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Smart Card Reader MCU
 
Part No. Operating Voltage Operating Speed ROM RAM GPIO EMV ISO 7816-3 LCD Controller LCD
Driver
SPI USB WDT/
RTC/
LVR/
LVD
Internal Regulator ADC Cap
Sensor
ST25F32U 2.7V~5.5V 16MHz 32K
Flash
3KB 48 Class A, B, C LCM Display no Yes full speed
crystal-less
Yes 5V→1.8V
5V→ 5/3/1.8V
no no
ST27F01U 2.4V~5.5V 48MHz 128KB
Flash
12KB 48 Class A, B, C LCM Display 32x4 *2 full speed
crystal-less
Yes 5V→3V→1.5V
5V→ 5/3/1.8V
12-bit 24-Key