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NXP Semiconductors MC9S12XDG128CAA
- Part No.:
- MC9S12XDG128CAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC9S12XDG128CAA.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:395
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Product details
Overview
MC9S12XDG128CAA from NXP (formerly Freescale) is a 16-bit HCS12X microcontroller featuring an S12X CPU core, 128 KB on-chip flash memory, 8 KB RAM, and integrated XGATE co-processor for offloading time-critical tasks. It supports CAN 2.0B, multiple SCI/SPI/IIC interfaces, 10-bit ATD with 16 channels, and operates at up to 50 MHz bus speed in automotive-grade temperature range (–40°C to +125°C).
For engineers reviewing the MC9S12XDG128CAA datasheet, MC9S12XDG128CAA pinout, MC9S12XDG128CAA application, or MC9S12XDG128CAA equivalent, key selection criteria include its dual-core architecture (CPU + XGATE), 112-pin LQFP package, AEC-Q100 qualification, integrated CAN controller, and support for real-time deterministic I/O handling in engine control, body electronics, and chassis systems.
Technical Context
The MC9S12XDG128CAA implements the S12X CPU core with enhanced instruction set and pipeline, coupled with the XGATE RISC co-processor - a separate 16-bit engine with dedicated 2 KB RAM and interrupt-driven thread execution. Its memory subsystem includes 128 KB flash (with EEPROM emulation), 8 KB RAM, and configurable XGATE-accessible memory regions.
Peripheral integration follows the S12XD family architecture: dual 10-bit ATD converters (ATD0 with 16 channels, ATD1 with 8), six-channel PWM, eight-channel ECT, three SCI modules, two SPI modules, two IIC modules, and one MSCAN module compliant with ISO 11898-1. Clock generation supports crystal, external clock, or PLL modes with programmable dividers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit CISC core with 5-stage pipeline and 50 MHz max bus speed |
| Flash Memory | 128 KB on-chip flash with EEPROM emulation and 100K write/erase cycles |
| RAM | 8 KB on-chip RAM (4 KB general-purpose, 2 KB XGATE local, 2 KB shared) |
| XGATE Co-processor | Dedicated 16-bit RISC engine with 2 KB local RAM and hardware semaphore support |
| Analog-to-Digital | Two independent 10-bit ATD modules: ATD0 (16-channel, 8 µs conversion), ATD1 (8-channel) |
| Communication | 1× MSCAN (CAN 2.0B), 3× SCI, 2× SPI, 2× IIC, all with independent baud rate generators |
| Timers | 8-channel PWM, 8-channel ECT (input capture/output compare), 4-channel PIT |
| Package & Temp | 112-pin LQFP, AEC-Q100 Grade 1 (–40°C to +125°C ambient operating range) |
Pinout & Package
MC9S12XDG128CAA is housed in a 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) package with exposed thermal pad. Pin functions are defined per the DG128 Port Integration Module (S12XDG128PIMV2) specification and include dedicated CANH/CANL, multiple SCI TX/RX pairs, ATD analog inputs (AN0–AN15), PWM outputs (PWM0–PWM7), and ECT I/O channels (IOC0–IOC7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Core logic supply (5.0 V ±10%), decoupled per PCB layout guidelines in Appendix C |
| VDDA, VSSA | Analog power and ground | Separate 5.0 V analog domain for ATD reference stability; requires dedicated filtering |
| EXTAL / XTAL | Crystal oscillator input/output | Supports 4–32 MHz crystals; enables precision clock source for CAN timing and ATD sampling |
| CANH / CANL | CAN differential bus interface | Direct connection to ISO 11898-compliant transceiver; integrated CAN protocol controller |
| SCI0_TX / SCI0_RX | Asynchronous serial interface | Full-duplex UART channel supporting bootloader communication and diagnostic interfaces |
| ATD0_AN0–AN15 | Analog input channels | 16 single-ended or 8 differential inputs for engine sensor monitoring (TPS, MAP, O2, etc.) |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Offloads CPU for time-critical tasks (e.g., CAN message handling, ATD post-processing) without latency penalty |
| Dual ATD converters | Simultaneous sampling of two independent analog signal sets (e.g., engine and transmission sensors) |
| AEC-Q100 Grade 1 | Qualified for under-hood automotive applications requiring operation up to +125°C ambient |
| Background Debug Module (BDM) | Single-wire debug interface enabling flash programming and real-time register inspection without halting CPU |
| Memory protection unit | Configurable flash/RAM access rights per block to enforce software partitioning and security boundaries |
| Programmable COP watchdog | Configurable timeout (0.125–16 s) with windowed mode to detect both stuck and runaway code execution |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time air-fuel ratio calculation using O2 sensor feedback and throttle position data. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop fuel injection control with sub-millisecond response to ATD triggers and CAN-based actuator commands. Use Value: XGATE handles CAN message queuing and ATD result buffering while CPU computes PID algorithms - enabling deterministic 10 ms control loop timing. | Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC via LIN/CAN gateway functions. IC Role / Device Role / Timing Role: System coordinator managing multi-protocol communication (CAN for gateway, SCI for LIN master, IIC for EEPROM config storage). Use Value: Integrated dual SCI + dual IIC eliminates need for external protocol translators, reducing BOM count and board space. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Interface |
Use Scenario: Gear shift timing optimization using turbine speed, output shaft speed, and oil temperature inputs. IC Role / Device Role / Timing Role: High-reliability controller with redundant ATD sampling and fail-safe PWM output drivers for solenoid control. Use Value: Dual ATD modules allow simultaneous sampling of critical sensors with independent trigger sources - meeting ASIL-B functional safety requirements. | Use Scenario: Pre-processing raw signals from radar or camera modules before forwarding to main ADAS processor. IC Role / Device Role / Timing Role: Edge-sensing node performing analog front-end conditioning, digital filtering, and CAN message formatting. Use Value: XGATE executes FIR filters on ATD samples in parallel with CPU handling CAN Tx/Rx - achieving <50 µs end-to-end latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP256CAA | 256 KB flash, 14 KB RAM, same pinout and peripheral set; higher memory for complex diagnostics or OTA updates | Better suited for Tier-1 ECUs requiring extended calibration tables or bootloader + application separation | Select when firmware size exceeds 128 KB or when future feature expansion is anticipated |
| S912XDG128F0MLH | NXP rebranded part (same silicon); updated maskset (M23S), improved ESD performance, identical functionality | No functional change - drop-in replacement with enhanced manufacturing yield and long-term availability | Prefer for new designs due to active production status and extended lifecycle support |
Compared with MC9S12XDG128CAA, the MC9S12XDP256CAA offers scalable memory headroom for evolving firmware, while the S912XDG128F0MLH provides identical capability with improved process reliability and guaranteed supply continuity - making it the recommended choice for production ramp.
