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NXP Semiconductors S912XEQ512J3MAL
- Part No.:
- S912XEQ512J3MAL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ512J3MAL.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,522
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Product details
Overview
S912XEQ512J3MAL from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 512 KB Flash, 32 KB RAM, and integrated MSCAN, XGATE co-processor, and Memory Protection Unit (MPU). It operates at up to 50 MHz bus frequency with ECC-protected Flash, supports -40°C to 125°C ambient operation, and targets body control modules requiring CAN/LIN communication and real-time I/O management.
For engineers reviewing the S912XEQ512J3MAL datasheet, S912XEQ512J3MAL pinout, S912XEQ512J3MAL application, or S912XEQ512J3MAL equivalent, key selection criteria include its 144-pin LQFP package, dual ATD converters (8/10/12-bit, 16-channel), 4 CAN modules, 6 SCI interfaces, and XGATE-enabled FULL-CAN offload capability in automotive gateway and body controller designs.
Technical Context
The S912XEQ512J3MAL implements a 16-bit CPU12X core with enhanced indexed addressing and full MC9S12 instruction set compatibility (excluding five fuzzy instructions). Its system integrity architecture includes MPU with eight configurable address regions (8-byte granularity), Flash ECC (1-bit correction / 2-bit detection), and supervisor/user mode separation enforced via condition code register bit.
Real-time performance is augmented by the XGATE co-processor running at 100 MIPS (100 MHz bus), servicing all peripherals-including MSCAN, SCI, SPI, and PWM-without CPU intervention. The IPLL clock generator provides frequency modulation for EMC reduction, while the API timer delivers trimmable wake-up intervals from 0.2 ms to ~13 s even in Full Stop mode.
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 S12 code reuse with enhanced addressing. |
| Flash Memory | 512 KB on-chip Flash with 64+8-bit ECC (1-bit correction, 2-bit detection); supports secure erase/program and automated algorithms. |
| RAM | 32 KB on-chip RAM; used for XGATE code/data, CPU stack, and real-time buffers without external memory dependency. |
| Operating Voltage | 3.3 V ±5% / +10% to 5.0 V +10%; separate VREG and I/O supplies enable optimized EMC filtering and robust noise immunity. |
| Temperature Range | -40°C to 125°C ambient; qualified for under-hood automotive applications including body control units and gateways. |
| Bus Frequency | 50 MHz maximum CPU bus frequency; enables deterministic real-time response for time-critical CAN message handling and PWM generation. |
| XGATE Performance | 100 MIPS RISC co-processor; handles full CAN protocol stack offload, LIN master/slave tasks, and data movement without CPU wait states. |
| CAN Modules | 4 independent MSCAN modules (CAN0, CAN1, CAN2, CAN4); each supports CAN 2.0A/B, up to 1 Mbps, and FULL-CAN when paired with XGATE. |
Pinout & Package
S912XEQ512J3MAL is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch, case no 918-03), with non-multiplexed external bus interface support and up to 119 general-purpose I/O pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual-supply domains: VDD for internal regulator (3.3–5.0 V), VSS for digital I/O; enables independent EMC filtering per domain. |
| RESET | Active-low reset input | Asynchronous reset with power-on reset (POR), low-voltage detect (LVD), and illegal address recovery; initiates safe boot sequence. |
| MODB, MODA | Mode selection inputs | Configure boot source (internal Flash vs. external memory) and debug interface (BDM active/inactive) at power-up. |
| XTAL, EXTAL | Crystal oscillator connections | Support 4–16 MHz Pierce crystal; drives OSC_LCP module for stable clock generation with noise immunity and fast startup. |
| CAN0_TX, CAN0_RX | CAN0 differential transceiver interface | Direct connection to external CAN transceiver; supports high-speed (up to 1 Mbps), fault-tolerant communication on vehicle networks. |
| SCI0_TX, SCI0_RX | SCI0 serial interface | Full-duplex UART supporting LIN physical layer (NRZ/RZI), break detection, and wake-up on active edge for body network slave nodes. |
| PWM0–PWM7 | Pulse-width modulator outputs | 8-channel 8-bit or 4-channel 16-bit PWM; programmable period/duty cycle per channel with center/left-aligned modes and emergency shutdown. |
