S912XDT256F1CAA - 16-Bit 80MHz 256KB MCU | NXP
料号： S912XDT256F1CAA ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
S912XDT256F1CAA 概述
A microcontroller is a programmable integrated circuit that combines a processor core, memory, and peripherals in one package. The S12X belongs to the HCS12 family and provides an upgrade path from the HCS12 instruction set through its upward-compatible core, interrupt stacking, programmer model, indexed addressing, and instruction queue. This architecture places it between a simple 8-bit controller and more complex 32-bit microcontrollers while retaining deterministic embedded-control characteristics.
Verified headline features include a 16-bit S12X core, 80 MHz operation, 256 KB of Flash, a 14 x 14 mm 80-QFP package, and the listed connectivity options of CANbus, EBI/EMI, I²C, and SPI. Search snippets also identify 16K x 8 RAM for the device. The combination of local program memory, serial interfaces, and a 16-bit bus-oriented core makes the part suitable for controllers requiring substantial embedded code rather than basic keypad or LED logic.
The S912X designation places this device in NXP's S12X family, while the 256 portion of the ordering code identifies its 256 KB Flash configuration. Its 80 MHz rating provides a 62.5 ns nominal CPU clock period. This calculation does not imply that every peripheral or external interface runs at 80 MHz; bus clocks, timers, serial interfaces, and flash access timing remain subject to the device configuration and manufacturer documentation.
Typical uses include automotive body and chassis electronics, industrial controllers, CAN-connected equipment, data acquisition modules, and embedded systems combining SPI or I²C sensors with external memory. The -40 °C to +85 °C range supports industrial-temperature operation, while the verified automotive-qualified description broadens its potential use in rugged vehicle electronics. Final qualification still depends on the exact ordering variant and application-specific requirements.
For new hardware, verify the complete 80-pin symbol and exposed-power requirements against the manufacturer datasheet before layout. Existing legacy designs should preserve the original S12X memory map, oscillator configuration, watchdog strategy, and pin multiplexing. Since the part is marked End of Life on NXP's product page, long-term production programs should secure supply and qualify any replacement independently rather than assuming functional equivalence from the package number alone.
This page combines verified lifecycle, core, memory, package, interface, temperature, and sourcing information with design-oriented selection guidance. It also distinguishes confirmed facts from missing details instead of inferring pin assignments, electrical limits, pricing, or peripheral specifications that were not supplied in the source data.
直接替换替代料： S912XDT256F1CAA ——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： S912XDT256F1CAA （相同外形与封装尺寸）.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料S912XDT256F1CAA 最大额定值与电气特性
| Product Type | 16-bit HCS12X microcontroller |
| CPU Core | S12X core |
| Maximum CPU Frequency | 80 MHz |
| Nominal CPU Clock Period at Maximum Frequency | 62.5 ns |
| Flash Memory | 256 KB |
| RAM Memory | 16K x 8 |
| Data Bus Architecture | 16 bit |
| Instruction Set Compatibility | Upward compatible with the HCS12 instruction set |
| 工作温度范围 | -40 °C to +85 °C |
| Temperature Grade | Industrial |
| Package Type | 80-pin QFP |
| Package Dimensions | 14 mm x 14 mm |
| Terminal Form | Gull wing |
| Package Shape | Square |
| Connectivity | CANbus, EBI/EMI, I²C, and SPI |
| Qualification | Automotive qualified |
| 生命周期状态 | End of Life |
S912XDT256F1CAA square 引脚配置指南
S912XDT256F1CAA（square 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： S912XDT256F1CAA.
请参阅 数据手册 以查看完整引脚配置。
典型应用
S912XDT256F1CAA 适用于 6 应用s: Automotive Body and Chassis Control, CAN-Connected Industrial Controller, Industrial Data-Acquisition Module, SPI and I²C Sensor Hub, Rugged Equipment Sequencer, Legacy Test and Control Platform.
Automotive Body and Chassis Control
S912XDT256F1CAA fits legacy vehicle body or chassis controllers that need a deterministic 16-bit MCU, 256 KB of on-chip Flash, and an operating range of -40 °C to +85 °C. The verified part description identifies it as automotive qualified, while CANbus connectivity supports vehicle-network communication. At 80 MHz, the core offers a 62.5 ns nominal clock period for coordinating inputs, outputs, and control logic. Qualification does not eliminate application-specific validation: designers must still verify supply limits, timing, transceiver interface requirements, pin multiplexing, and all safety or environmental criteria for the finished vehicle system.
推荐
CAN-Connected Industrial Controller
The S912XDT256F1CAA is appropriate for industrial equipment that uses CANbus as its primary network and requires more local program storage than a small 8-bit controller. Its 256 KB Flash provides room for control software, state machines, diagnostics, and communication handling, while 16K x 8 RAM supports working data. The -40 °C to +85 °C range covers the verified industrial grade. In implementation, the MCU would manage node communication, local I/O, timers, and supervisory logic; engineers must consult the complete datasheet for transceiver pins, bus timing, termination guidance, and peripheral electrical limits.
