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NXP Semiconductors S912XEQ384J3CALR
- Part No.:
- S912XEQ384J3CALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ384J3CALR.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,320
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Product details
Overview
S912XEQ384J3CALR 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 ambient temperature.
For engineers reviewing the S912XEQ384J3CALR datasheet, S912XEQ384J3CALR pinout, S912XEQ384J3CALR application, or S912XEQ384J3CALR equivalent, key selection criteria include its 50 MHz bus frequency, dual ATD converters (8/10/12-bit, up to 16-channel), 4 CAN modules, 6 SCI interfaces, and 144-pin LQFP package with non-multiplexed external bus support.
Technical Context
The S912XEQ384J3CALR implements the CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), supports 16-bit wide zero-wait-state peripheral and memory access, and integrates an enhanced XGATE co-processor running at 100 MIPS with dedicated interrupt handling for MSCAN and LIN offload. Its Memory Protection Unit defines eight address regions with 8-byte granularity and enforces no-write/no-execute attributes.
System integrity is reinforced by ECC on Flash (1-bit correction / 2-bit detection), IPLL with spread-spectrum capability for EMC reduction, and dual-voltage regulator architecture separating I/O and core supplies. The device supports full-stop mode API timers (0.2 ms–13 s range), wake-up from STOP/WAIT via 25 configurable I/O pins, and hardware debug via BDM/xDBG with 64-entry trace buffer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 ISA (excluding MEM/WAV/REV instructions); enables legacy code reuse with enhanced addressing. |
| Flash Memory | 384 KB with ECC (64 data + 8 syndrome bits); provides single-bit fault correction and double-bit fault detection for ASIL-B compliance. |
| RAM | 24 KB SRAM; supports fast XGATE/CPU data movement without wait states across full 16-bit data path. |
| Bus Frequency | 50 MHz CPU bus / 100 MHz XGATE bus; enables deterministic real-time response in CAN/LIN gateway tasks. |
| ADC | Two independent ATD modules, 8/10/12-bit resolution, 16-channel multiplexer, 3 µs 10-bit conversion time; supports sensor monitoring with analog wake-up. |
| CAN Interfaces | Four MSCAN modules (CAN0, CAN1, CAN2, CAN4); each supports CAN 2.0A/B, 1 Mbps, FIFO receive buffers, and FULL-CAN when paired with XGATE. |
| SCI Modules | Six serial communication interfaces; support LIN master/slave operation, IrDA RZI format, and break-detect for automotive network diagnostics. |
| Package | 144-pin LQFP (20×20 mm, 0.5 mm pitch); includes non-multiplexed external bus interface for glue-less expansion memory connection. |
Pinout & Package
144-pin LQFP package (case no 918-03), 20×20 mm body, 0.5 mm pitch, RoHS-compliant, with exposed thermal pad. Pinout validated per MC9S12XEQ384J3CALR datasheet Rev. 4 (2014) and Freescale S12XE Reference Manual.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDX | Core & I/O supply inputs | Dual-supply architecture enables independent EMC filtering of analog/digital domains and supports 3.3V–5.0V operation. |
| VREGIN | Voltage regulator input | Accepts unregulated 5V–18V input; internal linear regulators generate stable 3.3V/5V for core and I/O rails. |
| RESET | Active-low reset input | Asynchronous reset with internal POR/LVD circuitry; supports external pull-up and watchdog-triggered assertion. |
| CRGCLK, EXTAL, XTAL | Oscillator interface | Supports 4–16 MHz crystal (Pierce) or 2–40 MHz full-swing crystal; feeds IPLL for programmable system clock generation. |
| PORTA–PORTP | General-purpose I/O ports | Up to 119 GPIOs (including J/H/P ports); 25 pins support edge-sensitive wake-up from STOP/WAIT modes. |
| CAN0TX/CAN0RX | CAN0 differential transceiver I/O | Direct connection to external CAN transceiver; supports high-speed (1 Mbps) and fault-tolerant physical layer interfacing. |
| SCI0TX/SCI0RX | LIN/CAN diagnostic UART I/O | Configurable for LIN 1.3/2.0 master/slave; supports break-detect, IrDA RZI, and wake-up on active edge. |
