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NXP Semiconductors MC9S12XEQ384CAL
- Part No.:
- MC9S12XEQ384CAL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
MC9S12XEQ384CAL.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:307
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Product details
Overview
MC9S12XEQ384CAL from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based automotive microcontroller featuring 384 KB on-chip flash memory, 24 KB RAM, and integrated XGATE coprocessor for offloading real-time I/O tasks. It operates at up to 50 MHz core frequency, supports CAN 2.0B and LIN 2.1 protocols, and targets engine control units (ECUs), transmission controllers, and body electronics modules requiring ASIL-B functional safety compliance.
For engineers reviewing the MC9S12XEQ384CAL datasheet, MC9S12XEQ384CAL pinout, MC9S12XEQ384CAL application, or MC9S12XEQ384CAL equivalent, key selection criteria include its 112-pin LQFP package, dual CAN controller with time-triggered communication support, 12-bit ADC with 16 channels and hardware trigger synchronization, and S12X CPU with enhanced interrupt latency handling for deterministic real-time response in powertrain systems.
Technical Context
The MC9S12XEQ384CAL implements the S12X CPU core with 16-bit data path, 24-bit address space, and instruction set backward compatibility with legacy HCS12 devices. Its memory subsystem includes 384 KB flash organized in 2 KB sectors with EEPROM emulation capability, 24 KB SRAM, and Memory Protection Unit (MPU) supporting region-based access control.
Peripheral integration includes two MSCAN modules, four SCI interfaces, three SPI ports, two IIC buses, 16-channel 12-bit ADC with configurable sample-and-hold timing, and an Enhanced Capture Timer (ECT) with 8 input capture/compare channels plus PWM generation. The XGATE coprocessor handles high-frequency I/O servicing independently of the main CPU.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | S12X 16-bit CPU with 24-bit addressing and 50 MHz max bus clock - enables deterministic real-time execution and large memory mapping for complex ECU firmware. |
| Flash Memory | 384 KB on-chip flash with 2 KB sector erase and 100K write/erase cycles - supports robust over-the-air (OTA) update partitioning and EEPROM emulation. |
| RAM | 24 KB on-chip SRAM with parity protection - provides fault-tolerant data storage for critical runtime variables and stack operations. |
| ADC | 12-bit resolution, 16-channel SAR ADC with hardware-synchronized sampling and programmable conversion sequence - meets precision sensor acquisition requirements in engine air/fuel ratio control. |
| CAN Interfaces | Two independent MSCAN 2.0B modules with time-triggered communication support and message buffering - enables redundant CAN networks for safety-critical powertrain communication. |
| XGATE Coprocessor | Dedicated RISC engine with 2 KB local RAM and autonomous peripheral servicing - reduces main CPU load by up to 40% during high-frequency I/O handling (e.g., PWM edge alignment, CAN message filtering). |
| Package | 112-pin LQFP (16 × 16 mm, 0.4 mm pitch) - supports industrial-grade thermal dissipation and standard surface-mount assembly for automotive PCBs. |
Pinout & Package
MC9S12XEQ384CAL is housed in a 112-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad, compliant with JEDEC MO-207AB. Pin assignments follow the S12XE family standard layout documented in Appendix B of the MC9S12XE-Family Reference Manual Rev. 1.25.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power supply inputs | Separate digital (VDD), analog (VDDA), and PLL (VDDPLL) rails enable noise isolation for ADC accuracy and clock stability. |
| VSS, VSSA, VSSPLL | Ground returns | Dedicated ground planes per domain minimize coupling noise and ensure signal integrity for mixed-signal operation. |
| RESET | Asynchronous reset input | Active-low input with internal pull-up; initiates cold start sequence and clears all registers and peripherals upon assertion. |
| XTAL, EXTAL | Crystal oscillator connections | Supports external 4–33 MHz crystal or ceramic resonator for primary system clock source with ±0.5% frequency tolerance. |
| CAN0_TX, CAN0_RX | CAN controller 0 differential I/O | Direct connection to external CAN transceiver; supports ISO 11898-2 physical layer signaling at up to 1 Mbps. |
| AD0[0:15] | Analog input channels | 16 dedicated pins for single-ended or differential ADC inputs; each supports programmable gain and sample-and-hold timing. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Configurable 8-region MPU with read/write/execute permissions per region - enforces software partitioning for ASIL-B compliance and prevents unintended memory corruption. |
| Background Debug Module (BDM) | Single-wire debug interface with full register visibility, breakpoint support, and non-intrusive real-time tracing - enables in-vehicle diagnostics and calibration without halting main CPU operation. |
| Enhanced Capture Timer (ECT) | 8-channel 16-bit timer with input capture, output compare, PWM generation, and quadrature decoding - supports precise crankshaft/camshaft position sensing and variable valve timing actuation. |
| Periodic Interrupt Timer (PIT) | Four independent 24-bit timers with chaining and interrupt-on-expiry - delivers deterministic scheduling for time-critical tasks such as fuel injection pulse width calculation. |
| Security Module | Flash security byte with mass erase lock and backdoor key access - prevents unauthorized firmware extraction while allowing authorized field updates via secure bootloader. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time management of fuel injection timing, ignition spark advance, and throttle position based on sensor feedback from MAP, TPS, and O2 sensors. IC Role / Device Role / Timing Role: Primary controller executing closed-loop combustion control algorithms with sub-millisecond interrupt latency and synchronized ADC sampling. Use Value: Integrated XGATE offloads CAN message handling and PWM generation, freeing the S12X CPU for complex PID calculations and enabling deterministic 10 kHz control loop execution. |
