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NXP Semiconductors S9S12G128AMLHR
- Part No.:
- S9S12G128AMLHR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12G128AMLHR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
S9S12G128AMLHR 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 LIN/SCI interfaces, three SPI modules, and a 12-channel 10-bit ADC - deployed in body control modules and lighting systems.
For engineers reviewing the S9S12G128AMLHR datasheet, S9S12G128AMLHR pinout, S9S12G128AMLHR application, or S9S12G128AMLHR equivalent, key selection considerations include CAN 2.0A/B compliance, 48-pin LQFP package compatibility, IPLL-based EMC-optimized clocking, EEPROM sector erase capability, and LIN/SAE J2602 support for automotive sub-system integration.
Technical Context
The S9S12G128AMLHR implements the legacy S12 CPU core with 16-bit data path and Harvard-style memory architecture, supporting zero-wait-state peripheral access. It integrates an internal phase-locked loop (IPLL) frequency multiplier with internal filtering to generate stable high-frequency clocks while minimizing radiated emissions.
Its memory subsystem includes ECC-protected 128 KB flash for program storage, 8 KB SRAM for runtime variables, and 4 KB EEPROM with ECC for nonvolatile parameter retention - all accessible via unified memory mapping and supported by background debug (DBG) module for in-circuit emulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12 16-bit CISC core, 25 MHz bus speed - enables deterministic real-time control without instruction pipelining complexity |
| Flash Memory | 128 KB with ECC - supports robust firmware storage and field updates with error detection/correction |
| SRAM | 8 KB - sufficient for stack, heap, and real-time task buffers in body-control applications |
| EEPROM | 4 KB with ECC - allows fine-grained parameter storage and wear-leveling across 64-byte sectors |
| ADC | 12-channel, 10-bit successive approximation - provides sensor interface resolution for HVAC and occupant detection |
| MSCAN Module | 1 × CAN 2.0A/B controller - enables communication with vehicle networks at up to 1 Mbps |
| LIN/SCI Interfaces | 3 × LIN/SCI modules - supports SAE J2602-compliant slave nodes and diagnostic communication |
| PWM Channels | 8 × 8-bit PWM - drives LED dimming, motor control, and solenoid actuation in lighting and door modules |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 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 and improve ADC accuracy |
| VSS, VSSA, VSSPLL | Ground returns | Separate ground paths isolate switching noise from sensitive analog/PLL circuits |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with external watchdog or power-on reset ICs |
| MODA, MODB | Mode selection inputs | Configure boot mode (internal flash vs. external bus) at power-up; tied to VDD or VSS during reset |
| PORTA[7:0] | General-purpose I/O with interrupt | 8-bit port supporting wake-up from stop/wait modes - used for door switch sensing and RKE signal capture |
| PORTB[7:0] | General-purpose I/O with interrupt | 8-bit port with edge-triggered interrupts - configured as LIN TX/RX or SCI pins in automotive sub-modules |
| PORTC[7:0] | General-purpose I/O with interrupt | 8-bit port supporting PWM output and ADC channel multiplexing - drives LED strings and reads potentiometers |
| PORTD[7:0] | General-purpose I/O with interrupt | 8-bit port with timer input capture capability - used for tachometer signal acquisition and pulse counting |
| PORTH[7:0] | General-purpose I/O with interrupt | 8-bit port supporting MSCAN TX/RX and SPI signals - connects directly to CAN transceiver and external flash |
| AD0–AD11 | Analog input channels | 12 dedicated ADC inputs mapped to PORTA/PORTB/PORTC - enable simultaneous sensor monitoring without external mux |
| PWM0–PWM7 | PWM output signals | 8 independent 8-bit PWM outputs routed to PORTC/PORTD - support complementary drive for H-bridge motor control |
| SCI0TX, SCI0RX | Serial communication interface | Full-duplex UART with LIN break detection - meets SAE J2602 physical layer timing requirements |
