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EMC326SP16AJ-45LF Datasheet(PDF) 9 Page - Emerging Memory & Logic Solutions Inc |
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EMC326SP16AJ-45LF Datasheet(HTML) 9 Page - Emerging Memory & Logic Solutions Inc |
9 / 64 page EMC326SP16AJ 2Mx16 CellularRAM 9 Preliminary Functional Description In general, CellularRAM devices are high-density alternatives to SRAM and Pseudo SRAM products, popular in low-power, portable applications. The 32Mb device contains a 33,554,432-bit DRAM core, organized as 2,097,152 addresses by 16 bits.The device implements the same high-speed bus interface found on burst mode Flash products. The CellularRAM bus interface supports both asynchronous and burst mode transfers. Page mode accesses are also included as a bandwidth-enhancing extension to the asynchronous read protocol. Power-Up Initialization 32Mb CellularRAM products include an on-chip voltage sensor used to launch the power-up initialization process. Initialization will configure the BCR and the RCR with their default settings. (See Figure 16 and 20) Vcc and VccQ must be applied simultaneously. When they reach a stable level at or above 1.7V, the device will require 150 µs to complete its self-initialization process. During the initialization period, CE# should remain HIGH. When initialization is complete, the device is ready for normal operation. Figure 2: Power-Up Initialization Timing Vcc VccQ Vcc=1.7V tPU Device Initialization Device ready for normal operation ≥ 150 µs |
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