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NXP Semiconductors S9S12XS256J0VAER
- Part No.:
- S9S12XS256J0VAER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12XS256J0VAER.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,764
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Product details
Overview
S9S12XS256J0VAER from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based automotive-grade microcontroller featuring 256 KB on-chip flash memory, 12 KB RAM, and integrated CAN 2.0B controller. It operates at up to 40 MHz core frequency with 5V tolerant I/O, supports BDM debugging, and targets engine control units, body electronics, and chassis modules requiring ASIL-B functional safety alignment.
For engineers reviewing the S9S12XS256J0VAER datasheet, S9S12XS256J0VAER pinout, S9S12XS256J0VAER application, or S9S12XS256J0VAER equivalent, key selection criteria include its 80-pin LQFP package, 12-bit ADC with 16 channels, XGATE co-processor for offloading time-critical tasks, and hardware CRC module for firmware integrity verification.
Technical Context
The S9S12XS256J0VAER implements the S12X CPU12XV1 core with enhanced addressing modes and 16-bit data path, paired with an XGATE RISC co-processor that executes peripheral interrupt service routines independently of the main CPU. Its memory subsystem includes 256 KB flash with EEPROM emulation, 12 KB RAM, and configurable wait-state logic for external bus interfacing.
Peripheral integration includes dual CAN 2.0B controllers, 16-channel 12-bit ADC with flexible trigger sources, 8-channel PWM with center-aligned mode, and multiple serial interfaces (SCI, SPI, I²C). Power management supports stop, wait, and freeze modes with wake-up via CAN, timer, or external interrupt.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12X 16-bit CPU with XGATE RISC co-processor for deterministic peripheral handling |
| Flash Memory | 256 KB on-chip flash with EEPROM emulation and 100K write/erase cycles |
| RAM | 12 KB on-chip RAM with parity protection for safety-critical data storage |
| Max Core Frequency | 40 MHz - enables real-time control loop execution within ≤25 µs timing budget |
| ADC Resolution | 12-bit SAR ADC with 16 input channels and programmable sample-and-hold timing |
| CAN Interfaces | Dual independent CAN 2.0B controllers supporting bit rates up to 1 Mbps |
| I/O Pins | 64 general-purpose I/O pins with 5V tolerance, configurable pull-up/down and slew rate control |
| Operating Voltage | 4.5 V to 5.5 V - compatible with standard automotive battery supply rails |
Pinout & Package
Package: 80-pin LQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 5 V core and I/O supply; requires local 100 nF decoupling per VDD pin |
| VSS | Ground reference | Dedicated analog/digital ground pins; must be connected to low-impedance PCB plane |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts 5 V logic levels |
| PORTA[7:0] | General-purpose I/O port | 8-bit bidirectional port with programmable direction, pull-up, and reduced drive strength |
| CAN0_TX / CAN0_RX | CAN 2.0B differential interface | Direct connection to external CAN transceiver; supports high-speed (up to 1 Mbps) operation |
| AD0[15:0] | Analog input multiplexer | 16-channel analog input selection for 12-bit ADC; includes dedicated temperature sensor input |
| BKGD | Background Debug pin | Single-wire BDM interface for programming and real-time debugging without JTAG header |
Key Features
| Feature | Design Value |
|---|---|
| XGATE Co-processor | Offloads time-critical ISR execution (e.g., CAN message handling) from main CPU, reducing latency by up to 70% |
| Hardware CRC Module | Generates 16-bit or 32-bit CRC over flash or RAM blocks in single-cycle operation for firmware validation |
| Enhanced Security | On-chip security lock with flash protection zones and background debug disable after programming |
| Flexible Clock System | Configurable PLL, internal oscillator, and external crystal support with fail-safe clock monitor |
| ASIL-B Ready Peripherals | Dual CAN controllers, ADC with self-test, and RAM parity enable compliance with ISO 26262 requirements |
| Temperature Range | –40 °C to +125 °C ambient operating range - qualified for under-hood automotive deployment |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time fuel injection timing, spark advance calculation, and OBD-II diagnostics in gasoline engines. IC Role / Device Role / Timing Role: Primary controller executing closed-loop combustion control algorithms with sub-50 µs interrupt response. Use Value: Dual CAN interfaces enable simultaneous communication with powertrain and diagnostic networks; XGATE handles CAN TX/RX buffering without CPU intervention. | Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC in mid-tier vehicles. IC Role / Device Role / Timing Role: Main system controller coordinating multi-peripheral event handling and LIN gateway functions. Use Value: 64 GPIOs support direct drive of relays and LEDs; 12-bit ADC monitors battery voltage and cabin temperature with ±1 LSB accuracy. |
| Chassis Control Unit | Electric Power Steering (EPS) |
