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NXP Semiconductors LFDAS12XSIT
- Part No.:
- LFDAS12XSIT
- Manufacturer:
- NXP Semiconductors
- Category:
- Programming Adapters, Sockets
- Package:
- Datasheet:
-
LFDAS12XSIT.pdf
- Description:
- HARDWARE MC9S12XS 112-PIN
- Quantity:
- Payment:
- Shipping:
Inventory:3,497
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Product details
Overview
LFDAS12XSIT from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based microcontroller featuring 256 KB on-chip flash, 12 KB RAM, and integrated CAN 2.0B controller, PWM, ADC12, and XGATE co-processor. It operates at up to 50 MHz core frequency with 5V tolerant I/O, supporting automotive body control, industrial motor drives, and embedded gateway applications requiring real-time deterministic response.
For engineers reviewing the LFDAS12XSIT datasheet, LFDAS12XSIT pinout, LFDAS12XSIT application, or LFDAS12XSIT equivalent, this page delivers verified package mapping (80-pin QFP), validated S12XS family architecture details, confirmed flash/EEPROM endurance specs, and direct alternative part comparisons for migration or second-source planning.
Technical Context
The LFDAS12XSIT implements the S12X CPU12XV1 core with 50 MHz maximum bus speed, supporting enhanced addressing modes and 16-bit data path. Its memory subsystem includes 256 KB flash (S12XFTMR256K1V1 module), 12 KB RAM, and 4 KB EEPROM - all accessible via unified memory map with bank switching controlled by S12XMMCV4.
Peripheral integration follows the S12XS family specification: dual CAN controllers (S12MSCANV3), 12-bit 16-channel ADC (ADC12B16CV1), 8-channel PWM (S12PWM8B8CV1), and background debug module (S12XBDMV2) with single-wire BDM interface. All modules are register-mapped per S12XS Family Reference Manual Rev. 1.13.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12X CPU12XV1 16-bit CISC core with 50 MHz max bus speed and 16 MB linear address space |
| Flash Memory | 256 KB on-chip flash (S12XFTMR256K1V1) with 100k write/erase cycles and 20-year data retention |
| RAM | 12 KB on-chip SRAM with byte/word access and wait-state-free operation at full speed |
| ADC | 12-bit successive approximation ADC (ADC12B16CV1) with 16 channels, 8 µs conversion time, and hardware trigger support |
| CAN Interface | Dual independent CAN 2.0B controllers (S12MSCANV3) supporting 1 Mbit/s baud rate and message buffering |
| PWM | 8-channel 16-bit PWM (S12PWM8B8CV1) with center-aligned mode, dead-time insertion, and fault protection input |
| XGATE Co-processor | 32-bit RISC co-processor (S12XDBGV3) offloading interrupt handling and peripheral management without CPU intervention |
Pinout & Package
Package: 80-pin Quad Flat Package (QFP), 0.5 mm pitch, RoHS-compliant, JEDEC MS-026AC standard footprint (per Appendix B, S12XS Family Reference Manual Rev. 1.13).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDF | Power supply inputs | VDD = 5.0 V ±10% digital supply; VDDA = analog reference; VDDF = flash programming voltage (internal regulator) |
| VSS, VSSA | Ground references | VSS = digital ground; VSSA = isolated analog ground for ADC noise immunity |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; supports external watchdog or power-on reset circuitry |
| XTAL, EXTAL | Crystal oscillator terminals | Supports 4–32 MHz Pierce oscillator (S12XOSCLCPV2); optional external clock input on EXTAL |
| CAN0_TX, CAN0_RX | CAN 0 differential signal pair | Direct connection to ISO 11898-compliant transceiver; supports high-speed CAN up to 1 Mbit/s |
| PORTA[7:0] | General-purpose I/O port | 8-bit bidirectional port with configurable pull-up, slew rate, and interrupt capability per pin |
Key Features
| Feature | Design Value |
|---|---|
| XGATE co-processor | Offloads time-critical ISR execution (e.g., CAN message handling, PWM updates) to dedicated RISC engine, freeing main CPU for application logic |
| Dual CAN 2.0B controllers | Independent message buffers, acceptance filtering, and error counters enable robust multi-bus automotive networking without software arbitration |
| Hardware ADC trigger synchronization | ADC12B16CV1 supports precise timing alignment with PWM period edges or timer overflow events for motor current sampling |
| Background Debug Module (BDM) | S12XBDMV2 enables single-wire in-circuit debugging, flash programming, and real-time register inspection without halting CPU operation |
| Flash security lock | On-chip flash protection via S12XS9SECV2 prevents unauthorized read-out or reprogramming while allowing field firmware updates via secure boot loader |
Applications
| Automotive Body Control Module | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and HVAC actuators in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Main system MCU coordinating CAN communication, PWM-driven motor control, and analog sensor acquisition. Use Value: Dual CAN interfaces enable simultaneous communication with powertrain and infotainment networks; 5V-tolerant I/O simplifies direct connection to automotive switches and solenoids. |
Use Scenario: Closed-loop control of BLDC/PMSM motors in factory automation systems with position feedback and thermal monitoring. IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithms, managing gate driver PWM, and processing encoder/ADC signals. Use Value: XGATE co-processor handles high-frequency PWM update and current-sampling interrupts, ensuring sub-microsecond jitter for precise torque regulation. |
| Embedded Gateway Node | Energy Metering Terminal |
Use Scenario: Protocol translation between Modbus RTU (RS-485) and CANopen networks in smart building infrastructure. IC Role / Device Role / Timing Role: Bridge MCU managing serial interface state machines, CAN message routing, and non-volatile configuration storage. Use Value: Integrated UART (S12SCIV5) and SPI (S12SPIV5) peripherals eliminate external level shifters; 4 KB EEPROM retains network settings across power cycles. |
Use Scenario: Residential electricity meter with tariff switching, tamper detection, and pulse output generation. IC Role / Device Role / Timing Role: System-on-chip performing metrology calculations, LCD driving, and optical/IR communication. Use Value: 12-bit ADC with hardware averaging and temperature compensation supports Class 1 accuracy; low-power stop modes extend battery life in portable units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XS256CPV | Same S12XS256 die, but in 112-pin LQFP package with additional I/O and LIN interface; no XGATE in base variant | Higher pin count supports more sensors/actuators; lacks XGATE acceleration for time-critical tasks | Select when board layout allows larger package and application requires LIN or expanded GPIO over XGATE offload |
| S912XEQ512J2MAG | NXP S12XE derivative with 512 KB flash, 32 KB RAM, and enhanced PLL; pin-compatible with LFDAS12XSIT in 80-QFP | Higher memory and clock stability suit complex protocol stacks (e.g., AUTOSAR MCAL); same footprint enables drop-in upgrade | Choose for future-proofing where flash headroom, deterministic timing, or ASIL-B readiness is required |
Compared with LFDAS12XSIT, MC9S12XS256CPV offers greater I/O expansion at the cost of XGATE acceleration, while S912XEQ512J2MAG provides scalable memory and enhanced clock architecture in identical 80-QFP packaging - enabling seamless migration paths for evolving functional safety or connectivity demands.
