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AS4C16M16SA-6TIN Datasheet(PDF) 7 Page - Alliance Semiconductor Corporation |
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AS4C16M16SA-6TIN Datasheet(HTML) 7 Page - Alliance Semiconductor Corporation |
7 / 55 page AS4C16M16SA-C&I Confidential 6 Rev. 3.0 Mar. /2015 Operation Mode Fully synchronous operations are performed to latch the commands at the positive edges of CLK. Table 4 shows the truth table for the operation commands. Table 4. Truth Table (Note (1), (2)) Command State CKEn-1 CKEn DQM BA0,1 A10 A0-9,11-12 CS# RAS# CAS# WE# BankActivate Idle(3) H X X V Row address L L H H BankPrecharge Any H X X V L X L L H L PrechargeAll Any H X X X H X L L H L Write Active(3) H X V V L Column address (A0 ~ A8) L H L L Write and AutoPrecharge Active(3) H X V V H L H L L Read Active(3) H X V V L Column address (A0 ~ A8) L H L H Read and Autoprecharge Active(3) H X V V H L H L H Mode Register Set Idle H X X OP code L L L L No-Operation Any H X X X X X L H H H Burst Stop Active(4) H X X X X X L H H L Device Deselect Any H X X X X X H X X X AutoRefresh Idle H H X X X X L L L H SelfRefresh Entry Idle H L X X X X L L L H SelfRefresh Exit Idle L H X X X X H X X X (SelfRefresh) L H H H Clock Suspend Mode Entry Active H L X X X X H X X X L V V V Power Down Mode Entry Any(5) H L X X X X H X X X L H H H Clock Suspend Mode Exit Active L H X X X X X X X X Power Down Mode Exit Any L H X X X X H X X X (PowerDown) L H H H Data Write/Output Enable Active H X L X X X X X X X Data Mask/Output Disable Active H X H X X X X X X X Note: 1. V=Valid, X=Don't Care, L=Low level, H=High level 2. CKEn signal is input level when commands are provided. CKEn-1 signal is input level one clock cycle before the commands are provided. 3. These are states of bank designated by BA signal. 4. Device state is 1, 2, 4, 8, and full page burst operation. 5. Power Down Mode can not enter in the burst operation. When this command is asserted in the burst cycle, device state is clock suspend mode. |
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