C 8 0 5 1 F 5 8 0 D K
16
Rev. 0.1
8.16. Target Board Pin Assignment Summary
Some GPIO pins of the C8051F580 MCU can have an alternate fixed function. For example, pin 46 on the
C8051F580 MCU is designated P0.4, and can be used as a GPIO pin. Also, if the UART0 peripheral on the MCU is
enabled using the crossbar registers, the TX signal is routed to this pin. This is shown in the "Alternate Fixed
Function" column. The "Target Board Function" column shows that this pin is used as TX on the C8051F580 Target
Board. The "Relevant Headers" column shows that this signal is routed to pin 3 of the J17 header and pin 5 of the
J1 header. More details can be found in the C8051F58x/59x data sheet. Some of the GPIO pins of the C8051F580
have been used for various functions on the target board. All pins of the Side A MCU also connect to the 96-pin
(P1) expansion connector which is not explicitly listed below. Table 11 summarizes the C8051F580 MCU pin
assignments on the target board, and also shows the various headers associated with each signal.
Table 11. C8051F580 Target Board Pin Assignments and Headers
MCU Pin Name
Pin#
Primary
Function
Alternate Fixed
Function
Target Board
Function
Relevant Headers
P0.0
8
P0.0
VREF
VREF
J1[1], J22[1]
P0.1
1
P0.1
CNVSTR
CNVSTR
J1[2]
P0.2
48
P0.2
XTAL1
XTAL1
J1[3]*, J9[1]
P0.3
47
P0.3
XTAL2
XTAL2
J1[4]*, J10[1]
P0.4
46
P0.4
UART_TX
TX_MCU
J1[5], J17[3]
P0.5
45
P0.5
UART_RX
RX_MCU
J1[6], J17[1]
P0.6
44
P0.6
CAN_TX
CAN_TX
J1[7], J17[5]
P0.7
43
P0.7
CAN_RX
CAN_RX
J1[8], J17[7]
P1.0
42
P1.0
LIN_TX
J2[1], J17[9]
P1.1
41
P1.1
LIN_RX
J2[2], J17[11]
P1.2
40
P1.2
POTENTIOMETER
J2[3], J20[1]
P1.3
39
P1.3
LED
J2[4], J19[3]
P1.4
38
P1.4
SWITCH
J2[5], J19[1]
P1.5
37
P1.5
GPIO
J2[6]
P1.6
36
P1.6
GPIO
J2[7]
P1.7
35
P1.7
GPIO
J2[8]
P2.0
34
P2.0
GPIO
J3[1]
P2.1
33
P2.1
GPIO
J3[2]
P2.2
32
P2.2
GPIO
J3[3]
P2.3
31
P2.3
GPIO
J3[4]
P2.4
30
P2.4
GPIO
J3[5]
P2.5
29
P2.5
GPIO
J3[6]
P2.6
28
P2.6
GPIO
J3[7]
P2.7
27
P2.7
GPIO
J3[8]
P3.0
26
P3.0
GPIO
J4[1]
P3.1
25
P3.1
GPIO
J42]
Summary of Contents for C8051F58 Series
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