PT6964_10 Datasheet, PDF (8/15 Pages) Princeton Technology Corp – LED Driver IC

PT6964
SERIAL COMMUNICATION FORMAT
The following diagram shows the PT6964 serial communication format. The DI/O Pin is an N-channel, open-drain output
pin, therefore, it is highly recommended that an external pull-up resistor (1KΩ to 10KΩ) must be connected to DI/O.
RECEPTION (DATA/COMMAND WRITE)
TRANSMISSION (DATA READ)
where: twait (waiting time) ≥ 1µs
It must be noted that when the data is read, the waiting time (twait) between the rising of the eighth clock that has set the
command and the falling of the first clock that has read the data is greater or equal to 1µs.
V1.4
8
October 2009