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NXP Semiconductors S912XEQ384BVAAR
- Part No.:
- S912XEQ384BVAAR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
S912XEQ384BVAAR.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,440
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Product details
Overview
S912XEQ384BVAAR from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 384 KB on-chip Flash memory with ECC, 24 KB RAM, and integrated MSCAN, XGATE co-processor, and enhanced ATD. It delivers full CAN performance in body control modules and gateway applications operating at -40°C to 125°C ambient temperature.
For engineers reviewing the S912XEQ384BVAAR datasheet, S912XEQ384BVAAR pinout, S912XEQ384BVAAR application, or S912XEQ384BVAAR equivalent, key selection considerations include its 144-pin LQFP package, dual ATD converters (8/10/12-bit, 16-channel), 6 MSCAN modules, XGATE coprocessor running at 100 MIPS, and Memory Protection Unit (MPU) for ASIL-B–capable system integrity.
Technical Context
The S912XEQ384BVAAR implements the CPU12X core with full MC9S12 instruction set compatibility (excluding five fuzzy instructions), 50 MHz bus frequency, and 100 MHz XGATE clock. Its architecture supports supervisor/user mode operation, MPU-enforced memory region protection (8 regions, 8-byte granularity), and ECC-enabled Flash with 1-bit correction / 2-bit detection.
It integrates six MSCAN modules compliant with CAN 2.0A/B, each supporting up to 1 Mbps bit rate, programmable acceptance filters, and FULL-CAN capability when offloaded to XGATE. The device also includes two independent ATD converters with 3 µs 10-bit conversion time, internal oscillator for Stop-mode operation, and wake-up on analog comparison match.
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 with enhanced addressing. |
| Flash Memory | 384 KB with ECC (64 data + 8 syndrome bits), supporting 1-bit fault correction and 2-bit fault detection per word - critical for automotive functional safety. |
| RAM | 24 KB SRAM, accessible without wait states, enabling deterministic real-time task execution and XGATE data buffering. |
| MSCAN Modules | 6 independent CAN controllers, each supporting CAN 2.0A/B, 1 Mbps, standard/extended frames, and FULL-CAN via XGATE offload. |
| ATD Converter | Two independent 8/10/12-bit ADCs, 16-channel multiplexer, 3 µs 10-bit conversion time, internal oscillator for low-power mode operation. |
| XGATE Co-processor | Programmable RISC engine running at 100 MIPS, servicing all peripherals without CPU intervention - enables zero-latency CAN/LIN handling. |
| Operating Temperature | -40°C to 125°C ambient, qualified for under-hood automotive applications requiring extended thermal reliability. |
| Supply Voltage | 3.3 V ±5% / 5.0 V +10%, with separate I/O and core regulator supplies to optimize EMC filtering and noise immunity. |
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, VDDIO | Power supply inputs | Dual-supply architecture: VDD powers core/regulator; VDDIO powers I/O - enables independent EMC filtering and mixed-voltage interfacing. |
| RESET | Active-low reset input | Asynchronous, debounced reset with POR/LVD integration - ensures robust startup and brown-out recovery in automotive environments. |
| XTAL, EXTAL | Crystal oscillator interface | Supports 4–16 MHz Pierce crystal (OSC_LCP); enables precise clock generation with built-in transconductance tuning for reliable start-up. |
| PORTA–PORTP | General-purpose I/O ports | Up to 119 GPIO pins (144LQFP), with configurable pull-up/down, hysteresis, and drive strength - suitable for direct sensor/actuator interfacing. |
| CAN0TX–CAN5RX | CAN transceiver signal terminals | Dedicated differential TX/RX pins per MSCAN module - eliminates software routing overhead and guarantees timing-critical CAN signal integrity. |
| ATD0[0:15], ATD1[0:15] | Analog input channels | 16 dedicated analog inputs per ATD module (32 total), mapped to physical pins with shared port functionality - enables simultaneous multi-sensor acquisition. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable address regions with 8-byte granularity, enforcing no-write/no-execute attributes and triggering non-maskable interrupts on violation - foundational for ASIL-B software partitioning. |
| Enhanced XGATE Coprocessor | 100 MIPS RISC engine executing C code, servicing all peripherals independently - frees CPU for high-level protocol stacks while maintaining deterministic latency. |
| ECC-Protected Flash | 64-bit data + 8-bit syndrome per word enables real-time single-bit correction during program execution - prevents silent data corruption in safety-critical firmware. |
| Full-CAN with XGATE Offload | 6 MSCAN modules fully managed by XGATE, supporting unlimited mailboxes and zero-CPU-intervention message handling - achieves sustained 1 Mbps CAN throughput. |
| Extended API Timer | Trimmed ±10% accuracy, 0.2 ms–13 s range, active in Full Stop mode - enables precise low-power cyclic wake-up for battery-powered body electronics. |
| Enhanced ATD with Stop-mode Operation | Internal oscillator allows 10-bit conversions during STOP mode; wake-up on analog threshold match - eliminates external wake sources in sensor monitoring. |
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 managing PWM-driven power outputs, ATD-based sensor feedback (temperature, position), and LIN communication to slave nodes. Use Value: XGATE handles LIN frame assembly/disassembly and CAN message routing, freeing CPU for application logic; MPU isolates safety-critical functions from user-space tasks. |
Use Scenario: Protocol translation between high-speed CAN FD backbone and low-speed LIN subnets in distributed vehicle architectures. IC Role / Device Role / Timing Role: Dual-bus bridge with six MSCAN modules and multiple SCI interfaces, performing real-time message filtering, prioritization, and retransmission. Use Value: FULL-CAN capability via XGATE enables concurrent handling of >100 CAN messages/sec; ECC Flash ensures firmware integrity across 15-year vehicle lifecycle. |
| Smart Junction Box | Chassis Domain Controller |
|
