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參數(shù)資料
| 型號： | TDA8034HN/C1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)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)： | 27/30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
6 of 30
NXP Semiconductors
TDA8034HN
Smart card interface
8.2 Voltage supervisor
The voltage supervisor monitors the voltage of the VDDP, VDD and VDD(INTF) supplies
providing both Power-On Reset (POR) and supply drop-out detection during a card
session. The supervisor threshold voltages for VDDP and VDD are set internally, and for
VDD(INTF) externally by pin PORADJ. As long as VDD is less than Vth + Vhys, the IC remains
inactive irrespective of the command line levels. After VDD has reached a level higher than
Vth + Vhys, the IC remains inactive for the duration of tw. The output of the supervisor is
sent to a digital controller in order to reset the TDA8034HN. This defined reset pulse of
approximately 8 ms, i.e. (tw = 1024 1fosc(int)low), is used internally to maintain the IC in
the Shutdown mode during the supply voltage power on; see Figure 4. A deactivation
sequence is performed when either VDD, VDDP or VDD(INTF) falls below Vth.
Remark: fosc(int)low is the low frequency (or inactive) mode of the defined fosc(int)
parameter.
Fig 3.
Voltage supervisor circuit
Fig 4.
Voltage supervisor waveforms
001aal138
REFERENCE
VOLTAGE
VDD
PORADJ
VCC_SEL2
VDDP
VDD(INTF)
R1
R2
001aak993
tw
power on
supply dropout
power off
Vth + Vhys
Vth
VDD
ALARMN
(internal signal)
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相關(guān)代理商/技術(shù)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(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 |
| TDA8034T/C1,118 | 功能描述:接口 - 專用 SMART CARD INTERFACE 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 |
| 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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