Opticon MDI-4000 Series, Руководство по последовательному интерфейсу, Страница: 50 / 139

MDI-4000 Series Serial Interface Manual
38
Power Mode Descriptions
Status Description
Read The scan engine is reading a barcode. Both the white LED and the green
aiming light are on.
Standby The scan engine is ready to read a barcode.
Low Power The scan engine is in a low power consumption state. You can configure the
amount of time the scan engine remains in standby mode before it changes to
low power mode. For more information, see
“Low Power” on page 41
.
AIM When the AIM signal is ON, the green aiming light is on.
5.2 Current Consumption
Before integrating the scan engine, make sure you are familiar with the current consumption
specifications.
5.2.1 Absolute Maximum Ratings
Note: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent
damage to the device. These are stress ratings only, and functional operation of the device at
these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute maximum rated conditions for extended periods
of time may affect device reliability.
Item Symbol Rated Value Unit
Power Supply Voltage V
CC
-0.3 to 7.0 V
Input Voltage V
I
-0.3 to V
CC
+0.3 V
5.2.2 Recommended Operating Conditions
Item Symbol Conditions Min. Typ. Max. Unit
Supply Voltage V
CC
3.0 3.3/5.0 5.5 V
Input
Voltage Low V
IL
0 - 0.15 V
High V
IH
V
CC
-0.4 - V
CC
V
Output
Voltage Low V
OL
I
OL
= 600µA - 0.55 V
High V
OH
I
OH
= -20µA 0.67* V
CC
- V
CC
V
Output
current Low I
OL
V
CC
= 3.0V -4 mA
High I
OH
V
CC
= 3.0V 4 mA
5.2.3 Peak Current Consumption
(V
CC
= 3.3V/5.0V T
A
= 25°C)
Item State Symbol Conditions Min. Typ. Max. Unit
Peak Rush Current * Boot I
PK
- - 800 1000 mA
* Measured at the MDI-4xx0 connector. Peak current width is 800
μs (Typ).