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NXP Semiconductors S9S12G128AMLL
- Part No.:
- S9S12G128AMLL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
S9S12G128AMLL.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:449
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Product details
Overview
S9S12G128AMLL from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring an S12 CPU core, 128 KB on-chip flash with ECC, 8 KB SRAM, 4 KB EEPROM, one MSCAN module, three SCI/LIN interfaces, three SPI modules, and a 16-channel 10-bit ADC - deployed in body controllers, door modules, and lighting systems.
For engineers reviewing the S9S12G128AMLL datasheet, S9S12G128AMLL pinout, S9S12G128AMLL application, or S9S12G128AMLL equivalent, key selection criteria include CAN 2.0A/B compliance, LIN/SAE J2602 support, IPLL-based EMC-optimized clocking, ECC-protected memory, and LQFP-100 package compatibility for space-constrained automotive ECUs.
Technical Context
The S9S12G128AMLL implements the legacy S12 CPU core with 25 MHz bus speed and zero-wait-state 16-bit memory/peripheral access. It integrates an IPLL frequency multiplier with internal filter for improved EMC performance and supports stop/wait mode wake-up via GPIO interrupts.
Its memory subsystem includes ECC-protected 128 KB flash, 8 KB SRAM, and 4 KB EEPROM with small erase sectors - enabling robust data logging and firmware updates in automotive environments. The device supports CAN 2.0A/B and LIN 2.1/J2602 protocols through dedicated MSCAN and SCI modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12 16-bit core, 25 MHz bus speed - enables deterministic real-time control without wait states |
| Flash Memory | 128 KB with ECC - prevents silent corruption in safety-critical automotive code storage |
| SRAM | 8 KB on-chip - sufficient for real-time task stacks and CAN message buffers |
| EEPROM | 4 KB with ECC and small erase sectors - supports frequent parameter updates in body control modules |
| ADC | 16-channel, 10-bit successive approximation - meets resolution requirements for sensor monitoring in HVAC and lighting |
| CAN Interface | 1 × MSCAN module, CAN 2.0A/B compliant - provides fault-tolerant vehicle network communication |
| LIN/SCI | 3 × SCI modules supporting LIN 2.1 and SAE J2602 - enables multi-node sub-bus control in door and seat modules |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - balances I/O count and PCB area for compact ECU designs |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Dedicated domains for digital logic, analog peripherals, and PLL - reduce noise coupling in mixed-signal operation |
| VSS, VSSA, VSSPLL | Ground returns | Separate ground paths prevent ADC reference contamination and PLL jitter |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable startup after battery transients |
| MODB, MODA | Mode selection inputs | Configure boot source (internal flash vs. external bus) at power-on - critical for production programming and debug |
| CANL, CANH | CAN differential bus pins | Direct connection to ISO 11898-2 transceiver - no external level-shifting required |
| PT0–PT7, PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7, PG0–PG7, PH0–PH7, PJ0–PJ7 | General-purpose I/O ports | Configurable as GPIO, interrupt-capable inputs, or peripheral function pins - supports wake-up from stop mode in body modules |
| AD0–AD15 | ADC input channels | 16 single-ended or 8 differential inputs - maps directly to temperature, voltage, and current sensing points |
| SCI0TX, SCI0RX, SCI1TX, SCI1RX, SCI2TX, SCI2RX | Serial communication I/O | Three full-duplex UARTs - enable concurrent LIN master/slave and diagnostic communication |
Key Features
| Feature | Design Value |
|---|---|
| ECC on Flash & EEPROM | Enables ASIL-B capable firmware storage by detecting and correcting single-bit errors in nonvolatile memory |
| IPLL with Internal Filter | Generates stable high-frequency clocks while minimizing radiated emissions - simplifies EMC certification for automotive modules |
| MSCAN Module | Hardware-accelerated CAN 2.0A/B messaging with message objects and automatic retransmission - reduces CPU load in networked ECUs |
| Small EEPROM Erase Sector | Allows byte-level parameter updates without erasing full blocks - extends EEPROM endurance in occupant detection and calibration use cases |
| Interrupt-Capable GPIO | Multiple ports support edge-triggered wake-up from stop/wait modes - essential for low-power door module operation |
Applications
| Body Controller | Door Module |
|---|---|
Use Scenario: Centralized management of interior lighting, window lifts, mirror adjustment, and lock actuation in passenger vehicles. IC Role / Device Role / Timing Role: Main application MCU executing real-time control tasks, coordinating LIN slaves, and handling CAN gateway functions. Use Value: 128 KB flash stores complex state-machine logic; MSCAN and 3×SCI enable seamless integration into vehicle-wide networks. | Use Scenario: Local control of power windows, door locks, side mirrors, and anti-pinch sensors in automotive door assemblies. IC Role / Device Role / Timing Role: Standalone node MCU with LIN slave capability and wake-on-GPIO for low-power standby operation. Use Value: Small EEPROM sectors allow frequent calibration updates; interrupt-capable GPIO minimizes current draw during vehicle sleep mode. |
| Lighting Module | Occupant Detection System |
