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MC-4516CB647PF-A75 Arkusz danych(PDF) 10 Page - NEC |
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MC-4516CB647PF-A75 Arkusz danych(HTML) 10 Page - NEC |
10 / 16 page Data Sheet M14406EJ2V0DS00 10 MC-4516CB647 Serial PD (1/2) Byte No. Function Described Hex Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Notes 0 Defines the number of bytes written into serial PD memory 80H 1 0 0 0 0 0 0 0 128 bytes 1 Total number of bytes of serial PD memory 08H 0 0 0 0 1 0 0 0 256 bytes 2 Fundamental memory type 04H 00 00 01 00 SDRAM 3 Number of rows 0CH 0 00 01 10 0 12 rows 4 Number of columns 0AH 0 00 01 01 0 10 columns 5 Number of banks 01H 0 0 0 0 0 0 0 1 1 bank 6 Data width 40H 01 00 00 00 64 bits 7 Data width (continued) 00H 00 00 00 00 0 8 Voltage interface 01H 00 00 00 01 LVTTL 9 CL = 3 Cycle time 75H 0 1 1 1 0 1 0 1 7.5 ns 10 CL = 3 Access time 54H 0 1 0 1 0 1 0 0 5.4 ns 11 DIMM configuration type 00H 00 00 00 00 None 12 Refresh rate/type 80H 10 00 00 00 Normal 13 SDRAM width 08H 00 00 10 00 ×8 14 Error checking SDRAM width 00H 00 00 00 00 None 15 Minimum clock delay 01H 00 00 00 01 1 clock 16 Burst length supported 8FH 1 0 0 0 1 1 1 1 1, 2, 4, 8, F 17 Number of banks on each SDRAM 04H 0 0 0 0 0 1 0 0 4 banks 18 /CAS latency supported 06H 00 00 01 10 2, 3 19 /CS latency supported 01H 00 00 00 01 0 20 /WE latency supported 01H 00 00 00 01 0 21 SDRAM module attributes 00H 00 00 00 00 22 SDRAM device attributes : General 0EH 0 00 01 11 0 23 CL = 2 Cycle time A0H 1 0 1 0 0 0 0 0 10 ns 24 CL = 2 Access time 60H 0 1 1 0 0 0 0 0 6 ns 25-26 00H 0 0 0 0 0 0 0 0 27 tRP(MIN.) 14H 00 01 01 00 20 ns 28 tRRD(MIN.) 0FH 0 0 0 0 1 1 1 1 15 ns 29 tRCD(MIN.) 14H 00 01 01 00 20 ns 30 tRAS(MIN.) 2DH 0 0 1 0 1 1 0 1 45 ns 31 Module bank density 20H 0 0 1 0 0 0 0 0 128M bytes 5 5 5 5 5 |
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