Skip to main content
Knowledgebase
Home
Renesas Singapore - Knowledgebase

If I wait for the time, is this end of transfer. Can next data be written?

Latest Updated:12/01/2011

Question:

If I wait for the time corresponding to (clock pulse width per bit x 8 bits), is this considered the end of transfer and can the next data be written?

Answer:

No.
Write the next data after waiting for the transfer end flag.
Since the CPU operation and SIO operation are asynchronous, the transmission does not start immediately, even if data is written to SIO.
In order to achieve synchronization, transmission starts after a lapse of time corresponding to approximately 1.5 serial clocks (worst case) (in the case of operation using the internal clock).
Suitable Products
RL78 Family
78K Family