Data Sheet

NUC123
May 3, 2017 Page 23 of 99 Rev.2.04
NUC123 SERIES DATASHEET
SPI2_MOSI0
I/O
SPI2 1
st
MOSI (Master Out, Slave In) pin
13
9
PB.7
I/O
Digital GPIO pin
UART1_nCTS
I
UART1 clear to send input pin
SPI2_MISO0
I/O
SPI2 1
st
MISO (Master In, Slave Out) pin
14
10
6
LDO_CAP
P
LDO output pin
15
11
7
V
DD
P
Power supply for I/O ports and LDO source for internal PLL
and digital function. Voltage range is 2.5V ~ 5V.
16
12
8
V
SS
P
Ground
17
13
9
USB_VBUS
USB
Power supply from USB host or hub
18
14
10
USB_VDD33_CAP
USB
Internal power regulator output 3.3V decoupling pin
19
15
11
USB_D-
USB
USB differential signal D-
20
16
12
USB_D+
USB
USB differential signal D+
21
PB.0
I/O
Digital GPIO pin
UART0_RXD
I
UART0 data receiver input pin
22
PB.1
I/O
Digital GPIO pin
UART0_TXD
O
UART0 data transmitter output pin
23
PB.2
I/O
Digital GPIO pin
UART0_nRTS
O
UART0 request to send output pin
TM2_EXT
I
Timer2 external capture input pin
24
PB.3
I/O
Digital GPIO pin
UART0_nCTS
I
UART0 clear to send input pin
TM3_EXT
I
Timer3 external capture input pin
25
17
PC.5
I/O
Digital GPIO pin
SPI0_MOSI1
I/O
SPI0 2
nd
MOSI (Master Out, Slave In) pin
UART0_TXD
O
UART0 data transmitter output pin
26
18
PC.4
I/O
Digital GPIO pin
SPI0_MISO1
I/O
SPI0 2
nd
MISO (Master In, Slave Out) pin
UART0_RXD
I
UART0 data receiver input pin
27
19
13
PC.3
I/O
Digital GPIO pin
SPI0_MOSI0
I/O
SPI0 1
st
MOSI (Master Out, Slave In) pin
I2S_DO
O
I
2
S data output pin
28
20
14
PC.2
I/O
Digital GPIO pin
SPI0_MISO0
I/O
SPI0 1
st
MISO (Master In, Slave Out) pin
I2S_DI
I
I
2
S data input pin
29
21
15
PC.1
I/O
Digital GPIO pin
SPI0_CLK
I/O
SPI0 serial clock pin