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NXP TDA8034HN智能卡接口解决方案

关键词:其它 IC卡 智能卡.

时间:2011-02-22 13:30:44       作者:NXP        来源:TDA8034HN

nxp公司的TDA8034HN是用于异步和同步智能卡的高性价比模拟接口器件,适用于5 V, 3 V 或1.8 V智能卡电源,在深度关断模式有非常低的功耗,外接时钟输入可高达26MHz,主要应用在付费TV,电子支付,身份证以及银行卡阅读器.本文介绍了TDA8034HN主要特性和优势,方框图和应用电路.

TDA8034HN: Smart card interface

The TDA8034HN is a cost-effective analog interface for asynchronous and synchronous smart cards operating at 5 V, 3 V or 1.8 V. Using few external components, the TDA8034HN provides all supply, protection and control functions between a smart card and the microcontroller.

TDA8034HN主要特性和优势:

􀂄 Integrated circuit smart card interface in an HVQFN24 package

􀂄 5 V, 3 V or 1.8 V smart card supply

􀂄 Very low power consumption in Deep Shutdown mode

􀂄 Three protected half-duplex bidirectional buffered I/O lines (C4, C7 and C8)

􀂄 VCC regulation:

􀂋 5 V, 3 V or 1.8 V ± 5 % using two low ESR multilayer ceramic capacitors: one of 220 nF and one of 470 nF

􀂋 current spikes of 40 nA/s (VCC = 5 V and 3 V) or 15 nA/s (VCC =1.8 V) up to 20 MHz, with controlled rise and fall times and filtered overload detection of approximately 120 mA

􀂄 Thermal and short-circuit protection for all card contacts

􀂄 Automatic activation and deactivation sequences triggered by a short-circuit, card take-off, overheating, falling VDD, VDD(INTF) or VDDP

􀂄 Enhanced card-side ElectroStatic Discharge (ESD) protection of > 6 kV

􀂄 External clock input up to 26 MHz connected to pin XTAL1

􀂄 Card clock generation up to 20 MHz using pins CLKDIV1 and CLKDIV2 with synchronous frequency changes of fxtal, 1∨2 fxtal, 1∨4 fxtal or 1∨8 fxtal

􀂄 Non-inverted control of pin RST using pin RSTIN

􀂄 Compatible with ISO 7816, NDS and EMV 4.2 payment systems

􀂄 Supply supervisor for killing spikes during power on and off:

􀂋 using a fixed threshold

􀂋 using an external resistor bridge with threshold adjustment

􀂄 Built-in debouncing on card presence contacts (typically 8 ms)

􀂄 Multiplexed status signal using pin OFFN

TDA8034HN应用:

􀂄 Pay TV

􀂄 Electronic payment

􀂄 Identification

􀂄 Bank card readers

图1.TDA8034HN方框图

图2.TDA8034HN应用电路图
详情请见:
http://www.nxp.com/documents/data_sheet/TDA8034HN.pdf

 

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