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参数资料
| 型号： | DS8005-KIT# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | EVALUATION KIT FOR DS8005 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 接口，模拟前端（AFE） |
| 已用 IC / 零件： | DS8005 |
| 已供物品： | 板 |
| 相关产品： | DS8005-RRX+-ND - SMART CARD AFE DUAL 28SOIC |
| 其它名称： | 90-08005#KIT |
DS8005
Smart Card Interface
______________________________________________________________________________________
11
load current. Current to and from the card I/O lines is
limited internally to 15mA. The maximum frequency on
these lines is 1MHz.
Inactive Mode
The device powers up with the card interface in the
inactive mode. Minimal circuitry is active while waiting
for the host to initiate a smart card session.
All card contacts are inactive (approximately 200
Ω to
GND).
The I/OIN pin in the high-impedance state (11k
Ω
pullup resistor to VDD).
Voltage generators are stopped.
XTAL oscillator is running (if included in the device).
Voltage supervisor is active.
The internal oscillator is running at its low frequency.
Activation Sequence
After power-on and the reset delay, the host microcon-
troller can monitor card presence with signals OFF and
CMDVCC, as shown in Table 2.
If the card is in the reader (if PRES_ is active), the host
microcontroller can begin an activation sequence (start
a card session) by pulling CMDVCC low. The following
events form an activation sequence (Figure 3):
1) CMDVCC is pulled low.
2) The internal oscillator changes to high frequency (t0).
3) The voltage generator is started (between t0 and t1).
ATR
CMDVCC
RST_
RSTIN
CLK_
VCC_
I/O_
I/OIN
t0 t1
t2
t3
t4
t5 = tACT
Figure 3. Activation Sequence Using RSTIN and CMDVCC
Table 2. Card Presence Indication
SEL_AB
OFF
CMDVCC
STATUS
Low
High
Card A present.
Low
High
Card A not present.
High
Card B present.
High
Low
High
Card B not present.
SEL_AB
OFF2
CMDVCC
STATUS
Low
High
Card B present.
Low
High
Card B not present.
High
Card A present.
High
Low
High
Card A not present.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS8005-KIT# | 功能描述:界面开发工具 DS8005 Eval Kit 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 |
| DS8005-RJX+ | 功能描述:接口 - 专用 DUAL SMARTCARD AFE RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| DS8005-RRX+ | 功能描述:接口 - 专用 Dual Smart Card AFE RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| DS8007 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Multiprotocol Dual Smart Card Interface 8kV (min) ESD Protection on Card Interfaces |
| DS8007_11 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Multiprotocol Dual Smart Card Interface 8kV (min) ESD Protection on Card Interfaces |
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