A 512-Mb DDR3 SDRAM prototype with CIO minimization and self-calibration techniques
2006
A 1.5-V 512-Mb DDR3 Synchronous DRAM prototype was designed and fabricated in 80-nm technology. Critical to the signal integrity in DDR3 point-to-2points (P22P) interfacing is an efficient calibration scheme and C IO minimization, which were achieved by on-die-termination (ODT)-merged output drivers, SCR type ESD protection, and self-calibration scheme. The hybrid latency control scheme can turn the DLL off in standby mode, reducing power consumption. User-friendly functions such as temperature read-out from on-chip sensor and per-bank-refresh were also implemented.
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