Continental Automotive Systems Corporation 5WY8230 사용자 설명서
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The system has to operate at a DC voltage of U
b
=9V to 16V. The communication over the data line is limited
between 9V to 16V.
Out of 9V-16V range, the system must not operate, but no malfunction is allowed.
The normal operating voltage is U
Out of 9V-16V range, the system must not operate, but no malfunction is allowed.
The normal operating voltage is U
b
=12.8V ± 0.2 during the IGN off and the operation voltage is U
b
=13.8V ± 0.2
V duration IGN on.
4.3. Quiescent Current [I
s
]
If the system is at RKE –stand by condition ( no communication action active) the worst case quiescent
current must not be higher than I
s
over the whole working range [U
b
] and under worst case surrounding
characteristics normally present in plants, different climate and temperature zones where the vehicle could be
used by the customer.
The typical quiescent current must not be higher than [I
used by the customer.
The typical quiescent current must not be higher than [I
typ
] at 12.8V and at room temperature (RT=25°C)
Parameter
description
1
I
typ
@12.8V /RT
< 3.5 mA
Note:
For typical quiescent current measure with the average values during the SRx on duty cycle running (vehicles
under parking mode completely)
The quiescent current in receiver off mode (all SRx functions is stopped)
For typical quiescent current measure with the average values during the SRx on duty cycle running (vehicles
under parking mode completely)
The quiescent current in receiver off mode (all SRx functions is stopped)
Parameter
description
1
I
typ
@12.8V /RT (without LNA)
< 0.5 mA
2
I
typ
@12.8V /RT (with LNA)
< 0.5 mA
Under worst case conditions (16V, 85°C) the current I
worst case
may increase by 20% of I
typ
.
Note:
For the current measuring use only a correct tool with a maximum measurement range to 100 mA
5. Micro-processor description
The processor of the SRx was selected as 8-bit Single-chip NEC’s Micro-controller with 78KO series
µPD780XXX. Target processor is µPD780102 with masked. But for the development support, the SRx will be
used with flash memory processor µPD78F0103 in order to offer facilities to SW development.
used with flash memory processor µPD78F0103 in order to offer facilities to SW development.
The Micro controller µPD780102 has the following memories:
-
Internal ROM 16K bytes
-
High speeds RAM 768 bytes
-
Memory space 64K bytes
-
CPU system Clock 4.953 MHz with ceramic resonator
-
Support the Flash memory programming