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IC42S32400L-7B Datasheet(PDF) 6 Page - Integrated Circuit Solution Inc |
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IC42S32400L-7B Datasheet(HTML) 6 Page - Integrated Circuit Solution Inc |
6 / 62 page IC42S32400 IC42S32400L 6 Integrated Circuit Solution Inc. DR038-0C 02/01/2005 Operation Mode Fully synchronous operations are performed to latch the commands at the positive edges of CLK.Table 2 shows the truth table for the operation commands. Table 2.Truth Table (Note (1),(2)) Note: 1. V =Valid,X =Don ’t care,L =Logic low,H =Logic high 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 BS 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. 6. DQM0-3 Command State CKEn-1 CKE DQM(6) BS0,1 A10 A11,A9-0 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) HX X V L L H L L Write and Auto Precharge Active (3) HX X V H L H L L Read Active (3) HX X V L L H L H Read and Autoprecharge Active (3) HX X 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) HX 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 X X X X Power Down Mode Entry Any(5) HL X X X X H X X X LH 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 Column address (A0 ~A7) Column address (A0 ~A7) |
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