Microchip Technology AVR-BLE Hardware User's Manual page 20

• Operating Current (Normal mode): 130 μA (typical)
• Shutdown Current (Deep Suspend mode): 1 μA (typical)
The BMA253 acceleration sensor is connected to the ATmega3208 through I
configurable interrupt outputs.
Info: 7-bit I
Table 3-8. BMA253 Connections
BMA253 Pin
SDA
SCL
INT1
INT2
3.5.8 LEDs
There are two user LEDs available on the AVR-BLE board that can be controlled by either GPIO or PWM. In addition,
there is one LED connected directly to the BLE module. The LEDs can be activated by driving their connected I/O
lines to GND.
Table 3-9. LED Connections
LED
Green Data LED
Red Error LED
Blue BLE LED
3.5.9 Mechanical Switch
The AVR-BLE board has one mechanical switch. This is a generic user-configurable switch that will drive the
connected I/O line to ground (GND) when it is pressed. An external resistor pulls the signal high when the switch is
not pressed.
Holding the switch during power-up can be used to put the Bluetooth module in Configuration mode. See
RN4870 BLE Module
Table 3-10. Mechanical Switch Connection
Switch
SW0
Info: The SW0 signal is pulled up by an external resistor.
©
2020 Microchip Technology Inc.
2
C address: 0x19
ATmega3208 Pin Function
PA2 TWI0 SDA
PA3 TWI0 SCL
PC2 ASYNC External Interrupt
PC3 External Interrupt
ATmega3208 Pin
PF4
PF5
—
for more information.
ATmega3208 Pin
PF3
2
C and two GPIOs for the user
Shared Functionality
MCP9844,
mikroBUS
MCP9844,
mikroBUS
—
—
Function
TCA0 WO4
TCA0 WO5
Connected to BLE module
Function
User switch
User Guide
Hardware User Guide
ATECC608A and
ATECC608A and
Shared Functionality
On-board debugger
—
RN4870
3.5.3
Shared Functionality
RN4870 and on-board
debugger
DS50002956A-page 20