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NXP Semiconductors S912XEQ512ACAL
- Part No.:
- S912XEQ512ACAL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
S912XEQ512ACAL.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,236
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Product details
Overview
S912XEQ512ACAL from NXP Semiconductors (formerly Freescale) is a 16-bit automotive microcontroller featuring the CPU12X core, 512KB on-chip Flash memory with ECC, 32KB RAM, and integrated MSCAN, XGATE co-processor, and enhanced ATD converter. It targets body control modules and gateway applications requiring CAN/LIN communication, PWM-driven power actuation, and robust system integrity at -40°C to 125°C.
For engineers reviewing the S912XEQ512ACAL datasheet, S912XEQ512ACAL pinout, S912XEQ512ACAL application, or S912XEQ512ACAL equivalent, key selection criteria include its 144-pin LQFP package, dual ATD converters (8ch each), 4 CAN modules, 6 SCI interfaces, and MPU-enabled memory protection for ASIL-B–aligned automotive systems.
Technical Context
The S912XEQ512ACAL implements a 16-bit CPU12X core running at up to 50 MHz bus frequency, paired with an independent XGATE RISC co-processor operating at 100 MHz. Its memory subsystem includes 512KB Flash with 1-bit error correction/2-bit detection, 32KB RAM, and 2KB emulated EEPROM backed by 32KB D-Flash.
Peripherals include four MSCAN modules compliant with CAN 2.0A/B (up to 1 Mbps), six SCI interfaces supporting LIN master/slave via XGATE offload, dual 8-channel ATD converters with 3 µs 10-bit conversion time, and an 8-channel PWM module with emergency shutdown input - all operating across extended temperature range without external wait states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12X 16-bit core, instruction-set compatible with MC9S12 except five removed fuzzy instructions; enables legacy code reuse with enhanced addressing. |
| Flash Memory | 512KB with ECC (64 data + 8 syndrome bits); provides single-bit fault correction and double-bit fault detection for ASIL-B functional safety compliance. |
| RAM | 32KB SRAM; supports real-time XGATE data movement and CPU execution without wait states across full bus frequency range. |
| CAN Interfaces | 4 × MSCAN modules; each supports standard/extended frames, 0–8 byte payloads, programmable bit rates up to 1 Mbps, and FULL-CAN capability when offloaded to XGATE. |
| ATD Converter | 2 × independent ATD modules, 8 channels each, 8/10/12-bit resolution, 3 µs 10-bit conversion time; enables simultaneous sensor acquisition in body control applications. |
| XGATE Co-processor | Programmable in C, 100 MIPS RISC performance; handles CAN/LIN protocol stacks, SPI transfers, and interrupt servicing independently of CPU to reduce latency and load. |
| Operating Temperature | -40°C to 125°C; qualified for under-hood automotive environments including body control units and gateway ECUs. |
| Package | 144-pin LQFP, 20×20 mm, 0.5 mm pitch; supports non-multiplexed external bus interface for glue-less expansion with asynchronous memories. |
Pinout & Package
Package: 144-pin LQFP (20×20 mm, 0.5 mm pitch), case number 918-03. Supports non-multiplexed external bus interface and 119 general-purpose I/O pins with configurable pull-up/down and drive strength.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Separate analog (VDDA), core (VDD), and PLL (VDDPLL) rails enable optimized EMC filtering and noise isolation for mixed-signal operation. |
| RESET | Active-low reset input | Accepts external reset assertion; integrates with internal POR, COP watchdog, and low-voltage detect circuitry for fail-safe startup. |
| CRGCLK, EXTAL, XTAL | Oscillator interface | Supports 4–16 MHz crystal (Pierce mode) or 2–40 MHz crystal (full-swing mode); feeds CRG for IPLL-based clock generation with spread-spectrum option. |
| CAN0_TX, CAN0_RX | CAN0 differential transceiver interface | Direct connection to external CAN transceiver; supports high-speed (up to 1 Mbps) and fault-tolerant physical layer implementation. |
| SCI0_TX, SCI0_RX | SCI0 UART interface | Configurable for LIN physical layer (with optional IrDA RZI format); used for diagnostic communication or LIN slave node control. |
| ATD0[0:7] | Analog input channels | Eight dedicated analog inputs for first ATD module; support external sensor signals (e.g., temperature, voltage, current) with programmable sampling triggers. |
