ST25TA02K-PC6C5 datasheet(11/64 Pages) STMICROELECTRONICS

Part #	ST25TA02K-PC6C5

Description	NFC Forum Type 4 Tag IC with 2-Kbit EEPROM and General Purpose Digital Output

PDF	64 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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11 / 64 page

DocID027794 Rev 2

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ST25TA02K-P

Signal descriptions

2.1

Antenna coil (AC0, AC1)

These inputs are used to connect the device to an external coil exclusively. It is advised not

to connect any other DC or AC path to AC0 or AC1.

When correctly tuned, the coil is used to access the device using NFC Forum Type 4

commands.

2.2

Ground (VSS)

VSS, when connected, is the reference for the VDCG supply voltage for all pads, even AC0

and AC1.

2.3

GPO Supply voltage (VDCG)

This pin can be connected to an external DC supply voltage. It only supplies the GPO driver

block.

2.3.1

Operating supply voltage VDCG

Prior to checking ST25TA02K-P GPO, a valid and stable VDCG voltage within the specified

[VDCG(min), VDCG(max)] range must be applied.

To maintain a stable DC supply voltage, it is recommended to decouple the VDCG line with

suitable capacitors (usually of the order of 10 nF and 100 pF) close to the VDCG/VSS

package pins.

This voltage must remain stable and valid until the end of the GPO usage by the

ST25TA02K-P.

2.3.2

Power-up conditions

The VDCG rise time must not vary faster than 1 V/µs.

ST25TA02K-PC6C5 Datasheet(PDF) 11 Page - STMicroelectronics