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NXP Semiconductors S912XDT512J1MAAR
- Part No.:
- S912XDT512J1MAAR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XDT512J1MAAR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,253
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Product details
Overview
S912XDT512J1MAAR from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X microcontroller featuring a 50 MHz S12X CPU core, 512 KB on-chip flash memory, 32 KB RAM, and integrated XGATE co-processor for real-time peripheral offload. It includes dual 10-bit ADCs (ATD0/ATD1), 8-channel PWM, 6-channel SCI, 3-channel SPI, I²C, CAN 2.0B controller, and enhanced capture timer - deployed in automotive body control modules requiring deterministic timing, sensor fusion, and multi-protocol communication.
For engineers reviewing the S912XDT512J1MAAR datasheet, S912XDT512J1MAAR pinout, S912XDT512J1MAAR application, or S912XDT512J1MAAR equivalent, this page delivers verified technical context, package mapping, functional pin roles, validated alternatives, and supply-chain support tailored to industrial and automotive embedded design cycles.
Technical Context
The S912XDT512J1MAAR implements the S12X CPU core with 5-stage pipeline, XGATE RISC co-processor (32-bit, 25 MIPS), and tightly coupled memory architecture supporting concurrent CPU/XGATE execution. Its clock system integrates PLL, Pierce oscillator, and multiple clock sources enabling flexible low-power modes including WAIT, STOP, and FREEZE.
Peripheral integration includes two independent ATD converters (16-channel/8-channel), 8-channel PWM with center-aligned and edge-aligned modes, six SCI modules supporting LIN 2.1, three SPI interfaces, one I²C bus, and a full CAN 2.0B controller compliant with ISO 11898-1. Memory protection and security features include background debug module (BDM), flash security byte, and COP watchdog.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit, 50 MHz max frequency - enables deterministic real-time control with 5-stage pipeline and 1.25 ns instruction cycle. |
| Flash Memory | 512 KB on-chip flash with EEPROM emulation - supports field firmware updates and data logging without external non-volatile storage. |
| RAM | 32 KB on-chip RAM - sufficient for dual-tasking between CPU and XGATE, including buffer space for CAN/SCI message queues. |
| ADC Resolution | Dual 10-bit ATD converters: ATD0 (16-channel), ATD1 (8-channel) - enables simultaneous sampling of engine sensors, battery voltage, and cabin temperature. |
| PWM Channels | 8 independent PWM channels with programmable resolution up to 16 bits - supports motor control, LED dimming, and DC-DC converter gate drive. |
| CAN Interface | One MSCAN module compliant with CAN 2.0B protocol - provides robust vehicle network communication at up to 1 Mbps. |
| Package | 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) - RoHS-compliant surface-mount package suitable for automotive PCB assembly with thermal pad. |
Pinout & Package
Package: 112-pin LQFP (Pb-free, RoHS-compliant), 16 mm × 16 mm body, 0.4 mm lead pitch, exposed thermal pad (EPAD) connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Active-low reset input | Asynchronous hardware reset signal; asserted low for ≥2 µs initiates cold start sequence and register initialization. |
| EXTAL / XTAL | Clock oscillator inputs | Drive external crystal (4–33 MHz); XTAL is output, EXTAL is input - forms Pierce oscillator for primary clock source. |
| VDDPLL / VSSPLL | Dedicated PLL power pins | Isolated 2.5 V supply for phase-locked loop circuitry - reduces jitter and improves clock stability for high-speed peripherals. |
| AN0–AN15 | Analog input channels | 16 dedicated analog inputs for ATD0; support single-ended/differential acquisition with programmable sample-and-hold timing. |
| PWM0–PWM7 | PWM output terminals | Eight independent PWM outputs with dead-time insertion, fault protection, and synchronous update capability. |
| TXD0–TXD5 / RXD0–RXD5 | SCI serial I/O | Six full-duplex UART channels; TXD/RXD pairs support LIN physical layer compliance and automatic baud rate detection. |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | 32-bit RISC engine running at 50 MHz - handles time-critical ISR tasks (e.g., CAN message filtering, ADC post-processing) without CPU intervention. |
| Dual ATD converters | ATD0 (16-channel, 10-bit, 8 µs conversion) + ATD1 (8-channel, 10-bit, 8 µs) - enables parallel sensor acquisition for closed-loop control systems. |
| Enhanced Capture Timer (ECT) | 16-bit counter/timer with 8 input capture/output compare channels - supports quadrature decoding, pulse width measurement, and precise event timestamping. |
| Memory Protection Unit (MPU) | Configurable read/write/execute access control per memory region - prevents accidental code overwrite and enforces secure boot partitioning. |
| Background Debug Module (BDM) | Single-wire debug interface supporting real-time halt/resume, register inspection, and flash programming - eliminates need for JTAG header. |
Applications
| Automotive Body Control Unit (BCU) | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Primary MCU managing LIN slave nodes, reading switch inputs, driving relays/LEDs, and communicating via CAN to gateway ECU. Use Value: Integrated CAN + LIN + PWM eliminates external transceivers and discrete drivers, reducing BOM count by ≥7 components per node. |
Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Real-time executor of FOC algorithms using XGATE for Clarke/Park transforms and PWM synchronization. Use Value: Dual ATD converters enable simultaneous current sensing (shunt resistors) and DC bus voltage monitoring with <1 µs inter-channel skew. |
| Smart Power Distribution Module | Commercial Vehicle Telematics Gateway |
Use Scenario: Intelligent fuse replacement with overcurrent detection, load shedding, and diagnostic reporting in 12/24 V truck electrical systems. IC Role / Device Role / Timing Role: System monitor aggregating current sense ADC readings, controlling solid-state switches, and logging fault events to flash. Use Value: 512 KB flash stores >10,000 fault records with timestamps; built-in COP watchdog ensures fail-safe shutdown during software hang. |
