h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 455
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
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Reception: Before making the transition to module stop, software standby, watch, sub-active, or
sub-sleep mode, stop reception (RE = 0). RSR, RDR, and SSR are reset. If transition is made
during data reception, the data being received will be invalid.
To receive data in the same reception mode after mode cancellation, set RE to 1, and then start
reception. To receive data in a different reception mode, initialize the SCI first.
Figure 13.37 shows a sample flowchart for mode transition during reception.
output pin
output pin
output pin
output pin
SCK
SCK
TxD
TxD
TE bit
Figure 13.35 Pin States during Transmission in Asynchronous Mode (Internal Clock)
TE bit
Note: Initialized in software standby mode
Figure 13.36 Pin States during Transmission in Clocked Synchronous Mode
input/output
input/output
Port
Port
Port
Port
High output
Marking output
Transmission start
Transmission start
Start
SCI TxD output
SCI TxD output
(Internal Clock)
Transmission end
Transmission end
Section 13 Serial Communication Interface (SCI)
Last TxD bit retained
Stop
Rev. 2.00 Dec. 05, 2005 Page 417 of 724
Transition to
software standby
mode
Transition to
software standby
mode
Port input/output
Port input/output
input/output
input/output
Port
Port
Port
Port
Software standby
mode cancelled
Software standby
mode cancelled
REJ09B0200-0200
High output*
High output
TxD output
TxD output
SCI
SCI
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