ST25DV16K NFC/RFID EEPROM
Dual-interface NFC/RFID EEPROM. Read and write NDEF records via I2C or contactless NFC. 16Kbit user memory with energy harvesting.
Say it to PAL
“Open a web page on my phone when I tap it.”
The code PAL writes
await p.write('qwiic-st25dv', 'write_ndef', { type: 'url', payload: 'https://palpable.technology' });
p.log('NFC tag programmed with URL');“Tell me when a phone is held near it.”
The code PAL writes
p.onSensorChange('qwiic-st25dv', 'energy_harvesting', (val) => {
if (val === 1) p.log('Phone detected near NFC tag');
});
await p.waitUntilStopped();When to pick it
Use when you want phone-tap interaction, NFC-based configuration, contactless data exchange, or smart labeling.
Good to know
- NFC range is very short (~1-2cm). Phone must be held directly against the antenna.
About it
The ST25DV16K is a dual-interface memory IC that can be accessed via I2C from your microcontroller and via NFC (13.56 MHz) from smartphones and other NFC devices. It stores up to 16Kbit of user data in EEPROM with NDEF record support. Features energy harvesting from the RF field, a fast transfer mode mailbox, and configurable security. Ideal for smart labels, configuration via phone tap, and contactless data exchange.
Where to buy
Facts
Tested
It is in our catalog, but nobody has checked it on a real board. It may not work yet. Its driver is written, but it has not been tested on hardware yet.
I2C address
The catalog lists I2C addresses 0x53 and 0x57 for the ST25DV16K NFC/RFID EEPROM and does not record which one it uses. The address is fixed.
Current
30 µA
The catalog lists a typical draw of 30 µA for the ST25DV NFC, copied from the maker’s description and not measured by Palpable.
Board size
25.4 × 31.75 mm
The ST25DV NFC board measures 25.4 × 31.75 mm and stands 4.6 mm tall with its parts. It has 4 mounting holes. These dimensions are from the maker’s mechanical drawing.
Chip
ST25DV16K
Its radio is the STMicroelectronics ST25DV16K.
Free to reuse
Every fact here is open data under CC BY 4.0. Copy it into your own docs or code, and credit Palpable. Download it
This record was last changed on October 6, 2026.