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NXP Semiconductors S9S12G128AMLH
- Part No.:
- S9S12G128AMLH
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12G128AMLH.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:450
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Product details
Overview
S9S12G128AMLH from NXP Semiconductors is a 16-bit automotive-grade microcontroller based on the S12 CPU12 core, featuring 128 KB on-chip Flash with ECC, 8 KB SRAM, and integrated CAN 2.0B controller. It operates at up to 25 MHz, supports -40°C to +125°C ambient temperature, and includes 10-bit ADC (8-channel), 8-bit DAC, PWM, SCI, SPI, and BDM debug interface - deployed in engine control units and body electronics modules.
For engineers reviewing the S9S12G128AMLH datasheet, S9S12G128AMLH pinout, S9S12G128AMLH application, or S9S12G128AMLH equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, 128 KB Flash with ECC protection, 16-pin CAN interface support, and compatibility with legacy S12G toolchains and development environments.
Technical Context
The S9S12G128AMLH implements the CPU12 instruction set with 16-bit data/address buses and executes instructions at up to 25 MHz via internal PLL clock synthesis. 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 using Flash sectors.
Peripheral integration includes a scalable Controller Area Network (MSCAN) module compliant with ISO 11898-1, a 10-bit 8-channel ADC with external trigger capability, and a 16-bit timer module (TIM16B8CV3) supporting input capture, output compare, and PWM generation with dead-time insertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | CPU12 16-bit CISC core with 25 MHz max bus frequency - enables deterministic real-time control in safety-critical automotive functions. |
| Flash Memory | 128 KB on-chip Flash with ECC - ensures code integrity under radiation or voltage disturbance in engine bay environments. |
| SRAM | 8 KB on-chip SRAM - sufficient for real-time task stacks, CAN message buffers, and PID control variables without external memory. |
| ADC | 10-bit, 8-channel SAR ADC with 12.5 µs conversion time - supports sensor monitoring (e.g., throttle position, coolant temp) with configurable sample-and-hold. |
| CAN Interface | One MSCAN module compliant with CAN 2.0B protocol - provides robust serial communication for vehicle network nodes with programmable bit timing. |
| Operating Temperature | -40°C to +125°C ambient - qualified per AEC-Q100 Grade 1, enabling direct placement in powertrain and chassis control modules. |
| Package | 64-pin LQFP (10 × 10 mm, 0.5 mm pitch) - compatible with standard SMT reflow profiles and automotive PCB layout constraints. |
Pinout & Package
Package: 64-pin LQFP (MLPQ64, code MLH), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs (digital, analog, XOSC) | Separate domains enable noise isolation between logic, ADC reference, and oscillator circuits - critical for stable sensor signal acquisition. |
| VSS, VSSA, VSSX | Ground returns (digital, analog, XOSC) | Dedicated ground pins reduce coupling between high-speed digital switching and precision analog paths. |
| XTAL, EXTAL | Main crystal oscillator terminals | Supports 4–8 MHz external crystal for precise system clock generation; internal PLL multiplies to 25 MHz bus clock. |
| CANH, CANL | CAN differential bus interface | Direct connection to physical CAN transceiver; supports high-speed (up to 1 Mbps) fault-tolerant communication per ISO 11898-2. |
| PT0–PT7 | Timer I/O port (input capture/output compare) | Eight dedicated pins for edge-triggered timing events - used for crankshaft/camshaft position decoding in engine management. |
| AD0–AD7 | Analog input channels for ADC | Eight single-ended inputs referenced to VRL/VREFH; support 0–5 V sensor signals without external signal conditioning. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash with ECC | 128 KB Flash with hardware-based single-bit correction/double-bit detection - eliminates need for external error-handling firmware in ASIL-B systems. |
| Background Debug Module (BDM) | Single-wire debug interface with full read/write memory access and breakpoint support - enables in-circuit debugging without JTAG header footprint. |
| Scalable CAN (MSCAN) | Full CAN 2.0B implementation with 16-message object buffers, programmable acceptance filtering, and automatic retransmission - reduces host CPU overhead in networked ECU designs. |
| 16-bit Timer Module (TIM16B8CV3) | Eight independent 16-bit channels with input capture, output compare, and PWM modes - supports variable-frequency motor control and ignition timing with sub-microsecond resolution. |
| Integrated Voltage Regulator (VREG) | On-die 5 V regulator supplying internal peripherals - simplifies power design by eliminating external LDO for core logic and ADC reference. |
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 control MCU executing closed-loop PID algorithms, managing CAN diagnostics, and synchronizing sensor sampling to crankshaft position. Use Value: 128 KB Flash accommodates complex calibration maps; AEC-Q100 Grade 1 rating ensures reliability at 125°C under hood conditions. |
Use Scenario: Centralized lighting control, door lock actuation, and window lift sequencing in passenger vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves, driving relays/LEDs via GPIO and PWM, and logging fault codes over CAN. Use Value: Integrated 8-bit DAC generates analog dimming references; 8 KB SRAM buffers multi-node LIN messages without external RAM. |
| Transmission Control Unit (TCU) | Heating/Ventilation Control |
|
