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NXP Semiconductors S912XEQ512BCAA
- Part No.:
- S912XEQ512BCAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XEQ512BCAA.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
S912XEQ512BCAA from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 512KB on-chip Flash with ECC, 32KB 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.
For engineers reviewing the S912XEQ512BCAA datasheet, S912XEQ512BCAA pinout, S912XEQ512BCAA application, or S912XEQ512BCAA equivalent, key selection criteria include its 144-pin LQFP package, dual ATD converters (8ch/4ch), 6 MSCAN modules, XGATE coprocessor running at 100 MIPS, and Memory Protection Unit for ASIL-B–capable system integrity.
Technical Context
The S912XEQ512BCAA implements a 16-bit CPU12X core with full MC9S12 instruction set compatibility (excluding five removed fuzzy instructions) and supports 50 MHz bus frequency. Its XGATE co-processor operates at 100 MHz, handles full CAN/LIN offload, and services all peripherals without CPU intervention.
It integrates ECC-enabled Flash (1-bit correction / 2-bit detection), MPU with eight configurable address regions (8-byte granularity), and dual ATD converters with 3 µs 10-bit conversion time. The device supports non-multiplexed external bus interface only in 144-pin LQFP and 208-pin MAPBGA packages - confirmed for this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, compatible with MC9S12 ISA (no MEM/WAV/REV instructions), enabling legacy code reuse. |
| Flash Memory | 512 KB Flash with ECC: enables single-bit fault correction and double-bit fault detection for safety-critical automotive firmware. |
| RAM | 32 KB on-chip RAM, sufficient for real-time task stacks, CAN message buffers, and XGATE data movement operations. |
| ADC | Two ATD modules: one 8-channel, one 4-channel; 10-bit resolution with 3 µs conversion time for sensor monitoring in body control. |
| CAN Interfaces | 6 MSCAN modules (CAN0–CAN4 + CANx), supporting CAN 2.0A/B up to 1 Mbps, enabling multi-bus gateway routing. |
| XGATE Performance | 100 MIPS RISC co-processor, programmable in C, servicing all peripherals independently - eliminates CPU polling overhead. |
| Operating Temp | -40°C to 125°C ambient rating, qualified for under-hood automotive environments per AEC-Q100 Grade 0. |
| Supply Voltage | 3.3 V ±5% / 5.0 V +10% single supply; separate I/O and core regulator rails improve EMC robustness. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). Pinout validated per MC9S12XEQ512 Data Sheet Rev. 7 and Freescale S12XE Pin Assignment Tables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Dedicated 3.3V/5V rails for core, analog, and PLL domains - enable independent filtering and noise isolation. |
| VSS, VSSA, VSSPLL | Ground returns | Separate ground planes per domain reduce coupling between digital switching, analog sensing, and clock generation. |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered; initiates POR, COP timeout recovery, and illegal address reset sequences. |
| XTAL, EXTAL | Crystal oscillator terminals | Support 4–16 MHz Pierce crystal; internal transconductance optimized for fast, reliable startup in automotive temperature range. |
| PORTA[7:0] | General-purpose I/O port | 8-bit bidirectional port with configurable pull-up/down, hysteresis, and drive strength - used for LIN transceiver control and diagnostics. |
| CAN0_TX, CAN0_RX | CAN0 differential signal pair | Direct connection to external CAN transceiver; supports ISO 11898-2 physical layer with bus-off recovery and loopback self-test. |
| AD0[7:0] | Analog input channels | 8 dedicated analog inputs routed to first ATD module; support 10-bit conversions with internal oscillator for Stop-mode wake-up. |
| SCI0_TX, SCI0_RX | LIN master interface | SCI0 configured as LIN 2.0 master; XGATE handles frame generation, checksum, and slave response timing autonomously. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-execute/no-write attributes and triggers NMI on violation - foundational for ASIL-B software partitioning. |
| ECC on Flash & D-Flash | 64+8-bit ECC word format corrects single-bit errors and detects double-bit faults during read/write - meets ISO 26262 memory safety requirements. |
| XGATE Co-processor | 100 MIPS RISC engine executing C code; handles full CAN mailbox management, LIN scheduling, and SPI/SCI DMA - frees CPU for application logic. |
| Enhanced ATD Converter | Two independent modules (8ch + 4ch); 10-bit resolution, 3 µs conversion, internal oscillator for Stop-mode operation - enables low-power sensor polling. |
| MSCAN Modules | 6 CAN controllers (CAN0–CAN4 + CANx); each supports 32-bit ID filters, FIFO receive buffers, and hardware time-stamping - essential for multi-bus automotive gateways. |
| API Timer | Asynchronous Periodic Interrupt timer active in Full Stop mode; trimmable ±10%, 0.2 ms–13 s range - provides precise low-power wake-up without crystal dependency. |
Applications
| Body Control Module (BCM) | Central Gateway Controller |
|---|---|
Use Scenario: Centralized vehicle body electronics managing lighting, door locks, window lifts, and HVAC via LIN sub-nodes and CAN backbone. IC Role / Device Role / Timing Role: Main MCU executing body control logic, hosting XGATE-managed LIN masters and MSCAN interfaces to powertrain/chassis CAN buses. Use Value: 6 MSCAN modules enable concurrent communication across multiple CAN domains; MPU and ECC ensure functional safety compliance for ASIL-B subsystems. |
Use Scenario: In-vehicle network bridge translating messages between high-speed powertrain CAN, low-speed body CAN, and LIN clusters. IC Role / Device Role / Timing Role: Protocol translator and message router; XGATE handles CAN arbitration and LIN frame assembly while CPU manages routing tables and diagnostics. Use Value: Dual ATD modules monitor voltage/current sensors for power rail health; API timer enables deterministic wake-up for periodic gateway heartbeat signals. |
| Roof Module Controller | Seat Control Unit |
Use Scenario: Sunroof, panoramic roof, and ambient lighting control with motor drivers, position sensors, and touch interface. IC Role / Device Role / Timing Role: Real-time actuator controller using PWM outputs and ATD feedback; communicates status over LIN to BCM. Use Value: 8-channel ATD supports simultaneous sampling of potentiometer, thermistor, and current-sense inputs; 16-bit PWM with emergency shutdown ensures safe motor control. |
