 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
STM32WB15CC датащи(PDF) 85 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
STM32WB15CC датащи(HTML) 85 Page - STMicroelectronics |
|
|
85 / 127 page  DS13258 Rev 4 85/127 STM32WB15CC Electrical characteristics 115 6.3.9 External clock source characteristics High-speed external user clock generated from an external source The high-speed external (HSE) clock is supplied with a 32 MHz crystal oscillator, or a sine or square wave. The STM32WB15CC include internal programmable capacitances that can be used to tune the crystal frequency in order to compensate the PCB parasitic one. The characteristics in Table 47 and Table 49 are measured over recommended operating conditions, unless otherwise specified. Typical values are referred to TA = 25 °C and VDD = 3.0 V. Table 46. Wakeup time using USART / LPUART(1) Symbol Parameter Conditions Typ Max Unit tWUUSART tWULPPUART Wakeup time needed to calculate the maximum USART / LPUART baud rate allowing to wakeup up from Stop mode when USART / LPUART clock source is HSI16 Stop mode 0 - 1.7 µs Stop mode 1 - 8.5 1. Specified by design, not tested in production. Table 47. HSE crystal requirements(1) Symbol Parameter Conditions Min Typ Max Unit fNOM Oscillator frequency - - 32 - MHz fTOL Frequency tolerance Includes initial accuracy, stability over temperature, aging and frequency pulling due to incorrect load capacitance. - - 50 ppm CL Load capacitance - 6 - 8 pF ESR Equivalent series resistance - - - 100 Ω 1. 32 MHz XTAL is specified for two specific references: NX2016SA and NX1612SA. Table 48. HSE clock source requirements(1) Symbol Parameter Conditions Min Typ Max Unit fHSE_ext User external clock source frequency - 32 - MHz fTOL Frequency tolerance Includes initial accuracy, stability over temperature and aging. - - 50 ppm VHSE Clock input voltage limits Sine or square wave, AC-coupled(2) 0.4 - 1.6 VPP tr, tr Rise and fall times 10% - 90%, square wave - - 15*VPP ns DuCy(HSE) Duty cycle - 45 50 55 % φn(HSE) Phase noise for 32 MHz Offset = 10 kHz - - -127 dBc / Hz Offset = 100 kHz - - -135 Offset = 1 MHz - - -138 1. Specified by design, not tested in production. 2. Only AC coupled is supported (capacitor 470 pF to 100 nF). |
|
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
