参考:
1 Architectural Options for LPDDR4 Implementation in YourNext Chip Design
2 LPDDR4 vs DDR4 vs LPDDR4x: Which One is Better?
3 LPDDR4 与 DDR4 与 LPDDR4x 内存：有何不同？
| DDR/LPDDR4 | die/package | channel(command/address bus、data bus)/die |
|---|---|---|
| DDR2 DDR3 DDR4 |
1 | 1 |
| LPDDR2 LPDDR3 |
1或2 | 1 |
| LPDDR4 | 1 | 2 |
| LPDDR4 | 2 | 4 |
