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NXP Semiconductors S912XEQ512BCAAR
- Part No.:
- S912XEQ512BCAAR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XEQ512BCAAR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,401
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Product details
Overview
S912XEQ512BCAAR 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 PWM/ATD modules. It targets body control modules and gateway applications requiring CAN/LIN communication, real-time I/O control, and system integrity features including MPU and ECC.
For engineers reviewing the S912XEQ512BCAAR datasheet, S912XEQ512BCAAR pinout, S912XEQ512BCAAR application, or S912XEQ512BCAAR equivalent, key selection considerations include its 144-pin LQFP package, -40°C to 125°C operating range, 50 MHz bus frequency, dual ATD converters, and XGATE-accelerated CAN/LIN handling - all validated for automotive multiplexing systems.
Technical Context
The S912XEQ512BCAAR implements the CPU12X 16-bit core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), supports up to 50 MHz bus frequency, and integrates an XGATE co-processor running at 100 MHz to offload MSCAN, LIN, SPI, and timer interrupts without CPU intervention. Its memory subsystem includes ECC-protected Flash with 1-bit correction/2-bit detection and emulated EEPROM (EEE) backed by D-Flash.
It features four CAN modules (CAN0/CAN1/CAN2/CAN4), three SPI interfaces, two IIC modules, eight SCI modules, and dual 8/10/12-bit ATD converters with 16-channel multiplexing and 3 µs 10-bit conversion time. The device operates across 3.3 V ±5% to 5.0 V +10% supply and supports STOP/WAIT wake-up via 25 configurable I/O pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, compatible with MC9S12 ISA (excludes MEM/WAV/REVs), enabling legacy code reuse with enhanced addressing. |
| Flash Memory | 512 KB with ECC: 64 data bits + 8 syndrome bits per word enable single-bit correction and double-bit detection for ASIL-B compliance. |
| RAM | 32 KB SRAM - sufficient for real-time task stacks, XGATE buffers, and CAN mailbox descriptors in multi-bus gateway designs. |
| Operating Voltage | 3.3 V ±5% to 5.0 V +10% - supports direct connection to automotive battery rails with minimal external regulation. |
| Temperature Range | -40°C to 125°C - qualified for under-hood and body-control module placement without derating. |
| Bus Frequency | 50 MHz - delivers deterministic real-time response for 1 ms CAN frame scheduling and PWM update cycles. |
| XGATE Performance | 100 MHz RISC co-processor - handles full CAN protocol stack (including mailbox management) and LIN master/slave tasks independently of CPU. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03), RoHS-compliant, with non-multiplexed external bus interface support.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Power supply inputs | Separate analog/digital regulator inputs allow independent EMC filtering and noise isolation for ATD and CAN transceivers. |
| RESET | Active-low reset input | Asynchronous reset with internal POR/LVD circuitry ensures reliable boot after cold crank or brown-out conditions. |
| OSC1/OSC2 | Crystal oscillator terminals | Supports 4–16 MHz Pierce crystal for primary clock source; enables stable IPLL lock with low jitter for CAN bit timing. |
| CAN0_TX / CAN0_RX | CAN0 differential signal pair | Dedicated physical layer interface for high-speed (up to 1 Mbps) CAN 2.0B communication on Body Bus 1. |
| SCI0_TX / SCI0_RX | LIN bus UART interface | Configurable as LIN 2.0 master/slave; supports break detection and auto-synchronization for door module connectivity. |
| PORTA[7:0] | General-purpose I/O port | 8-bit parallel port with configurable pull-ups/downs and hysteresis - used for discrete switch sensing or LED driver control. |
| PWM0–PWM7 | Pulse-width modulator outputs | Eight 8-bit or four 16-bit PWM channels with center/left-aligned modes - drive HVAC actuators or lighting dimmers with <1% duty cycle resolution. |
| ATD0[7:0], ATD1[7:0] | Analog input channels | 16-channel 10-bit ATD with 3 µs conversion time - samples cabin temperature, voltage monitoring, and potentiometer feedback simultaneously. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 programmable address regions with 8-byte granularity; enforces no-write/no-execute attributes and triggers NMI on violation - critical for ASIL-B software partitioning. |
| Enhanced XGATE Co-processor | 100 MIPS RISC engine servicing MSCAN, LIN, SPI, and ECT interrupts autonomously - frees CPU for application logic and reduces worst-case interrupt latency to <1 µs. |
| ECC-Protected Flash | Single-bit error correction and double-bit error detection per 72-bit word - meets ISO 26262 fault containment requirements for safety-critical firmware storage. |
| Full-CAN with XGATE | Hardware-accelerated CAN protocol handling supporting unlimited mailboxes and FIFO-based receive buffering - sustains 100% bus load at 500 kbps without CPU overhead. |
| Emulated EEPROM (EEE) | 4 KB EEE backed by 32 KB D-Flash with automated wear leveling and atomic write/erase - stores calibration data and user preferences with >100k endurance cycles. |
Applications
| Body Control Module (BCM) | Vehicle Gateway |
|---|---|
Use Scenario: Centralized control of lighting, wipers, door locks, and HVAC in modern passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing body domain logic, managing LIN-connected slave nodes (e.g., mirror controls), and routing CAN messages between chassis and infotainment networks. Use Value: XGATE offloads LIN scheduling and CAN message filtering, enabling deterministic 10 ms task cycles while maintaining 125°C ambient operation. |
Use Scenario: Protocol translation and message routing between high-speed powertrain CAN, low-speed body CAN, and LIN subnets. IC Role / Device Role / Timing Role: Dual-CAN gateway MCU with dedicated CAN0/CAN1 interfaces and XGATE-managed mailbox arbitration - acts as bridge and firewall between domains. Use Value: Full-CAN capability with hardware timestamping ensures precise inter-domain synchronization and diagnostic message forwarding with <50 µs latency. |
| Smart Junction Box | Seat Control Unit |
