UM8237A-5 Datasheet | UMC

Features - Enable/Disable control of individual DMA requests - Four independent DMA channels - Independent autoinitialization of all channels - Memory-to-memory transfers - Memory block initialization - Single 5V power supply - High performance: transfers up to 1.6M bytes/second with 5MHz 8237A-5 - Directly expandable to any number of channels - End of process input for terminating transfers - Software DMA requests - Independent Polarity control for DREQ and DACK signals - Available in EXPRESS - Standard Temperature Range General Description The UM8237A Direct Memory Access Controller (DMAC) is a peripheral interface circuit for microprocessor systems. It is designed to improve system performance by allowing external devices to directly transfer information from the system memory. Memory-tb-memory' transfer capability is also provided. The LJ M8237A offers a wide variety of programmable...