Use Scenario: Coordination of clutch engagement, gear shifting, and torque converter lockup using hydraulic pressure sensors and solenoid drivers. IC Role / Device Role / Timing Role: Central processing unit managing multi-axis motion control logic and communicating with engine ECU via dual CAN buses for torque coordination. Use Value: Dual MSCAN modules with time-triggered scheduling ensure synchronized shift events across distributed vehicle networks, meeting ISO 26262 timing constraints. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Consolidated control of lighting, door locks, window lifts, and HVAC actuators in modern vehicle architectures. IC Role / Device Role / Timing Role: High-integration MCU interfacing with LIN slave nodes and driving discrete MOSFETs for load switching. Use Value: 16-channel ADC and multiple SCI/LIN interfaces eliminate need for external interface ICs, reducing BOM count and PCB area in cost-sensitive body electronics. |
Use Scenario: Closed-loop motor control of brushless DC assist motor using rotor position feedback and torque demand signals from steering angle sensor. IC Role / Device Role / Timing Role: Safety-oriented controller performing torque computation, motor commutation, and fault monitoring with ASIL-B decomposition. Use Value: On-chip RAM with parity, MPU-enforced memory isolation, and dual CAN redundancy meet ISO 26262 Part 6 requirements for EPS functional safety architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MAL | 1 MB flash, 64 KB RAM, same 112-pin LQFP package and peripheral set - higher memory capacity but no XGATE coprocessor. | Preferred for infotainment gateway or telematics modules requiring larger code footprint but less demanding real-time I/O offload. | Select when firmware size exceeds 384 KB and XGATE acceleration is not required for I/O throughput. |
| S912XEQ512J2MAL | 512 KB flash, 32 KB RAM, identical S12X core and peripheral complement - adds JTAG debug interface and extended temperature range (-40°C to +125°C). | Suitable for under-hood applications where ambient temperature exceeds 105°C and JTAG-level debug access is needed during validation. | Choose for extreme-temperature deployments or when JTAG trace capability is mandatory for certification testing. |
Compared with MC9S12XEQ384CAL, MC9S12XEP100MAL trades XGATE acceleration for greater flash/RAM headroom, while S912XEQ512J2MAL extends operational envelope and debug capability at the cost of higher unit price and qualification lead time.
Availability
MC9S12XEQ384CAL is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply, long-term automotive lifecycle support, and ASIL-B-compliant design assurance.
Supply support for MC9S12XEQ384CAL 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 expertise in functional safety and automotive-grade reliability.
The MC9S12XEQ384CAL belongs to the S12XE family, designed specifically for cost-sensitive, high-reliability automotive powertrain and chassis control applications requiring ASIL-B compliance and deterministic real-time performance.
FAQ
What is the maximum operating frequency of the MC9S12XEQ384CAL?
The MC9S12XEQ384CAL supports a maximum bus clock frequency of 50 MHz, derived from its internal PLL which accepts input from an external crystal (4–33 MHz) or oscillator. This frequency enables deterministic execution of time-critical automotive control loops, including fuel injection and ignition timing calculations within strict ISO 26262 timing budgets. The S12X CPU core maintains consistent instruction cycle timing across this range.
Does the MC9S12XEQ384CAL support CAN FD?
No, the MC9S12XEQ384CAL integrates two legacy MSCAN 2.0B controllers compliant with ISO 11898-1:2003, supporting only classical CAN up to 1 Mbps. It does not implement CAN FD protocol features such as flexible data-rate or extended payload length. For CAN FD requirements, designers should consider NXP's S32K series or later-generation automotive MCUs.
How is flash memory protected against unauthorized access on the MC9S12XEQ384CAL?
The MC9S12XEQ384CAL implements a hardware-based security module with flash security byte programming, mass erase lock, and optional backdoor key access. Once secured, flash contents cannot be read via BDM or background debug interface without performing a full chip erase. Security configuration is persistent across power cycles and supports both development and production lockdown modes.
What debugging interfaces does the MC9S12XEQ384CAL provide?
The MC9S12XEQ384CAL features a single-wire Background Debug Module (BDM) interface compatible with standard Freescale/NXP BDM tools. It supports full register visibility, hardware breakpoints, live memory inspection, and non-intrusive real-time tracing without halting CPU execution. JTAG is not supported on this variant; that capability appears only in later S912X derivatives.
Is the MC9S12XEQ384CAL qualified for automotive use under AEC-Q100?
Yes, the MC9S12XEQ384CAL is AEC-Q100 qualified for Grade 2 (-40°C to +105°C ambient operating temperature) and manufactured in IATF 16949-certified facilities. Its qualification includes stress testing for HTOL, TC, UHAST, and ESD per AEC-Q100 Rev-G, making it suitable for under-dash automotive applications including engine, transmission, and body control modules.
MC9S12XEQ384CAL 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12XEQ384CAL FAQ
1.How can I place an order for MC9S12XEQ384CAL through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12XEQ384CAL 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 MC9S12XEQ384CAL reliable?
The price and inventory of MC9S12XEQ384CAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12XEQ384CAL is usually 5 days.
3.What payment methods are accepted for MC9S12XEQ384CAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12XEQ384CAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12XEQ384CAL?
MC9S12XEQ384CAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12XEQ384CAL 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 MC9S12XEQ384CAL?
For technical support, including MC9S12XEQ384CAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12XEQ384CAL requirements.
6.How does Aetrix verify that MC9S12XEQ384CAL is sourced from the original manufacturer or authorized distributors?
All MC9S12XEQ384CAL 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 MC9S12XEQ384CAL meets industry standards.
7.What is the process for return or replacement of MC9S12XEQ384CAL?
All MC9S12XEQ384CAL units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12XEQ384CAL, 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 MC9S12XEQ384CAL part is unused and in its original packaging.
Return procedure for MC9S12XEQ384CAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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