 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
WM8741 датащи(PDF) 18 Page - Wolfson Microelectronics plc |
|
|
|||||||||||||||||||||||||||||
WM8741 датащи(HTML) 18 Page - Wolfson Microelectronics plc |
|
|
18 / 63 page  WM8741 Product Preview w PP Rev 1.3 October 2007 18 Figure 8 DVDD Power up Sequence Test Conditions DVDD = 3.3V, DGND = 0V, TA = +25 oC, TA_max = +125oC, TA_min = -25oC, DVDDmax = 3.6V, DVDDmin = 3.0V PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Power Supply Input Timing Information DVDD level to POR rising edge (DVDD rising) Vpor_hi Measured from DGND 1.86 V DVDD level to POR falling edge (DVDD falling) Vpor_lo Measured from DGND 1.83 V Table 7 Digital POR Timing In a real application the designer is unlikely to have control of the relative power up sequence of AVDD and DVDD. The POR circuit ensures a reasonable delay between applying power to the device and Device Ready. Figure 7 and Figure 8 show typical power up scenarios in a real system. DVDD must be established before the device can be written to. Any writes to the device before device ready will be ignored. Note: DVDD must be established before the MCLK is started. This will ensure all synchronisation circuitry within the device is fully initialised and ready. AVDD must be established before the device will output any signal. Whilst the device will output signal as soon as the Internal Analogue PORB indicates device ready, normal operation is not possible until the VMID pin has reached the midrail voltage. |
|
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
