2-31
3802 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
(2) Connection with microcomputer
Figure 2.3.15 shows connection examples of the other microcomputers.
Fig. 2.3.15 Serial I/O connection examples (2)
(4) Using UART
S
CLK
T
X
D
R
X
D
CLK
IN
OUT
(2) Selecting an external clock
3802 group
Microcomputer
(3) Using the
S
RDY
siganl output function
(Selecting an external clock)
S
RDY
S
CLK
T
X
D
R
X
D
RDY
CLK
IN
OUT
3802 group
Microcomputer
CLK
IN
OUT
(1) Selecting an internal clock
3802 group
Microcomputer
6
: UART can not be used in the serial I/O2
.
Note:
Use S
OUT
and S
IN
instead of T
X
D and R
X
D in the serial I/O2.
R
X
D
T
X
D
S
CLK
T
X
D
R
X
D
R
X
D
T
X
D
3802 group
Microcomputer
6