| MSCAN_TX, MSCAN_RX | CAN transceiver interface | Differential CAN bus interface compliant with ISO 11898-2 - requires external high-speed CAN transceiver |
Key Features
| Feature | Design Value |
|---|---|
| ECC on Flash & EEPROM | Enables reliable long-term firmware operation in automotive temperature ranges (−40°C to 125°C) with automatic single-bit error correction |
| IPLL Clock Generation | Generates stable 25 MHz system clock from low-frequency crystal (4–8 MHz), reducing EMI and eliminating need for external oscillator |
| Background Debug (DBG) | Allows non-intrusive real-time debugging and flash programming via single-wire BDM interface - no debug code overhead |
| Small EEPROM Sector Size | 64-byte erase sectors enable efficient parameter logging and calibration data updates without full EEPROM erasure |
| Wake-up from Stop Mode | Multiple GPIO pins and peripheral interrupts (SCI, MSCAN, TIM) can resume CPU execution - critical for low-power body electronics |
| On-chip Voltage Regulator | Internal VREG supplies regulated 2.5 V to core logic and 5 V to I/O - simplifies power design and reduces external component count |
Applications
| Body Control Module (BCM) | Automotive Lighting System |
|---|---|
Use Scenario: Centralized management of door locks, window lifts, mirrors, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing CAN message routing, LIN slave coordination, and PWM-based LED driver control. Use Value: Integrates MSCAN, 3× LIN/SCI, and 8× PWM in 48-pin LQFP - eliminates need for companion logic and reduces BOM cost by 18% versus dual-MCU solution. | Use Scenario: Adaptive front-lighting and rear LED cluster control with thermal derating and fault reporting. IC Role / Device Role / Timing Role: Real-time PWM dimming controller with ADC-based temperature monitoring and CAN-based diagnostics. Use Value: 12-channel 10-bit ADC reads thermistors and photodiodes; 4 KB EEPROM stores lifetime LED usage logs - supports ASIL-B functional safety requirements. |
| Door Module Controller | Occupant Detection System |
Use Scenario: Smart door module handling power window, lock actuator, and anti-pinch sensing in compact packaging. IC Role / Device Role / Timing Role: Sensor fusion MCU processing Hall effect and current-sense inputs, driving H-bridge motor drivers via PWM. Use Value: 8× 8-bit PWM with dead-time insertion and 12× ADC channels enable precise motor current profiling and pinch detection - meets ECE R118 requirements. | Use Scenario: Seat-mounted capacitive sensing array detecting occupant presence, position, and weight for airbag deployment logic. IC Role / Device Role / Timing Role: Signal conditioning and preprocessing unit converting raw capacitance measurements into CAN messages. Use Value: On-chip voltage regulator ensures stable analog reference; ECC-protected flash stores calibration coefficients - improves long-term sensor drift compensation accuracy by ±0.5%. |
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 |
|---|---|---|---|
| MC9S12G128F0MLHR | Same core, flash, RAM, and peripherals; differs only in mask ROM version (F0) vs. flash-programmable (S9) - not field-upgradable | Used in cost-sensitive, fixed-function modules where firmware never changes post-manufacture | Select MC9S12G128F0MLHR only if production volume justifies mask ROM NRE and no field updates are required |
| SPC560B50L3 | 32-bit Power Architecture core, 512 KB flash, 48 KB RAM, dual CAN, 12-bit ADC with hardware oversampling - higher performance, larger footprint | Targeted at next-gen BCMs requiring ASIL-B software partitioning and faster CAN FD communication | Choose SPC560B50L3 when migrating to ISO 26262-compliant designs or adding OTA update capability |
Compared with MC9S12G128F0MLHR and SPC560B50L3, the S9S12G128AMLHR delivers optimal balance of flash programmability, automotive qualification, and 48-pin LQFP footprint - making it ideal for incremental upgrades of legacy S12-based body electronics without PCB redesign.
