C 8 0 5 1 F 9 7 0 D K - U G
12
Rev. 0.1
5.14. MCU Port Pin Connections
Table 3 summarizes all functions connected to each pin on the C8051F970 MCU in the target board.
Table 3. MCU Pin Functions
MCU Pin
Signal
MCU Pin
Signal
P0.0
VREF
Port Pin Header
P2.7
CS slider
Port Pin Header
P0.1
VCP_RX
Port Pin Header
P3.0
CS button
Port Pin Header
P0.2
VCP_TX
Port Pin Header
P3.1
CS button
Port Pin Header
P0.3
S1 switch
Port Pin Header
P3.2
CS button
Port Pin Header
P0.4
S2 switch
Port Pin Header
P3.3
CS button
Port Pin Header
P0.5
LED05
Port Pin Header
P3.4
CS button
Port Pin Header
P0.6
RTC crystal
P3.5
CS button
Port Pin Header
P0.7
RTC crystal
P3.6
CS button
Port Pin Header
P1.0
External Oscillator
(XTAL1)
Port Pin Header
P3.7
CS button
Port Pin Header
P1.1
External Oscillator
(XTAL2)
Port Pin Header
P4.0
CS button
Port Pin Header
P1.2
LED12
Port Pin Header
P4.1
CS button
Port Pin Header
P1.3
LED13
Port Pin Header
P4.2
CS button
Port Pin Header
P1.4
LED14
Port Pin Header
P4.3
CS button
Port Pin Header
P1.5
LED15
Port Pin Header
P4.4
CS button
Port Pin Header
P1.6
LED16
Port Pin Header
P4.5
CS button
Port Pin Header
P1.7
Si504 programming pin
Port Pin Header
P4.6
CS button
Port Pin Header
P2.0
CS button
Port Pin Header
P4.7
CS button
Port Pin Header
P2.1
CS button
Port Pin Header
P5.0
Potentiometer
Port Pin Header
P2.2
CS button
Port Pin Header
P5.1
Port Pin Header
P2.3
CS button
Port Pin Header
P5.2
C2D
Port Pin Header
P2.4
CS slider
Port Pin Header
P6.0
I2C Slave SCL
Port Pin Header
P2.5
CS slider
Port Pin Header
P6.1
I2C Slave SDA
Port Pin Header
P2.6
CS slider
Port Pin Header
Not
Recommended
for
New
Designs
