NXP Semiconductors'UCODE I2C
chip has an integrated I2C interface and a 3,328-bit user memory. The UCODE I2C
IC brings the power of Gen2 UHF to embedded systems, enabling bidirectional
communication between a wireless reader and a microprocessor via an I2C bus.
Using UCODE I2C, electronic devices can be configured and customized remotely,
enabling wireless data exchange and product provisioning even while the device
is powered down.
The UCODE I2C IC has 3,328 bits of EEPROM
memory, which can be used to upload updates to the embedded microprocessor upon
power up. The UHF interface includes two independent front-ends, each of which
can be enabled or disabled independently, as well as an RF or I2C interface
which can also be disabled independently.
The UCODE I2C functionality can be used in
different ways. As an anti-theft measure, electronic devices moving through
supply chain can remain disabled until they have been provisioned remotely
through the I2C bus, and each device can be tracked through a unique tag ID
(TID). The UCODE I2C chip enables retailers to pre-configure and customize it
without opening the box and pre-loading customer account information. UCODE I2C
can remotely deliver minor upgrades or enable optional features. In the event
of any problems, UCODE I2C makes it possible to identify the serial number as
well as the error logs internal to the device without opening it.
Other target applications include RFID data
loggers and sensors for products such as perishable foods and pharmaceuticals.
By passing sensor information through the I2C bus, the UCODE I2C IC can track,
monitor and record information such as temperature, humidity, pressure and
shock as the products move through the supply chain.
Features of the NXP UCODE I2C IC include:
interface for quick data transfer
user memory with 20-year data retention and 50,000 cycles of write endurance
UHF front-end architecture, enabling antennas to support different read-range
to 160-bit EPC
TID, including 48-bit serial number
to use SDA pin of the I2C port as a digital switch
RF ports and I2C interface, depending on privacy needs
to I2C bridge mode for data exchange (handshake)
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