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MB81P643287-50 Datasheet(PDF) 7 Page - Fujitsu Component Limited. |
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MB81P643287-50 Datasheet(HTML) 7 Page - Fujitsu Component Limited. |
7 / 65 page MB81P643287-50/-60 7 DM TRUTH TABLE (Effective during Write mode) CKE TRUTH TABLE *11: The REF and SELF commands should only be issued after all banks have been precharged (PRE or PALL command). In case of SELF command, it should also be issued after the last read data have been appeared on DQ. Refer to “s STATE DIAGRAM”. *12: CKE must bring to Low level together with REF command. *13: The PDEN command should only be issued after the last read data have been appeared on DQ and after the lDPL is satisfied from last write data input. Function Command CKE DM0 DM1 DM2 DM3 (n - 1) (n) Data Mask for DQ0 to DQ7 MASK0 HXHX X X Data Mask for DQ8 to DQ15 MASK1 H X X H X X Data Mask for DQ16 to DQ23 MASK2 HX X X HX Data Mask for DQ24 to DQ31 MASK3 H X X X X H Current State Function Notes Command CKE CS RAS CAS WE AP BA0 to BA2 A0 to A10 DQ0 to DQ31 (n-1) (n) Idle Auto-refresh *11 REF H H L L L H X X X — Idle Self-refresh Entry *11 *12 SELF H L L L L H X X X Hi-Z Self- refresh Self-refresh Continue — L L X X X X X X X Hi-Z Self- refresh Self-refresh Exit SELFX LH L H H H X X X Hi-Z LH H X X X X X X Hi-Z Idle Power Down Entry *13 PDEN HL L H H H X X XHi-Z HL H X X X X X XHi-Z Power Down Power Down Continue — L L X X X X X X X Hi-Z Power Down Power Down Exit PDEX LH L H H H X X X Hi-Z LH H X X X X X X Hi-Z |
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