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NXP Semiconductors S912XEQ384F1CAG
- Part No.:
- S912XEQ384F1CAG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
S912XEQ384F1CAG.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,077
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Product details
Overview
S912XEQ384F1CAG 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 operates at up to 50 MHz bus frequency, supports -40°C to 125°C ambient temperature, and targets body control modules requiring robust system integrity and CAN/LIN gateway functionality.
For engineers reviewing the S912XEQ384F1CAG datasheet, S912XEQ384F1CAG pinout, S912XEQ384F1CAG application, or S912XEQ384F1CAG equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options for automotive embedded design and production sourcing.
Technical Context
The S912XEQ384F1CAG implements the CPU12X 16-bit core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), enhanced indexed addressing, and large data segment access independent of PPAGE. Its Memory Protection Unit (MPU) defines eight address regions with 8-byte granularity and enforces no-write/no-execute attributes with non-maskable violation interrupts.
XGATE operates at 100 MIPS and runs independently of the CPU at twice the bus frequency (100 MHz), servicing all peripherals-including four MSCAN modules and dual ATD converters-without wait states. The IPLL clock generator provides frequency multiplication with spread-spectrum modulation support for EMC reduction, and the on-chip voltage regulator enables stable 3.3–5.0 V operation across extended temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, compatible with MC9S12 ISA (minus MEM/WAV/REV instructions), enabling legacy code reuse with enhanced addressing. |
| Flash Memory | 384 KB with ECC: 1-bit fault correction + 2-bit fault detection per 64-bit word, supporting secure, high-integrity program storage. |
| RAM | 24 KB SRAM, accessible without wait states for both CPU and XGATE, enabling deterministic real-time buffer handling. |
| Operating Voltage | 3.3 V ±5% to 5.0 V +10%, with separate VREG and I/O supplies for optimized EMC filtering and noise immunity. |
| Temperature Range | -40°C to 125°C ambient, qualified for under-hood automotive applications including body controllers and gateways. |
| Bus Frequency | 50 MHz maximum CPU bus frequency; XGATE runs at 100 MHz, enabling high-throughput peripheral offload. |
| CAN Modules | 4 MSCAN modules (CAN0, CAN1, CAN2, CAN4), each compliant with CAN 2.0A/B, supporting up to 1 Mbps bit rate and FULL-CAN when paired with XGATE. |
| ATD Converter | Dual 8/10/12-bit ATD modules with 16-channel multiplexer, 3 µs 10-bit conversion time, and wake-up capability from STOP mode. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). 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 | Dedicated analog (VDDA), core (VDD), and XGATE (VDDX) rails enable independent filtering and noise isolation. |
| VSS, VSSA, VSSX | Ground returns | Separate analog (VSSA), digital (VSS), and XGATE (VSSX) grounds minimize coupling and improve signal integrity. |
| 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 mode (Normal, Special Bootstrap, Background Debug) at power-on; latched during reset assertion. |
| XTAL, EXTAL | Crystal oscillator interface | Supports 4–16 MHz Pierce crystal (OSC_LCP); enables low-jitter clock source for IPLL and real-time timing. |
| CAN0_TX, CAN0_RX | CAN0 differential transceiver I/O | Direct connection to external CAN transceiver; supports dominant/recessive level signaling and bus-off recovery. |
| SCI0_TX, SCI0_RX | LIN-capable UART interface | Configurable for LIN 1.3/2.0 master/slave operation via XGATE offload; includes break detect and collision monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity, enforcing no-write/no-execute policies and triggering non-maskable interrupts on violations. |
| XGATE Co-processor | 100 MIPS RISC engine running at 100 MHz, fully programmable in C, servicing all peripherals-including 4 CAN modules-without CPU intervention. |
| ECC-Protected Flash | 64-bit data + 8-bit syndrome bits per word enable real-time single-bit correction and double-bit detection, critical for ASIL-B compliance. |
| Enhanced ATD Converter | Dual 10-bit ATD with 3 µs conversion time, internal oscillator for STOP-mode operation, and analog-compare wake-up for low-power sensor monitoring. |
| IPLL Clock Generator | Frequency-modulated PLL with spread-spectrum option reduces EMI emissions; no external filter components required for stable 50 MHz bus clock. |
| MSCAN Modules | Four independent CAN 2.0A/B controllers with 1 Mbps capability, 5 receive buffers/FIFO, 3 prioritized transmit buffers, and XGATE-accelerated FULL-CAN. |
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 PWM-driven power outputs, ATD-based sensor reads (temperature, position), and LIN communication with local nodes. Use Value: MPU-enforced memory partitioning isolates safety-critical functions; XGATE handles LIN polling and CAN message routing while CPU manages application logic. |
Use Scenario: Protocol translation between high-speed CAN backbone (powertrain/chassis) and low-speed LIN clusters (interior sensors, switches). IC Role / Device Role / Timing Role: Dual-bus bridge with concurrent CAN0/CAN1 and SCI0/SCI1 configured as LIN master, synchronized via IPLL-derived clocks. Use Value: Four MSCAN modules allow simultaneous multi-bus arbitration; XGATE executes mailbox management and frame reassembly with <1 µs latency. |
| Roof Module Controller | Seat Control Unit |
