The new standard reduces the consumption of the palmtop computer
JEDEC solid state technological cooperation has already announced the announcement of JESD209-2 LPDDR2 Lip river power memory apparatus standard. Can offer and suitable for enabling and downloading the websites which get rid of JEDEC, the new standard offers the power of advancing and manages the characteristic, the ones that share go non-volatile memory (NVM) Interface And the apt losing memory (SDRAM) ,And many kinds of density and pace. The standard will improve the design of the products like smart phone, the mobile phone, PDA, GPS unit, density can the portable game platform and other mobile devices in order to the memory that increase, it is small to improve performance stature, always cut down in the consumption, and a longer battery life.
Because of increasing the demand for the consumption reduced through the apparatus, JEDEC LPDDR2 standard offers several energy-conserving question characteristics. LPDDR2 includes from former (LPDDR) In 1.8 V for planting reducing of explanation interface of 1.2 V voltage memory technology, the cutting down of consumption that every one that will lead to the fact in 5,000 will exceed under the similar apparatus density and performance state. The standard goes still one step further to have a key 1.2 V around the apparatus (with having apparatus of 1.8 V key voltage to compare) Voltage,further reduce apparatus consumption.
In addition, LPDDR2 manages the motive force usage like that of bestiring oneself like some array self refresh and every bank and supports the advanced mechanism. Some array self refresh, when not required, for example, the part of allowing the array is to lose the electricity, allow to apply to confirm apparatus memory is required about a real-time usage foundation.
Share a bus interface
The first time, an single JEDEC standard centres on two kinds of different memory: NVM and SDRAM. JEDEC LPDDR2 standard allows these two kinds of memory types to have a public bus interface, so and the controller reducing pins and can be regarded as makes the memory apt to increase charters the density. LPDDR2 NVM and SDRAM apparatus can be piled up, because of an ordinary interface, simplify the memory and control personnel and interface to design very much, and provide the chance to keep space for products developer.
In JEDEC LPDDR2 standard, a lot of apparatus structures are supported to meet the requirement for large quantities of mobile devices, including:
An operating frequency is from 100 MHz to 533 MHz;
X8, the width of data of x16 and x32;
Two kinds of choices taken in advance (2 The location and 4 Location) And two 1.8 Vs and 1.2 kinds V a kind of key voltage choose;
The broad apparatus density (NVM: 64 Mbit to 32 Gbit, hits blue: 64 Mbit to 8 Gbit) ,Overtime.
” LPDDR2 standard advanced power of respect in JEDEC manage characteristic and flexible memory apparatus structure make a new generation to be little, and more efficient products that move of energy develop into possible, ” Mian Quddus, the executive’s president’s JEDEC board says. ” Reduce the consumption, improving performance and a NVM/SDRAM interface shared will help industry to provide prominent advantage developer and consumer for products. “
