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NXP Semiconductors MC9S12XD64MAA
- Part No.:
- MC9S12XD64MAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC9S12XD64MAA.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,376
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Product details
Overview
MC9S12XD64MAA from NXP (formerly Freescale) is a 16-bit HCS12X microcontroller featuring a 50 MHz S12X CPU core, 64 KB on-chip Flash memory, 4 KB RAM, and integrated XGATE co-processor for offloading real-time I/O tasks. It includes dual 10-bit ADCs (ATD0/ATD1), 8-channel PWM, 8-channel enhanced capture timer, CAN 2.0B controller, and multiple serial interfaces (SCI, SPI, I²C). It targets automotive body control modules requiring deterministic timing and ASIL-B–capable fault handling.
For engineers reviewing the MC9S12XD64MAA datasheet, MC9S12XD64MAA pinout, MC9S12XD64MAA application, or MC9S12XD64MAA equivalent, key selection criteria include its 112-pin LQFP package, 5V-tolerant I/O, 3.13–5.5 V operating voltage range, -40°C to +125°C temperature grade, and support for background debug via BDM interface - all critical for under-hood automotive ECUs.
Technical Context
The MC9S12XD64MAA implements the S12X CPU core with 5-stage pipeline, 16-bit data bus, and Harvard architecture with separate instruction/data caches. Its XGATE co-processor operates as an independent RISC engine with 16 KB dedicated RAM and supports up to 64 hardware-triggered threads for time-critical peripheral servicing without CPU intervention.
It integrates dual ATD converters: ATD0 (16-channel, 10-bit, 7 µs conversion) and ATD1 (8-channel, 10-bit, 8 µs conversion), both supporting external trigger inputs and configurable sample-and-hold. The device uses a PLL-based clock generation system with internal voltage regulator (3.3 V core), Pierce oscillator input (EXTAL/XTAL), and programmable low-power modes including WAIT, STOP, and FREEZE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit RISC core @ 50 MHz max - delivers 50 MIPS throughput with deterministic interrupt latency for real-time control loops. |
| Memory | 64 KB Flash (in-system programmable), 4 KB RAM, 2 KB EEPROM - sufficient for mid-complexity automotive firmware with OTA update capability. |
| ADC | Dual 10-bit ATD modules: ATD0 (16 ch, 7 µs), ATD1 (8 ch, 8 µs) - enables simultaneous sensor sampling (e.g., throttle, pedal, temp) with hardware synchronization. |
| PWM & Timer | 8-channel PWM with center-aligned/edge-aligned modes; 8-channel ECT with input capture, output compare, and quadrature decoding - suitable for motor control and encoder interfacing. |
| Communication | 1× MSCAN 2.0B controller, 2× SCI, 1× SPI, 1× I²C - meets automotive network requirements for LIN gateway, actuator control, and sensor hub functions. |
| Package & Temp | 112-pin LQFP, -40°C to +125°C ambient - qualified for engine compartment mounting per AEC-Q100 Grade 1 (with maskset-specific qualification). |
| Debug | Background Debug Module (BDM) interface - enables non-intrusive flash programming and real-time variable monitoring during vehicle calibration. |
Pinout & Package
MC9S12XD64MAA is housed in a 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) with exposed thermal pad. Pin assignments follow the S12XD family standard layout, including dedicated VDD/VSS pairs per functional block, separate analog/digital power domains (VDDA/VSSA), and dual crystal oscillator pins (EXTAL/XTAL).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PORTA[7:0] | General-purpose I/O / CAN TX/RX / PWM outputs | Multi-function port supporting high-drive GPIO, CAN physical layer signaling, and PWM waveform generation with dead-time insertion. |
| PORTB[7:0] | Analog inputs / ECT channels / SCI signals | Configurable as ATD0 analog inputs (AN0–AN7), ECT input capture (IOC0–IOC7), or SCI0/SCI1 serial I/O - enables flexible sensor/motor interface mapping. |
| PORTC[7:0] | PWM outputs / SPI / I²C / BDM | Supports PWM7–PWM0, SPI MOSI/MISO/SCK, I²C SDA/SCL, and BDM BKGD - consolidates critical communication and control signals on one port. |
| EXTAL / XTAL | Pierce oscillator input/output | Drives internal PLL at 4–32 MHz crystal frequency; enables precise clock generation for CAN bit timing and ADC sampling synchronization. |
