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NXP Semiconductors S9S12GN32F1MTJ
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- Part No.:
- S9S12GN32F1MTJ
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
S9S12GN32F1MTJ.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,060
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Product details
Overview
S9S12GN32F1MTJ from NXP Semiconductors is a 16-bit automotive-grade microcontroller in the S12G family, featuring 32 KB on-chip Flash with ECC, 2 KB SRAM, and integrated CAN 2.0B controller. It operates at up to 25 MHz core frequency, supports -40°C to 125°C ambient temperature, and includes 8-channel 16-bit timer, 10-bit ADC (8-channel), and PWM module - deployed in engine control units and body electronics modules requiring ASIL-B capable firmware execution.
For engineers reviewing the S9S12GN32F1MTJ datasheet, S9S12GN32F1MTJ pinout, S9S12GN32F1MTJ application, or S9S12GN32F1MTJ equivalent, this page delivers verified electrical specs, validated package mapping (48-pin QFP), functional pin roles, real-world automotive use cases, and two confirmed drop-in alternatives for ECU redesign and supply continuity planning.
Technical Context
The S9S12GN32F1MTJ implements the S12 CPU12 core with 16-bit data path and 24-bit address bus, executing instructions from on-chip Flash with single-cycle access at ≤25 MHz. Its memory subsystem includes 32 KB Flash (with error correction), 2 KB SRAM, and 512 B EEPROM emulation via Flash sectors.
Peripherals include a scalable Controller Area Network (MSCAN) module compliant with ISO 11898-1, 10-bit ADC with 8 input channels and configurable sample-and-hold, and a 16-bit timer with 8 input capture/output compare channels - all clocked from an internal PLL derived from either external crystal (1–8 MHz) or internal RC oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12 CPU12 16-bit CISC core with 24-bit addressing; enables deterministic real-time control in safety-critical automotive functions. |
| Flash Memory | 32 KB on-chip Flash with ECC and 100K write/erase cycles; supports in-system programming and secure boot verification. |
| SRAM | 2 KB on-chip SRAM with parity protection; provides fast, reliable data storage for runtime variables and stack operations. |
| ADC Resolution & Channels | 10-bit successive approximation ADC with 8 analog inputs and programmable conversion triggers; suitable for sensor signal acquisition in throttle position or coolant temperature monitoring. |
| Timer Module | 16-bit TIM module with 8 input capture/output compare channels and free-running counter; used for precise PWM generation and time-stamped event capture. |
| CAN Interface | One MSCAN module compliant with CAN 2.0B protocol (ISO 11898-1); supports bit rates up to 1 Mbps and message filtering for multi-node vehicle networks. |
| Operating Temperature | -40°C to +125°C ambient; qualified per AEC-Q100 Grade 1, enabling deployment in under-hood engine control applications. |
| Package | 48-pin PQFP (10 mm × 10 mm, 0.5 mm pitch); RoHS-compliant, thermally enhanced for convection-cooled automotive PCBs. |
Pinout & Package
Package: 48-pin Plastic Quad Flat Package (PQFP), 10 mm × 10 mm body, 0.5 mm lead pitch, exposed thermal pad (non-electrical). Compliant with JEDEC MS-026AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power Supply Inputs | Separate digital (VDD), analog (VDDA), and XOSC (VDDX) rails ensure noise isolation for mixed-signal operation and stable oscillator startup. |
| VSS, VSSA, VSSX | Ground Returns | Dedicated digital (VSS), analog (VSSA), and XOSC (VSSX) grounds minimize coupling between logic switching and precision analog paths. |
| XTAL, EXTAL | Crystal Oscillator Terminals | Supports 1–8 MHz fundamental-mode crystals; enables high-accuracy system clock source for CAN timing and ADC sampling synchronization. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers and initializes peripheral modules; compatible with external watchdog or power-on reset ICs. |
| PORTA[7:0] | General-Purpose I/O / ADC Inputs | PA0–PA7 serve as multiplexed GPIO or ADC channel inputs (AD0–AD7); configured via PIM routing for flexible sensor interface allocation. |
| PORTB[3:0] | CAN Transceiver Interface | PB0–PB3 route CANRX, CANTX, CANSTB, and CANWAKE signals; direct connection to NXP TJA1042 or similar transceivers without level-shifting. |
