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ST92163 DEMO BOARD CHARACTERISTICS
2.2 FEATURES AND FUNCTIONS DESCRIPTION
2.2.1 RESET BUTTON
A reset button is provided for resetting the ST92163 microcontroller. The inverted reset signal
is available to the user via pin 30 of the I/O expansion connector.
2.2.2 RS232 CONNECTOR
The ST92163 Demo Board has one DB9 male connector and uses a standard RS232 cable
for communication between the ST92163 microcontroller and an external peripheral or a PC.
The following jumper configuration allows the developer to connect RS232 signals directly to
the ST92163 microcontroller . Note that all DB9 connector (P1) signals are available via the I/
O expansion connector (pins 1 to 7 and pin 34) and via the I/O connectors TP1 (pins 26 to 32)
and TP2 (pin 31).
Furthermore the ST92163 Demo Board allows the use of special peripherals (RS232 mouse
for example) by connecting the pin 7 of the DB9 connector to the VCC through a jumper (JP3).
Table 1. RS232 signal jumper configurations
2.2.3 I2C CONNECTOR
The ST92163 Demo Board has one connector (P2) for I2C communication.
The following table shows the correspondence between I2C connector pins and ST92163 mi-
crocontroller pins.
Table 2. I2C connector and ST92163 pin correspondence
2.2.4 TRIMMER
A trimmer (R8) let you exercise the Analog to Digital Converter. You only need to put a jumper
on JP8 to connect the ADC IN pin (P6.2) to the trimmer.
2.2.5 LEDS
Three LEDs can be directly driven from microcontroller Port 6. They can be used to test the
ST92163 I/Os. You only need to put jumpers on JP10, JP11 and JP12 to use the LEDs
jumper on
RS232 signal
JP3
RTS/VCC
JP4
CTS/P3.4
JP5
RTS/P3.1
JP6
TD/P3.0
JP7
RD/P3.5
I2C connector pin
ST92163 pin
1
SDA/P6.0
2
SCL/P6.1
3
VCC (5V)
4
GND
