EVK-ANNA-B112 - User Guide
UBX-18018539 - R01
Product description
Page 13 of 29
J2
1
A0
Analog input
IO_24
P0.04
Analog function capable IO
2
A1
Analog input
IO_23
P0.05
Analog function capable IO
3
A2
Analog input
IO_28
P0.28
Analog function capable IO
4
A3
Analog input
IO_27
P0.29
Analog function capable IO
5
A4
Analog input
UART_DSR/
IO_26
P0.30
Analog function capable IO,
UART_DSR signal on ANNA-B1
6
A5
Analog input
UART_DTR/
IO_25
P0.31
Analog function capable IO,
UART_DTR signal on ANNA-B1
J3
1
D0/RX
Digital I/O, UART RX
UART_RXD P0.02
UART_RXD signal on ANNA-B1
2
D1/TX
Digital I/O, UART TX
UART_TXD P0.03
UART_TXD signal on ANNA-B1
3
D2
Digital I/O
UART_CTS P0.19
UART_CTS signal on ANNA-B1
4
D3
Digital I/O
UART_RTS P0.11
UART_RTS signal on ANNA-B1
5
D4
Digital I/O
IO_29
P0.27
RED
6
D5
Digital I/O
IO_31
P0.26
BLUE
7
D6
Digital I/O
IO_22
P0.10
Signal not connected by defualt,
configured for NFC use
8
D7
Digital I/O
IO_21
P0.09
Signal not connected by defualt,
configured for NFC use
J4
1
D8
Digital I/O
IO_13
P0.14
2
D9
Digital I/O
IO_38
P0.24
SWITCH_2 on ANNA-B1.
This signal is pulled low when the
button SW2 is pressed
3
D10
Digital I/O
IO_36
P0.22
4
D11
Digital I/O
IO_37
P0.23
5
D12
Digital I/O
IO_16
P0.18
6
D13
Digital I/O
IO_45
P0.20
7
GND
Ground
GND
8
AREF
Analog reference voltage level
-
-
Not connected
9
SDA
I2C data signal
IO_14
P0.15
10
SCL
I2C clock signal
IO_15
P0.16
Table 8: Pinout of the Arduino UNO R3 compatible interface
1.7.1
Arduino shield compatibility
The EVK-ANNA-B112 has an I/O voltage range of 1.7-3.6 V. It can therefore be used only with shields
that also support an I/O voltage within this range.
The EVK-ANNA-B112 has a pinout that is compatible with some Arduino or Arduino inspired shields.
This section describes the features of the EVK pins that a shield must comply with:
•
IOREF: The I/O voltage level of the ANNA-B112 module is 3.3 V by default, but the EVK can be
modified to allow other voltages (1.7-3.6 V).
•
RESET: Is connected to the RESET button (SW0).
•
3.3 V: A regulated 3.3 V output. Should not be used as a voltage supply input, use the VIN pin
instead.
•
5 V: Is only a 5 V supply output if the EVK is being powered by USB. If any other power
configuration is used, this pin will be unconnected (floating). It is safe to connect an external 5 V
supply to this pin even when a USB cable is connected. This pin cannot be used to power the
board, use the VIN pin instead.
•
VIN: May be used as a 5 -12 V supply input to power the EVK-ANNA-B112.
•
Pin 0 (RX): Is connected to the ANNA-B112 UART RX pin (ANNA pin 23).
•
Pin 1 (TX): Is connected to the ANNA-B112 UART TX pin (ANNA pin 22).
