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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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SPIRIT1 数据表(PDF) 9 Page - STMicroelectronics |
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SPIRIT1 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 94 page  SPIRIT1 Introduction Doc ID 022758 Rev 3 9/94 An integrated switched mode power supply (SMPS) regulator allows operation from a battery voltage ranging from +1.8 V to +3.6 V, and with power conversion efficiency of at least 80%. A crystal must be connected between XIN and XOUT. It is digitally configurable to operate with different crystals. As an alternative, an external clock signal can be used to feed XIN for proper operation. The SPIRIT1 also has an integrated low-power RC oscillator, generating the 34.7 kHz signal used as a clock for the slowest timeouts (i.e. sleeping and backoff). A standard 4-pin SPI bus is used to communicate with the external MCU. Four configurable general purpose I/Os are available. |
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