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NXP Semiconductors S9S12XS256J0MAA
- Part No.:
- S9S12XS256J0MAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S9S12XS256J0MAA.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,190
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Product details
Overview
S9S12XS256J0MAA from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based microcontroller featuring 256 KB on-chip flash memory, 12 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 background debug module (BDM). Designed for automotive body control modules and industrial motor control systems requiring deterministic real-time response.
For engineers reviewing the S9S12XS256J0MAA datasheet, S9S12XS256J0MAA pinout, S9S12XS256J0MAA application, or S9S12XS256J0MAA equivalent, key selection criteria include its 80-pin QFP package, 5V tolerant I/O, CAN FD-ready timing architecture, integrated voltage regulator (3.3 V core), and support for XGATE co-processor acceleration in safety-critical firmware tasks.
Technical Context
The S9S12XS256J0MAA implements the S12X CPU core with enhanced instruction set, 24-bit addressing, and hardware multiply/divide unit. Its memory subsystem includes 256 KB flash with EEPROM emulation, 12 KB RAM, and configurable wait-state logic for external bus interfacing.
Peripheral integration includes two independent MSCAN modules supporting bit rates up to 1 Mbps, a 12-bit ADC with 1.5 µs conversion time and programmable sample-and-hold, and a flexible PWM subsystem with center-aligned and edge-aligned modes plus dead-time insertion for three-phase inverter control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit core with 24-bit address space and XGATE co-processor support |
| Flash Memory | 256 KB on-chip flash with EEPROM emulation and 100K write/erase cycles |
| RAM | 12 KB on-chip RAM with error detection capability |
| Max Clock Frequency | 50 MHz system clock via internal PLL or external crystal (1–32 MHz) |
| CAN Interfaces | Two independent Freescale Scalable CAN (MSCAN) modules, each compliant with ISO 11898-1 |
| ADC Resolution | 12-bit successive approximation ADC with 16 input channels and hardware trigger synchronization |
| PWM Channels | 8-channel 16-bit PWM with programmable dead-time, fault protection, and center-aligned mode |
| Supply Voltage | 5.0 V ±10% main supply; internal 3.3 V regulator powers core and peripherals |
Pinout & Package
Package: 80-pin Quad Flat Package (QFP), 14 mm × 14 mm, 0.65 mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 5.0 V ±10% input for I/O and analog circuitry; requires local decoupling |
| VDDA | Analog power supply | Dedicated 5.0 V analog rail for ADC and reference; isolated from digital noise |
| VSS | Digital ground | Primary return path for digital logic and peripheral I/O |
| VSSA | Analog ground | Separate ground plane for ADC and analog comparators to minimize noise coupling |
| RESET | Active-low reset input | Asynchronous reset signal with internal pull-up; supports external watchdog or power-on reset |
| XTAL | Oscillator input | Connects to external crystal (1–32 MHz) or CMOS clock source for main system clock |
| EXTAL | Oscillator output | Drives crystal; used with XTAL to configure Pierce oscillator for precise timing |
| CAN0_TX | CAN controller 0 transmit | Differential TX output for CAN0 bus; requires external transceiver (e.g., TJA1042) |
| CAN0_RX | CAN controller 0 receive | Differential RX input for CAN0 bus; connects to transceiver RX pin |
| AD00–AD15 | ADC input channels | 16 dedicated analog inputs mapped to 12-bit ADC; support single-ended and differential modes |
| PT0–PT7 | Timer channel outputs | Eight 16-bit timer output pins supporting input capture, output compare, and PWM generation |
| PE0–PE7 | General-purpose I/O port | 8-bit bidirectional port with programmable pull-up, slew rate control, and interrupt capability |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Independent 16-bit RISC engine offloads time-critical tasks (e.g., CAN message filtering, ADC post-processing) from main CPU |
| MSCAN modules | Two fully independent CAN 2.0B controllers with message buffers, acceptance filtering, and loopback self-test mode |
| Voltage regulator | On-chip 3.3 V regulator supplies core logic and internal peripherals; eliminates need for external LDO in many designs |
| Background Debug Module (BDM) | Single-wire debug interface supporting full-speed halt/resume, register inspection, and flash programming without dedicated JTAG pins |
| Security features | Flash security byte prevents unauthorized read-out; BDM access can be disabled permanently after production programming |
| Temperature sensor | Integrated die temperature sensor with 10-bit ADC readout; calibrated for ±5°C accuracy across –40°C to +125°C range |
Applications
| Automotive Body Control Unit | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and HVAC in passenger vehicles. IC Role / Device Role / Timing Role: Main system MCU coordinating CAN communication with gateway and executing real-time actuator sequencing. Use Value: Dual CAN interfaces enable simultaneous connection to powertrain and comfort networks; 256 KB flash accommodates AUTOSAR-compliant software stacks with OTA update capability. | Use Scenario: Closed-loop speed and torque control of 3-phase AC induction motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Real-time motion controller generating synchronized PWM signals and sampling current feedback via ADC. Use Value: 8-channel PWM with programmable dead-time and fault inputs ensures safe inverter switching; 12-bit ADC provides sufficient resolution for current sensing at 10 kHz sampling rate. |
| Off-Highway Vehicle Telematics | Commercial Lighting Management System |
