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NXP Semiconductors S9S12XS256J0VAE
- Part No.:
- S9S12XS256J0VAE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12XS256J0VAE.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,398
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Product details
Overview
S9S12XS256J0VAE 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 capable deterministic real-time performance.
For engineers reviewing the S9S12XS256J0VAE datasheet, S9S12XS256J0VAE pinout, S9S12XS256J0VAE application, or S9S12XS256J0VAE equivalent, key selection criteria include its 80-pin LQFP package, 12-bit ADC with 16 channels, dual CAN interface, XGATE co-processor for offloading interrupt handling, and qualification per AEC-Q100 Grade 2 (−40°C to +105°C).
Technical Context
The S9S12XS256J0VAE implements the S12X CPU core with enhanced instruction set, 24-bit addressing, and hardware multiply/divide. Its memory subsystem includes 256 KB flash with EEPROM emulation, 12 KB RAM, and configurable wait states supporting zero-wait-state operation at ≤20 MHz bus frequency.
Peripheral integration includes two independent CAN 2.0B controllers, 16-channel 12-bit ADC with flexible trigger sources, 8-channel PWM with center-aligned mode, and a full-featured serial communication suite (SCI, SPI, I²C). The XGATE RISC co-processor handles time-critical interrupts independently of the main CPU.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12X 16-bit CPU with 24-bit address bus and XGATE co-processor for parallel interrupt processing |
| Flash Memory | 256 KB on-chip flash with EEPROM emulation, sector erase, and 100K write/erase cycles |
| RAM | 12 KB on-chip RAM with error detection and correction (EDC) |
| Clock Speed | Up to 40 MHz core frequency; 20 MHz bus clock with programmable PLL and internal voltage regulator |
| ADC | 12-bit successive approximation ADC with 16 input channels, 8 µs conversion time, and hardware-triggered sequencing |
| CAN Interfaces | Dual independent CAN 2.0B controllers supporting 1 Mbit/s, message buffering, and automatic retransmission |
| Operating Temperature | AEC-Q100 Grade 2 qualified: −40°C to +105°C ambient, suitable for under-hood automotive applications |
| I/O Voltage Tolerance | 5V-tolerant digital I/O pins enable direct interfacing with legacy 5V sensors and actuators without level shifters |
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, VDDA, VDDPLL | Power supply inputs | Separate analog (VDDA), core (VDD), and PLL (VDDPLL) rails enable noise isolation for ADC and clock circuits |
| VSS, VSSA | Ground returns | Dedicated analog ground (VSSA) minimizes coupling noise into sensitive analog peripherals |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; supports external watchdog or power-on reset circuitry |
| XTAL, EXTAL | Crystal oscillator connections | Supports 4–32 MHz Pierce oscillator configuration; internal load capacitors reduce external component count |
| CAN0_TX, CAN0_RX | CAN 0 differential transceiver interface | Direct connection to external CAN transceiver; compatible with ISO 11898-2 physical layer |
| CAN1_TX, CAN1_RX | CAN 1 differential transceiver interface | Independent second CAN channel enables gateway or multi-bus architectures without software arbitration |
| AD0[0–15] | Analog input channels | 16 dedicated ADC input pins with programmable gain and sample-and-hold timing control |
| PT0–PT7, PB0–PB7, etc. | General-purpose I/O ports | Multi-function pins supporting GPIO, PWM output, SCI UART, SPI, and timer capture/compare with configurable slew rate and pull-up |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Independent 16-bit RISC engine offloads up to 90% of interrupt service overhead, freeing main CPU for application logic |
| Dual CAN 2.0B controllers | Hardware message filtering, 64-message object buffers, and time-triggered communication support for distributed vehicle networks |
| BDM debug interface | Single-wire background debug mode enables non-intrusive real-time debugging, flash programming, and memory inspection without halting CPU |
| On-chip voltage regulator | Integrated 3.3 V regulator powers internal logic; accepts 5 V ±10% input, eliminating need for external LDO in many designs |
| AEC-Q100 Grade 2 qualification | Validated for automotive under-hood environments including thermal cycling, humidity, and ESD robustness per ISO 10605 |
| EEPROM emulation | Flash sectors configured as wear-leveling EEPROM with atomic write/erase and data retention >10 years at 105°C |
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/diesel powertrains. IC Role / Device Role / Timing Role: Primary controller executing closed-loop combustion algorithms with sub-microsecond interrupt latency via XGATE. Use Value: Dual CAN interfaces enable simultaneous communication with powertrain CAN and diagnostic CAN buses without software multiplexing. | Use Scenario: Centralized management of lighting, door locks, window lifts, and climate control in modern vehicle cabins. IC Role / Device Role / Timing Role: System coordinator aggregating LIN slave node data and routing commands over CAN to actuator drivers. Use Value: 5V-tolerant I/O directly interfaces with legacy 5V sensors and relays, reducing BOM cost and board space. |
| Chassis Control Unit | Advanced Driver Assistance Systems (ADAS) Gateway |
Use Scenario: Electronic stability control (ESC), anti-lock braking (ABS), and traction control using wheel speed sensor fusion. IC Role / Device Role / Timing Role: Deterministic real-time processor running safety-critical control loops with ASIL-B compliance verified by hardware CRC and memory protection. Use Value: On-chip 12-bit ADC with hardware-triggered sampling ensures precise synchronization with wheel encoder signals. | Use Scenario: Aggregating radar, camera, and ultrasonic sensor data across multiple CAN and LIN domains before forwarding to central ADAS ECU. IC Role / Device Role / Timing Role: Protocol translation hub with dual CAN controllers, SPI for sensor interfaces, and SCI for debug/logging. Use Value: XGATE co-processor handles high-frequency CAN message reception and timestamping while main CPU manages routing logic. |
