 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
TC3404 датащи(PDF) 10 Page - Microchip Technology |
|
|
|||||||||||||||||||||||||||||
TC3404 датащи(HTML) 10 Page - Microchip Technology |
|
|
10 / 16 page  TC3404 DS21413B-page 10 © 2002 Microchip Technology Inc. 3.3 Power Fail Detector The Power Fail detector is a comparator in which the inverting input is connected to the internal voltage reference. The non-inverting input is the PFI pin of the TC3404 and the PFO pin is the active low, open drain output. This comparator is suitable as an early warning fail or low battery indicator. In a typical application, where a voltage regulator is being used to supply power to a system, the Power Fail comparator would monitor the input voltage to the regulator while the VDD monitor would measure the output voltage of the regulator. Both PFO and RESET would drive interrupt pins of a microcontroller. ThePower Fail detector may beusedas a Wake-upor Watchdog Timer. The Typical Application circuit shows an RC network on PFI with the capacitor tied to a tristated µC I/O pin. If R4 is 1 MΩ and C2 is 10µF, the time constant is roughly ten seconds. The µC resets the RC network by driving the I/O tied to PFI low and then tristating it. The RC network will ramp to 1.23V in roughly 9 seconds, assuming a VBATT of 3.0V. With PFO tied to a µC input or interrupt, the µC will see a low to high transition on PFO when the voltage on PFI exceeds 1.23V. The PFO output is specified to be valid for VDD =1.3 to 5.5V. |
|
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю 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 |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
