LP-SDRAM

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Except for the claims about LPDDR4 and LPDDR5, no evidence. - Mazoro ( discussion ) 8:08 pm , Jun 26, 2020 (CEST)

LP-SDRAM of the type LPDDR2

LP-SDRAM , spelled out Low Power SDRAM (English: low-energy SDRAM ), also known as mobile RAM , is a specially developed SDRAM for mobile use in smartphones , notebooks and PDAs .

If the specifications are otherwise the same , e.g. B. the memory clock or the data transfer rate , it has a reduced supply voltage from 3.3 volts to 1.8 volts in the first generation and a special deep power-down mode and performs a self-refresh if necessary , which mobile devices despite small batteries guarantee standby times for days or even weeks. Furthermore, it is characterized by significantly smaller component dimensions, especially in height. The same also applies to the "LP- DDR-SDRAM ", usually written LPDDR for short . In addition to higher clock and transmission rates and shorter access times , further developments also led to further reductions in the supply voltage. For example, while an LPDDR3 just needed a voltage of 1.2 volts, the JEDEC adopted the specifications for LPDDR4 at the end of August 2014 , including the specification of a supply voltage of only 1.1 volts. In February 2019, its successor LPDDR5 was determined.

Individual evidence

1. ↑ DDR4: JEDEC adopts power-saving LPDDR4 , August 25, 2014, ComputerBase , accessed April 22, 2017
2. ↑ LPDDR5: Jedec specifies fast smartphone memory - Golem.de. Retrieved on July 19, 2019 (German).