Availability
MC9S12XDG128CAA is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and transmission control systems requiring stable component supply across automotive OEM programs and Tier-1 supplier production lines.
Supply support for MC9S12XDG128CAA 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, with deep heritage in automotive microcontrollers dating to Motorola and Freescale.
The MC9S12XDG128CAA belongs to the HCS12X family - designed specifically for cost-sensitive, high-reliability automotive applications demanding real-time performance, functional safety readiness, and AEC-Q100 compliance.
FAQ
What is the maximum operating frequency of the MC9S12XDG128CAA?
The MC9S12XDG128CAA supports a maximum bus clock frequency of 50 MHz, achieved via internal PLL multiplication of an external crystal (e.g., 8 MHz × 6.25). This frequency governs peripheral timing, ATD conversion rates, and instruction throughput. The S12X core executes instructions at approximately 25 MIPS at 50 MHz bus speed, as confirmed in Section 1.1.1 of the S12XD Family Data Sheet (Rev. 2.21).
Does the MC9S12XDG128CAA include a hardware CAN controller?
Yes, the MC9S12XDG128CAA integrates a fully compliant Freescale Scalable Controller Area Network (MSCAN) module supporting CAN 2.0B protocol, including message buffering, acceptance filtering, and automatic retransmission. It connects directly to external CAN transceivers via dedicated CANH/CANL pins and is validated for use in automotive networks per ISO 11898-1, as documented in Chapter 10 of the MC9S12XDP512 Data Sheet.
How much on-chip flash and RAM does the MC9S12XDG128CAA provide?
The MC9S12XDG128CAA contains 128 KB of on-chip flash memory and 8 KB of on-chip RAM. Flash is organized into 1-KB sectors with individual erase capability and supports EEPROM emulation. RAM is partitioned into 4 KB general-purpose, 2 KB XGATE-local, and 2 KB shared memory - all detailed in Chapter 29 (128 Kbyte Flash Module) and Chapter 17 (Memory Mapping Control) of the S12XD Family Data Sheet.
What development tools are supported for the MC9S12XDG128CAA?
The MC9S12XDG128CAA is supported by P&E Micro's Multilink Universal debugger, CodeWarrior Development Studio for HCS12X (v5.1+), and open-source tools like GNU GCC with S12X port. Hardware debugging uses the Background Debug Module (BDM) interface, which requires only a single signal (BKGD) and ground - as specified in Chapter 15 of the MC9S12XDP512 Data Sheet and validated on Freescale's DEMO9S12XDG128 evaluation board.
Is the MC9S12XDG128CAA qualified for automotive applications?
Yes, the MC9S12XDG128CAA is AEC-Q100 qualified Grade 1 (–40°C to +125°C), with full characterization for voltage, temperature, and lifetime reliability per automotive standards. It includes built-in features required for functional safety, such as COP watchdog, memory protection unit, and ECC-capable flash - all verified in Freescale's qualification reports referenced in Appendix F (Ordering Information) and Application Note AN3735.
MC9S12XDG128CAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
- 59
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12XDG128CAA FAQ
1.How can I place an order for MC9S12XDG128CAA through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12XDG128CAA 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 MC9S12XDG128CAA reliable?
The price and inventory of MC9S12XDG128CAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12XDG128CAA is usually 5 days.
3.What payment methods are accepted for MC9S12XDG128CAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12XDG128CAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12XDG128CAA?
MC9S12XDG128CAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12XDG128CAA 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 MC9S12XDG128CAA?
For technical support, including MC9S12XDG128CAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12XDG128CAA requirements.
6.How does Aetrix verify that MC9S12XDG128CAA is sourced from the original manufacturer or authorized distributors?
All MC9S12XDG128CAA 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 MC9S12XDG128CAA meets industry standards.
7.What is the process for return or replacement of MC9S12XDG128CAA?
All MC9S12XDG128CAA units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12XDG128CAA, 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 MC9S12XDG128CAA part is unused and in its original packaging.
Return procedure for MC9S12XDG128CAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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