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參數(shù)資料
| 型號： | DS8005-RJX+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | SMART CARD AFE DUAL 28TSSOP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 通道數(shù)： | 2 |
| 功率（瓦特）： | 700mW |
| 電壓 - 電源，數(shù)字： | 1.8V, 3V, 5V |
| 封裝/外殼： | * |
| 供應(yīng)商設(shè)備封裝： | * |
| 包裝： | * |
DS8005
Smart Card Interface
______________________________________________________________________________________
11
load current. Current to and from the card I/O lines is
limited internally to 15mA. The maximum frequency on
these lines is 1MHz.
Inactive Mode
The device powers up with the card interface in the
inactive mode. Minimal circuitry is active while waiting
for the host to initiate a smart card session.
All card contacts are inactive (approximately 200
Ω to
GND).
The I/OIN pin in the high-impedance state (11k
Ω
pullup resistor to VDD).
Voltage generators are stopped.
XTAL oscillator is running (if included in the device).
Voltage supervisor is active.
The internal oscillator is running at its low frequency.
Activation Sequence
After power-on and the reset delay, the host microcon-
troller can monitor card presence with signals OFF and
CMDVCC, as shown in Table 2.
If the card is in the reader (if PRES_ is active), the host
microcontroller can begin an activation sequence (start
a card session) by pulling CMDVCC low. The following
events form an activation sequence (Figure 3):
1) CMDVCC is pulled low.
2) The internal oscillator changes to high frequency (t0).
3) The voltage generator is started (between t0 and t1).
ATR
CMDVCC
RST_
RSTIN
CLK_
VCC_
I/O_
I/OIN
t0 t1
t2
t3
t4
t5 = tACT
Figure 3. Activation Sequence Using RSTIN and CMDVCC
Table 2. Card Presence Indication
SEL_AB
OFF
CMDVCC
STATUS
Low
High
Card A present.
Low
High
Card A not present.
High
Card B present.
High
Low
High
Card B not present.
SEL_AB
OFF2
CMDVCC
STATUS
Low
High
Card B present.
Low
High
Card B not present.
High
Card A present.
High
Low
High
Card A not present.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS8005-RJX+ | 功能描述:接口 - 專用 DUAL SMARTCARD AFE RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS8005-RRX+ | 功能描述:接口 - 專用 Dual Smart Card AFE RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS8007 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multiprotocol Dual Smart Card Interface 8kV (min) ESD Protection on Card Interfaces |
| DS8007_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multiprotocol Dual Smart Card Interface 8kV (min) ESD Protection on Card Interfaces |
| DS8007A | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Multiprotocol Dual Smart Card Interface |
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