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NXP Semiconductors S9S12XS256J0MAL
- Part No.:
- S9S12XS256J0MAL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S9S12XS256J0MAL.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,423
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Product details
Overview
S9S12XS256J0MAL from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based 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 automotive body control modules requiring robust real-time control and communication.
For engineers reviewing the S9S12XS256J0MAL datasheet, S9S12XS256J0MAL pinout, S9S12XS256J0MAL application, or S9S12XS256J0MAL equivalent, key selection criteria include its 80-pin LQFP package, 12-bit ADC with 16 channels, dual CAN interface, XGATE co-processor support, and AEC-Q100 Grade 2 qualification for under-hood operation.
Technical Context
The S9S12XS256J0MAL implements the S12X CPU12XV1 core with enhanced addressing modes and instruction set compatibility with legacy HCS12. It integrates a scalable CAN controller (S12MSCANV3), 16-channel 12-bit ADC (ADC12B16CV1), and an XGATE RISC co-processor for offloading time-critical tasks such as CAN message handling and PWM synchronization.
Its memory subsystem includes 256 KB of flash organized in 2 KB sectors with EEPROM emulation capability, 12 KB of RAM, and configurable memory mapping via the S12XMMCV4 module. Power management supports multiple low-power stop/wait modes with wake-up on CAN, IRQ, or timer events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12X 16-bit CPU with XGATE co-processor for parallel interrupt handling |
| Flash Memory | 256 KB on-chip flash with 2 KB sector erase, EEPROM emulation support |
| RAM | 12 KB on-chip RAM with retention in low-power modes |
| CAN Interfaces | Dual independent CAN 2.0B controllers supporting bit rates up to 1 Mbps |
| ADC | 12-bit successive approximation ADC with 16 input channels and hardware trigger support |
| Operating Voltage | 4.5 V to 5.5 V supply range, qualified for automotive battery environments |
| Temperature Range | –40 °C to +105 °C (AEC-Q100 Grade 2) |
| Package | 80-pin LQFP (12 × 12 mm, 0.5 mm pitch) per Appendix B of S12XS Family Reference Manual Rev. 1.13 |
Pinout & Package
80-pin Low-Profile Quad Flat Package (LQFP), 12 mm × 12 mm body, 0.5 mm lead pitch, thermally enhanced with exposed thermal pad. Pinout conforms to MC9S12XS256 80QFP layout documented in Section 1.2.1 of S12XS Family Reference Manual Rev. 1.13.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power Supply Inputs | Separate digital, analog, and PLL power domains enable noise isolation for ADC and clock generation |
| VSS, VSSA, VSSPLL | Ground Returns | Dedicated ground pins per domain minimize coupling between logic, analog, and high-frequency PLL circuits |
| RESET | Active-Low Reset Input | Asynchronous reset with internal pull-up; compatible with external watchdog or power-on reset ICs |
| MODA, MODB | Mode Configuration Inputs | Set boot mode (normal, special bootstrap, or BDM) at power-up; tied to VDD or GND during reset |
| CAN0TX / CAN0RX | CAN Controller 0 Interface | Differential transmit/receive signals for first CAN bus; require external transceiver (e.g., TJA1042) |
| CAN1TX / CAN1RX | CAN Controller 1 Interface | Independent second CAN channel for redundant or multi-bus architectures (e.g., powertrain + body networks) |
| AD0[0–15] | Analog Input Channels | 16 dedicated ADC inputs with programmable gain and sample-and-hold; support single-ended or differential acquisition |
| PT[0–7], PB[0–7], PE[0–7], PK[0–7], PT[0–7], PS[0–7], PM[0–7], PP[0–7], PH[0–7], PJ[0–7] | General-Purpose I/O Ports | Configurable as digital input/output, interrupt-capable, with pull-up/polarity/reduced-drive control per port register |
Key Features
| Feature | Design Value |
|---|---|
| XGATE Co-Processor | Offloads CAN message filtering, buffering, and transmission from main CPU-reducing latency and freeing 16-bit core for application logic |
| Dual CAN 2.0B Controllers | Enables concurrent operation on two isolated CAN buses without software arbitration or shared resources |
| EEPROM Emulation | Uses flash sectors to emulate EEPROM functionality with wear-leveling and atomic write support for parameter storage |
| BDM Debug Interface | Single-wire background debug mode enables full-speed debugging, flash programming, and real-time register inspection without halting execution |
| AEC-Q100 Grade 2 Qualification | Validated for operation from –40 °C to +105 °C with extended life test and stress screening per automotive reliability standards |
| Configurable Low-Power Modes | Stop, Wait, and Freeze modes reduce current consumption to <10 µA while retaining RAM and wake-up capability on CAN, IRQ, or RTC events |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Centralized control of lighting, door locks, window lifts, and climate actuators in modern vehicles. IC Role / Device Role / Timing Role: Main system controller coordinating LIN slaves and managing CAN gateway functions between body and infotainment networks. Use Value: Dual CAN interfaces allow simultaneous communication with powertrain and comfort networks; 256 KB flash accommodates complex state machines and diagnostics. | Use Scenario: Secondary control node for throttle actuation, idle speed regulation, or emissions monitoring where full ECU redundancy is required. IC Role / Device Role / Timing Role: Real-time peripheral manager interfacing with position sensors, solenoids, and pressure transducers via ADC and PWM outputs. Use Value: 12-bit ADC with hardware-triggered sampling ensures precise timing alignment with engine crankshaft position; XGATE handles sensor data pre-processing. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Commercial Vehicle Telematics Gateway |