| ATD0[0–15] | Analog input channels | 16-channel multiplexed analog inputs for ATD0 converter; supports 8/10/12-bit resolution, 3 µs 10-bit conversion, and wake-up on threshold match. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute attributes and triggers non-maskable interrupt on violation-critical for ASIL-B software partitioning. |
| XGATE Co-processor | Programmable in C; handles CAN/LIN protocol stacks, SPI/SCI data movement, and logic operations at 100 MIPS-freeing CPU for application-layer tasks. |
| ECC-Protected Flash | 64 data bits + 8 syndrome bits per word; corrects single-bit errors and detects double-bit faults during read/write-ensuring functional safety compliance in automotive systems. |
| Enhanced ATD Converter | Two independent ATD modules (ATD0/ATD1); 16-channel multiplexer, 3 µs 10-bit conversion, internal oscillator for Stop-mode operation, and analog-compare wake-up. |
| MSCAN with FULL-CAN | 4 CAN modules with 5 receive buffers (FIFO), 3 prioritized transmit buffers, and XGATE-accelerated mailbox management-enabling >1000 msg/sec throughput in gateway applications. |
| API Timer | Trimmable ±10% accuracy; generates wake-up events from 0.2 ms to ~13 s in Full Stop mode-supporting low-power cyclic monitoring without external RTC. |
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 CAN/LIN communication, PWM-driven power drivers, and sensor ADC reads with real-time scheduling via RTI and PIT timers. Use Value: Integrated 4-CAN and 6-SCI interfaces eliminate external bridge ICs; XGATE offloads LIN protocol timing, reducing CPU load by >40% in multi-node polling scenarios. |
Use Scenario: Protocol translation between high-speed CAN FD backbone and low-speed LIN subnetworks in electric powertrain and ADAS domains. IC Role / Device Role / Timing Role: Real-time gateway controller routing messages between CAN0/CAN1 (chassis network) and SCI0/SCI1 (LIN cluster), using XGATE for zero-latency frame buffering. Use Value: FULL-CAN capability with 5 receive buffers per MSCAN enables concurrent handling of 20+ CAN IDs; API timer ensures deterministic 100-ms heartbeat supervision across all connected ECUs. |
| Roof Module Controller | Seat Control Unit |
|
Use Scenario: Sunroof, panoramic roof, and ambient lighting control with position feedback, obstacle detection, and RGB LED dimming. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating Hall-effect, potentiometer, and capacitive touch inputs via ATD0/ATD1; driving 8-channel PWM for motor control and LED current regulation. Use Value: Dual ATD converters allow simultaneous sampling of position and current sensors; 12-bit resolution enables <±0.5% motor position accuracy over temperature range. |
Use Scenario: Motorized seat adjustment with memory presets, heating/cooling, and occupancy detection in premium automotive seating systems. IC Role / Device Role / Timing Role: Safety-critical actuator controller executing closed-loop PID on ECT/PWM channels while monitoring seat track position, temperature, and pressure sensors via ATD0. Use Value: MPU-enforced memory isolation prevents firmware corruption during overcurrent events; ECC Flash ensures bootloader integrity after 100k+ power cycles in field deployment. |
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 |
|---|---|---|---|
| S912XEP100J3MAL | 1 MB Flash, 64 KB RAM, 5 CAN modules, 208-pin MAPBGA; higher I/O count (152 pins) and extended peripheral set. | Targeted at flagship body controllers with full CAN/LIN/FlexRay gateway requirements and larger code footprint. | Select when >512 KB Flash, >4 CAN channels, or >119 I/O pins are required; not pin-compatible due to 208-pin MAPBGA package. |
| S912XET256J3MAL | 256 KB Flash, 16 KB RAM, 3 CAN modules, 144-pin LQFP; reduced ATD channels (1×8ch), no XGATE execution from Flash. | Suitable for cost-sensitive entry-level body nodes (e.g., mirror control, wiper modules) with minimal CAN bandwidth needs. | Select for BOM cost optimization where 512 KB Flash and FULL-CAN offload are unnecessary; shares same 144-pin LQFP footprint and basic peripheral compatibility. |
Compared with S912XEQ512J3MAL, S912XEP100J3MAL offers greater memory and I/O scalability but requires PCB redesign, while S912XET256J3MAL provides identical package and pinout with reduced Flash, CAN count, and XGATE capability-making it a direct drop-in alternative only for less demanding applications.
