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APPLICATION
2.4 Serial I/O
2.4.3 Operation description
Figure 2.4.2 shows the serial I/O connection example, Figure 2.4.3 shows the serial I/O register state, and
Figure 2.4.4 shows the serial I/O transfer timing.
Master (internal clock selected)
Note: The control signal is used to inform the master by the pin level
that the slave is in a ready state to receive.
The 4513/4514 Group does not have a control pin exclusively
used for serial I/O.
Accordingly, if a control signal is required, use the normal input/output ports.
Fig. 2.4.2 Serial I/O connection example
Master (M
7
Serial I/O register (SI)
M
M
7
M
M
7
M
S
M
0
S
S
S
7
Fig. 2.4.3 Serial I/O register state when transmitting/receiving
2-42
4513/4514
D
5
S
CK
S
OUT
S
IN
–M
: Transfer data)
0
M
M
M
M
M
M
6
5
4
3
2
1
0
M
M
M
M
M
M
6
5
4
3
2
1
0
M
M
M
M
M
M
7
6
5
4
3
2
1
M
M
M
M
M
M
6
5
4
3
2
1
7
M
M
M
M
M
M
7
0
6
5
4
3
2
S
S
S
S
S
S
6
5
4
3
2
1
0
4513/4514 Group User's Manual
Slave (external clock selected)
Control signal
Slave (S
–S
: Transfer data)
7
0
S
pin
S
pin
IN
OUT
S
pin
S
pin
OUT
IN
Transfer data setting
Transfer starts
Falling of clock
Rising of clock
Falling of clock
Transfer completes
4513/4514
D
5
S
CK
S
IN
S
OUT
Serial I/O register (SI)
S
S
S
S
S
S
S
S
7
6
5
4
3
2
1
S
S
S
S
S
S
S
S
7
6
5
4
3
2
1
S
S
S
S
S
S
S
7
6
5
4
3
2
M
S
S
S
S
S
S
S
0
7
6
5
4
3
2
M
S
S
S
S
S
S
0
7
6
5
4
3
M
M
M
M
M
M
M
M
7
6
5
4
3
2
1
0
0
1
1
2
0
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