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MB81ES653225-12L Datasheet(PDF) 6 Page - Fujitsu Component Limited. |
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MB81ES653225-12L Datasheet(HTML) 6 Page - Fujitsu Component Limited. |
6 / 10 page MB81ES653225-12/-12L 6 ■ FUNCTIONAL TRUTH TABLE *1 1. COMMAND TRUTH TABLE *2, *3, *4 *1 : V = Valid, L = Logic Low, H = Logic High, X = either L or H. Row Address 128 page length : A12 to A0 64 page length : A13 to A0 32 page length : A14 to A0 Column Address 128 page length : A6 to A0 64 page length : A5 to A0 32 page length : A4 to A0 *2 : All commands assume no CSUS command on previous rising edge of clock. *3 : All commands are assumed to be valid state transitions. *4 : All inputs are latched on the rising edge of clock. *5 : NOP and DESL commands have the same effect. Unless specifically noted, NOP will represent both NOP and DESL command in later description. *6 : When the current state is idle and CKE = L, BST command will represent Deep Power Down command. Refer to “3. CKE TRUTH TABLE” in section “■FUNCTION TRUTH TABLE”. *7 : READ, READA, WRIT, WRITA and BST commands should only be issued after the corresponding bank has been activated (ACTV command) . Refer to “■STATE DIAGRAM”. *8 : ACTV command should only be issued after corresponding bank has been precharged (PRE or PALL command) . *9 : Required after power up. Refer to “22. POWER-UP INITIALIZATION” in section “■FUNCTIONAL DESCRIPTION”. *10 : MRS command should only be issued after all banks have been precharged (PRE or PALL command) . Refer to “■STATE DIAGRAM”. Function Symbol CKE CS RAS CAS WE BA A10 (AP) Address (Except for A10) n-1 n Device Deselect *5 DESL H X H XXXXX X No Operation *5 NOP H X L HHH X X X Burst Stop *6, *7 BST H X L H H L X X X Read *7 READ H X L H L H V L Column Address Read with Auto-precharge *7 READA H X L H L H V H Column Address Write *7 WRIT H X L H L L V L Column Address Write with Auto-precharge *7 WRITA H X L H L L V H Column Address Bank Active *8 ACTV H X L L H H V Row Address Precharge Single Bank PRE H X L L H L V L X Precharge All Banks PALL H X L L H L X H X Mode Register Set *9, *10 MRS H X L L L L V V V |
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