Category: Hardware
Product Number: AD5254
Hi,
I am experimenting with a AD5254 digi-pot and am finding that reading from the RDAC is always one write behind, a second read is as expected.
write 0x80 to RDAC 0.
read 0x0 from RDAC 0.
read2 0x80 from RDAC 0.
After a second write...
write 0x81 to RDAC .
read 0x80 from RDAC.
read 0x81 from RDAC.
I am interfacing with a small TI msp430 micro-controller. The logic analyzer output looks ok and appears to match the AD datasheet. I am curious if there is some timing constraints that I am missing, the throw-away-read doesn't seem like expected behavior.
Thanks in advance,
