Ercogener GenPro 25e - Bus ONE-WIRE (Option S0433 B); Figure 11: Internal Electrical Scheme of the One Wire Bus

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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCOGENER reserves the right to make any modification.
Dct_427_02
3.5.3 Bus ONE-WIRE (Option S0433B)
This option Bus ONE-WIRE (S0433B) is managed by the processor and only manages « serial number »
interface in read-only mode 64 bits.
Table 19 : One Wire Bus description
Signal
Connector 14 pins
Pins number
I/O
Kind of I/O
Description
Bus One Wire
GND
2
3
I/O
Analog
Bus One Wire
Corresponds to wires
Blue for Bus One Wire
Black for GND
see ANNEX 1 - 4-pins Micro-FIT cable (Power supply) et ANNEX
- 2-wire Micro FIT cable connector (Input/Output)
Table 20 : Bus ONE-WIRE - Electrical characteristics
Characteristics
Symbols
Conditions
Min.
Typ.
Max.
Unit
Input Voltage – Low
V
IL
-0.3
0.8
V
DC
Input Voltage – High
V
IH
2
3.5
V
DC
Hysteresis Voltage
V
Hys
0.4
0.7
V
DC
Input Leakage Current
I
LEAK
-4
38
µA
DC
Input capacitance
C
IN
14
pF
Output Low-level Voltage
V
OL
0.4
V
DC
Output High-level Voltage
V
OH
2.8
V
DC
Output Current
I
o
±16
mA
DC
Figure 11 : Internal electrical scheme of the One Wire bus
Assembly working with identification keys DS1990 iButton® from the MAXIM manufacturer.
The integrator has the responsibility to protect the input from electrical perturbations and to
respect the functioning parameters values.