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C8051F50x/51x
Rev. 0.2 15
P2.7 27 P2.7 GPIO J3[8]
P3.0 26 P3.0 GPIO J4[1]
P3.1 25 P3.1 GPIO J42]
P3.2 24 P3.2 GPIO J4[3]
P3.3 23 P3.3 GPIO J4[4]
P3.4 22 P3.4 GPIO J45]
P3.5 21 P3.5 GPIO J4[6]
P3.6 20 P3.6 GPIO J4[7]
P3.7 19 P3.7 GPIO J4[8]
P4.0 18 P4.0 GPIO J5[1]
P4.1 17 P4.1 GPIO J5[2]
P4.2 16 P4.2 GPIO J5[3]
P4.3 15 P4.3 GPIO J5[4]
P4.4 14 P4.4 GPIO J5[5]
P4.5 13 P4.5 GPIO J5[6]
P4.6 10 P4.6 GPIO J5[7]
P4.7 9 P4.7 GPIO J5[8]
/RST/C2CK 12 /RST C2CK /RST/C2CK P2[7], P2[5]*
C2D 11 C2D C2D P2[4]
VIO 2 VIO VIO J24[4], J18[1], TB3[1]
J1-J5[9]
VREGIN 3 VREGIN VREGIN J24[2], P2[5]*, TB3[2]
VDD 4 VDD VDD TB3[3]
VDDA 5 VDDA VDDA TB3[4]
GND 6 GND GND J1-J5[10], TB3[6]
GNDA 7 GNDA VDD TB3[5]
*Note: Headers denoted by this symbol are not directly connected to the MCU pin; the connection might be via one or more
headers and/or pin-sharing resistor(s). See board schematic for details.
Table 12. C8051F500 Target Board Pin Assignments and Headers (Continued)
MCU Pin
Name
Pin# Primary
Function
Alternate Fixed
Function
Target Board
Function
Relevant Headers
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