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HTEB1
User manual
Issue 0.2 Page 12 07/2002
1.7 Start-Up instructions
1.7.1 Installing the HTEB1
Installing the HTEB1 requires a power supply and a serial connection to a
host computer (common PC). The serial communications cable for
connecting the HTEB1 to a host computer is supplied and has 1:1
connectivity.
Figure 1.8 shows how to connect the HTEB1 to a PC and to a power supply
1.7.2 Power Supply
The HTEB1 hardware requires a power supply of 7,5V DC at minimum.
Please don’t use a power supply with more the 9V DC because the on
board voltage regulator becomes very hot!
The HTEB1 power consumption is about 180mA with LCD-backlight ON.
Since total power consumption can vary widely due to external
connectors, H8/3664F port state, use a power supply capable of providing
at least 300mA at +7,5V DC.
The design includes circuitry for reversed polarity protection.
Please watch on GND (ground) connection between power supply, eval-
board and PC.
Power supply
7,5-9V DC
PC with COM1/2