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HM5264165FLTT-B60 Datasheet(PDF) 10 Page - Elpida Memory |
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HM5264165FLTT-B60 Datasheet(HTML) 10 Page - Elpida Memory |
10 / 65 page HM5264165F/HM5264805F/HM5264405F-75/A60/B60 Data Sheet E0135H10 10 V SS and VSSQ (power supply pins): Ground is connected. (VSS is for the internal circuit and VSSQ is for the output buffer.) Command Operation Command Truth Table The SDRAM recognizes the following commands specified by the CS, RAS, CAS, WE and address pins. CKE Command Symbol n - 1 n CS RAS CAS WE A12/A13 A10 A0 to A11 Ignore command DESL H × H ××× × × × No operation NOP H × L HHH ×× × Burst stop in full page BST H × L HHL ×× × Column address and read command READ H × LH L H V L V Read with auto-precharge READ A H × LH L H V H V Column address and write command WRIT H × LH L L V L V Write with auto-precharge WRIT A H × LH L L V H V Row address strobe and bank active ACTV H × LL H H V V V Precharge select bank PRE H × LL H L V L × Precharge all bank PALL H × LL H L × H × Refresh REF/SELF H V L L L H ×× × Mode register set MRS H × L LLL V V V Note: H: V IH. L: V IL. ×: VIH or VIL. V: Valid address input Ignore command [DESL]: When this command is set ( CS is High), the SDRAM ignore command input at the clock. However, the internal status is held. No operation [NOP]: This command is not an execution command. However, the internal operations continue. Burst stop in full-page [BST]: This command stops a full-page burst operation (burst length = full-page (256; HM5264165F, 512; HM5264805F, 1024; HM5264405F)), and is illegal otherwise. When data input/output is completed for a full page of data, it automatically returns to the start address, and input/output is performed repeatedly. |
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