rtd cpuModules CMA24BT, Руководство пользователя

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14 CMA24BT cpuModule BDM-610000087 Rev A
Serial Ports - RS-422/485
V
OD1
Differential Output R
L
= 100 Ohm 2.0 V
V
OD2
Differential Output R
L
= 54 Ohm 1.5 V
V
OC
Common Mode
Output
R
L
= 54 or 100
Ohm
3.0 V
V
TH
Differential Input
Threshold
-200 mV -50 mV
V
I
Absolute Max Input
Voltage
-18 V 18 V
aDIO
V
OH
Output Voltage
High
I
OH
= –29 mA 2.4 V 3.3 V
V
OL
Output Voltage Low I
OL
= 17 mA 0.0 V 0.5 V
V
IH
Input Voltage High — 1.8 V 5.5 V
V
IL
Input Voltage Low — -0.3 V 0.8 V
I
ADIOvc
c
Supply current — 500 mA
T
MIN
Update Interval — 1ms
Utility Port 2.0 Connector (CN5)
V
RTC
Input RTC Voltage
1
— 2.3 V 3.6 V
I
RTC
RTC Battery
Current
— < 4 uA
I
UTILvc
c
Utility Supply
Current
— 500 mA
1. Only required to maintain date and time when power is completely removed from the
system. Not required for board operation.
Table 4 Electrical Characteristics
Symbo
l
Parameter Test
Condition
Min. Max.