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NXP Semiconductors S9S12XS256J0CALR
- Part No.:
- S9S12XS256J0CALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S9S12XS256J0CALR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
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Product details
Overview
S9S12XS256J0CALR 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 and body electronics requiring ASIL-B capable timing and fault handling.
For engineers reviewing the S9S12XS256J0CALR datasheet, S9S12XS256J0CALR pinout, S9S12XS256J0CALR application, or S9S12XS256J0CALR equivalent, key selection criteria include its 80-pin LQFP package, 12-bit ADC with 16 channels, dual CAN interface, XGATE co-processor for interrupt offloading, and EEPROM emulation via flash.
Technical Context
The S9S12XS256J0CALR implements the S12X CPU12XV1 core with 16-bit data path, 24-bit addressing, and enhanced instruction set including multiply/divide and bit manipulation. Its memory subsystem includes 256 KB flash with 2K block erase, 12 KB RAM, and 4 KB EEPROM-emulated data flash.
Peripheral integration includes two MSCAN modules (CAN 2.0B compliant), 16-channel 12-bit ADC with configurable sample time, 8-channel PWM with center-aligned mode, SPI/I²C/SCI interfaces, and a 16-bit timer module with input capture/output compare. Clock generation supports crystal, ceramic resonator, or external clock inputs with PLL multiplication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12X 16-bit CPU with XGATE co-processor for parallel interrupt handling and reduced main CPU load |
| Flash Memory | 256 KB on-chip flash with 2K sector erase, 100K write/erase cycles, and EEPROM emulation capability |
| RAM | 12 KB on-chip SRAM for real-time variable storage and stack operations |
| CAN Interfaces | Dual MSCAN modules supporting CAN 2.0B protocol, 1 Mbit/s data rate, and message buffering with priority arbitration |
| ADC | 12-bit successive approximation ADC with 16 input channels, programmable conversion time, and hardware-triggered sampling |
| PWM | 8-channel 16-bit PWM generator with center-aligned mode, dead-time insertion, and fault protection input |
| Package | 80-pin LQFP (12 × 12 mm, 0.5 mm pitch) with exposed thermal pad for automotive thermal management |
| Operating Voltage | 4.5 V to 5.5 V supply range, qualified for automotive battery environments with load dump tolerance |
Pinout & Package
80-pin Low-Profile Quad Flat Package (LQFP) with 0.5 mm pitch, JEDEC MS-026AC standard footprint, and exposed thermal pad for enhanced heat dissipation in under-hood applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power Supply Inputs | Separate analog, digital, and PLL power domains enable noise isolation and stable high-frequency operation |
| VSS, VSSA, VSSPLL | Ground Returns | Dedicated analog/digital/PLL ground pins minimize coupling and support mixed-signal integrity |
| XTAL, EXTAL | Crystal Oscillator Interface | Supports 4–32 MHz crystal or ceramic resonator for primary system clock with internal load capacitors |
| CAN0_TX, CAN0_RX | CAN Controller Channel 0 | Differential transmit/receive signals compliant with ISO 11898-2; require external transceiver for bus connection |
| CAN1_TX, CAN1_RX | CAN Controller Channel 1 | Independent second CAN channel for gateway or redundancy applications without software overhead |
| AD0[0–15] | Analog Input Channels | 16 dedicated ADC input pins with programmable gain and sample-and-hold control |
| PT0–PT7 | PWM Output Terminals | Eight high-current PWM outputs with configurable polarity, dead-time, and fault shutdown |
| BKGD | Background Debug Pin | Single-wire BDM interface for non-intrusive debugging, flash programming, and real-time trace |
Key Features
| Feature | Design Value |
|---|---|
| XGATE Co-Processor | Offloads time-critical CAN, ADC, and PWM interrupt handling from main CPU, enabling deterministic response under heavy ISR load |
| EEPROM Emulation | Uses flash sectors to emulate EEPROM with wear-leveling and atomic write support for parameter storage without external memory |
| Dual CAN 2.0B Controllers | Enables vehicle network segmentation-e.g., powertrain CAN + body CAN-with independent message buffers and filtering |
| Hardware CRC Module | Accelerates checksum calculation for flash validation and communication frame integrity checking in safety-critical routines |
| Temperature Sensor Interface | Integrated bandgap reference and ADC channel for on-die temperature monitoring used in thermal derating and diagnostics |
| Stop Mode Current | ≤ 35 µA typical current draw in stop mode with RTC and selected wake-up sources enabled for low-power vehicle keep-alive functions |
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 engine management MCU executing closed-loop control algorithms at 10 ms intervals with sub-microsecond jitter tolerance. Use Value: Dual CAN interfaces allow simultaneous communication with transmission ECU and instrument cluster; XGATE handles CAN message queuing without CPU intervention. | Use Scenario: Centralized control of lighting, door locks, window lifts, and HVAC in mid-tier passenger vehicles. IC Role / Device Role / Timing Role: System coordinator managing LIN slave nodes and CAN gateway functions with deterministic I/O scanning. Use Value: 16-channel ADC monitors potentiometer-based HVAC controls; 8-channel PWM drives LED dimming and motor speed regulation. |
| Transmission Control Unit (TCU) | Electric Power Steering (EPS) |
