S912XET256J2VAG - 16-bit 50MHz 256KB Flash MCU | NXP
Teilenummer: S912XET256J2VAG ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
S912XET256J2VAG Übersicht
A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the complete brain of an embedded system. Within the microcontroller hierarchy, the S912XET256J2VAG belongs to the 16-bit class of embedded microcontrollers, positioned above 8-bit MCUs in arithmetic throughput while remaining simpler than 32-bit application processors. The HCS12X family, originally developed by Freescale Semiconductor and now part of NXP, is a long-lived architecture widely used in body electronics, chassis, and industrial control platforms.
Key differentiating features include the XGATE co-processor, a configurable RISC-style coprocessor that offloads interrupt handling, communication stacks, and I/O tasks from the main S12X CPU, effectively boosting overall system throughput and enabling virtual peripheral implementations. The device also provides flexible, programmable hardware-emulated EEPROM, allowing designers to size nonvolatile data storage in software rather than dedicating fixed EEPROM silicon.
From a system-integrity perspective, the S912XET256J2VAG incorporates a memory protection unit (MPU) together with supervisor and user operating modes, which support layered software architectures and protect critical code from faults in less-trusted routines. This is an important safety and robustness consideration in automotive body and gateway modules. The 256KB FLASH array is programmed in-system, supporting field updates.
Typical applications include automotive body control modules, door and seat control units, instrument clusters, HVAC controllers, and industrial control nodes where a 5V-tolerant 16-bit MCU with rich timers and communication interfaces is preferred. According to the Mouser listing, the part is described as a 16-bit MCU with S12X core, 256KB Flash, 50MHz, -40/+105degC, automotive qualified, in QFP 144.
When designing with this device, verify flash and RAM sizing against code growth over the product lifetime; the 256KB/16KB partition suits mid-size applications, and XGATE code shares system resources, so budget XGATE RAM usage explicitly during architecture definition.
This page synthesizes distributor pricing context, drop-in alternatives, applications, and practical design notes not found in the manufacturer datasheet, providing engineers with a single citable reference for the S912XET256J2VAG.
Drop-in-Alternativen für S912XET256J2VAG – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit S912XET256J2VAG (gleiche Bauform und Footprint) – abweichend in Package, Core Processor, Supply Voltage, Operating Temperature, Core Architecture.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
G912XET256J2VAG
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
S912XET256J2MAA
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
S912XET256W1MAG
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
S912XET256W1MAA
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
S912XET256J2CAA
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
S912XET256J2VAG Grenzwerte & elektrische Eigenschaften
| Core Processor | HCS12X (S12X) |
| Core Size | 16-Bit |
| Maximale Taktfrequenz | 50 MHz |
| Flash Memory | 256KB (256K x 8) |
| RAM | 16KB |
| Co-Processor | XGATE |
| EEPROM | Hardware-emulated, flexible programmable |
| Memory Protection | MPU with supervisor/user modes |
| Gehäuse | 144-LQFP (20x20 mm) |
| Montageart | Surface Mount |
| Betriebstemperatur | -40C to +105C |
| Automotive Qualification | Automotive Qualified |
| Series | HCS12X / S12XE |
| Life Cycle Stage | ACTIVE |
S912XET256J2VAG 144-lqfp (20x20 mm) Pinbelegungsleitfaden
Pinbelegung für S912XET256J2VAG (144-lqfp (20x20 mm)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für S912XET256J2VAG.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
S912XET256J2VAG ist geeignet für 6 Anwendungs: Automotive Body Control Modules, Instrument Clusters, HVAC Control Units, Door and Seat Control Modules, Industrial Control Nodes, Gateway and Network Interface Nodes.
Automotive Body Control Modules
The S912XET256J2VAG fits automotive body control modules (BCMs) because it is explicitly automotive qualified for -40C to +105C operation, matching the ambient envelope of cabin and engine-bay-adjacent modules. Its 256KB flash accommodates lamp management, window/lift, and central locking logic with headroom for calibration data, while 16KB RAM supports state machines and message buffers. The XGATE co-processor offloads CAN and LIN interrupt servicing, keeping the 50 MHz S12X CPU free for real-time control loops. The MPU with supervisor/user modes isolates safety-relevant firmware from diagnostics code. Typically placed on a 5V-class board with hardware-emulated EEPROM storing configuration and fault logs across power cycles, eliminating an external EEPROM device and its associated failure points.
Empfohlen
Instrument Clusters
Instrument clusters require deterministic timing for stepper-motor gauge drive, warning-lamp PWM, and CAN reception of vehicle-speed and engine data - tasks the S912XET256J2VAG handles well with its 50 MHz S12X core and rich timer resources. The 256KB flash stores multi-language display assets and diagnostic datasets; 16KB RAM buffers CAN frames. XGATE concurrently manages CAN traffic and backlight dimming interrupts while the main core drives gauge position control, improving display smoothness at low cost. The automotive-qualified -40C to +105C rating covers sun-load cockpit extremes. Hardware-emulated EEPROM retains odometer and trip data without an external nonvolatile device, and the MPU enforces separation between the odometer-critical firmware and infotainment-facing code paths.
Empfohlen
HVAC Control Units
Automotive and industrial HVAC controllers benefit from the S912XET256J2VAG's blend of flash capacity and peripheral concurrency. Blower-motor PWM control, damper-position servo loops, and temperature-sensor polling all demand concurrent timers, which XGATE services independently of the main S12X CPU running the control algorithm. The 256KB flash holds control tables, self-diagnostic routines, and LIN/CAN stacks for integration with the vehicle or building network. The -40C to +105C automotive-qualified rating survives under-dash thermal cycling. Hardware-emulated EEPROM stores user setpoints and actuator learn data across power interruptions. The 144-pin LQFP offers enough port count to drive stepper dampers, LEDs, and keys directly without port expanders, simplifying the BOM.
