Serial flash devices boast fast erase time - Embedded.com

Serial flash devices boast fast erase time

According to Microchip Technology, the SST26VF series of 3-V Serial Quad I/O (SQI) CMOS SuperFlash memory devices provides the fastest erase times in the industry, minimizing the time required for testing and performing firmware updates. Sector and block erase commands are completed in just 18 ms, and a full chip-erase operation is completed in 35 ms. Competing devices require 10 to 20 seconds to complete a full chip erase, making the SST26VF approximately 400 times faster.

The three devices in the SST26VF series offer 16-Mbit, 32-Mbit, and 64-Mbit storage capacities. Their SQI interface is a low-pin-count, high-speed 104-MHz quad-bit address and data multiplex I/O interface that allows for high data throughput in a small package. This serial interface enables low-latency execute-in-place capability with minimal processor buffer memory, reducing the overall design footprint. The SST26VF family achieves faster data throughput than a comparable x16 parallel flash device without the associated high cost and high pin count of parallel flash.

Well-suited for energy-efficient embedded systems, the SST26VF consumes 15 µA typical in standby mode. Active read current at 104 MHz is 15 mA typical. The combination of 3-V operation with low power consumption and small form-factor packaging makes the parts appropriate for servers, printers, cloud computing systems, HDTV, Internet gateways, appliances, security systems, and a broad range of embedded systems.


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