X79000 Datasheet, PDF (15/18 Pages) Intersil Corporation – NV DAC with Selectable Output Range and Memory

READ OPERATION
CS
X79000, X79001, X79002
Signal
at SI
Signal
at SO
Read
Device
Memory
Address
Address Byte
0
1
High Impedance
WRITE OPERATION
CS
X
First Read
Data Byte
Last Read
Data Byte
Write
Device
Memory
Address
Address Byte
First Data
Byte to Write
Signal
at SI
0
0
When writing to nonvolatile memory.
0
WIP
bit
When writing to volatile registers only.
0
Last Data
Byte to Write
Internal
High Voltage
Write Cycle
1 10
WRITE STATUS POLLING COMMAND
CS
Device
Address
Signal
at SI
1
1
X
Signal
at SO
High Impedance
Value of “WIP” (Write In Progress) bit
For every byte, the MSB is transmitted first and the LSB is sent last.
15
FN8147.0
March 17, 2005