S912XET256BVALR - 50MHz 16-Bit 256KB MCU | NXP | Automotive
MPN: S912XET256BVALR ✓ Hoạt độngS912XET256BVALR Tóm tắt
A microcontroller is a programmable embedded-control component that executes firmware, reads sensors, drives actuators, and manages communication interfaces. The S912XET256BVALR belongs to the HCS12X family and combines a 16-bit CPU, on-chip Flash and RAM, analog conversion, timer functions, and communication peripherals in one integrated device. Its 50 MHz operating speed provides a balance between control performance, power consumption, and deterministic response.
Key features include a 12-bit ADC with a stated 3 microsecond conversion time, an XGATE co-processor for offloading selected processing tasks, programmable hardware-emulated EEPROM, memory protection, supervisor and user modes, an enhanced capture timer, a periodic interrupt timer, and a real-time interrupt. These resources support motor, body, powertrain-adjacent, and general vehicle control tasks where predictable interrupt behavior and system integrity matter.
The device is specified for a -40 °C to +105 °C ambient temperature range and an operating supply range shown in the verified distributor data as 1.72 V to 5.5 V. Its 112-LQFP package provides 112 external leads for power, ground, bus, timer, serial, analog, and interrupt functions. Because the package has many pins and mixed peripheral functions, designers should use the official NXP datasheet and reference manual to verify pin multiplexing, alternate functions, decoupling, and board-layout requirements before committing a PCB.
Typical applications include automotive body-control modules, actuator controllers, sensor-interface equipment, industrial embedded controllers, and communication gateways. The 256 KB Flash capacity supports larger embedded applications and boot/update logic, while 16 KB RAM accommodates active control state and peripheral buffers. The 12-bit ADC supports analog sensor acquisition where external conditioning and filtering remain necessary.
Design consideration: validate the power tree, clock configuration, reset behavior, unused-pin treatment, and exact peripheral multiplexing in the NXP documentation. The -40 °C to +105 °C range is useful for harsh environments, but automotive qualification, EMC behavior, transient protection, and production traceability must be evaluated for the complete system rather than inferred from the MCU alone.
This page combines verified distributor specifications, official product-page information, package data, application context, and engineering-oriented comparison notes to help engineers evaluate S912XET256BVALR before schematic capture, PCB layout, sourcing, and qualification.
Bộ thay thế dễ dàng lắp đặt cho S912XET256BVALR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với S912XET256BVALR (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Operating Temperature, Pin Count, Mounting Type.
S912XET256J1CALR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XDT256F1VAA
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XES384J2CAL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XES384J3VAL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XDT384J1MAG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XEQ384F1VAL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
S912XET256BVALR Tỷ lệ tối đa & tính chất điện
| Product Type | 16-bit HCS12X microcontroller |
| Core | S12X / HCS12X |
| Maximum CPU Frequency | 50 MHz |
| Flash Memory | 256 KB |
| RAM | 16 KB |
| ADC Resolution | 12 bit |
| ADC Conversion Time | 3 microseconds |
| Điện áp cung cấp hoạt động | 1.72 V to 5.5 V |
| Nhiệt độ hoạt động | -40 °C to +105 °C |
| Hộp | 112-LQFP, 20 x 20 mm |
| Kiểu lắp đặt | Surface mount |
| XGATE Co-processor | Present |
| Programmable EEPROM Emulation | Supported |
| Memory Protection Unit | Supported |
| Timer Resources | Enhanced capture timer, periodic interrupt timer, and real-time interrupt |
| External Flash | 91, as listed in distributor technical data |
| RoHS | Compliant |
Hướng dẫn cấu hình chân S912XET256BVALR 112-lqfp, 20 x 20 mm
Cấu hình chân cho S912XET256BVALR (112-lqfp, 20 x 20 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho S912XET256BVALR.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
S912XET256BVALR phù hợp cho 6 Áp dụngs: Automotive Body-Control Module, Vehicle Sensor Interface, Motor and Actuator Controller, Industrial Embedded Controller, Automotive Communication Gateway, Programmable Logic and Timing Controller.
Automotive Body-Control Module
The S912XET256BVALR fits body-control modules that combine switch inputs, sensor conditioning, actuator outputs, and diagnostic communication. Its 50 MHz 16-bit S12X core provides deterministic control processing, while 256 KB Flash gives application firmware, diagnostic logic, and communication stacks practical memory headroom. The automotive-qualified identity and -40 °C to +105 °C rating are relevant for cabin and vehicle electronics, although the finished module must still pass its own EMC and environmental validation. The real-time interrupt and periodic interrupt timer support periodic tasks, and the 12-bit ADC supports acquisition from conditioned analog sensors.
