Technical information

Configuration
18 G24/H24 - Developer’s Kit August 31, 2009
RS232-2
The 9-pin, D-type RS232-2 serial port (J330) is the secondary interface to the G24/H24. The
G24/H24 RS232 signals are active-low CMOS-level signals (0-2.7 V), which are converted by
the Developer Board to standard RS232 levels for PC communications. The RS232-2 Connector
Pinout (J330) is shown in Table 2-5.
Note: Only 4 RS232 signals are used.
USB
The USB interface connector (J380) is a standard Mini-B USB device interface. The G24/H24
USB signals are routed directly to this connector. The USB Connector pinout (J380) is shown in
Table 2-6.
Data Logger
The 9-pin D-type Data Logger serial port (J350) is used for development and is applicable to the
G24 device only.
Table 2-5: RS232-
2 Connector Pinout (J330)
Pin # Description DTE I/O
1 Not used
2 RXD In
3 TXD Out
4 Not used
5 Ground
6 Not used
7 RTS Out
8 CTS In
9 Not used
Table 2-6: USB Connector Pinout (J380)
Pin # Description
1 VCC
2 D-
3 D+
4 UID (for development
only)
5 Ground