1.2.2.2 Host MCU Board with mikroBUS Socket via mikroBUS Interface

The RNBD451 Add On Board can also be used by host MCU boards with mikroBUS sockets using the control interface. The following table shows how the pinout on the RNBD451 Add On Board mikroBUS interface corresponds to the pinout on the mikroBUS socket.

Table 1-3. RNBD451PE Connection to mikroBUS Interface

Pin No on mikroBUS

Standard Pin on mikroBUS

Pin on RNBD451PE Module

Description

1

AN

PB2, UART MODE SWITCH

UART mode switch

2

RST

NMCLR

RNBD451PE module reset pin

3

CS

PA4, UART RTS

RNBD451PE module UART RTS

4

SCK

PB3, BT_STATUS_IND1

Bluetooth Low Energy status indication 1

5

MISO

PB7, BT_STATUS_IND2

Bluetooth Low Energy status indication 2

6

MOSI

PA2, UART_TX_IND

UART transmit indication from the RNBD451PE module

7

3.3V

3.3V from host MCU socket

8

GND

GND

GND

9

GND

GND

GND

10

5V

NC

11

SDA

NC

12

SCL

NC

13

RX

PB6, UART RXD

RNBD451PE module UART RXD

14

TX

PA5, UART TXD

RNBD451PE module UART TXD

15

INT

PA6, UART CTS

RNBD451PE module UART CTS

16

PWM

PB4, UART RX INDICATION

UART RX indication to RNBD451PE module