High-Performance SAB82538H-10V3.2 Octal UART Controller by Infineon

In the realm of data communication and embedded systems, the need for reliable, high-speed serial interfacing remains paramount. Addressing this critical requirement, Infineon Technologies developed the SAB82538H-10V3.2, a highly integrated Octal UART (Universal Asynchronous Receiver/Transmitter) controller engineered for performance-intensive applications. This component stands as a testament to robust design, offering eight full-duplex UART channels within a single package, thereby significantly reducing board space and system complexity.

Operating at a speed grade of 10 MHz (V.10), the SAB82538H-10V3.2 is designed to handle demanding data rates with exceptional efficiency. Each of its eight independent channels can be programmed to operate at baud rates up to 1.25 Mbit/s, making it suitable for a wide array of environments, from industrial automation and telecommunications to sophisticated point-of-sale and multi-user systems. A key architectural advantage is its on-chip 128-byte FIFO (First-In, First-Out) buffer for both receiver and transmitter on each channel. This deep buffering is crucial for minimizing CPU overhead by reducing interrupt service requests, thus allowing the host processor to manage other tasks and enhancing overall system throughput.

The controller supports a comprehensive set of modem control signals (including RTS, CTS, DSR, DTR, RI, and DCD) for each channel, ensuring full compatibility in modem-interfacing applications. Its programmability is extensive, offering flexible data formatting with 5- to 8-bit character lengths, and 1, 1.5, or 2 stop bits. Error detection mechanisms for parity, overrun, framing, and break detection are built-in, guaranteeing data integrity. Furthermore, it features a versatile DMA (Direct Memory Access) interface, which streamlines data transfers between the UART and system memory, further optimizing performance in high-bandwidth scenarios.

Packaged in a 100-pin Plastic Quad Flat Pack (PQFP), the device is designed for manufacturability and reliability. Its operating voltage is typically 5V, consistent with the industrial standards of its era. The SAB82538H-10V3.2 represents a powerful, consolidated solution for systems requiring multiple serial ports, delivering a blend of high performance, integration, and operational flexibility that was advanced for its time and remains relevant in legacy and specialized systems today.

ICGOODFIND: A quintessential component for multi-port serial communication design, the Infineon SAB82538H-10V3.2 Octal UART delivers high integration, deep FIFO buffering, and DMA support to maximize data throughput and minimize processor load in complex embedded systems.

Keywords: Octal UART, FIFO Buffer, DMA Interface, Baud Rate, Modem Control