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NXP Semiconductors S912XEQ384F1MAL
- Part No.:
- S912XEQ384F1MAL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ384F1MAL.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
S912XEQ384F1MAL from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 384 KB on-chip Flash memory, 24 KB RAM, and integrated MSCAN, XGATE co-processor, and Memory Protection Unit (MPU). It operates at up to 50 MHz bus frequency with ECC-protected Flash and supports -40°C to 125°C ambient operation - deployed in body control modules for CAN/LIN gateway functions and power driver control.
For engineers reviewing the S912XEQ384F1MAL datasheet, S912XEQ384F1MAL pinout, S912XEQ384F1MAL application, or S912XEQ384F1MAL equivalent, key selection criteria include its 144-pin LQFP package, dual ATD converters (8/10/12-bit, 16-channel), 4 CAN modules, 6 SCI interfaces, and XGATE's 100 MIPS offload capability for real-time communication handling.
Technical Context
The S912XEQ384F1MAL implements a 16-bit CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), enhanced indexed addressing, and large data segment access independent of PPAGE. Its IPLL clock generator delivers up to 100 MHz XGATE bus frequency and supports spread-spectrum modulation for EMC reduction.
System integrity is enforced via an 8-region MPU with 8-byte granularity, Flash ECC (1-bit correction / 2-bit detection), and supervisor/user mode separation. The XGATE co-processor handles MSCAN mailbox management, LIN protocol framing, and SPI/SCI data movement without CPU intervention - enabling FULL-CAN performance and deterministic low-latency response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core compatible with MC9S12 ISA; enables legacy code reuse and deterministic real-time execution. |
| Flash Memory | 384 KB with ECC (64+8-bit syndrome); supports single-bit correction and double-bit detection for ASIL-B–capable firmware storage. |
| RAM | 24 KB SRAM; used for XGATE code/data buffers, stack, and real-time variable storage with zero-wait-state access. |
| Operating Voltage | 3.3 V ±5% to 5.0 V +10%; separate VREG and I/O supplies enable optimized EMC filtering and robust operation across battery transients. |
| Temperature Range | -40°C to 125°C; qualified for under-hood automotive body control unit (BCU) placement per AEC-Q100 Grade 0. |
| Bus Frequency | 50 MHz CPU bus / 100 MHz XGATE bus; enables 100 MIPS XGATE throughput for offloading CAN/LIN protocol stacks. |
| ADC | Two independent ATD modules, 8/10/12-bit resolution, 16-channel multiplexer, 3 µs 10-bit conversion time; supports sensor monitoring with wake-up on analog compare. |
| PWM | 8-channel × 8-bit or 4-channel × 16-bit PWM with programmable period/duty cycle, center/left-aligned outputs, and emergency shutdown input; drives lamps, fans, and solenoids directly. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). Pinout validated per MC9S12XEQ384F1MAL datasheet Rev. 7 and Freescale S12XE Reference Manual.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PORTA0–PORTA7 | General-purpose I/O / ATD channel 0–7 | Configurable digital I/O or analog inputs; supports wake-up from STOP/WAIT on edge transition or analog threshold match. |
| PORTB0–PORTB7 | General-purpose I/O / PWM output / SCI0 TX/RX | Multi-function pins supporting high-speed PWM generation and asynchronous serial communication with LIN-compliant timing. |
| PORTC0–PORTC7 | CAN0–CAN3 TX/RX / XGATE interrupt request | Dedicated differential CAN transceiver interface pins; support simultaneous 4-CAN node operation with XGATE-managed mailbox arbitration. |
| PORTD0–PORTD7 | SCI1–SCI6 / SPI0–SPI2 / IIC0–IIC1 | Shared peripheral interface pins; enable concurrent LIN master/slave, SPI flash programming, and I²C sensor communication. |
| VDD, VSS | Core power / Ground | Dual-supply design: VDD powers internal regulator and logic; separate VIO allows independent I/O voltage scaling and noise isolation. |
| RESET, IRQ, XIRQ | Reset / Maskable / Non-maskable interrupt | Hardware reset with POR/LVD detection; XIRQ provides highest-priority exception for safety-critical event capture (e.g., crash signal). |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute attributes and triggers non-maskable interrupt on violation - critical for ISO 26262 ASIL-B partitioning. |