| PWM0–PWM7 | PWM output channels | Eight 8-bit or four 16-bit PWM outputs; support center/left-aligned waveforms, programmable dead time, and fast emergency shutdown for motor/light drivers. |
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 partitioning. |
| Enhanced XGATE co-processor | Offloads CAN/LIN protocol handling, SPI transfers, and timer management; reduces CPU load by >70% in gateway applications while maintaining deterministic response. |
| ECC-enabled Flash | Single-bit correction/double-bit detection per 72-bit word; eliminates silent data corruption in safety-critical firmware storage without software overhead. |
| Full-stop mode API timer | Asynchronous periodic interrupt with 0.2 ms resolution and ±10% trimmable accuracy; enables wake-up from Full Stop mode for low-power cyclic tasks (e.g., battery monitoring). |
| Dual ATD with internal oscillator | Two independent converters with internal clock source; allows analog measurement during STOP/WAIT modes - essential for always-on sensor monitoring in body controllers. |
| MSCAN with XGATE FULL-CAN | Hardware mailbox management and message filtering executed by XGATE; delivers unlimited virtual mailboxes and zero-CPU-intervention CAN reception/transmission. |
Applications
| Body Control Module | Gateway ECU |
|---|---|
|
Use Scenario: Centralized control of lighting, door locks, window lifts, and HVAC actuators in modern vehicle body electronics. IC Role / Device Role / Timing Role: Primary MCU managing PWM-driven power drivers, reading analog sensors (temperature, position), and communicating over CAN/LIN buses. Use Value: Integrated 4× CAN + 6× SCI + 8× PWM eliminates external protocol translators and discrete driver ICs, reducing BOM count and PCB area. |
Use Scenario: Protocol translation and message routing between high-speed powertrain CAN, low-speed body CAN, and LIN subnetworks. IC Role / Device Role / Timing Role: Real-time bridge MCU performing CAN-to-CAN and CAN-to-LIN forwarding with minimal latency and jitter. Use Value: XGATE-managed FULL-CAN and LIN stacks enable concurrent multi-bus traffic handling without CPU scheduling bottlenecks. |
| Smart Junction Box | Seat/Mirror Control Unit |
|
Use Scenario: Distributed power distribution and load switching in electrically centralized architectures with fused outputs and diagnostics. IC Role / Device Role / Timing Role: Safety-aware controller executing load monitoring, short-circuit detection, and thermal derating using ATD and PWM feedback loops. Use Value: MPU-enforced memory isolation separates safety-critical load-control firmware from diagnostics and communication stacks - meeting ISO 26262 ASIL-B requirements. |
Use Scenario: Localized control of power seats, mirrors, and memory functions with position sensing and motor commutation. IC Role / Device Role / Timing Role: Motion controller executing closed-loop PWM positioning, Hall-effect sensor reading, and LIN-based user interface commands. Use Value: Dual ATD converters acquire position and current simultaneously; 100 MHz XGATE handles LIN protocol timing precisely, enabling <100 µs response to switch events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XEP512ACAL | Same 144-pin LQFP package and peripheral set, but includes 8-channel ECT timer (vs. 4-channel on S912XEQ512ACAL) and 152 I/O pins (vs. 119). | Targeted at higher I/O density applications like central body controllers requiring more capture/compare resources. | Select S912XEP512ACAL only if ECT channel count or I/O pin count exceeds S912XEQ512ACAL's 4-channel ECT and 119 I/O limit. |
| MPC5604B | 32-bit Power Architecture core, 512KB Flash, 48KB RAM, 3× CAN, 4× LIN, no XGATE; supports ISO 26262 ASIL-B with lockstep cores and hardware safety monitor. | Designed for higher ASIL requirements (e.g., ASIL-B system-level certification) where dual-core redundancy and formal safety documentation are mandatory. | Choose MPC5604B when functional safety certification evidence, lockstep execution, or 32-bit compute throughput outweighs legacy S12X code compatibility and XGATE offload benefits. |
Compared with S912XEQ512ACAL, S912XEP512ACAL offers expanded timer and I/O resources in identical packaging, while MPC5604B trades XGATE efficiency and S12X toolchain continuity for certified 32-bit safety architecture - making S912XEQ512ACAL optimal for cost-sensitive, code-reuse-driven body electronics upgrades.
