p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 402

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI)
15.8.9
Notes on Register Writing during the Receive, Transmit, or Transfer Operation
Once the TE or RE bit of the SCR register has been set to 1 to start the receive, transmit, or
transfer operation, the SMR, SCR, SCMR, and BRR registers should not be written to. Rewriting
the set value to these registers is also prohibited. However, this does not apply to the clearing of
the TE or RE bit at the end of the receive, transmit, or transfer operation.
These registers can always be read from.
Rev. 1.00 Sep. 21, 2006 Page 364 of 658
REJ09B0310-0100