Availability
S9S12G128AMLHR is available at Aetrix Electronics and suitable for automotive body control modules, lighting systems, and door module applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for S9S12G128AMLHR 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, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The S12G family was designed specifically for cost-sensitive, space-constrained automotive body electronics - delivering 16-bit performance with 8-bit power efficiency and proven S12 software compatibility.
FAQ
What is the maximum operating temperature range for the S9S12G128AMLHR?
The S9S12G128AMLHR is qualified for automotive-grade operation from −40°C to +125°C ambient temperature. This rating applies to the full device functionality including flash programming, ADC conversion, and MSCAN communication - verified per AEC-Q100 Grade 2 requirements. The internal voltage regulator maintains stable core and I/O voltages across this range, ensuring reliable S9S12G128AMLHR operation in under-hood and cabin environments.
Does the S9S12G128AMLHR support CAN FD or only classical CAN?
The S9S12G128AMLHR supports only Classical CAN (ISO 11898-1, CAN 2.0A/B) at up to 1 Mbps - it does not implement CAN FD features such as flexible data-rate or extended data length. Its MSCAN module lacks the protocol enhancements required for CAN FD arbitration and payload handling. For CAN FD migration, designers should consider NXP's S32K series or ST's SPC58x lines instead of relying on S9S12G128AMLHR.
How many LIN slave nodes can the S9S12G128AMLHR manage simultaneously?
The S9S12G128AMLHR supports up to three independent LIN/SCI modules, each configurable as a LIN 2.2-compliant slave node. All three can operate concurrently - for example, managing separate LIN clusters for seat controls, mirror adjustment, and steering wheel switches. Each module includes dedicated LIN break detection and synchronization fields, enabling S9S12G128AMLHR to meet SAE J2602 timing tolerances without external assist logic.
Is the S9S12G128AMLHR pin-compatible with other S12G family members in the same package?
Yes - the S9S12G128AMLHR in 48-pin LQFP shares identical pinout with S9S12G64AMLHR, S9S12G96AMLHR, and S9S12G192AMLHR in the same package variant. This allows direct substitution within existing PCB layouts when upgrading flash capacity or peripheral count, provided firmware accommodates the expanded memory map and feature set of the higher-density variants.
What debug interface does the S9S12G128AMLHR use, and is JTAG supported?
The S9S12G128AMLHR uses the Background Debug Mode (BDM) single-wire interface for programming and real-time debugging - not JTAG. BDM operates over dedicated BKGD pin and supports flash erase/write, register inspection, and breakpoint insertion without halting peripheral operation. While JTAG is not implemented, the BDM interface delivers equivalent visibility and control for S9S12G128AMLHR development using CodeWarrior or third-party BDM-compatible tools.
S9S12G128AMLHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- HCS12
- Packaging:
- Tape & Reel (TR)
- 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:
S9S12G128AMLHR FAQ
1.How can I place an order for S9S12G128AMLHR through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12G128AMLHR 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 S9S12G128AMLHR reliable?
The price and inventory of S9S12G128AMLHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12G128AMLHR is usually 5 days.
3.What payment methods are accepted for S9S12G128AMLHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12G128AMLHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12G128AMLHR?
S9S12G128AMLHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12G128AMLHR 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 S9S12G128AMLHR?
For technical support, including S9S12G128AMLHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12G128AMLHR requirements.
6.How does Aetrix verify that S9S12G128AMLHR is sourced from the original manufacturer or authorized distributors?
All S9S12G128AMLHR 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 S9S12G128AMLHR meets industry standards.
7.What is the process for return or replacement of S9S12G128AMLHR?
All S9S12G128AMLHR units undergo pre-shipment inspection (PSI). If there is an issue with S9S12G128AMLHR, 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 S9S12G128AMLHR part is unused and in its original packaging.
Return procedure for S9S12G128AMLHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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