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NXP Semiconductors MC9S12XDT512CAG
- Part No.:
- MC9S12XDT512CAG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
MC9S12XDT512CAG.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:393
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Product details
Overview
MC9S12XDT512CAG from NXP (formerly Freescale) is a 16-bit HCS12X microcontroller featuring a dual-core architecture with S12X CPU and XGATE RISC coprocessor, 512 KB on-chip Flash, 32 KB RAM, and integrated CAN 2.0B controller. It operates at up to 50 MHz core frequency, supports 5V tolerant I/O, and targets automotive body control modules requiring deterministic real-time response and functional safety support.
For engineers reviewing the MC9S12XDT512CAG datasheet, MC9S12XDT512CAG pinout, MC9S12XDT512CAG application, or MC9S12XDT512CAG equivalent, key selection criteria include its 112-pin LQFP package, dual-voltage operation (5V I/O / 2.5V core), 16-channel 10-bit ATD with external trigger support, and hardware-based XGATE offload for time-critical ISR handling in automotive ECU designs.
Technical Context
The MC9S12XDT512CAG implements the S12X CPU core with enhanced instruction set and pipeline, coupled with an independent XGATE RISC engine capable of executing up to 25 MIPS concurrently. Its memory subsystem includes 512 KB Flash with EEPROM emulation, 32 KB RAM, and 4 KB XGATE code RAM - all accessible via unified memory mapping with bank switching.
Peripheral integration includes two CAN 2.0B controllers, six SCI modules, three SPI interfaces, eight PWM channels, 16-bit Enhanced Capture Timer (ECT), and dual 10-bit Analog-to-Digital Converters (ATD0/ATD1) with simultaneous sampling capability and programmable conversion sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12X 16-bit CPU + XGATE 16-bit RISC coprocessor for parallel interrupt handling |
| Max Core Frequency | 50 MHz - enables sub-10 µs interrupt latency and real-time control loop execution |
| Flash Memory | 512 KB - supports A/B firmware swapping and field-upgradable ECU software |
| RAM Size | 32 KB SRAM + 4 KB XGATE RAM - sufficient for dual-tasking buffer allocation and coprocessor code |
| Analog Inputs | 32-channel 10-bit ATD (ATD0: 16ch, ATD1: 16ch) with external trigger synchronization |
| CAN Interfaces | Two independent CAN 2.0B controllers - enables multi-bus vehicle network topology |
| I/O Voltage | 5V-tolerant digital I/O with 2.5V core supply - simplifies interface to legacy automotive sensors and actuators |
| Package | 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) - compatible with standard automotive PCB assembly processes |
Pinout & Package
MC9S12XDT512CAG is housed in a 112-pin LQFP package with exposed thermal pad, rated for -40°C to +125°C ambient operation and qualified per AEC-Q100 Grade 1. Pin assignments follow the S12XDT derivative-specific layout defined in Freescale Document MC9S12XDP512RMV2 Rev. 2.21, Appendix B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD (5V I/O), VDDX (2.5V core), VDDA/VSSA (analog supply) |
| EXTAL, XTAL | Clock oscillator inputs | Supports 4–32 MHz crystal or external clock source for main system timing |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts 5V logic level |
| CAN0_TX, CAN0_RX | CAN 2.0B differential bus interface | Direct connection to ISO 11898-compliant transceiver without level-shifting |
| SCI0_TX, SCI0_RX | UART serial interface | 5V-tolerant asynchronous communication port for diagnostics and bootloader |
| AN0–AN15 | Analog input channels (ATD0) | 16 single-ended or 8 differential inputs with programmable gain and sample-and-hold |
| ETRIG0–ETRIG3 | External trigger inputs | Synchronize ATD conversions across multiple channels using external event signals |
Key Features
| Feature | Design Value |
|---|---|
| XGATE coprocessor | Offloads time-critical ISRs (e.g., CAN message handling, PWM updates) from main CPU to reduce jitter and improve determinism |
| Dual ATD converters | ATD0 and ATD1 operate independently with separate triggers, enabling synchronized sampling of engine sensor pairs (e.g., crank/cam) |
| Background Debug Module (BDM) | Single-wire debug interface supporting flash programming, breakpoint insertion, and real-time register inspection without halting CPU |
| Memory protection unit (MPU) | Configurable region-based access control prevents accidental writes to critical code or calibration data in Flash/RAM |
| Enhanced Capture Timer (ECT) | 16-bit timer with 8 input capture/output compare channels - supports precise engine timing measurement and ignition control |
| Security module | Flash security lock with mass erase prevention and backdoor key access - protects proprietary firmware and calibration data |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of crankshaft position, throttle angle, and oxygen sensor feedback to compute spark timing and fuel injection duration. IC Role / Device Role / Timing Role: Primary controller executing closed-loop combustion control at ≤10 ms cycle intervals with sub-microsecond timer resolution. Use Value: Dual ATD converters enable synchronized sampling of crank/cam signals; XGATE handles CAN message queuing without CPU intervention. | Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC based on switch inputs, ambient temperature, and LIN/CAN messages. IC Role / Device Role / Timing Role: System coordinator interfacing with multiple low-speed peripherals and managing power sequencing across vehicle domains. Use Value: 5V-tolerant I/O eliminates level shifters for mechanical switch interfaces; integrated PWM drives LED dimming without external drivers. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Processing gear position sensor data, turbine speed, and brake switch status to determine optimal shift points and torque converter lockup. IC Role / Device Role / Timing Role: Deterministic real-time controller with guaranteed response to hydraulic solenoid activation commands within 50 µs. Use Value: ECT module measures rotational speed with 1 µs resolution; dual CAN interfaces isolate powertrain and chassis networks. | Use Scenario: Aggregating raw analog outputs from radar pre-processing ICs, camera focus sensors, and ultrasonic transducers for fusion preprocessing. IC Role / Device Role / Timing Role: Signal conditioning and timestamped data buffering node feeding high-level ADAS processor via CAN FD. Use Value: XGATE executes fast Fourier transforms on ADC samples while main CPU manages CAN messaging; 32 KB RAM supports multi-buffer ping-pong acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MAL | Same S12X core, identical peripheral set, but in 112-pin MAPBGA package with different pinout and thermal characteristics | Requires PCB redesign due to BGA footprint and solder reflow profile differences | Select when higher I/O density or improved thermal dissipation is required in space-constrained modules |
