9kbyte FRAM and SPI in RFID chip
Fujitsu has squeezed 9kbyte of FRAM into an RFID chip, claiming it to be the largest yet, and included a serial interface for wireless parameter change in microcontroller systems.
“The MB89R112 series includes 9kbyte of FRAM, the greatest density available in an RFID chip operating in the HF band as defined in ISO/IEC15693,” said Fujitsu. “Of this, 8kbyte is provided as user memory, enabling access by read/write operations to the entire 8kbyte region as defined in ISO/IEC15693.”
Part of its FerVID family of tag chips, data retention is claimed to be 10 years (operating at -40 to 85°C), and a trillion (1012) re-writes are possible.
“Ferroelectric memory is used for fast write speeds, high-frequency re-writability, radiation tolerance and low-power operation,” said the firm. “Operation is six times faster than speeds achieved by E2PROM products.”
As well as traditional factory automation tagging, the chips are said to be capable of withstanding gamma radiation or electron beams for the medical and pharmaceutical sectors.
Writing 8kbyte of data takes approximately four seconds.
For microcontroller-connected embedded applications, there are SPI serial interface versions.
“The market is demanding RFID connectivity to sensors and microcontrollers so as to facilitate the wireless modification of product operating parameters or the logging of environmental factors during distribution,” said Fujitsu. “These features would benefit production control in automotive and electronics manufacturing, as well as maintenance applications in aviation, road-building, construction and civil engineering.”
This series will be offered in two variants, with 24 and 96pF input capacitance.
Samples are available now.
Since 2004, Fujitsu developed FRAM FerVID products in two frequency bands: HF band (13.56MHz) and UHF band (860-960MHz).