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TC59LM806CFT-50 Datasheet(PDF) 10 Page - Toshiba Semiconductor |
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TC59LM806CFT-50 Datasheet(HTML) 10 Page - Toshiba Semiconductor |
10 / 38 page TC59LM814/06CFT-50,-55,-60 2002-08-19 10/38 POWER UP SEQUENCE (1) As for PD , being maintained by the low state (≤ 0.2 V) is desirable before a power-supply injection. (2) Apply VDD before or at the same time as VDDQ. (3) Apply VDDQ before or at the same time as VREF. (4) Start clock (CLK, CLK ) and maintain stable condition for 200 µs (min). (5) After stable power and clock, apply DESL and take PD =H. (6) Issue EMRS to enable DLL and to define driver strength. (Note: 1) (7) Issue MRS for set CAS latency (CL), Burst Type (BT), and Burst Length (BL). (Note: 1) (8) Issue two or more Auto-Refresh commands (Note: 1). (9) Ready for normal operation after 200 clocks from Extended Mode Register programming. Note: (1) Sequence 6, 7 and 8 can be issued in random order. (2) L = Logic Low, H = Logic High CLK Command DQ Address VDD VDDQ VREF CLK PD 2.5V(TYP) 2.5V(TYP) 1.25V(TYP) 200 us(min) tPDEX lPDA lRSC lRSC lREFC lREFC 200clock cycle(min) DESL RDA DESL RDA MRS DESL WRA REF DESL WRA REF DESL op-code EMRS op-code MRS Hi-Z DQS EMRS MRS Auto Refresh cycle Normal Operation MRS |
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