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參數(shù)資料
| 型號： | TDA8034HN/C1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC24 |
| 封裝： | 4 X 4 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT616-1, HVQFN-24 |
| 文件頁數(shù)： | 29/30頁 |
| 文件大?。?/td> | 265K |
| 代理商： | TDA8034HN/C1 |
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TDA8034HN
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3.1. — 5 September 2011
8 of 30
NXP Semiconductors
TDA8034HN
Smart card interface
8.4 Input and output circuits
When pins I/O and I/OUC are pulled HIGH using an 11 k
resistor between pins I/O and
VCC and/or between pins I/OUC and VDD(INTF), both lines enter the idle state. Pin I/O is
referenced to VCC and pin I/OUC to VDD(INTF), thus allowing operation at VCC VDD(INTF).
The first side on which a falling edge occurs becomes the master. An anti-latch circuit
disables falling edge detection on the other line, making it the slave. After a time delay td,
the logic 0 present on the master-side is sent to the slave-side. When the master-side
returns logic 1, the slave-side sends logic 1 during time delay (tw(pu)). After this sequence,
both master and slave sides return to their idle states.
The active pull-up feature ensures fast LOW-to-HIGH transitions making the TDA8034HN
capable of delivering more than 1 mA, up to an output voltage of 0.9VCC, at a load of
80 pF. At the end of the active pull-up pulse, the output voltage is dependent on the
internal pull-up resistor value and load current. The current sent to and received from the
card’s I/O lines is limited to 15 mA at a maximum frequency of 1 MHz.
8.5 Shutdown mode
After a power-on reset, if pin CMDVCCN is HIGH, the circuit enters the Shutdown mode,
ensuring only the minimum number of circuits are active while the TDA8034HN waits for
the microcontroller to start a session.
all card contacts are inactive. The impedance between the contacts and GND is
approximately 200
.
pins I/OUC, AUX1UC and AUX2UC are high-impedance using the 11 k pull-up
resistor connected to VDD(INTF)
the voltage generators are stopped
the voltage supervisor is active
the internal oscillator runs at its lowest frequency (fosc(int)low)
8.6 Deep shutdown mode
When the smart card reader is inactive, the TDA8034HN will enter Deep shutdown mode
if pin CMDVCCN is forced HIGH and pins VCC_SEL1 and VCC_SEL2 are LOW. In Deep
shutdown mode, all circuits are disabled and pin OFFN follows the status of pin PRESN.
Changing the status of either pin CMDVCCN, VCC_SEL1 or VCC_SEL2 exits Deep
shutdown mode; see Figure 6.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8034T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart card interface |
| TDA8034T/C1,112 | 功能描述:接口 - 專用 SMART CARD INTERFACE RoHS:否 制造商:Texas Instruments 產品類型: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 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| TDA8034T/C1,118 | 功能描述:接口 - 專用 SMART CARD INTERFACE RoHS:否 制造商:Texas Instruments 產品類型: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 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| TDA8035C1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart card interface externally by a resistor bridge |
| TDA8035HN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart card interface externally by a resistor bridge |
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