| XGATE Co-processor | Programmable in C, runs at 100 MHz; handles all MSCAN mailbox servicing, LIN frame encoding/decoding, and SPI/SCI DMA - freeing CPU for application logic. |
| ECC-Protected Flash | 64-bit data + 8-bit syndrome per word; corrects single-bit errors and detects double-bit faults during read/write - meets UNECE R155 functional safety requirements. |
| Enhanced ATD Converter | Two independent 12-bit ATD modules with 16-channel mux, internal oscillator for Stop-mode conversion, and analog comparator wake-up - supports battery voltage, temperature, and position sensing. |
| MSCAN Module | 4 CAN 2.0B-compliant controllers with 1 Mbps bit rate, 5 receive buffers/FIFO, 3 prioritized transmit buffers, and 16-bit message timestamp - enables multi-bus automotive network bridging. |
| API Timer | Asynchronous periodic interrupt with ±10% trimmable accuracy, 0.2 ms–13 s range, and operation in Full Stop mode - provides fail-safe cyclic watchdog and task scheduling without crystal dependency. |
Applications
| Body Control Module (BCM) | Gateway Controller |
|---|---|
|
Use Scenario: Centralized vehicle body electronics managing door locks, lighting, wipers, and HVAC via LIN slave nodes and CAN backbone. IC Role / Device Role / Timing Role: Primary MCU executing BCM application firmware while XGATE handles LIN protocol framing and CAN message routing. Use Value: Reduces CPU load by >70% during LIN polling cycles and enables deterministic <100 µs CAN message latency for critical alerts (e.g., hazard light activation). |
Use Scenario: In-vehicle network bridge between high-speed powertrain CAN and low-speed body LIN subsystems. IC Role / Device Role / Timing Role: Dual-role controller: MSCAN modules interface with CAN buses; SCI modules implement LIN physical layer with XGATE-managed timing. Use Value: Eliminates need for external protocol translator ICs; supports concurrent 4-CAN + 6-LIN channels with hardware-accelerated message filtering and forwarding. |
| Smart Power Distribution Unit | Seat/Mirror Control Module |
|
Use Scenario: Replacing electromechanical relays with solid-state MOSFET drivers controlled via PWM and monitored via ATD feedback. IC Role / Device Role / Timing Role: Real-time power switch controller using 8-channel PWM outputs and 12-bit ATD for current/voltage sensing. Use Value: Enables precise current limiting (<±5% error), overtemperature shutdown, and diagnostic logging without external ADC or op-amps. |
Use Scenario: Occupant-position-aware seat/mirror adjustment using potentiometer inputs, motor PWM control, and EEPROM-stored user profiles. IC Role / Device Role / Timing Role: Integrated controller with emulated EEPROM (4 KB D-Flash), ATD for analog position sensing, and PWM for bidirectional DC motor drive. Use Value: Stores 32+ user presets in protected D-Flash with ECC; performs smooth 16-bit PWM motor ramping using on-chip timers and dead-time insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEQ512F1MAL | 512 KB Flash, 32 KB RAM, same 144-LQFP package and peripheral set; higher memory for complex diagnostics and OTA update staging. | Supports larger AUTOSAR BSW stacks and dual-bank firmware updates; requires no PCB change but increases BOM cost. | Select when future firmware growth exceeds 384 KB or when ASW-level logging requires >24 KB RAM buffer space. |
| S912XEP100J1MAL | 1 MB Flash, 64 KB RAM, 208-MAPBGA package; adds non-multiplexed external bus and 5 CAN modules. | Enables external memory expansion and full-featured gateway with 5-CAN domain routing; requires PCB redesign due to BGA footprint. | Choose for next-gen gateways requiring >384 KB code space and external CAN FD transceivers or Ethernet MAC interfaces. |
Compared with S912XEQ384F1MAL, the MC9S12XEQ512F1MAL offers scalable memory within identical pinout and thermal envelope, while the S912XEP100J1MAL delivers architectural headroom via external bus and extra CAN - making the former ideal for incremental feature upgrades and the latter for platform-level rearchitecture.
