB of program Flash with 12KB of SRAM and supports both 2.5V and 5V operating descriptions in the supplied data. Its listed peripherals include CANbus, EBI/EMI, I2C, IrDA, LINbus, SCI, SPI, PWM, a watchdog timer, low-voltage detection, and power-on reset. These resources support embedded control and networking designs where deterministic interrupt handling and multiple communication interfaces are useful.
At 80MHz, the S12X core targets control workloads requiring more computational headroom than an 8-bit MCU while retaining a mature 16-bit embedded ecosystem. The verified sources conflict on I/O counts: the NXP listing identifies 59 I/O, while one secondary source states 119 I/O. For conservative PCB and firmware planning, use the package pin assignments in the manufacturer documentation rather than treating both counts as interchangeable.
Typical uses include automotive body and chassis controllers, CAN-based nodes, motor-control peripherals, instrument systems, gateways, and industrial controls adapted to the device's listed operating range. The -40°C to +125°C temperature rating makes the device suitable for harsh environments when the complete design, external components, and qualification requirements satisfy the application.
Layout should preserve the QFP-80 footprint, decoupling requirements, clock stability, and exposed interface constraints from the manufacturer documentation. Because the NXP product page labels the part as end of life, engineers should confirm supply status before a new production release and validate any sourced inventory or alternative against pinout, memory, voltage, timing, and qualification requirements.
This page consolidates manufacturer and distributor findings, lifecycle concerns, sourcing data, and engineering cautions that should be checked against the official NXP documentation before design commitment. The detailed alternative assessment is intentionally conservative because the supplied cross-reference results do not verify enough compatible drop-in parts.
直接替换替代料： MC9S12XD64MAA ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC9S12XD64MAA （相同外形与封装尺寸） ——差异在于 Connectivity, Mounting Type, Operating Temperature, Package, RAM.
快速对比工具——选择替代料号进行并排对比：
MC9S12XD64CAA
✅ 直接替换✓ 有现货
$9.65 / 个
查看数据手册 →MC9S12XD64MAA 最大额定值与电气特性
| Product Type | 16-bit HCS12X automotive microcontroller |
| Core | HCS12X, 16-bit |
| Maximum Clock Speed | 80MHz |
| Program Memory | 64KB Flash (64K x 8) |
| RAM | 12KB |
| 电源电压 | 2.35V to 2.75V |
| Operating Voltage Description | 2.5V/5V |
| Number of I/O | 59 |
| 封装 | 80-QFP (14x14 mm) |
| 工作温度 | -40°C to +125°C |
| Automotive Classification | Automotive |
| Instruction Set Compatibility | Upward compatible with HCS12 |
| Programmer Model Compatibility | Identical to HCS12 |
| Connectivity | CANbus, EBI/EMI, I2C, IrDA, LINbus, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Series | HCS12X |
| Architecture | CISC |
| 安装类型 | Surface-mount QFP |
| 生命周期状态 | End of Life |
MC9S12XD64MAA 80-qfp (14x14 mm) 引脚配置指南
MC9S12XD64MAA（80-qfp (14x14 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC9S12XD64MAA.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC9S12XD64MAA 适用于 6 应用s: Automotive CAN Gateway, Body Control Module, Motor and Actuator Control, Automotive Sensor Node, Industrial Communication Controller, Instrument and Dashboard Controller.
Automotive CAN Gateway
The MC9S12XD64MAA fits an automotive CAN gateway because the verified data lists an 80MHz 16-bit HCS12X core, 64KB Flash, CANbus, and an operating range of -40°C to +125°C. A gateway can translate frames between CAN and another vehicle network while managing diagnostics and local I/O. The 12KB SRAM supports protocol state and buffering, although exact task memory must be measured against the firmware architecture. The design must add an external CAN transceiver, protection network, proper termination, and validated EMC layout. Since NXP identifies the MCU as end of life, use it primarily for maintained platforms until supply and reuse risks are reviewed.
推荐
Body Control Module
The MC9S12XD64MAA is applicable to a body control module where one MCU coordinates discrete inputs and outputs across doors, lighting, locks, or climate-related interfaces. Its listed 59 I/O, PWM, watchdog, low-voltage detection, and power-on reset features support real-time embedded supervision, while the 80MHz HCS12X core provides processing headroom for debouncing, diagnostics, and communication tasks. The QFP-80 package keeps external routing accessible compared with a fine-pitch BGA. Firmware and board validation remain essential because peripheral multiplexing and absolute pin limits must follow the official pin table. An end-of-life strategy should include last-time-buy planning or a qualified migration plan.
