ST25TA512B, ST25TA02KB ST25TA02KB D, ST25TA02KB P Datasheet NFC Forum Type 4 Tag IC with up to 2-Kbit EEPROM Features Contactless interface UFDFPN5 NFC Forum Type 4 Tag, certified by the NFC Forum (1.7x1.4mm) ISO/IEC 14443 Type A 106 kbps data rate Internal tuning capacitance: 50 pF Memory Wafer Up to 256-byte (2-Kbit) EEPROM Support NDEF data structure Data retention: 200 years Endurance: 1 million erase-write cycles Read up to 256 bytes in a single command Write up to 54 bytes in a single command Chaining capability 7-byte unique identifier (UID) 128-bit password protection 20-bit event counter with anti-tearing Product identification and protection TruST25 digital signature Product status link ST25TA512B Package ST25TA02KB UFDFPN5 ECOPACK 2 ST25TA02KB-D Digital output ST25TA02KB-P GPO: configurable general purpose output driven by an open drain transistor, available on ST25TA02KB-D only enabling no DC consumption (CMOS output buffer), available on ST25TA02KB-P only. Description The ST25TA512B and ST25TA02KB devices are NFC tag ICs, with an optional general purpose output available on ST25TA02KB-D and ST25TA02KB-P. They embed an up to 2 -Kbit EEPROM, and can be operated from a 13.56 MHz RFID reader or an NFC phone. The ST25TA512B, ST25TA02KB, ST25TA02KB-D and ST25TA02KB-P devices are NFC Forum Type 4 Tags. They communicate using the ISO/IEC 14443 Type A protocol, and feature a digital signature generated by TruST25 (a set of software and procedures) used to prove the origin of the chip in cloning detection. DS12365 - Rev 2 - September 2018 www.st.com For further information contact your local STMicroelectronics sales office. ST25TA512B, ST25TA02KB, ST25TA02KB D, ST25TA02KB P Functional description 1 Functional description The ST25TA512B, ST25TA02KB, ST25TA02KB-D and ST25TA02KB-P (hereinafter referred to as ST25TAxxxB) devices are NFC tags that can be accessed from the RF interface, based on the ISO/IEC 14443 Type A standard. The ST25TAxxxB are compatible with the NFC Forum Type 4 Tag specifications and support all corresponding commands. Figure 1, Figure 2 and Figure 3 show the block diagram, respectively, of the ST25TA02KB/ST25TA512B, ST25TA02KB-D and ST25TA02KB-P devices. Figure 1. Block diagram - ST25TA02KB and ST25TA512B Analog Front-end Power UID and based on management System ISO/IEC 14443 unit area RF interface AC1 Type A standard based on ISO/IEC 14443 Internal tuning Type A standard AC0 capacitance User Digital unit memory NFC Forum Type 4 tag protocol Figure 2. Block diagram - ST25TA02KB-P Analog Front-end Power UID and based on management System ISO/IEC 14443 unit area RF interface AC1 Type A standard based on ISO/IEC 14443 Internal tuning Type A standard AC0 capacitance V DCG User Digital unit GPO memory GPO f (VDCG) NFC Forum Type 4 VSS tag protocol DS12365 - Rev 2 page 2/62