Datasheet

ManualsBrandsANALOG DEVICES ManualsData collecting ICsData acquisition IC - DA converter (DAC) PDIP 24

AD7225

Rev. C | Page 19 of 24

MICROPROCESSER INTERFACE

*LINEAR CIRCUITRY OMITTED FOR CLARITY.

ADDRESS

DECODE

LATCH

AD7225*

DB7

DB0

LDAC

ADDRESS BUS

ADDRESS DATA BUS

8085A/

8088

A15

ALE

AD0

AD7

00986-025

*LINEAR CIRCUITRY OMITTED FOR CLARITY.

Z-80

A15

AD7225*

DB7

DB0

LDAC

ADDRESS BUS

DATA BUS

ADDRESS

DECODE

MREQ

00986-026

Figure 25. AD7225-to-8085A/8088 Interface, Double-Buffered Mode Figure 26. AD7225-to-Z-80 Interface, Double-Buffered Mode

*LINEAR CIRCUITRY OMITTED FOR CLARITY.

6809/

6502

A15

E OR Φ2

AD7225*

R/W

DB7

DB0

LDAC

ADDRESS BUS

DATA BUS

ADDRESS

DECODE

00986-027

*LINEAR CIRCUITRY OMITTED FOR CLARITY.

68008

A23

AD7225*

DB7

DB0

LDAC

ADDRESS BUS

DATA BUS

ADDRESS

DECODE

R/W

DTACK

00986-028

Figure 27. AD7225-to-6809/6502 Interface, Single-Buffered Mode Figure 28. AD7225-to-68008 Interface, Single-Buffered Mode