23A512-I/ST 存储器 SRAM Chip Sync Single 1.8V 512K-bit 64K x 8 25ns 8-Pin TSSOP Tube
23LCV512T-I/ST 微芯片技术SRAM Chip Sync Single 3.3V/5V 512K-bit 64K x 8 25ns 8-Pin TSSOP T/R
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