HD64F38602R Datasheet, PDF (313/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 14 Serial Communication Interface 3 (SCI3, IrDA)
14.8.8
Transmit and Receive Operations when Making State Transition
Make sure that transmit and receive operations have completely finished before carrying out state
transition processing.
14.8.9
Setting in Subactive or Subsleep Mode
In subactive or subsleep mode, the SCI3 can operate only when the CPU clock is φ_W. The SA1 and
SA0 bits in SYSCR2 should be set to 1.
14.8.10 Oscillator when Serial Communication Interface 3 is Used
When serial communication interface 3 is used, the system clock oscillator or subclock oscillator
must be used. Do not use the on-chip oscillator. For details on selecting the system clock oscillator
or on-chip oscillator, see section 4.2.4, On-Chip Oscillator Selection Method. For details on
selecting the subclock oscillator or on-chip oscillator, see section 4.1.1, Oscillator Control
Register (OSCCR).
Rev. 3.00 May 15, 2007 Page 281 of 518
REJ09B0152-0300