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參數(shù)資料
| 型號(hào)： | NCN6000 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Compact Smart Card Interface IC(智能卡接口集成電路) |
| 中文描述： | 緊湊型智能卡接口IC（智能卡接口集成電路） |
| 文件頁數(shù)： | 21/36頁 |
| 文件大小： | 358K |
| 代理商： | NCN6000 |
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NCN6000
http://onsemi.com
21
Power Management
The purpose of the power management is to activate the
circuit functions needed to run a given mode of operation,
yielding a minimum current consumption on the Vbat
supply. In the Standby mode (PWR_ON = L), the power
management provides energy to the card detection circuit
only. All the card interface pins are forced to ground
potential.
In the event of a power up request coming from the
external MPU (PWR_ON = H, CS = L), the power manager
starts the DCDC converter.
When the CRD_VCC voltage reaches the programmed
value (3.0 V or 5.0 V), the circuit activates the card signals
according to the following sequence:
CRD_VCC
CRD_IO
CRD_CLK
CRD_RST
The logic level of the data lines are asserted High or Low,
depending upon the state forced by the external MPU, when
the start up sequence is completed. Under no situation the
NCN6000 shall launch automatically a smart card ATR
sequence. Assuming PWR_ON = H, the CRD_VCC voltage
is maintained whatever be the logic level presents on Chip
Select, pin 6.
At the end of the transaction, asserted by the MPU
(PWR_ON = L, CS = L), or under a card extraction, the
ISO78163 power down sequence takes place:
CRD_RST
CRD_CLK
CRD_IO
CRD_VCC
When CS = H, the bidirectional I/O line (pins 8 and 15)
is forced into the High impedance mode to avoid signal
collision with any data coming from the external MPU.
The CRD_VCC voltage is controlled by means of CS and
PWR_ON logic signal as depicted in Figure 14. The
PWR_ON logic level define the CRD_VCC voltage status,
the amplitude being the one pre programmed into the chip.
In order to avoid uncontrolled command applied to the
smart card, the NCN6000 internal logic circuit, together
with the Vbat monitoring, clamps the card outputs until the
CRD_VCC voltage reaches the minimum value. During the
CRD_VCC slope, all the card outputs are kept Low and no
spikes can be write to the smart card. The oscillogram on the
right hand side is a magnification of the curves given on the
opposite side.
CS
PWR_ON
CRD_VCC
CRD_VCC
Rise Time
CRD_VCC
No Change
CRD_VCC
Power Down Fall Time
CRD_VCC No Change
250 s
2 ms
Figure 14. Card Power Supply Control
Figure 15. Smart Card Signals Sequence at Power On
CRD_VCC
CRD_CLK
CP = 15 pF
CRD_RST
CRD_IO
5.0 V
CRD_VCC
CRD_CLK
CRD_RST
CRD_IO
5.0 V
CP = 15 pF
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCN6000/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Compact Smart Card Interface IC |
| NCN6000DTB | 功能描述:輸入/輸出控制器接口集成電路 2.7V POS/ATM Smart 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 |
| NCN6000DTBG | 功能描述:輸入/輸出控制器接口集成電路 2.7V POS/ATM Smart Card Interface 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 |
| NCN6000DTBR2 | 功能描述:輸入/輸出控制器接口集成電路 2.7V POS/ATM Smart 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 |
| NCN6000DTBR2G | 功能描述:輸入/輸出控制器接口集成電路 2.7V POS/ATM Smart Card Interface 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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