Siemens TC65 - Figure 5: Power-On with Operating Voltage at BATT+ Applied before Activating IGT

TC65 Hardware Interface Description
Strictly confidential / Draft
s
TC65_HD_V00.521 Page 27 of 99 24.05.2005
If configured to a fix baud rate (AT+IPR0), the module will send the URC “^SYSSTART” or
“^SYSSTART AIRPLANE MODE” to notify that it is ready to operate. If autobauding is
enabled (AT+IPR=0) there will be no notification.
EMERG_RST
VEXT
TXD0/TXD1/RTS0/RST1/DTR0 (driven by the application)
CTS0/CTS1/DSR0/DCD0
ca. 500 ms
Serial interfaces
ASC0 and ASC1
Undefined
Active
PWR_IND
t = 400ms
min
120ms
BATT+
IGT
HiZ
Figure 5: Power-on with operating voltage at BATT+ applied before activating IGT