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NXP Semiconductors S912XEQ384J3VALR
- Part No.:
- S912XEQ384J3VALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ384J3VALR.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
S912XEQ384J3VALR 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 S912XEQ384J3VALR datasheet, S912XEQ384J3VALR pinout, S912XEQ384J3VALR application, or S912XEQ384J3VALR equivalent, this device supports real-time I/O offloading via XGATE, fault-tolerant Flash with 1-bit correction/2-bit detection, and dual ATD converters for sensor acquisition in harsh automotive environments.
Technical Context
The S912XEQ384J3VALR implements the CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), executes 16-bit wide accesses without wait states, and integrates an enhanced XGATE co-processor running at 100 MIPS with dedicated interrupt levels for peripheral servicing. Its Memory Protection Unit defines eight address regions with 8-byte granularity and enforces no-write/no-execute attributes.
It features a Frequency Modulated PLL (IPLL) for EMC reduction, dual 8-channel ATD converters with 3 µs 10-bit conversion time and internal oscillator support in STOP mode, and up to five MSCAN modules supporting CAN 2.0A/B, 1 Mbps bit rate, and FULL-CAN operation when coordinated with XGATE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, fully compatible with MC9S12 ISA (minus MEM/WAV/WAVR/REV/REVW), enabling legacy code reuse without recompilation. |
| Flash Memory | 384 KB Flash with 64+8 ECC bits per word: enables single-bit error correction and double-bit error detection during execution and programming. |
| RAM | 24 KB on-chip RAM, accessible by both CPU and XGATE without wait states for deterministic real-time data buffering. |
| XGATE Co-processor | Programmable RISC engine running at 100 MIPS, servicing all peripherals independently-enables FULL-CAN and LIN master/slave offload without CPU intervention. |
| ATD Converter | Two independent 8/10/12-bit ATD modules, each with 16-channel multiplexer and 3 µs 10-bit conversion time-supports fast analog sensing in body electronics. |
| Operating Temperature | -40°C to 125°C ambient range: qualified for under-hood and powertrain-adjacent automotive locations requiring extended thermal robustness. |
| Package | 144-pin LQFP (20×20 mm, 0.5 mm pitch): provides 119 I/O pins including 25 with wake-up capability from STOP/WAIT modes. |
| MSCAN Modules | Four integrated MSCAN modules (CAN0–CAN3), each supporting CAN 2.0A/B, 0–8 byte payloads, and programmable bit rates up to 1 Mbps. |
Pinout & Package
144-pin LQFP package (case no 918-03), 20×20 mm body, 0.5 mm pitch, with exposed thermal pad. Pinout validated per MC9S12XE Data Sheet "Port Availability by Package Option" table for 144LQFP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs | Separate 5V supplies for core logic (VDD), analog (VDDA), and XGATE (VDDX) enable optimized EMC filtering and noise isolation. |
| VSS, VSSA, VSSX | Ground returns | Dedicated ground planes per supply domain minimize coupling between digital, analog, and co-processor subsystems. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; triggers POR, COP timeout, or MPU violation recovery sequences. |
| MODB, MODA | Mode selection inputs | Configure boot source (internal Flash vs. external bus) and debug interface (BDM vs. xDBG) at power-on reset. |
| XTAL, EXTAL | Crystal oscillator terminals | Support 4–16 MHz Pierce crystal; feed OSC_LCP module for stable clock generation across temperature and voltage. |
| PORTH[7:0] | General-purpose I/O port | 8-bit bidirectional port with configurable pull-up/pull-down, hysteresis, and drive strength-used for discrete switch/sensor interfacing. |
| CAN0_TX, CAN0_RX | CAN transceiver interface | Differential signal pair for CAN0 bus communication; electrically isolated via external transceiver (e.g., TJA1042). |
| ATD0[7:0] | Analog input channels | Eight dedicated analog input pins for first ATD converter; support 0–5 V input range with internal reference. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Eight configurable 8-byte-granularity address regions with no-write/no-execute attributes-prevents unauthorized code injection or data corruption in safety-critical tasks. |
| ECC-enabled Flash | 64 data + 8 syndrome bits per word correct single-bit faults and detect double-bit faults during read/write-ensures runtime integrity of firmware and calibration data. |
| XGATE Co-processor | 100 MIPS RISC engine with two interrupt levels handles CAN/LIN messaging, PWM updates, and ADC triggers autonomously-reduces CPU load to <15% in gateway use cases. |
| IPLL Clock Generator | Frequency-modulated PLL eliminates narrowband EMI peaks; spreads spectrum over ±0.5% range-meets CISPR 25 Class 5 radiated emissions limits without external filters. |
| Enhanced ATD | Two independent converters with internal oscillator support wake-up from STOP mode on analog threshold crossing-enables low-power sensor monitoring with <5 µA quiescent current. |
| Background Debug (BDM) | Single-wire BDM interface supports non-intrusive flash programming, real-time memory inspection, and security lock/unlock-validates field firmware updates without hardware debugger. |
Applications
| Body Control Module (BCM) | Gateway Controller |
|---|---|
Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC actuators in modern vehicle body electronics. IC Role / Device Role / Timing Role: Primary MCU executing body control logic, driving high-side/low-side power switches via PWM, and acquiring analog sensor data (temperature, humidity, position). Use Value: XGATE offloads CAN message handling and LIN slave responses, freeing CPU for real-time actuator control with jitter <1 µs. |
Use Scenario: Protocol translation and message routing between high-speed CAN (powertrain), low-speed CAN (body), and LIN (door modules, seats). IC Role / Device Role / Timing Role: Dual-bus gateway MCU managing concurrent CAN0/CAN1/CAN2 traffic and LIN0/LIN1 frames using dedicated XGATE tasks. Use Value: Four MSCAN modules and XGATE's mailbox arbitration eliminate CPU polling-achieves <50 µs end-to-end latency for critical diagnostic messages. |
| Smart Junction Box | Chassis Domain Controller |
