S6E2CC/C5/C4/C3/C2/C1 Series Flash Programming Specification, Document Number: 002-04913 Rev. *D
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Connection Example of RS-232C I/F
The following shows a connection example of RS-232C I/F.
When Crystal oscillator is used as the source oscillation clock
shows a connection example of FS-232C I/F when a crystal oscillator is used as a source oscillation clock.
When crystal oscillator is used, the communication will start with a baud rate of 115200[bps].
frequencies and communication baud rates at start-up.
Figure 3-2 Connection Example When Crystal Oscillator is Used
RS-232C
driver
P21/SIN0_0
VSS
P60
VCC
INITX
P22/SOT0_0
Note: The pull-up resistance values shown are for example. Select the most appropriate resistance values for each system.
MD1
MD0
Device
●
●
●
Serial write: 0
Serial write: 1
10
kΩ
X0
X1
●
●
●
10
kΩ
●
●
●
Serial write at UART
communication mode: 0
10
kΩ
10
kΩ
RS-232C
User system
Source
oscillation
clock
