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73S8023C-IM/F 参数 Datasheet PDF下载

73S8023C-IM/F图片预览
型号: 73S8023C-IM/F
PDF下载: 下载PDF文件 查看货源
内容描述: 智能卡接口 [Smart Card Interface]
分类和应用: 模拟IC信号电路
文件页数/大小: 27 页 / 383 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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DS_8023C_019  
73S8023C Data Sheet  
1 Pin Description  
1.1 Card Interface  
Name  
I/O  
Pin  
9
Description  
Card I/O: Data signal to/from card. Includes a pull-up resistor to VCC.  
AUX1: Auxiliary data signal to/from card. Includes a pull-up resistor to VCC.  
AUX2: Auxiliary data signal to/from card. Includes a pull-up resistor to VCC.  
AUX1  
AUX2  
11  
10  
RST  
CLK  
14  
13  
Card reset: Provides reset (RST) signal to card.  
Card clock: Provides clock (CLK) signal to card. The rate of this clock is  
determined by crystal oscillator frequency and CLKDIV selections.  
PRES  
PRES  
VCC  
7
6
Card Presence switch: Active high indicates card is present. Includes a  
pull-down current source.  
Card Presence switch: Active low indicates card is present. Includes a pull-up  
current source.  
15  
12  
Card power supply: Logically controlled by sequencer, output of DC-DC  
converter. Requires an external filter capacitor to the card GND.  
GND  
Card ground.  
1.2 Miscellaneous Inputs and Outputs  
Name  
Pin  
Description  
XTALIN  
23  
Crystal oscillator input: can either be connected to crystal or driven as a  
source for the card clock.  
XTALOUT  
VDDF_ADJ  
NC  
24  
17  
4
Crystal oscillator output: connected to crystal. Left open if XTALIN is being  
used as external clock input.  
VDD fault threshold adjustment input: this pin can be used to adjust VDDF  
value (that controls deactivation of the card). Must be left open if unused.  
Non-connected pin. Must be left open.  
1.3 Power Supply and Ground  
Name  
Pin  
Description  
VDD  
3, 20  
System controller interface supply voltage: Supply voltage for internal power  
supply and DC-DC converter power supply source.  
GND  
GND  
LIN  
1
21  
2
DC-DC converter ground.  
Digital ground.  
External inductor. Connect external inductor from pin 2 to VDD. Keep the  
inductor close to pin 2.  
Rev. 1.5  
5