8Mbit serial flash memory has small form factor for IoT devices
The first of a series of 3V RV flash memories has been announced by Winbond Electronics. The W25Q80RV is an 8Mbit flash device capable of high performance, low power, and available in a small form factor for connected IoT edge devices used in industrial and consumer segments.
It can support fast software updates for products deployed in industrial factory automation and smart home control applications combining processing, connectivity, and sensor technologies, explained Winbond.
The W25Q80RV is manufactured in Winbond’s 12-inch wafer foundry utilising the latest generation of its 58nm technology. The die area is reduced by 40 per cent compared to its predecessor which was built with 90nm technology. The flash memory is suitable for space-constrained applications where the flash KGD or WLCSP is combined with the SoC in a system in package.
Read speed has also improved from 104MHz to 133MHz, with page programming time reduced by 50 per cent and active read current reduced by up to 20 per cent. All combine to “significantly optimise” system functions. XIP (eXecute-In-Place) of code is accomplished at a high frequency, enabling greater system response while consuming less energy.
Faster programming accelerates factory throughput and lowers manufacturing costs. The short time it takes to conduct an over the air (OTA) firmware update means greater system availability and less downtime, added the company.
The W25Q80RV supports all common single/dual/quad/QPI commands and read modes for XIP and code shadowing to RAM. This device operates on a single 2.7V to 3.6V power supply with a power-down current down to 1microA. Active read current is optimised from 12mA down to 10mA at 104MHz.
The 8Mbit (1Mbyte) flash is sectioned into 64kbyte or 32kbyte blocks and is further subdivided into small 4kbyte sectors for flexibility and storage efficiency in applications that require code, data, and parameter storage in the same device, said Winbond. It is also capable of 66MHz DDR (double data rate) operation enabling the system to achieve the same high speed (133MHz single data rate) read throughput at a lower clock frequency. The read command bypass mode supports faster memory access for true XIP operation by eliminating the command input cycle.
W25Q80RV is available now. This 8Mbit flash memory device is the first in a series, Winbond said it will release other members and densities of the RV series in coming months, enabling migration from existing W25QxxCV and W25QxxDV series to the W25QxxRV counterparts.
