XRM46L852PGET
Texas Instruments
XRM46L852PGET
Texas Instruments
IC MCU 16/32BIT 1.25MB 144LQFP
Reference Price (USD)
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$23.31000
500+
$23.0769
1000+
$22.8438
1500+
$22.6107
2000+
$22.3776
2500+
$22.1445
Exquisite packaging
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XRM46L852PGET
$23.31
Product details
The XRM46L852PGET 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 ARM® Cortex®-R4F technology with lockstep cores, this microcontroller detects processing errors within 50ns to meet CENELEC EN 50128 safety requirements.The 16/32-Bit architecture incorporates quadruple modular redundancy for all safety-critical calculations in railway interlocking systems.Operating at 220MHz, the device processes track occupancy data with deterministic latency below 100 s, crucial for moving block signaling systems.With CANbus, EBI/EMI, Ethernet, I²C, LINbus, MibSPI, SCI, SPI, UART/USART, USB support, the microcontroller implements PROFIsafe and other railway-specific protocols with hardware-based CRC checking.Integrated DMA, POR, PWM, WDT include vital relay drivers with continuous self-testing capabilities required for railway signaling equipment.64 fail-safe digital inputs incorporate galvanic isolation and continuous contact monitoring for track circuit interfaces.1.25MB (1.25M x 8) 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.64K x 8 of non-volatile storage maintains vital configuration data through 20 years of continuous operation in signaling applications.192K x 8 of ECC-protected memory maintains data integrity even during severe electromagnetic disturbances in traction power environments.The 1.14V ~ 1.32V range withstands 100V transients common in railway power distribution systems with 24V nominal supply.Safety-certified A/D 24x12b perform continuous self-calibration to maintain 0.1% accuracy in axle counter sensor interfaces.The External includes redundant clock sources with automatic switchover to maintain timing during oscillator failures.Rated for -40°C ~ 105°C (TA), 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-LQFP provides 8kV surge protection on all lines exposed to overhead catenary induction and lightning strikes.Available in 144-LQFP (20x20), the microcontroller includes complete safety documentation for railway certification processes.
Product Attributes
- Product Status: Discontinued at Digi-Key
- Core Processor: ARM® Cortex®-R4F
- Core Size: 16/32-Bit
- Speed: 220MHz
- Connectivity: CANbus, EBI/EMI, Ethernet, I²C, LINbus, MibSPI, SCI, SPI, UART/USART, USB
- Peripherals: DMA, POR, PWM, WDT
- Number of I/O: 64
- Program Memory Size: 1.25MB (1.25M x 8)
- Program Memory Type: FLASH
- EEPROM Size: 64K x 8
- RAM Size: 192K x 8
- Voltage - Supply (Vcc/Vdd): 1.14V ~ 1.32V
- Data Converters: A/D 24x12b
- Oscillator Type: External
- Operating Temperature: -40°C ~ 105°C (TA)
- Mounting Type: Surface Mount
- Package / Case: 144-LQFP
- Supplier Device Package: 144-LQFP (20x20)
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