 |
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 |
|
ST72104G2 数据表(PDF) 105 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST72104G2 数据表(HTML) 105 Page - STMicroelectronics |
|
|
105 / 135 page  ST72104G, ST72215G, ST72216G, ST72254G 105/135 CLOCK AND TIMING CHARACTERISTICS (Cont’d) 13.5.3 Crystal and Ceramic Resonator Oscillators The ST7 internal clock can be supplied with four different Crystal/Ceramic resonator oscillators. All the information given in this paragraph are based on characterization results with specified typical external componants. In the application, the reso- nator and the load capacitors have to be placed as close as possible to the oscillator pins in order to minimize output distortion and start-up stabiliza- tion time. Refer to the crystal/ceramic resonator manufacturer for more details (frequency, pack- age, accuracy...). Figure 64. Typical Application with a Crystal or Ceramic Resonator Notes: 1. Resonator characteristics given by the crystal/ceramic resonator manufacturer. 2. tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a quick VDD ramp-up from 0 to 5V (<50µs). 3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small RS value. Refer to crystal/ceramic resonator manufacturer for more details. Symbol Parameter Conditio ns Min Max Unit fOSC Oscillator Frequency 3) LP: Low power oscillator MP: Medium power oscillator MS: Medium speed oscillator HS: High speed oscillator 1 >2 >4 >8 2 4 8 16 MHz RF Feedback resistor 20 40 k Ω CL1 CL2 Recommanded load capacitances ver- sus equivalent serial resistance of the crystal or ceramic resonator (RS) RS=200Ω LP oscillator RS=200Ω MP oscillator RS=200Ω MS oscillator RS=100Ω HS oscillator 38 32 18 15 56 46 26 21 pF i2 OSC2 driving current VDD=5V LP oscillator VIN=VSS MP oscillator MS oscillator HS oscillator 40 110 180 400 100 190 360 700 µA Oscil. Typical Crystal or Ceramic Resonators CL1 [pF] CL2 [pF] tSU(osc) [ms] 2) Reference Freq. Characteristic 1) LP S-200-30-30/50 2MHz ∆f OSC=[±30ppm25 °C,±30ppm∆Ta], Typ. RS=200Ω 33 34 10~15 MP SS3-400-30-30/30 4MHz ∆f OSC=[±30ppm25 °C,±30ppm∆Ta], Typ. RS=60Ω 33 34 7~10 MS SS3-800-30-30/30 8MHz ∆f OSC=[±30ppm25 °C,±30ppm∆Ta], Typ. RS=25Ω 33 34 2.5~3 HS SS3-1600-30-30/30 16MHz ∆f OSC=[±30ppm25 °C,±30ppm∆Ta], Typ. RS=15Ω 33 34 1~1.5 LP CSA2.00MG 2MHz ∆f OSC=[±0.5%tolerance,±0.3% ∆Ta,±0.3%aging,±x.x%correl] 33 30 4.2 MP CSA4.00MG 4MHz ∆f OSC=[±0.5%tolerance,±0.3% ∆Ta,±0.3%aging,±x.x%correl] 33 30 2.1 MS CSA8.00MTZ 8MHz ∆f OSC=[±0.5%tolerance,±0.5% ∆Ta,±0.3%aging,±x.x%correl] 33 30 1.1 HS CSA16.00MXZ040 16MHz ∆f OSC=[±0.5%tolerance,±0.3% ∆Ta,±0.3%aging,±x.x%correl] 33 30 0.7 OSC2 OSC1 fOSC CL1 CL2 i2 RF ST72XXX RESONATOR WHEN RESONATOR WITH INTEGRATE D CAPACI TORS |
|
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
