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NXP Semiconductors S9S12XS64J1CAE
- Part No.:
- S9S12XS64J1CAE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12XS64J1CAE.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,930
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Product details
Overview
S9S12XS64J1CAE from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based automotive-grade microcontroller featuring 64 KB on-chip flash memory, 4 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 S9S12XS64J1CAE datasheet, S9S12XS64J1CAE pinout, S9S12XS64J1CAE application, or S9S12XS64J1CAE 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 qualification per AEC-Q100 Grade 2 (−40°C to +105°C).
Technical Context
The S9S12XS64J1CAE implements the S12X CPU12XV1 core with enhanced addressing modes and 16-bit data path, paired with an XGATE RISC co-processor that handles time-critical peripheral interrupts independently. Its memory subsystem includes 64 KB flash organized in 1-KB sectors with EEPROM emulation support and 4 KB of general-purpose RAM.
Peripheral integration includes two Freescale Scalable CAN (MSCAN) modules, a 16-channel 12-bit ADC with configurable sample-and-hold, 8-channel PWM with center-aligned capability, and multiple serial interfaces (SCI, SPI, I²C). Clock generation uses an internal voltage-regulated oscillator (IREF) plus external crystal or ceramic resonator options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12X 16-bit CPU12XV1 with XGATE co-processor for deterministic interrupt handling |
| Flash Memory | 64 KB on-chip flash with 1-KB sector erase, EEPROM emulation, and secure boot loader support |
| RAM | 4 KB on-chip SRAM with error detection capability |
| CAN Interfaces | Dual MSCAN modules compliant with ISO 11898-1 (CAN 2.0B), each supporting 64 message objects |
| ADC | 12-bit successive approximation ADC with 16 input channels, 8 µs conversion time, and hardware-triggered sequencing |
| PWM | 8-channel 16-bit PWM module with independent dead-time insertion, center-aligned mode, and fault protection inputs |
| Operating Temperature | AEC-Q100 Grade 2 qualified: −40°C to +105°C ambient, suitable for under-hood automotive applications |
| Supply Voltage | Single 5 V ±10% supply; I/O pins tolerate 5 V regardless of VDD level |
Pinout & Package
Package: 80-pin LQFP (12 mm × 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), digital (VDD), and PLL (VDDPLL) supplies enable noise isolation for ADC and clock domains |
| VSS, VSSA, VSSPLL | Ground returns | Dedicated analog (VSSA), digital (VSS), and PLL (VSSPLL) grounds minimize coupling between sensitive subsystems |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external watchdog or power-on reset signals |
| XTAL, EXTAL | Clock oscillator terminals | Supports 4–32 MHz crystal or ceramic resonator; internal oscillator can operate standalone at 2 MHz |
| 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 bus for gateway or redundancy applications |
| AD0[0–15] | Analog input channels | 16 dedicated ADC input pins with programmable gain and reference selection (VDDA or internal 2.5 V) |
| PT[0–7], PH[0–7], PJ[0–7], PK[0–7], PM[0–7], PS[0–7], PT[0–7], PTP[0–7] | General-purpose I/O ports | Eight 8-bit bidirectional ports with individually configurable direction, pull-up/down, drive strength, and interrupt capability |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Offloads up to 128 interrupt service routines from main CPU, enabling deterministic real-time response below 1 µs latency |
| Dual MSCAN modules | Enables concurrent high-speed vehicle network communication on separate CAN buses without software arbitration overhead |
| EEPROM emulation | Uses flash sectors to emulate EEPROM with >100K write cycles and automatic wear leveling via firmware library |
| BDM interface | Single-wire background debug mode enables full read/write memory access, register inspection, and breakpoint setting during runtime |
| ADC with hardware trigger chain | Automatically sequences conversions across 16 channels using timer or PWM sync signals-no CPU intervention required |
| Fail-safe PWM | Hardware-controlled shutdown on external fault signal (e.g., overcurrent) with configurable dead-time recovery behavior |
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-millisecond loop timing. Use Value: Dual CAN interfaces allow simultaneous communication with powertrain and diagnostic networks; XGATE accelerates sensor fusion and actuator command scheduling. | Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC in passenger vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves and CAN backbone for distributed body electronics. Use Value: 16-channel ADC monitors potentiometers and thermistors; 8-channel PWM drives LED dimming and motor speed control with hardware fault protection. |
| 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-critical controller managing sensor fusion (accelerometer, gyroscope) and actuator commands with ASIL-B compliance. Use Value: AEC-Q100 Grade 2 rating ensures operation at 105°C; built-in RAM error detection supports functional safety requirements. | Use Scenario: Torque assist computation and motor phase current regulation in brushless DC steering motors. IC Role / Device Role / Timing Role: Real-time motor controller synchronizing PWM outputs with rotor position feedback from Hall sensors or encoder interface. Use Value: Hardware-triggered ADC sampling aligned to PWM periods enables precise current measurement; fail-safe PWM shuts down motor drivers on overtemperature or overcurrent events. |
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 and peripheral set but larger memory footprint | Targeted at complex gateway ECUs requiring extensive protocol stacks and OTA update storage | Select when >64 KB flash is needed for AUTOSAR OS, CAN FD, or multi-bus routing logic |
| S912XEQ512J2MAA | Same 64 KB flash but QFP-112 package; adds USB 2.0 OTG and enhanced security features (AES, RNG) | Used in infotainment head units and telematics where USB connectivity and cryptographic acceleration are required | Choose only if USB host/device capability or hardware crypto acceleration is mandatory |
Compared with MC9S12XDP512 and S912XEQ512J2MAA, the S9S12XS64J1CAE offers optimal balance of cost, footprint, and feature set for mid-tier automotive controllers-retaining dual CAN, XGATE, and AEC-Q100 Grade 2 while minimizing PCB area and BOM cost through its 80-pin LQFP package and targeted 64 KB memory allocation.
