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參數(shù)資料
| 型號： | 73S8009C-20IMR/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC20 |
| 封裝： | ROHS COMPLIANT, QFN-20 |
| 文件頁數(shù)： | 13/33頁 |
| 文件大小： | 481K |
| 代理商： | 73S8009C-20IMR/F |
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73S8009C Data Sheet
DS_8009C_025
20
Rev. 1.3
3.4
System Controller Interface
Four separate digital inputs and two outputs allow direct control of the card interface from the host:
Pin CS: Chip select control.
Pin
CMDVCC# and/or CMDVCC%: When low, starts an activation sequence.
Pin RSTIN: controls the card RST signal.
Pin RDY: Indicates when smart card power supply is stable and ready.
Pin
OFF: Indicator of card presence and any card fault conditions.
Interrupt output to the host: When the card is not activated, the
OFF pin informs the host about the card
presence only (Low = No card in the reader, high = card inserted). When
CMDVCC (#/% signals) is/are
set low (card activation sequence requested from the host), low level on
OFF means a fault has been
detected (e.g. card removal during card session, or voltage fault, or thermal / over-current fault) that
automatically initiates a deactivation sequence. The smart card pass through signals are enabled when
the RDY conditions are met.
3.5
Card Power Supply and Voltage Supervision
The 73S8009C smart card interface IC incorporates an LDO voltage regulator for the card power supply,
VCC (VP to VCC conversion uses an internal LDO). The voltage output is controlled by the digital input
sequence of
CMDVCC# and CMDVCC%. This regulator is able to provide 1.8V, 3V or 5V card voltage
sourced from the VP power supply. Internal digital circuitry is also powered by the VP power supply
(except for the ON/OFF circuitry which is powered from VPC). A voltage supervisor checks the value of
the voltage VCC. A card deactivation sequence is forced upon fault detected by voltage supervisor,
overcurrent condition, or card removal event. The voltage regulator can provide a card current of 65mA
in compliance with EMV 4.1 for 3-V and 5-V cards. The signals
CMDVCC# and CMDVCC% control the
turn-on, output voltage value, and turn-off of VCC. When either signal is asserted low, VCC will ramp to the
selected value or if both signals are asserted low (within 400ns of each other), VCC will ramp to 1.8V.
These signals are edge triggered. If
CMDVCC% is asserted low (to command V
CC to be 5V) and at a
much later time (greater than 2
s, typically), CMDVCC# is asserted low, it will be ignored (and vice
versa.)
At the assertion (low) of either or both
CMDVCC (#/% signals), V
CC will rise to the requested value. When
VCC rises to an acceptable value, and stays above that value for approximately 20s, RDY will be set
high. Approximately 510
s after the fall of CMDVCC (#/%), the circuit will check the see if V
CC is at or
above the required minimum value (indicated by RDY=1) and if not, will begin an emergency deactivation
sequence. During the 510
s time, card removal, or de-assertion of CMDVCC (#/%) shall also initiate an
emergency deactivation sequence. The circuit provides over-current protection and limits Icc to 150mA,
maximum for self-protection. When an over-current condition is sensed, the circuit will invoke a de-
activation sequence.
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| 73S8009C-20IM/F | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC20 |
| 73S8009C-32IM/F | POWER SUPPLY SUPPORT CKT, QCC32 |
| 73S8009C-32IMR/F | POWER SUPPLY SUPPORT CKT, QCC32 |
| 73S8009R-ILR | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| 73S8009R-IMR | SPECIALTY ANALOG CIRCUIT, QCC20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 73S8009C-32IM/F | 功能描述:輸入/輸出控制器接口集成電路 Smart Card Interface IC 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| 73S8009C-32IM/F1 | 功能描述:輸入/輸出控制器接口集成電路 Smart Card Interface IC 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| 73S8009C-32IMR/F | 功能描述:輸入/輸出控制器接口集成電路 Smart Card Interface IC 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| 73S8009C-32IMR/F1 | 功能描述:輸入/輸出控制器接口集成電路 Smart Card Interface IC 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| 73S8009C-DB | 功能描述:界面開發(fā)工具 73S8009C 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 |
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