S912XEQ512J2MAG - 16-bit S12X MCU 512KB 50MHz QFP-144 | NXP
N.º de pieza: S912XEQ512J2MAG ✓ Activo| Cant. | Precio unitario | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
S912XEQ512J2MAG Descripción general
An MCU (microcontroller unit) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals, sitting at the heart of embedded control systems. Within the powertrain and body-electronics hierarchy, the S12X family belongs to NXP's HCS12X line of 16-bit automotive MCUs, bridging the gap between simple 8-bit parts and 32-bit automotive processors.
Key features of the S912XEQ512J2MAG include the XGATE co-processor, which offloads interrupt handling and communication tasks to build virtual peripherals and boost overall system throughput. A flexible, programmable, hardware-emulated EEPROM enables parameter storage without external memory. System integrity is supported by a memory protection unit (MPU) with supervisor and user operating modes, important for safety-relevant automotive software architectures.
On the analog side, the integrated ADC provides 12-bit resolution with a 3 us conversion time, complemented by an on-chip temperature sensor. Timing peripherals include the Enhanced Capture Timer (ECT), Periodic Interrupt Timer (PIT), and Real Time Interrupt (RTI), while serial connectivity is provided through SCI interfaces. These peripherals reduce external component count in body control modules, gateway nodes, and chassis systems.
Typical applications include automotive body control modules, instrument clusters, HVAC controllers, door modules, seat control, and industrial control equipment where an automotive-qualified 16-bit MCU with large Flash is required.
A key design consideration is that the QFP-144 gull-wing package requires careful PCB land-pattern design and solder-reflow profiling; verify the exact speed grade and supply voltage against the manufacturer datasheet before finalizing the power architecture.
This page synthesizes distributor availability data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet. Pricing shown is as of 2026-10-18.
Alternativas directas para S912XEQ512J2MAG — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con S912XEQ512J2MAG (mismo factor de forma y huella) — difiere en Package, Operating Temperature, Flash Memory, Core, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
S912XEQ512J3VAG
✅ Sustitución directa✓ En stock
$10.75 / unidad
Ver hoja de datos →S912XET512J2VAGR
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1 / unidad
Ver hoja de datos →S912XEG384J2CAL
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
S912XET256J2VAG
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
Consulte el precio
Ver hoja de datos →MC9S12XEP768CAG
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$19.85 / unidad
Ver hoja de datos →S912XEQ512J2MAG Valores máximos y características eléctricas
| Core | S12X (HCS12X) 16-bit |
| Core Size | 16-bit |
| Bus Speed | 50 MHz |
| Flash Memory | 512 KB (512K x 8) |
| Co-Processor | XGATE |
| ADC Resolution | 12-bit |
| ADC Conversion Time | 3 us |
| Timers | Enhanced Capture Timer (ECT), Periodic Interrupt Timer (PIT), Real Time Interrupt (RTI) |
| Serial Interfaces | SCI |
| Memory Protection | MPU with supervisor/user modes |
| Temperature Sensor | On-chip |
| Temperatura de funcionamiento | -40 C to +125 C |
| Encapsulado | 144-terminal QFP, square, gull-wing |
| Tipo de montaje | Surface Mount |
| Qualification | Automotive qualified |
Guía de configuración de pines de S912XEQ512J2MAG 144-terminal qfp, square, gull-wing
Configuración de pines para S912XEQ512J2MAG (encapsulado 144-terminal qfp, square, gull-wing). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para S912XEQ512J2MAG.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
S912XEQ512J2MAG es adecuado para 6 aplicacións: Automotive Body Control Module, Instrument Cluster, HVAC Controller, Door and Seat Control Modules, Industrial Control and Automation, Gateway and Communication Nodes.
Automotive Body Control Module
The S912XEQ512J2MAG fits body control modules because its automotive qualification to -40 to +125 C and MPU-based supervisor/user mode separation address the environmental and software-integrity requirements of in-vehicle electronics. Its 12-bit ADC with 3 us conversion time samples switch packs, potentiometers, and diagnostic currents, while the XGATE co-processor offloads LIN/SCI message handling from the 50 MHz S12X main core. The enhanced capture timer (ECT) measures input pulses for wiper and door-cycle feedback. The hardware-emulated EEPROM stores fault codes and configuration data without an external memory device, reducing BOM cost. Designers should budget Flash usage carefully since diagnostics stacks plus calibration tables consume a large share of the 512 KB in feature-rich BCM platforms.
Recomendado
Instrument Cluster
In instrument clusters, the S912XEQ512J2MAG combines a 50 MHz S12X bus with XGATE offload so that stepper-motor gauge control, indicator PWM, and CAN/LIN communication run concurrently without main-core contention. The periodic interrupt timer (PIT) provides deterministic timebases for gauge update rates, and the real time interrupt (RTI) supports timekeeping features. The 12-bit ADC reads fuel-level, coolant-temperature, and backlight-feedback signals at 3 us conversion speed. Automotive qualification to +125 C covers under-dash thermal soak conditions. The 512 KB Flash accommodates odometer storage in hardware-emulated EEPROM plus localized display content, and the MPU with supervisor/user modes helps partition safety-relevant mileage data handling from general display software.
