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ST25R200 Datasheet(PDF) 12 Page - STMicroelectronics

Part # ST25R200
Description  NFC/HF RFID reader IC
PDF  88 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R200 Datasheet(HTML) 12 Page - STMicroelectronics

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Figure 6. State diagram
Power-down
Mode
Ready
Mode
POR
en = 1
Wake-up
Mode
en = 0
Reset
Mode
RESET=0
RESET=1
RESET
=1
RESET=1
MS71320V1
5.2
Power-on sequence
Once powered, the device enters the PD mode. The content of all registers is set to its default state.
One can set the device into any other operation mode by changing the configuration on the operation register.
Transiting the device to RD mode and prepared for communication comprises on:
Applying appropriate configuration on registers: Operation and General
Setting en = 1 and waiting for the device to get ready and with the oscillator stable (I_osc/osc_ok)
The internal voltage regulators must be configured. It is recommended to use direct command adjust
regulators to improve the system PSRR
Once completed, the device is ready for communication.
ST25R200
Application information
DS13658 - Rev 2
page 12/88



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