Use Scenario: Power distribution and load switching for centralized electrical architecture with fused outputs and current monitoring. IC Role / Device Role / Timing Role: High-current I/O controller using PWM-driven MOSFET gates and ATD-based shunt sensing - monitors 12 V rail and individual load currents. Use Value: 152 GPIOs with configurable drive strength and hysteresis support direct driving of 2 A solenoids; ECC Flash ensures firmware integrity during load dump events. |
Use Scenario: Real-time adjustment of seat position, heating, and memory functions via LIN-connected switches and sensors. IC Role / Device Role / Timing Role: LIN master coordinating seat motor drivers (via PWM), temperature sensing (ATD), and EEPROM-stored user profiles. Use Value: Integrated EEE preserves seat position calibrations across ignition cycles; 10-bit ATD resolves 0.1°C thermal changes for climate-responsive heating control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MAL | 1 MB Flash, 64 KB RAM, 208-pin MAPBGA; adds fifth CAN, extra SCI/SPI, and larger I/O count (152 vs. 119). | Targeted at premium gateways requiring higher message throughput and external memory expansion via non-multiplexed bus. | Select when >512 KB Flash, >32 KB RAM, or external SDRAM interface is required - not drop-in due to package and pinout change. |
| S912XDP512J1MAG | Same 512 KB Flash/RAM, but 112-pin LQFP; reduced peripheral count (3 CAN, 1 IIC, 1 SPI, 1 ATD) and lower I/O (91 pins). | Suitable for cost-sensitive body nodes with limited communication requirements (e.g., rear lamp control). | Choose for space-constrained PCBs where 144-pin footprint is unavailable; verify ATD/PWM channel count matches design needs. |
Compared with S912XEQ512BCAAR, MC9S12XEP100MAL offers greater memory and peripheral scalability for complex gateways but requires board redesign, while S912XDP512J1MAG reduces cost and size at the expense of CAN count and analog capability - making it suitable only for simpler body nodes.
Availability
S912XEQ512BCAAR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, smart junction boxes, and seat control units requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualification.
Supply support for S912XEQ512BCAAR 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 expertise in automotive MCUs and functional safety.
The S12XE family - including S912XEQ512BCAAR - was designed specifically for automotive body electronics and gateway applications demanding ASIL-B compliance, robust CAN/LIN networking, and high-integrity flash execution in harsh environments.
FAQ
What is the maximum operating temperature specification for the S912XEQ512BCAAR?
The S912XEQ512BCAAR is rated for operation from -40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 0 requirements. This rating is validated across all core functions including CPU12X execution, MSCAN communication, and ATD conversion - ensuring reliability in under-hood and trunk-mounted body control modules where thermal stress is highest.
Does the S912XEQ512BCAAR support CAN FD or only classical CAN 2.0?
The S912XEQ512BCAAR supports only classical CAN 2.0A/B protocols - it implements the MSCAN module with bit rates up to 1 Mbps, standard/extended identifiers, and 0–8 byte payloads. CAN FD is not supported, as the silicon lacks the required protocol enhancements, arbitration phase handling, and flexible data-rate clocking architecture found in later S32K or MagnaChip families.
How many CAN controllers does the S912XEQ512BCAAR integrate?
The S912XEQ512BCAAR integrates four CAN controllers: CAN0, CAN1, CAN2, and CAN4 - as confirmed in Table 1 of the MC9S12XE Family Product Brief. This configuration enables simultaneous connectivity to multiple vehicle networks (e.g., body CAN, chassis CAN, diagnostic CAN) without external transceivers beyond physical layer drivers.
Is the XGATE co-processor in the S912XEQ512BCAAR programmable in C language?
Yes, the XGATE co-processor in the S912XEQ512BCAAR is fully programmable in ANSI C using CodeWarrior or Cosmic toolchains. Its RISC architecture, 100 MHz clock, and dedicated instruction set for data movement and bit manipulation enable efficient offloading of time-critical tasks like CAN mailbox management, LIN frame generation, and SPI DMA transfers - all without CPU intervention.
What type of Flash memory technology is used in the S912XEQ512BCAAR, and does it include ECC?
The S912XEQ512BCAAR uses embedded Flash memory with built-in Error Correction Code (ECC) implemented as 64 data bits plus 8 syndrome bits per word. This provides single-bit error correction and double-bit error detection - a mandatory feature for ISO 26262 ASIL-B compliance and essential for maintaining firmware integrity in automotive environments subject to radiation-induced soft errors.
S912XEQ512BCAAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- 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:
- 59
- 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 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512BCAAR FAQ
1.How can I place an order for S912XEQ512BCAAR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512BCAAR 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 S912XEQ512BCAAR reliable?
The price and inventory of S912XEQ512BCAAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512BCAAR is usually 5 days.
3.What payment methods are accepted for S912XEQ512BCAAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512BCAAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512BCAAR?
S912XEQ512BCAAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512BCAAR 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 S912XEQ512BCAAR?
For technical support, including S912XEQ512BCAAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512BCAAR requirements.
6.How does Aetrix verify that S912XEQ512BCAAR is sourced from the original manufacturer or authorized distributors?
All S912XEQ512BCAAR 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 S912XEQ512BCAAR meets industry standards.
7.What is the process for return or replacement of S912XEQ512BCAAR?
All S912XEQ512BCAAR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512BCAAR, 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 S912XEQ512BCAAR part is unused and in its original packaging.
Return procedure for S912XEQ512BCAAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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