參數(shù)資料
型號: TDA8020
廠商: NXP Semiconductors N.V.
英文描述: Dual smart card interface
中文描述: 雙界面智能卡
文件頁數(shù): 11/24頁
文件大?。?/td> 114K
代理商: TDA8020
2001 Aug 15
11
Philips Semiconductors
Product specification
Dual smart card interface
TDA8020HL
Deactivation sequence
When the session is completed, the microcontroller resets
bit START/STOPtologic 0(t10).Thecircuitthenexecutes
an automatic deactivation sequence (see Fig.5):
Card reset (RST falls LOW) (t11)
CLK is stopped (t12)
I/O falls to 0 V (t13)
V
CC
falls to 0 V with typical 0.14 V/
μ
s slew rate (t14)
The DC/DC converter is stopped (if both cards are
inactive) and CLK, RST, V
CC
and I/O become low
impedance to CGND (t15).
t11 = t10 + T/64; t12 = t11 + T/2; t13 = t11 + T;
t14 = t11 + 3T/2; t15 = t11 + 7T/2.
The deactivation time t
de
is the time that V
CC
needs to drop
below 0.4 V from START/STOP to logic 0 (t10).
handbook, full pagewidth
tde
t10 t11
t12
t13
t14
t15
VUP
VCC
I/O
CLK
RST
START/STOP
FCE836
Fig.5 Deactivation sequence.
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相關代理商/技術參數(shù)
參數(shù)描述
TDA8020HL 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual smart card interface
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TDA8020HL/C2 制造商:NXP Semiconductors 功能描述:Cut Tape
TDA8020HL/C2,118 功能描述:輸入/輸出控制器接口集成電路 SMART CARD INTERFACE DUAL RoHS:否 制造商:Silicon Labs 產品: 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray
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