 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TLE42994GMV33 Datasheet(PDF) 19 Page - Infineon Technologies AG |
|
||||||||||||||||||||||||||||||
TLE42994GMV33 Datasheet(HTML) 19 Page - Infineon Technologies AG |
|
|
19 / 33 page  TLE42994V33 Block Description and Electrical Characteristics Data Sheet 19 Rev. 1.1, 2014-07-03 5.6 Reset Function The reset function provides several features: Output Undervoltage Reset: An output undervoltage condition is indicated by setting the Reset Output RO to “low”. This signal might be used to reset a microcontroller during low supply voltage. Power-On Reset Delay Time: The power-on reset delay time trd allows a microcontoller and oscillator to start up. This delay time is the time frame from exceeding the reset switching threshold V RT until the reset is released by switching the reset output “RO” from “low” to “high”. The power-on reset delay time t rd is defined by an external delay capacitor CD connected to pin D charged by the delay capacitor charge current I D,ch starting from VD =0V. If the application needs a power-on reset delay time t rd different from the value given in Power On Reset Delay Time, the delay capacitor’s value can be derived from the specified values in Power On Reset Delay Time and the desired power-on delay time: (1) with • C D: capacitance of the delay capacitor to be chosen • t rd,new: desired power-on reset delay time • t rd: power-on reset delay time specified in this datasheet For a precise calculation also take the delay capacitor’s tolerance into consideration. Reset Reaction Time: The reset reaction time avoids that short undervoltage spikes trigger an unwanted reset “low” signal. The reset reaction rime t rr considers the internal reaction time trr,int and the discharge time trr,d defined by the external delay capacitor C D (see typical performance graph for details). Hence, the total reset reaction time becomes: (2) with • t rr: reset reaction time • t rr,int: internal reset reaction time • t rr,d: reset discharge Optional Reset Output Pull-Up Resistor R RO,ext: The Reset Output RO is an open collector output with an integrated pull-up resistor. If needed, an external pull-up resistor to the output Q can be added. In Table 7 “Electrical Characteristics Reset Function” on Page 22 a minimum value for the external resistor R RO,ext is given. Reset Adjust Function The undervoltage reset switching threshold can be adjusted according to the application’s needs by connecting an external voltage divider ( R ADJ1, RADJ2) at pin RADJ. For selecting the default threshold connect pin RADJ to GND. CD trd new , trd ---------------- 100nF × = trr trd int , trr d , + = |
Similar Part No. - TLE42994GMV33 |
|
Similar Description - TLE42994GMV33 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
allmanual.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
