MC-458CB647 Datasheet, PDF (11/16 Pages) NEC – 8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE

MC-458CB647
(2/2)
Byte No.
Function Described
Hex Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Notes
32 Command and address signal input
15H 0
0
0
1
0
1
0
1 1.5 ns
setup time
33 Command and address signal input
08H 0
0
0
0
1
0
0
0 0.8 ns
hold time
34 Data signal input setup time
35 Data signal input hold time
36-61
62 SPD revision
E63 Checksum for bytes 0 - 62
64-71 Manufacture’s JEDEC ID code
72 Manufacturing location
73-90 Manufacture’s P/N
O_{91-92 Revision code}
93-94 Manufacturing date
95-98 Assembly serial number
L ^{99-125 Mfg specific}
15H 0
0
0
1
0
1
0
1 1.5 ns
08H 0
0
0
0
1
0
0
0 0.8 ns
00H 0
0
0
0
0
0
0
0
12H 0
0
0
1
0
0
1
0 1.2
A6H 1
0
1
0
0
1
1
0
126 Intel specification frequency
64H 0
1
1
0
0
1
0
0
127 Intel specification /CAS latency support A7H 1
0
1
0
0
1
1
1
P ^{Timing Chart}
roduct ^{Refer to the µPD45128441, 45128841, 45128163 Data sheet (E0031N).}
Data Sheet E0062N20
11