MP7610 데이터 시트보기 (PDF) - Exar Corporation

부품명

상세내역

일치하는 목록

MP7610

Octal 14-Bit DAC Array™ D/A Converter with Output Amplifier and Serial Data/Address mP Control Logic

Exar Corporation 

MP7610

A0 to A15

MC6800

02

R/W

DBO to DB7

16

8

16 Address Bus

3

E1 A0 to A2

E3

74LS138

Address

E2 Decoder

8 Data Bus

LD

CLK

DB7 SDI

RST

From SYSTEM RESET

NOTES

1. Execute consecutive memory write instructions while manipulating the data between WRITEs so that each

WRITE presents the next bit.

2. The serial data loading is triggered by the CLK pulse which is asserted by a decoded memory WRITE to

memory location 2000, R/W, and 02. A WRITE to address 4000 transfers data from input shift register to DAC

register.

Figure 7. MC6800 Interface

8085

ALE

WR

SOD

8

Address Bus

8

8212

+5

8

Data Bus

3

E1 A0 to A2

E3

74LS138

Address

E2 Decoder

LD

SDI

CLK

RST

NOTES:

From SYSTEM RESET

1. Clock generated by WR and decoding address 8000.

2. Data is clocked in the DAC shift register by executing memory write instructions. The clock input is generated

by decoding address 8000 and WR. Data is then loaded into the DAC register with a memory write instruction

to address 4000.

3. Serial data must be present in the right justified format in registers H & L of the microprocessor.

Figure 8. 8085 Interface

Rev. 4.01

10

Share Link: