iCLASS SE Reader Module Hardware Developer’s Guide, SE3200-902, Rev. C.1
February 2014 Page 26 of 52
5.9 RF Interface (125 kHz/Prox)
Table 16: 125 kHz RF Interface - Electrical Characteristics Power Supply
PROX_TX1
PROX_TX2
Output Peak Current 200 mA
5.10 Start Up Voltages
Although power supply rise time is not critical for the module, the best way to control
the module at start up is by actively controlling the reset line. If the reset line is held
low until the power supply has stabilized then the unit will start when the reset line is
released with full functionality and meet all the specifications.
If you do not control the reset line then when the input voltage reaches around 2V the
module will start to work but cannot be guaranteed to meet specifications until the
voltage reaches the minimum specified in Section 5.3 above. The main issue is that the
RF power will be reduced when the input voltage is below the minimum.
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