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SIM548C Hardware Design
Figure 18: Connection of software upgrade
Figure 19: Connection of software debug
The serial port and the debug port don't support the RS232 level and it only supports the CMOS
level. Please refer to the table of Logic levels of serial ports pins for details about the voltage level.
You should add the level converter IC between the DCE and DTE. If you connect it to the
computer. Please refer to the following figure.
48
SIM548C_HD_V1.01
09.05.2008
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