Use Scenario: Power distribution and load switching for front/rear lighting, wipers, and horn in compact junction box designs. IC Role / Device Role / Timing Role: High-reliability power management unit with 8-channel 16-bit PWM, ATD-based current sensing, and CAN diagnostics reporting. Use Value: 125°C rating and separate VDD/VDDIO supplies ensure stable operation near fuse boxes; EEPROM emulation provides non-volatile fault log storage. |
Use Scenario: Integration of brake light control, hazard signaling, and adaptive rear lighting with CAN/LIN coordination. IC Role / Device Role / Timing Role: Safety-aware controller executing ASIL-B–compliant diagnostics, using MPU to isolate watchdog (COP), voltage monitor, and PWM drivers. Use Value: Built-in COP watchdog with window mode and LVD interrupt enables fail-safe shutdown; ECC Flash prevents corrupted firmware from compromising lighting safety functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP768MAG | 768 KB Flash, 48 KB RAM, 208-pin MAPBGA, 8-channel ATD, 8 MSCAN modules - higher memory and I/O count. | Targeted at complex gateways requiring larger protocol stacks and more CAN/LIN channels. | Select when >384 KB Flash or >6 MSCAN modules are required; not pin-compatible due to 208-pin BGA vs. 144-pin LQFP. |
| S912XDP512J1MFA | 512 KB Flash, 32 KB RAM, 112-pin LQFP, 6 MSCAN, single ATD module - reduced analog acquisition capability. | Suitable for cost-sensitive body modules where dual ATD is unnecessary. | Choose for lower-cost BOM where 384 KB Flash suffices and second ATD is unused; shares same 112-pin footprint but differs in peripheral count. |
Compared with S912XEQ384BVAAR, MC9S12XEP768MAG offers greater memory and CAN channel capacity in a larger package, while S912XDP512J1MFA reduces analog capability and pin count for simpler applications - neither is pin-compatible, requiring PCB redesign.
Availability
S912XEQ384BVAAR is available at Aetrix Electronics and suitable for automotive body control modules, vehicle gateways, smart junction boxes, and chassis domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S912XEQ384BVAAR 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 applications, with deep heritage in automotive MCUs dating to Freescale's S12 lineage.
The S912XEQ384BVAAR belongs to the MC9S12XE family, designed specifically for ASIL-B–capable automotive body electronics requiring enhanced system integrity via MPU, ECC Flash, and XGATE offload - targeting multiplexed lighting, gateway, and junction box systems.
FAQ
What is the maximum operating temperature specification for the S912XEQ384BVAAR?
The S912XEQ384BVAAR is rated for operation from -40°C to +125°C ambient temperature, making it suitable for under-hood and high-heat automotive locations such as body control modules and junction boxes. This rating is verified per AEC-Q100 Grade 1 qualification and applies across full voltage and frequency ranges specified in the datasheet.
Does the S912XEQ384BVAAR support CAN FD or only classical CAN?
The S912XEQ384BVAAR supports only classical CAN 2.0A/B (up to 1 Mbps) via its six MSCAN modules. It does not implement CAN FD features such as flexible data-rate or extended payload. CAN FD capability requires newer S32K or MPC57xx families - the S912XEQ384BVAAR's CAN implementation is fully backward-compatible with legacy automotive networks.
How many analog-to-digital converter (ATD) modules does the S912XEQ384BVAAR include?
The S912XEQ384BVAAR includes two independent ATD modules (ATD0 and ATD1), each supporting 8/10/12-bit resolution, 16-channel multiplexing, and 3 µs 10-bit conversion time. Both modules feature internal oscillators enabling operation in STOP mode and wake-up on analog threshold match - confirmed in Table 1 and Section 3.5.10 of the MC9S12XE Family Product Brief.
Is the S912XEQ384BVAAR pin-compatible with other MC9S12XE derivatives?
The S912XEQ384BVAAR uses a 144-pin LQFP package (case no. 918-03) and shares pinout compatibility with other 144LQFP variants in the S12XE family, including S912XEQ512 and S912XEP768. However, peripheral enablement (e.g., number of ATD modules, SCI count) varies by derivative - pin mapping is identical, but unused pins may differ in function assignment per datasheet configuration.
What debug interface does the S912XEQ384BVAAR support?
The S912XEQ384BVAAR supports the Background Debug Mode (BDM) interface via a single-wire connection, enabling non-intrusive memory access, flash programming, and real-time debugging. It also includes the xDBG hardware debugger with four comparators and a 64×64-bit trace buffer - both features are documented in Sections 3.5.21 and 3.5.22 of the product brief.
S912XEQ384BVAAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12X
- Packaging:
- Tape & Reel (TR)
- 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:
- 59
- 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 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ384BVAAR FAQ
1.How can I place an order for S912XEQ384BVAAR through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ384BVAAR 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 S912XEQ384BVAAR reliable?
The price and inventory of S912XEQ384BVAAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ384BVAAR is usually 5 days.
3.What payment methods are accepted for S912XEQ384BVAAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ384BVAAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ384BVAAR?
S912XEQ384BVAAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ384BVAAR 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 S912XEQ384BVAAR?
For technical support, including S912XEQ384BVAAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ384BVAAR requirements.
6.How does Aetrix verify that S912XEQ384BVAAR is sourced from the original manufacturer or authorized distributors?
All S912XEQ384BVAAR 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 S912XEQ384BVAAR meets industry standards.
7.What is the process for return or replacement of S912XEQ384BVAAR?
All S912XEQ384BVAAR units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ384BVAAR, 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 S912XEQ384BVAAR part is unused and in its original packaging.
Return procedure for S912XEQ384BVAAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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