S912XET256J1VAG - 16-Bit 50MHz 256KB MCU | NXP | Automotive
MPN: S912XET256J1VAG ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
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S912XET256J1VAG Overview
A microcontroller is a programmable semiconductor device that integrates a processor core, memory, peripherals, and I/O into one component. Within the hierarchy of semiconductors and embedded systems, the S912X belongs to the 16-bit MCU family and combines real-time control, data acquisition, communications, and system-integrity functions. The S12X architecture is intended for automotive and industrial embedded control rather than general-purpose desktop computing.
Verified features include an XGATE co-processor for building virtual peripherals, programmable hardware-emulated EEPROM, a memory protection unit, supervisor and user modes, a 12-bit ADC with a 3 µs conversion time, an enhanced capture timer, a periodic interrupt timer, and a real-time interrupt. These peripherals reduce the need for external components and allow the MCU to handle several time-sensitive functions concurrently.
The part is identified as a 16-bit MCU using the S12X core, with 256 KB flash memory and a 50 MHz S12X CPU and bus speed. Additional verified catalog information reports 16 KB RAM. Because the source material does not provide supply voltage, pin-level multiplexing, memory map, watchdog, communication-interface, or absolute maximum ratings, those values are not inferred here. The 144-pin gull-wing package also requires a footprint with adequate lead clearance and careful signal-routing space.
Typical automotive and industrial uses include body-control modules, actuator controllers, sensor aggregation, diagnostic interfaces, motor-related control, and distributed electronic control units. The S12X CPU handles supervisory logic, while timers support periodic events and the ADC supports analog measurement. The XGATE co-processor can off suitable background processing or virtual-peripheral work, reducing pressure on the main core.
Designers should preserve the exact 144-pin footprint, confirm all peripheral assignments in the manufacturer datasheet, and validate reset, clock, power, debug, and unused-pin requirements before layout release. The -40°C to +105°C rating and automotive qualification make the device relevant to harsh-temperature environments, but they do not by themselves establish every system-level safety requirement.
This product page combines the verified NXP overview, distributor listings, package and temperature information, and practical sourcing context. Pricing and delivery availability remain distributor-dependent and were not fabricated where the supplied web data did not state them.
Drop-in alternatives for S912XET256J1VAG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with S912XET256J1VAG (same form factor and footprint) — differing in Package, Mounting Type, RoHS Status, Core Architecture, Package Code.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S912XET256J1CALR
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View Datasheet →S912XDT256F1VAA
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View Datasheet →S912XEG384J2CAL
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View Datasheet →S912XES384J2CAL
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View Datasheet →S912XES384J3VAL
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View Datasheet →S912XET256J1VAG Maximum Ratings & Electrical Characteristics
| CPU Core | S12X, 16-bit |
| CPU and Bus Speed | 50 MHz |
| Flash Memory | 256 KB |
| RAM Memory | 16 KB |
| Operating Temperature Range | -40 °C to +105 °C |
| Temperature Grade | Industrial |
| Automotive Qualification | Automotive qualified |
| ADC Resolution | 12-bit |
| ADC Conversion Time | 3 µs |
| Coprocessor | XGATE co-processor |
| EEPROM Emulation | Programmable hardware-emulated EEPROM |
| Memory Protection | Memory protection unit |
| Software Protection | Supervisor mode and user mode |
| Timer | Enhanced Capture Timer (ECT) |
| Periodic Timer | Periodic Interrupt Timer (PIT) |
| Real-Time Interrupt | Real Time Interrupt (RTI) |
| Package | 144-terminal gull-wing QFP, square |
| Package Code | LFQFP |
| Lifecycle Status | Active |
| RoHS Status | RoHS compliant |
| Lead-Free Status | Lead free |
S912XET256J1VAG lfqfp Pin Configuration Guide
Pin configuration for S912XET256J1VAG (lfqfp package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for S912XET256J1VAG.
Refer to the datasheet for full pin configuration.
Typical Applications
S912XET256J1VAG is suitable for 6 applications: Automotive Body Control Module, Sensor Acquisition ECU, Actuator and Motor Control, Vehicle Diagnostic Interface, Industrial Embedded Controller, Real-Time Timing Controller.
Automotive Body Control Module
S912XET256J1VAG fits an automotive body-control module because its S12X core runs at 50 MHz, while 256 KB of flash and 16 KB of RAM provide room for control logic and configuration data. The device is identified as automotive qualified and rated from -40 °C to +105 °C. Its 12-bit ADC can acquire sensor signals with a stated 3 µs conversion time, and the ECT, PIT, and RTI support periodic and event-based control. The XGATE co-processor may handle suitable virtual-peripheral tasks while the main CPU manages state-machine logic. Before layout release, verify the exact 144-pin LFQFP footprint, power requirements, pin multiplexing, clocking, and automotive qualification evidence in NXP documentation.