Availability
S912XEQ512ACAL is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, smart junction boxes, and seat/mirror control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S912XEQ512ACAL 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 back to Motorola and Freescale.
The S12XE family - including S912XEQ512ACAL - was designed specifically for automotive body electronics and gateway systems requiring enhanced system integrity (MPU, ECC), real-time co-processing (XGATE), and CAN/LIN protocol scalability without migrating to 32-bit architectures.
FAQ
What is the maximum bus frequency supported by the S912XEQ512ACAL?
The S912XEQ512ACAL supports a maximum CPU bus frequency of 50 MHz and an XGATE bus frequency of 100 MHz. These frequencies are achieved using the internal Frequency Modulated Phase Locked Loop (IPLL) clock generator, which accepts input from a 4–16 MHz crystal and requires no external components. The IPLL also supports spread-spectrum modulation to reduce electromagnetic emissions. This timing performance enables deterministic real-time response in automotive body control applications.
Does the S912XEQ512ACAL include hardware memory protection?
Yes, the S912XEQ512ACAL integrates a Memory Protection Unit (MPU) with eight configurable address regions and 8-byte granularity. It enforces no-write and no-execute attributes and generates a non-maskable interrupt on access violation. This feature supports ASIL-B–aligned software partitioning in automotive applications, allowing safety-critical control code to be isolated from communication stacks or diagnostics - a key requirement for ISO 26262 compliance in body electronics systems using the S912XEQ512ACAL.
How many CAN interfaces does the S912XEQ512ACAL support, and what protocol versions are implemented?
The S912XEQ512ACAL supports four MSCAN modules, each compliant with CAN 2.0A and CAN 2.0B protocols. These modules support both standard (11-bit) and extended (29-bit) identifier formats, data lengths from 0 to 8 bytes, and programmable bit rates up to 1 Mbps. When used with the XGATE co-processor, they deliver FULL-CAN functionality - enabling hardware-accelerated mailbox management, filtering, and transmission scheduling without CPU intervention - making the S912XEQ512ACAL well-suited for automotive gateway and body control applications.
What analog-to-digital capabilities does the S912XEQ512ACAL provide?
The S912XEQ512ACAL includes two independent ATD converters, each with eight input channels and selectable 8/10/12-bit resolution. Each converter achieves a 3 µs 10-bit single conversion time and supports external/internal triggering, signed/unsigned left/right justified results, and wake-up from low-power modes on analog comparison match. An internal oscillator enables conversions during STOP mode - critical for always-on sensor monitoring in body control applications using the S912XEQ512ACAL.
Is the S912XEQ512ACAL pin-compatible with other S12XE family members?
The S912XEQ512ACAL is pin-compatible within the 144-pin LQFP package variant of the S12XE family, including S912XEP512ACAL and S912XEQ384ACAL. All share identical mechanical footprint, power/ground pin assignments, and core peripheral signal mapping (e.g., CAN0–CAN3, SCI0–SCI5, ATD0–ATD1). However, peripheral availability differs: S912XEQ512ACAL omits the ECT module present in S912XEP512ACAL, and has fewer I/O pins (119 vs. 152). This allows drop-in replacement where ECT and I/O headroom are not required.
S912XEQ512ACAL 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:
- 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 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S912XEQ512ACAL FAQ
1.How can I place an order for S912XEQ512ACAL through Aetrix?
Please submit a Request for Quotation (RFQ) for S912XEQ512ACAL 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 S912XEQ512ACAL reliable?
The price and inventory of S912XEQ512ACAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S912XEQ512ACAL is usually 5 days.
3.What payment methods are accepted for S912XEQ512ACAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S912XEQ512ACAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S912XEQ512ACAL?
S912XEQ512ACAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S912XEQ512ACAL 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 S912XEQ512ACAL?
For technical support, including S912XEQ512ACAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S912XEQ512ACAL requirements.
6.How does Aetrix verify that S912XEQ512ACAL is sourced from the original manufacturer or authorized distributors?
All S912XEQ512ACAL 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 S912XEQ512ACAL meets industry standards.
7.What is the process for return or replacement of S912XEQ512ACAL?
All S912XEQ512ACAL units undergo pre-shipment inspection (PSI). If there is an issue with S912XEQ512ACAL, 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 S912XEQ512ACAL part is unused and in its original packaging.
Return procedure for S912XEQ512ACAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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