Use Scenario: Aggregation and preprocessing of GPS, accelerometer, and CAN bus data for fleet management telematics units. IC Role / Device Role / Timing Role: Edge processor performing data filtering, compression, and protocol translation before transmission via cellular modem. Use Value: Six SCI interfaces allow concurrent connection to GPS module, IMU, CAN bus, and modem - eliminating external UART expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MALR | Same S12X core, identical 512 KB flash and peripheral set, but in 112-pin QFP (non-LQFP) with different thermal pad layout. | Compatible for legacy board designs using QFP footprint; requires PCB rework for LQFP-to-QFP transition. | Select when replacing existing MC9S12XDP512MALR units or when thermal pad soldering process is not available. |
| S912XEP100J1MAL | Lower-density variant: 1 MB flash, 64 KB RAM, same peripherals - but lacks XGATE co-processor and uses older maskset (1L15Y vs. J1M). | Suitable for cost-sensitive applications where XGATE offload is unnecessary and larger flash is unused. | Choose only if application does not require concurrent real-time peripheral handling or advanced debugging features enabled by XGATE. |
Compared with S912XDT512J1MAAR, MC9S12XDP512MALR offers identical functionality in a legacy QFP package requiring mechanical redesign, while S912XEP100J1MAL sacrifices XGATE acceleration and security features for lower unit cost - making the S912XDT512J1MAAR optimal for new automotive designs demanding real-time determinism and debug flexibility.
Availability
S912XDT512J1MAAR is available at Aetrix Electronics and suitable for automotive body control units, industrial motor drives, and smart power distribution modules requiring stable component supply across extended product lifecycles.
Supply support for S912XDT512J1MAAR 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 HCS12X family, delivering automotive-grade reliability, AEC-Q100 qualification, and long-term manufacturing commitment.
The S912XDT512J1MAAR belongs to the HCS12X microcontroller product line, engineered specifically for cost-sensitive, safety-aware automotive applications requiring real-time responsiveness, mixed-signal integration, and robust debug capabilities.
FAQ
What is the maximum operating frequency of the S912XDT512J1MAAR?
The S912XDT512J1MAAR operates at a maximum CPU frequency of 50 MHz, achieved via its internal PLL locked to an external crystal (typically 8–16 MHz). This frequency is sustained across the full industrial temperature range (−40°C to +105°C) under specified VDD conditions (4.5–5.5 V), enabling deterministic real-time execution for automotive control loops.
Does the S912XDT512J1MAAR include a hardware CAN controller?
Yes, the S912XDT512J1MAAR integrates a fully compliant Freescale Scalable CAN (MSCAN) module supporting CAN 2.0B protocol, with 16 message buffers, programmable acceptance filtering, and bit rates up to 1 Mbps. It requires only an external CAN transceiver (e.g., TJA1042) to complete the physical layer.
What debug interface does the S912XDT512J1MAAR support?
The S912XDT512J1MAAR uses the Background Debug Mode (BDM) interface - a single-wire, asynchronous serial protocol accessible via the BKGD pin. It supports full-featured debugging including breakpoints, register read/write, flash programming, and real-time variable monitoring without halting peripheral operation.
How much user-accessible RAM does the S912XDT512J1MAAR provide?
The S912XDT512J1MAAR provides 32 KB of on-chip RAM, mapped across multiple memory regions (including XGATE local RAM and CPU global RAM). All 32 KB is user-accessible for stack, heap, and data buffers - with no portion reserved exclusively for boot ROM or peripheral registers.
Is the S912XDT512J1MAAR qualified for automotive use?
Yes, the S912XDT512J1MAAR is AEC-Q100 qualified (Grade 2: −40°C to +105°C), manufactured in IATF 16949-certified facilities, and designed to meet automotive EMC requirements (ISO 11452-2/4, ISO 7637-2). Its flash endurance (100K write/erase cycles) and data retention (>20 years) comply with automotive longevity standards.
S912XDT512J1MAAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 80MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 59
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.15V ~ 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:
S912XDT512J1MAAR FAQ
1.How can I place an order for S912XDT512J1MAAR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XDT512J1MAAR 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 S912XDT512J1MAAR reliable?
The price and inventory of S912XDT512J1MAAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XDT512J1MAAR is usually 5 days.
3.What payment methods are accepted for S912XDT512J1MAAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XDT512J1MAAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XDT512J1MAAR?
S912XDT512J1MAAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XDT512J1MAAR 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 S912XDT512J1MAAR?
For technical support, including S912XDT512J1MAAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XDT512J1MAAR requirements.
6.How does Aetrix verify that S912XDT512J1MAAR is sourced from the original manufacturer or authorized distributors?
All S912XDT512J1MAAR 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 S912XDT512J1MAAR meets industry standards.
7.What is the process for return or replacement of S912XDT512J1MAAR?
All S912XDT512J1MAAR units undergo pre-shipment inspection (PSI). If there is an issue with S912XDT512J1MAAR, 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 S912XDT512J1MAAR part is unused and in its original packaging.
Return procedure for S912XDT512J1MAAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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