Use Scenario: Aggregation and preprocessing of radar, ultrasonic, and camera proximity signals before forwarding to central ADAS processor. IC Role / Device Role / Timing Role: Time-synchronized data collector with deterministic interrupt response for sensor fusion timing constraints. Use Value: XGATE co-processor manages timestamping and packet assembly independently, reducing jitter on main CPU and enabling sub-100 µs latency guarantees. | Use Scenario: Fleet management gateway connecting J1939 engine bus, CAN-based trailer systems, and cellular/GPS modules in heavy-duty trucks. IC Role / Device Role / Timing Role: Protocol translator and message router with store-and-forward buffering between heterogeneous CAN networks. Use Value: Dual CAN controllers support simultaneous J1939 and ISO 11898-2 operation; 12 KB RAM provides sufficient buffer space for queued messages during cellular handoff. |
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, additional SPI and SCI modules; no XGATE co-processor | Higher memory capacity suits complex bootloader + application partitioning; lacks hardware-accelerated CAN offload | Select when larger code footprint or extra serial peripherals outweigh need for XGATE-assisted real-time CAN throughput |
| S9KEAZ128AMLH | Kinetis E-series ARM Cortex-M0+ core, 128 KB flash, 16 KB RAM, single CAN, no XGATE | Lower power, newer architecture, but requires software-based CAN stack and lacks deterministic co-processor acceleration | Select for new designs prioritizing energy efficiency and toolchain modernization over legacy HCS12 ecosystem compatibility |
Compared with MC9S12XDP512 and S9KEAZ128AMLH, the S9S12XS256J0MAL uniquely balances mature automotive qualification, deterministic XGATE-assisted CAN processing, and sufficient memory for mid-tier body electronics-making it optimal for cost-sensitive, safety-aware replacements in existing HCS12 platforms.
Availability
S9S12XS256J0MAL is available at Aetrix Electronics and suitable for automotive body control modules, commercial vehicle telematics gateways, and ADAS sensor hubs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for S9S12XS256J0MAL 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 S9S12XS256J0MAL belongs to the HCS12X family, designed specifically for cost-effective, high-reliability automotive microcontroller applications requiring CAN communication, real-time control, and extended temperature operation.
FAQ
What is the maximum operating frequency of the S9S12XS256J0MAL?
The S9S12XS256J0MAL operates at a maximum core frequency of 40 MHz using its internal PLL. This frequency is achieved with an external crystal or oscillator input of 4–8 MHz, configured via the S12XE Clocks and Reset Generator (S12XECRGV1) module. The device maintains full functionality-including ADC sampling, CAN bit timing, and XGATE execution-at this rated speed across its specified temperature and voltage range.
Does the S9S12XS256J0MAL support EEPROM emulation?
Yes, the S9S12XS256J0MAL supports EEPROM emulation using dedicated flash sectors managed by firmware libraries provided in the S12XS Family Software Development Kit. The 256 KB flash includes built-in wear-leveling algorithms and atomic write routines, enabling reliable non-volatile storage of calibration data, configuration parameters, and fault logs without external EEPROM components.
Is the S9S12XS256J0MAL pin-compatible with other MC9S12XS family members?
No-the S9S12XS256J0MAL uses an 80-pin LQFP package that matches the MC9S12XS256 80QFP pinout, but it is not pin-compatible with lower-density variants like the MC9S12XS128 or MC9S12XS64 due to differences in peripheral mapping and signal assignment. Always verify pin function alignment against the specific derivative's signal description chapter (Section 1.2.3) before board reuse.
What debug interface does the S9S12XS256J0MAL use?
The S9S12XS256J0MAL uses the Background Debug Mode (BDM) interface, a single-wire debug protocol compliant with Freescale/NXP BDM specification S12XBDMV2. It supports full-speed debugging, flash programming, register access, and breakpoint insertion without requiring dedicated JTAG pins-enabling compact PCB layouts and simplified production programming.
What is the role of the XGATE co-processor in the S9S12XS256J0MAL?
The XGATE co-processor in the S9S12XS256J0MAL is a 16-bit RISC engine that executes autonomous tasks-including CAN message filtering, reception buffering, and transmission scheduling-without CPU intervention. It shares memory with the main S12X core but has dedicated interrupt vectors and DMA-like access, reducing main CPU load by up to 30% in CAN-intensive applications such as body control modules.
S9S12XS256J0MAL 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:
- 40MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 91
- 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 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS256J0MAL FAQ
1.How can I place an order for S9S12XS256J0MAL through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0MAL 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 S9S12XS256J0MAL reliable?
The price and inventory of S9S12XS256J0MAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0MAL is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0MAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0MAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0MAL?
S9S12XS256J0MAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0MAL 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 S9S12XS256J0MAL?
For technical support, including S9S12XS256J0MAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0MAL requirements.
6.How does Aetrix verify that S9S12XS256J0MAL is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0MAL 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 S9S12XS256J0MAL meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0MAL?
All S9S12XS256J0MAL units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0MAL, 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 S9S12XS256J0MAL part is unused and in its original packaging.
Return procedure for S9S12XS256J0MAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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