Direct memory access system for microcontroller
US4782439A · kind A · utility
47Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/9057
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to a pair of on-board DMA channels for use in connection with a single integrated circuit microcontroller. The two DMA channels, which are identical to one another, allow high speed data transfer from one variable memory space to another. As many as 64 Kbytes can be transferred in a single DMA operation. The memory transfer can be between internal data memory, external data memory and/or special function registers (of the type commonly employed in INTEL 8051 microcontrollers).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.