Leakage Current In Power-Down Mode; Figure 8: Signal States During Turn-Off Procedure - Siemens AC75 Hardware Interface Description

AC75 Hardware Interface Description
Strictly confidential / Preliminary
PWR_IND
VEXT
CTS0/CTS1/DSR0/DTR0
TXD0/TXD1/RTS0/RTS1/DTR0 (driven by the application)
Defined
Interface pins
Note 1: Depending on capacitance load from host application
3.3.3.2

Leakage Current in Power-Down Mode

The leakage current in Power-down mode varies depending on the following conditions:
•
If the supply voltage at BATT+ was disconnected and then applied again without starting
up the AC75 module, the leakage current ranges between 90µA and 100µA.
•
If the AC75 module is started and afterwards powered down with AT^SMSO, then the
leakage current is only 50µA.
Therefore, in order to minimize the leakage current take care to start up the module at least
once before it is powered down.
AC75_HD_V00.202
See note 1

Figure 8: Signal states during turn-off procedure

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27.04.2006