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參數(shù)資料
| 型號： | 73S8024RN-32IM/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC32 |
| 封裝： | LEAD FREE, QFN-32 |
| 文件頁數(shù)： | 27/27頁 |
| 文件大?。?/td> | 319K |
| 代理商： | 73S8024RN-32IM/F |
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DS_8024RN_020
73S8024RN Data Sheet
Rev. 1.9
9
4 Card Power Supply
The card power supply is internally provided by the LDO regulator, and controlled by the digital
ISO-7816-3 sequencer. Card voltage selection is carried out by the digital input 5V/
#V.
Depending on the applications, the requirements in terms of both VCC minimum voltage and transient
currents that the interface must be able to provide to the card are different. An external capacitor must be
connected between the VCC pin and to the card ground in order to guarantee stability of the LDO
regulator, and to handle the transient requirements. The type and value of this capacitor can be
optimized to meet the desired specification. Table 1 shows the recommended capacitors for each VPC
power supply configuration and applicable specification.
Choice of the VCC Capacitor:
Table 1: Choice of VCC Pin Capacitor
Specification Requirements
System Requirements
Specification
Min VCC Voltage
Allowed During
Transient Current
Max
Transient
Current
Charge
Min VPC
Power
Supply
Required
Capacitor
Type
Capacitor Value
EMV 4.0
4.6V
30nA.s
4.75V
X5R/X7R
w/
ESR <
100m
3.3
F
ISO-7816-3
4.5V
20nA.s
4.75V
1
F
NDS
4.6V
40nA.s
4.85V
1
F
Note: Capacitor value for NDS implementation is also defined by the deactivation time requirement.
5 Over-Temperature Monitor
A built-in detector monitors die temperature. Upon an over-temperature condition, a card deactivation
sequence is initiated, and an error or fault condition is reported to the system controller.
6 On-Chip Oscillator and Card Clock
The 73S8024RN device has an on-chip oscillator that can generate the smart card clock using an
external crystal (connected between the pins XTALIN and XTALOUT) to set the oscillator frequency.
When the clock signal is available from another source, it can be connected to the pin XTALIN, and the
pin XTALOUT should be left unconnected.
The card clock frequency may be chosen between four different division rates, defined by digital inputs
CLKDIV 1 and CLKDIV 2, as per Table 2.
Table 2: Card Clock Frequency
CLKDIV1
CLKDIV2
CLK
0
XTALIN
0
1
XTALIN
1
0
XTALIN
1
XTALIN
Card power down mode (card clock STOP) is supported and is controllable through the dedicated digital
inputs CLKSTOP and CLKLEV (not supported in the 20QFN package).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 73S8024RN-32IMR/F | 功能描述:IC SMART CARD INTERFACE 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| 73S8024RN-DB | 功能描述:界面開發(fā)工具 73S8024RN Demo Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| 73S8024RN-IL | 制造商:TERIDIAN 功能描述: 制造商:TDK 功能描述:SPECIALTY ANALOG CIRCUIT, 28 Pin Plastic SMT |
| 73S8024RN-IL/F | 功能描述:輸入/輸出控制器接口集成電路 Smart Card Interface ISO7816-3 & EVM4.0 RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| 73S8024RN-IL/F1 | 功能描述:輸入/輸出控制器接口集成電路 Smart Card Interface ISO7816-3 & EVM4.0 RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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