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IC43R32400-4B Datasheet(PDF) 6 Page - Integrated Circuit Solution Inc |
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IC43R32400-4B Datasheet(HTML) 6 Page - Integrated Circuit Solution Inc |
6 / 18 page IC43R32400 6 Integrated Circuit Solution Inc. DDR003-0B 11/10/2004 VSS Supply Ground: Ground for the input buffers and core logic . VDDQ Supply DQ Power: Provide isolated power to DQs for improved noise immunity. VSSQ Supply DQ Ground: Provide isolated ground to DQs for improved noise immunity. VREF Supply Reference Voltage for Inputs: +0.5 x VDDQ NC - No Connect: These pins should be left unconnected. Note: The timing reference point for the differential clocking is the cross point of the CK and CK#. For any applications using the single ended clocking, apply VREF to CK# pin. Command State CKEn-1 CKEn DM BA1 BA0 A8 A11-A9,A7-0 CS# RAS# CAS# WE# BankActivate Idle (3) H X X V V Row address L L H H BankPrecharge Any H X X V V L X L L H L PrechargeAll Any H X X X X H X L L H L Write Active (3) H X V V V L L H L L Write and Auto Precharge Active (3) H X V V V H L H L L A0~A7 Read Active (3) H X X V V L L H L H Read and Autoprecharge Active (3) H X X V V H L H L H A0~A7 Mode Register Set Idle H X X L L OP code L L L L Extended Mode Register Set Idle H X X L H OP code L L L L No-Operation Any H X X X X X X L H H H Device Deselect Any H X X X X X X H X X X Burst Stop Any(4) H X X X X X X L H H L AutoRefresh Idle H H X X X X X L L L H SelfRefresh Entry Idle H L X X X X X L L L H SelfRefresh Exit Idle L H X X X X X H X X X (SelfRefresh) L H H H Power Down Mode Entry Idle/Active(5) H L X X X X X H X X X L H H H Power Down Mode Exit Any L H X 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 X Data Mask/Output Disable Active H X H X X X X X X X X Column address Column address Note: 1. V =Valid Data, 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 BA1 signals. 4. Read burst stop with BST command for all burst types. 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. Operation Mode Fully synchronous operations are performed to latch the commands at the positive edges of CK. Table 2 shows the truth table for the operation commands. Table 2. Truth Table (Note (1), (2) ) |
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