 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
AM2434...ALV 数据表(PDF) 144 Page - Texas Instruments |
|
|
|||||||||||||||||||||||||||||
AM2434...ALV 数据表(HTML) 144 Page - Texas Instruments |
|
|
144 / 280 page  7.10.4.1.1 MCU_OSC0 Internal Oscillator Clock Source Figure 7-17 shows the recommended crystal circuit. All discrete components used to implement the oscillator circuit must be placed as close as possible to the MCU_OSC0_XI and MCU_OSC0_XO pins. Device MCU_OSC0_XO MCU_OSC0_XI C f1 Crystal Rd C f2 (Optional) Figure 7-17. MCU_OSC0 Crystal Implementation The crystal must be in the fundamental mode of operation and parallel resonant. Table 7-17 summarizes the required electrical constraints. Table 7-17. MCU_OSC0 Crystal Circuit Requirements PARAMETER MIN TYP MAX UNIT Fxtal Crystal Parallel Resonance Frequency 25 MHz Fxtal Crystal Frequency Stability and Tolerance Ethernet RGMII and RMII not used ±100 ppm Ethernet RGMII and RMII using derived clock ±50 CL1+PCBXI Capacitance of CL1 + CPCBXI 12 24 pF CL2+PCBXO Capacitance of CL2 + CPCBXO 12 24 pF CL Crystal Load Capacitance 6 12 pF Cshunt Crystal Circuit Shunt Capacitance ESRxtal = 30 Ω 25 MHz 7 pF ESRxtal = 40 Ω 25 MHz 5 pF ESRxtal = 50 Ω 25 MHz 5 pF ESRxtal Crystal Effective Series Resistance (1) Ω (1) The maximum ESR of the crystal is a function of the crystal frequency and shunt capacitance. See the Cshunt parameter. When selecting a crystal, the system design must consider temperature and aging characteristics of the crystal based on worst case environment and expected life expectancy of the system. Table 7-18 details the switching characteristics of the oscillator. AM2434, AM2432, AM2431 SPRSP65D – APRIL 2021 – REVISED AUGUST 2022 www.ti.com 144 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: AM2434 AM2432 AM2431 |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 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 |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
