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NXP Semiconductors S9S12G128ACLL
- Part No.:
- S9S12G128ACLL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
S9S12G128ACLL.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:450
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Product details
Overview
S9S12G128ACLL from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring an S12 CPU core running at 25 MHz, 128 KB on-chip flash with ECC, 8 KB SRAM, 4 KB EEPROM with ECC, one MSCAN module, three SCI/LIN interfaces, three SPI modules, and a 12-channel 10-bit ADC - used in body controllers, door modules, and lighting modules.
For engineers reviewing the S9S12G128ACLL datasheet, S9S12G128ACLL pinout, S9S12G128ACLL application, or S9S12G128ACLL equivalent, key selection considerations include CAN 2.0A/B compliance, LIN/SAE J2602 support, IPLL-based EMC-optimized clocking, EEPROM sector erase capability, and LQFP-100 package compatibility for space-constrained automotive ECUs.
Technical Context
The S9S12G128ACLL implements the legacy S12 CPU core with 16-bit data path and 25 MHz bus speed, supporting zero-wait-state peripheral access. It integrates an IPLL frequency multiplier with internal filtering to reduce EMI and improve EMC robustness in automotive environments.
Its memory subsystem includes ECC-protected 128 KB flash, 8 KB SRAM, and 4 KB EEPROM with small erase sectors - enabling reliable over-the-air update handling and parameter storage without full-flash reprogramming. The device supports CAN 2.0A/B via one MSCAN module and LIN 2.1/SAE J2602 via three configurable 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 with legacy S12 toolchain compatibility |
| Flash Memory | 128 KB with ECC - prevents silent data corruption in safety-critical automotive firmware storage |
| SRAM | 8 KB - sufficient for stack, heap, and real-time task buffers in body-control applications |
| EEPROM | 4 KB with ECC and small erase sectors - supports robust NV storage of calibration data and user settings |
| CAN Interface | 1 × MSCAN module, CAN 2.0A/B compliant - provides fault-tolerant vehicle network communication |
| ADC | 12-channel, 10-bit successive approximation - delivers precise sensor monitoring for HVAC and lighting feedback loops |
| Package | 100-pin LQFP - provides high I/O count and thermal performance for under-hood and junction-box mounting |
Pinout & Package
100-pin Low-Profile Quad Flat Package (LQFP), 14 mm × 14 mm, 0.5 mm pitch, thermally enhanced with exposed pad (EP). RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs | Dedicated domains for digital logic, analog peripherals, and external interface drivers - enable noise isolation between subsystems |
| VSS, VSSA, VSSX | Ground returns | Separate ground paths minimize coupling between digital switching noise and ADC reference stability |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with external watchdog or power-on reset ICs |
| MSCAN_TX / MSCAN_RX | CAN differential signal pair | Direct connection to ISO 11898-compliant transceiver - no external level-shifting required |
| SCI0_TX / SCI0_RX | LIN/UART serial interface | Supports LIN 2.1 physical layer via external LIN transceiver; software-configurable baud rate up to 20 kbps |
| PORTA[7:0] | General-purpose I/O with interrupt | Configurable as wake-up source from STOP/WAIT modes - critical for low-power door module operation |
| AD0–AD11 | Analog input channels | 12 single-ended or 6 differential inputs with internal 2.5 V reference - suitable for potentiometer, thermistor, and current-sense monitoring |
| PT0–PT7 | PWM output channels | 8 × 8-bit PWM outputs with center-aligned mode - drive LED dimming, motor speed control, and solenoid actuation |
Key Features
| Feature | Design Value |
|---|---|
| ECC-protected flash & EEPROM | Prevents undetected bit errors in firmware and calibration data - meets ASIL-B functional safety requirements |
| IPLL frequency multiplier | Generates stable system clock with internal filtering - reduces conducted emissions and simplifies board-level EMC filtering |
| Small EEPROM erase sectors | Enables byte-level parameter updates without erasing entire EEPROM - essential for field-upgradable ECU configurations |
| Three independent SCI modules | Supports simultaneous LIN master/slave roles and diagnostic UART - eliminates need for external protocol translators |
| 12-channel 10-bit ADC with precision reference | Delivers ±1 LSB INL across temperature - ensures repeatable sensor readings in cabin and under-hood environments |
Applications
| Body Controller | Door Module |
|---|---|
Use Scenario: Centralized management of interior lighting, window lift, mirror adjustment, and lock actuation in entry-level vehicles. IC Role / Device Role / Timing Role: Main application MCU executing real-time control tasks, CAN message routing, and LIN slave coordination. Use Value: 128 KB flash accommodates multi-function firmware; 100-pin LQFP provides dedicated I/O for switch sensing, motor drivers, and status LEDs. | Use Scenario: Integrated control of power windows, central locking, anti-pinch detection, and proximity-based unlock in front/rear doors. IC Role / Device Role / Timing Role: Standalone LIN slave node with local sensor processing and CAN gateway functionality to body domain controller. Use Value: Small EEPROM sectors allow secure storage of door position calibration; MSCAN + 3×SCI enable seamless integration into mixed-protocol vehicle networks. |
| Lighting Module | Smart Junction Box |
Use Scenario: Adaptive headlamp control, ambient lighting sequencing, and LED driver supervision in premium interior and exterior lighting systems. IC Role / Device Role / Timing Role: Dedicated lighting controller managing PWM dimming profiles, thermal monitoring, and fault reporting via CAN. Use Value: 8× 8-bit PWM channels support independent LED string control; 12-channel ADC monitors photodiodes and temperature sensors for closed-loop brightness regulation. | Use Scenario: Power distribution and load switching for multiple vehicle subsystems including HVAC, seat heaters, and infotainment accessories. IC Role / Device Role / Timing Role: High-reliability power management MCU with diagnostics, current sensing, and CAN-based command arbitration. Use Value: ECC-protected flash ensures firmware integrity during voltage transients; 100-pin LQFP allows direct connection to multiple high-side/low-side driver ICs and sense resistors. |
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 |
|---|---|---|---|
| MC9S12G128F0MLH | Same core, flash, RAM, and peripheral set; differs only in temperature grade (−40°C to +125°C vs. −40°C to +105°C) and marking code | Qualified for extended-temperature under-hood use; identical pinout and firmware compatibility | Select when operating ambient exceeds 105°C or AEC-Q100 Grade 1 qualification is required |
| S912ZVL128F0MLF | Z-series 16-bit core, 128 KB flash, 8 KB RAM, but adds BCCU (battery charge control unit) and enhanced CAN FD readiness; no MSCAN | Targets next-gen battery management and hybrid powertrain interfaces; lacks LIN/SAE J2602 native support | Choose for future-proofing toward CAN FD or integrated battery monitoring - requires firmware migration |
Compared with MC9S12G128F0MLH, the S9S12G128ACLL offers identical functionality at standard automotive temperature range, while S912ZVL128F0MLF introduces new powertrain-oriented peripherals at the cost of LIN compatibility and requires architectural adaptation.
