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NXP Semiconductors S912XEQ384BMALR
- Part No.:
- S912XEQ384BMALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ384BMALR.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,770
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Product details
Overview
S912XEQ384BMALR 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 converter. It targets body control modules requiring CAN/LIN communication, PWM-driven actuator control, and sensor signal acquisition under -40°C to 125°C ambient conditions.
For engineers reviewing the S912XEQ384BMALR datasheet, S912XEQ384BMALR pinout, S912XEQ384BMALR application, or S912XEQ384BMALR equivalent, key selection considerations include its 144-pin LQFP package, dual ATD converters (8/10/12-bit, 16-channel), 6 MSCAN modules, XGATE coprocessor running at 100 MHz, and Memory Protection Unit (MPU) for ASIL-B–capable system integrity.
Technical Context
The S912XEQ384BMALR implements a 16-bit CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), 50 MHz bus frequency, and supervisor/user mode execution control. Its MPU defines eight address regions with 8-byte granularity and enforces no-write/no-execute protection with non-maskable violation interrupts.
XGATE operates as a programmable RISC coprocessor at 100 MIPS, servicing all peripherals-including six MSCAN modules-without CPU intervention. It enables FULL-CAN capability via mailbox management and offloads LIN protocol handling from the main CPU, while the IPLL clock generator supports spread-spectrum modulation for EMC reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 instruction set; excludes MEM/WAV/REV instructions for deterministic timing. |
| Flash Memory | 384 KB with ECC: corrects 1-bit faults and detects 2-bit faults per 64-bit word; supports automated erase (1024-byte sectors) and secure programming. |
| RAM | 24 KB SRAM; used for XGATE code/data, stack, and real-time buffers without wait states. |
| ADC | Dual ATD modules: 8/10/12-bit resolution, 16-channel multiplexer, 3 µs 10-bit conversion time, internal oscillator support in STOP mode. |
| CAN Interfaces | 6 MSCAN modules compliant with CAN 2.0A/B; each supports 1 Mbps bit rate, 0–8 byte payloads, and hardware FIFO with 5 receive buffers. |
| XGATE Performance | 100 MIPS RISC coprocessor running at 100 MHz; handles CAN/LIN messaging, PWM updates, and data movement independently of CPU. |
| Operating Temp | -40°C to +125°C ambient; qualified for automotive powertrain and body control applications per AEC-Q100 Grade 0. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case number 918-03). Pinout validated per MC9S12XEQ384B Data Sheet Rev. 5 (2014), Table 3-1 "Pin Assignments".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs | Separate 5V supplies for digital core, analog ADC, and XGATE domain-enables independent EMC filtering and noise isolation. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; triggers POR, COP timeout, or MPU violation recovery sequence. |
| XTAL, EXTAL | Crystal oscillator interface | Supports 4–16 MHz Pierce crystal; feeds OSC_LCP module for stable clock generation with noise immunity. |
| PORTA[7:0] | General-purpose I/O port | 8-bit bidirectional port with configurable pull-up/down, hysteresis, and drive strength; usable as SPI0 MOSI/MISO/SCK or SCI0 TX/RX. |
| PORTH[7:0] | Interrupt-capable I/O port | 8 pins support edge-sensitive wake-up from STOP/WAIT modes; used for door switch sensing or LIN transceiver enable control. |
| CAN0_TX, CAN0_RX | CAN physical layer interface | Differential pair for CAN0 bus; requires external transceiver (e.g., TJA1042); supports loopback and listen-only diagnostic modes. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Enables ASIL-B–compliant partitioning: 8 configurable regions with 8-byte granularity, enforcing no-write/no-execute policies and triggering NMI on violation. |
| ECC on Flash | Guarantees data integrity over automotive lifetime: single-bit correction and double-bit detection per 64-bit word, eliminating silent corruption in safety-critical firmware. |
| XGATE Coprocessor | Offloads time-critical CAN/LIN message handling and PWM updates, freeing CPU for application logic and reducing worst-case interrupt latency by >70%. |
| Enhanced ATD Converter | Two independent 12-bit ADCs with 16-channel mux and 3 µs conversion time-supports simultaneous sampling of battery voltage, cabin temperature, and motor current. |
| IPLL Clock Generator | Integrated PLL with spread-spectrum modulation reduces EMI peaks by up to 10 dB; eliminates need for external filter components in CAN/LIN gateways. |
Applications
| Body Control Module (BCM) | Gateway Controller |
|---|---|
|
Use Scenario: Centralized vehicle body electronics managing lighting, window lifts, door locks, and HVAC actuators across multiple LIN subnets and CAN domains. IC Role / Device Role / Timing Role: Primary MCU executing body control application software, coordinating LIN slave nodes via XGATE-managed SCI modules, and routing CAN messages between chassis and infotainment networks. Use Value: MPU-enforced memory isolation prevents firmware corruption from LIN bus glitches; dual ATD converters enable concurrent monitoring of battery voltage and interior temperature without CPU polling. |
Use Scenario: In-vehicle network bridge connecting high-speed CAN FD backbone (powertrain) with low-speed LIN clusters (seats, mirrors, sensors). IC Role / Device Role / Timing Role: Real-time protocol translator using six MSCAN modules and XGATE to buffer, filter, and forward messages between heterogeneous buses with <50 µs latency. Use Value: XGATE handles full CAN mailbox management and LIN frame assembly, enabling CPU to execute gateway routing tables and diagnostics-reducing total message latency by 40% vs. CPU-only implementation. |
| Roof Module Controller | Seat Control Unit |
|
