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Static random-access memory (static RAM or SRAM) is a type of random-access memory (RAM) that uses latching circuitry (flip-flop) to store each bit. SRAM is volatile memory; data is lost when power is removed. The static qualifier differentiates SRAM from dynamic random-access memory (DRAM):
The Miniature Card is 37 × 45 × 3.5 mm thick and can have devices on both sides of the substrate. Its 60-pin connector was a memory-only subset of PCMCIA and featured 16-bit data and 24-bit address bus with 3.3 or 5-volt signaling. Miniature Cards support Attribute Information Structure (AIS) in the I²C identification EEPROM.
In SRAM, the memory cell is a type of flip-flop circuit, usually implemented using FETs. This means that SRAM requires very low power when not being accessed, but it is expensive and has low storage density. A second type, DRAM, is based around a capacitor. Charging and discharging this capacitor can store a "1" or a "0" in the cell.
PS Vita Memory Card 2012 64 GB Subcompact (15 mm × 12.5 mm × 1.6 mm [7]), compulsory DRM, up to 64 GB, proprietary (can be used on PS Vita only) P2 (storage media) Panasonic MicroP2: 2012 64 GB MicroP2 is a SDXC/SDHC card conforming to UHS-II (Ultra High Speed bus), and can be read by common SDHC/SDXC card readers. xD: Olympus, Fujifilm, Sony
Some Game Boy cartridges included random-access memory (RAM) to increase the device's performance and allow game progress to be saved. This memory typically came in the form of an 8 KB EEPROM chip, a 32 KB SRAM chip, or later, a 128 KB flash memory chip. SRAM chips required a battery to retain data when the Game Boy was powered off.
As PC Cards (was PCMCIA), Linear Flash cards should have a Card Information Structure (CIS). However, many memory cards do not have a CIS. However, many memory cards do not have a CIS. Linear Flash cards begin to develop bad blocks after about 100,000 erase/write cycles and thus are of dubious value on the second-hand market.