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NXP Semiconductors S912XEQ512AVALR
- Part No.:
- S912XEQ512AVALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ512AVALR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
S912XEQ512AVALR from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 512 KB on-chip Flash memory with ECC, 32 KB RAM, and integrated MSCAN, XGATE co-processor, and enhanced ATD. It delivers full CAN performance in body control modules and gateway applications operating at -40°C to 125°C ambient temperature.
For engineers reviewing the S912XEQ512AVALR datasheet, S912XEQ512AVALR pinout, S912XEQ512AVALR application, or S912XEQ512AVALR equivalent, key selection criteria include Flash ECC support, XGATE offloading capability for CAN/LIN, 144-pin LQFP package compatibility, and automotive-grade temperature range compliance.
Technical Context
The S912XEQ512AVALR implements a dual-bus architecture: the 16-bit CPU12X core runs at up to 50 MHz bus frequency, while the XGATE co-processor operates at up to 100 MHz and handles peripheral interrupts-including full CAN mailbox management-without CPU intervention. Its Memory Protection Unit (MPU) defines eight address regions with 8-byte granularity and enforces no-write/no-execute attributes.
It integrates an IPLL clock generator with spread-spectrum modulation for EMC reduction, a dual-channel 10-bit ATD converter with 3 µs conversion time and STOP-mode wake-up capability, and five MSCAN modules supporting CAN 2.0A/B at up to 1 Mbps with hardware timestamping and FULL-CAN operation when paired with XGATE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 instruction set (excluding five fuzzy instructions); enables legacy code reuse with enhanced addressing. |
| Flash Memory | 512 KB with 64+8-bit ECC (1-bit correction / 2-bit detection); supports secure erase/program and automated algorithms for robust firmware updates. |
| RAM | 32 KB SRAM; used for XGATE code/data execution and real-time buffering of CAN/LIN messages without CPU contention. |
| Operating Voltage | 3.3 V ±5% / +10% to 5.0 V +10%; separate VREG and I/O supplies allow independent EMC filtering for noise-sensitive automotive environments. |
| Temperature Range | -40°C to 125°C; qualified for under-hood automotive body control and gateway applications requiring extended thermal reliability. |
| Peripheral Count | 4 CAN modules (CAN0/CAN1/CAN2/CAN4), 6 SCI, 3 SPI, 2 IIC, 8-channel PWM, 8-channel ECT, 8-channel PIT; enables multi-bus vehicle networking with minimal external components. |
| XGATE Performance | Up to 100 MIPS RISC co-processor; executes C code independently, services all peripherals, and enables FULL-CAN with unlimited mailboxes via hardware-triggered interrupt handling. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case number 918-03). Pinout validated per MC9S12XEQ512 Data Sheet Rev. 7 and Freescale S12XE Family Reference Manual.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDX | Core & I/O Power Supply | Dual supply inputs enable independent filtering; VDD powers CPU/XGATE/RAM, VDDX powers I/O ports and analog modules. |
| VSS, VSSX | Core & I/O Ground | Separate ground returns minimize noise coupling between digital logic and analog/peripheral subsystems. |
| RESET | Active-Low Reset Input | Asynchronous reset with internal pull-up; triggers POR, COP timeout, or MPU violation recovery sequences. |
| MODB, MODA | Mode Selection Inputs | Configure boot mode (Normal, Special Boot, Background Debug) at power-on; latched during reset assertion. |
| XTAL, EXTAL | Crystal Oscillator Interface | Supports 4–16 MHz Pierce crystal; connects to internal OSC_LCP module for low-jitter clock generation. |
| CAN0_TX, CAN0_RX | CAN Controller Transceiver Interface | Differential signal pair for CAN0 bus; requires external transceiver (e.g., TJA1042) for physical layer compliance. |
| SCI0_TX, SCI0_RX | UART Serial Interface | Full-duplex NRZ communication port; supports LIN 2.0 master/slave protocol when managed by XGATE. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute policies and triggers non-maskable interrupt on violation-critical for ASIL-B software partitioning. |
| ECC-Protected Flash | 64 data bits + 8 syndrome bits per word; corrects single-bit errors and detects double-bit faults during read/write, ensuring firmware integrity over 15+ year automotive lifecycles. |
| XGATE Co-Processor | Programmable in C; handles CAN mailbox servicing, LIN frame assembly, and ATD result processing autonomously-reducing CPU load by >70% in gateway use cases. |
| IPLL Clock Generator | Internally filtered PLL with spread-spectrum modulation; eliminates external filter components and reduces radiated emissions by up to 10 dBµV/m in 150 kHz–108 MHz band. |
| Enhanced ATD Converter | Two independent 10-bit converters with 3 µs conversion time, internal oscillator for STOP-mode operation, and analog-compare wake-up-enables battery-powered sensor monitoring. |
Applications
| Body Control Module (BCM) | Vehicle Gateway |
|---|---|
|
Use Scenario: Centralized control of lighting, door locks, window lifts, and HVAC actuators in modern passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing body control firmware, managing PWM-driven power outputs, reading analog sensors, and coordinating LIN slave nodes via integrated SCI modules. Use Value: XGATE offloads LIN message scheduling and CAN diagnostics traffic, freeing CPU for real-time actuator control and enabling deterministic response within 50 µs latency windows. |
Use Scenario: Protocol translation and message routing between high-speed CAN-FD backbone and low-speed LIN subnets in electric vehicle architectures. IC Role / Device Role / Timing Role: Dual-CAN/LIN interface controller with hardware timestamping; routes messages between CAN0/CAN1 and SCI0/SCI1 while maintaining strict timing isolation. Use Value: FULL-CAN capability via XGATE allows concurrent handling of >32 CAN mailboxes and 16 LIN frames-eliminating external protocol bridge ICs and reducing BOM cost by $1.20/unit. |
| Chassis Domain Controller | Advanced Lighting Control |
|
