Table of Contents
Advertisement
Bosch Sensortec"|
Application Board 3.0 User Guide
4.6.6
Microcontroller
The Application Board 3.0 uses the uBlox NINA-B302 Bluetooth low energy module based on the nRF52840 chipset
from Nordic Semiconductor. The nRF52840 among other features supports USB2.0 and Bluetooth Low Energy 5.0
Details about the module and the chipset can be found in the NINA-B302
respectively.
4.6.7
External flash
A Winbond W25M02GW 2Gbit NAND Flash is connected to the Microcontroller using SPI. The external flash is used
primarily for storing files, particularly sensor data log files. The files can be accessed from a host by switching the device
to the pre-loaded MTP firmware mode and connecting via USB.
4.6.8
Status LEDs
The microcontroller controls the RGB LED. Details on the LED is controlled is found in Table 2 Application Board 3.0 pin
description under the LED-CTRL bus.
4.6.9
Power Good and Charging LEDs
The microcontroller does not control these LEDs, however they indicate the status of the board. The Power Good or
PGOOD for short indicates that the board is powered over USB. The Charge LED indicates the charge status connected
Li-ion battery. If a battery is not present or if the charging is complete, the LED is turned off.
4.6.10 Li-Ion battery connector
The Li-ion battery connector allows for the connection of a Lithium Ion or Lithium Polymer battery. Do not
connect any other type of batteries as this could damage the circuitry of the board and lead to an unexpected
behavior, and possibly heating or a fire.
Pin descriptions
Bus name
Pin name
SHUTTLE-GPIO
GPIO0
GPIO1
GPIO2/INT1
GPIO3/INT2
CS
SCK/SCL
SDO
SDI/SDA
GPIO4/OCSB
GPIO5/ASCx
GPIO6/OSDO
GPIO7/ASDx
PROM-RW
SPI-FLASH
SPI-FLASH-MISO
SPI-FLASH-MOSI
SPI-FLASH-SCK
SPI-FLASH-CS
SPI-FLASH-HOLD
SPI-FLASH-WP
I2C-TEMP
I2C-TEMP-SDA
I2C-TEMP-SCL
Modifications reserved | Data subject to change without notice
Table 2 Application Board 3.0 pin description
NINA-B302 pin
nRF52840 pin
GPIO_2
P0.14
GPIO_1
P0.13
GPIO_35
P1.01
GPIO_34
P1.08
GPIO_5
P0.24
GPIO_4
P0.16
GPIO_3
P0.15
GPIO_43
P0.06
GPIO_37
P1.03
GPIO_36
P1.02
GPIO_39
P1.11
GPIO_38
P1.10
GPIO_27
P0.05
GPIO_48
P0.21
GPIO_50
P0.20
GPIO_52
P0.19
GPIO_51
P0.17
GPIO_47
P0.23
GPIO_49
P0.22
GPIO_23
P0.29
GPIO_42
P0.26
datasheet
and nRF52840
Description
Shuttle pin 4
Shuttle pin 5
Shuttle pin 6
Shuttle pin 7
Shuttle pin 8
Shuttle pin 9
Shuttle pin 10
Shuttle pin 11
Shuttle pin 12
Shuttle pin 13
Shuttle pin 14
Shuttle pin 15
Shuttle pin 16, 470ohm pull-up resistor
4.7kohm pull-up
4.7kohm pull-up
Document number: BST-DHW-AN008-00
10 | 22
product specification
Advertisement
Table of Contents
