Datenblatt-Suchmaschine für elektronische Bauteile |
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MC-458CA727EFA-A75 Datenblatt(PDF) 10 Page - NEC |
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MC-458CA727EFA-A75 Datenblatt(HTML) 10 Page - NEC |
10 / 16 page Data Sheet M14278EJ3V0DS00 10 MC-458CA727 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 80H 100000 00 128 bytes serial PD memory 1 Total number of bytes of serial PD memory 08H 000010 00 256 bytes 2 Fundamental memory type 04H 000001 00 SDRAM 3 Number of rows 0CH 000011 00 12 rows 4 Number of columns 09H 000010 01 9 columns 5 Number of banks 01H 000000 01 1 bank 6 Data width 48H 010010 00 72 bits 7 Data width (continued) 00H 000000 00 0 8 Voltage interface 01H 000000 01 LVTTL 9 CL = 3 Cycle time 75H 011101 01 7.5 ns 10 CL = 3 Access time 54H 010101 00 5.4 ns 11 DIMM configuration type 02H 000000 10 ECC 12 Refresh rate/type 80H 100000 00 Normal 13 SDRAM width 10H 000100 00 ×16 14 Error checking SDRAM width 10H 000100 00 ×16 15 Minimum clock delay 01H 000000 01 1 clock 16 Burst length supported 8FH 100011 11 1, 2, 4, 8, F 17 Number of banks on each SDRAM 04H 000001 00 4 banks 18 /CAS latency supported 06H 000001 10 2, 3 19 /CS latency supported 01H 000000 01 0 20 /WE latency supported 01H 000000 01 0 21 SDRAM module attributes 00H 000000 00 22 SDRAM device attributes : General 0EH 000011 10 23 CL = 2 Cycle time A0H 101000 00 10 ns 24 CL = 2 Access time 60H 011000 00 6 ns 25-26 00H 000000 00 27 tRP(MIN.) 14H 000101 00 20 ns 28 tRRD(MIN.) 0FH 000011 11 15 ns 29 tRCD(MIN.) 14H 000101 00 20 ns 30 tRAS(MIN.) 2DH 001011 01 45 ns 31 Module bank density 10H 000100 00 64M bytes 5 5 5 5 5 5 |
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