F28M35M20B1RFPT
Texas Instruments
F28M35M20B1RFPT
Texas Instruments
IC MCU 32BIT 256KB FLASH 144TQFP
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Product details
The F28M35M20B1RFPT by Texas Instruments pioneers ultra-reliable Embedded - Microcontrollers for railway signaling systems. Its fail-safe architecture and SIL4 certification make it the preferred choice for vital train control applications.Featuring C28x/ARM® Cortex®-M3 technology with lockstep cores, this microcontroller detects processing errors within 50ns to meet CENELEC EN 50128 safety requirements.The 32-Bit Dual-Core architecture incorporates quadruple modular redundancy for all safety-critical calculations in railway interlocking systems.Operating at 75MHz/75MHz, the device processes track occupancy data with deterministic latency below 100 s, crucial for moving block signaling systems.With CANbus, EBI/EMI, I²C, McBSP, SCI, SPI, SSI, UART/USART support, the microcontroller implements PROFIsafe and other railway-specific protocols with hardware-based CRC checking.Integrated Brown-out Detect/Reset, DMA, POR, PWM, WDT include vital relay drivers with continuous self-testing capabilities required for railway signaling equipment.74 fail-safe digital inputs incorporate galvanic isolation and continuous contact monitoring for track circuit interfaces.256KB/256KB accommodates SIL4-certified application code with complete diversity between primary and secondary safety channels.The FLASH implementation includes periodic memory scrubbing that detects and corrects radiation-induced soft errors.72KB of ECC-protected memory maintains data integrity even during severe electromagnetic disturbances in traction power environments.The 1.2V, 1.8V, 3.3V range withstands 100V transients common in railway power distribution systems with 24V nominal supply.Safety-certified A/D 20x12b perform continuous self-calibration to maintain 0.1% accuracy in axle counter sensor interfaces.Rated for -40°C ~ 105°C (TJ), the device operates reliably in trackside enclosures without climate control.Surface Mount packaging withstands 5g vibration and 50g shock loads specified in EN 61373 for rolling stock equipment.The 144-TQFP Exposed Pad provides 8kV surge protection on all lines exposed to overhead catenary induction and lightning strikes.Available in 144-HTQFP (20x20), the microcontroller includes complete safety documentation for railway certification processes.
Product Attributes
- Product Status: Obsolete
- Core Processor: C28x/ARM® Cortex®-M3
- Core Size: 32-Bit Dual-Core
- Speed: 75MHz/75MHz
- Connectivity: CANbus, EBI/EMI, I²C, McBSP, SCI, SPI, SSI, UART/USART
- Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O: 74
- Program Memory Size: 256KB/256KB
- Program Memory Type: FLASH
- EEPROM Size: -
- RAM Size: 72KB
- Voltage - Supply (Vcc/Vdd): 1.2V, 1.8V, 3.3V
- Data Converters: A/D 20x12b
- Oscillator Type: -
- Operating Temperature: -40°C ~ 105°C (TJ)
- Mounting Type: Surface Mount
- Package / Case: 144-TQFP Exposed Pad
- Supplier Device Package: 144-HTQFP (20x20)
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