Code Code Reader 822 Series, Руководство по интеграции

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18
D026227_08 CR822x Single Board Decoded Scan Engine Integration Guide
Notes: 1. 100 Kilo-ohm pull-up to V
in
on open drain output; actual voltage will depend on external
impedance connected to pin
2. Depends on the brightness level of the illumination LEDs
3. Assumes inputs and outputs are tri-stated or high. If pulled low, current through pull up
resistors will need to be added
4. The USB model does not support sleep mode
5. Continuous scan
6. Duration above max operating current is 32 uS.
4.13 – Electrical Characteristics – Operating Conditions
Parameter Symbol Min Typ Max Unit Note
RS232
DC Supply Voltage, RS232 V
in
2.97 3.3 3.63 V
High level input voltage V
ih
2.0 V
Low level input voltage V
il
0.8 V
High level output voltage V
oh
2.4 V
in
1
Low level output voltage V
ol
0.55 V
Active operating current i
a
475 mA 2,5
Sleep current i
S
150 uA 3,4
Inrush current i
r
600 mA 6
USB
DC Supply Voltage, USB V
in
4.75 5.0 5.25 V
USB high level input voltage V
USBih
2.0 V
USB low level input voltage V
USBil
0.8 V
USB static output high V
USBoh
2.8 3.6 V
USB static output low V
USBol
0.3 V
Active operating current i
a
325 mA 2,5
Inrush current i
r
600 mA 6
RS232 and USB
Output leakage current i
oz
10 uA
Idle operating current i
i
95 mA
4.12 – Electrical Characteristics (DC) – Absolute Ratings (Min and Max)
Parameter Symbol Min Max Unit Note
DC Supply Voltage (RS232) V
in
2.97 3.63 V
DC Supply Voltage (USB) V
in
4.75 5.25 V
Output source or sink current Io 330 mA 1
Notes: 1. nBeeper sinks the most current. Other outputs sources a max of 16 mA.