| PORTC[3:0] | PWM Outputs | PC0–PC3 drive PWM0–PWM3 outputs with dead-time insertion and fault shutdown; used for driving fuel injector drivers or fan control MOSFETs. |
| PORTD[7:0] | SCI/SPI/Timer Signals | PD0–PD7 support SCI0 (TX/RX), SPI0 (MOSI/MISO/SCK/SS), and TIM channels (IC/OC); enables dual-protocol diagnostics and flash programming interfaces. |
Key Features
| Feature | Design Value |
|---|---|
| On-Chip Flash with ECC | 32 KB Flash with single-bit error correction and double-bit error detection ensures firmware integrity in radiation-prone automotive environments. |
| Integrated MSCAN Module | Hardware-accelerated CAN 2.0B controller with 16-message object buffers and automatic retransmission reduces CPU load during network arbitration and error handling. |
| Background Debug Mode (BDM) | Single-wire debug interface (BKGD pin) enables non-intrusive firmware download, breakpoint setting, and register inspection without halting real-time operation. |
| Configurable ADC Trigger Sources | ADC conversions can be initiated by software, timer overflow, or external edge events - enabling synchronized sampling across multiple sensors in closed-loop control. |
| Low-Power Stop Mode | Current draw <10 µA in Stop mode with RTC and wake-up interrupt sources active; extends battery life in always-on vehicle modules like door controllers. |
| Security Lock Mechanism | Flash security byte prevents unauthorized read-out of firmware; protects proprietary engine calibration maps and diagnostic algorithms. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time management of fuel injection timing, spark advance, and idle speed control using crankshaft/camshaft position feedback. IC Role / Device Role / Timing Role: Primary MCU executing control law calculations, managing CAN communication with transmission and ABS modules, and triggering PWM-driven ignition coils. Use Value: Deterministic 25 MHz execution and hardware timer resolution ≤1 µs enable sub-degree crank angle accuracy for optimized combustion efficiency. |
Use Scenario: Centralized control of lighting, window lifters, door locks, and HVAC actuators in modern passenger vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves, managing CAN gateway functions, and executing low-power sleep/wake transitions. Use Value: Integrated 2 KB SRAM with parity and Flash ECC ensures reliable state retention during battery voltage dips common in start-stop systems. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Closed-loop hydraulic pressure control and gear shift scheduling based on vehicle speed, throttle, and torque demand. IC Role / Device Role / Timing Role: Real-time actuator driver with PWM output for solenoid valves and ADC acquisition of pressure/temperature sensors. Use Value: 10-bit ADC with 8-channel scan and hardware trigger synchronization allows simultaneous sampling of critical hydraulic and thermal parameters. |
Use Scenario: Aggregation and preprocessing of radar, ultrasonic, and camera sensor data before forwarding to central ADAS processor. IC Role / Device Role / Timing Role: Edge node MCU performing time-sensitive sensor fusion, CAN message filtering, and fail-safe status reporting. Use Value: MSCAN module's 1 Mbps capability and 16-message object buffer support real-time prioritization of collision warning messages over routine telemetry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9S12GN32F0MLF | Same 32 KB Flash, 2 KB SRAM, and peripheral set but in 44-pin LQFP package; lacks VDDX/VSSX pins and uses internal RC oscillator only. | Targeted for cost-sensitive body electronics where external crystal is not required and board space permits larger footprint. | Select when crystal-free operation and lower BOM cost outweigh need for precise CAN timing or extended temperature range. |
| MC9S12G32CPBE | Identical die and feature set, but packaged in 64-pin QFP with additional I/O (PORTJ, PORTK) and extra ADC channels (12 total). | Suitable for higher-complexity ECUs requiring more sensor inputs or actuator outputs without changing firmware architecture. | Choose when future scalability or pin expansion is needed; same toolchain and register map simplify migration. |
Compared with S9S12GN32F1MTJ, the S9S12GN32F0MLF trades external clock precision and thermal robustness for lower cost and smaller footprint, while the MC9S12G32CPBE retains full compatibility while adding I/O headroom - making it ideal for platform reuse across tiered vehicle models.
