audio payment

The mobile phone audio card reader is a payment tool that includes an ultra-low power microcontroller, payment card slot, security access module, tamper detection pin, and audio interface. This solution uses the low-power Nano100 series as the main control. The microcontroller has passed the Europay/Master Card/Visa (EMV) international organization standard EMV 2000 certification and China PBOC3.0 Level-1 certification.

The Nano100 series provides high-performance, low-cost, ultra-low power consumption 32-bit Arm® Cortex®-M0 core, running speed up to 42 MHz, built-in 32-bit hardware multiplier, low operating voltage 1.8V ~ 3.6V, ultra-low power operation mode (< 200 uA/MHz), power-down mode (real-time clock, memory data retention < 2.5 uA), deep power-down mode (memory data retention < 1 uA), flash memory up to 128 KB and memory memory up to 16 KB. Highly integrated RTC, 12-bit ADC, conversion rate up to 2 Msps, built-in 12 MHz RC oscillator and USB 2.0 to reduce system BOM cost. Rich peripheral interfaces I²Cx2, SPIx3, UARTx5, ISO7816-3x3 smart card interface, anti-tamper detection pin, anti-theft copy lock code bit function, 96-bit UID chip unique code, 128-bit UCID customer unique code, strong anti-interference ability ( ESD 8KV/EFT 4kV).