Direct memory access system for microcontroller

Details Direct memory access system for microcontroller Direct memory access system for microcontroller

1987-02-17

1988-11-01

Chan, Eddie P.

Boots, shoes, and leggings

G06F 1300

Patent

active

047824395

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).

REFERENCES:
patent: 4067059 (1978-01-01), Derchak
patent: 4479179 (1984-10-01), Dinwiddie, Jr.
patent: 4558412 (1985-12-01), Inoshita et al.
patent: 4658350 (1987-04-01), Eggebrecht et al.
patent: 4688166 (1987-08-01), Schneider

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