UMC UM8237A-4
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. The LJ M8237A offers a wide variety of programmable contro| Part No. | UM8237A-4 |
|---|---|
| Datasheet | UM8237A-4 Download |
| Manufacturer |  UMC |
| Description | Programmable DMA Controller |
| Buy | Stock & Price |
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