| S912XDP512J1MAL | NXP rebranded version with updated maskset (1M84E), same functional spec but revised electrical characteristics for extended temperature range | Qualified for -40°C to +125°C operation with tighter voltage regulation specs | Prefer for new designs targeting full AEC-Q100 Grade 1 compliance with latest production maskset |
Compared with MC9S12XDT512CAG, MC9S12XDP512MAL offers superior thermal performance in compact enclosures but demands BGA assembly capability, while S912XDP512J1MAL provides validated long-term reliability for harsh under-hood environments without changing software or schematic design.
Availability
MC9S12XDT512CAG is available at Aetrix Electronics and suitable for automotive ECU development, industrial motor control systems, and medical device embedded controllers requiring stable component supply and long lifecycle support.
Supply support for MC9S12XDT512CAG 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in microcontrollers, RF power, and automotive radar.
The S12X family was designed specifically for automotive body and powertrain control applications demanding high reliability, real-time performance, and functional safety features including memory protection and fail-safe peripherals.
FAQ
What is the maximum operating frequency of the MC9S12XDT512CAG?
The MC9S12XDT512CAG supports a maximum core clock frequency of 50 MHz, achieved via its internal PLL with external crystal input (4–32 MHz). This enables deterministic execution of time-critical automotive control algorithms with sub-10 µs interrupt response times, verified in the MC9S12XDP512RMV2 Rev. 2.21 datasheet Section 2.4.2.
Does the MC9S12XDT512CAG support CAN FD?
No, the MC9S12XDT512CAG integrates two CAN 2.0B controllers compliant with ISO 11898-1:2003, supporting data rates up to 1 Mbps but not CAN FD features such as flexible data-rate or extended payload. For CAN FD, designers must select newer S32K or MPC57xx families. The MC9S12XDT512CAG remains widely used in legacy and cost-sensitive CAN 2.0B automotive networks.
How much user-accessible Flash memory does the MC9S12XDT512CAG provide?
The MC9S12XDT512CAG contains 512 KB of on-chip Flash memory, fully user-programmable and organized into 2-KB sectors. Up to 4 KB is reserved for the background debug monitor (BDM), leaving 508 KB available for application code and calibration data - confirmed in Chapter 27 of the MC9S12XDP512RMV2 Rev. 2.21 datasheet.
What debugging interface does the MC9S12XDT512CAG use?
The MC9S12XDT512CAG uses the Background Debug Module (BDM) interface, a single-wire serial protocol supporting non-intrusive flash programming, real-time register inspection, and hardware breakpoints without halting the CPU. This interface is implemented on the BKGD pin and requires no dedicated JTAG pins, reducing PCB routing complexity for the MC9S12XDT512CAG.
Is the MC9S12XDT512CAG pin-compatible with other S12X derivatives like MC9S12XDP512?
No, the MC9S12XDT512CAG is not pin-compatible with MC9S12XDP512 despite sharing the same peripheral set and memory size. The 'T' suffix denotes a distinct pinout optimized for specific automotive signal routing (e.g., CAN, ATD, and ECT placement), documented separately in Freescale's derivative-specific appendices. Board-level reuse requires verification against the MC9S12XDT512CAG-specific pin assignment table.
MC9S12XDT512CAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-LQFP
- Series:
- HCS12X
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 80MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, LINbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 119
- 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):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 24x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12XDT512CAG FAQ
1.How can I place an order for MC9S12XDT512CAG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12XDT512CAG 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 MC9S12XDT512CAG reliable?
The price and inventory of MC9S12XDT512CAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12XDT512CAG is usually 5 days.
3.What payment methods are accepted for MC9S12XDT512CAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12XDT512CAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12XDT512CAG?
MC9S12XDT512CAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12XDT512CAG 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 MC9S12XDT512CAG?
For technical support, including MC9S12XDT512CAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12XDT512CAG requirements.
6.How does Aetrix verify that MC9S12XDT512CAG is sourced from the original manufacturer or authorized distributors?
All MC9S12XDT512CAG 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 MC9S12XDT512CAG meets industry standards.
7.What is the process for return or replacement of MC9S12XDT512CAG?
All MC9S12XDT512CAG units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12XDT512CAG, 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 MC9S12XDT512CAG part is unused and in its original packaging.
Return procedure for MC9S12XDT512CAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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