Use Scenario: Power seat adjustment with memory presets, heating/cooling, and occupancy detection via pressure sensors. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating analog seat position, temperature, and weight data; transmits via CAN to body domain controller. Use Value: 32 KB RAM accommodates EEPROM emulation for seat position profiles; MPU isolates safety-critical heating control from user-interface tasks. |
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; adds non-multiplexed external bus and 8-channel ATD vs. S912XEQ512BCAA's 4-channel second ATD. | Targeted at higher-complexity gateways requiring external memory expansion and more analog inputs. | Select when >512 KB Flash, external bus, or additional ATD channels are required - not pin-compatible due to 208-pin MAPBGA package. |
| SPC560P50L5 | 32-bit Power Architecture core, 512 KB Flash, 64 KB RAM, 3 CAN, 2 LIN; lacks XGATE but includes e200z0 core and integrated safety mechanisms (lockstep, BIST). | Designed for ASIL-B/C systems with certified safety libraries; targets next-gen body controllers where ISO 26262 certification is mandatory. | Choose for new designs requiring AUTOSAR OS support and ASIL-B certification - requires toolchain and software migration; not functionally interchangeable. |
Compared with MC9S12XEP100MAG and SPC560P50L5, the S912XEQ512BCAA offers optimal balance of proven 16-bit architecture, XGATE offload capability, and cost-effective 144-pin LQFP packaging for mid-tier automotive body electronics - without external bus or 32-bit complexity overhead.
Availability
S912XEQ512BCAA is available at Aetrix Electronics and suitable for automotive body control modules, central gateway controllers, roof modules, and seat control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S912XEQ512BCAA 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, IoT, and communication infrastructure solutions, with deep heritage in microcontroller innovation.
The S912XEQ512BCAA belongs to the S12XE family - designed specifically for automotive body electronics and gateway applications demanding enhanced system integrity, CAN/LIN integration, and functional safety features at 16-bit cost and power efficiency.
FAQ
What is the maximum bus frequency supported by the S912XEQ512BCAA?
The S912XEQ512BCAA supports a maximum CPU bus frequency of 50 MHz and an XGATE bus frequency of 100 MHz. This enables deterministic real-time execution for automotive body control tasks while maintaining compatibility with existing S12X peripheral timing models. The IPLL clock generator provides stable frequency multiplication without external components, and spread-spectrum modulation reduces EMC emissions.
Does the S912XEQ512BCAA include hardware error correction for Flash memory?
Yes, the S912XEQ512BCAA includes Error Correction Code (ECC) on both main Flash and D-Flash memory. Each 64-bit data word is protected by 8 syndrome bits, enabling automatic correction of single-bit errors and detection of double-bit faults during read operations - a critical feature for ASIL-B–compliant automotive firmware storage.
How many CAN interfaces does the S912XEQ512BCAA support, and what protocol versions are implemented?
The S912XEQ512BCAA supports six MSCAN modules (CAN0–CAN4 plus CANx), all compliant with CAN 2.0A and 2.0B protocols. Each module supports standard and extended identifiers, programmable bit rates up to 1 Mbps, and hardware time-stamping. When paired with XGATE, it achieves FULL-CAN capability with unlimited mailbox handling and autonomous message filtering.
What is the role of the XGATE co-processor in the S912XEQ512BCAA, and how is it programmed?
The XGATE co-processor in the S912XEQ512BCAA is a 100 MIPS RISC engine that executes C-language code independently of the CPU. It handles time-critical peripheral tasks including CAN mailbox management, LIN frame generation, SPI/SCI data movement, and ATD triggering - freeing the CPU for application logic. Development uses standard CodeWarrior toolchain with XGATE-specific compiler extensions and debug support.
Is the S912XEQ512BCAA qualified for automotive temperature ranges, and what grade does it meet?
Yes, the S912XEQ512BCAA is qualified for operation from -40°C to +125°C ambient temperature and meets AEC-Q100 Grade 0 requirements. This qualification covers thermal cycling, humidity testing, and ESD robustness - making it suitable for under-hood and interior automotive applications including body control modules and gateway controllers where high-temperature reliability is mandatory.
S912XEQ512BCAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- 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:
- 59
- 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 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512BCAA FAQ
1.How can I place an order for S912XEQ512BCAA through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512BCAA 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 S912XEQ512BCAA reliable?
The price and inventory of S912XEQ512BCAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512BCAA is usually 5 days.
3.What payment methods are accepted for S912XEQ512BCAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512BCAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512BCAA?
S912XEQ512BCAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512BCAA 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 S912XEQ512BCAA?
For technical support, including S912XEQ512BCAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512BCAA requirements.
6.How does Aetrix verify that S912XEQ512BCAA is sourced from the original manufacturer or authorized distributors?
All S912XEQ512BCAA 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 S912XEQ512BCAA meets industry standards.
7.What is the process for return or replacement of S912XEQ512BCAA?
All S912XEQ512BCAA units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512BCAA, 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 S912XEQ512BCAA part is unused and in its original packaging.
Return procedure for S912XEQ512BCAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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