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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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FM25V05 Arkusz danych(PDF) 4 Page - Ramtron International Corporation |
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FM25V05 Arkusz danych(HTML) 4 Page - Ramtron International Corporation |
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4 / 16 page  FM25V05 - 512Kb SPI FRAM Rev. 2.0 May 2010 Page 4 of 16 System Hookup The SPI interface uses a total of four pins: clock, data-in, data-out, and chip select. A typical system configuration uses one or more FM25V05 devices with a microcontroller that has a dedicated SPI port, as Figure 3 illustrates. Note that the clock, data-in, and data-out pins are common among all devices. The Chip Select and Hold pins must be driven separately for each FM25V05 device. For a microcontroller that has no dedicated SPI bus, a general purpose port may be used. To reduce hardware resources on the controller, it is possible to connect the two data pins together and tie off the Hold pin. Figure 4 shows a configuration that uses only three pins. Figure 3. 1Mbit (128KB) System Configuration with SPI port Figure 4. System Configuration without SPI port |
Podobny numer części - FM25V05 |
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Podobny opis - FM25V05 |
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