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STM32F401CB 数据表(PDF) 113 Page - STMicroelectronics |
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STM32F401CB 数据表(HTML) 113 Page - STMicroelectronics |
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113 / 135 page  Electrical characteristics STM32F401xB STM32F401xC 113/135 DocID024738 Rev 6 6.3.25 RTC characteristics CMD, D inputs (referenced to CK) in SD default mode tISUD Input setup time SD fpp = 24MHz 1.5 - - ns tIHD Input hold time SD fpp = 24MHz 0.5 - - CMD, D outputs (referenced to CK) in SD default mode tOVD Output valid default time SD fpp =24MHz - 4.5 6.5 ns tOHD Output hold default time SD fpp =24MHz 3.5 - - 1. Guaranteed by characterization results. 2. VDD = 2.7 to 3.6 V. Table 77. Dynamic characteristics: SD / MMC characteristics(1)(2) (continued) Symbol Parameter Conditions Min Typ Max Unit Table 78. RTC characteristics Symbol Parameter Conditions Min Max -fPCLK1/RTCCLK frequency ratio Any read/write operation from/to an RTC register 4- |
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