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February 2018 DB3276 Rev 2 1/3
ST25DV02K-W1
ST25DV02K-W2
Dynamic NFC/RFID tag IC with 2-Kbit EEPROM
with up to 2x pulse width modulation outputs
Data brief
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:
– 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-kbits 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 ºC
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)
Description
The ST25DV02K-W1/W2 device is an NFC/RFID
tag IC with PWM outputs.
It embeds an EEPROM memory of 2 Kbits, which
can be divided for use-case flexibility.
The PWM output can be programmed
independently and securely, allowing a large field
of application. The IC provides live update of
PWM parameters by contactless interface,
extending the user experience.
The device can be operated from a 13.56 MHz
RFID reader or any NFC mobile phone.
The contactless interface is based on
ISO/IEC15693 and NFC Forum type 5 tag
standards.
TSSOP8 (3 x 6.4 mm)
SO8N (4.9 x 6 mm)
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