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NXP Semiconductors S912XEQ512J3CAAR
- Part No.:
- S912XEQ512J3CAAR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XEQ512J3CAAR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
S912XEQ512J3CAAR from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 512 KB on-chip Flash memory with ECC, 32 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 S912XEQ512J3CAAR datasheet, S912XEQ512J3CAAR pinout, S912XEQ512J3CAAR application, or S912XEQ512J3CAAR equivalent, key selection criteria include its 50 MHz bus frequency, dual ATD converters (8/10/12-bit), 4-channel PWM, 6 MSCAN modules, and 144-pin LQFP package with non-multiplexed external bus support.
Technical Context
The S912XEQ512J3CAAR implements a 16-bit CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), enhanced indexed addressing, and large data segment access independent of PPAGE. Its XGATE co-processor runs at 100 MIPS, handles all peripheral interrupts independently, and enables FULL-CAN operation when paired with MSCAN.
System integrity is enforced via a Memory Protection Unit (MPU) supporting eight 8-byte-granularity address regions with no-write/no-execute attributes and non-maskable violation interrupts. Flash memory includes 64-bit data + 8-bit ECC syndrome for single-bit correction and double-bit detection, while the IPLL clock generator supports spread-spectrum modulation to reduce EMC emissions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 instruction set; excludes MEM/WAV/WAVR/REV/REVW instructions. |
| Bus Frequency | 50 MHz maximum CPU bus frequency; enables deterministic real-time response in automotive timing-critical tasks. |
| Flash Memory | 512 KB on-chip Flash with ECC (64+8 bits); supports single-bit fault correction and double-bit fault detection per word. |
| RAM | 32 KB on-chip RAM; used for XGATE code/data execution and CPU stack operations without wait states. |
| MSCAN Modules | 6 independent MSCAN modules; each compliant with CAN 2.0A/B, supports up to 1 Mbps bit rate and FULL-CAN with XGATE offload. |
| ATD Converter | Dual ATD modules; each supports 8/10/12-bit resolution, 16-channel multiplexer, and 3 µs 10-bit conversion time. |
| PWM Channels | 4 × 16-bit or 8 × 8-bit PWM channels; configurable center/left-aligned outputs with programmable period/duty cycle per channel. |
| Operating Temp | -40°C to 125°C ambient range; qualified for under-hood automotive applications requiring extended thermal robustness. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), case number 918-03. Includes non-multiplexed external bus interface for glue-less connection to asynchronous SRAM/Flash.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs | Separate analog (VDDA), core (VDD), and XGATE (VDDX) supplies enable optimized EMC filtering and noise isolation. |
| RESET | Active-low reset input | Accepts external reset assertion; triggers power-on reset (POR), low-voltage detect (LVD), and COP watchdog recovery sequences. |
| XTAL, EXTAL | Crystal oscillator terminals | Supports 4–16 MHz Pierce crystal; internal transconductance optimized for reliable start-up across temperature and voltage. |
| CS0–CS3 | Chip select outputs | Configureable to terminate external bus transactions on EWAIT deassertion or wait-state timeout; enables direct interface to legacy peripherals. |
| PORTA–PORTP | General-purpose I/O ports | Up to 119 GPIO pins total; ports J, H, P support edge-sensitive wake-up from STOP/WAIT modes. |
| CAN0TX/CAN0RX | CAN0 differential transceiver I/O | Direct connection to external CAN transceiver; supports dominant/recessive bit transmission and reception per ISO 11898-1. |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Programmable in C; handles MSCAN, LIN, SPI, and SCI interrupts autonomously-freeing CPU for higher-layer protocol stacks. |
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute policies to prevent unauthorized code injection or data corruption. |
| ECC-enabled Flash | 64-bit data + 8-bit ECC syndrome per word; ensures functional safety compliance by correcting single-bit errors during runtime reads. |
| IPLL clock generator | Internally filtered PLL with spread-spectrum option; eliminates need for external loop filter components and reduces radiated emissions by >10 dB. |
| Enhanced ATD | Dual converters with internal oscillator support; enables analog sensing and wake-up from STOP mode without external clock dependency. |
| Background Debug (BDM) | Single-wire interface supporting non-intrusive memory access, flash programming, and security lock/unlock during development and field updates. |
Applications
| Body Control Module | 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 power MOSFETs via PWM, reading analog sensors (temperature, position), and managing LIN slave nodes. Use Value: Integrated 4-channel PWM and dual ATD eliminate external driver ICs and ADCs; 6 MSCAN modules route messages between chassis, powertrain, and infotainment networks. |
Use Scenario: Protocol translation and message routing between high-speed CAN FD domains (e.g., ADAS) and low-speed LIN subsystems (e.g., seat/mirror controls). IC Role / Device Role / Timing Role: Real-time bridge MCU handling CAN-to-LIN gateway functions with minimal CPU overhead using XGATE-managed MSCAN and LIN-capable SCI modules. Use Value: XGATE offloads full CAN mailbox management and LIN frame generation, enabling sub-100 µs latency for critical diagnostic and safety messages. |
| Chassis Domain Controller | Smart Junction Box |
Use Scenario: Consolidated electronic control unit for brake-by-wire assist, steering angle sensing, and suspension damping control in electric platforms. IC Role / Device Role / Timing Role: Safety-relevant MCU performing sensor fusion (ATD + SPI IMU), actuator PWM control, and CAN communication with redundant path validation. Use Value: MPU-enforced memory partitioning isolates safety-critical firmware from diagnostics code; ECC Flash ensures integrity of calibrated brake maps across 15-year vehicle lifecycle. |
Use Scenario: Power distribution hub integrating fuse monitoring, load switching, and battery voltage regulation in next-gen vehicle electrical architectures. IC Role / Device Role / Timing Role: High-I/O-count controller managing 24+ switched loads via external drivers, monitoring current sense ADCs, and reporting faults over CAN. Use Value: 119 GPIO pins with configurable drive strength and hysteresis support direct interface to Hall-effect current sensors and smart power switches without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XEP768J3MAA | 768 KB Flash, 48 KB RAM, 208-pin MAPBGA; adds third ATD module and 8-channel PWM. | Targeted at higher-complexity gateways requiring additional analog sensing and motor control capability. | Select when >512 KB Flash and expanded PWM/ATD resources are required; not pin-compatible due to MAPBGA packaging. |
| MC9S12XDP512CPV | Same 512 KB Flash but S12XD-family architecture; lacks MPU, ECC Flash, and XGATE enhancements. | Suitable for cost-sensitive legacy body modules where system integrity features are not mandated. | Choose only if existing S12XD toolchain and software investment must be preserved; no hardware-level safety features. |
Compared with S912XEQ512J3CAAR, the S912XEP768J3MAA offers greater memory and peripheral headroom but requires PCB redesign for MAPBGA layout, while the MC9S12XDP512CPV provides lower-cost migration from older S12X designs but omits ECC, MPU, and XGATE-limiting suitability for ASIL-B systems.
