LTC1657 Datasheet, PDF (6/12 Pages) Linear Technology – Parallel 16-Bit Rail-to-Rail Micropower DAC

LTC1657
DIGITAL INTERFACE TRUTH TABLE
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
CSLSB
CSMSB
WR
LDAC
DATA
t _CS
t _CWS
t _WR
t _CWH
t _DWS
t _DWH
DATA VALID
t _CS
t _WR
DATA VALID
t _LDAC
DAC UPDATE
1657 TD
6