SST25VF020-20-4C-SAE

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Memory devices play an important role in both personal and industrial computing. The SST25VF020-20-4C-SAE is a 2 megabyte serial flash memory device designed by Silicon Storage Technology, Inc. (SST). It offers a low-cost, SOIC-8 pin compatible alternative to the popular SST25VF016B, a 1 megabyte serial flash memory device. The SST25VF020-20-4C-SAE offers fast read performance with 25 MHz SPI bus transfer, low power consumption, 1.7V to 3.6V voltage operation, 64-byte page write capability, and global block protection of all user memory. It is a robust, reliable, and cost effective memory solution for a variety of applications.

SST25VF020-20-4C-SAE is primarily used in embedded system designs where critical data needs to be retained after power loss or system reset. It can be used in applications such as data logging, parameter or setting storage, or code shadowing and patching. The SST25VF020-20-4C-SAE is suitable for various automotive, medical, communications, industrial, and consumer product applications.

This memory device is based on the Serial Peripheral Interface (SPI) bus. The SPI bus is a synchronous, full-duplex bus consisting of four logic signals: Serial Clock (SCLK), Master Output Slave Input (MOSI), Master Input Slave Output (MISO), and Chip Select (CS). Data is written and read by transferring it serially on the SPI bus. To initiate a write or read operation, the device must first be selected by bringing the CS pin low. After the chip has been selected, the data is transferred bit-by-bit on the MOSI and MISO lines while clocking the SCLK pin.

The SST25VF020-20-4C-SAE operates at 1.8V to 3.6V, offering true triangular voltage control. It features selectable 1x or 2x outputs, low power consumption (35 mA maximum) during write and erase operations, fast read performance (access times are specified for 25 MHz and 50 MHz), and write/erase up to 64 bytes per write/erase operation. It is also protected from accidental write/erase operations via a global block protection feature.

The SST25VF020-20-4C-SAE is a low cost, low power, serial flash memory device that is suitable for a variety of automotive, medical, communications, industrial, and consumer product applications. It provides fast read performance, write/erase protection, and a wide voltage range, making it a robust and reliable solution.

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