xr88c681 Exar Corporation, xr88c681 Datasheet - Page 92

• Manufacturer Part Number: xr88c681
• Description: Cmos Dual Channel Uart Duart
• Manufacturer: Exar Corporation

Rev. 2.11
A0 - A3
D0 - D7
D0 - D7
(Write)
(Read)
-WR
-CS
-RD
FLOAT
t
t
CS
AS
Figure 52. XR88C681 Read and Write Cycle Timing
VALID
NOT
t
t
RW
DD
t
DS
VALID
92
VALID
t
t
AH
t
CH
DH
t
DF
t
RWD
t
RWD
FLOAT