UM82C206
FEATURES
| Fully patible with PC/AT architecture
I Fully patible with 8237 DMA controller,
8259 interrupt controller,
8254 timer/counter, and 146818 real time clock
I Provides 7 DMA channels, 13 interrupt request channels, 2 timer/counter channels, and a real time clock
| Built in 74LS612 memory mapper for DMA page address
I Provides 114 bytes of CMOS RAM memory
| 8 MHz DMA clock with programmable internal divider for 4 MHz operation
116M byte DMA address space’
I Programmable wait states for the DMA cycle
I Reduced recovery time (120ns) between I/O operations
GENERAL DESCRIPTION
The UM82C206 Integrated Peripheral Controller includes two 8237 DMA controllers, two 8259 interrupt controllers, one 8254 timer/counter, one MC146818 patible real time clock,an additional 64 bytes CMOS RAM, one 74LS612 memory mapper, and some top level decoder/configuration logic circuits. It is a single chip integration of all main peripheral parts attached to the X bus of PC/AT architecture....
