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NXP Semiconductors S912XEQ512J2CALR
- Part No.:
- S912XEQ512J2CALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ512J2CALR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,665
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Product details
Overview
S912XEQ512J2CALR 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.
For engineers reviewing the S912XEQ512J2CALR datasheet, S912XEQ512J2CALR pinout, S912XEQ512J2CALR application, or S912XEQ512J2CALR equivalent, key selection criteria include its 50 MHz bus frequency, dual ATD converters (8/10/12-bit), 4-channel MSCAN support, 144-pin LQFP package with non-multiplexed external bus interface, and MPU-enabled system integrity for ASIL-B–aligned automotive designs.
Technical Context
The S912XEQ512J2CALR implements the CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), supports 16-bit wide zero-wait-state peripheral and memory accesses, and integrates an XGATE co-processor running at 100 MHz to offload CAN, LIN, and SPI communications. Its Memory Protection Unit defines eight address regions with 8-byte granularity and enforces no-write/no-execute attributes.
It features a Frequency Modulated PLL (IPLL) for EMC reduction, ECC-enabled Flash with 1-bit correction/2-bit detection, and dual independent ATD modules with 3 µs 10-bit conversion time and internal oscillator support for Stop-mode operation. The device includes four MSCAN modules compliant with CAN 2.0A/B, supporting up to 1 Mbps bit rate and FULL-CAN capability when coordinated with XGATE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 ISA (excluding MEM/WAV/REV instructions); enables legacy code reuse without recompilation. |
| Flash Memory | 512 KB with ECC (64 data + 8 syndrome bits); provides single-bit error correction and double-bit fault detection for ASIL-B functional safety compliance. |
| RAM | 32 KB SRAM; sufficient for real-time task stacks, XGATE buffers, and CAN mailbox management in multi-bus gateway applications. |
| Bus Frequency | 50 MHz CPU bus / 100 MHz XGATE bus; enables deterministic interrupt latency and high-throughput peripheral servicing without CPU contention. |
| ADC Resolution | 8/10/12-bit configurable ATD with 16-channel multiplexer and 3 µs 10-bit conversion; supports precise sensor monitoring in body electronics. |
| CAN Modules | 4 MSCAN modules (CAN0/CAN1/CAN2/CAN4); enables simultaneous communication across powertrain, chassis, and infotainment domains. |
| Operating Temp | -40°C to 125°C ambient; qualified for under-hood and transmission control unit deployment per AEC-Q100 Grade 0. |
| Package | 144-pin LQFP (20×20 mm, 0.5 mm pitch); supports non-multiplexed external bus for glueless connection to external Flash or RAM. |
Pinout & Package
144-pin LQFP package (case number 918-03), 20 mm × 20 mm body, 0.5 mm pitch, RoHS-compliant, with exposed thermal pad. Pinout validated per MC9S12XE Data Sheet Rev. 7 and Freescale Application Note AN3731.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Separate 5V supplies for core logic, analog peripherals, and PLL enable optimized EMC filtering and noise isolation. |
| VSS, VSSA, VSSPLL | Ground returns | Dedicated ground planes per supply domain reduce coupling between digital switching noise and analog/PLL circuits. |
| XTAL, EXTAL | Crystal oscillator terminals | Support 4–16 MHz Pierce crystal; internal transconductance sizing ensures reliable startup across temperature and voltage extremes. |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered input with internal pull-up; initiates POR, COP timeout, or low-voltage reset recovery sequence. |
| CS0–CS3 | Chip select outputs | Configurable wait-state timing for external memory interfacing; enables direct connection to ASYNC SRAM/Flash without glue logic. |
| MSCAN0_TX/RX | CAN physical layer interface | Differential signaling pins compliant with ISO 11898-2; require external CAN transceiver (e.g., TJA1042) for bus termination and level translation. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 programmable address regions with 8-byte granularity; enforces no-write/no-execute policies to isolate firmware tasks and prevent unintended memory corruption. |
