Datasheet

Section 15 Serial Communication Interface (SCI)
Rev. 2.00 Sep. 28, 2009 Page 467 of 994
REJ09B0452-0200
15.9.8 Note on Writing to Registers in Transmission, Reception, and Simultaneous
Transmission and Reception
After 1 is set to the TE and RE bits in SCR to start transmission, reception, and simultaneous
transmission and reception, do not write to SMR, SCR, BRR, and SDCR. Also, do not overwrite
the same value as the register value. However, this does not apply when a register is written to
clear the TE and RE bits in SCR to 0 after transmission, reception, or simultaneous transmission
and reception is completed. Reading is always allowed.