Availability
S912XEQ512J3MAL is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, roof modules, and seat control units requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualification.
Supply support for S912XEQ512J3MAL 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 microcontrollers dating to Freescale's S12 family.
The S912XEQ512J3MAL belongs to the MC9S12XE family, designed specifically for automotive body electronics requiring functional safety (MPU/ECC), real-time determinism (XGATE), and multi-protocol networking (CAN/LIN/SCI) in harsh environments.
FAQ
What is the operating temperature range for S912XEQ512J3MAL?
S912XEQ512J3MAL is rated for -40°C to 125°C ambient operation, meeting AEC-Q100 Grade 0 requirements for under-hood automotive applications. This range is validated across all electrical specifications including Flash programming, CAN timing, and ATD conversion accuracy-ensuring reliable performance in engine bay and transmission control environments where thermal stress exceeds 105°C.
Does S912XEQ512J3MAL support CAN FD or only classical CAN?
S912XEQ512J3MAL supports only classical CAN 2.0A/B (up to 1 Mbps) via its four MSCAN modules; it does not implement CAN FD protocol features such as flexible data-rate or extended payload. The MSCAN modules are software-compatible with legacy S12 devices and rely on XGATE for FULL-CAN mailbox management-but lack the hardware enhancements required for FD arbitration and data phase switching.
How many CAN modules does S912XEQ512J3MAL include, and which ones are present?
S912XEQ512J3MAL includes four CAN modules: CAN0, CAN1, CAN2, and CAN4. This configuration is confirmed in Table 1 of the MC9S12XE Family Product Brief for the "9S12XEQ512" derivative in 144-LQFP packaging. CAN3 is omitted in this variant, distinguishing it from the 5-CAN S912XEP100 and enabling optimized peripheral allocation for body control use cases.
Is XGATE code execution supported directly from Flash memory on S912XEQ512J3MAL?
Yes, S912XEQ512J3MAL supports XGATE code execution directly from on-chip Flash memory-unlike the S912XEG128 variant (which restricts XGATE to RAM-only execution). This capability is enabled by the enhanced XGATE version in the S12XE family and allows persistent co-processor firmware storage without requiring RAM initialization at boot, improving system startup reliability and memory efficiency.
What debug interface does S912XEQ512J3MAL use, and is it compatible with standard tools?
S912XEQ512J3MAL uses the Background Debug Mode (BDM) single-wire interface, fully compatible with P&E Microcomputer Systems' USB-ML-12 and Cyclone programmers, as well as CodeWarrior Development Studio v10.x and later. The BDM module supports non-intrusive memory access, flash programming, and real-time breakpoint triggering-enabling full in-circuit debugging without JTAG header overhead.
S912XEQ512J3MAL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-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:
- 91
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 32K 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:
S912XEQ512J3MAL FAQ
1.How can I place an order for S912XEQ512J3MAL through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512J3MAL 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 S912XEQ512J3MAL reliable?
The price and inventory of S912XEQ512J3MAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512J3MAL is usually 5 days.
3.What payment methods are accepted for S912XEQ512J3MAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512J3MAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512J3MAL?
S912XEQ512J3MAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512J3MAL 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 S912XEQ512J3MAL?
For technical support, including S912XEQ512J3MAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512J3MAL requirements.
6.How does Aetrix verify that S912XEQ512J3MAL is sourced from the original manufacturer or authorized distributors?
All S912XEQ512J3MAL 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 S912XEQ512J3MAL meets industry standards.
7.What is the process for return or replacement of S912XEQ512J3MAL?
All S912XEQ512J3MAL units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512J3MAL, 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 S912XEQ512J3MAL part is unused and in its original packaging.
Return procedure for S912XEQ512J3MAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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