Use Scenario: Power distribution and load switching in centralized junction boxes with fuseless electronic protection and diagnostics. IC Role / Device Role / Timing Role: System-level power manager monitoring current sense inputs, controlling MOSFET gate drivers, and reporting faults over CAN. Use Value: 119 GPIOs include 25 wake-up-capable pins and hardware current-limiting PWM outputs-supports 16 independent switched loads with cycle-by-cycle overcurrent shutdown. |
Use Scenario: Integration of suspension, brake, and steering sub-systems requiring synchronized sensor sampling and actuator command timing. IC Role / Device Role / Timing Role: Deterministic real-time controller synchronizing ATD conversions, ECT timer captures, and PWM outputs across multiple axes. Use Value: Dual ATD with internal oscillator and ECT's 16-bit free-running counter enable 100 µs phase-aligned sampling of wheel speed and steering angle sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MAG | 1 MB Flash, 64 KB RAM, 208-pin MAPBGA, 5 CAN modules, 8-channel ATD-higher memory and I/O count than S912XEQ384J3VALR. | Targeted at flagship body controllers requiring >512 KB code space and >140 I/Os; not pin-compatible due to 208-pin BGA package. | Select when scaling beyond 384 KB Flash or needing >4 CAN interfaces; requires PCB redesign. |
| S912XDP512J3MALR | 512 KB Flash, 32 KB RAM, same 144-pin LQFP package, identical XGATE/ATD/MSCAN architecture-direct pin-compatible upgrade path. | Same footprint and peripheral set; used where future firmware expansion or larger calibration tables are anticipated without layout change. | Drop-in replacement for S912XEQ384J3VALR when additional Flash/RAM headroom is required; no schematic or layout modification needed. |
Compared with MC9S12XEP100MAG, S912XEQ384J3VALR offers lower cost and smaller footprint for mid-tier body control, while S912XDP512J3MALR provides seamless scalability within the same 144LQFP package-preserving board space and qualification effort.
Availability
S912XEQ384J3VALR is available at Aetrix Electronics and suitable for automotive body control modules, gateway controllers, smart junction boxes, and chassis domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S912XEQ384J3VALR 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 heritage in automotive microcontrollers dating to Motorola and Freescale.
The S12XE family-including S912XEQ384J3VALR-was designed specifically for automotive body electronics and gateway applications demanding enhanced system integrity, real-time I/O offload, and extended temperature reliability.
FAQ
What is the maximum bus frequency supported by the S912XEQ384J3VALR?
The S912XEQ384J3VALR supports a maximum CPU bus frequency of 50 MHz and an XGATE bus frequency of 100 MHz. These frequencies are achieved using the internal IPLL with frequency modulation enabled, and they remain stable across the full -40°C to 125°C operating range without requiring external clock sources or wait states for memory or peripheral access.
Does the S912XEQ384J3VALR include Error Correction Code (ECC) for Flash memory?
Yes, the S912XEQ384J3VALR includes ECC on its 384 KB Flash memory, using 64 data bits plus 8 syndrome bits per word. This configuration enables automatic correction of single-bit errors and detection of double-bit errors during both read and program/erase operations-critical for maintaining firmware integrity in automotive safety-related functions.
How many CAN modules does the S912XEQ384J3VALR integrate, and what protocols do they support?
The S912XEQ384J3VALR integrates four MSCAN modules (CAN0–CAN3), each compliant with CAN 2.0A and 2.0B protocols. They support standard and extended identifier formats, 0–8 byte data lengths, programmable bit rates up to 1 Mbps, and FULL-CAN functionality when coordinated with the XGATE co-processor for mailbox management and filtering.
What is the role of the XGATE co-processor in the S912XEQ384J3VALR, and how is it programmed?
The XGATE co-processor in the S912XEQ384J3VALR is a programmable 100 MIPS RISC engine that handles time-critical peripheral tasks-including CAN/LIN messaging, PWM updates, and ATD triggering-without CPU intervention. It is programmed in standard C language using CodeWarrior IDE and shares memory space with the CPU12X core while operating independently on its own bus.
Is the S912XEQ384J3VALR qualified for automotive AEC-Q100 Grade 1 operation?
Yes, the S912XEQ384J3VALR is qualified per AEC-Q100 Grade 1 specifications, with guaranteed operation from -40°C to 125°C ambient temperature. This qualification covers stress testing for temperature cycling, humidity bias, and ESD-ensuring reliability in under-hood and powertrain-adjacent automotive applications where thermal and electrical robustness are mandatory.
S912XEQ384J3VALR 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384J3VALR FAQ
1.How can I place an order for S912XEQ384J3VALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384J3VALR 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 S912XEQ384J3VALR reliable?
The price and inventory of S912XEQ384J3VALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384J3VALR is usually 5 days.
3.What payment methods are accepted for S912XEQ384J3VALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384J3VALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384J3VALR?
S912XEQ384J3VALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384J3VALR 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 S912XEQ384J3VALR?
For technical support, including S912XEQ384J3VALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384J3VALR requirements.
6.How does Aetrix verify that S912XEQ384J3VALR is sourced from the original manufacturer or authorized distributors?
All S912XEQ384J3VALR 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 S912XEQ384J3VALR meets industry standards.
7.What is the process for return or replacement of S912XEQ384J3VALR?
All S912XEQ384J3VALR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384J3VALR, 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 S912XEQ384J3VALR part is unused and in its original packaging.
Return procedure for S912XEQ384J3VALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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