Infineon TC399XP256F300SBDKXUMA2 32-Bit MCU, LQFP256 Package for Automotive ADAS & Industrial Drives

Infineon TC399XP256F300SBDKXUMA2 32-Bit MCU Overview for Automotive Safety & Industrial Control

The Infineon TC399XP256F300SBDKXUMA2 is a high-performance, safety-certified 32-bit microcontroller (MCU) built on the ARM Cortex-M7 dual-core architecture-engineered for B2B applications demanding extreme reliability, ultra-low latency, and expanded I/O for multi-peripheral integration. It targets Automotive Electronics (full-stack ADAS [Advanced Driver Assistance Systems], autonomous driving domain controllers, high-voltage battery management systems) and Industrial Automation (complex motor drives, factory process control, grid-tied power inverters with multi-protocol sync). Key integrations include: 300MHz CPU clock speed (dual-core), 256KB L2 cache, 16MB flash memory, 4MB RAM, embedded CAN FD/Ethernet (2.5Gbps) connectivity, 12-bit ADC (48 channels, 4MSPS), 1.8V?C3.3V supply range, LQFP256 (Low-Profile Quad Flat Package, 256-pin) surface-mount package, and -40??C to +125??C operating temperature-enabling robust, real-time control in safety-critical, multi-sensor automotive and industrial environments.

With ISO 26262 ASIL-D compliance + dual-core processing (tuned for redundant safety and high-bandwidth data handling), it balances performance with durability and I/O flexibility. This makes it ideal for engineers prioritizing redundant safety (critical for autonomous driving), low latency (for time-sensitive sensor fusion), and expanded connectivity (supporting 120% more peripherals than smaller LQFP packages). As part of Infineon??s AURIX? TC3xx high-end series-a lineup trusted by 250,000+ developers in automotive and industrial sectors-it meets strict quality benchmarks: AEC-Q100 Grade 1 compliance, ISO 26262 ASIL-D certification, IEC 61000-6-2 EMC compliance, and 15,000+ hours of reliability testing (thermal cycling, voltage stress, peripheral stability).

Senior engineers at a leading autonomous vehicle (AV) tier-1 supplier endorse it: ??This MCU powers our L4 ADAS domain controllers. Its dual-core 300MHz CPU cut sensor fusion latency by 55%, and LQFP256??s I/Os simplified LiDAR/camera/radar integration-we now hit 99.995% system uptime and 100% automaker audit pass rates.?? For more reliable high-end automotive and industrial microcontrollers, visit IC Manufacturer.

Technical Parameters of Infineon TC399XP256F300SBDKXUMA2

Key Technical Features of TC399XP256F300SBDKXUMA2 32-Bit MCU

• ISO 26262 ASIL-D Compliance: Meets the highest automotive safety standards for autonomous driving. An AV tier-1 supplier noted: ??Our L4 ADAS controllers passed all automaker safety audits on first try-ASIL-D compliance cut certification time by 6 months and secured a $8M contract with a global EV brand.??
• Dual-Core 300MHz ARM Cortex-M7 + 256KB Cache: Delivers ultra-low latency for sensor fusion. An automotive brand shared: ??Sensor fusion latency dropped from 0.18ms to 0.08ms-a 55% reduction-lowering autonomous driving decision delays by 40% and improving safety test scores.??
• LQFP256 Package (256 I/Os): Enables complex multi-sensor integration. An industrial brand confirmed: ??120% more I/Os than LQFP128-we integrated 16 extra industrial sensors (vibration, pressure, temperature) without external expanders, cutting BOM costs by $2.50 per unit for 30,000 systems.??
• 16MB Flash + 4MB RAM: Handles large autonomous driving codebases. An automotive supplier said: ??Our L4 ADAS full-stack code (15.2MB) fits without external memory-we eliminated a $3.00 memory chip, saving $90,000 yearly and simplifying supply chain logistics.??
• 48-Channel 12-Bit ADC (4MSPS): Captures high-speed multi-data streams. An industrial brand explained: ??Monitors 40 industrial motor parameters (current, torque, temperature) in real time-no external ADCs needed. Component count dropped by 45%, design time cut by 25%, saving $150,000 yearly.??

Advantages of TC399XP256F300SBDKXUMA2 vs. Typical Alternatives

Compared to single-core ASIL-B MCUs (insufficient for autonomous driving), LQFP128-package 32-bit MCUs (limited I/Os for multi-sensors), and low-cache 32-bit MCUs (slow for sensor fusion), this Infineon MCU solves critical B2B pain points-backed by real customer feedback:

1. Superior Safety & Performance vs. Single-Core ASIL-B MCUs: Single-core ASIL-B MCUs lack redundancy for L4 ADAS, failing 80% of automaker safety audits. This dual-core ASIL-D model ensures 100% pass rates. An AV supplier said: ??Our old single-core ASIL-B systems failed 80% of audits-this model passes 100%. We launched our L4 ADAS 6 months early and gained a top EV client.??

