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NXP Semiconductors S9S12G128AVLF
- Part No.:
- S9S12G128AVLF
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
S9S12G128AVLF.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,698
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Product details
Overview
S9S12G128AVLF from NXP Semiconductors (formerly Freescale) is a 16-bit automotive-grade MCU featuring 128 KB on-chip Flash with ECC, 8 KB SRAM, and integrated CAN 2.0B controller. It operates at up to 25 MHz core frequency, supports -40°C to +105°C ambient temperature, and includes 10-bit and 12-bit ADCs, 8-channel PWM, and background debug interface - deployed in engine control units and body electronics modules.
For engineers reviewing the S9S12G128AVLF datasheet, S9S12G128AVLF pinout, S9S12G128AVLF application, or S9S12G128AVLF equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, 128 KB Flash with ECC protection, 16-pin CAN interface support, and compatibility with S12G family toolchains and BDM debug infrastructure.
Technical Context
The S9S12G128AVLF implements the S12 CPU12 core with 16-bit data path and 24-bit addressing, executing instructions at up to 50 MIPS via internal PLL clock multiplication. Its memory subsystem integrates 128 KB Flash (with single-bit error correction and double-bit error detection), 8 KB SRAM, and 1 KB EEPROM emulation via Flash.
Peripheral integration includes dual 10-bit/12-bit ADC modules (ADC10B12CV2 and ADC12B12CV2), 8-channel 8-bit PWM with dead-time insertion, one MSCAN 2.0B module with 16 message buffers, and full SCI/SPI/UART serial interfaces - all mapped into a unified memory space with configurable wait states and bank switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12 CPU12 16-bit CISC core with 24-bit address bus and 50 MIPS peak performance |
| Flash Memory | 128 KB on-chip Flash with ECC for single-bit correction and double-bit detection - enables ASIL-B compliant firmware storage |
| SRAM | 8 KB on-chip SRAM with parity checking - supports real-time stack and variable storage with fault detection |
| ADC Resolution | Dual ADC modules: ADC10B12CV2 (10-bit, 12-channel) and ADC12B12CV2 (12-bit, 12-channel) - selectable reference voltage inputs for sensor signal conditioning |
| CAN Interface | One MSCAN 2.0B module with 16 message buffers, programmable bit timing, and loopback self-test mode - meets ISO 11898-1 physical layer requirements |
| Operating Temperature | -40°C to +105°C ambient - qualified per AEC-Q100 Grade 1 for under-hood automotive applications |
| Package | 64-pin LQFP (10 × 10 mm, 0.5 mm pitch) - RoHS-compliant, moisture-sensitive level 3 |
Pinout & Package
64-pin LQFP package (10 × 10 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout conforms to MC9S12G128A device variant as defined in Appendix D of MC9S12G Family Reference Manual Rev. 1.25.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply rails | VDD = digital core (5 V), VDDA = analog domain (5 V), VDDX = external oscillator buffer (5 V) - require separate decoupling per layout guidelines |
| VSS, VSSA, VSSX | Ground returns | VSS = digital ground, VSSA = analog ground (isolated plane recommended), VSSX = oscillator ground - critical for noise immunity in mixed-signal operation |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset supervisor signals or manual reset button - initiates cold start sequence and register initialization |
| XTAL, EXTAL | Crystal oscillator terminals | Supports 4–8 MHz crystal or external clock source; drives internal PLL for system clock generation - primary clock source for CAN timing accuracy |
| CANH, CANL | CAN differential bus lines | Direct connection to ISO 11898-2 transceiver; integrated CAN controller handles arbitration, error framing, and automatic retransmission - no external protocol logic required |
| PT0–PT7 | Timer I/O port | 8-bit bidirectional port supporting input capture, output compare, and PWM output - used for engine crank/cam sensing and fuel injector timing |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +105°C operation with accelerated life testing - enables direct use in powertrain and chassis control modules without derating |
| On-chip Flash with ECC | 128 KB Flash with hardware-based single-bit correction and double-bit detection - eliminates need for external error-checking logic in safety-critical firmware storage |
| Dual ADC architecture | Independent 10-bit and 12-bit ADC modules with shared channel multiplexer - allows simultaneous high-speed and high-precision sensor sampling (e.g., throttle position + coolant temperature) |
| MSCAN 2.0B controller | Full CAN protocol stack implemented in hardware with 16 message buffers and flexible ID filtering - reduces CPU load by >70% vs software-based CAN handling |
| Background Debug Module (BDM) | Single-wire debug interface compatible with standard Freescale/NXP BDM tools - enables non-intrusive flash programming and real-time variable inspection during engine calibration |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and knock detection in gasoline engines. IC Role / Device Role / Timing Role: Primary controller executing closed-loop PID algorithms with sub-millisecond interrupt latency and deterministic ADC sampling. Use Value: Integrated MSCAN and dual ADCs eliminate external protocol ICs and reduce BOM count by two components while maintaining ASIL-B compliance. |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in mid-tier vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves and driving discrete power outputs via GPIO and PWM. Use Value: 8 KB SRAM with parity and 128 KB ECC Flash enable secure over-the-air update storage and rollback capability without external memory. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Interface |
Use Scenario: Gear shift scheduling, torque converter clutch control, and hydraulic pressure regulation. IC Role / Device Role / Timing Role: Safety-monitored controller with watchdog supervision and redundant sensor input validation. Use Value: AEC-Q100 Grade 1 rating and built-in COP watchdog ensure fail-safe behavior during gear engagement sequences. |
Use Scenario: Analog front-end aggregation for radar or camera proximity sensors before digitization. IC Role / Device Role / Timing Role: Signal conditioner and preprocessor converting analog sensor outputs to time-stamped digital values for host MCU. Use Value: Simultaneous 10-bit and 12-bit ADC sampling enables dynamic range optimization - e.g., low-noise 12-bit for ambient light, fast 10-bit for motion detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9S12G128F0VLF | Same die, but rated for -40°C to +85°C (Grade 2) and lacks AEC-Q100 certification | Restricted to non-powertrain applications such as infotainment head units or HVAC control | Select only when automotive qualification is not required and cost sensitivity outweighs long-term reliability needs |
| MC9S12G128MALF | Identical functional spec but packaged in 80-pin QFP with extended peripheral routing (e.g., additional SCI channels and ADC inputs) | Used where higher I/O count is needed for multi-sensor clusters or legacy bus bridging | Choose when board layout requires more GPIOs or when migrating from older S12X designs with pin-compatible footprint adaptation |
Compared with S9S12G128F0VLF, the S9S12G128AVLF adds AEC-Q100 Grade 1 qualification and extended temperature support - essential for powertrain deployment; versus MC9S12G128MALF, it trades I/O count for smaller footprint and lower system-level EMI, making it optimal for space-constrained ECUs.
