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C8051F020DK-B

P1-P3P4-P6P7-P9P10-P12
C8051F02x-DK
Rev. 0.6 7
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 # Description
1CP0+
2CP0-
3DAC0
4DAC1
5AIN0.0
6AIN0.1
7VREF0
8 ADND (Analog Ground)
Table 4. J11 Connector Pin Descriptions
Pin # Description
1CP0+
2CP0-
3DAC0
4DAC1
5CP1+
6CP1-
7AIN0.0
8AIN0.1
9DAC0
10 DAC1
11 AIN0.6
12 AIN0.7
C8051F02x-DK
8 Rev. 0.6
6.6. PORT I/O Connectors (J12 - J19)
In addition to all port I/O signals being routed to the 96-pin expansion connector, each of the eight parallel ports of
the C8051F020 has its own 10-pin header connector. Each connector provides a pin for the corresponding port
pins 0-7, +3.3 VDC and digital ground. Table 5 defines the pins for the port connectors. The same pin-out order is
used for all of the port connectors.
6.7. VDD Monitor Disable (J23)
The VDD Monitor of the C8051F020 may be disabled by moving the shorting block on J23 from pins 1-2 to pins 2-
3, as shown in Figure 3.
Figure 3. VDD Monitor Hardware Setup
6.8. VREF Connector (J22)
The VREF connector (J22) can be used to connect the VREF (Voltage Reference) output of the C8051F020 to any
(or all) of its voltage reference inputs. Install shorting blocks on J22 in the following manner:
1-2 to connect VREF to VREFD
3-4 to connect VREF to VREF0
5-6 to connect VREF to VREF1
Table 5. J12- J19 Port Connector Pin Descriptions
Pin # Description
1Pn.0
2Pn.1
3Pn.2
4Pn.3
5Pn.4
6Pn.5
7Pn.6
8Pn.7
9 +3VD (+3.3VDC)
10 GND (Ground)
1
3
2
MONEN
C8051F02x-DK
Rev. 0.6 9
6.9. Expansion I/O Connector (J24)
The 96-pin expansion I/O connector J24 is used to connect daughter boards to the main target board. J24 provides
access to many C8051F020 signal pins. Pins for +3 V, digital ground, analog ground and the unregulated power
supply (VUNREG) are also available. The VUNREG pin is connected directly to the unregulated +V pin of the P1
power connector. See Table 6 for a complete list of pins available at J24.
The J24 socket connector is manufactured by Hirose Electronic Co. Ltd, part number PCN13-96S-2.54DS, Digi-
Key part number H7096-ND. The corresponding plug connector is also manufactured by Hirose Electronic Co. Ltd,
part number PCN10-96P-2.54DS, Digi-Key part number H5096-ND.
Table 6. J24 Pin Descriptions
Pin # Description Pin # Description Pin # Description
A-1 +3 VD2 (+3.3 VDC) B-1 DGND (Digital Gnd) C-1 XTAL1
A-2 MONEN B-2 P1.7 C-2 P1.6
A-3 P1.5 B-3 P1.4 C-3 P1.3
A-4 P1.2 B-4 P1.1 C-4 P1.0
A-5 P2.7 B-5 P2.6 C-5 P2.5
A-6 P2.4 B-6 P2.3 C-6 P2.2
A-7 P2.1 B-7 P2.0 C-7 P3.7
A-8 P3.6 B-8 P3.5 C-8 P3.4
A-9 P3.3 B-9 P3.2 C-9 P3.1
A-10 P3.0 B-10 P0.7 C-10 P0.6
A-11 P0.5 B-11 P0.4 C-11 P0.3
A-12 P0.2 B-12 P0.1 C-12 P0.0
A-13 P7.7 B-13 P7.6 C-13 P7.5
A-14 P7.4 B-14 P7.3 C-14 P7.2
A-15 P7.1 B-15 P7.0 C-15 P6.7
A-16 P6.6 B-16 P6.5 C-16 P6.4
A-17 P6.3 B-17 P6.2 C-17 P6.1
A-18 P6.0 B-18 P5.7 C-18 P5.6
A-19 P5.5 B-19 P5.4 C-19 P5.3
A-20 P5.2 B-20 P5.1 C-20 P5.0
A-21 P4.7 B-21 P4.6 C-21 P4.5
A-22 P4.4 B-22 P4.3 C-22 P4.2
A-23 P4.1 B-23 P4.0 C-23 TMS
A-24 TCK B-24 TDI C-24 TDO
A-25 /RST B-25 DGND (Digital Gnd) C-25 VUNREG
A-26 AGND (Analog Gnd) B-26 DAC1 C-26 DAC0
A-27 CP1- B-27 CP1+ C-27 CP0-
A-28 CP0+ B-28 VREF C-28 VREFD
A-29 VREF0 B-29 VREF1 C-29 AIN0.7
A-30 AIN0.6 B-30 AIN0.5 C-30 AIN0.4
A-31 AIN0.3 B-31 AIN0.2 C-31 AIN0.1
A-32 AIN0.0 B-32 AGND (Analog Gnd) C-32 AV+ (+3.3 VDC Analog)
P1-P3P4-P6P7-P9P10-P12

C8051F020DK-B

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Manufacturer:
Silicon Labs
Description:
C8051F02X EVAL BRD
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