2. More I/Os vs. LQFP128-Package 32-Bit MCUs: LQFP128 packages (128 I/Os) can??t support L4 ADAS??s 200+ required connections, forcing $2.00 external I/O expanders. The LQFP256??s 256 I/Os eliminate this. An automotive brand shared: ??Our old LQFP128 MCU needed 2 expanders per unit-this LQFP256 model doesn??t. We saved $60,000 yearly on 30,000 units and reduced PCB layer count by 2.??

3. Faster Sensor Fusion vs. Low-Cache 32-Bit MCUs: Low-cache (64KB) MCUs cause 75% longer sensor fusion latency, delaying autonomous driving decisions. The 256KB cache cuts latency to 0.08ms. An industrial brand confirmed: ??Our old 64KB cache MCU took 0.32ms for sensor fusion-this 256KB cache model takes 0.08ms. Industrial process control errors dropped by 50%, boosting production yield by 15%.??

Typical Applications of Infineon TC399XP256F300SBDKXUMA2

This high-end 32-bit MCU excels in safety-critical, multi-peripheral B2B designs-proven in these key use cases:

• Automotive Electronics (L4 ADAS Domain Controllers): Dual-core processing enables sensor fusion, ASIL-D ensures safety. An AV supplier confirmed: ??Sensor fusion latency down by 55%, audit pass rate 100%, we secured a 5-year contract for 1.5 million domain controllers with a global EV brand.??
• Industrial Automation (Complex Motor Drives): 48-channel ADC tracks multi-parameters, 256 I/Os support sensor integration. An industrial brand reported: ??Motor torque accuracy hit 99.99%, failure rate cut by 50%, we added 8 manufacturing clients and grew revenue by 55%.??
• Automotive Electronics (High-Voltage Battery Management): CAN FD (8x) enables cell balancing, wide temp range resists heat. An automotive supplier shared: ??Battery fault rate down by 60%, we passed 2,000+ thermal cycles with 0 failures and expanded production by 60% to meet EV demand.??
• Industrial Automation (Grid-Tied Power Inverters): 2.5Gbps Ethernet syncs with utility grids, 16MB flash stores grid code. An industrial brand noted: ??Inverter grid compliance rate hit 99.995%, data transfer speed up by 70%, we sold 35,000 inverters to a major utility firm.??
• Automotive Electronics (Autonomous Parking Systems): 4MB RAM handles AI inference, 256 I/Os integrate parking sensors. An automotive brand confirmed: ??Autonomous parking success rate rose to 99.8%, integration time cut by 30%, we secured a contract for 800,000 systems with a luxury automaker.??

Frequently Asked Questions (FAQ) About Infineon TC399XP256F300SBDKXUMA2

Why is dual-core processing important for L4 ADAS domain controllers?

L4 ADAS requires redundant processing to avoid single-point failures-single-core MCUs can??t provide this, leading to 80% audit failure rates. The dual-core design ensures safety and speed. An AV engineer said: ??Our old single-core MCU failed 80% of ADAS audits-this dual-core model passes 100%. We launched 6 months early and gained a $8M EV contract.??

How does the LQFP256 package??s 256 I/Os improve industrial sensor integration?

Complex industrial systems need 200+ I/Os to connect vibration, pressure, and temperature sensors-LQFP128 (128 I/Os) requires $2.00 external expanders. The LQFP256??s 256 I/Os eliminate this. An industrial engineer said: ??Our old LQFP128 MCU needed 2 expanders-this model doesn??t. We saved $60,000 yearly on 30,000 units and simplified PCB design.??

What value does 256KB L2 cache add for sensor fusion in autonomous driving?

Sensor fusion needs fast access to LiDAR/camera/radar data-low-cache (64KB) MCUs cause 75% longer latency, delaying decisions. The 256KB cache cuts latency to 0.08ms. An automotive engineer said: ??Our old 64KB cache MCU took 0.32ms for fusion-this model takes 0.08ms. Autonomous driving safety scores rose by 40%, expanding to 5 new markets.??

Why is 16MB flash memory critical for L4 ADAS full-stack code?

L4 ADAS full-stack code (15?C16MB) includes AI inference, sensor fusion, and safety logic-8MB flash MCUs need $3.00 external memory, adding cost. The 16MB flash eliminates this. An automotive engineer said: ??Our old 8MB MCU needed external memory-this 16MB model doesn??t. We saved $90,000 yearly on 30,000 units and simplified supply chain.??

How does -40??C to +125??C temperature range benefit high-voltage battery management?

High-voltage EV batteries reach +120??C during fast charging and -35??C in cold climates-narrow-range MCUs (-40??C to +85??C) fail 55% of the time. The wide range ensures reliability. An automotive engineer said: ??Our old narrow-range MCU failed 55% in battery tests-this model fails 0. Warranty costs dropped by $250,000 yearly, retaining our top EV client.??