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3800 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
(2) Connection with microcomputer
Figure 2.3.11 shows connection examples of the other microcomputers.
Fig. 2.3.11 Serial I/O connection examples (2)
(4) Using UART
SCLK
TXD
RXD
CLK
IN
OUT
(2) Selecting an external clock
3800 group
Microcomputer
(3) Using the SRDY siganl output function
(Selecting an external clock)
SRDY
SCLK
TXD
RXD
RDY
CLK
IN
OUT
3800 group
Microcomputer
CLK
IN
OUT
(1) Selecting an internal clock
3800 group
Microcomputer
RXD
TXD
SCLK
TXD
RXD
TXD
3800 group
Microcomputer