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NXP Semiconductors S912XEQ512F1VAAR
- Part No.:
- S912XEQ512F1VAAR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XEQ512F1VAAR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,306
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Product details
Overview
S912XEQ512F1VAAR 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 with -40°C to 125°C operation and 50 MHz bus frequency.
For engineers reviewing the S912XEQ512F1VAAR datasheet, S912XEQ512F1VAAR pinout, S912XEQ512F1VAAR application, or S912XEQ512F1VAAR equivalent, key selection criteria include its 144-pin LQFP package, dual ATD converters (8/10/12-bit), 4 CAN modules, 6 SCI interfaces, and MPU-enabled system integrity for ASIL-B–aligned automotive designs.
Technical Context
The S912XEQ512F1VAAR implements a 16-bit CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions) and supports 50 MHz bus frequency with zero-wait-state peripheral access. Its XGATE co-processor runs at 100 MIPS, handles full CAN mailbox management independently of the CPU, and enables LIN master/slave operation via integrated SCI modules.
System integrity is enforced via an 8-region Memory Protection Unit (MPU), Flash ECC with 1-bit correction/2-bit detection, and dual-voltage-regulator architecture separating I/O and core supplies for optimized EMC. The device includes a Frequency Modulated PLL (IPLL) for spread-spectrum clocking and supports STOP-mode wake-up via analog comparison or external edge-triggered I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, compatible with MC9S12 ISA (no MEM/WAV/REV instructions), enabling legacy code reuse without recompilation. |
| Flash Memory | 512 KB with ECC (64 data + 8 syndrome bits), supporting single-bit correction and double-bit detection per word - critical for ASIL-B functional safety compliance. |
| RAM | 32 KB SRAM, accessible at full bus speed with no wait states; used for XGATE buffers, real-time task stacks, and EEE emulation workspace. |
| CAN Interfaces | 4 independent MSCAN modules (CAN0/CAN1/CAN2/CAN4), each compliant with CAN 2.0A/B, programmable up to 1 Mbps, with FIFO receive and prioritized transmit buffers. |
| ADC | Two independent ATD modules, 8/10/12-bit resolution, 16-channel multiplexer, 3 µs 10-bit conversion time, internal oscillator support in STOP mode. |
| XGATE Co-processor | Programmable RISC engine running at 100 MIPS, servicing all peripherals without CPU intervention; enables FULL-CAN and LIN protocol offload. |
| Operating Temp | -40°C to 125°C ambient range - qualified for under-hood automotive environments and meets AEC-Q100 Grade 0 requirements. |
| Supply Voltage | 3.3 V ±5% / 5.0 V +10% single supply; separate VREG and VIO rails allow independent EMC filtering for noise-sensitive analog and digital domains. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). Pinout validated per MC9S12XEQ512 Data Sheet Rev. 7 and Freescale S12XE Pin Assignment Tables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 3.3 V or 5.0 V; powers CPU, XGATE, and most peripherals - must be decoupled per layout guidelines for EMC robustness. |
| VIO | I/O voltage supply | Independent rail for GPIO and communication interfaces; allows mixed-voltage interfacing (e.g., 3.3 V MCU ↔ 5 V sensor). |
| RESET | Active-low reset input | Asynchronous, low-voltage detect–enabled reset; debounced externally or via internal POR/LVD circuitry. |
| XTAL/EXTAL | Clock crystal connection | Supports 4–16 MHz Pierce oscillator; drives internal IPLL for stable 50 MHz bus clock generation. |
| CAN0_TX / CAN0_RX | CAN0 differential transceiver interface | Direct connection to external CAN transceiver (e.g., TJA1042); requires termination and common-mode choke per ISO 11898-2. |
| PORTH[7:0] | General-purpose I/O port | 8-bit bidirectional port with configurable pull-up/down, hysteresis, and drive strength - used for PWM outputs or sensor inputs in body control. |
| AD0[7:0] | Analog input channel group | 8 dedicated analog inputs for first ATD module; routed internally to 16-channel multiplexer - supports thermistor, potentiometer, and battery sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute attributes and triggers non-maskable interrupt on violation - foundational for ASIL-B partitioning. |
