DAC8426

–11–

REV. C

MICROPROCESSOR INTERFACING

The DAC8426 easily interfaces to most 8- and 16-bit wide data-

bus systems. Serial and 4-bit busses can also be accommodated

with additional latches and control circuitry. Interfacing can be

accomplished with databus transfers running with 50 ns write

pulse widths.

Examples of various microprocessor interface circuits are pro-

vided in Figures 8 through 12. These figures have omitted cir-

cuitry not essential to the bus interface. The design process

should include review of the DAC8426 timing diagram with the

µP system timing diagram.

Figure 8. DAC8426 to 8085A Interface (Simplified circuit,

only lines of interest are shown.)

Figure 9. DAC8426 to Z-80 Interface (Simplified circuit,

only lines of interest are shown.)

Figure 10. DAC8426 to 6809 Interface (Simplified circuit,

only lines of interest are shown.)

Figure 11. DAC8426 to 6502 Interface (Simplified circuit,

only lines of interest are shown.)

Figure 12. DAC8426 to 68000 Interface (Simplified circuit,

only lines of interest are shown.)