LTC1657L データシートの表示（PDF） - Linear Technology

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LTC1657L

Parallel 16-Bit Rail-to-Rail Micropower DAC

Linear Technology 

DIGITAL INTERFACE TRUTH TABLE

LTC1657L

CLR

CSMSB CSLSB

WR

L

X

X

X

H

X

X

X

H

X

X

X

H

L

H

L

H

H

L

L

H

L

L

L

H

X

X

H

H

H

X

X

H

X

H

X

H

L

L

L

LDAC

X

L

H

X

X

X

X

X

X

L

FUNCTION

Clears input and DAC registers to zero

Loads DAC register with contents of input registers

Freezes contents of DAC register

Writes MSB byte into MSB input register

Writes LSB byte into LSB input register

Writes MSB and LSB bytes into MSB and LSB input registers

Inhibits write to MSB and LSB input registers

Inhibits write to MSB input register

Inhibits write to LSB input register

Data bus flows directly through input and DAC registers

TIMING DIAGRAM

t CS

CSLSB

CSMSB

WR

t CWS

t WR

t CWH

LDAC

DATA

t DWS

t DWH

DATA VALID

t CS

t WR

DATA VALID

t LDAC

DAC UPDATE

1657 TD

5

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