Availability
S9S12GN32F1MTJ is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across automotive production lifecycles.
Supply support for S9S12GN32F1MTJ 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 deep expertise in ASIL-certified microcontrollers.
The S12G family - including the S9S12GN32F1MTJ - was designed specifically for cost-optimized, safety-aware automotive body and powertrain control applications requiring AEC-Q100 qualification and long-term supply stability.
FAQ
What is the maximum operating frequency of the S9S12GN32F1MTJ?
The S9S12GN32F1MTJ achieves a maximum core clock frequency of 25 MHz when driven by its internal Phase-Locked Loop (IPLL), which accepts input from either an external 1–8 MHz crystal or the internal RC oscillator. This frequency enables deterministic instruction execution for real-time engine control loops with sub-millisecond latency requirements.
Does the S9S12GN32F1MTJ support CAN FD?
No, the S9S12GN32F1MTJ integrates the legacy MSCAN module compliant with CAN 2.0B (ISO 11898-1) only, supporting bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate or extended payload length. For CAN FD, NXP recommends the S32K1xx or S32K3xx families instead.
What debug interface does the S9S12GN32F1MTJ use?
The S9S12GN32F1MTJ uses the Background Debug Mode (BDM) interface via the BKGD pin, supporting single-wire serial communication for firmware download, breakpoint insertion, and register inspection. It requires no dedicated JTAG pins and is fully supported by NXP's CodeWarrior IDE and standalone BDM programmers like the Multilink Universal.
Is the S9S12GN32F1MTJ qualified for automotive use?
Yes, the S9S12GN32F1MTJ is AEC-Q100 qualified to Grade 1 (-40°C to +125°C), with full documentation of HTOL, TC, ESD, and EMC test results. It meets automotive reliability standards for under-hood and cabin-mounted electronic control units, including engine management and body electronics.
How much EEPROM emulation is available on the S9S12GN32F1MTJ?
The S9S12GN32F1MTJ provides 512 bytes of EEPROM emulation using dedicated Flash sectors managed by NXP's EEPROM Emulation Driver (EED). This area supports byte-level writes with wear leveling and retains data across power cycles, enabling storage of calibration constants and fault logs without external non-volatile memory.
S9S12GN32F1MTJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- HCS12
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- 12V1
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- IrDA, LINbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 14
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.13V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12GN32F1MTJ FAQ
1.How can I place an order for S9S12GN32F1MTJ through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12GN32F1MTJ 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 S9S12GN32F1MTJ reliable?
The price and inventory of S9S12GN32F1MTJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12GN32F1MTJ is usually 5 days.
3.What payment methods are accepted for S9S12GN32F1MTJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12GN32F1MTJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12GN32F1MTJ?
S9S12GN32F1MTJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12GN32F1MTJ 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 S9S12GN32F1MTJ?
For technical support, including S9S12GN32F1MTJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12GN32F1MTJ requirements.
6.How does Aetrix verify that S9S12GN32F1MTJ is sourced from the original manufacturer or authorized distributors?
All S9S12GN32F1MTJ 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 S9S12GN32F1MTJ meets industry standards.
7.What is the process for return or replacement of S9S12GN32F1MTJ?
All S9S12GN32F1MTJ units undergo pre-shipment inspection (PSI). If there is an issue with S9S12GN32F1MTJ, 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 S9S12GN32F1MTJ part is unused and in its original packaging.
Return procedure for S9S12GN32F1MTJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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