ST25DV02K-W1R8T3 STMicroelectronics

ST25DV02K-W1 ST25DV02K-W2 Datasheet Dynamic NFC/RFID tag IC with up to two PWM outputs and 2-Kbit EEPROM Features Pulse width modulation outputs Two independent outputs: 1x PWM output on ST25DV02K-W1, 2x PWM outputs SO8 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 TSSOP8 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 Product status link Memory ST25DV02K-W1 ST25DV02K-W2 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-bits passwords System configuration: write protection by 32-bit password TruST25 Digital signature mechanism for authentication Temperature range From -40C to +85C (Contactless interface) From -40 C to +105 C (PWM interface) Package SO8N and TSSOP8 ECOPACK2 (RoHS compliant) DS12114 - Rev 6 - August 2019 www.st.com For further information contact your local STMicroelectronics sales office.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 EEPROM ANALOG FRONT END AC0 VCC RF INTERFACE 28.5pF tuning AC1 capacitance User data memory PWM1 DIGITAL UNIT Pulse width CONTROL Modulation ISO/IEC 15693 PWM Control PWM2 PROTOCOL registers AND CONTROL MEMORY System registers VSS CONTROL Note: PWM2 is available only on ST25DV02K-W2. DS12114 - Rev 6 page 2/74