sclt3-8bt8-tr STMicroelectronics, sclt3-8bt8-tr Datasheet - Page 16

• Manufacturer Part Number: sclt3-8bt8-tr
• Description: Protected Digital Input Termination With Serialized State Transfer
• Manufacturer: STMicroelectronics

Functional description
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Table 5.
Figure 13. Logic status of the SCLT power supply
POR
1
1
1
0
0
Power supply status
Power supply status
MISO
MISO
POR
POR
UVA
UVA
/CS
1
0
0
1
0
Logic state of the SPI output versus the power loss signal POR and the
SPI chip select /CS
Loss of power
Loss of power
MISO
Z
1
0
Z
0
~5V
~5V
/MISO
Z
0
1
Z
1
Doc ID 15191 Rev 3
9V
9V
15V
15V
V
V
C
C
= V
= V
Normal with no communiction
Normal with communication
Normal with communication
Power loss with no communication
Power loss with communication attempt
CC
CC
UV Alarm
UV Alarm
- R
- R
/CS = Lo
/CS = Lo
/CS = Lo
/CS = Lo
/CS = Lo ; IN
/CS = Lo ; IN
C
C
x (I
x (I
C
C
+ I
+ I
17V
17V
11V
11V
ASIC
ASIC
DD
DD
)
)
= MISO (non inverting isolator)
= MISO (non inverting isolator)
SPI status
13V
13V
19V
19V
Power good
Power good
IEC61131-2 level
IEC61131-2 level
SCLT3-8BT8
V
V
V
V
CC
CC
C
C