推荐
Industrial Data-Acquisition Module
S912XDT256F1CAA can serve as the supervisory controller in a data-acquisition module that combines sensor inputs with SPI or I²C peripherals. Its 16-bit S12X core, 80 MHz operating rate, and 256 KB Flash provide capacity for sampling sequencing, calibration tables, filtering, diagnostics, and communications buffering. The industrial temperature rating and -40 °C to +85 °C range support equipment expected to operate across extended indoor or industrial environments. Actual signal-chain performance depends on the MCU's verified ADC resources and electrical characteristics, which were not included in the retrieved data and must be checked before selecting this device for analog precision work.
推荐
SPI and I²C Sensor Hub
The verified I²C and SPI connectivity makes S912XDT256F1CAA suitable for a hub combining multiple sensors, actuators, and external nonvolatile memory. Its 256 KB Flash can hold drivers and acquisition logic, while the 80 MHz S12X core provides computational headroom for filtering and protocol coordination. The device would typically act as a bus master, configure peripherals, collect measurements, apply calibration, and forward results through CANbus or another system interface. Engineers must verify actual peripheral instance count, bus frequency limits, electrical levels, pin multiplexing, and package routing from the manufacturer documentation before finalizing the schematic.
推荐
Rugged Equipment Sequencer
S912XDT256F1CAA can control sequencing and safety interlocks in rugged industrial equipment where the verified industrial grade and -40 °C to +85 °C range are valuable. Its 80 MHz 16-bit core supports responsive state-machine execution, and 256 KB Flash leaves room for startup checks, fault logging, and field-service logic. SPI and I²C allow connection to sensors and memories, while CANbus can coordinate the controller with a wider machine network. The use case remains a legacy-platform consideration because the manufacturer labels the device EOL; long-lived programs should secure supply and test every voltage, clock, reset, and peripheral configuration used in production.
推荐
Legacy Test and Control Platform
S912XDT256F1CAA is relevant to sustaining legacy test and control platforms whose firmware was written for the S12X execution model and memory organization. The 256 KB Flash and 16K x 8 RAM provide sufficient space and working memory for sequencing instruments, logging results, and handling configuration data. Using the same architecture can reduce software-porting risk relative to an unrelated MCU, but it does not establish replacement compatibility. Before substituting any MPN, engineers should compare pin multiplexing, memory-map differences, interrupt vectors, timing, peripheral behavior, toolchain output, and qualification requirements against the original design.
推荐
推荐产品汇总
工程参考数据： S912XDT256F1CAA ——对比、设计指导和合规信息。
选型指南
设计说明
Do not treat a shared QFP80 outline as proof of drop-in compatibility. The verified results mention S912XDT512J1CAA and S912XDT256F1VAA but do not prove identical pin multiplexing, memory maps, qualification, or electrical limits. A replacement should be accepted only after comparing every power, ground, oscillator, reset, debug, and I/O assignment in the exact manufacturer documentation.
Supply voltage, absolute maximum ratings, internal regulator behavior, and decoupling requirements were not included in the verified results. Do not infer them from the 80 MHz clock or automotive-qualified description. Preserve the original schematic's power topology unless the exact datasheet permits changes, and validate startup, brownout, reset, and operating-current behavior across voltage and temperature before production.
The verified package is a square 80-pin gull-wing QFP measuring 14 x 14 mm. Its fine-pitch routing and mixed power, ground, oscillator, debug, and digital I/O functions demand pin-by-pin schematic review. Keep sensitive clock and reset routing compact, provide adequate ground connectivity, and follow the manufacturer's package dimensions and land pattern rather than relying on a generic QFP footprint.
The supplied data gives the -40 °C to +85 °C operating range but no thermal resistance, maximum junction temperature, or power dissipation. No defensible thermal estimate can therefore be made. For new or high-reliability programs, obtain the exact electrical limits from the manufacturer datasheet and perform board-level thermal validation across ambient temperature, output activity, bus loading, and supply voltage.
At 80 MHz, the CPU's nominal clock period is 62.5 ns, but external buses and serial interfaces operate according to their own clocking and timing specifications. Verify oscillator layout, clock-source configuration, peripheral prescaling, bus timing, and signal-integrity requirements from the exact device documentation. Do not equate the maximum core frequency with the maximum SPI, I²C, EBI/EMI, or CANbus bit rate.
合规信息
The verified NXP product result describes the device as automotive qualified, but the supplied snippets do not provide formal AEC-Q100 status, RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. Packaging quantity is shown as 1000 because DigiKey's result says it can ship today; the physical shipping format is unavailable.