Use Scenario: Active suspension damping control and electronic stability program (ESP) coordination. IC Role / Device Role / Timing Role: Safety-relevant controller managing sensor fusion (wheel speed, yaw rate) and actuator commands. Use Value: Hardware CRC and RAM parity support ASIL-B fault detection; dual CAN ensures redundancy for critical bus communication. | Use Scenario: Torque assist computation and motor phase current regulation in brushless DC steering motors. IC Role / Device Role / Timing Role: Real-time motor control unit executing FOC algorithms with precise PWM timing. Use Value: 8-channel PWM with dead-time insertion and center-aligned mode enables efficient 3-phase inverter control; 40 MHz core sustains 20 kHz PWM carrier frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512 | 512 KB flash, 32 KB RAM, same S12X core but higher memory density and additional CAN channel | Targeted at complex powertrain ECUs requiring larger code footprint and extra CAN bus for calibration | Select when >256 KB flash is needed; pin-compatible but requires updated PCB layout for larger 112-pin MAPBGA package |
| S912ZVMC256F0MLFR | Z-series 16-bit core, 256 KB flash, integrated LINPHY, lower power consumption (1.2 mA standby) | Optimized for body electronics with LIN network dominance and extended sleep mode requirements | Prefer for new designs prioritizing ultra-low-power operation and LIN integration; not pin-compatible due to 64-pin QFP package |
Compared with MC9S12XDP512 and S912ZVMC256F0MLFR, the S9S12XS256J0VAER delivers optimal balance of flash size, CAN bandwidth, and thermal robustness for cost-sensitive automotive control nodes where 256 KB suffices and 80-pin LQFP simplifies board assembly.
Availability
S9S12XS256J0VAER is available at Aetrix Electronics and suitable for engine control units, body control modules, and chassis control systems requiring stable component supply across automotive production lifecycles.
Supply support for S9S12XS256J0VAER 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.
The S12XS family was designed specifically for automotive body and chassis control applications demanding high reliability, functional safety features, and long-term supply stability in harsh environments.
FAQ
What is the maximum operating frequency of the S9S12XS256J0VAER?
The S9S12XS256J0VAER supports a maximum core frequency of 40 MHz, achieved via internal PLL multiplication of the external crystal or oscillator input. This frequency enables deterministic execution of real-time control loops with cycle-accurate timing, and is validated across the full –40 °C to +125 °C temperature range specified for the S9S12XS256J0VAER.
Does the S9S12XS256J0VAER support CAN FD?
No, the S9S12XS256J0VAER integrates two Freescale Scalable CAN (MSCAN) modules compliant with ISO 11898-1:2003 (CAN 2.0B), supporting only classic CAN protocol with up to 1 Mbps bit rate. It does not implement CAN FD framing, arbitration, or data phase enhancements. For CAN FD requirements, consider NXP's S32K series microcontrollers instead of the S9S12XS256J0VAER.
What debugging interface does the S9S12XS256J0VAER use?
The S9S12XS256J0VAER uses the Background Debug Mode (BDM) interface via the BKGD pin, supporting single-wire serial communication for flash programming, register inspection, and breakpoint-based debugging. It does not include JTAG or SWD interfaces. The BDM protocol is fully supported by P&E Micro and SEGGER tools compatible with the S9S12XS256J0VAER.
Is the S9S12XS256J0VAER qualified for automotive applications?
Yes, the S9S12XS256J0VAER is AEC-Q100 Grade 2 qualified (–40 °C to +105 °C ambient) and widely deployed in production automotive systems including engine control, body electronics, and chassis modules. Its design includes ECC-capable RAM, flash error correction, and hardware CRC - features aligned with ISO 26262 ASIL-B requirements for the S9S12XS256J0VAER.
What is the purpose of the XGATE module in the S9S12XS256J0VAER?
The XGATE module in the S9S12XS256J0VAER is a 16-bit RISC co-processor that handles peripheral interrupts autonomously, freeing the main S12X CPU for application tasks. It executes optimized microcode for CAN message buffering, ADC conversions, and PWM updates - reducing main CPU load by up to 40% and enabling deterministic response times critical for the S9S12XS256J0VAER's automotive control functions.
S9S12XS256J0VAER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 40MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS256J0VAER FAQ
1.How can I place an order for S9S12XS256J0VAER through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0VAER 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 S9S12XS256J0VAER reliable?
The price and inventory of S9S12XS256J0VAER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0VAER is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0VAER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0VAER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0VAER?
S9S12XS256J0VAER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0VAER 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 S9S12XS256J0VAER?
For technical support, including S9S12XS256J0VAER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0VAER requirements.
6.How does Aetrix verify that S9S12XS256J0VAER is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0VAER 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 S9S12XS256J0VAER meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0VAER?
All S9S12XS256J0VAER units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0VAER, 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 S9S12XS256J0VAER part is unused and in its original packaging.
Return procedure for S9S12XS256J0VAER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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