Key facts
- Brand
- Intersil
- Model
- 82C37A
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-11
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Intersil 82C37A CMOS High Performance Programmable DMA Controller Datasheet
The Intersil 82C37A is an enhanced version of the industry standard 8237A Direct Memory Access (DMA) controller, fabricated using Intersil's advanced 2 micron CMOS process. It is pin compatible with NMOS designs and offers increased functionality, improved performance, and dramatically reduced power consumption compared to its predecessor.
The controller allows external devices to transfer data directly to or from system memory and supports memory-to-memory transfers. It is designed to be used with an external address latch, such as the 82C82, and is compatible with industry standard microprocessors including the 8086, 80286, and Z80. The device supports three basic types of DMA services and allows reconfiguration under program control.
Intersil 82C37A specifications
| Compatible with | NMOS 8237A |
|---|---|
| Maximum Supply Current (Standby) | 104A |
| Maximum Supply Current (Operating) | 2mA/MHz |
| Maximum Data Transfer Rate (8MHz) | 4MBytes/sec |
| Maximum Data Transfer Rate (12.5MHz) | 6.25MBytes/sec |
| Process Technology | 2 micron CMOS |
| Address Range per Channel | 64K |
Source: Intersil 82C37A CMOS High Performance Programmable DMA Controller Datasheet
All Intersil 82C37A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the maximum data transfer speeds of the 82C37A?
The controller supports transfers up to 4MBytes/sec with an 8MHz clock or up to 6.25MBytes/sec with a 12.5MHz clock.
From: Intersil 82C37A CMOS High Performance Programmable DMA Controller Datasheet
What is the maximum current consumption for standby operation?
The maximum ICCSB current rating is 104A.
From: Intersil 82C37A CMOS High Performance Programmable DMA Controller Datasheet
What is the function of the 82C37A controller?
It is a direct memory access (DMA) controller designed to improve data transfer rates by moving data directly between I/O devices and memory, and it also supports memory‑to‑memory transfers.
How many independent channels does the 82C37A provide?
Four independent maskable channels with autoinitialization capability.