Use Scenario: Gear shift logic, clutch pressure modulation, and torque converter lockup control in automatic transmissions. IC Role / Device Role / Timing Role: Safety-relevant controller implementing ASIL-B compliant software with hardware-assisted CRC and memory protection. Use Value: Hardware CRC module validates flash integrity before each boot; dual CAN ensures redundant communication with engine ECU and brake controller. | Use Scenario: Torque assist calculation, motor phase current sensing, and fault detection in 12V EPS systems. IC Role / Device Role / Timing Role: Real-time motor control MCU with synchronized ADC sampling and PWM update at 20 kHz switching frequency. Use Value: 12-bit ADC with hardware trigger achieves ±1 LSB accuracy at 20 kSPS; PWM dead-time insertion prevents shoot-through in 3-phase inverter drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MALR | 1 MB flash, 64 KB RAM, enhanced CAN FD support, higher core clock (50 MHz), larger package (112-pin MAPBGA) | Targeted at next-gen ADAS gateways requiring CAN FD bandwidth and larger code space | Select when CAN FD, >512 KB flash, or advanced peripheral sets (e.g., Ethernet MAC) are required |
| S912ZVMC64F0MLFR | Z-series 16-bit core, 64 KB flash, integrated voltage regulator, smaller 64-pin QFP package, lower cost | Designed for cost-sensitive chassis modules where full 256 KB flash and dual CAN are unnecessary | Choose for entry-level BCM or sensor nodes needing simplified BOM and reduced PCB area |
Compared with MC9S12XEP100MALR, S9S12XS256J0CALR offers proven ASIL-B qualification and smaller footprint for legacy platform continuity; versus S912ZVMC64F0MLFR, it delivers higher flash density and dual CAN for complex networking-without requiring CAN FD migration.
Availability
S9S12XS256J0CALR is available at Aetrix Electronics and suitable for engine control units, body control modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for S9S12XS256J0CALR 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 microcontroller innovation.
The S12XS family was designed specifically for cost-optimized, ASIL-B compliant automotive applications-including powertrain, chassis, and body electronics-where robustness, long-term availability, and toolchain maturity are critical.
FAQ
What is the maximum operating frequency of the S9S12XS256J0CALR?
The S9S12XS256J0CALR supports a maximum core clock frequency of 40 MHz using its internal PLL, derived from an external crystal (4–32 MHz) or oscillator input. This enables deterministic execution of control loops with cycle-accurate timing, essential for engine and transmission applications where jitter must remain below 100 ns.
Does the S9S12XS256J0CALR support CAN FD?
No, the S9S12XS256J0CALR implements two Freescale Scalable CAN (MSCAN) modules compliant with CAN 2.0B only, supporting up to 1 Mbit/s. It does not support CAN FD data rates or extended frame formats. For CAN FD requirements, consider the NXP S32K1xx or S32K3xx families.
How is EEPROM functionality implemented on the S9S12XS256J0CALR?
The S9S12XS256J0CALR provides EEPROM emulation using dedicated flash sectors managed by NXP's Flash Driver Library (FDL). This enables byte-level writes, wear leveling across multiple sectors, and atomic update operations-critical for storing calibration data, odometer values, and fault logs without external EEPROM.
What debug interface does the S9S12XS256J0CALR use?
The S9S12XS256J0CALR uses the Background Debug Mode (BDM) single-wire interface via the BKGD pin. It supports full read/write memory access, register inspection, breakpoint setting, and flash programming through standard BDM tools such as P&E Micro's Cyclone programmers and S32DS IDE integration.
Is the S9S12XS256J0CALR qualified for automotive temperature ranges?
Yes, the S9S12XS256J0CALR is qualified for the extended automotive temperature range of −40 °C to +125 °C (junction temperature), meeting AEC-Q100 Grade 1 requirements. Its thermal design-including exposed pad LQFP packaging and internal thermal monitoring-ensures reliable operation in under-hood environments.
S9S12XS256J0CALR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-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:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS256J0CALR FAQ
1.How can I place an order for S9S12XS256J0CALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0CALR 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 S9S12XS256J0CALR reliable?
The price and inventory of S9S12XS256J0CALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0CALR is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0CALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0CALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0CALR?
S9S12XS256J0CALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0CALR 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 S9S12XS256J0CALR?
For technical support, including S9S12XS256J0CALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0CALR requirements.
6.How does Aetrix verify that S9S12XS256J0CALR is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0CALR 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 S9S12XS256J0CALR meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0CALR?
All S9S12XS256J0CALR units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0CALR, 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 S9S12XS256J0CALR part is unused and in its original packaging.
Return procedure for S9S12XS256J0CALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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