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参数资料
| 型号： | 73S8009CN-32IM/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC32 |
| 封装： | 5 X 5 MM, ROHS COMPLIANT, QFN-32 |
| 文件页数： | 10/30页 |
| 文件大小： | 349K |
| 代理商： | 73S8009CN-32IM/F |
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73S8009CN Data Sheet
DS_8009CN_026
18
Rev. 1.4
3.4
System Controller Interface
Five separate digital inputs and two outputs allow direct control of the card interface from the host:
Pin CS: Chip select control.
Pin
CMDVCC# and/or CMDVCC%: When low, starts an activation sequence.
Pin RSTIN: controls the card RST signal.
Pin SC/
USB: Routes AUXx signals to AUXxUC or USB Dx pins and provides proper tri-stating
functionality.
Pin RDY: Indicates when smart card power supply is stable and ready.
Pin
OFF: Indicator of card presence and any card fault conditions.
Interrupt output to the host: When the card is not activated, the
OFF pin informs the host about the card
presence only (Low = No card in the reader, high = card inserted). When
CMDVCC (#/% signals) is/are
set low (card activation sequence requested from the host), low level on
OFF means a fault has been
detected (e.g. card removal during card session, or voltage fault, or thermal / over-current fault) that
automatically initiates a deactivation sequence. The smart card pass through signals are enabled when
the RDY conditions are met.
3.5
Card Power Supply and Voltage Supervision
The 73S8009CN smart card interface IC incorporates an LDO voltage regulator for the card power
supply, VCC (VP to VCC conversion uses an internal LDO). The voltage output is controlled by the digital
input sequence of
CMDVCC# and CMDVCC%. This regulator is able to provide either 1.8V, 3V or 5V
card voltage sourced from the VP power supply. Internal digital circuitry is also powered by the VP power
supply (except for the ON/OFF circuitry which is powered from VPC). A voltage supervisor checks the
value of the voltage VCC. A card deactivation sequence is forced upon fault detected by voltage
supervisor, overcurrent condition, or card removal event. The voltage regulator can provide a card
current of 65mA in compliance with EMV 4.1 for 3-V and 5-V cards. The signals
CMDVCC# and
CMDVCC% control the turn-on, output voltage value, and turn-off of V
CC. When either signal is asserted
low, VCC will ramp to the selected value or if both signals are asserted low (within 400ns of each other),
VCC will ramp to 1.8V. These signals are edge triggered. If CMDVCC% is asserted low (to command VCC
to be 5V) and at a much later time (greater than 2
s, typically), CMDVCC# is asserted low, it will be
ignored (and vice versa.)
At the assertion (low) of either or both
CMDVCC (#/% signals), V
CC will rise to the requested value. When
VCC rises to an acceptable value, and stays above that value for approximately 20s, RDY will be set
high. Approximately 510
s after the fall of CMDVCC (#/%), the circuit will check the see if V
CC is at or
above the required minimum value (indicated by RDY=1) and if not, will begin an emergency deactivation
sequence. During the 510
s time, card removal, or de-assertion of CMDVCC (#/%) shall also initiate an
emergency deactivation sequence. The circuit provides over-current protection and limits Icc to 150mA,
maximum for self-protection. When an over-current condition is sensed, the circuit will invoke a de-
activation sequence.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 73S8009CN-32IMR/F | 功能描述:输入/输出控制器接口集成电路 ISO7816 & USB Unvrsl Smart Card Interface RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| 73S8009CN-32IMR/F1 | 功能描述:输入/输出控制器接口集成电路 RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| 73S8009CN-DB | 功能描述:界面开发工具 73S8009CN Demo Brd RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| 73S8009R | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Low Cost Versatile Smart Card Interface |
| 73S8009R-DB | 功能描述:界面开发工具 73S8009R Demo Brd RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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