Use Scenario: Gear shift scheduling, torque converter clutch control, and hydraulic pressure regulation in automatic transmissions. IC Role / Device Role / Timing Role: High-integrity timing controller using TIM16B8CV3 for solenoid driver timing and ADC for oil temperature/pressure sensing. Use Value: ECC-protected Flash prevents corruption of shift logic during electrical transients; CAN interface enables seamless integration with engine and chassis networks. |
Use Scenario: HVAC blower speed control, blend door actuation, and cabin temperature feedback in climate systems. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating thermistor, humidity, and sunlight sensor data; generating PWM fan drive and stepper motor commands. Use Value: 10-bit ADC resolves ±0.5°C temperature changes; integrated VREG powers external op-amps and Hall-effect sensors directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9S12G128F0MLH | Same core, package, and peripheral set but with 128 KB Flash without ECC - lower cost, no error correction capability. | Suitable for non-safety-critical applications where AEC-Q100 Grade 1 is required but ASIL compliance is not mandated. | Select when Flash integrity requirements are relaxed and BOM cost reduction is prioritized over functional safety assurance. |
| S9S12G48AMLH | Identical architecture and package but with 48 KB Flash, 4 KB SRAM, and reduced ADC channel count (6 instead of 8). | Targeted at simpler body electronics functions (e.g., mirror control, seat position memory) with smaller firmware footprint. | Choose when application code size remains below 48 KB and fewer analog inputs are needed - reduces licensing and toolchain costs. |
Compared with S9S12G128F0MLH, the S9S12G128AMLH adds Flash ECC for ASIL-B readiness; compared with S9S12G48AMLH, it delivers 2.7× more Flash and 2× more SRAM for complex real-time control tasks requiring larger calibration tables and multitasking OS support.
Availability
S9S12G128AMLH is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body electronics systems requiring stable component supply across extended automotive lifecycles.
Supply support for S9S12G128AMLH 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with headquarters in Eindhoven, Netherlands.
The MC9S12G family was designed specifically for cost-sensitive, high-reliability automotive applications - delivering AEC-Q100 qualified 16-bit control performance with integrated CAN, Flash ECC, and debug capabilities in compact LQFP packages.
FAQ
What is the maximum operating frequency of the S9S12G128AMLH?
The S9S12G128AMLH achieves a maximum bus frequency of 25 MHz using its internal Phase-Locked Loop (IPLL) driven by an external 4–8 MHz crystal. This frequency is sustained across the full -40°C to +125°C operating range and is validated per AEC-Q100 Grade 1 requirements. The S9S12G128AMLH does not support overclocking beyond this specification.
Does the S9S12G128AMLH support CAN FD?
No, the S9S12G128AMLH integrates the legacy MSCAN module compliant only with CAN 2.0A/B protocols (up to 1 Mbps). It does not support CAN FD features such as flexible data-rate, extended data length, or CRC enhancements. For CAN FD, designers must select NXP's S32K series or standalone CAN FD controllers.
Is the S9S12G128AMLH pin-compatible with other MC9S12G family members?
Yes, the S9S12G128AMLH shares the same 64-pin LQFP (MLH) package and pinout with S9S12G48AMLH, S9S12G64AMLH, and S9S12G96AMLH - enabling hardware reuse across variants. Pin assignments for VDD, VSS, CANH/CANL, XTAL/EXTAL, and primary I/O ports are identical across these models.
What debug interface does the S9S12G128AMLH use?
The S9S12G128AMLH uses the Background Debug Module (BDM) interface - a single-wire, low-pin-count debug solution supporting full memory access, register inspection, and breakpoint execution. It requires only the BKGD pin and ground, eliminating the need for JTAG headers or additional debug connectors on production PCBs.
How is Flash memory protected against corruption in the S9S12G128AMLH?
The S9S12G128AMLH implements hardware-based Error Correction Code (ECC) across its entire 128 KB Flash array, detecting and correcting single-bit errors and detecting double-bit errors in real time. This protection is active during both program execution and Flash programming operations, meeting ASIL-B requirements per ISO 26262.
S9S12G128AMLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-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:
- 54
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12G128AMLH FAQ
1.How can I place an order for S9S12G128AMLH through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12G128AMLH 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 S9S12G128AMLH reliable?
The price and inventory of S9S12G128AMLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12G128AMLH is usually 5 days.
3.What payment methods are accepted for S9S12G128AMLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12G128AMLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12G128AMLH?
S9S12G128AMLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12G128AMLH 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 S9S12G128AMLH?
For technical support, including S9S12G128AMLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12G128AMLH requirements.
6.How does Aetrix verify that S9S12G128AMLH is sourced from the original manufacturer or authorized distributors?
All S9S12G128AMLH 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 S9S12G128AMLH meets industry standards.
7.What is the process for return or replacement of S9S12G128AMLH?
All S9S12G128AMLH units undergo pre-shipment inspection (PSI). If there is an issue with S9S12G128AMLH, 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 S9S12G128AMLH part is unused and in its original packaging.
Return procedure for S9S12G128AMLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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