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NXP Semiconductors S912XD128F2VAA
- Part No.:
- S912XD128F2VAA
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XD128F2VAA.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:252
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Product details
Overview
S912XD128F2VAA from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X microcontroller featuring the S12X CPU core, 128 KB on-chip Flash memory, 8 KB RAM, and integrated XGATE co-processor for offloading real-time tasks. It operates at up to 50 MHz bus speed, supports CAN 2.0B, multiple SCI/SPI/IIC interfaces, and includes 10-bit ATD converters with 16 channels. It targets automotive body control modules requiring deterministic interrupt response and ASIL-B–capable functional safety support.
For engineers reviewing the S912XD128F2VAA datasheet, S912XD128F2VAA pinout, S912XD128F2VAA application, or S912XD128F2VAA equivalent, key selection criteria include its 112-pin LQFP package, dual-voltage operation (5 V I/O / 3.3 V core), maskset-specific peripheral enablement (VAA = 1L15Y maskset), and XGATE-assisted real-time processing capability in safety-critical embedded systems.
Technical Context
The S912XD128F2VAA implements the S12X CPU core with enhanced addressing modes and instruction set compatibility with legacy HC12, plus an independent XGATE RISC co-processor running at full bus speed. Its memory subsystem includes 128 KB Flash (with EEPROM emulation), 8 KB RAM, and configurable XGATE-accessible memory regions including shared CPU/XGATE space.
Peripheral integration includes two CAN 2.0B controllers, six SCI modules, three SPI modules, two IIC interfaces, 16-channel 10-bit ATD with external trigger support, 8-channel PWM with center-aligned mode, and enhanced capture timer (ECT) with input capture/output compare functionality - all mapped into a unified memory space via the S12XMMCV2 memory mapping controller.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | S12X 16-bit CISC core with 50 MHz max bus frequency and enhanced addressing modes |
| Flash Memory | 128 KB on-chip Flash with EEPROM emulation and 100K erase/write cycles |
| RAM | 8 KB on-chip RAM, including XGATE-accessible regions and shared CPU/XGATE memory area |
| Peripherals | 2× CAN 2.0B, 6× SCI, 3× SPI, 2× IIC, 16-channel 10-bit ATD, 8-channel PWM, ECT, PIT, BDM |
| Package | 112-pin LQFP (16 × 16 mm, 0.4 mm pitch), RoHS-compliant, lead-free |
| Operating Voltage | VDD = 4.5–5.5 V (I/O), VDDA/VDDPLL = 3.13–3.47 V (analog/PLL), VREG output = 3.3 V ±3% |
| Temperature Range | –40 °C to +125 °C ambient, qualified for automotive under AEC-Q100 Grade 1 |
Pinout & Package
112-pin LQFP (16 × 16 mm, 0.4 mm pitch), thermally enhanced with exposed thermal pad. Pin functions conform to S12XD family pinout specification for VAA maskset (1L15Y), including dedicated CANH/CANL, SCI0–SCI5 TX/RX, SPI0–SPI2 MOSI/MISO/SCK/SS, IIC0/IIC1 SDA/SCL, ATD analog inputs AN0–AN15, and XGATE interrupt request lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 5 V I/O domain power and return; separate VDDA/VSSA required for analog peripherals |
| EXTAL, XTAL | Clock oscillator terminals | Connects to external crystal (4–33 MHz) or ceramic resonator; enables Pierce oscillator mode |
| CANH, CANL | CAN bus differential pair | Direct interface to ISO 11898-2 compliant physical layer; supports high-speed CAN up to 1 Mbps |
| SCI0_TX, SCI0_RX | UART serial interface | Asynchronous full-duplex communication; supports LIN 2.1 master/slave when combined with timer resources |
| PWM0–PWM7 | Pulse-width modulation outputs | Eight independent PWM channels with programmable period, duty cycle, polarity, and center-aligned mode |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Dedicated 16-bit RISC engine running at full bus speed, offloading time-critical ISR handling from main CPU |
| Dual-voltage architecture | 5 V-tolerant I/O pins with internal 3.3 V regulator for core/peripherals, enabling direct connection to legacy 5 V sensors/actuators |
| Functional safety support | Built-in COP watchdog, clock monitor reset, low-voltage detection, and memory protection unit (MPU) for ASIL-B–level system design |
| Flexible clock generation | Configurable PLL with selectable multiplication factors, internal RC oscillator backup, and multiple clock source options (crystal, external clock, RC) |
| Enhanced debug capability | Background Debug Module (BDM) with real-time register/memory access, flash programming, and non-intrusive breakpoint support |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Centralized control of lighting, door locks, window lifts, and wiper systems in modern vehicles. IC Role / Device Role / Timing Role: Main application MCU managing CAN message routing, PWM-driven LED dimming, and ATD-based sensor monitoring (e.g., ambient light, temperature). Use Value: XGATE handles CAN frame filtering and SCI-based diagnostics in parallel with main CPU, reducing latency and improving real-time responsiveness. | Use Scenario: Secondary control node for throttle actuation, idle speed control, or exhaust gas recirculation (EGR) valve positioning. IC Role / Device Role / Timing Role: Safety-relevant subsystem MCU executing closed-loop PID control using ATD feedback and PWM output with jitter < 100 ns. Use Value: Dual-voltage I/O allows direct interfacing with 5 V potentiometers and 12 V solenoid drivers via external level-shifting or driver ICs. |
| Advanced HVAC Controller | Industrial Motor Drive Interface |
Use Scenario: Climate control unit managing blower speed, air mix doors, and cabin temperature sensing across multiple zones. IC Role / Device Role / Timing Role: Real-time coordinator between IIC-connected temperature sensors, SPI-driven display, and PWM-controlled DC fan motors. Use Value: Six SCI modules enable simultaneous communication with diagnostic port, remote display, and vehicle network gateways without software multiplexing. | Use Scenario: Field-oriented control (FOC) interface board for BLDC motor drives in factory automation equipment. IC Role / Device Role / Timing Role: Peripheral manager synchronizing ATD sampling, PWM update, and encoder position capture via ECT module. Use Value: Enhanced Capture Timer provides hardware-synchronized edge detection on quadrature encoder signals with sub-microsecond timestamp resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MAL | 512 KB Flash, 32 KB RAM, same 112-pin LQFP package and peripheral set; higher memory density and extended temperature range (–40 °C to +125 °C) | Targeted at full-featured ECUs requiring larger code footprint and more data buffers | Select when firmware complexity exceeds 128 KB Flash capacity or when additional RAM is needed for real-time data logging |
| S912XEQ512J2MAG | 512 KB Flash, 32 KB RAM, 144-pin LQFP, includes USB 2.0 OTG and Ethernet MAC; different pinout and larger package | Designed for gateway modules requiring protocol bridging (CAN ↔ USB/Ethernet) and higher I/O count | Choose only if USB/Ethernet connectivity is mandatory and PCB layout can accommodate 144-pin footprint |
Compared with S912XD128F2VAA, MC9S12XDP512MAL offers scalable memory headroom for future firmware updates while maintaining identical peripheral timing and pin compatibility, whereas S912XEQ512J2MAG introduces new interface layers at the cost of mechanical and electrical redesign effort.
