ZFM-70 SeriesFingerprint Identification Module
User Manual
www.zhiantec.com
Hangzhou Zhian Technologies Co.,Ltd
13
Item
Condition
Parameter
Unit
Note
Min
Typ
Max
VOL
IOL=
-
4mA
0.4
V
Logic
0
VOH
IOH= 4mA
2.4
3.3
V
Logic
1
3.
RD
(
input, TTL logic level
)
Item
Condition
Parameter
Unit
Note
Min
Typ
Max
VIL
0.6
V
Loigc
0
VIH
2.4
V
Logic
1
IIH
VIH =5V
1
mA
VIH =3.3V
30
uA
VImax
-
0.3
5.5
V
Maximum input voltage
3.2 USB communication
When it’s USB communication, definition is:
list 0.1 USB communication
Pin Num
Name
Type
Function Description
1
-
-
2
-
-
3
Vin
in
Power supply input
(
refer to 3.1.1.4 for electrical parameter
)
4
DP+
In/Out
USB data
5
DP-
In/Out
USB data
6
GND
-
Signal ground. Connected to power ground.
Note: In type ,in means input to module, out means output from module.