Use Scenario: Sunroof, panoramic roof, and power shade control with position feedback, obstacle detection, and anti-pinch logic. IC Role / Device Role / Timing Role: Safety-aware actuator controller using PWM outputs for motor drive, ATD inputs for potentiometer feedback, and MSCAN for status reporting to BCM. Use Value: ECC-protected Flash ensures reliable boot and calibration storage; API timer provides ±10% accurate 2-second timeout for anti-pinch reversal-no external RC component required. |
Use Scenario: Driver/passenger seat adjustment with memory positions, heating elements, and occupancy detection via pressure sensors. IC Role / Device Role / Timing Role: Sensor fusion hub acquiring analog signals (seat position, temp, weight), driving PWM-heated elements, and communicating over LIN to BCM. Use Value: Dual ATD modules sample 16 sensor channels simultaneously; 24 KB RAM buffers thermal profiles and position history for adaptive learning without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XEP512JMFA | 512 KB Flash, 32 KB RAM, 208-pin MAPBGA; adds non-multiplexed external bus and 8-channel ATD. | Targeted at higher-complexity gateways requiring external Flash or Ethernet PHY interfacing. | Select when >384 KB code space or external memory expansion is needed; not pin-compatible due to package and pin count difference. |
| MC9S12XDP512CPV | 512 KB Flash, 32 KB RAM, 112-pin LQFP; lacks MPU, ECC, and XGATE; uses legacy S12X CPU. | Suitable for cost-sensitive body modules where ASIL-B compliance and CAN throughput are not required. | Choose only for legacy redesigns with existing S12X toolchains; lacks MPU/ECC/XGATE-cannot replace S912XEQ384BMALR in safety-critical roles. |
Compared with S912XEQ384BMALR, the S912XEP512JMFA offers greater memory and peripheral headroom but requires PCB redesign due to 208-pin MAPBGA packaging, while the MC9S12XDP512CPV omits MPU, ECC, and XGATE-making it unsuitable for new designs requiring functional safety or high-throughput CAN/LIN.
Availability
S912XEQ384BMALR is available at Aetrix Electronics and suitable for automotive body control modules, gateway controllers, roof modules, and seat control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S912XEQ384BMALR 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's automotive MCU leadership.
The S12XE family-including S912XEQ384BMALR-was designed specifically for ASIL-B–capable automotive body electronics, emphasizing system integrity via MPU, ECC, and XGATE offload to reduce CPU load in real-time CAN/LIN networks.
FAQ
What is the maximum operating frequency of the S912XEQ384BMALR CPU bus?
The S912XEQ384BMALR CPU bus operates at a maximum frequency of 50 MHz. This is achieved via the internal IPLL clock generator, which multiplies the external crystal input (4–16 MHz) without requiring external components. The 50 MHz bus speed enables deterministic execution of body control algorithms while maintaining compatibility with legacy S12X software.
Does the S912XEQ384BMALR support CAN FD or only classical CAN?
The S912XEQ384BMALR supports only classical CAN 2.0A/B (up to 1 Mbps) via its six MSCAN modules. It does not implement CAN FD features such as flexible data-rate, extended data length, or CRC enhancements. For CAN FD applications, designers must select newer NXP S32K or S32G families instead of the S12XE platform.
How does the XGATE coprocessor in the S912XEQ384BMALR improve CAN performance?
The XGATE coprocessor in the S912XEQ384BMALR executes CAN message handling-including mailbox management, ID filtering, and payload transfer-at 100 MIPS, independent of the main CPU. This enables FULL-CAN operation with up to six concurrent MSCAN modules, reduces CPU interrupt load by >80%, and guarantees sub-50 µs message latency-critical for real-time gateway applications.
What is the purpose of the Memory Protection Unit (MPU) in the S912XEQ384BMALR?
The MPU in the S912XEQ384BMALR enforces hardware-level memory access policies across eight configurable regions with 8-byte granularity. It prevents unauthorized writes or code execution in protected areas-triggering a non-maskable interrupt on violation. This capability supports ISO 26262 ASIL-B compliance by isolating safety-critical firmware from application-level faults.
Can the S912XEQ384BMALR operate without an external crystal?
No-the S912XEQ384BMALR requires an external 4–16 MHz crystal connected to XTAL/EXTAL pins to initialize the OSC_LCP oscillator. It does not include an internal RC oscillator capable of meeting automotive timing accuracy requirements. The crystal feeds the IPLL for stable 50 MHz CPU and 100 MHz XGATE clocks, and supports fast wake-up from STOP mode.
S912XEQ384BMALR 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:
- 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 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384BMALR FAQ
1.How can I place an order for S912XEQ384BMALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384BMALR 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 S912XEQ384BMALR reliable?
The price and inventory of S912XEQ384BMALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384BMALR is usually 5 days.
3.What payment methods are accepted for S912XEQ384BMALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384BMALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384BMALR?
S912XEQ384BMALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384BMALR 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 S912XEQ384BMALR?
For technical support, including S912XEQ384BMALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384BMALR requirements.
6.How does Aetrix verify that S912XEQ384BMALR is sourced from the original manufacturer or authorized distributors?
All S912XEQ384BMALR 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 S912XEQ384BMALR meets industry standards.
7.What is the process for return or replacement of S912XEQ384BMALR?
All S912XEQ384BMALR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384BMALR, 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 S912XEQ384BMALR part is unused and in its original packaging.
Return procedure for S912XEQ384BMALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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