Silicon Laboratories C8051F02x-DK User Manual page 8

6.4. Serial Interface (J5)
A RS232 transceiver circuit and DB-9 (J5) connector are provided on the target board to facilitate serial connec-
tions to UART0 of the C8051F020. The TX, RX, RTS and CTS signals of UART0 may be connected to the DB-9
connector and transceiver by installing shorting blocks on headers J6, J8, J9 and J10.
J6 - Install shorting block to connect UART0 TX (P0.0) to the transceiver.
J9 - Install shorting block to connect UART0 RX (P0.1) to the transceiver.
J8 - Install shorting block to connect UART0 RTS (P4.0) to the transceiver.
J10 - Install shorting block to connect UART0 CTS (P4.1) to the transceiver.
6.5. Analog I/O (J11, J20)
Several C8051F020 analog signals are routed to the J20 terminal block and the J11 connector. Header J11 pro-
vides the ability to connect DAC0 and DAC1 outputs to several different analog inputs by installing a shorting block
between a DAC output and an analog input on adjacent pins of J11. Refer to Table 3 for J20 terminal block connec-
tions and Table 4 for J11 pin definitions.
Table 3. J20 Terminal Block Pin Descriptions
Pin #
1
2
3
4
5
6
7
8 ADND (Analog Ground)
Table 4. J11 Connector Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Description
CP0+
CP0-
DAC0
DAC1
AIN0.0
AIN0.1
VREF0
Description
CP0+
CP0-
DAC0
DAC1
CP1+
CP1-
AIN0.0
AIN0.1
DAC0
DAC1
AIN0.6
AIN0.7
Rev. 0.6
C8051F02x-DK
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