NodeMCU-BU01Specification V 1.0
C opyright © Shenzhen Ai-Thinker Technology Co.,Ltd All Rights Reserved 2020
11
22
V3.3
3.3 V Power supply
23
GND
Ground grounding
24
VBAT
Vbat MCU battery power
25
SCL
SCL pin on MCU, default pull up 3.3 V, internal connect
sensor SCL pin
26
SDA
SDA pin on MCU, default pull up 3.3 V, internal connect
sensor SDA pin
27
PB8
PB8 on the MCU
28
PB9
PB9 on the MCU
29
PB5
PB5 on the MCU
30
PB4
PB4 on the MCU
31
PB3
PB3 on the MCU
32
PA15
PA15 on the MCU
33
V3.3
3.3 V Power supply
34
RST
Reset pin on BU01 and connected to MCU PB12
35
WAKEUP
the wake-up pin on the BU01 and is connected to the PB13
of the MCU. when set to a valid high level state, the
WAKEUP pin brings the DW1000 into working mode from a
dormant or DEEPSLEEP state. If not used, the pin can
be grounded
36
EXTON
The EXTON pin on the BU01 is connected to the MCU PB14
and the external device is enabled. position and remain
active during wake-up until the device enters sleep
mode. can be used to control external DC-DC converters
or other circuits not required when the device is in
sleep mode to minimize power consumption
37
U1RX
UART1-RX on the MCU
38
U1TX
UART1-TX on the MCU
39
PA8
PA8 on the MCU
40
PB15
PB15 on the MCU
DIO
Swdio
SWDIO feet on MCU, default flash pin
CLK
Swclk
SWDIO feet on MCU, default flash pin
