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CLOUD-ST25TA
NFC Forum Type 4 Tag IC demonstration board
Data brief
Features
 Ready to use printed circuit board
– ST25TA02K-P NFC/RFID Tag in UFDFPN5
ECOPACK®2 package
– 19 mm single layer inductive antenna
etched on the PCB
 Contactless interface
– NFC Forum Type 4 Tag
– ISO/IEC 14443 Type A
– 106 kbps data rate
– Internal 50 pF tuning capacitance allowing
small inductive antenna design
 Memory
– 256 Byte (2 Kbit) EEPROM with NDEF
data support
– 200 years data retention
– 1 million erase-write cycles endurance
– 128 bit password data protection
– 20 bit event counter for read or write
access with anti-tearing feature
 Digital pad
– Configurable general purpose output
(GPO) indicating, for example, RF field
detection
 Associated Android application
– Android application for Smartphone used
as NFC Reader is available on Google Play
website or www.st.com
Table 1. Device Summary
Reference
Order Code
CLOUD - ST25TA
CLOUDST25TA02K-P
Figure 1. CLOUD-ST25TA board picture (top view)
June 2015
DocID027969 Rev 1
For further information contact your local STMicroelectronics sales office.
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Description
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CLOUD-ST25TA
Description
The CLOUD-ST25TA is a ready-to-use demo board intended to evaluate the ST25TA02K-P.
The ST25TA02K-P device is a dynamic NFC/RFID tag IC with a digital General Purpose
Output embedding a 2 Kbit EEPROM that supports NDEF Tag Application per NFC Forum
Type 4.
The device communicates over the ISO/IEC 14443 Type A protocol and is fully powered by
the RF field. In case the GPO output is used, an external reference voltage is required to set
the high level voltage of the GPO signal in order to be directly compatible with the IO voltage
of the MCU or Host without the need of any level shifter.
The GPO signal of ST25TA02K-P product is active HIGH when asserted and thus can be
used as a rising edge interrupt. It may be configured through the RF interface for various
uses like indicating Field Detection (by default) amongst others to wake-up an MCU or Host
like Bluetooth or Wifi chipset.
Figure 2. Functional Block diagram
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Revision history
Revision history
Table 2. Document revision history
Date
Revision
23-Jun-2015
1
Changes
Initial release.
DocID027969 Rev 1
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CLOUD-ST25TA
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