AT43USB355E-AC

Microchip Technology presents AT43USB355E-AC, a breakthrough in Embedded - Microcontrollers - Application Specific designed for medical devices and precision instrumentation. This application-specific microcontroller combines ultra-low noise analog performance with deterministic digital control, enabling new generations of diagnostic equipment.Specialized for USB Microcontroller implementations, the device includes medical-grade isolation barriers. The analog front-end achieves 24-bit resolution with <1 V input-referred noise for sensitive measurements.The AVR architecture features zero-wait-state flash access for deterministic interrupt response. The tightly coupled memory accelerates real-time signal processing algorithms.With SRAM (24kB) organization, the memory subsystem supports concurrent read-while-write operations. The flash memory endurance exceeds 100,000 write cycles with data retention of 20 years.As a member of the AT43USB family, this device shares safety certification packages with related products. The common architecture simplifies regulatory compliance efforts.The 1K x 8 memory implements hardware-based memory protection units. The error-correcting codes ensure data integrity for critical healthcare applications.The SPI, 3-Wire Serial connectivity includes medical data protocols like IEEE 11073. Each communication channel implements reinforced isolation meeting 5kVrms withstand requirements.Providing 27 configurable ports, the GPIO matrix supports analog multiplexing functions. Each I/O pin includes overvoltage protection up to 15V above supply rails.Operating from 4.4V ~ 5.25V sources, the power architecture achieves 75dB PSRR for noise-sensitive applications. The integrated voltage references maintain 0.05% accuracy over temperature.Rated for 0°C ~ 70°C operation, the package uses biocompatible molding compounds. The device undergoes sterilization compatibility testing for medical applications.The Surface Mount configuration supports medical PCB cleaning processes. The package material selection minimizes outgassing in vacuum environments.Available in 64-LQFP format, the package features gold-plated contacts for reliable connections. The hermetic sealing prevents moisture ingress in humid environments.Supplied in 64-LQFP (10x10) configuration, each unit includes full traceability documentation. The manufacturing process complies with ISO 13485 medical device standards.