Availability
S9S12G128AVLF is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control systems requiring stable component supply across automotive production lifecycles.
Supply support for S9S12G128AVLF 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 acquired Freescale in 2015 and maintains full technical and supply chain continuity for the S12G family. The company specializes in secure, automotive-qualified microcontrollers and analog solutions.
The S12G family was designed specifically for cost-sensitive, high-reliability automotive applications - emphasizing AEC-Q100 compliance, on-chip safety features, and seamless integration with legacy S12 toolchains and calibration workflows.
FAQ
What is the maximum operating frequency of the S9S12G128AVLF?
The S9S12G128AVLF achieves a maximum core frequency of 25 MHz, delivering up to 50 MIPS performance via its internal PLL. This frequency is validated across the full -40°C to +105°C temperature range and supports deterministic real-time execution for automotive control loops. The S9S12G128AVLF uses a phase-locked loop to multiply the external crystal input, enabling precise clock scaling without external frequency synthesizers.
Does the S9S12G128AVLF support CAN FD?
No, the S9S12G128AVLF integrates the legacy MSCAN 2.0B module, which supports Classical CAN (ISO 11898-1) up to 1 Mbps but does not implement CAN FD features such as flexible data-rate or extended payload length. For CAN FD applications, designers must select newer NXP S32K or MPC57xx families. The S9S12G128AVLF remains widely used in existing vehicle platforms where Classical CAN meets bandwidth and protocol requirements.
Is the S9S12G128AVLF pin-compatible with other S12G family members?
The S9S12G128AVLF shares the same 64-pin LQFP package and pinout with S9S12G64AVLF and S9S12G48AVLF, enabling hardware reuse across memory variants. However, it is not pin-compatible with 80-pin variants like MC9S12G128MALF or 48-pin S9S12GN32AVLF due to differing peripheral mappings and power pin allocations. Always verify pin function alignment using the "Pin Assignment Overview" section in the MC9S12G Family Reference Manual Rev. 1.25 before board-level substitution.
What debug interface does the S9S12G128AVLF use?
The S9S12G128AVLF uses the Background Debug Module (BDM) interface, a single-wire serial protocol compatible with standard NXP/Freescale BDM debuggers such as the USB-ML-12 and standalone POD devices. It supports full flash programming, real-time register inspection, breakpoint setting, and instruction tracing - all without halting peripheral operation. This interface is integral to the S9S12G128AVLF silicon and requires no external debug controller.
How is EEPROM functionality implemented on the S9S12G128AVLF?
The S9S12G128AVLF does not include dedicated EEPROM hardware but provides 1 KB of emulated EEPROM using a reserved region of its 128 KB Flash memory. NXP's EEPROM emulation library (EEEmu) manages wear leveling, atomic write operations, and error recovery in firmware. This approach eliminates external EEPROM components while maintaining data retention of 10 years at +85°C - verified per AEC-Q100 stress test requirements for the S9S12G128AVLF.
S9S12G128AVLF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 12V1
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- CANbus, IrDA, LINbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.13V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12G128AVLF FAQ
1.How can I place an order for S9S12G128AVLF through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12G128AVLF 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 S9S12G128AVLF reliable?
The price and inventory of S9S12G128AVLF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12G128AVLF is usually 5 days.
3.What payment methods are accepted for S9S12G128AVLF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12G128AVLF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12G128AVLF?
S9S12G128AVLF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12G128AVLF 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 S9S12G128AVLF?
For technical support, including S9S12G128AVLF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12G128AVLF requirements.
6.How does Aetrix verify that S9S12G128AVLF is sourced from the original manufacturer or authorized distributors?
All S9S12G128AVLF 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 S9S12G128AVLF meets industry standards.
7.What is the process for return or replacement of S9S12G128AVLF?
All S9S12G128AVLF units undergo pre-shipment inspection (PSI). If there is an issue with S9S12G128AVLF, 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 S9S12G128AVLF part is unused and in its original packaging.
Return procedure for S9S12G128AVLF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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