Description
SYMBOL
PIN NUMBER
VCC
31
GND
20
CLK
12
CS
11
RESET
13
READY
6
HLDA
7
DREQ0DREQ3
16-19
DB0-DB7
21-23 26-30
IOR
1
IOW
2
TYPE
Features
- for flexible operation. The 82C37A is designed to be used with an external address latch, such as the 82C82, to demultiplex the most significant 8-bits of address. The 82C37A can be used with industry standard microprocessors such as 80C286, 80286, 80C86, 80C88, 8086, 8088, 8085, Z80, NSC800, 80186 and others. Multimode programmability allows the user to select from three basic types of DMA services, and reconfiguration under program control is possible even with the clock to the controller stop.
82C37A Datasheet