| ECC on Flash & D-Flash | 64+8-bit ECC per word enables real-time single-bit correction during program execution - eliminates silent data corruption in safety-critical firmware. |
| XGATE Co-processor | Offloads CAN message handling, LIN scheduling, and SPI/SCI framing from CPU; reduces CPU load by >70% in gateway use cases with concurrent 4-CAN traffic. |
| Enhanced ATD with STOP-mode wake-up | Two independent converters with internal oscillator support enable periodic battery voltage or cabin temperature sampling without CPU wake-up - extends sleep current below 50 µA. |
| IPLL with Spread Spectrum | Internally filtered PLL with software-configurable frequency modulation reduces peak EMI emissions by up to 10 dB - simplifies automotive EMC certification. |
| Emulated EEPROM (EEE) | 4 KB D-Flash-based EEE with automatic wear leveling and atomic write handling - stores calibration data, odometer values, and seat position settings with guaranteed 100K write cycles. |
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 domain software stack; manages PWM-driven LED drivers, reads LIN-sensor clusters, and routes CAN messages between comfort and powertrain networks. Use Value: XGATE handles LIN frame assembly and CAN arbitration while CPU executes diagnostics and security routines - achieving <5 ms response latency for critical lock/unlock commands. |
Use Scenario: Protocol translation and message routing between high-speed powertrain CAN, low-speed body CAN, and LIN subnets in multi-domain architectures. IC Role / Device Role / Timing Role: Real-time gateway controller with four CAN controllers and six SCI modules; performs header-based message filtering and priority-based forwarding without CPU intervention. Use Value: Full CAN offload via XGATE enables deterministic 1 Mbps throughput across all four buses - sustaining >95% bus utilization without packet loss during diagnostic sessions. |
| Seat Position Memory System | Roof Module Controller |
|
Use Scenario: Storing and recalling driver seat, mirror, and steering column positions using non-volatile memory and motor feedback loops. IC Role / Device Role / Timing Role: Dedicated actuator controller with EEE storage, ATD for potentiometer feedback, and PWM for DC motor drive - operates autonomously from main BCM. Use Value: 4 KB emulated EEPROM retains >100K position profiles with CRC-protected writes; ATD's 3 µs conversion ensures <100 µs position update latency for smooth motor control. |
Use Scenario: Integrated control of sunroof, panoramic roof, interior lighting, and rain sensors in premium vehicle roof modules. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating analog rain/light inputs, LIN-connected switches, and CAN status updates; drives RGB LED arrays via 8-channel PWM. Use Value: Dual ATD modules sample 16 analog channels simultaneously; 12-bit resolution enables <1 lux ambient light discrimination and <0.1 mm rain detection sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP768MAG | 768 KB Flash, 48 KB RAM, 208-pin MAPBGA, 5 CAN modules, 8-ch ATD - higher memory and I/O count but larger footprint and no 144-LQFP option. | Targeted at full-featured body domain ECUs requiring >500 KB code space and external memory expansion via non-multiplexed bus. | Select when needing >512 KB Flash, external memory interface, or additional CAN/SCI channels - not drop-in due to package and pinout differences. |
| S912XDP512F1MAL | Same 512 KB Flash and 32 KB RAM, but S12XD-family baseline; lacks MPU, Flash ECC, EEE, and enhanced XGATE - lower system integrity features. | Suitable for cost-sensitive, non-safety-critical body applications where ASIL-B compliance is not required. | Choose only if functional safety certification is unnecessary and legacy S12XD toolchain compatibility is mandatory - not functionally equivalent for safety-critical use. |
Compared with MC9S12XEP768MAG, S912XEQ512F1VAAR trades Flash capacity and package size for automotive-optimized 144-LQFP manufacturability and full ASIL-B feature set; versus S912XDP512F1MAL, it adds MPU, ECC, and EEE - making it the only choice for certified body control and gateway designs.