Use Scenario: Data acquisition and remote diagnostics for construction equipment using GPS, IMU, and engine sensors. IC Role / Device Role / Timing Role: Edge node MCU aggregating sensor data, running CAN protocol stack, and managing cellular modem interface. Use Value: XGATE co-processor handles CAN message buffering and timestamping while main CPU runs Linux-compatible RTOS; 12 KB RAM supports dual-buffered telemetry packet queues. | Use Scenario: Smart streetlight control with daylight harvesting, occupancy sensing, and adaptive dimming profiles. IC Role / Device Role / Timing Role: Embedded controller managing DALI/0–10 V lighting interfaces, ambient light ADC readings, and thermal monitoring. Use Value: Integrated temperature sensor enables LED thermal derating; 16-channel ADC supports multi-zone ambient light measurement with automatic gain switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MAG | 512 KB flash, 32 KB RAM, same 80-pin QFP package; adds FlexRay interface and enhanced EEPROM | Targeted at higher-end automotive ECUs requiring larger code footprint and additional network protocol support | Select when >256 KB flash or FlexRay is required; otherwise S9S12XS256J0MAA offers better cost/performance balance |
| S912XEQ512J3M | 512 KB flash, 32 KB RAM, 112-pin LQFP; includes USB 2.0 OTG and enhanced CAN FD timing support | Designed for infotainment and gateway applications needing high-speed host/device connectivity | Choose only if USB or CAN FD physical layer timing compliance is mandatory; S9S12XS256J0MAA remains optimal for classic CAN-only systems |
Compared with MC9S12XDP512MAG and S912XEQ512J3M, the S9S12XS256J0MAA delivers optimal integration for mid-tier automotive and industrial control where 256 KB flash, dual CAN, and XGATE acceleration meet functional requirements without over-specifying memory or interface bandwidth - reducing BOM cost and layout complexity.
Availability
S9S12XS256J0MAA is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, and commercial lighting systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 2 qualification.
Supply support for S9S12XS256J0MAA 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The S12XS family, including the S9S12XS256J0MAA, was engineered for deterministic real-time control in harsh environments - emphasizing CAN robustness, on-chip safety features, and extended temperature operation (–40°C to +125°C).
FAQ
What is the maximum operating temperature rating for the S9S12XS256J0MAA?
The S9S12XS256J0MAA is qualified to AEC-Q100 Grade 2, supporting continuous operation from –40°C to +125°C ambient temperature. This rating applies to the full device including core logic, flash memory, ADC, and CAN peripherals - verified per JEDEC JESD22-A108F test conditions. The S9S12XS256J0MAA maintains full electrical specifications across this range without derating.
Does the S9S12XS256J0MAA support CAN FD?
The S9S12XS256J0MAA implements Freescale's Scalable CAN (MSCAN) modules compliant with ISO 11898-1:2003, supporting classical CAN 2.0B up to 1 Mbps. It does not support CAN FD data-rate switching or extended frame formats. For CAN FD, consider the S912XEQ512J3M or later S32K series. The S9S12XS256J0MAA remains fully interoperable with legacy CAN networks.
How is flash programming performed on the S9S12XS256J0MAA?
Flash programming on the S9S12XS256J0MAA is performed via the Background Debug Module (BDM) using a single-wire interface and standard Freescale BDM protocol. No external high-voltage programming supply is needed. The S9S12XS256J0MAA supports in-circuit flash erase/write at system voltage (5 V), with sector-level protection and security byte locking. Programming tools include P&E Micro Cyclone Pro and SEGGER J-Link with BDM firmware.
What development tools are officially supported for the S9S12XS256J0MAA?
NXP officially supports CodeWarrior Development Studio for HCS12(X) v5.1+ and S32 Design Studio for S12X (legacy mode). Hardware tools include the DEMO9S12XDT512 evaluation board and USB-ML-12 rev. C debugger. The S9S12XS256J0MAA is also compatible with third-party IDEs like IAR Embedded Workbench for HCS12 and Keil µVision with appropriate device support packs.
Is the S9S12XS256J0MAA pin-compatible with other S12XS family members?
Yes - the S9S12XS256J0MAA shares identical 80-pin QFP pinout with S9S12XS128J0MAA and S9S12XS64J0MAA. Differences are limited to flash size, RAM capacity, and peripheral enablement bits in configuration registers. This allows hardware reuse across variants during design scaling. However, the S9S12XS256J0MAA is not pin-compatible with S12XDP or S12XE derivatives due to differing peripheral mappings and power pin arrangements.
S9S12XS256J0MAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tray
- 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:
- 59
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS256J0MAA FAQ
1.How can I place an order for S9S12XS256J0MAA through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0MAA 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 S9S12XS256J0MAA reliable?
The price and inventory of S9S12XS256J0MAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0MAA is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0MAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0MAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0MAA?
S9S12XS256J0MAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0MAA 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 S9S12XS256J0MAA?
For technical support, including S9S12XS256J0MAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0MAA requirements.
6.How does Aetrix verify that S9S12XS256J0MAA is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0MAA 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 S9S12XS256J0MAA meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0MAA?
All S9S12XS256J0MAA units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0MAA, 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 S9S12XS256J0MAA part is unused and in its original packaging.
Return procedure for S9S12XS256J0MAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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