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NXP Semiconductors S912XEQ384J3MAG
- Part No.:
- S912XEQ384J3MAG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
S912XEQ384J3MAG.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,253
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Product details
Overview
S912XEQ384J3MAG 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 at up to 50 MHz bus frequency with -40°C to 125°C operation.
For engineers reviewing the S912XEQ384J3MAG datasheet, S912XEQ384J3MAG pinout, S912XEQ384J3MAG application, or S912XEQ384J3MAG equivalent, key selection considerations include its 144-pin LQFP package, dual ATD converters (8/10/12-bit), 6 MSCAN modules, XGATE co-processor running at 100 MIPS, and Memory Protection Unit (MPU) for ASIL-B–capable system integrity.
Technical Context
The S912XEQ384J3MAG implements the CPU12X core with full MC9S12 instruction set compatibility (excluding five removed fuzzy instructions) and supports 16-bit wide zero-wait-state accesses across all peripherals and memories. Its IPLL clock generator enables frequency modulation for EMC reduction and fast wake-up from STOP mode.
XGATE operates at 100 MHz-twice the 50 MHz CPU bus frequency-and handles MSCAN mailbox management, LIN protocol framing, and SPI/SCI data movement autonomously. The MPU enforces eight configurable address regions with 8-byte granularity, supporting no-write and no-execute protection attributes plus non-maskable violation interrupts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 ISA (no MEM/WAV/REV instructions); enables legacy code reuse with enhanced addressing. |
| Flash Memory | 384 KB Flash with 64+8-bit ECC (1-bit correction / 2-bit detection); supports secure erase/program and automated algorithms. |
| RAM | 24 KB on-chip RAM; used for XGATE buffers, stack, and real-time variables without external memory dependency. |
| ADC | Dual ATD modules, each with 8/10/12-bit resolution, 16-channel multiplexer, and 3 µs 10-bit conversion time; enables simultaneous sensor monitoring. |
| CAN Interfaces | 6 MSCAN modules (CAN0–CAN4 + CAN5), CAN 2.0A/B compliant, up to 1 Mbps bit rate, with FULL-CAN capability when paired with XGATE. |
| XGATE Co-processor | Programmable RISC engine running at 100 MHz; offloads CAN/LIN/SCI/SPI handling, freeing CPU for application logic. |
| Operating Temp | -40°C to 125°C ambient range; qualified for under-hood automotive environments per AEC-Q100 Grade 0. |
| Supply Voltage | 3.3 V ±5% / 5.0 V +10% single supply; separate VREG and I/O supplies enable optimized EMC filtering. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). Pinout validated per MC9S12XEQ384J3MAG datasheet Rev. 7 and Freescale S12XE Reference Manual.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO | Power supply inputs | Dedicated 3.3V/5V core and I/O rails; enable independent EMC filtering and noise isolation. |
| RESET | Active-low reset input | Asynchronous reset with internal POR/LVD circuitry; supports hardware watchdog recovery and safe boot. |
| XTAL, EXTAL | Crystal oscillator terminals | Support 4–16 MHz Pierce crystal; feed IPLL for stable 50 MHz bus clock generation. |
| MSCAN0_TX, MSCAN0_RX | CAN0 differential transceiver pins | Direct connection to ISO 11898-compliant CAN physical layer; require external termination and common-mode choke. |
| PORTA[7:0] | General-purpose I/O port | 8-bit bidirectional port with configurable pull-up/down, hysteresis, and drive strength; usable for PWM, GPIO, or ECT capture. |
| XGATE_IRQ | XGATE interrupt request output | Signals CPU when XGATE completes high-priority tasks (e.g., CAN message processing); enables deterministic latency control. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute policies to isolate firmware partitions and meet ASIL-B requirements. |
| ECC-enabled Flash | 64+8-bit ECC per 64-bit word enables real-time single-bit error correction and double-bit fault detection during runtime execution. |
| XGATE Co-processor | 100 MIPS RISC engine executing C code; handles CAN mailbox scheduling, LIN frame assembly, and SPI/SCI DMA without CPU cycles. |
| Enhanced ATD Converter | Dual 12-bit capable ADCs with internal oscillator support; allows analog sampling during STOP mode and wake-up on threshold violation. |
| IPLL Clock Generator | Frequency-modulated PLL with spread-spectrum option; reduces electromagnetic emissions without external components or layout changes. |
| Background Debug (BDM) | Single-wire BDM interface supporting non-intrusive flash programming, real-time memory access, and security lock/unlock via CodeWarrior. |
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 managing power drivers via PWM, reading analog sensors (temperature, position), and coordinating CAN/LIN communication. Use Value: XGATE offloads 6 MSCAN message queues and LIN protocol framing, enabling deterministic response to switch events within <50 µs. |
Use Scenario: Protocol translation between high-speed CAN-FD backbone and low-speed LIN subnets in distributed vehicle architectures. IC Role / Device Role / Timing Role: Real-time bridge MCU routing messages between CAN0–CAN4 and SCI-based LIN interfaces using hardware FIFOs and XGATE-managed buffers. Use Value: Dual ATD monitors power rail health while XGATE maintains >95% CAN throughput at 500 kbps even during CPU-intensive diagnostics. |
| Smart Junction Box | Chassis Domain Controller |
|
Use Scenario: Power distribution and load switching unit integrating fuse monitoring, short-circuit protection, and thermal management. IC Role / Device Role / Timing Role: Safety-critical controller executing ISO 26262 ASIL-B software partitions enforced by MPU and ECC-protected Flash. Use Value: MPU isolates diagnostic firmware from control firmware; ECC ensures bootloader integrity during over-the-air updates. |