Availability
S9S12XS64J1CAE 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-compliant sourcing.
Supply support for S9S12XS64J1CAE 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 automotive, industrial, IoT, and communications infrastructure solutions, with deep expertise in microcontrollers and secure edge processing.
The S12XS family was designed specifically for cost-sensitive, high-reliability automotive applications-including powertrain, chassis, and body electronics-where deterministic real-time performance, functional safety, and long product lifecycle are critical.
FAQ
What is the maximum operating frequency of the S9S12XS64J1CAE?
The S9S12XS64J1CAE supports a maximum core clock frequency of 40 MHz using the internal PLL with external crystal input. This frequency is achievable across the full −40°C to +105°C temperature range and 4.5–5.5 V supply voltage, as validated in the AEC-Q100 stress test report. The S9S12XS64J1CAE's PLL allows flexible clock division and multiplication to derive system clocks for peripherals without requiring external high-frequency sources.
Does the S9S12XS64J1CAE support CAN FD?
No, the S9S12XS64J1CAE does not support CAN FD. It integrates two legacy Freescale MSCAN modules compliant exclusively with ISO 11898-1 (Classical CAN 2.0B) at up to 1 Mbps. CAN FD capability requires newer S32K or MagniV families. The S9S12XS64J1CAE remains suitable for established automotive networks where Classical CAN meets bandwidth and protocol requirements.
How is EEPROM functionality implemented on the S9S12XS64J1CAE?
The S9S12XS64J1CAE lacks dedicated EEPROM but provides robust EEPROM emulation using protected flash sectors. NXP's supplied AN3739 firmware library manages wear leveling, atomic writes, and error correction across designated 1-KB flash blocks. This implementation delivers >100,000 write cycles and retains data for 10+ years at 105°C-meeting EEPROM-equivalent reliability for calibration storage and configuration parameters in the S9S12XS64J1CAE.
What debug interface does the S9S12XS64J1CAE use?
The S9S12XS64J1CAE uses the Background Debug Mode (BDM) single-wire interface, compatible with standard Freescale/NXP BDM debug probes (e.g., U-Multilink, Cyclone Pro). It supports full memory read/write, register access, breakpoint insertion, and real-time variable monitoring without halting CPU execution. No JTAG or SWD interface is present-the S9S12XS64J1CAE relies solely on BDM for production and development debugging.
Is the S9S12XS64J1CAE pin-compatible with other S12XS family members?
Yes, the S9S12XS64J1CAE is pin-compatible with other 80-pin LQFP variants in the S12XS family-including S9S12XS128J1CAE and S9S12XS256J1CAE-sharing identical mechanical footprint, power/ground pinout, and peripheral signal mapping. This allows hardware reuse across memory variants, simplifying platform design and enabling firmware scalability from 64 KB to 256 KB flash without PCB revision.
S9S12XS64J1CAE 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K 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:
S9S12XS64J1CAE FAQ
1.How can I place an order for S9S12XS64J1CAE through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS64J1CAE 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 S9S12XS64J1CAE reliable?
The price and inventory of S9S12XS64J1CAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS64J1CAE is usually 5 days.
3.What payment methods are accepted for S9S12XS64J1CAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS64J1CAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS64J1CAE?
S9S12XS64J1CAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS64J1CAE 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 S9S12XS64J1CAE?
For technical support, including S9S12XS64J1CAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS64J1CAE requirements.
6.How does Aetrix verify that S9S12XS64J1CAE is sourced from the original manufacturer or authorized distributors?
All S9S12XS64J1CAE 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 S9S12XS64J1CAE meets industry standards.
7.What is the process for return or replacement of S9S12XS64J1CAE?
All S9S12XS64J1CAE units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS64J1CAE, 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 S9S12XS64J1CAE part is unused and in its original packaging.
Return procedure for S9S12XS64J1CAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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