| XGATE Co-processor | 100 MIPS RISC engine handling CAN/LIN/SPI interrupts autonomously; frees CPU for application logic while maintaining <1 µs response to CAN message arrival. |
| ECC Flash & D-Flash | 64+8-bit ECC per word in main Flash and 32 KB D-Flash with 256-byte sectors; enables field-upgradable firmware with guaranteed data integrity over 100k erase cycles. |
| IPLL Clock Generator | Frequency-modulated PLL with spread-spectrum option; reduces peak EMI by >10 dB in 150 kHz–108 MHz band for automotive EMC certification. |
| Enhanced ATD | Dual independent converters with internal oscillator, wake-up on analog compare, and left/right-aligned results; supports battery voltage monitoring and cabin temperature sensing simultaneously. |
| Background Debug (BDM) | Single-wire debug interface with non-intrusive memory access; allows flash programming and real-time variable inspection during vehicle calibration without halting CPU execution. |
Applications
| Body Control Module (BCM) | Gateway Controller |
|---|---|
|
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 domain software stack, managing PWM-driven power drivers, reading analog sensors, and routing LIN commands via XGATE. Use Value: 4 MSCAN interfaces enable concurrent communication with engine, chassis, and infotainment networks; MPU isolates critical safety functions (e.g., hazard light override) from non-critical apps. |
Use Scenario: Protocol translation and message filtering between high-speed CAN FD (powertrain) and low-speed LIN (door modules) in zonal architecture. IC Role / Device Role / Timing Role: Real-time bridge MCU performing CAN-to-LIN frame conversion, priority-based arbitration, and diagnostic message forwarding using XGATE-managed buffers. Use Value: Dual ATD channels monitor supply rail health during sleep/wake transitions; API timer provides ±10% accurate 5 s wake-up for periodic network heartbeat without external RTC. |
| Seat Control Unit | Roof Module Controller |
|
Use Scenario: Motorized seat position adjustment with memory recall, heating, and lumbar support in premium vehicles. IC Role / Device Role / Timing Role: Safety-critical actuator controller using PWM outputs for bidirectional DC motors, ATD for thermistor-based temperature feedback, and MSCAN for status reporting. Use Value: ECC Flash ensures firmware integrity after OTA updates; COP watchdog with window mode detects both stuck and runaway code execution during motor stall conditions. |
Use Scenario: Integrated sunroof, ambient lighting, and rain sensor control in overhead console assemblies. IC Role / Device Role / Timing Role: Low-power subsystem MCU managing LIN slave nodes, analog rain detection, RGB LED dimming via PWM, and CAN diagnostics reporting. Use Value: 125°C rating permits placement near heat-generating components; 144-pin LQFP provides dedicated I/O for 16+ switch inputs and 8 PWM outputs without GPIO expansion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MAG | 1 MB Flash, 64 KB RAM, 208-pin MAPBGA, 5 MSCAN modules; higher I/O count (152 pins) and external bus width. | Targeted at flagship body controllers requiring larger code footprint and more CAN domains (e.g., EV platform gateways). | Select when >512 KB Flash or >4 CAN interfaces are required; not pin-compatible due to 208-pin BGA vs. 144-pin LQFP. |
| S912XDP512F0MLH | Same 512 KB Flash and 32 KB RAM but uses older S12XD architecture; lacks MPU, ECC Flash, and IPLL spread-spectrum clocking. | Suitable for cost-sensitive legacy body modules where ASIL-B compliance is not mandated. | Choose only for brownfield designs needing drop-in replacement without software changes; inferior system integrity features limit new automotive programs. |
Compared with S912XEQ512J2CALR, MC9S12XEP100MAG offers greater memory and CAN capacity at the cost of larger footprint and higher BOM, while S912XDP512F0MLH sacrifices MPU/ECC/IPLL for lower unit cost-making S912XEQ512J2CALR the optimal balance of safety, performance, and package constraints for mid-tier automotive ECUs.
Availability
S912XEQ512J2CALR is available at Aetrix Electronics and suitable for automotive body control, gateway, seat, and roof module applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualification.
Supply support for S912XEQ512J2CALR 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in automotive MCUs dating to Motorola's S12 family.
