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NXP Semiconductors S9S12XS128J1MALR
- Part No.:
- S9S12XS128J1MALR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S9S12XS128J1MALR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
S9S12XS128J1MALR from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based automotive-grade microcontroller featuring 128 KB on-chip flash memory, 8 KB RAM, and a 50 MHz CPU clock. It integrates dual CAN 2.0B controllers, 12-bit ADC with 16 channels, 8-channel PWM, and enhanced BDM debug interface. Designed for engine control units and body electronics, it operates across –40°C to 125°C with 5V supply tolerance.
For engineers reviewing the S9S12XS128J1MALR datasheet, S9S12XS128J1MALR pinout, S9S12XS128J1MALR application, or S9S12XS128J1MALR equivalent, key selection criteria include CAN bus support, flash endurance (100k write/erase cycles), EEPROM emulation capability, 5V I/O compatibility, and AEC-Q100 Grade 1 qualification for under-hood automotive use.
Technical Context
The S9S12XS128J1MALR implements the S12X CPU core with XGATE co-processor support for offloading time-critical CAN and PWM tasks. Its memory architecture includes paged flash with 1K block erase granularity and 256-byte programming units, enabling robust firmware updates in safety-critical systems.
Peripheral integration follows the S12XS family specification: dual MSCAN modules with independent message buffers, 12-bit ADC12B16C with hardware-triggered conversion sequencing, and TIM16B8C timer subsystem supporting input capture, output compare, and quadrature decoding - all synchronized via the S12XE Clocks and Reset Generator (S12XECRGV1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit CISC core with XGATE auxiliary processor for deterministic real-time task offload |
| Flash Memory | 128 KB on-chip flash with 100,000 write/erase cycles and 1K block erase; supports EEPROM emulation |
| RAM | 8 KB on-chip SRAM with error detection and correction (EDAC) capability |
| CAN Interfaces | Dual Freescale Scalable CAN (MSCAN) modules compliant with ISO 11898-1, each with 16 message buffers |
| ADC | 12-bit successive approximation ADC (ADC12B16C) with 16 input channels and hardware-triggered scan sequencing |
| PWM | 8-channel 16-bit PWM module (S12PWM8B8C) with center-aligned mode, dead-time insertion, and fault protection |
| Operating Temp | –40°C to +125°C ambient temperature range, qualified per AEC-Q100 Grade 1 for automotive applications |
Pinout & Package
Package: 80-pin Quad Flat Package (80QFP), 14 × 14 mm body, 0.65 mm pitch, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDF | Power supply inputs | Separate digital (VDD), analog (VDDA), and flash (VDDF) rails enable noise isolation and stable 5V operation |
| VSS, VSSA, VSSF | Ground returns | Dedicated digital (VSS), analog (VSSA), and flash (VSSF) grounds minimize coupling between domains |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset sources or watchdog timeout assertion |
| MODA, MODB | Mode configuration pins | Set boot mode (normal, single-chip, background debug) at power-on; latched during reset sequence |
| CAN0TX, CAN0RX | CAN controller 0 differential interface | Direct connection to external CAN transceiver; supports high-speed (up to 1 Mbps) and fault-tolerant modes |
| CAN1TX, CAN1RX | CAN controller 1 differential interface | Independent second CAN channel for domain separation (e.g., powertrain + chassis networks) |
| AD0[0–15] | Analog input channels | 16 dedicated ADC inputs mapped to PORTAD0; configurable for single-ended or differential acquisition |
| PT0–PT7 | PWM output channels | Eight 16-bit PWM outputs with programmable duty cycle, frequency, and polarity; support complementary pair generation |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Offloads CAN message handling, PWM synchronization, and ADC triggering-reducing main CPU load by up to 40% in real-time control loops |
| EEPROM emulation | Uses flash memory with wear-leveling algorithm to emulate 4 KB of EEPROM; supports 100k write cycles with automatic sector management |
| AEC-Q100 Grade 1 | Qualified for automotive under-hood operation (–40°C to +125°C); includes extended life test, HTOL, and ESD immunity validation |
| Dual CAN 2.0B | Two independent MSCAN modules with full mailbox arbitration, timestamping, and loopback self-test mode for functional safety compliance |
| Background Debug Mode (BDM) | Single-wire debug interface supporting flash programming, real-time register inspection, and breakpoint execution without halting main CPU |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time fuel injection timing, spark advance calculation, and OBD-II diagnostics in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary engine management MCU coordinating sensor sampling (MAP, TPS, CKP), actuator drive (injectors, ignition coils), and CAN communication with dashboard and transmission ECUs. Use Value: Dual CAN interfaces enable simultaneous communication with powertrain and diagnostic networks; 12-bit ADC resolution ensures precise air-fuel ratio feedback control. |
Use Scenario: Centralized control of lighting, door locks, window lifts, and climate functions in modern vehicle cabins. IC Role / Device Role / Timing Role: System coordinator managing LIN slave devices, monitoring switch inputs, driving relay/LED loads, and reporting status over CAN bus. Use Value: 8-channel PWM supports dimmable interior lighting; 16 ADC channels monitor thermistors, potentiometers, and current-sense resistors for closed-loop HVAC control. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Gear shift scheduling, torque converter lockup control, and hydraulic pressure regulation in automatic transmissions. IC Role / Device Role / Timing Role: Real-time controller interfacing with solenoid drivers, speed sensors (input/output shaft), and temperature sensors via dedicated ADC channels. Use Value: High-resolution 16-bit timers provide µs-level precision for pulse-width modulation of proportional solenoids; CAN redundancy ensures fail-operational behavior. |
Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding to central ADAS ECU. IC Role / Device Role / Timing Role: Edge-processing node performing time-of-flight calculations, signal conditioning, and CAN FD gateway functions for multi-sensor fusion. Use Value: XGATE co-processor handles time-critical sensor interrupt servicing while main CPU manages protocol translation; AEC-Q100 qualification ensures reliability in safety-critical zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512 | 512 KB flash, 32 KB RAM, additional SPI and SCI modules; no XGATE co-processor | Better suited for complex infotainment gateways requiring large code footprint and multiple serial interfaces | Select when >256 KB flash or extra UART/SPI peripherals are required; avoid if XGATE-assisted real-time determinism is critical |
| S9S12G128F0MLF | S12G core (not S12X), 128 KB flash, 8 KB RAM, single CAN, no XGATE, lower max clock (25 MHz) | Targeted at cost-sensitive body electronics where dual CAN and 50 MHz performance are unnecessary | Choose for non-safety-critical cabin modules with reduced peripheral count and lower temperature grade (Grade 2: –40°C to 105°C) |
Compared with MC9S12XDP512 and S9S12G128F0MLF, the S9S12XS128J1MALR uniquely balances AEC-Q100 Grade 1 qualification, dual CAN, XGATE acceleration, and 50 MHz real-time performance-making it optimal for mid-tier powertrain and chassis control where deterministic response and functional safety are essential.
Availability
S9S12XS128J1MALR is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.
Supply support for S9S12XS128J1MALR 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 support for the legacy S12XS family, including documentation, toolchains, and long-term supply commitments for automotive customers.
The S12XS product line was engineered specifically for automotive powertrain and chassis control applications demanding high reliability, real-time determinism, and AEC-Q100 qualification-prioritizing CAN integration, flash robustness, and debug accessibility over general-purpose features.
FAQ
What is the maximum operating frequency of the S9S12XS128J1MALR?
The S9S12XS128J1MALR supports a maximum CPU bus frequency of 50 MHz, achieved using the internal PLL with external crystal oscillator input (typically 4–8 MHz). This frequency enables sub-microsecond interrupt latency and deterministic execution for time-critical automotive control loops within the S9S12XS128J1MALR's architecture.
Does the S9S12XS128J1MALR support EEPROM emulation?
Yes, the S9S12XS128J1MALR supports EEPROM emulation using its on-chip flash memory. The device includes firmware libraries and hardware features-such as flash block protection and wear-leveling algorithms-that allow reliable emulation of up to 4 KB of EEPROM with 100,000 write/erase cycles, implemented directly within the S9S12XS128J1MALR's memory management system.
Is the S9S12XS128J1MALR qualified for automotive applications?
Yes, the S9S12XS128J1MALR is fully qualified to AEC-Q100 Grade 1 standards, certified for operation from –40°C to +125°C ambient temperature. It undergoes rigorous stress testing-including HTOL, ESD, and thermal cycling-as part of the official qualification program, confirming its suitability for under-hood automotive applications such as engine and transmission control where the S9S12XS128J1MALR is commonly deployed.
How many CAN interfaces does the S9S12XS128J1MALR include?
The S9S12XS128J1MALR integrates two independent Freescale Scalable CAN (MSCAN) modules compliant with ISO 11898-1. Each module supports CAN 2.0B protocol, 16 message buffers, and hardware timestamping-enabling concurrent communication on separate CAN networks, a key capability for domain-separated architectures in modern vehicles using the S9S12XS128J1MALR.
What debug interface does the S9S12XS128J1MALR use?
The S9S12XS128J1MALR uses the Background Debug Mode (BDM) interface-a single-wire, low-pin-count debug solution standardized across the HCS12 family. This interface supports flash programming, real-time register access, and non-intrusive breakpoint execution, and is fully supported by P&E Micro and SEGGER J-Link debug tools for development and validation of the S9S12XS128J1MALR.
S9S12XS128J1MALR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 40MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 91
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS128J1MALR FAQ
1.How can I place an order for S9S12XS128J1MALR through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS128J1MALR 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 S9S12XS128J1MALR reliable?
The price and inventory of S9S12XS128J1MALR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS128J1MALR is usually 5 days.
3.What payment methods are accepted for S9S12XS128J1MALR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS128J1MALR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS128J1MALR?
S9S12XS128J1MALR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS128J1MALR 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 S9S12XS128J1MALR?
For technical support, including S9S12XS128J1MALR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS128J1MALR requirements.
6.How does Aetrix verify that S9S12XS128J1MALR is sourced from the original manufacturer or authorized distributors?
All S9S12XS128J1MALR 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 S9S12XS128J1MALR meets industry standards.
7.What is the process for return or replacement of S9S12XS128J1MALR?
All S9S12XS128J1MALR units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS128J1MALR, 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 S9S12XS128J1MALR part is unused and in its original packaging.
Return procedure for S9S12XS128J1MALR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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