推荐
Motor and Actuator Control
The MC9S12XD64MAA can serve as the supervisory controller in a motor or actuator subsystem because the verified features include PWM, SCI, SPI, CANbus, watchdog, and low-voltage detection. The 80MHz processor supports faster control-loop and diagnostic execution, while 64KB Flash accommodates embedded control software and 12KB SRAM retains active state. PWM outputs should drive suitable external drivers rather than power loads directly, and current sensing must use protected analog front ends. Timing, fault handling, and safe output states must be proven under worst-case clock, voltage, and temperature conditions. Because the device is listed as end of life, maintainers should preserve toolchain and stock plans or evaluate a redesign.
推荐
Automotive Sensor Node
The MC9S12XD64MAA is suitable for a distributed sensor node that samples analog or digital inputs, validates them, and reports results over LIN, CAN, or SCI. Its listed I2C and SPI interfaces can connect sensors and external transceivers, while the 80MHz HCS12X core handles acquisition sequencing, filtering, diagnostics, and protocol handling. The verified -40°C to +125°C range supports harsh environments, but the complete module still needs sensor accuracy analysis, protection, calibration strategy, and thermal validation. Firmware should use the watchdog and low-voltage detection to enter safe states during faults. For new designs, lifecycle risk should be balanced against the cost of migrating software and qualification.
推荐
Industrial Communication Controller
The MC9S12XD64MAA can support an industrial communication controller where CANbus, LINbus, SCI, SPI, I2C, or IrDA connectivity is required in a compact embedded controller. The 64KB Flash and 12KB SRAM fit moderate protocol stacks and supervisory logic, and the 80MHz HCS12X core supports multitasking and interrupt-driven communication. Industrial suitability depends on the system's noise, temperature, power, and lifecycle requirements rather than the MCU's automotive labeling alone. Use isolated or protected interfaces where required, validate EMC susceptibility and emissions, and place bypass capacitance according to the official layout guidance. The end-of-life designation should trigger availability monitoring and a planned transition for long-life equipment.
推荐
Instrument and Dashboard Controller
The MC9S12XD64MAA can act as an instrument-cluster or dashboard controller when it must coordinate inputs, indicators, communication links, and diagnostic logic. The listed PWM outputs support display and indicator functions, while CANbus or LINbus can connect the controller to vehicle modules. The 80MHz core provides performance for scheduling, input debouncing, communications, and diagnostics, and the broad -40°C to +125°C range is relevant to vehicle environments. Display drivers and external lighting loads remain outside the MCU and require suitable transistor or driver stages. Firmware should define fail-safe behavior for lost communication, reset, undervoltage, and watchdog events. Any new production design must account for the first-party end-of-life status.
推荐
推荐产品汇总
工程参考数据： MC9S12XD64MAA ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC9S12XD64CAA |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
关键差异点
- Known 80MHz performance and memory configuration （对比 MC9S12XD64CAA)
- Broad verified automotive interface set （对比 MC9S12DG128CFUE)
- Broad stated temperature range （对比 MC9S12C64MFUE)
设计说明
Design the supply network around the verified 2.35V to 2.75V core range and follow the official NXP decoupling values and pin names. Validate startup, reset, brownout, and peripheral behavior at the voltage corners. The supplied sources also use a 2.5V/5V description, but engineers must determine from the complete manufacturer data whether 5V applies to the core, I/O cells, or both before connecting external signals.
Preserve the documented 80-QFP land pattern, pad geometry, and pin numbering when laying out the board. Place required bypass capacitors close to their associated supply pins and keep clock, reset, and high-current return paths short. Do not infer the complete pinout from search snippets; cross-check every net against the current NXP package drawing and account for alternate-function multiplexing.
Do not substitute a similarly named S12X device without checking its complete ordering code, memory map, pin multiplexing, electrical limits, errata, and qualification. The supplied search results mention several related MC9S12 variants but do not establish interchangeable firmware or hardware. Also treat the NXP end-of-life result as a sourcing constraint: record authorized-channel traceability, date code, lot information, and counterfeit-screening evidence.
Configure communications through the documented peripheral pins and validate edge rates, pull-ups or pull-downs, bus capacitance, and interrupt latency in the final board. CAN, LIN, SPI, SCI, I2C, and IrDA have distinct physical-layer requirements, and the MCU pins do not replace external transceivers or protection devices. Run worst-case timing and EMC tests at 80MHz because faster edge behavior can reveal routing or grounding problems not visible at a low clock rate.
合规信息
The verified sources identify the device as automotive and the FindIC listing describes it as automotive, but no explicit AEC-Q100 document or certificate was supplied. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status remain unknown.