The read speed of the Winbond W25Q128BV series NOR Flash is determined by its operating modes:

• Standard SPI Mode: 104MHz for the clock.
• DUAL SPI Mode: 208MHz of equivalent clock frequency.
• QUAD SPI Mode: Maximum clock frequency up to 320MHz.

The following are the main features of the Winbond W25Q128BV series NOR Flash, which can be referred to for quick product selection:

Storage Capacity: 

The capacity is 128Mbit, which is 16MB. There are 65,536 programmable pages in total, each page with 256 bytes. There are 4,096 erasable sectors, and they make up the size of 256 erasable blocks.

Interface Modes:

Standard SPI, Dual-SPI, and QUAD-SPI mode. The default SPI clock is 104MHz and up to 208MHz in the same frequency; the device has with DUAL_SPI mode and goes up to 320MHz in QUAD_SPI mode.

Supply Voltage: The supply range is 2.6V.

Power Consumption:

 The present power usage is just 4mA during active mode and less than one μA during sleep mode.

Package Type:

The WSON is an 8x6 mm package code. Package options: 8x6 mm WSON (package code E), 300 mil SOIC (package code F).

Write-protect Function:

 Hardware write-protect function exists, and the HOLD and WP pins can achieve programming write protection; this can be divided into top/bottom memory or all range.

Other Characteristics:

Conform to JEDEC standard, 64-bits of independent serial number (including factory ID and chip ID); the erase and write life for uploading is 100,000 times, data storage time is up to 20 years; the working temperature is -40℃ to +85℃, suitable for industry.

What’s more, the W25Q128BV series can achieve more than 80MHz read speed via 4-wire SPI mode (tested by real data).