Availability
S912XEQ512J3CAAR is available at Aetrix Electronics and suitable for automotive body control modules, gateway controllers, chassis domain units, and smart junction boxes requiring stable component supply across long production lifecycles.
Supply support for S912XEQ512J3CAAR 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's S12 lineage.
The S912XEQ512J3CAAR belongs to the MC9S12XE family, designed specifically for automotive body electronics and gateway applications demanding enhanced system integrity, CAN/LIN protocol offload, and extended temperature reliability.
FAQ
What is the maximum operating frequency of the S912XEQ512J3CAAR CPU bus?
The S912XEQ512J3CAAR supports a maximum CPU bus frequency of 50 MHz. This allows deterministic execution of time-critical automotive tasks such as PWM generation, CAN message scheduling, and analog sampling within strict deadlines. The XGATE co-processor operates at up to 100 MHz, enabling high-throughput peripheral handling independent of the main CPU. Both frequencies are guaranteed across the full -40°C to 125°C operating range.
Does the S912XEQ512J3CAAR include error-correcting code (ECC) for its Flash memory?
Yes, the S912XEQ512J3CAAR integrates ECC protection on its 512 KB Flash memory using a 64-bit data + 8-bit syndrome format. This enables automatic correction of single-bit errors and detection of double-bit faults during read operations-critical for functional safety compliance in ASIL-B automotive systems. ECC is active by default and does not require software initialization to provide runtime protection.
How many CAN modules does the S912XEQ512J3CAAR support, and what protocol versions are implemented?
The S912XEQ512J3CAAR supports six independent MSCAN modules, each compliant with CAN 2.0A and CAN 2.0B protocols. All modules support standard and extended identifier formats, programmable bit rates up to 1 Mbps, and hardware-based acceptance filtering (2×32-bit, 4×16-bit, or 8×8-bit configurations). FULL-CAN capability-including unlimited mailbox handling-is achieved when MSCAN modules are managed by the XGATE co-processor.
What package type and pin count does the S912XEQ512J3CAAR use?
The S912XEQ512J3CAAR is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch), case number 918-03. This package includes a non-multiplexed external bus interface for seamless connection to external memory devices and supports up to 119 general-purpose I/O pins. It is mechanically and thermally qualified for automotive under-hood environments per AEC-Q100 Grade 1 requirements.
Is the S912XEQ512J3CAAR compatible with the older MC9S12XD family?
The S912XEQ512J3CAAR maintains a high level of software and peripheral compatibility with the MC9S12XD family, including identical CPU12X instruction set (excluding five deprecated fuzzy instructions) and shared register maps for core modules like TIM, ECT, and SCI. However, it introduces new features-including MPU, ECC Flash, and enhanced XGATE-that require updated initialization code and are not present in S12XD derivatives like the MC9S12XDP512CPV.
S912XEQ512J3CAAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- 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:
- 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:
S912XEQ512J3CAAR FAQ
1.How can I place an order for S912XEQ512J3CAAR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512J3CAAR 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 S912XEQ512J3CAAR reliable?
The price and inventory of S912XEQ512J3CAAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512J3CAAR is usually 5 days.
3.What payment methods are accepted for S912XEQ512J3CAAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512J3CAAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512J3CAAR?
S912XEQ512J3CAAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512J3CAAR 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 S912XEQ512J3CAAR?
For technical support, including S912XEQ512J3CAAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512J3CAAR requirements.
6.How does Aetrix verify that S912XEQ512J3CAAR is sourced from the original manufacturer or authorized distributors?
All S912XEQ512J3CAAR 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 S912XEQ512J3CAAR meets industry standards.
7.What is the process for return or replacement of S912XEQ512J3CAAR?
All S912XEQ512J3CAAR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512J3CAAR, 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 S912XEQ512J3CAAR part is unused and in its original packaging.
Return procedure for S912XEQ512J3CAAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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