Use Scenario: Integration point for brake light, hazard flasher, and turn signal coordination across multiple vehicle zones using shared CAN infrastructure. IC Role / Device Role / Timing Role: Safety-critical node implementing ISO 26262 ASIL-B functions; MPU isolates diagnostic monitor task from main control loop; ECC Flash ensures firmware validity. Use Value: Memory Protection Unit prevents unauthorized code execution and contains fault propagation-meeting ASIL-B requirements without external watchdog co-processors. |
Use Scenario: Adaptive LED headlight system requiring precise PWM dimming, thermal monitoring, and overcurrent protection feedback. IC Role / Device Role / Timing Role: Real-time PWM generator with emergency shutdown input; reads thermistor ADC channels and drives high-side switches via GPIO-controlled pre-driver stages. Use Value: 8-channel 16-bit PWM with center-aligned output and programmable dead-time supports flicker-free LED dimming across 10,000:1 brightness range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MALR | 1 MB Flash, 64 KB RAM, 208-pin MAPBGA; adds non-multiplexed external bus and extra I/O (152 pins vs. 119). | Targeted at high-end gateways requiring external memory expansion and higher I/O count for multi-sensor fusion. | Select when >512 KB Flash or external memory interface is required; not pin-compatible due to package and pinout differences. |
| S912XEQ384JVALR | 384 KB Flash, 24 KB RAM, same 144-pin LQFP package; identical peripheral set except reduced Flash/RAM capacity. | Suitable for cost-optimized BCM variants where firmware footprint fits within 384 KB and EEPROM emulation suffices. | Drop-in replacement only if firmware size ≤384 KB and RAM usage ≤24 KB; shares identical pinout and electrical characteristics. |
Compared with S912XEQ512AVALR, MC9S12XEP100MALR offers greater memory and I/O scalability but requires PCB redesign, while S912XEQ384JVALR provides identical form-factor compatibility at lower memory density-making it viable for derivative designs with constrained firmware footprints.
Availability
S912XEQ512AVALR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, chassis domain controllers, and advanced lighting systems requiring stable component supply across extended product lifecycles.
Supply support for S912XEQ512AVALR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in automotive MCUs dating to Motorola's S12 lineage.
The S12XE family-including S912XEQ512AVALR-is designed specifically for automotive body electronics and gateway applications demanding enhanced system integrity, functional safety support, and long-term supply stability.
FAQ
What is the maximum bus frequency supported by the S912XEQ512AVALR?
The S912XEQ512AVALR supports a maximum CPU bus frequency of 50 MHz and an XGATE bus frequency of 100 MHz. This dual-frequency architecture enables the CPU12X core to execute control tasks while the XGATE co-processor handles time-critical peripheral operations such as CAN message queuing and LIN frame generation-ensuring deterministic real-time behavior in automotive networks.
Does the S912XEQ512AVALR include Error Correction Code (ECC) for Flash memory?
Yes, the S912XEQ512AVALR includes ECC protection on its 512 KB Flash memory, using 64 data bits plus 8 syndrome bits per word to provide single-bit error correction and double-bit error detection. This ECC implementation is hardware-accelerated and transparent to software, ensuring firmware integrity over extended automotive service life without requiring additional software overhead or external memory controllers.
Is the S912XEQ512AVALR pin-compatible with other S12XE family members?
The S912XEQ512AVALR uses a 144-pin LQFP package (case number 918-03) and shares pinout compatibility with other 144-pin S12XE derivatives like S912XEQ384JVALR and S912XEP768MALR. However, it is not pin-compatible with 208-pin MAPBGA or 112-pin LQFP variants due to differing pin counts, signal assignments, and power/ground distribution-PCB layout must match the specific package variant.
What temperature grades are available for the S912XEQ512AVALR?
The S912XEQ512AVALR is qualified for operation across -40°C to 125°C ambient temperature, meeting AEC-Q100 Grade 0 requirements for under-hood automotive applications. This extended temperature range is factory-tested and guaranteed, supporting deployment in engine control units, battery management interfaces, and front-end gateway modules exposed to harsh thermal environments.
How does the XGATE co-processor in the S912XEQ512AVALR improve CAN performance?
The XGATE co-processor in the S912XEQ512AVALR enables FULL-CAN functionality by autonomously managing all MSCAN mailbox operations-including reception filtering, transmission prioritization, and buffer management-without CPU intervention. This offloading reduces CPU utilization by up to 75% during peak CAN traffic and supports concurrent handling of multiple CAN buses (CAN0–CAN4) with hardware timestamping and FIFO-based receive buffers.
S912XEQ512AVALR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 50MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 91
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512AVALR FAQ
1.How can I place an order for S912XEQ512AVALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512AVALR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S912XEQ512AVALR reliable?
The price and inventory of S912XEQ512AVALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512AVALR is usually 5 days.
3.What payment methods are accepted for S912XEQ512AVALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512AVALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512AVALR?
S912XEQ512AVALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512AVALR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S912XEQ512AVALR?
For technical support, including S912XEQ512AVALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512AVALR requirements.
6.How does Aetrix verify that S912XEQ512AVALR is sourced from the original manufacturer or authorized distributors?
All S912XEQ512AVALR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S912XEQ512AVALR meets industry standards.
7.What is the process for return or replacement of S912XEQ512AVALR?
All S912XEQ512AVALR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512AVALR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S912XEQ512AVALR part is unused and in its original packaging.
Return procedure for S912XEQ512AVALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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