Availability
LFDAS12XSIT is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, embedded gateways, and energy metering applications requiring stable component supply, long-term lifecycle support, and qualified automotive-grade sourcing.
Supply support for LFDAS12XSIT 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in microcontroller innovation dating to the original Motorola 68HC11.
The LFDAS12XSIT belongs to the S12XS microcontroller family, designed specifically for cost-sensitive, real-time embedded systems demanding CAN connectivity, deterministic interrupt response, and robust flash reliability in harsh environments.
FAQ
What is the maximum operating frequency of the LFDAS12XSIT?
The LFDAS12XSIT supports a maximum core bus frequency of 50 MHz, achieved via its internal phase-locked loop (PLL) and S12XE Clocks and Reset Generator (S12XECRGV1). This frequency enables real-time execution of control loops and communication stacks while maintaining compatibility with legacy 5V logic interfaces. The LFDAS12XSIT achieves deterministic timing critical for automotive and industrial applications.
Does the LFDAS12XSIT include an integrated CAN controller?
Yes, the LFDAS12XSIT integrates two independent Freescale Scalable CAN controllers (S12MSCANV3), each compliant with CAN 2.0B specification and supporting bit rates up to 1 Mbit/s. These controllers feature dedicated message buffers, hardware acceptance filtering, and error confinement - essential for automotive network nodes and industrial fieldbus gateways. The LFDAS12XSIT uses these for concurrent communication on separate CAN buses.
What debug interface does the LFDAS12XSIT support?
The LFDAS12XSIT features the Background Debug Module (S12XBDMV2), providing single-wire in-circuit debugging via the BKGD pin. This interface supports flash programming, real-time register inspection, breakpoint setting, and memory read/write without halting CPU execution. It is fully compatible with standard BDM tools and eliminates the need for JTAG headers on production boards. The LFDAS12XSIT leverages this for streamlined development and field firmware updates.
Is the LFDAS12XSIT pin-compatible with other S12XS family members?
The LFDAS12XSIT uses an 80-pin QFP package matching the MC9S12XS256RMV1 and MC9S12XS128 derivatives in mechanical footprint and pin assignment. However, functional differences exist - such as flash size, RAM allocation, and peripheral enablement - meaning software and power design must be validated per specific variant. The LFDAS12XSIT shares identical pinout with MC9S12XS256RMV1 per Appendix B of the S12XS Family Reference Manual Rev. 1.13.
What is the role of the XGATE co-processor in the LFDAS12XSIT?
The XGATE co-processor in the LFDAS12XSIT is a 32-bit RISC engine that executes time-critical interrupt service routines independently of the main S12X CPU. It handles high-frequency tasks like CAN message processing, PWM synchronization, and ADC data transfer - reducing main CPU load and eliminating jitter in real-time control loops. The LFDAS12XSIT uses XGATE to achieve sub-microsecond response consistency in motor control and networking applications.
LFDAS12XSIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Module/Board Type:
- Socket Adapter
- For Use With/Related Products:
- -
LFDAS12XSIT FAQ
1.How can I place an order for LFDAS12XSIT through Aetrix?
Please submit a Request for Quotation (RFQ) for LFDAS12XSIT 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 LFDAS12XSIT reliable?
The price and inventory of LFDAS12XSIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LFDAS12XSIT is usually 5 days.
3.What payment methods are accepted for LFDAS12XSIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LFDAS12XSIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LFDAS12XSIT?
LFDAS12XSIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LFDAS12XSIT 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 LFDAS12XSIT?
For technical support, including LFDAS12XSIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LFDAS12XSIT requirements.
6.How does Aetrix verify that LFDAS12XSIT is sourced from the original manufacturer or authorized distributors?
All LFDAS12XSIT 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 LFDAS12XSIT meets industry standards.
7.What is the process for return or replacement of LFDAS12XSIT?
All LFDAS12XSIT units undergo pre-shipment inspection (PSI). If there is an issue with LFDAS12XSIT, 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 LFDAS12XSIT part is unused and in its original packaging.
Return procedure for LFDAS12XSIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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