MC-458CB646 Datasheet, PDF (11/16 Pages) NEC – 8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE

MC-458CB646
(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
setup time
20H 0 0 1 0 0 0 0 0 2 ns
33 Command and address signal input
10H 0 0 0 1 0 0 0 0 1 ns
hold time
34 Data signal input setup time
35 Data signal input hold time
36-61
62 SPD revision
E_{63 Checksum for bytes 0 - 62}
64-71 Manufacture’s JEDEC ID code
72 Manufacturing location
O_{73-90 Manufacture’s P/N}
91-92 Revision code
L ^{93-94 Manufacturing date}
-A80
-A10
20H 0
10H 0
00H 0
12H 0
E7H 1
4DH 0
0
0
0
0
1
1
1
0
0
0
1
0
0
1
0
1
0
0
0
0
0
0
0
1
0
0
0
0
1
1
0
0
0
1
1
0
0 2 ns
0 1 ns
0
0 1.2
1
1
95-98 Assembly serial number
99-125 Mfg specific
126 Intel specification frequency
127 Intel specification /CAS
latency support
64H 0 1 1 0 0 1 0 0 100 MHz
-A80 A7H 1 0 1 0 0 1 1 1
-A10 A5H 1 0 1 0 0 1 0 1
P _{Timing Chart}
roduct ^{Refer to the µPD45128441, 45128841, 45128163 Data sheet (E0031N).}
Data Sheet E0063N10
11