Recomendado
HVAC Controller
Automotive HVAC controllers benefit from the S912XEQ512J2MAG's blend of analog and timing resources: the 12-bit ADC (3 us conversion) digitizes in-cabin and evaporator temperature sensors plus the on-chip temperature sensor for board-level monitoring, while the ECT measures blower-feedback pulses and the PIT schedules damper-motor sequencing. XGATE services actuator PWM channels and SCI/LIN bus traffic, keeping the 50 MHz main core available for control algorithms and diagnostic services. Operation to +125 C satisfies engine-bay-adjacent mounting, and the hardware-emulated EEPROM retains user preference profiles across power cycles. The 144-terminal QFP-144 provides enough gull-wing I/O for a full blend-door, blower, and valve actuation matrix in single- and dual-zone systems.
Recomendado
Door and Seat Control Modules
Door and seat control modules use the S912XEQ512J2MAG's XGATE co-processor as a virtual-peripheral engine: it scans switch matrices, generates window-lift and seat-adjustment PWM, and handles LIN/SCI messaging, while the S12X main core runs stall-detection and anti-pinch algorithms. The 12-bit ADC at 3 us conversion reads Hall-effect position sensors and current-shunt signals for jam detection, and the enhanced capture timer timestamps encoder edges. Qualification from -40 to +125 C covers door-mounted extremes including winter cold-soak and solar load. The 512 KB Flash hosts position-calibration tables in hardware-emulated EEPROM, and the MPU with supervisor and user modes protects calibration data from runaway application code during fault conditions.
Recomendado
Industrial Control and Automation
Beyond automotive, the S912XEQ512J2MAG serves industrial control equipment where a rugged 16-bit MCU with large embedded Flash reduces external memory complexity. The 50 MHz S12X core with XGATE offload handles protocol bridging (SCI-based fieldbus gateways), the 12-bit ADC with 3 us conversion acquires analog process variables, and the ECT/PIT/RTI timers generate control cycles and timestamps. Operation from -40 to +125 C allows use in unconditioned cabinets and outdoor enclosures, and the MPU with supervisor/user modes supports partitioned firmware structures similar to those used in automotive functional-safety flows. The 512 KB Flash accommodates protocol stacks and data logging in the hardware-emulated EEPROM, while the 144-terminal QFP provides sufficient I/O for relay, sensor, and HMI interfacing.
Recomendado
Gateway and Communication Nodes
In gateway and communication nodes, the S912XEQ512J2MAG's XGATE co-processor is the differentiating feature: it acts as a dedicated message processor, buffering and filtering SCI/LIN traffic so the 50 MHz S12X main core performs routing decisions, diagnostics, and security checks in parallel. The 512 KB Flash hosts multiple protocol stacks simultaneously, and the hardware-emulated EEPROM stores node configuration and learn-in data. The PIT provides timebase synchronization across network segments, while the 12-bit ADC supervises supply voltages and the on-chip temperature sensor guards against thermal faults. Automotive qualification to +125 C permits under-hood-adjacent mounting, and the 144-terminal gull-wing QFP exposes the I/O needed to bridge multiple physical sub-networks in one controller.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para S912XEQ512J2MAG — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | S912XEQ512J3VAG | S912XET512J2VAGR | S912XET256J2VAG | MC9S12XEP768CAG |
|---|---|---|---|---|---|
| Package | 144-terminal QFP, gull-wing, square | QFP 144 - same footprint | 144-QFP - same footprint | 144-QFP - same footprint | 144-QFP - same footprint |
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Bus Speed | S12X 16-bit @ 50 MHz | S12X 16-bit @ 50 MHz | S12X 16-bit @ 50 MHz | S12X 16-bit @ 50 MHz | S12X 16-bit @ 50 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB | 768 KB |
| XGATE Co-Processor | Yes | Yes | Yes | Yes | Yes |
| ADC | 12-bit, 3 us conversion | 12-bit | 12-bit | 12-bit | 12-bit |
| Automotive Qualification | Yes | Yes (automotive qualified) | Yes (automotive) | Yes (automotive) | Yes (automotive) |
Diferenciadores clave
- Full -40 to +125 C automotive grade (frente a S912XEQ512J3VAG)
- 512 KB Flash balance (frente a MC9S12XEP768CAG)
- XGATE + MPU system integrity (frente a S912XET256J2VAG)
Notas de diseño
The 144-terminal gull-wing QFP requires a land pattern matched to the JEDEC-style QFP dimensions in the NXP datasheet; keep trace widths at the perimeter pads symmetric to avoid solder wicking imbalance during reflow. Provide 1% or better paste-volume control on fine-pitch corner pads, and add fiducials on two diagonal corners for optical alignment. Route crystal traces short and guard them with ground, since the S12X oscillator at 50 MHz bus speed is sensitive to stray capacitance.
Estimated: verify the supply voltage range in the NXP datasheet before finalizing the 5V rail design, since the S12X family is commonly powered from a regulated 5 V with a separate internal-voltage regulator output capacitor per the datasheet recommendations. Decouple each VDD/VSS pair with 100 nF ceramics placed within 2 mm of the pins, plus bulk 10 uF near the regulator. Do not omit the internal-regulator capacitor - omitting it causes reset glitches during flash program/erase cycles.
When migrating code between S912XEQ512 variants (e.g., from J2MAG to J3VAG), recheck the temperature grade and speed-grade digit in the ordering part number: the digit after 'J' encodes the qualified speed/temperature combination, and running a 50 MHz bus on a lower-graded part violates the datasheet derating. Also confirm that XGATE firmware vectors are re-linked, since peripheral assignment to XGATE versus the S12X core changes across S12XE and S12XT derivatives.
Información de cumplimiento
Verified web data identifies the part as automotive qualified ('Temperature Grade: AUTOMOTIVE' per distributor data). Specific RoHS/REACH/lead-free declarations were not present in the provided data and must be confirmed on the NXP product page.