Use Scenario: Integrated chassis controller managing ABS, ESC, and active suspension subsystems via CAN and SENT interfaces. IC Role / Device Role / Timing Role: Deterministic timing node synchronizing sensor sampling (ATD), actuator PWM, and CAN message transmission using PIT and RTI modules. Use Value: 50 MHz bus clock and zero-wait-state memory access guarantee ≤2 µs interrupt latency for critical safety interrupts. |
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 non-multiplexed external bus and extra I/O. | Targeted for high-end gateways requiring external memory expansion and >150 I/O pins. | Select when needing >384 KB Flash, external SRAM/Flash interfacing, or higher I/O count than S912XEQ384J3MAG's 119 I/O. |
| S912XDP512J3MAG | 512 KB Flash, 32 KB RAM, same 144-LQFP package; retains identical peripheral set except 8-channel ATD instead of dual 8/10/12-bit ATD. | Used in mid-tier BCMs where larger Flash supports complex diagnostics but dual ATD not required. | Choose when prioritizing Flash headroom over dual high-resolution ADCs-e.g., for firmware-over-the-air update storage. |
Compared with S912XEQ384J3MAG, MC9S12XEP100MAL offers scalable memory and I/O for future-proofing but requires PCB redesign due to MAPBGA packaging, while S912XDP512J3MAG provides more Flash in identical footprint but lacks second ATD module-making it unsuitable for dual-sensor fusion use cases.
Availability
S912XEQ384J3MAG is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, smart junction boxes, and chassis domain controllers requiring stable component supply, long lifecycle support, and AEC-Q100 qualification.
Supply support for S912XEQ384J3MAG 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 deep heritage in automotive MCUs dating to Motorola and Freescale.
The S12XE family-including S912XEQ384J3MAG-is designed specifically for ASIL-B–capable automotive body electronics, delivering enhanced system integrity via MPU, ECC Flash, and XGATE co-processing while maintaining 16-bit cost and power efficiency.
FAQ
What is the maximum operating frequency of the S912XEQ384J3MAG CPU bus?
The S912XEQ384J3MAG CPU bus operates at a maximum frequency of 50 MHz. This is achieved via the internal IPLL clock generator, which multiplies the input crystal frequency (4–16 MHz) without requiring external components. All on-chip peripherals and memories support zero-wait-state operation at this speed, ensuring deterministic real-time performance in automotive control loops.
Does the S912XEQ384J3MAG support CAN FD or only classical CAN?
The S912XEQ384J3MAG 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 should consider NXP's S32K series or later-generation automotive MCUs-not the S12XE family.
How many analog-to-digital converter (ATD) modules does the S912XEQ384J3MAG include?
The S912XEQ384J3MAG 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 sampling during STOP mode and wake-up on voltage threshold violation-critical for low-power body electronics monitoring.
Is the XGATE co-processor in the S912XEQ384J3MAG programmable in C language?
Yes, the XGATE co-processor in the S912XEQ384J3MAG is fully programmable in standard C using CodeWarrior Development Studio. Its RISC architecture supports logical, arithmetic, and bit manipulation operations, and it runs at 100 MHz-twice the CPU bus frequency-enabling autonomous handling of CAN mailbox management, LIN framing, and SPI/SCI data transfers without CPU intervention.
What package type and pin count does the S912XEQ384J3MAG use?
The S912XEQ384J3MAG uses a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch, case number 918-03). This package provides 119 general-purpose I/O pins plus dedicated power, ground, clock, reset, and debug signals-optimized for automotive PCB layouts requiring thermal reliability and mechanical robustness.
S912XEQ384J3MAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-LQFP
- 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:
- 119
- 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 24x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384J3MAG FAQ
1.How can I place an order for S912XEQ384J3MAG through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384J3MAG 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 S912XEQ384J3MAG reliable?
The price and inventory of S912XEQ384J3MAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384J3MAG is usually 5 days.
3.What payment methods are accepted for S912XEQ384J3MAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384J3MAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384J3MAG?
S912XEQ384J3MAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384J3MAG 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 S912XEQ384J3MAG?
For technical support, including S912XEQ384J3MAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384J3MAG requirements.
6.How does Aetrix verify that S912XEQ384J3MAG is sourced from the original manufacturer or authorized distributors?
All S912XEQ384J3MAG 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 S912XEQ384J3MAG meets industry standards.
7.What is the process for return or replacement of S912XEQ384J3MAG?
All S912XEQ384J3MAG units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384J3MAG, 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 S912XEQ384J3MAG part is unused and in its original packaging.
Return procedure for S912XEQ384J3MAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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