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NXP Semiconductors S912XEQ384BVAA
- Part No.:
- S912XEQ384BVAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XEQ384BVAA.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
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Product details
Overview
S912XEQ384BVAA from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 384 KB on-chip Flash memory with ECC, 24 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 S912XEQ384BVAA datasheet, S912XEQ384BVAA pinout, S912XEQ384BVAA application, or S912XEQ384BVAA equivalent, this page provides verified technical context, package mapping, real-world use cases, and validated alternative options for automotive ECU design and replacement planning.
Technical Context
The S912XEQ384BVAA implements a 16-bit CPU12X 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 MIPS with dedicated interrupt handling for CAN, LIN, and SPI offload. Its Memory Protection Unit (MPU) defines eight address regions with 8-byte granularity and enforces no-write/no-execute attributes.
It features dual ATD converters (8/10/12-bit resolution, 16-channel multiplexer, 3 µs 10-bit conversion time), five MSCAN modules (CAN 2.0A/B compliant, up to 1 Mbps, FULL-CAN with XGATE), and a Frequency Modulated PLL (IPLL) with spread-spectrum capability for EMC reduction - all operating across -40°C to 125°C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, fully compatible with MC9S12 except five removed fuzzy instructions (MEM, WAV, WAVR, REV, REVW). |
| Flash Memory | 384 KB Flash with ECC: 1-bit fault correction and 2-bit fault detection per 64-bit word; 1024-byte erase sectors. |
| RAM | 24 KB on-chip RAM; supports fast data access without wait states for peripherals and memory. |
| Operating Voltage | 3.3 V ±5% / +10% to 5.0 V +10%; separate VREG and I/O supplies enable optimized EMC filtering. |
| Temperature Range | -40°C to 125°C ambient; qualified for under-hood automotive applications requiring extended thermal robustness. |
| Bus Frequency | 50 MHz maximum CPU bus frequency; XGATE operates at 100 MHz for high-speed peripheral servicing. |
| Peripheral Count | 4 CAN modules (CAN0/CAN1/CAN2/CAN4), 6 SCI, 3 SPI, 2 IIC, 8-channel PWM, 8-channel ECT, 8-channel TIM. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). Non-multiplexed external bus interface available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Dedicated supplies for core logic, analog (ATD), and PLL-enabling independent filtering and noise isolation. |
| VSS, VSSA, VSSPLL | Ground returns | Separate ground paths minimize coupling between digital, analog, and clock domains. |
| RESET | Active-low reset input | Asynchronous, low-voltage detect–enabled reset with POR and COP watchdog integration. |
| XTAL, EXTAL | Crystal oscillator terminals | Supports 4–16 MHz Pierce crystal; internal transconductance sized for reliable startup across temperature. |
| MSCAN0_TX, MSCAN0_RX | CAN0 differential signal pair | Direct connection to external CAN transceiver; supports 1 Mbps bit rate and loopback self-test mode. |
| SCI0_TX, SCI0_RX | SCI0 serial interface | Full-duplex NRZ UART; supports LIN physical layer via programmable polarity and break detection. |
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. |
| XGATE Co-processor | Programmable in C; handles CAN/LIN/SCI/SPI interrupts autonomously, freeing CPU for higher-layer tasks and enabling FULL-CAN throughput. |
| ECC-Protected Flash | 64-bit data + 8-bit syndrome bits per word; corrects single-bit errors and detects double-bit faults during read/write/erase cycles. |
| IPLL with Spread Spectrum | Internally filtered PLL with software-configurable frequency modulation-reduces peak EMI emissions without external components. |
| Enhanced ATD Converter | Two independent 8/10/12-bit converters; 16-channel mux, 3 µs 10-bit conversion, internal oscillator for Stop-mode operation. |
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; manages PWM-driven power outputs, reads analog sensor inputs (e.g., temperature, position), and routes CAN/LIN messages. Use Value: MPU and ECC ensure functional safety compliance; XGATE offloads CAN message handling to sustain >95% bus utilization without CPU intervention. |
Use Scenario: Protocol translation and message routing between high-speed CAN FD backbone and low-speed LIN subnets in multi-domain vehicle architectures. IC Role / Device Role / Timing Role: Real-time gateway controller with concurrent CAN0/CAN1/CAN2/CAN4 interfaces and SCI-based LIN master nodes. Use Value: Four independent CAN modules and XGATE-managed mailbox arbitration enable deterministic latency <100 µs for critical diagnostic frames. |
| Engine Bay Sensor Hub | Chassis Domain Controller |
|
Use Scenario: Aggregation and preprocessing of engine coolant temperature, intake air pressure, and throttle position signals near high-EMI zones. IC Role / Device Role / Timing Role: Ruggedized sensor interface node; performs analog-to-digital conversion, CRC-checked data packaging, and CAN transmission. Use Value: -40°C to 125°C rating and separate VDDA/VSSA pins maintain ATD accuracy under thermal stress; ECC prevents corrupted calibration data storage. |
Use Scenario: Coordination of ABS, ESC, and airbag subsystems via synchronized CAN messaging and hardware-triggered safety shutdowns. IC Role / Device Role / Timing Role: Safety-critical domain controller using COP watchdog, MPU-protected memory partitions, and emergency PWM shutdown inputs. Use Value: Windowed COP and supervisor/user mode separation meet ASIL-B requirements; fast STOP-mode wake-up (<10 µs) enables responsive fault response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XEQ512BVAA | 512 KB Flash, 32 KB RAM, same 144-LQFP package and peripheral set; identical pinout and voltage/temperature specs. | Higher Flash/RAM capacity supports larger AUTOSAR stacks or OTA update partitions. | Select when firmware size exceeds 384 KB or when future scalability for feature expansion is required. |
| S912XEP384BVAA | Same Flash/RAM, but adds Memory Protection Unit (MPU) support and enhanced EEPROM emulation (EEE); otherwise identical package and peripherals. | Targeted at applications requiring certified memory partitioning (e.g., ISO 26262 ASIL-B). | Choose when MPU-enforced isolation between safety and non-safety software partitions is mandatory. |
Compared with S912XEQ384BVAA, the S912XEQ512BVAA offers headroom for complex diagnostics and logging, while the S912XEP384BVAA adds MPU-level security enforcement-neither is pin-compatible, but both share identical footprint and thermal profile for drop-in board reuse where layout allows.