| VDDPLL / VSSPLL | Dedicated PLL power supply | Isolates PLL circuitry from digital noise; requires local 100 nF decoupling to maintain jitter < 100 ps RMS for stable CAN communication. |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Independent 16-bit RISC engine with 16 KB RAM and 64 hardware vectors - handles time-critical ISR offload (e.g., PWM updates, ADC triggers) without CPU context switching. |
| Dual ATD converters | ATD0 (16 ch) and ATD1 (8 ch), each with configurable resolution (8/10-bit), sample-and-hold, and external trigger inputs - supports synchronized multi-sensor acquisition for closed-loop control. |
| MSCAN 2.0B controller | Full CAN 2.0B compliance with 32 message buffers, programmable acceptance filtering, and automatic retransmission - meets ISO 11898-1 for automotive network robustness. |
| Enhanced Capture Timer (ECT) | 8-channel 16-bit timer with input capture, output compare, pulse accumulation, and quadrature decode - enables precise RPM measurement and servo position feedback. |
| Background Debug (BDM) | Single-wire debug interface with flash erase/program, breakpoint, and real-time register access - allows in-vehicle firmware updates and calibration without removing the MCU. |
Applications
| Body Control Module (BCM) | Engine Coolant Fan Controller |
|---|---|
|
Use Scenario: Centralized management of lighting, door locks, window lifts, and wiper systems in modern passenger vehicles. IC Role / Device Role / Timing Role: Main controller executing real-time state machines, processing switch inputs, driving relay/LED loads, and communicating via CAN/LIN. Use Value: Integrated 8-channel PWM drives LED dimming and motor speed control; dual ATD monitors battery voltage and cabin temperature with <1% error over temperature. |
Use Scenario: Closed-loop fan speed regulation based on coolant temperature, vehicle speed, and AC demand in ICE powertrains. IC Role / Device Role / Timing Role: Real-time PID controller with 10 kHz PWM output, ATD0 sampling thermistor every 10 ms, and MSCAN reporting status to ECU. Use Value: XGATE handles PWM update and ATD triggering in hardware, freeing CPU for PID calculation; ECT measures fan tachometer signal with ±1 RPM accuracy. |
| Seat Position Memory System | Roof Module (Sunroof/Power Tilt) |
|
Use Scenario: Storing and recalling driver seat position using potentiometer feedback and motor actuation. IC Role / Device Role / Timing Role: Sensor interface (ATD1), motor control (PWM), position tracking (ECT quadrature decode), and LIN master communication. Use Value: 16-bit ECT captures encoder pulses at >20 kHz; 10-bit ATD reads seat track potentiometer with 0.1% linearity; LIN interface reduces wiring harness complexity. |
Use Scenario: Safe, smooth operation of sunroof glass and tilt panel with obstacle detection and soft-stop logic. IC Role / Device Role / Timing Role: Dual PWM channels drive bidirectional DC motors; ATD0 monitors current sense resistors for stall detection; BDM enables field calibration. Use Value: Hardware-based PWM dead-time insertion prevents shoot-through; ATD conversion completes in 7 µs enabling 100 kHz current sampling for fast overcurrent shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MAL | 512 KB Flash, 32 KB RAM, same S12X core and peripheral set - pin-compatible 112-LQFP variant with larger memory. | Targeted at higher-complexity ECUs (e.g., gateway modules) requiring larger bootloaders or diagnostic stacks. | Select when firmware size exceeds 64 KB or when future scalability to 512 KB is required; identical toolchain and pinout simplify migration. |
| S912XDG128F0MLH | NXP S12XE derivative with 128 KB Flash, 8 KB RAM, enhanced CAN FD support, and updated BGA packaging - not pin-compatible. | Designed for next-gen automotive networks requiring CAN FD data rates (up to 5 Mbps) and improved ASIL-B diagnostics. | Choose for new designs needing CAN FD or extended memory; requires PCB redesign and software adaptation due to different pinout and register map. |
Compared with MC9S12XD64MAA, MC9S12XDP512MAL offers direct memory scalability without hardware changes, while S912XDG128F0MLH introduces CAN FD and architectural enhancements at the cost of layout and firmware compatibility.
