X79000 Datasheet, PDF (3/18 Pages) Intersil Corporation – NV DAC with Selectable Output Range and Memory

X79000, X79001, X79002
PIN DESCRIPTIONS
Pin Name
CS
SCK
SI
SO
RDY
CLR
A5, A4, A3,
A2, A1, A0
OE
UP
DOWN
V_CC
V_SS
Vout
Vbuf
VFB
Vref
VH
VL
DNC
Pin Description
SPI Chip Select. CMOS Input Pin. Active low.
SPI Clock. CMOS Input Pin, with hysteresis.
SPI Serial Data. CMOS Input Pin, with hysteresis.
SPI Serial Data Output Pin. CMOS levels with high impedance state.
Power-Up “Ready” Indicator Output Pin. Active low. Open drain output.
Clear DAC Volatile Register Input Pin. Active high. CMOS Input Pin with hysteresis. On-chip pulldown.
SPI Address Input pins. CMOS Input Pins. On-chip pulldowns.
Buffer Output Enable Input Pin. Active high. CMOS Input Pin with hysteresis. On-chip pulldown.
UP Input pin of the UP/DOWN interface. CMOS Input Pin with deglitching filter. On-chip pulldown.
DOWN Input pin of the UP/DOWN interface. CMOS Input Pin with deglitching filter. On-chip pulldown.
Power Supply Pin.
Ground Pin.
Unbuffered DAC Output Pin.
Buffered DAC Output Pin.
Feedback Pin for Buffer Stage.
Bandgap Voltage Output Pin.
Full Scale Voltage Input or Output Pin.
Zero Scale Voltage Input or Output Pin.
Do Not Connect
3
FN8147.0
March 17, 2005