UM-B-114
DA14531 Development Kit Pro Hardware User Manual
User Manual
Revision 1.4
23-Apr-2020
34 of 82
© 2021 Dialog Semiconductor
5.3.7
mikroBUS 2 Interface
●
mikroBUS 2 is used for DA14531 PRO-DB
●
Two female headers (8 position 0.100", through hole, socket type) must be mounted on J17 and
J18
●
DA14531 FCGQFN24 PRO-DB is suitable for mikroBUS operation due to its available pins
●
SPI data bus is shared with SPI data flash or UART
Table 13: mikroBUS 2 Signals
Function
The Signals
Comments
PRO-MB
DA14531 PRO-DB
Available on Headers
J2
FCGQFN24
WLCSP17
MOSI_2
J17:5
P2_0
P0_0
P0_0
Also used from SPI Data Flash or
UART.
SCL_2
J18:5
P2_2
P0_2
P0_2
MISO_2
J17:6
P2_3
P0_3
P0_3
SCK_2
J17:4
P2_4
P0_4
P0_4
TX_2
J18:4
P2_5
P0_5
P0_5
Used for SWDIO of WLCSP17.
Used for single-wire UART of
FCGQFN24.
RX_2
J18:3
P2_6
P0_6
CS_2
J17:3
P2_7
P0_7
SDA_2
J18:6
P2_8
P0_8
PWM_2
J18:1
P2_9
P0_9
BRSTn
J17:2
P3_0
It is not enabled.
BRSTn can be connected to P0_10
(SWDIO) by mounting R11 on
FCGQFN24 PRO-DB.
V3
J17:7
V
BAT_HIGH
The same voltage rail applied to
V
BAT_HIGH
pin of DA14531 SoC.
V5
J18:7
Voltage provided from USB port,
V
BUS_HUB
= 5 V through R305.
Figure 29: MikroBus 2 Circuit