Availability
S9S12G128ACLL is available at Aetrix Electronics and suitable for body controllers, door modules, and lighting modules requiring stable component supply across long-life automotive production programs.
Supply support for S9S12G128ACLL 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's automotive MCU leadership.
The S12G family was designed specifically for cost-sensitive, pin-constrained automotive body electronics - delivering 16-bit performance with 8-bit economics, CAN/LIN integration, and robust flash reliability for ECU applications up to ASIL-B.
FAQ
What is the maximum operating temperature range for the S9S12G128ACLL?
The S9S12G128ACLL is rated for operation from −40°C to +105°C ambient temperature, meeting AEC-Q100 Grade 2 qualification for automotive under-dash and cabin-mounted electronic control units. This range supports deployment in body controllers, door modules, and lighting systems where thermal exposure remains below 105°C. The S9S12G128ACLL maintains full specification compliance across this range without derating.
Does the S9S12G128ACLL support CAN FD or only classical CAN?
The S9S12G128ACLL supports only classical CAN 2.0A/B via its MSCAN module and does not implement CAN FD features such as flexible data-rate or extended payload. Its CAN controller is fully compatible with ISO 11898-1:2003 and supports bit rates up to 1 Mbps. For CAN FD, designers must consider newer families like S32K1 or S912ZVL - the S9S12G128ACLL remains optimized for legacy CAN networks in body electronics.
How many LIN channels does the S9S12G128ACLL support, and are they hardware-assisted?
The S9S12G128ACLL supports up to three LIN 2.1/SAE J2602-compliant channels using its three independent SCI modules, each with LIN break detection, sync field handling, and checksum generation in hardware. No external LIN transceiver is needed for physical layer compliance - only a single-pin external transceiver (e.g., TJA1020) is required per channel. This enables multi-node LIN slave functionality in door or seat modules without additional protocol ICs.
Is the S9S12G128ACLL pin-compatible with other S12G family members in the same package?
Yes, the S9S12G128ACLL in 100-pin LQFP is pin-compatible with all other S12G devices offered in that package variant (e.g., S9S12G240ACLL, S9S12G192ACLL), sharing identical pin functions, power domains, and reset behavior. Firmware portability is supported across flash size variants, though memory-mapped peripheral registers remain consistent - allowing scalable design reuse within the S12G family without PCB redesign.
What development tools are officially supported for the S9S12G128ACLL?
NXP officially supports the S9S12G128ACLL with CodeWarrior Development Studio for Microcontrollers (v10.x and earlier), S32DS for S12Z (legacy mode), and the TWR-S12G128 Tower System Module. Debugging is enabled via BDM interface using USB-based multilink debug probes. NXP also provides S12G-specific peripheral drivers, AN4727 application notes, and LIN/CAN example projects - all validated for the S9S12G128ACLL silicon revision.
S9S12G128ACLL 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12G128ACLL FAQ
1.How can I place an order for S9S12G128ACLL through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12G128ACLL 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 S9S12G128ACLL reliable?
The price and inventory of S9S12G128ACLL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12G128ACLL is usually 5 days.
3.What payment methods are accepted for S9S12G128ACLL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12G128ACLL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12G128ACLL?
S9S12G128ACLL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12G128ACLL 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 S9S12G128ACLL?
For technical support, including S9S12G128ACLL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12G128ACLL requirements.
6.How does Aetrix verify that S9S12G128ACLL is sourced from the original manufacturer or authorized distributors?
All S9S12G128ACLL 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 S9S12G128ACLL meets industry standards.
7.What is the process for return or replacement of S9S12G128ACLL?
All S9S12G128ACLL units undergo pre-shipment inspection (PSI). If there is an issue with S9S12G128ACLL, 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 S9S12G128ACLL part is unused and in its original packaging.
Return procedure for S9S12G128ACLL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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