Availability
S912XEQ384F1MAL is available at Aetrix Electronics and suitable for automotive body control modules, gateway controllers, smart power distribution units, and seat/mirror control systems requiring stable component supply across extended product lifecycles.
Supply support for S912XEQ384F1MAL 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 MCUs dating to Motorola and Freescale.
The S912XEQ384F1MAL belongs to the S12XE family - engineered specifically for ASIL-B–compliant automotive body electronics, emphasizing system integrity (MPU/ECC), real-time determinism (XGATE), and mixed-signal integration (ATD/PWM/CAN).
FAQ
What is the maximum operating temperature specification for the S912XEQ384F1MAL?
The S912XEQ384F1MAL is rated for operation from -40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 0 qualification for under-hood automotive applications. This rating is verified across all electrical parameters including Flash write/erase endurance, ADC linearity, and CAN bit timing stability - ensuring reliable function in engine compartment environments where thermal cycling exceeds 1,000 cycles.
Does the S912XEQ384F1MAL support CAN FD or only classical CAN 2.0?
The S912XEQ384F1MAL implements four classical CAN 2.0B modules (MSCAN) with bit rates up to 1 Mbps and full software compatibility with legacy S12 CAN drivers. It does not support CAN FD physical layer or protocol features such as flexible data-rate or extended data length; CAN FD capability requires migration to NXP's S32K series or standalone CAN FD transceivers paired with external protocol handling.
How is Flash memory protected against corruption in the S912XEQ384F1MAL?
The S912XEQ384F1MAL uses 64-bit data words with 8-bit ECC syndrome bits per word, enabling automatic single-bit error correction and double-bit error detection during every Flash read operation. Additionally, the Memory Protection Unit (MPU) prevents unauthorized write/execute access to Flash regions, and security bits can lock Flash against unauthenticated programming - collectively satisfying ISO 26262 ASIL-B fault containment requirements.
Can the XGATE co-processor in the S912XEQ384F1MAL execute code from Flash memory?
No - the XGATE co-processor in the S912XEQ384F1MAL can only execute code from on-chip RAM, as explicitly stated in the S12XE Family Product Brief (Rev. 9, Section 3.2 footnote 9). XGATE firmware must be loaded into RAM at startup; this design ensures deterministic zero-wait-state execution and avoids Flash access contention with the CPU during real-time peripheral servicing.
What debugging interfaces are supported by the S912XEQ384F1MAL?
The S912XEQ384F1MAL integrates a Background Debug Module (BDM) with single-wire interface for non-intrusive memory access, flash programming, and breakpoint control. It also supports xDBG hardware debug with four comparators (A–D), 64-entry trace buffer, and tag/force-type breakpoint requests - enabling full-cycle-accurate simulation and real-time trace analysis using CodeWarrior IDE and P&E Micro BDM tools.
S912XEQ384F1MAL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12X
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 50MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 91
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384F1MAL FAQ
1.How can I place an order for S912XEQ384F1MAL through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384F1MAL 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 S912XEQ384F1MAL reliable?
The price and inventory of S912XEQ384F1MAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384F1MAL is usually 5 days.
3.What payment methods are accepted for S912XEQ384F1MAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384F1MAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384F1MAL?
S912XEQ384F1MAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384F1MAL 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 S912XEQ384F1MAL?
For technical support, including S912XEQ384F1MAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384F1MAL requirements.
6.How does Aetrix verify that S912XEQ384F1MAL is sourced from the original manufacturer or authorized distributors?
All S912XEQ384F1MAL 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 S912XEQ384F1MAL meets industry standards.
7.What is the process for return or replacement of S912XEQ384F1MAL?
All S912XEQ384F1MAL units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384F1MAL, 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 S912XEQ384F1MAL part is unused and in its original packaging.
Return procedure for S912XEQ384F1MAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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