S912XEG384AVAGR
S912XEG384AVAGR - 16-Bit 50MHz 384KB Flash MCU | NXP
The NXP Semiconductors S912XEG384AVAGR is an automotive-qualified 16-bit S12X microcontroller operating at 50 MHz, with 384 KB of flash memory and a 144-pin LQFP package measuring 20 x 20 mm. Its specified operating-temperature range is -40°C to +105°C, making it suitable for embedded automotive and industrial control systems requiring deterministic control, automotive qualification, and substantial on-chip program memory.
A microcontroller is a programmable semiconductor system that integrates a CPU core, memory, peripherals, and input/output interfaces on one device. The S12X belongs to the HCS12X 16-bit MCU family within the broader embedded-processing hierarchy: MCU, microprocessor, semiconductor, and electronic component. Its role is to execute application software, acquire sensor data, control actuators, and coordinate communication and timing functions in real-time embedded systems.
Verified features include an XGATE coprocessor, programmable hardware-emulated EEPROM, memory protection and supervisor/user modes, a 12-bit ADC with a stated 3 µs conversion time, an enhanced capture timer, a periodic interrupt timer, and a real-time interrupt timer. These resources support mixed control and signal-processing tasks while reducing the need for external peripheral devices.
The S12X CPU operates at 50 MHz with a 50 MHz bus speed, according to the verified product information. The device provides 384 KB, represented as 384K x 8, of flash memory. Arrow additionally lists operating-voltage values of 1.8 V, 2.8 V, and 5 V, while distributor records identify the device as automotive AEC-Q100 qualified. Exact RAM, EEPROM, peripheral-channel counts, and detailed electrical limits were not included in the supplied data and require confirmation from the manufacturer datasheet.
Typical uses include body or chassis electronics, motor and valve control, instrument-cluster functions, sensor acquisition, automotive communication gateways, and industrial embedded controllers. The 144-pin LQFP provides a high pin count for mixed analog, digital, communication, and external-memory interfaces, although the exact signal mapping must be checked against the package drawing.
When designing around this MCU, verify voltage-domain compatibility, oscillator and reset circuitry, decoupling, programming configuration, unused-pin handling, and AEC-Q100 qualification for the complete production design. The verified distributor references show an observed price from $9.0744 at LCSC and availability at LCSC, Micro-Semiconductor, and DigiKey, but complete quantity-tier pricing was not supplied.
This page consolidates verified distributor data, the official NXP product listing, practical automotive-control considerations, and a conservative replacement assessment without treating electrically similar but unverified MCUs as drop-in parts.
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