Name
Title | ||
|---|---|---|
A 5Gb/s/pin 16Gb LPDDR4/4X Reconfigurable SDRAM with Voltage-High Keeper and a Prediction-based Fast-tracking ZQ Calibration |
Abstract | ||
|---|---|---|
A 5Gb/s/pin 16Gb LPDDR4/4X reconfigurable SDRAM with a self-mode detection scheme, a voltage-high keeper (VHK) for un-terminated load and a prediction-based fast-tracking ZQ algorithm is implemented in 10nm class (2nd generation) DRAM process. Providing a reconfigurable LVSTL with a mode detection scheme to support two different DRAM interface standards (LPDDR4/4X) depending on I/O supply voltage (VDDQ), a proposed design can maintain the system compatibility and longevity to the legacy controller and the PHY structure. The VHK for LPDDR4 enables the 3.2Gb/s operation in the un-terminated load similar to LPDDR4X by alleviating the inter symbol interference (ISI) through the controlled leakage current. In a ZQ calibration, the proposed ZQ algorithm achieves fast ZQ code searching, the calibration time can be reduced by 30% in PVT variation. Moreover, an internal ZQ calibration (IZQC) is newly adopted to minimize the variation of the driver strength to PVT variation. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.23919/VLSIC.2019.8778102 | 2019 Symposium on VLSI Circuits |
Keywords | Field | DocType |
voltage-high keeper,self-mode detection scheme,prediction-based fast-tracking ZQ algorithm,reconfigurable LVSTL,fast ZQ code searching,internal ZQ calibration,DRAM interface standards,class DRAM process,un-terminated load,2nd generation DRAM process,I/O supply voltage,VDDQ,legacy controller,PHY structure,controlled leakage current,PVT variation,driver strength,size 10.0 nm,storage capacity 16 Gbit,bit rate 3.2 Gbit/s | Dram,Control theory,Leakage (electronics),Computer science,Voltage,Electronic engineering,Interference (wave propagation),PHY,Detector,Calibration | Conference |
ISSN | ISBN | Citations |
2158-5601 | 978-1-7281-0914-5 | 0 |
PageRank | References | Authors |
0.34 | 0 | 24 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jinseok Heo | 1 | 6 | 3.05 |
| Kihan Kim | 2 | 0 | 0.34 |
| Donghoon Lee | 3 | 151 | 22.04 |
| Chang-Kyo Lee | 4 | 3 | 3.52 |
| daesik moon | 5 | 16 | 3.87 |
| Kiho Kim | 6 | 355 | 36.32 |
| Jin-Hyeok Baek | 7 | 0 | 1.01 |
| Sung-Woo Yoon | 8 | 0 | 0.34 |
| Hui-Kap Yang | 9 | 0 | 0.34 |
| Kyung-Ryun Kim | 10 | 11 | 2.32 |
| Youngjae Kim | 11 | 0 | 0.34 |
| Bokgue Park | 12 | 0 | 0.34 |
| Sujin Park | 13 | 44 | 6.56 |
| Joung-Wook Moon | 14 | 0 | 0.68 |
| Jae-Hyung Lee | 15 | 0 | 0.34 |
| Yun-Sik Park | 16 | 0 | 0.34 |
| Soobong Jang | 17 | 0 | 0.34 |
| Seok-Hun Hyun | 18 | 2 | 2.79 |
| Hyuck-Joon Kwon | 19 | 2 | 2.44 |
| Junghwan Choi | 20 | 279 | 33.08 |
| Young-Soo Sohn | 21 | 115 | 21.21 |
| Seung-Jun Bae | 22 | 167 | 32.40 |
| Kwang-Il Park | 23 | 163 | 25.68 |
| Jung-Bae Lee | 24 | 179 | 17.70 |