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NXP Semiconductors S912XEQ512BMAG
- Part No.:
- S912XEQ512BMAG
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
S912XEQ512BMAG.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,117
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Product details
Overview
S912XEQ512BMAG from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 512 KB on-chip Flash memory with ECC, 32 KB RAM, and integrated MSCAN, XGATE co-processor, and enhanced ATD converter. It delivers full CAN performance in body control modules and gateway applications with -40°C to 125°C operation, 50 MHz bus frequency, and Memory Protection Unit for system integrity.
For engineers reviewing the S912XEQ512BMAG datasheet, S912XEQ512BMAG pinout, S912XEQ512BMAG application, or S912XEQ512BMAG equivalent, key selection criteria include its 144-pin LQFP package, 4 CAN modules, 6 SCI interfaces, 3 SPI modules, 8-channel PWM, and support for XGATE-accelerated LIN/CAN protocol stacks in automotive ECU designs.
Technical Context
The S912XEQ512BMAG 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 XGATE co-processor runs at 100 MIPS, handles all peripheral interrupts-including full CAN mailbox management-and operates at twice the bus frequency (100 MHz) while offloading CPU tasks.
System integrity is enforced via an 8-region Memory Protection Unit (MPU) with 8-byte granularity, Flash ECC providing 1-bit correction/2-bit detection, and dual-voltage regulator architecture separating I/O and core supplies for optimized EMC filtering. The device supports IPLL clock generation with spread-spectrum modulation and fast wake-up from STOP mode using internal oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, compatible with MC9S12 ISA (no MEM/WAV/REV instructions), enabling legacy code reuse without recompilation. |
| Flash Memory | 512 KB with 64+8 ECC bits per word; enables single-bit error correction and double-bit fault detection during execution and programming. |
| RAM | 32 KB on-chip SRAM; supports zero-wait-state access for real-time control loops and XGATE data buffering. |
| Bus Frequency | 50 MHz maximum CPU bus frequency; ensures deterministic timing for automotive ASIL-B–level functions. |
| CAN Modules | 4 independent MSCAN modules (CAN0, CAN1, CAN2, CAN4); supports concurrent high-speed (1 Mbps) CAN communication across multiple vehicle domains. |
| SCI Interfaces | 6 serial communication interfaces; provides dedicated LIN master/slave capability on SCI0–SCI5 with break-detect and IrDA RZI support. |
| XGATE Co-processor | Programmable in C, 100 MIPS RISC engine; handles full CAN mailbox servicing and LIN frame processing without CPU intervention. |
| Operating Temp | -40°C to 125°C ambient; qualified for under-hood automotive applications including body control units and gateways. |
Pinout & Package
Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch, case no 918-03). Pinout validated per MC9S12XE Data Sheet "Port Availability by Package Option" table for 144LQFP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDX | Power supply inputs | Dedicated 5V supplies for digital logic (VDD), analog (VDDA), and XGATE (VDDX); enable independent EMC filtering and noise isolation. |
| VSS, VSSA, VSSX | Ground terminals | Separate ground returns for digital (VSS), analog (VSSA), and XGATE (VSSX); minimize coupling between signal domains. |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; triggers POR, COP timeout, or MPU violation recovery sequences. |
| MODB, MODA | Mode selection pins | Configure boot source (internal Flash vs. external bus) and debug interface (BDM enabled/disabled) at power-on. |
| XTAL, EXTAL | Crystal oscillator connections | Support 4–16 MHz Pierce crystal; feed OSC_LCP module for stable clock generation with low-jitter IPLL multiplication. |
| CAN0TX, CAN0RX | CAN0 differential transceiver I/O | Direct connection to external CAN transceiver; supports ISO 11898-2 compliant physical layer signaling. |
| SCI0TX, SCI0RX | LIN/SCI0 serial interface | Configurable as LIN master/slave; supports break-detect, sync-field generation, and auto-baud detection per LIN 2.0 spec. |
| PWM0–PWM7 | Pulse-width modulator outputs | 8-channel 8-bit PWM or 4-channel 16-bit PWM; drive solenoids, LEDs, and motor drivers with center/left-aligned output and emergency shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity; enforces no-write/no-execute policies and triggers non-maskable interrupt on violation-critical for ASIL-B software partitioning. |
| Flash ECC | 64 data + 8 syndrome bits per word; corrects single-bit errors and detects double-bit faults during read/program/erase-ensures functional safety compliance. |
| XGATE Co-processor | 100 MIPS RISC engine programmable in C; services all peripherals including MSCAN mailboxes and LIN frames, freeing CPU for application logic. |
| Enhanced ATD Converter | Two independent 10-bit ATD modules (8-channel each); achieves 3 µs conversion time and supports wake-up on analog threshold crossing in low-power modes. |
| IPLL Clock Generator | Internally filtered phase-locked loop with spread-spectrum modulation; eliminates external filter components and reduces radiated emissions in EMI-sensitive environments. |
| Background Debug (BDM) | Single-wire interface supporting non-intrusive memory access, flash programming, and security lock/unlock-enables field firmware updates and diagnostics. |
Applications
| Body Control Module (BCM) | Vehicle Gateway |
|---|---|
Use Scenario: Centralized control of lighting, door locks, window lifts, and HVAC actuators in modern passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing body control logic, managing CAN/LIN communications, and driving PWM-controlled loads. Use Value: XGATE offloads CAN message handling and LIN scheduling, enabling deterministic response to switch inputs and sensor events within 50 µs. |
Use Scenario: Protocol translation and message routing between high-speed CAN (powertrain), low-speed CAN (body), and LIN (sensors/actuators). IC Role / Device Role / Timing Role: Real-time gateway controller with dual CAN controllers and six SCI ports configured as LIN masters. Use Value: 4 CAN modules and XGATE-accelerated LIN stacks allow concurrent handling of >32 network endpoints with sub-millisecond latency. |