Availability
S912XD128F2VAA is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control interfaces, and HVAC system designs requiring stable component supply, long-term lifecycle support, and AEC-Q100–qualified silicon.
Supply support for S912XD128F2VAA 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 roots in Freescale's automotive MCU leadership.
The S12XD family was designed specifically for cost-sensitive, high-reliability automotive body electronics and chassis control applications where deterministic real-time performance, functional safety compliance, and long product lifecycle are critical.
FAQ
What is the maximum operating frequency of the S912XD128F2VAA?
The S912XD128F2VAA supports a maximum bus frequency of 50 MHz, achieved via its integrated PLL with programmable multiplication factor. This frequency applies to the S12X CPU core and all on-chip peripherals, including CAN, SCI, and PWM modules. The actual achievable speed depends on external crystal frequency, PLL configuration registers (SYNR, REFDV), and voltage supply stability. S912XD128F2VAA must operate within specified VDD and VDDPLL ranges to sustain 50 MHz operation reliably across temperature.
Does the S912XD128F2VAA include a hardware watchdog timer?
Yes, the S912XD128F2VAA integrates a Computer Operating Properly (COP) watchdog timer with configurable timeout periods and independent clock source. It also features a clock monitor reset circuit that detects loss of main oscillator signal and triggers a hardware reset. Both mechanisms are documented in Chapter 2 (Clocks and Reset Generator) and Chapter 16 (Interrupt) of the MC9S12XDP512 datasheet, which covers the S912XD128F2VAA as part of the S12XD family.
Can the S912XD128F2VAA execute code from RAM?
Yes, the S912XD128F2VAA supports execution from RAM via the S12XMMCV2 memory mapping controller, allowing dynamic loading and execution of time-critical routines (e.g., motor control algorithms). The 8 KB on-chip RAM includes regions accessible by both CPU and XGATE, and the memory map permits remapping of logical addresses to physical RAM locations. This capability is confirmed in Section 17.4.2.4 (XGATE Memory Map Scheme) and Chapter 17 of the MC9S12XDP512 datasheet.
What development tools are supported for the S912XD128F2VAA?
The S912XD128F2VAA is supported by P&E Micro's Multilink Universal debugger, CodeWarrior Development Studio for HCS12X (v5.1+), and open-source toolchains like GNU GCC for HCS12 with appropriate startup code and linker scripts. These tools enable full BDM-based debugging, flash programming, and XGATE co-processor simulation. Support is validated through Freescale/NXP application notes AN2813 and AN3332, which reference S12XD derivatives including S912XD128F2VAA.
Is the S912XD128F2VAA pin-compatible with other S12XD family members?
Yes, the S912XD128F2VAA shares the same 112-pin LQFP package and pinout definition as other S12XD derivatives in the VAA maskset (1L15Y), including S912XD256 and S912XD512. Pin compatibility is guaranteed within the same package variant and maskset group per Appendix E (Derivative Differences) and Section 1.2.1 (Device Pinout) of the MC9S12XDP512 datasheet. However, peripheral enablement (e.g., number of SCI modules) may vary by maskset and must be verified in the specific device's configuration registers.
S912XD128F2VAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 2.75V
- Data Converters:
- A/D 8x10b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XD128F2VAA FAQ
1.How can I place an order for S912XD128F2VAA through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XD128F2VAA 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 S912XD128F2VAA reliable?
The price and inventory of S912XD128F2VAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XD128F2VAA is usually 5 days.
3.What payment methods are accepted for S912XD128F2VAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XD128F2VAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XD128F2VAA?
S912XD128F2VAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XD128F2VAA 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 S912XD128F2VAA?
For technical support, including S912XD128F2VAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XD128F2VAA requirements.
6.How does Aetrix verify that S912XD128F2VAA is sourced from the original manufacturer or authorized distributors?
All S912XD128F2VAA 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 S912XD128F2VAA meets industry standards.
7.What is the process for return or replacement of S912XD128F2VAA?
All S912XD128F2VAA units undergo pre-shipment inspection (PSI). If there is an issue with S912XD128F2VAA, 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 S912XD128F2VAA part is unused and in its original packaging.
Return procedure for S912XD128F2VAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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