Electronics Weekly Electronics Design & Components Tech News
Dubbed PN7642, it was announced in Nuremberg at Embedded World this week.
“NFC technology has become foundational to secure authentication, whether it’s verifying that the person standing at the front door has been granted access by the homeowner, or confirming that the consumable that’s been inserted into a medical device is approved for use with that device,” according to the company.
The 2W output NFC reader is designed to operate with an external loop antenna. Its counterpart at the other end of the link can be an NFC-equipped phone, card or tag.
Maximum operating transmitter current is 350mA, and it has dynamic power control (DPC 2.0) as well as AWC (automatic waveshape control).
Card detection is possible at 22µA.
In the security block, there is storage for 16x 128bit symmetric keys (or 8x 256bit) and 7x 256bit (or 384bit) asymmetric keys. Around 20 encryption algorithms are supported.
Around the microcontroller, serial interfaces include controller-ends for ISO7816 UART, 15Mbit/s SPI and 3.4Mbit/s I2C (with SMBUS), then target-ends for SPI and 3.4Mbit/s I2C and I3C – plus USB device
Up to 21 GPIOs are possible, and there are timers, some with PWM, and a 10bit ADC.
Overall, operation is across 2.4 to 5.5V and -40 to +105°C, and an integrated dc-dc allows single 3.3V operation with maximum transmit power.
Packaging is 4.5 x 4.5 x 0.8mm VFBGA64.
