Datenblatt-Suchmaschine für elektronische Bauteile |
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UPD48576118F1 Datenblatt(PDF) 20 Page - Renesas Technology Corp |
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UPD48576118F1 Datenblatt(HTML) 20 Page - Renesas Technology Corp |
20 / 52 page µµµµPD48576118F1 R10DS0257EJ0101 Rev. 1.01 Page 20 of 51 Jan. 15, 2016 Figure 2-5. Mode Register Bit Map Notes 1. Bits A10–A17 must be set to all ‘0’. A18-An are “Don’t Care”. 2. BL=8 is not available for configuration 1 and 4. 3. ±30% temperature variation. 4. Within 15%. 2.9 Read & Write configuration (Non Multiplexed Address Mode) Table 2-4 shows, for different operating frequencies, the different µPD48576118F1 configurations that can be programmed into the mode register. The READ and WRITE latency (tRL and tWL) values along with the row cycle times (tRC) are shown in clock cycles as well as in nanoseconds. Table 2-4. Configuration Table Parameter Configuration Unit 1 Note1 2 3 4 Note1, 2 5 tRC 4 6 8 3 5 tCK tRL 4 6 8 3 5 tCK tWL 5 7 9 4 6 tCK Valid frequency range 266-175 400-175 533-175 200-175 333-175 MHz Notes 1. BL= 8 is not available. 2. The minimum tRC is typically 3 cycles, except in the case of a WRITE followed by a READ to the same bank. In this instance the minimum tRC is 4 cycles. A2 A4 A5 A17-A10 A3 A1 A0 A6 A7 A3 0 1 BL 4 A4 0 1 8 Note 2 0 0 1 1 Reserved Note 1 A9 A7 0 1 A8 A2 A1 A0 10 Configuration Configuration Configuration 1 Note 2 (default) 5 Reserved Reserved 1 Note 2 Not valid 2 (default) PLL enabled PLL Reset PLL Reset Burst Length Burst Length PLL Reset Address Mux Address Mux PLL reset (default) 2 3 4 10 11 01 01 00 00 1 1 0 0 1 0 1 0 11 Impedance Matching Impedance Matching A8 0 1 Resistor External Internal 50 Ω Note 3 (default) A5 0 1 Nonmultiplexed (default) Address multiplexed Address Mux A9 0 1 Enabled Termination On-Die Termination Disabled (default) On-Die Termination Unused Note 2 Note 4 |
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