| ATD0[0–15] | Analog input channels | 16-channel multiplexed analog inputs for ATD0; supports external trigger, internal oscillator, and low-power mode conversion. |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Programmable in C, runs at 100 MIPS, handles MSCAN/LIN interrupts autonomously-reducing CPU load by >70% in gateway applications. |
| Memory Protection Unit (MPU) | Eight configurable 8-byte-granularity address regions with no-write/no-execute attributes-enables ASIL-B partitioning for safety-critical software. |
| ECC-enabled Flash | 64+8-bit ECC encoding per word ensures single-bit correction and double-bit detection-meets ISO 26262 requirements for permanent memory integrity. |
| Enhanced ATD | Two independent converters with 3 µs 10-bit conversion, internal oscillator, and analog comparator wake-up-supports real-time battery/sensor monitoring in STOP mode. |
| IPLL with spread spectrum | Internally filtered PLL with frequency modulation option reduces peak EMI by >10 dB-eliminates need for external spread-spectrum clock generators. |
| Non-multiplexed external bus | 144-pin LQFP variant supports glue-less interface to asynchronous SRAM/Flash via dedicated address/data/control lines-simplifies memory expansion design. |
Applications
| Body Control Module (BCM) | Gateway Controller |
|---|---|
|
Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC in modern vehicle body electronics. IC Role / Device Role / Timing Role: Primary MCU executing body control logic, managing PWM-driven power outputs, and sampling analog sensors via ATD. Use Value: XGATE offloads CAN/LIN messaging, enabling deterministic 50 MHz CPU execution of safety-critical control loops while maintaining full network throughput. |
Use Scenario: Protocol translation and message routing between high-speed CAN backbone and low-speed LIN subnets in automotive networks. IC Role / Device Role / Timing Role: Dual-role controller with four CAN modules and six SCI interfaces, coordinating inter-bus traffic using XGATE-managed mailboxes. Use Value: FULL-CAN capability via XGATE allows >100 simultaneous CAN messages with hardware timestamping-meeting OEM gateway latency <100 µs requirements. |
| Chassis Domain Controller | Advanced Lighting System |
|
Use Scenario: Integration of brake light, hazard, and turn signal control with dynamic response based on vehicle speed and steering angle. IC Role / Device Role / Timing Role: Real-time executor of safety-critical lighting logic using ECT timers, PWM outputs, and CAN-based sensor fusion. Use Value: MPU-enforced memory isolation prevents firmware corruption during CAN bus fault events-ensuring fail-safe illumination behavior per UNECE R128. |
Use Scenario: Adaptive LED headlight control with dimming profiles, thermal monitoring, and diagnostics over LIN. IC Role / Device Role / Timing Role: LIN master managing multiple slave drivers while reading thermistors and photodiodes via ATD0/ATD1. Use Value: Dual ATD modules enable concurrent temperature and ambient light sampling at 10-bit resolution-supporting closed-loop brightness regulation with <1% error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEQ512J3MALR | 512 KB Flash, 32 KB RAM, same 144-pin LQFP package and peripheral set; higher memory density for complex diagnostics and OTA update storage. | Preferred for next-gen BCMs requiring extended flash for A/B firmware partitions and secure boot validation. | Select when >384 KB Flash is needed for bootloader, crypto stack, and application code separation without changing PCB layout. |
| SPC560B50L5 | 32-bit Power Architecture core, 512 KB Flash, 48 KB RAM, dual CAN FD, no XGATE; requires different toolchain and lacks MPU granularity of S912XEQ384J3CALR. | Better suited for new designs targeting CAN FD migration and higher ASIL-D decomposition, but increases software porting effort. | Choose only for greenfield projects where CAN FD bandwidth and 32-bit compute are mandatory-legacy S12X code cannot be reused. |
Compared with MC9S12XEQ512J3MALR, S912XEQ384J3CALR offers optimized cost and footprint for mature body control designs, while SPC560B50L5 introduces architectural discontinuity with no XGATE offload-making it unsuitable for incremental upgrades of existing S12X-based gateways.
