Lower voltage next goal for low-power DDR
Marc Greenberg, Denali Software
EE Times (06/09/2008 12:00 AM EDT)
Low-power DDR2 (LPDDR2), a next-generation low-power memory technology for mobile and embedded designs that's being defined by companies participating in Jedec standards, offers higher speed, lower- voltage operation, larger capacities and lower pin count than the current generation--and lets nonvolatile memory share the same bus as SDRAM.
Whether you just call them mobile memories or use the formal Jedec naming system, low-power memories can be found today in all kinds of battery-operated and embedded applications. Such memories differ from those commonly used in desktop computers, laptops and servers (collectively, "PC memory"), such as DDR1, DDR2 and DDR3.
The current-generation low-power SDRAM (LPDDR1), available since 2003, still uses relatively high-voltage (1.8-V) I/Os and is limited to low speed (200 MHz). While the PC memory market has been shipping current-generation DDR3 parts in volume for more than a year, LPDDR1 memories have far more in common with two- generation-old DDR1 PC memory, sharing similar densities and operational modes.
While the target application for LPDDR1 memory in 2003 was often 2.5G mobile phones, today LPDDR1 devices are being used in other portable computing applications, such as global positioning systems, personal media players and the latest-generation 3G data-connected phones.
EE Times (06/09/2008 12:00 AM EDT)
Low-power DDR2 (LPDDR2), a next-generation low-power memory technology for mobile and embedded designs that's being defined by companies participating in Jedec standards, offers higher speed, lower- voltage operation, larger capacities and lower pin count than the current generation--and lets nonvolatile memory share the same bus as SDRAM.
Whether you just call them mobile memories or use the formal Jedec naming system, low-power memories can be found today in all kinds of battery-operated and embedded applications. Such memories differ from those commonly used in desktop computers, laptops and servers (collectively, "PC memory"), such as DDR1, DDR2 and DDR3.
The current-generation low-power SDRAM (LPDDR1), available since 2003, still uses relatively high-voltage (1.8-V) I/Os and is limited to low speed (200 MHz). While the PC memory market has been shipping current-generation DDR3 parts in volume for more than a year, LPDDR1 memories have far more in common with two- generation-old DDR1 PC memory, sharing similar densities and operational modes.
While the target application for LPDDR1 memory in 2003 was often 2.5G mobile phones, today LPDDR1 devices are being used in other portable computing applications, such as global positioning systems, personal media players and the latest-generation 3G data-connected phones.
To read the full article, click here
Related Semiconductor IP
- Ultra Ethernet MAC & PCS 100G/200G/400G/800G
- Ethernet PCS 100G/200G/400G/800G/1.6T
- Ethernet MAC 100G/200G/400G/800G/1.6T
- Junction Over-Temperature Detector with Linear Centigrade-to-Voltage Output - X-FAB XT018
- Performance P570 Gen 3
Related Articles
- In designing DDR interface, look before leaping
- Core-assisted approach accelerates debug of FPGA DDR II interfaces
- The Love/Hate Relationship with DDR SDRAM Controllers
- DDR Memory Systems at the Heart of Consumer Electronics
Latest Articles
- Closer in the Gap: Towards Portable Performance on RISC-V Vector Processors
- TTP: A Hardware-Efficient Design for Precise Prefetching in Ray Tracing
- Heterogeneous SoC Integrating an Open-Source Recurrent SNN Accelerator for Neuromorphic Edge Computing on FPGA
- A Reconfigurable Multiplier Architecture for Error-Resilient Applications in RISC-V Core
- ObfAx: Obfuscation and IP Piracy Detection in Approximate Circuits