S912XES384J3VAL
S912XES384J3VAL - 16-Bit HCS12X MCU 384KB Flash 112-LQFP | NXP
The NXP S912XES384J3VAL is a 16-bit HCS12X family microcontroller with 384KB of on-chip Flash memory, 50 MHz CPU core, and 112-pin LQFP (20x20 mm) surface-mount package. According to the verified distributor listings, the device ships in the industrial operating temperature grade, ships with GULL WING terminal form, and is sold as a QFP / square package, with the original manufacturer Freescale Semiconductor (later absorbed into NXP). The 'J3' mask/revision designator and 'V' package letter indicate the 112-LQFP industrial-temperature option.
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a rich set of on-chip peripherals such as timers, ADC, communication controllers (SCI/SPI/I2C/CAN), and general-purpose I/O. Within the broader semiconductor taxonomy, MCUs sit inside the embedded-IC family, between microprocessors (MPU) and application-specific standard products (ASSP). HCS12X is NXP's enhanced 16-bit MCU architecture, an evolution of the original HC12 line that adds an XGATE co-processor for offloading interrupt-driven I/O from the main CPU, dramatically improving real-time performance for automotive body, chassis, and industrial control applications. Programmable Flash sizes in this family range from 128KB to 1MB, putting the '384J3' variant in the mid-density range suitable for protocol stacks, motor-control firmware, and gateway nodes.
Key features per verified distributor data include the 16-bit HCS12X CPU at 50 MHz, 384KB (384K x 8) of program Flash, 112-LQFP (20x20 mm) gull-wing package, industrial temperature grade, and a member of the S912X sub-family which is the standard (non-LCD) variant of the S12XE/S12XS series. The XGATE peripheral co-processor provides DMA-style I/O handling at up to 100 MHz, freeing the main S12X core for application logic. On-chip peripherals commonly paired with this mask set include CAN 2.0 controllers, SCI/UART, SPI, I2C, an 8/10/12-bit ADC, PWM modules, and general-purpose timers suitable for BLDC and stepper motor drive.
Typical applications include automotive body-electronics modules (BCM), industrial CAN gateways, HVAC controllers, and sensor-interface nodes where deterministic real-time response to interrupts is mandatory. The S912XE384J3VAL is also well suited to small-format motor-control PCBs because the 112-LQFP package gives 80+ general-purpose I/O lines for parallel keypad scanning, LED drivers, and segmented-display control without an external bus expander.
When designing with this part, confirm the supply voltage (5V typical for HCS12X), regulator sequencing, and the BDM (Background Debug Mode) interface for in-circuit programming. The XGATE co-processor firmware must be developed with Freescale/NXP CodeWarrior or the modern S32DS toolchain to access the full peripheral bandwidth. RoHS-compliant and lead-free versions are standard; for automotive AEC-Q100 qualification, choose a sibling 'J3V' or 'MAA' suffix variant.
USD $14.85
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