CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U13850EJ4V0UM
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10.4.4 Standby function
(1) Operation in HALT mode
Serial transfer operations are performed normally.
(2) Operation in STOP and IDLE modes
(a) When internal clock is selected as serial clock
The operations of asynchronous serial interface mode register n (ASIMn), transmit shift register n (TXSn),
and receive buffer register n (RXBn) are stopped and their values immediately before the clock stopped are
hold.
The TXDn pin output holds the data immediately before the clock is stopped (in STOP mode) during
transmission. When the clock is stopped during reception, the receive data until the clock stopped are
stored and subsequent receive operation is stopped. Reception resumes upon clock restart.
(b) When external clock is selected as serial clock
Serial transfer operation is performed normally.
Содержание MPD703030A
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