Empfohlen
Door and Seat Control Modules
Door modules concentrate window lift, mirror adjust, lock actuator, and switch-matrix handling into one node - an ideal scope for the S912XET256J2VAG. Its many 144-LQFP I/O pins connect the switch matrix and Hall-effect position sensors directly, while XGATE debounces keys and sequences motor PWM without loading the main 50 MHz core. The automotive-qualified -40C to +105C rating and 256KB flash support anti-pinch algorithms and diagnostic trouble-code storage in hardware-emulated EEPROM. The MPU and supervisor/user modes protect motor-control firmware from faulted diagnostics routines. Communication to the BCM runs over LIN or CAN through a companion transceiver, with the MCU's timer channels generating quadrature counting for window position tracking.
Empfohlen
Industrial Control Nodes
In industrial control - pump skids, conveyor nodes, gate controllers - the S912XET256J2VAG offers a dependable 16-bit option with a 50 MHz core, 256KB flash for protocol stacks and control logic, and 16KB RAM for process variables. XGATE runs the communication stack (CAN or RS-485 via SCI) while the main CPU executes PID loops, giving deterministic scan times. The MPU and supervisor/user modes support partitioned firmware with a protected supervisory layer, valuable for equipment subject to audit. Hardware-emulated EEPROM stores configuration and run-hour counters without an external serial EEPROM. The industrial-friendly consequence of its automotive qualification is demonstrated robustness over -40C to +105C, exceeding typical factory-floor ambient requirements with margin.
Empfohlen
Gateway and Network Interface Nodes
The S912XET256J2VAG serves as an economical CAN gateway or protocol-conversion node: XGATE can be dedicated entirely to frame routing, filtering, and buffering between two or more CAN channels and LIN, while the 50 MHz S12X core applies application-level translation logic. The 256KB flash holds multiple protocol stacks and a bootloader for field updates; 16KB RAM is sufficient for multi-frame CAN buffering at typical 500 kbit/s bus loads. The MPU isolates the bootloader from application firmware during reflashing. Hardware-emulated EEPROM preserves network configuration and diagnostic data across power cycles. Its automotive qualification and -40C to +105C range make it equally suitable for vehicle gateways and harsh industrial network segments.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für S912XET256J2VAG – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | G912XET256J2VAG | S912XET256J2MAA | S912XET256W1MAG | S912XET256W1MAA | S912XET256J2CAA |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | LQFP family (ordering variant - verify footprint) | LQFP family (ordering variant - verify footprint) | 144-LQFP (20x20 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Core Size | HCS12X (S12X), 16-bit | S12X, 16-bit | S12X, 16-bit | S12X, 16-bit | S12X, 16-bit | S12X, 16-bit |
| Max Clock Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 256KB (256K x 8) | 256KB | 256KB | 256KB | 256KB | 256KB |
| RAM | 16KB | 16KB | 16KB | 16KB | 16KB | 16KB |
Wichtigste Unterscheidungsmerkmale
- Same-die ordering flexibility within one footprint (vs. G912XET256J2VAG)
- 256KB flash headroom vs 100KB family members (vs. S912XEP100W1MALR)
- XGATE co-processor offload (vs. S912XET256J2MAA (and all S12XE siblings share it, unlike lower S12P-class parts))
Designhinweise
Confirm the exact ordering suffix before release. The S912XET256J2VAG and its siblings (J2MAA, W1MAG, J2CAA) differ in lead finish, packing format, and moisture sensitivity level rather than silicon. Ordering the wrong suffix can delay SMT assembly due to packing mismatches (tray vs tape-and-reel) even though firmware is unchanged. Cross-check the suffix definition table in the NXP ordering information and qualify the specific suffix used in production with your contract manufacturer.
The S12XE family is designed around a 5V-class supply with regulated internal domains; provide decoupling per the datasheet power-supply chapter: bulk capacitance at the VDDR/VDDX pins plus 100 nF ceramics at each supply pin group, placed within a few millimeters of the package. Estimated: the 50 MHz core plus XGATE current draw is modest (tens of mA class), but output drivers driving multiple LED loads can dominate the budget - sum worst-case I/O currents and verify against the datasheet maximum per-port limits.
For the 144-LQFP (20x20 mm), use a 0.5 mm-pitch footprint per the datasheet mechanical drawing and verify land pattern against IPC-compliant footprint data from your CAD library vendor. Route the crystal traces short and guarded, keep CAN/LIN transceiver routing away from the oscillator, and place a solid ground plane on layer 2. The thermal pad requirements are modest for this current class, but flooded thermal vias under the package region improve junction-to-ambient performance in sealed module enclosures.
Budget XGATE RAM and CPU cycles explicitly. Because XGATE shares system resources with the main S12X core, communication stacks written for XGATE consume the same 16KB RAM pool. Teams that assume the full 16KB is available to the application often hit memory exhaustion late in development. Allocate XGATE thread stacks and buffers at architecture definition time, and use the CodeWarrior/XGATE profiler to confirm core arbitration does not starve real-time control loops.
Compliance-Informationen
Listed as Automotive Qualified at -40/+105C on NXP and Mouser product pages. RoHS/REACH/lead-free status not stated in retrieved data - verify on the NXP product page environmental section.
