ST25DV64K

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製品概要

概要

The ST25DV04K, ST25DV16K and ST25DV64K devices are NFC RFID tags offering respectively 4 Kbit, 16 Kbit, and 64 Kbit of electrically erasable programmable memory (EEPROM). ST25DV04K, ST25DV16K and ST25DV64K offer two interfaces. The first one is an I²C serial link and can be operated from a DC power supply. The second one is a RF link activated when ST25DV04K, ST25DV16K or ST25DV64K act as a contactless memory powered by the received carrier electromagnetic wave.

In I²C mode, the ST25DV04K, ST25DV16K and ST25DV64K user memory contains up to 512 bytes, 2048 bytes and 8192 bytes, which could be split in 4 flexible and protectable areas.

In RF mode, following ISO/IEC 15693 or NFC forum type 5 recommendations, ST25DV04K, ST25DV16K and ST25DV64K user memory contains respectively up to 128 blocks, 512 blocks and 2048 blocks of 4 bytes which could be split in 4 flexible and protectable areas.

ST25DV04K, ST25DV16K and ST25DV64K offer a fast transfer mode between the RF and contact worlds, thanks to a 256 bytes volatile buffer (also called Mailbox). In addition, the GPO pin of the ST25DV04K, ST25DV16K and ST25DV64K provide data informing the contact world about incoming events, like RF field detection, RF activity in progress or mailbox message availability. An energy harvesting feature is also proposed when external conditions make it possible.

Herein after all concerned devices (ST25DV04K, ST25DV16K and ST25DV64K) are mentioned as ST25DVxxx.

特徴
I2C interface

Two-wire I²C serial interface supports 1MHz protocol

Single supply voltage: 1.8V to 5.5V

Multiple byte write programming (up to 256 bytes)

Contactless interface

Based on ISO/IEC 15693

NFC Forum Type 5 tag certified by the NFC Forum

Supports all ISO/IEC 15693 modulations, coding, sub-carrier modes and data rates

Custom fast read access up to 53 Kbit/s

Single and multiple blocks read (same for Extended commands)

Single and multiple blocks write (up to 4) (same for Extended commands)

Internal tuning capacitance: 28.5 pF

Memory

Up to 64-kbits of EEPROM (depending on version)

I²C interface accesses bytes

RF interface accesses blocks of 4 bytes

Write time:
From I²C: typical 5ms for 1 byte
From RF: typical 5ms for 1 block

Data retention: 40 years

Write cycles endurance:
1 million write cycles at 25 °C
600k write cycles at 85 °C
500k write cycles at 105 °C
400k write cycles at 125 °C

Fast transfer mode

Fast data transfer between I²C and RF interfaces

Half-duplex 256-byte dedicated buffer

Energy harvesting

Analog output pin to power external components

Data protection

User memory: 1 to 4 configurable areas, protectable in read and/or write by three 64-bit passwords in RF and one 64-bit password in I²C

System configuration: protected in write by a 64-bit password in RF and a 64-bit password in I²C
GPO

Interruption pin configurable on multiple RF events (field change, memory write, activity, Fast Transfer end, user set/reset/pulse)

Open Drain or CMOS output (depending on version)

Low power mode (10-ball and 12-pin package only)

Input pin to trigger low power mode

RF management

RF command interpreter enabled/disabled from I²C host controller

Temperature range

Range 6:
From -40 to 85 °C

Range 8:
From -40 to 105 °C
(UDFPN8 and UDFPN12 only)
From -40 to 125 °C (SO8N and TSSOP8 only, 105 °C max on RF interface)

パッケージ

8-pin, 10-ball and 12-pin packages

ECOPACK2^® (RoHS compliant)
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