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FM24C64B-G データシート(PDF) 2 Page - Ramtron International Corporation |
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FM24C64B-G データシート(HTML) 2 Page - Ramtron International Corporation |
2 / 12 page FM24C64B Rev. 1.3 Feb. 2011 2 of 12 Address Latch 1,024 x 64 FRAM Array 8 SDA Counter Serial to Parallel Converter Control Logic SCL WP A0-A2 Data Latch Figure 1. FM24C64B Block Diagram Pin Description Pin Name I/O Pin Description A0-A2 Input Address 2-0: These pins are used to select one of up to 8 devices of the same type on the same two-wire bus. To select the device, the address value on the three pins must match the corresponding bits contained in the device address. The address pins are pulled down internally. SDA I/O Serial Data Address: This is a bi-directional pin used to shift serial data and addresses for the two-wire interface. It employs an open-drain output and is intended to be wire- OR’d with other devices on the two-wire bus. The input buffer incorporates a Schmitt trigger for noise immunity and the output driver includes slope control for falling edges. A pull-up resistor is required. SCL Input Serial Clock: The serial clock input for the two-wire interface. Data is clocked out of the device on the SCL falling edge, and clocked in on the SCL rising edge. The SCL input also incorporates a Schmitt trigger input for improved noise immunity. WP Input Write Protect: When WP is high, addresses in the upper quadrant of the logical memory map will be write-protected. Write access is permitted to the lower three- quarters of the address space. When WP is low, all addresses may be written. This pin is pulled down internally. VDD Supply Supply Voltage: 5V VSS Supply Ground |
同様の部品番号 - FM24C64B-G |
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同様の説明 - FM24C64B-G |
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