XR88C681CJ View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR88C681CJ

CMOS Dual Channel UART (DUART)

Exar Corporation 

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XR88C681

-RD or

-CS

IP0 - IP6

-WR or

-CS

OP0 - OP7

tPS

tPH

OLD DATA

NEW DATA

tPD

Figure 54. Port Timing

-RD or

-CS or

-WR

Interrupt

Output

Rev. 2.11

tIR

Figure 55. Interrupt Timing

94

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