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, identical peripheral set but higher memory density and extended temperature range (−40°C to +125°C) | Targeted at next-generation ECUs requiring larger code footprint and extended thermal margin | Select when future-proofing for software updates or adding OTA functionality |
| S912ZVMC25F0MLFR | 16-bit S12Z core, 256 KB flash, 20 KB RAM, integrated LINPHY, and enhanced ASIL-B safety features (FMEDA, lockstep cores) | Designed for functional safety-critical chassis and powertrain applications requiring ISO 26262 ASIL-B certification | Choose when formal safety documentation, diagnostic coverage, and hardware redundancy are mandatory |
Compared with MC9S12XDP512 and S912ZVMC25F0MLFR, the S9S12XS256J0VAE delivers optimal balance of proven automotive reliability, deterministic real-time performance via XGATE, and cost-effective 256 KB flash capacity - making it ideal for volume production of mid-tier automotive ECUs where memory headroom and extended temperature are not primary constraints.
Availability
S9S12XS256J0VAE is available at Aetrix Electronics and suitable for engine control units, body control modules, and chassis control systems requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 qualified assurance.
Supply support for S9S12XS256J0VAE 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 applications.
The S12XS family was engineered specifically for cost-sensitive, high-reliability automotive applications demanding deterministic real-time control, CAN networking, and AEC-Q100 qualification - with emphasis on engine management, body electronics, and chassis systems.
FAQ
What is the maximum operating frequency of the S9S12XS256J0VAE?
The S9S12XS256J0VAE supports a maximum core frequency of 40 MHz, with a corresponding bus clock of up to 20 MHz. This is achieved using the on-chip PLL with programmable multiplication factor and internal voltage regulator. The S9S12XS256J0VAE maintains full functionality across its specified temperature range (−40°C to +105°C) at this speed, validated per AEC-Q100 Grade 2 requirements.
Does the S9S12XS256J0VAE support in-circuit debugging?
Yes, the S9S12XS256J0VAE integrates a Background Debug Module (BDM) compliant with Freescale/NXP's single-wire debug standard. This allows full read/write memory access, register inspection, breakpoint setting, and flash programming without halting real-time operation. The S9S12XS256J0VAE requires only the BKGD pin and ground for connection to standard BDM debug probes such as the P&E Multilink or SEGGER J-Link with BDM firmware.
How many CAN interfaces does the S9S12XS256J0VAE include?
The S9S12XS256J0VAE includes two independent CAN 2.0B controllers, each supporting bit rates up to 1 Mbit/s, message objects with hardware acceptance filtering, and automatic retransmission. These controllers operate concurrently and can be assigned to separate CAN buses - for example, one for powertrain communication and another for body network traffic - without CPU intervention beyond initial configuration.
Is the S9S12XS256J0VAE qualified for automotive use?
Yes, the S9S12XS256J0VAE is fully AEC-Q100 qualified to Grade 2 (−40°C to +105°C), including stress testing for thermal cycling, humidity, ESD (±8 kV contact, ±15 kV air), and latch-up immunity. It also meets automotive reliability standards for solderability, mechanical shock, and vibration. This qualification makes the S9S12XS256J0VAE suitable for under-hood and cabin-mounted automotive electronic control units.
What development tools are supported for the S9S12XS256J0VAE?
The S9S12XS256J0VAE is supported by NXP's S32DS IDE (with legacy CodeWarrior compatibility), P&E Micro's PROG12Z and Cyclone programmers, and third-party tools including IAR Embedded Workbench and Keil µVision with appropriate device plugins. Evaluation boards such as the DEMO9S12XDT512 and S12XEP100 are compatible, and reference designs for CAN gateways and motor control are available in NXP's application library.
S9S12XS256J0VAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- HCS12X
- Packaging:
- Tray
- 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:
S9S12XS256J0VAE FAQ
1.How can I place an order for S9S12XS256J0VAE through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0VAE 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 S9S12XS256J0VAE reliable?
The price and inventory of S9S12XS256J0VAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0VAE is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0VAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0VAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0VAE?
S9S12XS256J0VAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0VAE 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 S9S12XS256J0VAE?
For technical support, including S9S12XS256J0VAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0VAE requirements.
6.How does Aetrix verify that S9S12XS256J0VAE is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0VAE 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 S9S12XS256J0VAE meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0VAE?
All S9S12XS256J0VAE units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0VAE, 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 S9S12XS256J0VAE part is unused and in its original packaging.
Return procedure for S9S12XS256J0VAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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