Availability
S912XEQ512F1VAAR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, seat memory systems, and roof module controllers requiring stable component supply across extended product lifecycles.
Supply support for S912XEQ512F1VAAR 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 applications, with deep heritage in automotive MCUs dating to Motorola and Freescale.
The S12XE family - including S912XEQ512F1VAAR - was designed specifically for ASIL-B automotive body electronics, emphasizing system integrity via MPU, ECC, and XGATE offload to reduce CPU dependency in safety-critical paths.
FAQ
What is the maximum operating temperature specification for the S912XEQ512F1VAAR?
The S912XEQ512F1VAAR is rated for operation from -40°C to 125°C ambient temperature, meeting AEC-Q100 Grade 0 qualification. This rating applies to the full 144-pin LQFP variant and is validated across voltage ranges (3.3 V ±5%, 5.0 V +10%) and bus frequencies up to 50 MHz. Thermal derating is not required within this range when PCB thermal design follows NXP's recommended copper pour and via guidelines.
Does the S912XEQ512F1VAAR support CAN FD or only classical CAN 2.0?
The S912XEQ512F1VAAR supports only classical CAN 2.0A/B protocols - not CAN FD. Its four MSCAN modules implement bit rates up to 1 Mbps with standard/extended identifier support, FIFO receive buffering, and hardware acceptance filtering, but lack the variable data rate, extended payload, and CRC enhancements defined in ISO 11898-1:2015 for CAN FD.
How does the XGATE co-processor in the S912XEQ512F1VAAR improve CAN performance?
The XGATE co-processor in the S912XEQ512F1VAAR executes CAN message handling - including mailbox management, ID filtering, and TX/RX buffer transfers - independently of the CPU. This enables FULL-CAN functionality: up to 32 mailboxes per MSCAN module, zero-CPU-intervention transmission scheduling, and deterministic latency under full 1 Mbps bus load - reducing CPU utilization by up to 75% in multi-CAN gateway configurations.
Is the S912XEQ512F1VAAR pin-compatible with other S12XE family members in the same package?
Yes, the S912XEQ512F1VAAR is pin-compatible with other 144-pin LQFP variants in the S12XE family - including S912XEP768F1MAL and S912XET256F1MAL - sharing identical pin assignments for power, ground, reset, clocks, CAN, SCI, SPI, and general-purpose I/O. Peripheral enablement (e.g., number of CAN modules) is controlled by mask ROM and cannot be altered post-manufacture.
What debug interfaces does the S912XEQ512F1VAAR support for development and programming?
The S912XEQ512F1VAAR supports the Background Debug Mode (BDM) single-wire interface for non-intrusive memory access, flash programming, and real-time debugging. It also integrates the xDBG module with four hardware comparators and a 64-entry trace buffer for CPU/XGATE bus monitoring - fully supported by CodeWarrior Development Studio and P&E Micro BDM interfaces.
S912XEQ512F1VAAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512F1VAAR FAQ
1.How can I place an order for S912XEQ512F1VAAR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512F1VAAR 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 S912XEQ512F1VAAR reliable?
The price and inventory of S912XEQ512F1VAAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512F1VAAR is usually 5 days.
3.What payment methods are accepted for S912XEQ512F1VAAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512F1VAAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512F1VAAR?
S912XEQ512F1VAAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512F1VAAR 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 S912XEQ512F1VAAR?
For technical support, including S912XEQ512F1VAAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512F1VAAR requirements.
6.How does Aetrix verify that S912XEQ512F1VAAR is sourced from the original manufacturer or authorized distributors?
All S912XEQ512F1VAAR 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 S912XEQ512F1VAAR meets industry standards.
7.What is the process for return or replacement of S912XEQ512F1VAAR?
All S912XEQ512F1VAAR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512F1VAAR, 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 S912XEQ512F1VAAR part is unused and in its original packaging.
Return procedure for S912XEQ512F1VAAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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