User's Manual

XR-50B WIFI module
Copyright © 2019 ShenzhenJiXinInteligence Co., Ltd All Rights Reserved
Page 10 of 17
Table 2.3 Boot mode
mode
RST
PB2
PB3
download
Rising edge
Low
Low
operating
Rising edge
Low
High
High
Low
High
High
Notice：PB2 and PB3 has been pulled up in module, module has
self-reset function
3. Electrical parameters
3.1 Characteristic
Item
Conditon
Min.
Typ.
Max
Unit
Storage temp.
-
-65
Noraml
150
℃
Operating
temp.
-
-40
20
85
℃
Max. welding
temp.
IPC/JEDEC J-STD-020
-
-
260
℃
Power supply
VCC
2.7
3.3/5
5.5
V
I/O
V
IL
VDD_IO=3.3V
-0.3
-
1.32
V
V
IH
VDD_IO=3.3V
2.06
-
3.6
V