Specifications

BL-M3881NT1 SPEC
石头世纪科技有限公司 内部文档 7
18
SDIO_DATA_0
I/O
SDIO data line 0
19
SDIO_DATA_1
I/O
SDIO data line 1
20
GND
P
Ground
21
NC
/
--No Connection,keep Floating
22
VDIO
P
Supply voltage for IO 3.3V or 1.8V,i/o supply by
host
23
NC
/
--No Connection,keep Floating
24~30
NC
/
--No Connection,keep Floating
31
GND
P
Ground
32
NC
/
--No Connection,keep Floating
33
GND
P
Ground
34~35
NC
/
--No Connection,keep Floating
36
GND
P
Ground
37~38
NC
/
--No Connection,keep Floating
39
WL_RST
I/O
WI-FI reset signal PIN, setting to low asserts a
global reset, setting to high desserts a global reset
(GPIO7)
40
GPIO5
O
Device to wake-up host, rising edge trigger (GPIO5)
41~44
NC
/
--No Connection,keep Floating
I: input O: output P: power
3.6 Schematic