User`s guide

UDP SiM3U1xx
14 Rev. 0.2
4.15.1. P0.1, P0.2, P0.3, P0.4, P1.8, P1.7
Pins P0.1, P0.2, P0.3, P0.4, P1.7, P1.8 all connect to the capacitive sensing slider by default. To disconnect any of
these pins from the capacitive sensing slider, remove the 0  resistor that is connected to the port pin (R16 - R21).
4.15.2. P0.9, P0.10
Pins P0.9 and P0.10 both connect to the 32.768 kHz RTC by default. To disconnect this pin from the RTC, remove
the crystal Y2 on the board. Alternatively, the 0  resistors R5 and R6 can be removed to disconnect the RTC
circuit from the headers on J5.
4.15.3. P0.11
Pin P0.11 connects to the VREFGND terminal on H1 by default. By default, P0.11 is not used as VREFGND and is
instead a GPIO pin.
4.15.4. P0.12
Pin P0.12 connects to the RX pin of the CP210x by default. Alternatively, P0.12 can be enabled for use with the
VREF.
4.15.5. P0.13
Pin P0.13 connects to the TX pin of the CP210x by default. Alternatively, P0.13 can be enabled for use with the
IDAC.
P3.9
EMIF_BE0B
EXTREG_BD_A
P3.10 EBID_SCK
PORT_MATCH0
UDPBUS_SDA_A
P3.11 EBID_SDA
PORT_MATCH1
UDPBUS_SCL_A
P4.0
EPCA_CH0_MOTOR
HVGPIO0
P4.1
EPCA_CH1_MOTOR
HVGPIO1
P4.2
UART_TX_A
EPCA_CH2_MOTOR
HVGPIO2
P4.3
UART_RX_A
EPCA_CH3_MOTOR
HVGPIO3
P4.4
UART_RTS_A
EPCA_CH4_MOTOR
HVGPIO4
P4.5
LPTIMER_OUT_A
UART_CTS_A
EPCA_CH5_MOTOR
HVGPIO5
Table 6. MCU Pin Functions (Continued)
MCU Pin
MCU Card Function UDP Motherboard Signal
Default Optional
User Control
ON
Default Optional