H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 303

• Manufacturer Part Number: H8S2110B
• Description: Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

output pin
output pin
Figure 12.22 Pin States during Transmission in Asynchronous Mode (Internal Clock)
SCK
TxD
TE bit
Figure 12.21 Sample Flowchart for Mode Transition during Transmission
Make transition to software standby mode etc.
Cancel software standby mode etc.
input/output
Port
Port
Change operating mode?
Read TEND flag in SSR
All data transmitted?
Start transmission
Transmission
Initialization
TEND = 1
Yes
Yes
Yes
High output
TE = 0
Transmission start
[2]
Start
SCI TxD output
No
No
No
TE = 1
[1]
[3]
Section 12 Serial Communication Interface (SCI)
Transmission end
[1] Data being transmitted is lost
[2] Also clear TIE and TEIE to 0
[3] Module stop, watch, sub-active,
halfway. Data can be normally
transmitted from the CPU by
setting TE to 1, reading SSR,
writing to TDR, and clearing
TDRE to 0 after mode
cancellation.
when they are 1.
and sub-sleep modes are
included.
Rev. 2.00 Mar 21, 2006 page 265 of 518
Stop
Transition to
software standby
mode
Port input/output
input/output
Port
Port
REJ09B0299-0200
Software standby
mode cancelled
High output
TxD output
SCI