AD664SD-UNI(RevC) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD664SD-UNI
(Rev.:RevC)

Monolithic 12-Bit Quad DAC

Analog Devices 

IBM PC* Interface

Figure 27 illustrates a simple interface between an IBM PC and

an AD664. The three least significant address bits are used to

select the Quad and DAC. The next two address bits are used

for LS and MS. In this scheme, a 12-bit input word requires

two load cycles, an 8-bit word and a 4-bit word. Another write

AD664

is required to transfer the word or words previously written to

the second rank. A 12-bit-wide word again requires at least two

read cycles; one for the 8 MSBs and four for the LSBs. The

page select signal produces a CS strobe for any address from

300H to 31FH.

Figure 26. AD664 to 8051 Interface

Figure 27. AD664 to IBM PC Interface

*IBM PC is a trademark of International Business Machines Corp.

REV. C

–15–

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