| Roof Module Controller | Seat Control Unit |
Use Scenario: Integrated sunroof, panoramic roof, and ambient lighting control with position feedback and anti-pinch safety logic. IC Role / Device Role / Timing Role: Dedicated MCU interfacing with potentiometers, Hall sensors, and H-bridge drivers via ATD and PWM modules. Use Value: 10-bit ATD with 3 µs conversion and hardware-triggered wake-up enables precise position tracking and immediate stop command execution. |
Use Scenario: Motorized seat adjustment with memory presets, heating elements, and occupancy detection via thermistors and pressure sensors. IC Role / Device Role / Timing Role: Safety-critical controller managing dual H-bridges, thermal monitoring, and CAN-based configuration storage. Use Value: MPU-enforced memory isolation separates seat motion control code from heater driver routines, satisfying ASIL-B partitioning requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MAG | 1 MB Flash, 64 KB RAM, 5 CAN modules, 208-pin MAPBGA; higher I/O count (152 pins) and extended peripheral set. | Targeted at flagship body controllers requiring larger code footprint and more CAN/LIN channels. | Select when scaling beyond 512 KB Flash or needing additional CAN0–CAN4 and TIM/PIT resources. |
| MC9S12XEQ384MAG | 384 KB Flash, 24 KB RAM, same 144-pin LQFP package and peripheral complement (4 CAN, 6 SCI, 3 SPI). | Suitable for cost-optimized body modules with reduced feature sets (e.g., no rear-seat controls or ambient lighting). | Choose for BOM cost reduction where 512 KB Flash headroom is unnecessary and software size remains <384 KB. |
Compared with S912XEQ512BMAG, MC9S12XEP100MAG offers double Flash capacity and expanded I/O for complex gateways, while MC9S12XEQ384MAG retains identical pinout and peripheral count but trades 128 KB Flash for lower unit cost-making it ideal for derivative variants of the same platform.
Availability
S912XEQ512BMAG is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, roof controllers, and seat control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S912XEQ512BMAG 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's original 68HC11.
The S912XEQ512BMAG belongs to the MC9S12XE family, designed specifically for automotive body electronics requiring ASIL-B–compliant system integrity, real-time CAN/LIN networking, and robust operation from -40°C to 125°C.
FAQ
What is the operating voltage range for the S912XEQ512BMAG?
The S912XEQ512BMAG operates across a wide single supply voltage range of 3.3 V ±5% to 5.0 V +10%, supporting both 3.3 V and 5 V automotive systems. Its dual-voltage regulator architecture separates core, analog, and XGATE supplies to maintain stability and reduce noise coupling during transient load conditions.
Does the S912XEQ512BMAG support CAN FD or only classical CAN?
The S912XEQ512BMAG supports only classical CAN 2.0A/B protocols-not CAN FD. Its five MSCAN modules (four implemented in this variant) provide software-compatible CAN 2.0A/B operation up to 1 Mbps, with standard/extended identifiers, 0–8 byte payloads, and hardware FIFOs-but lack the bit-rate switching and extended data length features of CAN FD.
How many XGATE interrupt levels does the S912XEQ512BMAG support?
The S912XEQ512BMAG supports two XGATE interrupt levels, enabling prioritized servicing of high-criticality tasks such as CAN message transmission and LIN frame synchronization, while lower-priority background tasks like sensor polling run at the second level-ensuring deterministic real-time behavior without CPU involvement.
Is the S912XEQ512BMAG pin-compatible with earlier S12XD family devices?
Yes, the S912XEQ512BMAG is pin-compatible with corresponding S12XD derivatives in the same 144-pin LQFP package. This allows drop-in replacement in existing designs, preserving PCB layout while upgrading to enhanced features including MPU, Flash ECC, and improved XGATE interrupt handling-subject to minor configuration register updates.
What debug interface does the S912XEQ512BMAG use, and is it supported by modern tools?
The S912XEQ512BMAG uses the Background Debug Mode (BDM) single-wire interface, fully supported by NXP's S32DS IDE, legacy CodeWarrior for S12X, and third-party tools from P&E Micro and iSystem. BDM enables non-intrusive flash programming, real-time memory inspection, and hardware breakpoints-even during low-power STOP mode execution.
S912XEQ512BMAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-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:
- 119
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 24x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512BMAG FAQ
1.How can I place an order for S912XEQ512BMAG through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512BMAG 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 S912XEQ512BMAG reliable?
The price and inventory of S912XEQ512BMAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512BMAG is usually 5 days.
3.What payment methods are accepted for S912XEQ512BMAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512BMAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512BMAG?
S912XEQ512BMAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512BMAG 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 S912XEQ512BMAG?
For technical support, including S912XEQ512BMAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512BMAG requirements.
6.How does Aetrix verify that S912XEQ512BMAG is sourced from the original manufacturer or authorized distributors?
All S912XEQ512BMAG 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 S912XEQ512BMAG meets industry standards.
7.What is the process for return or replacement of S912XEQ512BMAG?
All S912XEQ512BMAG units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512BMAG, 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 S912XEQ512BMAG part is unused and in its original packaging.
Return procedure for S912XEQ512BMAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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