Availability
S912XEQ384BVAA is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, and chassis domain controllers requiring stable component supply, long lifecycle assurance, and AEC-Q100 qualification.
Supply support for S912XEQ384BVAA 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 applications, with roots in Freescale's automotive MCU heritage.
The S912XEQ384BVAA belongs to the S12XE family-designed specifically for automotive body electronics and gateway systems demanding enhanced system integrity, ECC-protected memory, and real-time co-processing via XGATE.
FAQ
What is the maximum bus frequency supported by the S912XEQ384BVAA?
The S912XEQ384BVAA supports a maximum CPU bus frequency of 50 MHz and an XGATE bus frequency of 100 MHz. This enables deterministic real-time response for CAN message handling and analog acquisition. The IPLL clock generator provides stable, spread-spectrum–enabled timing without external filtering components. All timing specifications are validated across the full -40°C to 125°C operating range for the S912XEQ384BVAA.
Does the S912XEQ384BVAA include Error Correction Code (ECC) for Flash memory?
Yes, the S912XEQ384BVAA includes ECC protection on its 384 KB Flash memory: each 64-bit data word is accompanied by 8 syndrome bits, enabling single-bit error correction and double-bit error detection during read, program, and erase operations. This ECC implementation is hardware-accelerated and transparent to software execution. The S912XEQ384BVAA also applies ECC to D-Flash and emulated EEPROM operations.
How many CAN modules does the S912XEQ384BVAA integrate, and what protocols do they support?
The S912XEQ384BVAA integrates four MSCAN modules (CAN0, CAN1, CAN2, and CAN4), each compliant with CAN 2.0A and 2.0B protocols-including standard and extended identifier frames and data lengths from 0 to 8 bytes. Bit rates are programmable up to 1 Mbps. When paired with the XGATE co-processor, the S912XEQ384BVAA achieves FULL-CAN performance with unlimited mailbox depth and hardware-accelerated filtering.
What is the role of the XGATE module in the S912XEQ384BVAA architecture?
The XGATE module in the S912XEQ384BVAA is a programmable 100-MIPS RISC co-processor that offloads time-critical peripheral tasks-including CAN message scheduling, LIN frame generation, SPI data transfers, and ATD result processing-from the main CPU12X core. It operates independently, supports two interrupt levels, and can trigger CPU interrupts upon task completion. This architecture ensures deterministic latency for the S912XEQ384BVAA in high-throughput automotive networks.
Is the S912XEQ384BVAA qualified for automotive under-hood applications?
Yes, the S912XEQ384BVAA is qualified for automotive under-hood applications with an ambient operating temperature range of -40°C to 125°C and AEC-Q100 Grade 1 certification. Its separate VDDA/VSSA analog supply, hysteresis-enabled I/O pins, and EMC-optimized IPLL with spread-spectrum modulation ensure robust operation in high-noise, thermally aggressive environments typical of engine compartments. This qualification applies specifically to the S912XEQ384BVAA device variant.
S912XEQ384BVAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tray
- 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:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 24K 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:
S912XEQ384BVAA FAQ
1.How can I place an order for S912XEQ384BVAA through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384BVAA 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 S912XEQ384BVAA reliable?
The price and inventory of S912XEQ384BVAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384BVAA is usually 5 days.
3.What payment methods are accepted for S912XEQ384BVAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384BVAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384BVAA?
S912XEQ384BVAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384BVAA 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 S912XEQ384BVAA?
For technical support, including S912XEQ384BVAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384BVAA requirements.
6.How does Aetrix verify that S912XEQ384BVAA is sourced from the original manufacturer or authorized distributors?
All S912XEQ384BVAA 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 S912XEQ384BVAA meets industry standards.
7.What is the process for return or replacement of S912XEQ384BVAA?
All S912XEQ384BVAA units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384BVAA, 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 S912XEQ384BVAA part is unused and in its original packaging.
Return procedure for S912XEQ384BVAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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