Use Scenario: Integrated sunroof, panoramic roof, and ambient lighting control with tilt/slide actuation and RGB LED dimming. IC Role / Device Role / Timing Role: Real-time PWM generator (8×8-bit or 4×16-bit) with emergency shutdown input, coupled with ATD for potentiometer feedback and thermal monitoring. Use Value: Dedicated 16-bit ECT channels provide precise position capture; 24 KB RAM buffers motor profiles and fade sequences without external memory. |
Use Scenario: Motorized seat positioning with memory presets, heating element control, and occupant detection via capacitive sensing. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating ATD (seat position), PWM (heater duty cycle), and SPI (capacitive touch IC) data under MPU-protected task scheduling. Use Value: ECC Flash ensures firmware integrity across 10,000+ ignition cycles; API timer provides ±10% accurate 5 s timeout for heater auto-shutdown. |
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; adds fifth CAN module and 8-channel ECT vs. S912XEQ384F1CAG's 4 CAN and 4-channel ECT. | Targeted at higher-integration gateways requiring >4 CAN buses or expanded I/O (152 pins vs. 119 on 144LQFP). | Select when needing larger Flash for OTA updates or additional CAN/LIN interfaces; requires PCB redesign due to MAPBGA footprint. |
| S912XEQ512J1CAG | 512 KB Flash, 32 KB RAM, same 144LQFP package and pinout; identical peripheral count (4 CAN, 2 ATD, XGATE) but higher memory density. | Drop-in upgrade path for designs approaching Flash limit; retains same thermal profile and EMC behavior. | Choose for future-proofing without layout change; validated pin-compatible replacement per Freescale S12XE Family documentation. |
Compared with S912XEQ384F1CAG, MC9S12XEP768MAG offers greater integration at the cost of package and layout incompatibility, while S912XEQ512J1CAG provides seamless memory scalability in the identical 144LQFP form factor-making it the preferred choice for incremental BOM optimization.
Availability
S912XEQ384F1CAG is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, roof modules, and seat control units requiring stable component supply across extended temperature and long product lifecycles.
Supply support for S912XEQ384F1CAG 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 S912XEQ384F1CAG belongs to the S12XE family-designed specifically for automotive body electronics demanding ASIL-B–capable system integrity, CAN/LIN protocol handling, and extended temperature resilience without compromising 16-bit code efficiency.
FAQ
What is the maximum operating temperature range certified for the S912XEQ384F1CAG?
The S912XEQ384F1CAG is qualified for operation from -40°C to 125°C ambient temperature, meeting automotive under-hood requirements. This rating is validated per AEC-Q100 Grade 1 specifications and applies to the 144LQFP package with specified thermal derating curves in the official datasheet.
Does the S912XEQ384F1CAG support CAN FD or only classical CAN 2.0?
The S912XEQ384F1CAG supports only classical CAN 2.0A/B protocols-not CAN FD-as confirmed by its MSCAN module specification in the MC9S12XE Family Product Brief. It delivers up to 1 Mbps bit rate, 0–8 byte payloads, and FULL-CAN capability when coordinated with the XGATE co-processor.
Is the S912XEQ384F1CAG pin-compatible with other S12XE family members in the 144LQFP package?
Yes-the S912XEQ384F1CAG shares identical 144LQFP pinout and electrical characteristics with other S12XE derivatives in that package (e.g., S912XEQ512J1CAG, S912XET256J1CAG), enabling direct substitution where Flash/RAM requirements align, per Freescale's S12XE Family compatibility statements.
How does the Memory Protection Unit (MPU) function in the S912XEQ384F1CAG?
The S912XEQ384F1CAG MPU defines eight configurable address regions with 8-byte granularity, enforcing no-write and no-execute attributes. Any access violation triggers a non-maskable interrupt, enabling runtime enforcement of software partitioning-critical for ISO 26262 ASIL-B compliance in automotive safety applications.
What debug interface does the S912XEQ384F1CAG support, and is external hardware required?
The S912XEQ384F1CAG integrates a single-wire Background Debug Module (BDM) compliant with Freescale's standard protocol. Debugging requires an external BDM pod (e.g., P&E Micro USB-ML-12), but no JTAG header or additional pins are needed-the interface uses dedicated BKGD pin and ground.
S912XEQ384F1CAG 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384F1CAG FAQ
1.How can I place an order for S912XEQ384F1CAG through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384F1CAG 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 S912XEQ384F1CAG reliable?
The price and inventory of S912XEQ384F1CAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384F1CAG is usually 5 days.
3.What payment methods are accepted for S912XEQ384F1CAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384F1CAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384F1CAG?
S912XEQ384F1CAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384F1CAG 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 S912XEQ384F1CAG?
For technical support, including S912XEQ384F1CAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384F1CAG requirements.
6.How does Aetrix verify that S912XEQ384F1CAG is sourced from the original manufacturer or authorized distributors?
All S912XEQ384F1CAG 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 S912XEQ384F1CAG meets industry standards.
7.What is the process for return or replacement of S912XEQ384F1CAG?
All S912XEQ384F1CAG units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384F1CAG, 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 S912XEQ384F1CAG part is unused and in its original packaging.
Return procedure for S912XEQ384F1CAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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