Recommended
Sensor Acquisition ECU
The S912XET256J1VAG is suitable for an ECU that combines analog sensing and digital control. Its 12-bit ADC and 3 µs conversion time provide a concrete starting point for sampling design, while the 50 MHz S12X CPU can process acquired values and control outputs. The 256 KB flash capacity supports embedded firmware, and the 16 KB RAM can support working state and buffers. The real-time interrupt and periodic interrupt timer are relevant to deterministic sampling schedules. The verified data does not specify ADC input count, reference voltage, sample-and-hold behavior, or acquisition timing, so those details must be checked before selecting external front-end components.
Recommended
Actuator and Motor Control
S912XET256J1VAG can serve as the supervisory controller in an actuator or motor-control subsystem. Its 50 MHz S12X core can execute sequencing and diagnostic logic, while the enhanced capture timer can observe timing events and the periodic interrupt timer can schedule recurring control tasks. The memory-protection unit and supervisor/user modes can help organize software access when the application is designed for them. The part is not a dedicated motor-driver IC, so power-stage selection remains external. Use the MCU for command generation and diagnostics, then verify PWM channels, pin assignments, timer limits, and electrical limits against the NXP datasheet before selecting driver transistors.
Recommended
Vehicle Diagnostic Interface
The S912XET256J1VAG is a reasonable candidate for a vehicle diagnostic interface because it combines a 50 MHz 16-bit MCU with 256 KB of flash, 16 KB of RAM, and automotive-oriented qualification. Firmware can maintain diagnostic state, process sensor and actuator information, and execute periodic background tasks. The memory protection unit and separate supervisor and user modes support controlled access to firmware regions. However, the verified data does not identify CAN, LIN, or other communication peripherals, nor does it specify diagnostic protocol support. Those interface requirements must be verified from the exact datasheet before assigning pins or selecting this MCU for a network-connected ECU.
Recommended
Industrial Embedded Controller
S912XET256J1VAG can be evaluated for industrial embedded control where a 50 MHz MCU, 256 KB flash, and -40 °C to +105 °C operating range are useful. The 12-bit ADC supports analog measurement, while the XGATE co-processor can assist with virtual-peripheral or background processing. The 144-terminal QFP provides a substantial connection count for sensors, actuators, communication lines, and power-management signals. The target is listed as industrial temperature grade in one distributor source, but its automotive-qualified status should be confirmed against the exact ordering code. Supply voltage, I/O levels, clock tolerances, and peripheral multiplexing remain unspecified in the supplied data and must be verified before schematic approval.
Recommended
Real-Time Timing Controller
The S912XET256J1VAG is suitable for designs that need deterministic periodic events alongside general embedded control. The verified feature list names the Enhanced Capture Timer, Periodic Interrupt Timer, and Real Time Interrupt, while the 50 MHz S12X CPU provides processing headroom for coordinating those events. The 256 KB flash can hold application code and calibration data, and 16 KB RAM supports active state and small buffers. The memory-protection unit and supervisor/user modes can help separate service code from application tasks. Exact timer widths, clock sources, interrupt priorities, and minimum timing values are not present in the supplied sources, so designers should use the manufacturer timing and pin-mux documentation for implementation.
Recommended
Recommended Products Summary
Engineering reference data for S912XET256J1VAG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S912XET256J1CALR | S912XDT256F1VAA | S912XEG384J2CAL | S912XES384J2CAL | S912XES384J3VAL |
|---|---|---|---|---|---|---|
| Package | 144-terminal square gull-wing QFP (LFQFP) | 144-terminal QFP | 144-terminal QFP | 144-terminal QFP | 144-terminal QFP | 144-terminal QFP |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| CPU Core | S12X, 16-bit | Related S912X device | Related S912X device | Related S912X device | Related S912X device | Related S912X device |
| Flash Memory | 256 KB | 256 KB family association | 256 KB | 384 KB | 384 KB | 384 KB |
Key Differentiators
- Integrated automotive-oriented control platform (vs S912XET256J1CALR)
- Higher verified memory capacity than the 256 KB target family member (vs S912XEG384J2CAL)
- Known ADC and real-time feature set (vs S912XDT256F1VAA)
Design Notes
Treat the 144-terminal gull-wing LFQFP as a fine-pitch assembly constraint. Keep the footprint, pin numbering, land pattern, solder mask, and paste geometry synchronized with the NXP mechanical drawing. Route high-current and sensitive analog nets separately, maintain practical clearance between adjacent signals, and inspect the design for exposed-pad or thermal-copper requirements only after confirming the exact package variant.
Verify clock, reset, debug, and communication routing against the exact pin multiplexing and timing information in the NXP datasheet. The supplied data confirms a 50 MHz S12X CPU and bus speed but does not specify clock-source options or I/O limits. Avoid assigning critical functions based only on a family-level overview, and check source impedance, return paths, decoupling requirements, and unused-pin treatment before release.
Do not assume that a related S912X MPN is a drop-in replacement merely because it is listed in the same family or appears in a site catalog. Confirm all 144 pins, power rails, memory organization, clocking, peripheral assignments, temperature grade, qualification, and software support. The supplied cross-reference results do not provide enough verified detail to guarantee substitution.
Compliance Information
A distributor listing reports lead-free and RoHS-compliant status. The supplied data does not provide REACH, halogen-free, or conflict-minerals evidence. Automotive qualification is reported by the NXP product overview, but the exact qualification document is not included.
