Cadence的LPDDR4与DDR4详细对比说明，介绍了DDR4和LPDDR4的技术特点和应用场景，二者不是替代关系，而是可以互补共存

• Ultra-low-voltage core and I/O power supplies • Frequency range – 933–10 MHz (data rate range: 1866–20 Mb/s/pin) • 8n prefetch DDR architecture • 8 internal banks for concurrent operation • Multiplexed, double data rate, command/address inputs; commands entered on each CK_t/CK_c edge • Bidirectional/differential data strobe per byte of data (DQS_t/DQS_c) • Programmable READ and WRITE latencies (RL/WL) • Burst length: 8 • Per-bank refresh for concurrent operation • Temperature-compensated self refresh (TCSR) • Partial-array self refresh (PASR) • Deep power-down mode (DPD) • Selectable output drive strength (DS) • Clock-stop capability • On-die termination (ODT) • RoHS-compliant, “green” packaging

Low Power DDR4 spec LPDDR4

Micron 官网上的关于LPDDR4容量的说明手册，由于下载需要注册，特意下载下来共享。