XR16C872IQ View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR16C872IQ

Dual UART with 1284 Parallel Port and Plug-and-Play Controller

Exar Corporation 

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XR16C872

Preliminary

AEN

A0-A15

IOR#

D0-D7

T3AS

Valid Address

T5RD

T4AH

Active

T7DA

T8DH

Valid Data

Figure 8. ISA Bus Read Timing

T6DY

XR872RD

EXTERNAL

CLOCK

T1CW

T1CW

T2FQ

Figure 9. External Clock Timing

Rev. P1.00

50

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