Được đề xuất
Vehicle Sensor Interface
Use the S912XET256BVALR as the central controller for a 12-bit analog sensor interface when the system needs local conversion, filtering, and control in a 1.72 V to 5.5 V embedded environment. The verified ADC conversion time is 3 microseconds, allowing periodic sampling when the overall loop and acquisition sequence are designed correctly. The S12X CPU can handle calibration, threshold logic, diagnostics, and communication framing. Since the MCU is not a complete analog front end, input protection, filtering, reference design, grounding, and calibration still require careful implementation.
Được đề xuất
Motor and Actuator Controller
The S912XET256BVALR is suitable for small automotive actuator controllers where deterministic pulse timing, sensor feedback, and protective logic are required. The enhanced capture timer can measure input edges, the periodic interrupt timer can schedule control updates, and the 16-bit S12X core can execute position, speed, or state-machine logic. Its 50 MHz clock provides processing margin, but the designer must budget CPU time for diagnostics and communications. Power-stage drivers, current sensing, protection networks, and thermal management remain external to the MCU and must be validated as part of the motor-control subsystem.
Được đề xuất
Industrial Embedded Controller
The S912XET256BVALR can serve in industrial equipment where deterministic control, local I/O, analog acquisition, and moderate firmware complexity are more important than a high-end application processor. Its 256 KB Flash and 16 KB RAM provide room for control routines, parameter storage, diagnostics, and communication protocols. The -40 °C to +105 °C range supports environments beyond typical room-temperature consumer conditions, but the enclosure, heater, thermal design, and power supply determine whether the system can maintain the MCU within its limits. Memory protection and supervisor/user modes can improve software isolation when firmware partitioning is required.
Được đề xuất
Automotive Communication Gateway
The S912XET256BVALR is a possible fit for a low-level gateway that gathers switch or sensor information, performs local logic, and forwards messages over one or more automotive communication interfaces. Its 16-bit architecture and 50 MHz operating point are useful for protocol handling and deterministic task scheduling, while 256 KB Flash can hold gateway firmware and configuration logic. The verified data does not enumerate the complete communication peripheral set, so interface selection must be checked in the official datasheet. Termination, protection, transient immunity, bus diagnostics, and network sleep behavior are system-level requirements.
Được đề xuất
Programmable Logic and Timing Controller
The S912XET256BVALR can implement programmable sequencing and timing functions using its real-time interrupt, periodic interrupt timer, and enhanced capture timer. This makes it useful in embedded systems that must coordinate switch debouncing, sampling windows, actuator timing, or fault-response sequences with predictable interrupt behavior. The 12-bit ADC can monitor analog conditions when the control task requires feedback beyond digital timing. Firmware structure, interrupt priorities, clock setup, and memory mapping should be reviewed carefully because timer resources share a finite bus and execution budget with other peripherals.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho S912XET256BVALR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | S912XET256J1CALR | S912XDT256F1VAA | S912XES384J2CAL | S912XES384J3VAL | S912XDT384J1MAG |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - package class indicated | 112-LQFP (20x20) - package class indicated | 112-LQFP (20x20) - package class indicated | 112-LQFP (20x20) - package class indicated | 112-LQFP (20x20) - package class indicated |
Bảo phân biệt quan trọng
- Verified automotive-oriented feature set (vsS912XDT256F1VAA)
- 50 MHz S12X control performance (vsS912XET256J1CALR)
- Integrated real-time and memory-integrity resources (vsS912XES384J3VAL)
- 12-bit analog conversion capability (vsS912XDT384J1MAG)
Ghi chú thiết kế
Treat the 112-LQFP as a high-pin-count mixed-signal and embedded-control footprint. Place the required bypass capacitors close to the MCU power pins, route supply and ground planes without uncontrolled splits, and keep analog inputs away from switching nodes and high-current return paths. Verify every pin's alternate function in the NXP datasheet before assigning a net because many MCU functions can be multiplexed.
Validate the 1.72 V to 5.5 V supply range against the actual rail used in the product, including regulator tolerance, startup behavior, transient limits, and peripheral current. The verified data does not state operating current, so do not calculate power budgets from an assumed value. Review the electrical characteristics for each clock mode, peripheral state, temperature, and voltage before finalizing the power supply.
Reserve clean return paths for the 12-bit ADC and its reference network. Place input filtering and protection close to the source or connector, maintain controlled analog routing, and separate ADC traces from clock, PWM, and high-current actuator outputs. The stated 3 microsecond conversion time is a device-level value; total measurement accuracy also depends on acquisition time, source impedance, reference quality, calibration, and firmware processing.
Do not substitute a related S912X family part solely because it has a 112-LQFP package and similar memory capacity. Verify pin names, alternate functions, memory map, clock limits, peripheral set, supply levels, temperature grade, and software device definition. A package match alone does not guarantee drop-in replacement, and the supplied cross-reference data does not provide a manufacturer-confirmed substitute.
Thông tin tuân thủ
The verified NXP product listing identifies S912XET256BVAL as automotive qualified, and the distributor listing identifies RoHS compliance. REACH, lead-free status, halogen-free status, and conflict-minerals status are not provided and remain unknown.
