Kinetis® KW41Z-2.4 GHz Dual Mode: Bluetooth® Low Energy and 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm® Cortex®-M0+ Core
Design Files
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NTAG I²C Plus 2K: NFC Forum Type 2 Tag with I²C Interface
Please check the new online NFC Antenna Tool for tag and reader devices.
The NTAG I²C plus combines a passive NFC interface with a contact I²C interface. Designed to be an enabler for NFC in home-automation and consumer applications, this connected NFC tag is a fast, cost effective way to add tap-and-go connectivity to just about any electronic device.
These devices maintain full backward compatibility with first-generation NTAG I²C while adding advanced features for password protection, a full memory-access configuration from both interfaces, and an originality signature for protection against cloning.
Commitment to Longevity
NT3H2211 and NT3H2111 are ready to support your development today, tomorrow and beyond through its longevity program. The Product Longevity program ensures a stable supply of products for your embedded designs
Product Details
Features
Key features
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Pass-through mode
- Up to 40 kbit/s using 64 byte SRAM buffer
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Energy harvesting
- Up to 15 mW
- Wake up host with field detect pin
- Password protection
- 32-bit password to restrict access to EEPROM and SRAM
- Originality signature
- 32-byte elliptic curve based originality signature to protect cloning
NFC interface
- Interoperability
- Fully ISO/IEC 14443 A compliant
- Fully NFC Forum Type 2 Tag compliant
- One to one backward compatible to NTAG I²C
- Uniqueness
- 7-byte Unique Identifier (according to ISO/IEC 14443-3)
- GET_VERSION command for easy identification of chip type and supported features
- 32-byte originality signature
- ISO/IEC 14443 and NFC Forum Type 2 Tag features
- Operating distance up to 100 mm
- True anti-collision
- 4-byte write operation in < 4.8 ms to EEPROM and < 0.8 ms to SRAM
- 64-byte write operation (FAST_WRITE) in < 6.1ms to SRAM
I2C interface
- Features
- I²C target interface supports up to 400 kHz
- 16-byte write operation in < 4.5 ms to EEPROM and < 0.4 ms to SRAM
- This device may be used as standard I²C EEPROM or I²C SRAM
Security
- NFC Forum Type 2 Tag features
- 7-byte Unique Identifier
- One time programmable Capability Container
- Read-only locking
- Special features
- Elliptic curve based originality signature
- 32-bit password protection
- Protected data can be safeguarded against a limited number of negative password authentication attempts
- Access restriction from an I²C perspective
- Pass-through and mirror mode operations may be password protected
Memory
- Built-in memory
- 1912 or 888-bytes freely available user memory area
- 64-bytes SRAM
- Specification
- 20 years of data retention
- 500.000 write cycles
Connection Modes
Direct Power Source
Alternatively, the power harvested by the NTAG I²C tag chip can also be applied directly as a source of power for devices requiring less energy, such as low power microcontrollers, sensors, and indicators.
Energy Harvesting
The NTAG I²C tag chip’s energy harvesting capability and Field Detect (FD) functions work together to help support power management. Upon application of the RF field to the antenna, the FD output asserts low, and the energy harvested by the NTAG I²C tag chip from the RF field is output (VOUT) to a Power Management Unit (PMU) (1). The PMU distributes received power to both the NTAG I²C tag chip and the microcontroller (2), which allows the I²C bus to become active (3), enabling communication.
Pass-through Mode using SRAM (Device-Powered Mode)
For data transfer after communication has been initiated, the on-chip, 64-byte SRAM preserves EEPROM access limits by supporting a data pass-through option. In this case, data flows from the NFC interface through an SRAM buffer to the I²C serial bus interface or vice versa. The NTAG I²C tag chip operates as a modem when in this mode.
Data Transfer Mode using EEPROM (Passive/Static Mode)
When manufacturers embed the NTAG I²C tag chip into products, users can download information via the RF interface to those products even when they are not receiving power, because the NTAG I²C tag chip acts as a connection between the user’s NFC-enabled mobile device and the sealed and packaged product.
With a power to the device off, the contactless NFC interface can still operate, receiving data that the NTAG I²C tag chip stores in nonvolatile EEPROM memory. Later, when the device has power, the microprocessor can access the previously written data via the I²C serial bus interface. Similarly, the microprocessor can write data to the EEPROM while powered for later access via the NFC interface whether or not the device has power.
Direct Power Source
Energy Harvesting
Pass-through Mode using SRAM (Device-Powered Mode)
Data Transfer Mode using EEPROM (Passive/Static Mode)
Related products
ZigBee and IEEE802.15.4 Wireless Microcontroller with 512 KB Flash, 32 KB RAM
Buy/Parametrics
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Documentation
Quick reference to our documentation types.
1-5 of 13 documents
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Application Note
NTAG Antenna Design Guide
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Application Note
NTAG I²C plus memory configuration options
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Application Note
NTAG® Originality Signature Validation
Design Resources
Hardware
Quick reference to our
board types.
2 hardware offerings
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Adapters, Cables, SocketsNTAG I2C plus kit for Arduino® pinout
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Evaluation and Development BoardsNTAG I2C plus Explorer Kit
Software
Quick reference to our software types.
2 software files
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Configuration Tools
NFC Antenna Design Hub
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HMI Design Software
Online NFC Antenna Design Tool
Note: For better experience, software downloads are recommended on desktop.
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
2 engineering services
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Independent Design House (IDH)
NFC Charging Wireless System Design
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Independent Design House (IDH)
NFC demonstrators
To find additional partner offerings that support this product, visit our Partner Marketplace.