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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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ST7232A 数据表(PDF) 122 Page - STMicroelectronics |
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ST7232A 数据表(HTML) 122 Page - STMicroelectronics |
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122 / 157 page  ST7232A 122/157 CLOCK AND TIMING CHARACTERISTICS (Cont’d) Notes: 1. Resonator characteristics given by the 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. Resonators all have different characteristics. Contact the manufacturer to obtain the appropriate values of external components and to verify oscillator performance. 4. 3rd overtone resonators require specific validation by the resonator manufacturer. Oscil. Typical Ceramic Resonators (information for guidance only) CL1 [pF] CL2 [pF] tSU(osc) [ms] 2) Reference3) Freq. Characteristic 1) LP CSA2.00MG 2MHz ∆f OSC=[±0.5%tolerance,±0.3% ∆Ta,±0.3%aging,±x.x%correl]22 22 4 MP CSA4.00MG 4MHz ∆f OSC=[±0.5%tolerance,±0.3% ∆Ta,±0.3%aging,±x.x%correl]22 22 2 MS CSA8.00MTZ 8MHz ∆f OSC=[±0.5%tolerance,±0.5% ∆Ta,±0.3%aging,±x.x%correl]33 33 1 HS CSA16.00MXZ0404) 16MHz ∆f OSC=[±0.5%tolerance,±0.3% ∆Ta,±0.3%aging,±x.x%correl]33 33 0.7 1 |
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