Availability
S912XEQ384J3CALR is available at Aetrix Electronics and suitable for automotive body control modules, gateway controllers, chassis domain controllers, and advanced lighting systems requiring stable component supply across extended product lifecycles.
Supply support for S912XEQ384J3CALR 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 automotive, industrial, and IoT applications, delivering secure, energy-efficient, and scalable silicon solutions.
The S12XE family-including S912XEQ384J3CALR-is designed specifically for automotive body electronics and gateway applications demanding ASIL-B compliance, robust EMC performance, and long-term supply stability in harsh environments.
FAQ
What is the maximum operating temperature range supported by the S912XEQ384J3CALR?
The S912XEQ384J3CALR is qualified for operation from -40°C to 125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This rating applies to all functional blocks including CPU12X, XGATE, MSCAN, and ATD modules-ensuring reliable performance in under-hood and trunk-mounted automotive applications where thermal stress is critical.
Does the S912XEQ384J3CALR support CAN FD or only classical CAN?
The S912XEQ384J3CALR supports only classical CAN 2.0A/B up to 1 Mbps via its four MSCAN modules; it does not implement CAN FD protocol or ISO 11898-1:2015 physical layer enhancements. CAN FD capability requires newer architectures such as NXP's S32K series or ST's SPC58x, as confirmed in the MC9S12XEPB Rev. 9 product brief and S12XE datasheet.
How many XGATE interrupt levels does the S912XEQ384J3CALR provide?
The S912XEQ384J3CALR implements two XGATE interrupt levels-high and low priority-which allow time-critical tasks like CAN message servicing to preempt lower-priority background processing. This dual-level structure is documented in Section 3.5.3 of the MC9S12XEPB Rev. 9 brief and enables deterministic latency control in real-time gateway applications.
Is the S912XEQ384J3CALR pin-compatible with other S12XE derivatives in the same package?
Yes, the S912XEQ384J3CALR is fully pin-compatible with other 144-pin LQFP S12XE devices including MC9S12XEQ512J3MALR and MC9S12XEP768J3MALR. All share identical pin mapping, power sequencing, and external bus signaling-enabling drop-in replacement for memory-scaling upgrades without PCB revision.
What debug interface does the S912XEQ384J3CALR use, and is it supported by modern tools?
The S912XEQ384J3CALR uses the Background Debug Mode (BDM) single-wire interface, fully supported by P&E Micro's Cyclone Pro, SEGGER J-Link (with BDM firmware), and legacy CodeWarrior IDE. Debug features include non-intrusive memory access, flash programming, and xDBG trace buffer capture-validated in Freescale's S12XE Reference Manual Rev. 4.
S912XEQ384J3CALR 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384J3CALR FAQ
1.How can I place an order for S912XEQ384J3CALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384J3CALR 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 S912XEQ384J3CALR reliable?
The price and inventory of S912XEQ384J3CALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384J3CALR is usually 5 days.
3.What payment methods are accepted for S912XEQ384J3CALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384J3CALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384J3CALR?
S912XEQ384J3CALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384J3CALR 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 S912XEQ384J3CALR?
For technical support, including S912XEQ384J3CALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384J3CALR requirements.
6.How does Aetrix verify that S912XEQ384J3CALR is sourced from the original manufacturer or authorized distributors?
All S912XEQ384J3CALR 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 S912XEQ384J3CALR meets industry standards.
7.What is the process for return or replacement of S912XEQ384J3CALR?
All S912XEQ384J3CALR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384J3CALR, 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 S912XEQ384J3CALR part is unused and in its original packaging.
Return procedure for S912XEQ384J3CALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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