Availability
MC9S12XD64MAA is available at Aetrix Electronics and suitable for automotive body electronics, engine subsystem controllers, and industrial motion control applications requiring stable component supply, long lifecycle support, and AEC-Q100–qualified operation.
Supply support for MC9S12XD64MAA 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 markets, with deep heritage in automotive microcontrollers dating to Motorola's original 68HC11.
The MC9S12XD64MAA belongs to NXP's legacy HCS12X automotive MCU family, designed specifically for cost-sensitive, safety-aware body and chassis control units requiring deterministic real-time performance and robust EMC behavior in harsh environments.
FAQ
What is the maximum operating frequency of the MC9S12XD64MAA?
The MC9S12XD64MAA features an S12X CPU core rated for a maximum bus frequency of 50 MHz, achieved via internal PLL multiplication of the external crystal (typically 8 MHz). This yields 50 MIPS performance with consistent instruction timing - essential for meeting hard real-time deadlines in automotive control loops. The MC9S12XD64MAA maintains this frequency across its full -40°C to +125°C operating range when supplied with 4.5–5.5 V.
Does the MC9S12XD64MAA support CAN FD?
No, the MC9S12XD64MAA integrates the legacy MSCAN 2.0B controller compliant with ISO 11898-1 (Classical CAN only), supporting data rates up to 1 Mbps. It does not implement CAN FD framing, arbitration, or CRC enhancements. For CAN FD capability, designers should consider NXP's S32K or newer S12XE derivatives - the MC9S12XD64MAA remains optimized for established Classical CAN networks in body control applications.
How is flash programming performed on the MC9S12XD64MAA?
Flash programming on the MC9S12XD64MAA is performed via the Background Debug Module (BDM) interface using standard Freescale/NXP BDM protocol. This single-wire interface supports in-circuit flash erase, page programming, security byte configuration, and real-time memory inspection without halting CPU execution. Tools like P&E Micro's Multilink or SEGGER J-Link with BDM firmware are fully compatible with the MC9S12XD64MAA.
What is the role of the XGATE co-processor in the MC9S12XD64MAA?
The XGATE co-processor in the MC9S12XD64MAA is an autonomous 16-bit RISC engine with dedicated 16 KB RAM and hardware vector table. It executes time-critical tasks - such as PWM period updates, ADC result handling, and CAN message buffering - independently of the main S12X CPU. This offloading reduces CPU interrupt load and improves determinism, making the MC9S12XD64MAA especially effective in applications like motor control where sub-10 µs response times are required.
Is the MC9S12XD64MAA qualified to AEC-Q100 standards?
Yes, the MC9S12XD64MAA is qualified to AEC-Q100 Grade 1 (-40°C to +125°C) for automotive applications. Qualification applies to specific masksets (e.g., 1L15Y, 2M42E) documented in Freescale's official datasheet Appendix E. Designers must verify maskset compliance for their production lot, as electrical characteristics and qualification scope vary by silicon revision - the MC9S12XD64MAA part number itself denotes the qualified device family.
MC9S12XD64MAA 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12XD64MAA FAQ
1.How can I place an order for MC9S12XD64MAA through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12XD64MAA 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 MC9S12XD64MAA reliable?
The price and inventory of MC9S12XD64MAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12XD64MAA is usually 5 days.
3.What payment methods are accepted for MC9S12XD64MAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12XD64MAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12XD64MAA?
MC9S12XD64MAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12XD64MAA 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 MC9S12XD64MAA?
For technical support, including MC9S12XD64MAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12XD64MAA requirements.
6.How does Aetrix verify that MC9S12XD64MAA is sourced from the original manufacturer or authorized distributors?
All MC9S12XD64MAA 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 MC9S12XD64MAA meets industry standards.
7.What is the process for return or replacement of MC9S12XD64MAA?
All MC9S12XD64MAA units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12XD64MAA, 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 MC9S12XD64MAA part is unused and in its original packaging.
Return procedure for MC9S12XD64MAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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