The 82C237 is a modified version of the 82C37A. It is fully software and pin for pin compatible with the 82C37A but provides an additional mode for 16-bit DMA transfers and enhanced speed. Each channel may be individually programmed for 8-bit or 16-bit data transfers. The 82C237 controller can improve system performance by allowing external devices to transfer data directly to or from system memory. Memory-to-memory transfer capability is also provided, along with a memory block initialization feature. DMA requests may be generated by either hardware or software, and each channel is independently programmable with a variety of features for flexible operation. The 82C237 is designed for use in high-end computer systems and offers high performance and low power consumption.
The Intersil 82C237 is a modified version of the 82C37A designed for use in 8MHz and 12.5MHz systems. It features fully software and pin-for-pin compatibility with the 82C37A, while providing additional modes for 16-bit DMA transfers and enhanced speed capabilities.
The device is optimized for 10MHz and 12.5MHz 8088/8086 systems and supports high-speed data transfers of up to 6.25MBytes/sec with a 12.5MHz clock in normal mode, or 12.5MBytes/sec in special 16-bit zero wait state transfer mode.
| Operating Temperature Range (PDIP) | -40°C to +85°C |
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The 82C237-12 can be driven by a clock input up to 12.5MHz.
The maximum ICCSB (standby) current is 104 microamperes.