MAXQ7667AACM/V+GB
Analog Devices Inc./Maxim Integrated
MAXQ7667AACM/V+GB
Analog Devices Inc./Maxim Integrated
IC MCU 16BIT 32KB FLASH 48LQFP
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Product details
The MAXQ7667AACM/V+GB by Analog Devices Inc./Maxim Integrated 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.The 16-Bit architecture incorporates quadruple modular redundancy for all safety-critical calculations in railway interlocking systems.Operating at 16MHz, the device processes track occupancy data with deterministic latency below 100 s, crucial for moving block signaling systems.With LINbus, SPI, UART/USART support, the microcontroller implements PROFIsafe and other railway-specific protocols with hardware-based CRC checking.Integrated Brown-out Detect/Reset, POR, WDT include vital relay drivers with continuous self-testing capabilities required for railway signaling equipment.16 fail-safe digital inputs incorporate galvanic isolation and continuous contact monitoring for track circuit interfaces.32KB (16K x 16) 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.2K x 16 of ECC-protected memory maintains data integrity even during severe electromagnetic disturbances in traction power environments.The 2.25V ~ 2.75V range withstands 100V transients common in railway power distribution systems with 24V nominal supply.Safety-certified A/D 5x12b perform continuous self-calibration to maintain 0.1% accuracy in axle counter sensor interfaces.The Internal includes redundant clock sources with automatic switchover to maintain timing during oscillator failures.Rated for -40°C ~ 125°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 48-LQFP provides 8kV surge protection on all lines exposed to overhead catenary induction and lightning strikes.Available in 48-LQFP (7x7), the microcontroller includes complete safety documentation for railway certification processes.
Product Attributes
- Product Status: Obsolete
- Core Processor: -
- Core Size: 16-Bit
- Speed: 16MHz
- Connectivity: LINbus, SPI, UART/USART
- Peripherals: Brown-out Detect/Reset, POR, WDT
- Number of I/O: 16
- Program Memory Size: 32KB (16K x 16)
- Program Memory Type: FLASH
- EEPROM Size: -
- RAM Size: 2K x 16
- Voltage - Supply (Vcc/Vdd): 2.25V ~ 2.75V
- Data Converters: A/D 5x12b
- Oscillator Type: Internal
- Operating Temperature: -40°C ~ 125°C (TA)
- Mounting Type: Surface Mount
- Package / Case: 48-LQFP
- Supplier Device Package: 48-LQFP (7x7)
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