The S12XE product line was designed specifically for next-generation automotive body electronics demanding enhanced functional safety (MPU/ECC), real-time determinism (XGATE), and EMC robustness (IPLL spread spectrum), extending the S12X architecture into ASIL-B–capable systems.
FAQ
What is the maximum bus frequency supported by the S912XEQ512J2CALR?
The S912XEQ512J2CALR supports a maximum CPU bus frequency of 50 MHz and an XGATE bus frequency of 100 MHz. This enables zero-wait-state operation for all on-chip peripherals and memories, ensuring deterministic real-time response in automotive control loops. The IPLL clock generator provides stable, filtered clocking without external components, and its frequency modulation capability reduces electromagnetic emissions during high-speed operation of the S912XEQ512J2CALR.
Does the S912XEQ512J2CALR include hardware memory protection?
Yes, the S912XEQ512J2CALR integrates a Memory Protection Unit (MPU) that defines eight address regions with granularity as fine as 8 bytes. It enforces no-write and no-execute attributes per region and triggers a non-maskable interrupt on access violation. This feature is essential for partitioning safety-critical and non-critical software tasks in ASIL-B–compliant automotive applications, and it is a distinguishing capability of the S12XE family versus earlier S12X derivatives. The MPU configuration is fully accessible during runtime of the S912XEQ512J2CALR.
How many CAN interfaces does the S912XEQ512J2CALR support?
The S912XEQ512J2CALR supports four MSCAN modules (CAN0, CAN1, CAN2, and CAN4), each compliant with CAN 2.0A/B and capable of bit rates up to 1 Mbps. When coordinated with the XGATE co-processor, these modules deliver FULL-CAN functionality-including unlimited mailboxes, hardware filtering, and timestamping-without CPU intervention. This makes the S912XEQ512J2CALR suitable for multi-domain automotive gateways where concurrent communication across powertrain, chassis, and body networks is required.
What analog-to-digital capabilities does the S912XEQ512J2CALR provide?
The S912XEQ512J2CALR includes two independent ATD modules, each supporting 8/10/12-bit resolution, 16-channel multiplexing, and 3 µs 10-bit conversion time. Both modules feature internal oscillators enabling analog acquisition during STOP modes, wake-up on analog comparison thresholds, and left/right-aligned signed/unsigned result formats. These capabilities allow simultaneous monitoring of battery voltage, cabin temperature, and motor current in body control applications using the S912XEQ512J2CALR without external ADCs.
Is the S912XEQ512J2CALR qualified for automotive temperature ranges?
Yes, the S912XEQ512J2CALR is qualified for operation from -40°C to 125°C ambient temperature, meeting AEC-Q100 Grade 0 requirements. This qualification covers full functionality-including Flash programming, XGATE operation, CAN communication, and ATD conversion-across the entire range. The device uses separate VDD/VDDA/VDDPLL supplies and dedicated ground returns to maintain signal integrity and EMC performance under thermal stress, making it suitable for under-hood and transmission-mounted ECUs where the S912XEQ512J2CALR operates reliably in harsh environments.
S912XEQ512J2CALR 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512J2CALR FAQ
1.How can I place an order for S912XEQ512J2CALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512J2CALR 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 S912XEQ512J2CALR reliable?
The price and inventory of S912XEQ512J2CALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512J2CALR is usually 5 days.
3.What payment methods are accepted for S912XEQ512J2CALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512J2CALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512J2CALR?
S912XEQ512J2CALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512J2CALR 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 S912XEQ512J2CALR?
For technical support, including S912XEQ512J2CALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512J2CALR requirements.
6.How does Aetrix verify that S912XEQ512J2CALR is sourced from the original manufacturer or authorized distributors?
All S912XEQ512J2CALR 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 S912XEQ512J2CALR meets industry standards.
7.What is the process for return or replacement of S912XEQ512J2CALR?
All S912XEQ512J2CALR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512J2CALR, 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 S912XEQ512J2CALR part is unused and in its original packaging.
Return procedure for S912XEQ512J2CALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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