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参数资料
| 型号： | 73S8014R-ILR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封装： | ROHS COMPLIANT, SOP-20 |
| 文件页数： | 10/29页 |
| 文件大小： | 375K |
| 代理商： | 73S8014R-ILR/F |
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73S8014R Data Sheet
DS_8014R_012
18
Rev. 1.0
3.6
Activation Sequence
The 73S8014R smart card interface ICs have an internal 10ms delay on the application of VDD where VDD >
VDDF. No activation is allowed during this 10ms period. The CMDVCC (edge triggered) signal must then be set
low to activate the card. In order to initiate activation, the card must be present; there can be no VDD fault.
The following steps show the activation sequence and the timing of the card control signals when the system
controller sets
CMDVCC low while the RSTIN is low:
-
CMDVCC is set low at t0.
-
VCC will rise to the selected level and then the internal VCC control circuit checks the presence of VCC at
the end of t1. In normal operation, the voltage VCC to the card becomes valid before t1. If VCC is not
valid at t1, the OFF goes low to report a fault to the system controller, and VCC to the card is shut off.
-
Turn I/O to reception mode at t2.
-
CLK is applied to the card at t3.
-
RST is a copy of RSTIN after t3.
CMDVCC
VCC
I/O
CLK
RSTIN
t
1
t
2
t
3
RST
t
0
t1 = 0.510 ms (timing by 1.5MHz internal Oscillator)
t2 = 1.5μs, I/O goes to reception state
t3 = >0.5μs, CLK starts, RST to become the copy of RSTIN
Figure 4: Activation Sequence – RSTIN Low When
CMDVCC Goes Low
The following steps show the activation sequence and the timing of the card control signals when the system
controller pulls the
CMDVCC low while the RSTIN is high:
-
CMDVCC is set low at t0.
-
VCC will rise to the selected level and then the internal VCC control circuit checks the presence of VCC at
the end of t1. In normal operation, the voltage VCC to the card becomes valid before t1. If VCC is not
valid at t1, the OFF goes low to report a fault to the system controller, and VCC to the card is shut off.
-
At the fall of RSTIN at t2, CLK is applied to the card
-
RST is a copy of RSTIN after t2.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 73S8014RN | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Smart Card Interface |
| 73S8014RN-DB | 功能描述:界面开发工具 73S8014RRN/RT 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 |
| 73S8014RN-IL/F | 功能描述:输入/输出控制器接口集成电路 Smart Card Interface Comp w/8024 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 |
| 73S8014RN-IL/F1 | 功能描述:输入/输出控制器接口集成电路 Smart Card Interface Comp w/8024 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 |
| 73S8014RN-IL/F2 | 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 |
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