User's Manual

XR-31B WIFI module
Copyright © 2019 Shenzhen JiXinInteligence Co., Ltd All Rights Reserved
Page 9 of 14
Table 2.3 Start mode
mode
RST
PB2
PB3
Download
rising
edge
low
low
Run
rising
edge
low
high
high
low
high
high
Notice:PB2 and PB3 had beenpulled up in module,module has self-reset function
3. Electrical parameters
3.1 Electrical characteristics
parameter
test condition
min
typ
max
unit
Storage
Temp.
-
-55
normal
150
℃
Work temp.
-
-40
20
85
℃
Max welding
temp.
IPC/JEDEC J-STD-020
-
-
260
℃
Supply volt.
VCC
2.7
3.3/5
5.5
V
I/O
V
IL
VCC_IO=3.3V
-0.3
-
1.32
V
V
IH
VCC_IO=3.3V
2.06
-
3.6
V