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ST25DV02K-W2 Dataheets PDF



Part Number ST25DV02K-W2
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description Dynamic NFC/RFID tag-IC
Datasheet ST25DV02K-W2 DatasheetST25DV02K-W2 Datasheet (PDF)

ST25DV02K-W1 ST25DV02K-W2 Datasheet Dynamic NFC/RFID tag IC with up to two PWM outputs and 2-Kbit EEPROM SO8 TSSOP8 Product status link ST25DV02K-W1 ST25DV02K-W2 Features Pulse width modulation outputs • Two independent outputs: 1x PWM output on ST25DV02K-W1, 2x PWM outputs on ST25DV02K-W2 • From 488 Hz to 31250 Hz • 62.5 ns pulse width resolution: from 15-bit resolution at 488 Hz to 9-bit resolution at 31.25 kHz • Accuracy: ±10% over temperature range • No need for external oscillator • Suppl.

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ST25DV02K-W1 ST25DV02K-W2 Datasheet Dynamic NFC/RFID tag IC with up to two PWM outputs and 2-Kbit EEPROM SO8 TSSOP8 Product status link ST25DV02K-W1 ST25DV02K-W2 Features Pulse width modulation outputs • Two independent outputs: 1x PWM output on ST25DV02K-W1, 2x PWM outputs on ST25DV02K-W2 • From 488 Hz to 31250 Hz • 62.5 ns pulse width resolution: from 15-bit resolution at 488 Hz to 9-bit resolution at 31.25 kHz • Accuracy: ±10% over temperature range • No need for external oscillator • Supply voltage from 1.8 V to 5.5 V, independent from contactless interface • Independent push-pull outputs – Up to 4 mA drive capability per output – Adjustable output drive for low power and low noise application • Live update of PWM parameters controlled by contactless interface Contactless interface • Based on ISO/IEC 15693 and NFC Forum Type 5 Tag • Supports all ISO/IEC 15693 modulations, coding, sub-carrier modes and data rates • Single and multiple blocks read • Internal tuning capacitance: 28.5 pF Memory • 2-Kbit of EEPROM • Accessible in blocks of 4x bytes • 5 ms typical write time (one block) • Data retention: 40 years • Write cycles endurance: 100k write cycles at 85 °C Data protection • Up to four independent areas, including the PWM control area, with flexible protection mechanism based on 32/64-bit passwords • System configuration: write protection by 32-bit password • TruST25 digital signature mechanism for authentication Temperature range • From -40 °C to +85 °C (contactless interface) • From -40 °C to +105 °C (PWM interface) Package • SO8N and TSSOP8 • ECOPACK2 (RoHS compliant) DS12114 - Rev 7 - January 2023 For further information contact your local STMicroelectronics sales office. www.st.com ST25DV02K-W1 ST25DV02K-W2 Description 1 Description The ST25DV02K-W1/2 is an ISO 15693 and NFC Forum Type 5 tag, with one or two pulse width modulation (PWM) outputs and 2 Kbits of electrically erasable programmable memory (EEPROM). It offers two interfaces. The first delivers up to 2x independent PWM output signals and the second is an RF link activated by the received carrier electromagnetic wave. The PWM outputs are configured at boot time, and can be updated live through RF link. RF and PWM are independently powered and can work in stand-alone mode. The ST25DV02K-W1/2 contains 256 bytes (64 blocks) of memory for User data. This memory is accessible through the RF interface, following ISO/IEC 15693 or NFC Forum Type 5 Tag recommendations. The device is based on technology and design solutions for which there are pending patents. 1.1 Block diagram Figure 1. Block diagram ANALOG FRONT END AC0 RF INTERFACE 28.5pF tuning AC1 capacitance DIGITAL UNIT CONTROL ISO/IEC 15693 PROTOCOL AND CONTROL MEMORY CONTROL EEPROM User data memory PWM Control registers System registers VCC Pulse width Modulation PWM1 PWM2 VSS Note: PWM2 is available only on ST25DV02K-W2. DS12114 - Rev 7 page 2/75 ST25DV02K-W1 ST25DV02K-W2 Package connections 1.2 Package connections ST25DV02K-W1/2 is provided in two different packages: • SO8N • TSSOP8 Table 1. Signal names Signal name Function AC0 Antenna coils AC1 Antenna coils VCC PWM supply voltage PWM1 PWM output PWM2 (1) PWM output VSS Ground 1. Available only on ST25DV02K-W2. Direction I/O I/O Power Output Output - Figure 2. ST25DV02K-W1/2 8-pin package connections NC 1 AC0 2 AC1 3 NC 4 8 VCC 7 NC/PWM2 6 PWM1 5 VSS DS12114 - Rev 7 page 3/75 ST25DV02K-W1 ST25DV02K-W2 Signal description 2 Signal description 2.1 Pulse width modulation output (PWM1) This signal provides a pulse width modulation output. It is a push-pull output signal, driven between VSS and VCC. PWM1 output is in high impedance state, as long as it is disabled. 2.2 Pulse width modulation output (PWM2) This signal provides a pulse width modulation output. It is a push-pull output signal, driven between VSS and VCC. PWM2 is independent from PWM1. PWM2 output is available on ST25DV02K-W2 only, and it is in high impedance state, as long as it is disabled. 2.3 PWM power supply (VCC) This pin must be connected to an external DC supply voltage to have the PWM output(s) working. PWM power supply is independent from the RF NFC tag part: The RF NFC tag works whatever VCC power supply state is. On the other side, PWM outputs work as soon as VCC power is supplied, and whatever RF field state is. 2.4 PWM ground reference (VSS) VSS is the reference for the VCC and PWM pins. 2.5 Antenna coil (AC0, AC1) These inputs are used exclusively to connect the ST25DV02K-W1/2 device to an external coil. It is advised not to connect any other DC or AC path to AC0 or AC1. When correctly tuned, the coil is used to power and access the device using the ISO/IEC 15693 and ISO 18000-3 mode 1 protocols. DS12114 - Rev 7 page 4/75 3 Power management ST25DV02K-W1 ST25DV02K-W2 Power management 3.1 Wired interface Operating supply.


ST25DV02K-W1 ST25DV02K-W2 MLX90371


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