STMicroelectronics

Dynamic NFC/RFID tag IC with 2-Kbit EEPROM and 1x PWM (Pulse Width Modulation) output

ST25DV02K-W1
意法半導體的ST25DV-PWM NFC動態標籤晶片首次採用一個創新的通過非接觸式通信技術在生產線上或安裝現場預設設備參數的方式,並簡化在使用過程中的參數設置或微調操作。該動態標籤IC瞄準所有的基於PWM(脈衝寬度調製)控制器的應用,例如,照明產品、電動設備、風扇和恒溫器,使用ISO15693 RFID讀取器或有NFC功能的智慧手機或其它移動設備更新標籤上的資料。
Dynamic NFC/RFID tag IC with 2-Kbit EEPROM and 1x PWM (Pulse Width Modulation) output
新動態標籤IC首次整合意法半導體經過市場檢驗的NFC技術與PWM邏輯,根據(NFC Type 5和ISO / IEC 15693相容)RFID介面收到並保存在片上EEPROM中的設置資料,使用嵌入式脈衝寬度/週期機制生成控制信號。只要標籤上的PWM模組一上電,PWM輸出就會立即開始工作,並且獨立於RF電路運行。為了更方便省事,可以在設備運行狀態下通過NFC介面動態修改PWM控制器配置。

新推出的兩款產品ST25DV02K-W1和ST25DV02K-W2分別提供4mA推挽式PWM單輸出和雙輸出,最多可以獨立調節兩顆LED燈的亮度或兩個電機的速度。標籤內置高品質、高精度的PWM發生器,脈衝寬度解析度為62.5ns,在488Hz最低頻率時相當於15位元解析度,在31.25kHz最高頻率時相當於9位元解析度。工作溫度範圍-40°C至105°C,除電源去耦電容外,標籤不需要任何外部振盪器或其它元件。

通過非接觸式介面可以在製造、銷售、安裝或維護環節隨時更新PWM參數。像ST25系列的其它產品一樣,ST25DV-PWM動態NFC標籤提供多種資產和資料保護功能,包括用於身份驗證的TruST25™數位簽章機制。此外,獨立的32/64位元密碼保護區可防止非法訪問標籤EEPROM。

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.

Key Features
  • Pulse width modulation outputs
    • Up to 2x independent outputs
      • 1x PWM output with ST25DV02K-W1
      • 2x PWM outputs with ST25DV02K-W2
    • From 488 Hz to 31250 Hz
    • 62.5 ns pulse width resolution:
    • 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
    • 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-kbits of EEPROM
    • Accessible in blocks of 4x bytes
    • 5 ms typical write time (one block)
    • Data retention: 40 years
    • Write cycles endurance:
  • Data protection
    • Up to 4 independent areas, including the PWM control area, with flexible protection mechanism based on 32/64-bits 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
    • 8-pin packages
    • ECOPACK2® (RoHS compliant)
© 2018 EDOM Technology. All Rights Reserved.