UTDA8024中文资料IC CARD INTERFACE数据手册UTC规格书

特性 Features

Three specifically protected half-duplex bidirectional buffered I/O lines to card contacts C4, C7 and C8Automatic activation and deactivation sequences; initiated by software or by hardware in the event of a short-circuit, card take-off, overheating, VDD or VDDP drop-out26MHz integrated crystal oscillatorDC/DC converter for VCC generation separately powered from a 5 V ± 20% supply (VDDP and PGND)3V or 5V ± 5% regulated card supply voltage (VCC) with  appropriate decoupling has the following capabilities: - ICC<80mA at VDDP=4~6.5V - Handles current spikes of 40nAs up to 20MHz - Controls rise and fall times - Filtered overload detection at approximately 120mABuilt-in debounce on card presence contactsSupply supervisor for spike-killing during power-on and power-off and Power-on reset (threshold fixed internally or externally by a resistor bridge)Thermal and short-circuit protection on all card contactsClock generation for cards up to 20MHz (divided by 1, 2, 4 or 8 through CLKDIV1 and CLKDIV2 signals) with synchronous frequency changesNon-inverted control of RST via pin RSTINISO 7816, GSM11.11 and EMV (payment systems)  CompatibilityEnhanced ESD protection on card side (>6kV)