參數(shù)資料
型號: LTC1756
廠商: Linear Technology Corporation
英文描述: Smart Card Interface
中文描述: 智能卡接口
文件頁數(shù): 9/12頁
文件大?。?/td> 149K
代理商: LTC1756
9
LTC1756
Deactivation Sequence
For maximum flexibility the Smart Card can be deactivated
either manually or automatically. In manual mode the
deactivation is controlled by explicitly manipulating the
LTC1756 input and control pins (DATA, RIN and CIN
followed by PWR). In automatic mode the PWR pin is used
to perform the built-in deactivation sequence. Once PWR
is brought high the built-in deactivation sequence occurs
as follows:
APPLICATIO
S I
N
FOR
ATIO
U
Self-Start Mode
By connecting the CARD pin to the PWR pin the LTC1756
can be made to start up automatically when a Smart Card
is detected (Figure 2). In this mode, the READY pin
becomes an interrupt signal indicating to the microcon-
troller that a Smart Card is present and that V
CC
, the charge
pump voltage, is at its final value. The Smart Card remains
powered as long as it is detected by the PRES pin. When
the Smart Card is removed the LTC1756 will automatically
be deactivated by the fault detection circuitry.
W
U
Figure 2. Self-Start Mode
Figure 3. Deactivation Sequence
CARD
TO
MICROCONTROLLER
PWR
READY
1756 F02
V
CC
1755 F03
RST
CLK
I/O
RST = R
IN
DEACTIVATION DIRECTIVE
CLK = C
IN
I/O = DATA
In the event of a fault, the LTC1756 automatically
implements the built-in deactivation sequence.
相關PDF資料
PDF描述
LTC1772B Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23
LTC1772BES6 Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23
LTC1772CS6 Quadruple 2-Input Positive-NAND Gate 14-SOIC -40 to 85
LTC1772 Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23
LTC1773 Synchronous Step-Down Regulator Controller(同步步降穩(wěn)壓器)
相關代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1756EGN 功能描述:IC SMART CARD 16-SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C,SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1
LTC1756EGN#PBF 功能描述:IC SMART CARD INTERFACE 16SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C,SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1
LTC1756EGN#TR 功能描述:IC SMART CARD INTERFACE 16SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C,SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1
LTC1756EGN#TRPBF 功能描述:IC SMART CARD INTERFACE 16SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C,SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1
LTC1757A-1EMS8 功能描述:IC CTRLR RF POWER SINGLE 8MSOP RoHS:否 類別:RF/IF 和 RFID >> RF 電源控制器 IC 系列:- 標準包裝:3,000 系列:- RF 型:GSM 頻率:450MHz ~ 2GHz 特點:四頻帶 封裝/外殼:8-VFBGA 供應商設備封裝:8-MicroSMD(1.51x1.51) 包裝:帶卷 (TR) 其它名稱:LMV243BLX