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FM25V10 数据表(PDF) 4 Page - Cypress Semiconductor |
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FM25V10 数据表(HTML) 4 Page - Cypress Semiconductor |
4 / 16 page FM25V10 - 1Mb SPI FRAM Rev. 3.0 Jan. 2012 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 FM25V10 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 FM25V10 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. SPI Microcontroller FM25V10 Q D C S HOLD FM25V10 Q D C S HOLD SCK MOSI MISO SS1 SS2 HOLD1 HOLD2 MOSI : Master Out Slave In MISO : Master In Slave Out SS : Slave Select Figure 3. 2Mbit (256KB) System Configuration with SPI port Microcontroller FM25V10 Q D C S HOLD P1.0 P1.1 P1.2 Figure 4. System Configuration without SPI port |
类似零件编号 - FM25V10 |
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类似说明 - FM25V10 |
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