Use Scenario: Adaptive front-lighting and interior ambient lighting control with PWM dimming and thermal monitoring. IC Role / Device Role / Timing Role: Sensor fusion MCU processing photodiode and thermistor inputs while driving 8× PWM outputs. Use Value: 16-channel 10-bit ADC captures multiple light/temperature zones; 8× 8-bit PWM channels provide independent LED channel control. | Use Scenario: Capacitive or pressure-based detection of seat occupancy and posture for airbag deployment logic and comfort systems. IC Role / Device Role / Timing Role: Signal-conditioning and classification MCU interfacing with analog sensor arrays and communicating via CAN to body domain controller. Use Value: ECC-protected EEPROM stores seat calibration profiles; ADC resolution and sampling rate meet ISO 26262 ASIL-B sensor acquisition requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12G128F0MLL | Same core, flash, RAM, and peripheral set; differs only in mask ROM version and qualification grade (AEC-Q100 Grade 2 vs. Grade 1) | Targeted at cost-sensitive non-safety-critical modules where extended temperature range is not required | Select MC9S12G128F0MLL for production programs with standard industrial temperature requirements and lower BOM cost targets |
| S9S12G128AMLH | Identical electrical and functional specification; differs only in tape-and-reel packaging (MLH = 1000-unit reel vs. MLL = 300-unit tray) | No functional difference - used interchangeably in automated SMT lines requiring different packaging formats | Choose S9S12G128AMLH when high-volume pick-and-place assembly mandates tape-and-reel delivery |
Compared with MC9S12G128F0MLL and S9S12G128AMLH, the S9S12G128AMLL offers AEC-Q100 Grade 1 qualification (−40°C to +125°C), tray packaging for prototyping and low-volume builds, and identical peripheral functionality - making it optimal for design validation and initial production releases requiring full automotive temperature compliance.
Availability
S9S12G128AMLL is available at Aetrix Electronics and suitable for body controllers, door modules, and lighting modules requiring stable component supply across automotive production lifecycles.
Supply support for S9S12G128AMLL 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 company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The S12G family was designed specifically for cost-sensitive, pin-constrained automotive body electronics - delivering 16-bit performance with 8-bit footprint efficiency and integrated CAN/LIN support for modular ECU architectures.
FAQ
What is the operating temperature range qualified for the S9S12G128AMLL?
The S9S12G128AMLL is AEC-Q100 qualified to Grade 1, with a guaranteed operating temperature range of −40°C to +125°C. This rating applies to all silicon, packaging, and internal circuitry under specified voltage and load conditions. The S9S12G128AMLL meets automotive under-hood and cabin module requirements without derating. Thermal performance is validated per JEDEC JESD22-A104 test standards.
Does the S9S12G128AMLL support CAN FD or only classical CAN?
The S9S12G128AMLL supports only classical CAN 2.0A/B protocol via its MSCAN module - it does not implement CAN FD features such as flexible data-rate or extended payload. Its MSCAN peripheral is hardware-compatible with ISO 11898-1 and supports bit rates up to 1 Mbps. For CAN FD requirements, designers must select newer S32K or MPC57xx families.
What debug interface does the S9S12G128AMLL use, and is JTAG supported?
The S9S12G128AMLL uses Background Debug Mode (BDM) via a single-wire interface (SWI), not JTAG. It requires the BDM pod or compatible debugger (e.g., P&E Micro USB-ML-12) for flash programming and real-time debugging. No JTAG port or IEEE 1149.1 support is implemented. The S9S12G128AMLL's DBG pin serves as the bidirectional SWI signal.
Is the 4 KB EEPROM in the S9S12G128AMLL emulated in flash or implemented as true EEPROM silicon?
The S9S12G128AMLL contains dedicated EEPROM silicon - not flash-emulated - with separate erase/write circuitry, 100,000 write/erase cycles endurance, and data retention exceeding 10 years at 125°C. Its 4 KB capacity is partitioned into 16-byte sectors, enabling fine-grained updates without disturbing adjacent calibration data.
Can the S9S12G128AMLL operate without an external crystal, using only its internal oscillator?
The S9S12G128AMLL cannot run reliably from the internal RC oscillator alone for production use. It requires either an external crystal (typically 4–8 MHz) feeding the IPLL or an external clock source. The internal RC oscillator is only intended for fail-safe reset recovery or very low-accuracy timing; the IPLL must be enabled for full-speed 25 MHz bus operation and CAN/LIN timing compliance.
S9S12G128AMLL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 100-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:
- 86
- 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:
S9S12G128AMLL FAQ
1.How can I place an order for S9S12G128AMLL through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12G128AMLL 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 S9S12G128AMLL reliable?
The price and inventory of S9S12G128AMLL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12G128AMLL is usually 5 days.
3.What payment methods are accepted for S9S12G128AMLL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12G128AMLL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12G128AMLL?
S9S12G128AMLL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12G128AMLL 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 S9S12G128AMLL?
For technical support, including S9S12G128AMLL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12G128AMLL requirements.
6.How does Aetrix verify that S9S12G128AMLL is sourced from the original manufacturer or authorized distributors?
All S9S12G128AMLL 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 S9S12G128AMLL meets industry standards.
7.What is the process for return or replacement of S9S12G128AMLL?
All S9S12G128AMLL units undergo pre-shipment inspection (PSI). If there is an issue with S9S12G128AMLL, 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 S9S12G128AMLL part is unused and in its original packaging.
Return procedure for S9S12G128AMLL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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